Design and Construction Specification
for
MARINE LOADING ARMS
(Third Edition –1999)
The OCIMF mission is to be recognized internationally as the forecast authority
on the safe and environmentally responsible operation of
oil tankers and terminals.
Oil Companies and International Marine Forum
Issued by the
Oil Company International Marine Forum
First Published 1980
Second Edition 1987
Third Edition 1999
ISBN I 85609 071 X
© Oil Companies International Marine Forum, Bermuda
The Oil Companies International Marine Forum (OCIMF) is a voluntary association of oil companies having an interest in the
shipment and terminalling of crude oil, and oil products. OCIMF is organized to represent its membership before, and consult with,
the International maritime Organization and other government bodies on matters relating to the shipment and terminalling of crude oil
and oil products including marine pollution and saftey.
British Library Cataloguing in Publication data
Oil Companies International Forum
Design and Construction Specification
for Marine Loading Arms
1.Title
ISBN 1 85609 071 X
Notice of Terms of Use
While the advice given in this document(“document”)has been developed using the best information currently available, it is intended
purely as guidance to be used at the user’s risk. No responsibility is accepted by the Oil Companies International Marine Forum
(OCIMF), the membership of OCIMF, or by any person, firm, corporation or organization [who or which has been in any way
concerned with the furnishing of information or data, the compilation or any translation, publishing, supply or sale of this documents]
for the accuracy of any information or advice given in the document or any omission from the document or for any consequences
whatsoever resulting directly or indirectly from compliance with or adoption of guidance contained in the document even if caused
by a failure to exercise reasonable care.
Published and Printed by
WITHERBY & CO LTD
32-36 Aylesbury Street, London ECIR 0ET
Telephone: 44(0) 171 253 5413 Fax: 44(0) 171 251 1296
- ii -
Contents
Page No.
Glossary of Terms and Abbreviations
vii
Introduction
xi
Purpose and Scope
xii
PART I –SPECIFICATION
1.0
Design and Construction Standards and Practices
1
2.0
Design Details and Requirements
2
3.0
Materials
2
4.0
Design
3
4.1
General
3
4.2
Stress Analysis
3
5.0
Swivels and Structural Bearings
7
6.0
Quick-Connect/Disconnect Couplers (QC/DC)
8
7.0
Emergency Release Systems (ERS)
9
7.1
General Requirements
9
7.2
General liquid Services
10
7.3
Liquefied Gas
10
8.0
9.0
10.0
11.0
Accessories
10
8.1
Storm Locks
10
8.2
Jacks
11
8.3
Stray Current Protectors
11
8.4
Valves, Flanges and Connections
11
8.5
Fixings
12
8.6
Lubrication
12
Hydraulic Power Systems
12
Controls
14
10.1
General
14
10.2
Range Alarms and Shutdown Systems
15
10.3
Emergency Release System(ERS)
15
Electrical Components
16
11.1
General
16
11.2
Electrical
17
- iii -
12.0
Testing
13.0
17
12.1General
17
12.2Normal Temperature Service(Above 0℃)
17
12.3Low Temperature Service (0℃ Or Lower)
17
12.4Operational Tests
18
12.5Swivel Tests
19
12.6Emergency Release System (ERS)Tests
20
12.7Quick Connect/Disconnect Coupler (QC/DC)Tests
21
Quality Assurance And Quality Control
13.1Quality System
21
13.2Quality Plan
22
Recommended Documentation
14.0
21
22
14.1Tender Documentation
22
14.2Contract Documentation
22
PART II-TABLES AND FIGURES
TABLES
Tables 1
Arm Design Details
24
Tables 2
Product And Operational Data
25
Tables 3
Ship Details
26
Tables 4
Ship Motions
26
Tables 5
Manifold Details
27
Tables 6
Berth Details, General
28
Tables 7
Berth Details, Electrical Supply
28
Tables 8
Berth Details, Electrical Earthing
28
Tables 9
Berth Details, Safety
29
Tables 10
Environmental Data
29
Tables 11
Specific Requirements
30
Tables 12
Envelope Details (Arms With ERS)
31
Tables 13
Envelope Details(Arms Without ERS)
32
Tables 14
Central Control Requirements
32
Tables 15
Pendant Control Requirements
32
Tables 16
Location Of Pendant Control
33
Tables 17
Design Load Cases
33
Tables 18
Tender Documentation (Two Sheets)
34
Tables 19
Contract Documentation (Four Sheets)
36
- iv -
FIGURES
Figure 1
Ship Details
40
Figure 2
Ship Motions
41
Figure 3
Berth Details
42
Figure4
Reference Envelope (With ERS)
43
Figure 5
Reference Envelope (Without ERS)
44
Figure 6
QC/DC Interlock System
45
Figure 7
Stripping System
46
Figure 8
Angle Detecting Proximity Switches
47
Figure 9
Development Of Composite Envelope
48
Figure 10
Loading Arm Arrangement
49
Figure 11
Guidance to Clearance Check Points
50
PARTIII-GUIDELINES TO PARTS I AND II
1.0
Introduction
51
2.0
Guidelines
51
-v-
Glossary of Terms and Abbreviations
Apex Swivel
Provide luffing of the outboard arm relative to the inboard arm, and is located at the apex, ref.fig.10.
Arm Diameter
The minimum nominal diameter of the product piping.
Attitude
The various modes of use and /or location of the arm (i.e. manoeuvring, stored, connected, washing, hydrostatic
test, and maintenance). There can be many configurations for each attitude.
Brinelling
Permanent indentation in swivel raceways caused by ball/roller loads.
Cavitation
The formation and collapse of gas bubbles in a liquid when the pressure falls to or bellow the liquid vapor pressure.
Centerline of Loading Arm Group-Spotting Line
The line equidistant between the outside arms’presentation flanges of those arms in simultaneous service. It is
Used as the reference line for spotting the centerline of the ship’
s manifold group to be serviced by the loading
arm.
Clash
Any contact:
a.
Between adjacent loading arms while both arms are operating or one arm is operating.
and the other arms is in stored.
b. Between adjacent sections of the same arm (e.g. The triple swivel and outboard arm).
c.
Between the arms and any loading platform equipment.
d. Between the loading arms following an emergency separation, if applicable.
Column separation
The development of a significant vapor cavity in a liquid flow.
Counterweights
Primary counterweights balance the inboard arm assembly, ref.fig.10
Secondary counterweights balance the outboard arm assembly, ref.fig.10.
Some loading arms have one counterweight to balance inboard and outboard arm assemblies.
- vi -
Design Pressure
Ref. ASME Standard B31.3
Design Temperatures
The design range of operating temperatures of the loading arm, established by the extremes of:
-
product temperatures during operations;
-
arm temperatures due to ambient conditions including solar radiation; and
-
the atmospheric boiling temperature ,for pressurized liquefied products.
Emergency Release System (ERS)
A system for quickly and safely disconnecting a loading arm from a ship with minimal product spillage. It consists
of an emergency release coupler between two interlocked block valves, ref.fig.10.
Envelope, Composite
The operating envelope for a single arm in a group of connected arms, ref, figure 9
Envelope , Operating
That volume in which a loading arm presentation flange is required to operate. The volume is based on the range
of manifold locations, changes in tides and freeboard, surge and sway.
Envelope, Reference
s manifold correctly centered on the
The operating envelope for a single arm connected to a vessel with the vessel’
loading arm. Ref. Figure 4 and 5.
Freeboard
The vertical distance between the ship’
s deck and the waterline at the manifold location, ref.fig.1.
Freewheel
The ability of a loading arm to freely follow the changes in the ship’
s position due to tidal movements, changes in
freeboard and ship’
s motions.
Heave
Ref. Fig.2
Inboard Arm
The product-carrying pipe and any structural members contained between the apex swivel and the trunnion swivel
ref. Fig 10.
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Included Angle
The angle formed between the inboard arm and the outboard arms ref. Fig.10.
Insulating Flange
An electrical insulating flange, to prevent stray current and electrically isolate ship and shore.
Jack
A permanent, adjustable load-carrying mechanism installed in the triple swivel assembly, ref. Fig.10
Loading Arm
The articulated metal loading arm system ref. Fig. 10,used for transferring products to or from ships with the
capability of accommodating differences in tides and freeboard and ship motions ref.fig.2
Luffing
Rotary motions of the inboard and outboard arm in the vertical plane, ref. Fig.10.
Manifold
The flanged pipe assembly mounted onboard ship to which the presentation flange of the loading arm or spool
piece connects ,ref.fig.10.
Manifold Spacing
The horizontal distance between the centerlines of adjacent manifold.
Manifold Swivel
Accommodates the pitching motion of the ship ,ref.fig.2 and is located adjacent to the presentation flange in the
horizontal part of the triple swivel assembly ,ref. Fig.10.
Outboard Arm
The product-carrying pipe and any structural members contained between the apex and the triple swivel assembly.
Ref. Fig.10.
Owner
The owner, or his designated agent, is the company or group of companies for whose use the loading arms are
installed.
Pantograph
A system for transmitting balancing loads from the outboard arm to the secondary counterweights.
- viii -
Pendant
A hand held portable unit for controlling specified loading arm functions.
Pitch
Ref. Fig.2
Powered Emergency Release Coupling ( PERC)
An emergency release coupling, generally used on liquefied gas systems, that use stored energy to ensure breakout
through any ice build up.
Presentation Flange
Loading arm flange for connection to either the ship’
s flange or spool piece, ref.fig.10
Product
Any substance that flows through a marine loading arm. This includes, but is not limited to , crude oil, refined and
chemical products, liquefied gases, vapor and ballast water.
Quick Connect/Disconnect Coupler (QC/DC)
The manual or hydraulic mechanical device used to clamp the presentation flange to the ship’
s manifold without
the use of bolts.
Reducer
A short length of pipe with flanges of different diameter for matching the manifold flange to the presentation
flange.
Riser
The vertical fluid carrying and structural member which supports the arm assemblies, ref. Fig.10.
Roll
Ref. Fig2.
Slew Swivel
Provides horizontal rotation of the arm assemblies, and located on the riser, ref. Fig.10.
Spotting Line(S)
For a single arm connection the spotting line is a line, at a pre-determined location on the jetty deck which is
aligned with the center-line of the ship’
s manifold to which it connects.
- ix -
For multi-arm connections the spotting line for each group of connected arm is a line , at a predetermined location on
the jetty deck which is aligned with the center-line of the group of ship’
s manifold flanges to which they connect.
Stage Alarms
Alarms initiated by proximity switches, when the arm reaches specified limits, indicating the specified positions in
the envelope , ref. Fig.4.
Surge
Ref. Fig 2.
Surge Pressure
Upstream or downstream pressure resulting from sudden changes in flow.
Sway
Also referred to as drift. Ref. Fig.2.
Triple Swivel Assembly (TSA)
The group of three swivels and elbows located at the end of the outboard arm, ref. Fig. 10 and used principally for
accommodating pitch, yaw and roll, ref, Fig,2.
Trunnion Assembly
The fluid carrying system of elbow(s) and trunnion swivel on top of the riser,.ref. Fig.10.
Trunnion Swivel
Provides luffing of the inboard arm, ref, fig.10.
Vacuum Breaker
A valve in the apex which when opened to the atmosphere breaks the internal vacuum and expedites gravity
draining of the outboard arm..
Vendor
The vendor is the individual or company contracted to carry out the design, fabrication, factory testing,
supervision of installation and site testing.
Yaw
Ref. Fig.2.
-x-
Introduction
Loading arms are increasingly being purchased for special applications requiring accurate and thorough
specifications and considerable engineering assessment. Consequently, loading arms should not be considered
merely as prefabricated hardware.
The uniqueness of each loading arm application is reflected in the variability and complexity of operating
envelopes, products transferred, simultaneous service requirements, manifold spacing, jetty and piping layouts,
arm styles, environmental loadings , auxiliary hardware etc. all these variables need to be considered during the
design basis stage and be accurately presented in the final loading arm specification.
- xi -
Purpose and Scope
The specification covers the minimum requirements for marine loading arms and their ancillary equipment for
loading and/or unloading ships and barges at conventional marine terminals and sea islands.
The use of the word “loading “is generic and applies to both loading and unloading arms.
Loading arms are generally used for crude oil, refined and chemical products, liquefied gases, vapor and
ballasting/deballasting duties.
The specification does not include details of all requirements relating to the design and fabrication of standard
parts and fittings of the loading arms. The owner is therefore expected to supplement the information listed, taking
account of local conditions and any particular design or operating features of the loading arms.
It should be noted that this specification and accompanying guidelines are not intended to preclude the use of new
materials , design or techniques which can be satisfactorily demonstrated to be suitable for the intended service.
An asterisk beside a section, table or figure indicates that there is a relevant explanation in part III
“guidelines to parts I and II”.
- xii -
Part I
Specification
1.0 DESIGN AND CONSTRUCTION STANDARDS AND PRACTICES
1.1
the latest codes of the following codes and standards form part of this specification, as a minimum.
ASME Codes
Section VIII-Pressure Vessels Division I and II.
Section IX-Welding Qualifications.
B16.5- Steel Pipe Flanges and Flanged Fittings.
B31.3-Petroleum Refinery Piping.
AISC Standards
Manual of steel Construction.
UBC Code
The Uniform Building Code.
(Institute of Petroleum( UK) Model Code of Practice Part 15.
Institute of Petroleum (UK)
Model Code of Practice Part 15.
ASCE7
Minimum Design Loads for Buildings and Other Structures.
BS5500
Specification for Unfired Fusion Welded Pressure Vessels.
IEC-60079-14
Electrical Apparatus for Explosive Gas Atmospheres .Part 14
Electrical Installations in Hazardous Areas (Other than Mines)
IEC-600529
Degrees of Protection Provided by Enclosures (IP Code).
API-6D
Specifications for Pipeline Valves.
ISO 10497
OCIMF
Testing of Valves, Fire Type Testing Requirements
Recommendations for Oil Tanker Manifolds and Associated
Equipment. 4th Edition 1991.
OCIMF
Recommendations For Manifolds For Refrigerated Liquefied Gas
Carriers For Cargoes From 0℃ To minus 104℃.2nd edition
1987
OCIMF & SIGTTO
Recommendations for Manifolds for Refrigerated Liquefied Gas
Carriers (LNG). 2nd edition 1994.
MARPOL 73/78 ANNEX II
Regulations for the Control of Pollution by Noxious Liquid
Substance in Bulk.
Local or national codes shall be followed if they are more stringent than those listed above.
- 13 -
2.0 DESIGN DETAILS ANG REQUIREMENTS
Tables 1 to 16 inclusive and table 18 and 19 shall be completed by the owner and shall be used in the
loading arm technical specification .
A loose leaf master copy of each of these tables is provided for this use.
3.0
MATERIALS
3.1
the vendor shall propose material specifications for the owner’s review and approval.
3.2
For welding purposes the carbon content of the carbon steels for structural /mechanical loading
arm components shall not be higher than 0.23%.
3.3 Welding procedures shall be submitted for owner approval.
3.4 Welding qualifications for all pressure welds in product carrying members shall comply with the
requirements of section Ix of the ASME B31.3 whichever is applicable.
3.5 Radiographic examination and acceptance for pressure welds shall comply with ASME section
VIII-division I or BS 5500 or ASME B 31.3 whichever is applicable. all pressure containing
welds shall be 100% radiographied .
Where radiography is not possible or applicable , welds shall be 100% tested by non-destructive
method, which shall be submitted for Owner’s approval.
3.6 Swivels and product carrying parts of ERS, QC/DC etc., shall be constructed of materials which
do not cause galvanic action with the product pipe.
The liquid seal shall have packing faces of austenitic stainless steel (18Cr-8Ni), or of equivalent
material which is resistant to pitting action.
The seal ring material shall be suitable for the product, and for exposure to ambient and design
temperatures.
3.7 hydraulic and lubrication components , e.g. tubing/piping , fittings, block valves, reservoir,
strainers, piston rods, fasteners, cabinets and enclosures shall be constructed from stainless steel.
3.8 hoses shall be used to provide articulation or electrical insulation. Hoses lengths shall be the
minimum required for the duty and kept clear from the mechanical parts of ERS systems.
the use of the aluminum for structural or product carrying components is expressly prohibited.
3.9 All proprietary items of equipment, e.g. arms , couplers, hydraulic systems etc. shall be supplied
with a permanent, weather resistant, metal nameplate affixed to the item. All nameplates shall be
permanently attached to items of equipment which cannot be removed or disassembled .
attachment to guards, covers and such parts is prohibited. Nameplates shall be fixed in place by
means of non-corroding studs, rivets, bolts and nuts or by welding . adhesives are not permitted .
nameplates shall provide the following information:
- 14 -

.name of manufacturer, model and serial numbers;

.date of manufacture.

.design temperature and pressure;

.materials of parts exposed to process fluid; and

.if applicable , electrical information relating to area classification, voltage and frequency,
etc.
3.10 General
3.10.1 the vendor shall ensure maximum standardization and interchangeability of components.
3.10.2 Unless otherwise specified , the vendor may offer alternative designs for owner
approval.
3.10.3 Loading arms dimensions , based on the design data in Section 2.0, shall be determined
by the vendor to ensure that loading arms satisfies all specified requirements.
3.10.4 The vendor shall develop from the reference envelope the composite envelope for each
loading arm in the connection combinations specified in Table 1.
3.10.5 A combination of connected loading arms, as specified and minimum and maximum
heights above the waterline in Table 1 must service manifolds with the minimum and
maximum distance between manifold connections as specified in Table 3 at all locations
in the operating envelops for the ship motions specified in Table 4, and differences in
water levels specified in Table 10.
3.10.6 For design purpose, the centerline of the loading arm groups shall be taken to be
opposite the center line of the corresponding ship’
s manifold connections to be used .
this is called the spotting line.
3.10.7 The vendor shall prepare a clearance study for all cases including emergency release
positions , for owner’
s approval, reference figure 11. minimum clearance shall be as
follows:
- 0.15 meters between any part of an operated arm and fixed objects;
- 0.30 meters between any part of adjacent loading arms.
3.10.8 in the stored position no part of the loading arm shall extend beyond the jetty face.
3.10.9 The range of arm movements shall allow the triple swivel assembly to be positioned on
the jetty for maintenance using a dummy manifold, if specified in table 11.the vendor
shall indicate in his proposal, the intended location and area on the jetty for owner’
s
approval.. if the triple swivel assembly cannot be placed on the jetty, the vendor shall
advise the owner and propose an alternative solution for the owner’s approval.
3.10.10 Safety ladders with double rungs and harness and platforms shall be provided for access
to all serviceable areas of loading arm unless specified otherwise in table 11. platforms
shall provide safe working areas.
3.10.11 Loading arm shall be counterweight balanced in the empty condition.
- 15 -
3.10.12 The triple swivel assembly , including any attachments such as a jack , ERS, OC/DC,
etc., shall be balanced for all arm attitudes so that the presentation flange remains in the
range from the vertical plane to 3°to give first contact at the top of the manifold
flange .
3.10.13 If specified , in table 11, a two speed manoeuvring facility shall be provided. The higher
average speed shall be 0.15m/s and the lower average speed shall be 0.075m/s.
3.10.14 Loading arms shall be designed to permit easy in situ inspection, maintenance and
replacement of vital swivel and structural bearing components, without having to
dismantle major sections of the loading arm.
3.10.15 Wind velocities for loading arm in operation (long time) is 17m/s, in stored
attitude(short time) is 55m/s.
3.11 stress analysis
3.11.1 if specified in table 19 the vendor shall submit ,for owner’
s review a stress report, for
the loading combinations shown in table 17 at all appropriate arm attitudes within the
envelope. The tanker manifold shall be included ,if required by section 4.2.11. where
combinations other than those shown in table 17,e,g. exclusion of a load , can be shown
to lead to a greater feasible loading effect, then the design shall also allow for that
condition. It is the vendor’s responsibility to identify such conditions. Where applicable ,
the stress report shall also include any installation/maintenance lifting lugs. The
calculations shall show the load distribution method to be adopted where more than two
lifting lugs are used simultaneously.
3.11.2 The basic allowable design stress sd, for pressure containing and non-pressure
containing structural components shall be the lower of either:
yield stress /1.5 or ultimate tensile stress /2.35
the yield and ultimate tensile stresses shall be the values specified in ASME B 31.3 or
ASME IID for ASTM materials at design temperature. Alternatively these values can be
derived according to BS 5500, or equivalent national material specification with owner’s
approval.
3.11.3 method of analysis for structural members, e.g. beams and channel sections, shall
comply with AISC or the applicable National code , using the basic allowable stresses
in section 4.2.2. and the k factors in table 17.
3.11.4 Unless specified otherwise, in tables 1, the pressure load PL, in table 17 shall be based
on the loading arm flange rating. If no test pressure is specified then it shall be in
accordance with ASME/ANSI B31.3
3.11.5 Fluid loads (FL) for loading arms shall based on :
a.The weight of seawater( specific gravity of 1.03) for oil and oil products.
b.the product weight for liquefied gases and chemical products.
3.11.6 unless otherwise specified in table 10, the self weight and wind load (DL+WL) shall
- 16 -
include ice build-up (specific gravity=0.80)as follows:
a.
cold climate- 6mm on all components
b. refrigerated LPG cargo- 10 mm on cargo components
c.
for LNG and ethylene –25 mm on cargo carrying components
it should be noted that these criteria are not cumulative.
3.11.7 thermal loads (TL) are the loads caused by material temperature differences. The
temperature differences used in the design shall Best wishes, based on the design
temperatures specified in table 1 and if applicable the ambient and solar radiation
temperatures in table 10. these temperatures shall be applied in the most extreme
combination.
Where a product, e.g. LNG, could produce unacceptable temperature gradients, a
cool-down procedure shall be included in the operating procedures which are requested
in table 19. this procedure shall provide temperature gradients across fluid and structural
members and recommended maximum cool-down product flow rate and minimum
cool-down duration to prevent excessive stresses and strains.
3.11.8 windloads (WL) shall be calculated for the worst direction(s). the vendor shall calculate
wind loads as follows.
a.
velocity pressure
the velocity pressure is calculated as follows :
qz=0.613 KzKztV2I
where
qz=velocity pressure at height z above minimum water level (N/m2)
Kz=velocity pressure co-efficient evaluated at height z(m)
Kzt=topographic factor (use 1.0)
V=Basic 3 seconds gust wind speed (m/s)
I=Importance factor (use 1.0)
Kz is determined as follows:
Kz=2.01(Z/Zg)2
/ａ,
Kz=2.01(4.6/Zg)
for 4.6m ≤Z≤Zg
2/ａ,
for Z< 4.6m
Where Z= Height above low tide(m)
Zg=Gradient height(m)
ａ=power law coefficient
Exposure
ａ
Zg(m)
C
9.5
274
D
11.5
213
Exposure C covers open terrain with scattered obstructions having heights
generally less than 10m.
Exposure D should be generally used for loading arms exfcept where
- 17 -
Exposure C could be justified.
Exposure D covers flat, unobstructed locations which are exposed to wind
flowing over open water for a distance of at least 1.6Km.
Exposure D extends 4100m inland from the shoreline or 10 times the
height of the loading arm, whichever is greater.
b. Wind Forces
The wind force is calculated as follows:
F=qzGCfAf
Where F = Design wind force (N)
G=gust effect factor (use 0.85)
Cf=Force coefficient
Af=Projected area normal to wind (m2)
The gust effect factor ,G, accounts for the loading effects in the along-wind direction due to
the effect of wind turbulence on the loading arm. It also accounts for along-wind loading
due to dynamic amplification for flexible structures. It does not include cross-wind loading
effects, vortex shedding, instability or dynamic torsional effets. If a higher value factor is
justified due to dynamic sensitivity to wind it should be determined in accordance with
ASCE 7.
Loading arms are not subject to wind included vibrations.
The force coefficient Cf accounts for along-wind effects due to the shape or drag of the
loading arm.
Loading arms are unique structures and there are no wind tunnel test data available to
establish precise force coefficients. However, based on recommendations provided in ASCE
7 for round cylindrical shapes and flat or angular shaped members, the following
coefficients are recommended.
Cross-section
Round
Type of surface
Cf
Moderately Smooth rough
0.7
D√qz>5.3
1.0
Round
all
1.2
all
1.7
D√qz≤5.3
Flat or angular
D= diameter (m)
qz in N/m2
alternatively, the vendor may determine wind loads from wind tunnel tests on a representative model.
3.11.9 the design stress procedure shall be as follows:

determine the design loads for the various load cases from Table 17;

calculate the stresses using linear elastic material behaviour and the
equivalent (tresca, vonmises or principal ) stress;
- 18 -

determine the allowable design stress, s=(KxSd) using the K factors in
Table 17;

the equivalent stresses
must not exceed the allowable
design
stress, s;

local discontinuity and /or local thermal stresses must not exceed 2.0 x
yield stresses.

Components under predominantly compressive stresses shall be shown to
have a safety factor of 2.0 against instability;

The maximum deformation of components shall be limited such that the
functionality of the equipment and the clearance requirements specified in
section 4.1.7 are guaranteed under all loading conditions; and

Check dynamic behaviour where approprite
3.11.10 complete wire rope assemblies , with their anchorages , shall have a safety factor of at
least 5 related to minimum rated breaking strength.
3.11.11 The vendor shall ensure that the loads transmited to the manifold flange , under all
circumstances are limited to the maximum given in the latest editions of the OCIMF
‘recommendations for Oil Tanker Manifolds and
Associated Equipment’,’Recommendations for Manifolds for refrigerated gas carriers
for cargoes from 0 ℃ to minus 104 ℃ , or ‘recommendations for manifolds for
refrigerated liquefied natural gas carriers (lng) ,whichever is applicable.
The vendor shall perform a manifold stress analysis where the manifold loads exceed
the allowable loads given in the above publications.
The manifold stresses shall be based on cases 4,5 and 6 using the applicable k factors in
table 17.
The stress analysis shall be made with the specified manifold diameters,wall
thicknesses and materials given in table 5.if this information is not available then the
vendor and owner shall confer and agree. The vendor shall provide a table of maximum
allowable manifold cantilever lengths for the specified operating wind speed to comply
with the allowable manifold loads and a table of maximum allowable operating wind
speeds for 1200 mm manifold cantilevers.
3.11.12 earthquake loads (EL), when specified in table 10 shall be considered to act in the plane
parallel and normal to the jetty face.
3.11.13 Stress intensification factors, as per ASME 31.3 shall be used for elbows flange and
pipebends etc. correction factors flanged ends shall be restricted to arc angles of 90
degrees or less. The effect of swivels shall be considered if appropriate.
4 swivels and structural bearings
- 19 -
4.3 where applicable, swivels and structural bearings shall be capable of being lubricated without
dismantling and shall be designed to prevent over-pressurization from lubrication.
4.4 where low temperature precludes the use of lubricating grease, a nitrogen purge system shall be
used. The nitrogen shall circulate in a series type system, with final controlled exhaust to
atmosphere, unless otherwise stated.
4.5 seals shall prevent the ingress of moisture and particulates
swivels shall accommodate temporary vacuum conditions and reseat properly afterwards.
4.6 the strength of the swivel shall be based on the combination of the internal design pressure . for
swivels only , and the maximum design equivalent load Pca, which is based on the most
stringent combination of external axial, bending moment and radial loads.
PCA= FA+5MT/d +2.3FRtanα
WHERE
FA=externally applied axial load (N).
MT=externally applied bending moment (Nm).
D= raceway diameter(m).
FR= radial load(N).
α= the contact angle (angle between the plane of the balls and the center of contract
at the ball / raceway interface).
the following criteria shall be met:
A. At 1.5 x PCA , plus internal design pressure ( for swivels only) the width of any brinelling
shall be a maximum of 8% of the ball/ roller diameter.
B. At 2x PCA, plus internal design pressure there shall be no loss of pressure or product
from a swivel.
C. For general liquid services, at 3.5 xPCA, there shall not be any structural failure.
D. For liquefied gas services , at 4x PCA there shall not any structural failure.
5
QUICK CONNECT/DISCONNECT COUPLERS (QC/DC)
5.3 when specified by the owner, ref. Table 11, arms shall be equipped with hydraulically or manually
operated QC/DC.
5.4 Aligned and centering devices shall be furnished for each diameter of flanges to which the
QC/DC must connect.
5.5 The pressure rating and sizes shall be as specified by the owner, ref. Table 11.
The QC/DC shall be designed to connect/disconnect to manifold flanges as specified by
the owner, ref. Table 5.
5.6 The QC/DC design shall accommodate the dimensional tolerances of the specified manifold
flanges.
The clamping mechanism shall also be designed to compensate for up to 5mm of uneveness of
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thickness of the nominal manifold flange.
5.7 a. the strength of the QC/Dc shall be based on the combination of the internal design pressure and
the maximum design equivalent load LCA which is based on the combination of the most stringent
arm attitude and external axial, bending moment and shear loads at the manifold flange.
b.the QC/DC shall not leak, deform or fail at twice LCA plus internal design pressure. This shall
apply with the minimum number of clamps in tension due to bending.
c.the design pressure shall be s specified in table 1.
6.6 The QC/DC shall be provided with a mechanical locking device to prevent inadvertent release
due to pressure or vibration. Activation of this device shall be clearly visible by a method to be
approved by the owner.
6.7 connection and disconnection operations of hydraulically operated QC/DC shall be possible
both from the central loading arm control panel at the jetty platform and at the local control
station, which is typically a portable or pendant control panel.
6.8 For hydraulically operated QC/DC, without integral valve , an interlock shall provide to
prevent operating during product transfer or when there is pressure in the arm. Ref. Fig.6.
6.9 Hydraulically operated QC/DC clamps shall operate simultaneously with equal forces and
shall not overstress the mating tanker manifold flanges.
6.10 In the event of loss of hydraulic pressure the QC/DC and any associated hydraulically
operated product valve shall remain “as is”. A manual release shall be provided.
6.11 For hydraulically operated QC/DC the operating time range is shown in Table 11. for clamp
safety reasons the operating time must not be less than the specified minimum.
6.12 The QC/DC shall be capable of disconnection under the maximum manifold loads,
considering any ice , if applicable.
6.13 The QC/DC shall hold a flange cover to contain any remaining product following
disconnection. This cover shall remain attached but not necessarily closed off, to the QC/DC
if opened accidentally, but may not need to be designed to withstand the loading arm
operating pressure. The cover shall have a tapered hole and be fitted with a plug to enable the
owner, if required , to fit a bleed valve or pressure relief port for depressurisation before
removal.
6.14 Lubrication of all moving parts shall be possible without dismantling the coupler.
7.0 EMERGENCY RELEASE SYSTEMS (ERS)
7.1 general requirements
7.1.1 when specified by the owner, ref. Table 11, arms shall be equipped with hydraulically
operated Emergency Release Systems(ERS).
7.1.2 the ERS shall comprise an Emergency Release Coupling (ERC) between two product
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valves, mounted in the vertical leg of the triple swivel assembly.
7.1.3 the ERS shall permit a clean and safe separation of the loading arm from the ship,
following complete closure of the ERS valves and opening and releasing of the ERC, at
the location specified in Table 12.
7.1.4 mechanical or hydraulic interlocks shall prevent ERC operation before complete closure
of the product valves.
7.1.5 a failure mode and effects analysis of the ERS shall be carried out by the vendor for
approval by the owner.
7.1.6 where a “piggy- back “line is fitted with a separated ERS, it shall separate before the
product line ERC.failure of the “piggy –back “line ERC shall not prevent seperation of
product line ERC.
7.1.7 in the event of hydraulic or electrical power loss and subsequent re-energising the ERS
shall remain “as-is”,in particular the ERC shall remain securely closed.
7.1.8 where arms can be in simultaneous service, a dedicated accumulator shall be provided for
each loading arm ERS. This will provide stored hydraulic energy, allowing ERS operation,
by manual initiation in the event of electrical power failure, ref. Section 7.1.10c. low
accumulator pressure audio and visual alarms shall be provided.
7.1.9 the ERC shall incorporate a mechanical pin to provide protection against accidental
activation.
7.1.10 the ERS shall be initiated in the following ways:
a.
automatically when the arm reach the specified stage alarms, ref . table 12.
b. Manually , using a push button on the central control panel. The push button shall be
protected from accidental operation.
c.
Manually , using hydraulic valves, in the event of loss electrical power supply . provision
shall be made to prevent inadvertant operation of the manual valve and the activation of the
ERS due to fluid bypass of the manual valve.
d. Manually , using push button at other location as specified by the owner.
7.1.11 at ERC separation , the outboard end of the loading arm shall move in accordance with
the requirements in section 9.1e.
7.1.12 activation of the ERS shall not be possible whilst the arm is in the stored and
manoeuvring attitudes . this shall also apply when the arm is parked at its maintenance
location for normal maintenance . however there shall be the capability of periodically testing
the ERS at the maintenance location.
7.1,13 the ERS components attached to the vessel manifold following an emergency separation
shall have their rotation at the manifold swivel limited by a “stop”to prevent collision with
the deck through excessive rotation.
7.1.14 tools and procedures shall be provided by the vendor to ease and ensure correct
reassembly of the ERC after release or a test.
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7.1.15 provision shall be made for testing the ERS functions without releasing the ERC.
7.1.16 operation of product valves shall not be possible before ERC reassembly.
7.1.17 the volume between product valves shall be minimized to limit spillage on release.
7.1.18 the ERC hydraulic cylinder shall be double acting.
7.1.19 the hydraulic power pack shall start-up automatically during an emergency. It shall be initiated by
the first stage alarm. However the accumulators should be available as back-up in the event of the
failure of the power pack to start.
7.1.20 a dummy flange shall be provided by the vendor for routine testing of the ERS, which would
include full activation of the ERC.
7.1.21 a. the strength of the ERS shall be based on the combination of the internal design pressure and
the maximum design equivalent load LCA which is based on the combination of the most
stringent arm attitude and external axial, bending moment and shear loads at the ERC.
b. the ERS shall not leak, deform or fail at twice LCA plus internal design pressure.
c. the design pressure shall be the same as for the loading arm as specified in table 1.
7.1.22 ERS valves and hydraulic piping shall comply with the fire proofing requirements of ISO 1047.
7.2 general liquid services
7.2.1 if specified in table 11 butterfly valves shall be offset trunnion type and shall be leak tight under
all operating conditions.
7.2.2 where ERS valves are purposed designed and integral with the ERS main body, any deviations
from specified valve standards must be submitted for review and approval.
7.2.3 wafer type mounted butterfly valves shall not be used.
7.3
liquefied gas
7.3.1
the ERC release mechanism shall incorporate a stored energy feature to ensure clean separation
and breakout of any ice formation.
7.3.2
the ERC shall be capable of being reassembled and removed from the vessel in the cold
condition.
8 ACCESSORIES
8.1 storm locks
8.1.1 all loading arm functional movements shall be lockable in the stowed position, and shall remain
secure for the worst load conditions. Stowing locks shall be easily released and operable by one
person.
8.1.2 slewing function of in-board arm shall be mechanically locked. Outboard arm may be hydraulically
locked .
8.1.3 it shall be possible to hydraulically lock the slew motion when in the maintenance attitude.
8.1.4 locks shall not be engageable during normal operation.
8.1.5 any hydraulic locks shall be manually operated and independent of the control system.
8.1.6 system pressure relief valves shall operate if movements is attempted whilst the locks are engaged.
8.2
jacks
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8.2.1 if specified in table 11, a permanently attached, adjustable jack, with two legs , shall be provided by
the vendor.
8.2.2 it shall not be possible for the base of the jack to retract above the lowest protrusion of the loading
arm. The position and height of the jacks shall comply with OCIMF manifold standards.
8.2.3 supports shall be mounted such that the loading arm is free to move with the ship to which it is
connected.
8.3 stray current protectors
8.3.1 an insulating flange or an integral joint shall be inserted near the triple swivel assembly of the arm to
electrically electrically isolate the ship from the loading arm. The flange shall not be in a permanent
vertical orientation and shall be located in a position where it can’t touch the ship structure. An integral
joints is a purposely designed and fabricated piping item with a built-in insulating joint. It can be welded
into a piping system.
8.3.2 insulating materials used shall assure that the flanges are imperious to moisture and are compatible
with the product properties and temperatures involved.
8.3.3 the insulation joint shall be able to support the loading arm design loads without leakage and without
loss of insulating resistance.
8.3.4 the gasket used in the insulating flange shall project approximately 3mm into the bore of the flange.
The annular space at the flange outside diameter shall be filled with no-conductive material and sealed to
prevent ingress of moisture. Paint shall not bridge or cover the flange annular space or any other insulating
plastic parts.
8.3.5 insulating non-metallic flexible hose shall be used in any hydraulic, lubricating, purge or drain
systems that bridge the insulating flange.
8.3.6 to ensure centering, the outside diameter of the gasket shall extend beyond the bolt circle with
clearance holes cut for bolts
8.3.7 plastic washers or other suitable material, shall be used under metal washers at both ends of the bolts
ends of the bolts to insulate bolts from both flanges. Insulating sleeves shall be used at both ends of the
bolts, or a single long sleeve extending 90% of the distance between washers shall be provided.
8.3.8 metal washers shall be flat and free of sharp edges. Bowed stampings are not acceptable.
8.3.9 the resistance of the insulating flange shall be no less than the following values:
as manufactured after installation in the arm
-10000 ohms at 1000v
after hydrostatic testing
-1000 ohms at 20v
when the arm is in service
-1000 ohms at 20v
measurement shall be performed with the arm in empty condition at ambient temperature.
8.4 valves , flanges and connections
8.4.1
flushing connections , if specified , in table 11 shall be at the lowest practical point on the riser.
8.4.2
valved drain connections shall be provided in a manner that allows complete drainage of the arm
before disconnection. Outboard arm drains shall have an outer cover to protect them against damage but
which shall not prevent removal of the valves for maintenance. The size of the drain connections shall be
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based on the size of the loading arm. But shall not be less than NPS 2 (DN 50) on the riser , or NPS 1(DN
25) on the outer arm. NPS 1 connections shall be reinforced.
8.4.3 when specified in table 11 , stainless steel vacuum breakers shall be provided near the apex of the
loading arms that do not have an insert gas purge system. Vacuum breaker shall be ball or plug type, sized
to give a short time run-down, and fitted with stainless steel non-return valves that function effectively in
all arm positions. Operation of the vacuum breaker shall from the triple swivel assembly. A method for
indicating the position of the vacuum breakers shall also be provided at the triple swivel assembly. A rubber
sheathed wire rope for the first 2m and synthetic rope for the remainder shall be used for actuation.
8.4.4 there shall be a plugged connection at the base of the riser and at the triple swivel assembly for a
pressure gauge, which if required will indicate the presence of product in the arm.
8.4.5 when specified in table 11, a stripping system , including pump shall be provided by the vendor for
draining the inboard arm and the riser into the outboard arm. Ref. Figure 7.
8.4.6 for vessel unloading and where the product is defined by MARPOL annex II as noxious, the vendor
shall propose, for owner’
s approval , a method of draining the outboard arm to shore.(ref. Regulation 7.)
8.4.7 liquefied gas loading arms shall be provided with an insert gas purge system, fitted with a non return
valve at the connection to loading the loading arm.
8.4.8 bellows and hoses , shall not be used in liquid product lines on liquefied gas arms.
8.5 fixings
the manufacturer shall design and supply , when specified in table 11, all anchor bolts, nuts, washers,
fasteners, templates and any special tools required. templates shall be manufactured , properly marked , and
trial fitted to the base of each arm prior to shipment. Templates may be shipped to the installation site after
trial fitting, but prior to shipment of the arm assembly itself, in order to facilitate early civil engineering
work in the preparation of foundations.
8.6 lubrication
8.6.1 when specified by the owner, ref. Table 11, a lubrication system shall be provided.
8.6.2 lubrication of equipment shall be possible without dismantling.
8.6.3 all lubrication points shall be accessible in the stowed and maintenance attitudes.
8.6.4 readily visible lubrication relief ports shall be provided.
8.6.5 when specified in table 11, grease cartridges shall be easily installed from the jetty or maintenance
platform.
8.6.6 the lubrication system shall be primed with the owner’
s specified grease ref. Table 11 prior to site
acceptance of loading arm.
8.6.7 grease lines and fittings shall be of austenitic stainless steel ref. Table 19 and shall be at least NPS 1/2
(DN 15).
8.6.8 each raceway shall be fitted with grease and relief ports. They shall be sufficient ports to ensure even
distribution grease.
HYDRAULIC POWER SYSTEMS
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When hydraulically powered arms are specified , ref. Table 11, a common hydraulic power unit(HPU) shall
be provided for the bank of arms. The hydraulic power system shall be designed and sized for the
following:
a.
single arm manoeuvring , covering :
-luffing and slewing for normal operation, which includes the capability of manoeuvring over the
ship’
s rail and manoeuvring into the maintenance position.
b. connection and disconnection of the QC/DC ref. Table 11 for operating time.
c.
Normal operation of the ERS valves,ref. Table 11 for operating time.
d. Emergency operation of the ERS ref. Table 11 for ERC operating time.
e.
Following an ERS operation , the released end of the arm(s) shall immediately begin to rise by
approximately 2m into a hydraulically locked position . the average speed shall be 0.15m/s.
f.
Maintaining accumulator pressure.
g. Manoeuvring velocities, ref section 4.1.13 including acceleration forces, at the manifold end in the
connection area.
h. Manoeuvring , following ERS operation of the following:
-
the full outboard arm to just above horizontal position to facilitate draining
-
the full and empty loading arm to the stowed attitude
-
the full and empty loading arm to the connected attitude to reconnect the ERC.
i.
accommodation of the hydraulic fluid flow and pressure for the following conditions :
-
free wheel mode ,normal ship movements
-
free wheel mode at drift speed as specified in table 12 or 13
-
control mode during connection , normal ship movements
-
control mode , (inadvertently left in position), at drift speed specified in table 12 or 13.
j.
wind , self weight , product and any ice loads , as specified in table 10.
k. Swivel and sheave or pantograph friction loads.
l.
10% of valves (j)and (k) for efficiency losses.
9.2 each hydraulic circuit, or section which can be isolated , shall have relief valves of sufficient size to
protect the loading arms , including hydraulic system, from damage during normal operation and
emergency release or due to operator error, malfunctioning , and hydraulic or electric power failure.
9.3 hydraulic cylinders shall have relief valves fitted as close as possible to them.
9.4 when specified in table 11 a manually operated hydraulic pump shall be provided , to allow the arms to
be manually returned from any position to the stowed position.
9.5 when specified in table 11 , the hydraulic power pack shall incorporate two 100% duty
electro-hydraulic pumps, one being a standby.
9.6 the reservoir drain shall be located point in the base.
9.7 the hydraulic power pack shall be fitted with a 25 micron filter on the pump discharge and in the return
line . the filter shall be replaceable and fitted with a high pressure by-pass and a differential pressure
indicator.
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9.8 hydraulically powered arms shall have an independent flow control valve installed in each cylinder line,
each of which shall have a lockable tamperproof cover.
9.9 hydraulic cylinder shall be fitted with plugs at appropriate locations to facilitate venting and flushing.
9.10 pipe runs shall be positioned to avoid mechanical damage. The number of fittings shall be minimized .
all fittings shall be of a single standard and double ferrule type. Threaded fittings in hydraulic pressure line
shall be prohibited except for fitting of gauge and control valves. All piping shall be securely supported
and , where attached to carbon steel , insulated fittings shall be used to avoid corrosion.
9.11 hydraulic hoses shall be of the swaged coupling type with the working pressure and test pressure
clearly marked.
9.12 the use of sealing materials that can result in blockage/seizure of hydraulic components (e.g PTFE
tape) is strictly prohibited.
9.13 spool type selector valves shall be such that it is impossible to reassemble the valve incorrectly. Spool
valves shall be provided with drain ports to prevent their leakage from inadvertently pressuring hydraulic
systems such as the ERC or QC/DC release.
9.14 hydraulic reservoirs shall be provided with a diaphragm to accommodate differing oil levels without
allowing the ingress of air , alternatively , a breather valve with a moisture filter may be used . fill ports
shall be provided and fitted with 25 microns strainers.
9.15 hydraulic fluid shall be suitable for operation at a temperature which is at least 15℃below the
minimum ambient temperature.
9.16 it shall be possible to isolate each loading arm from all other arms and hydraulic power unit. These
valves shall be protected against accidental operation.
9.17 cleanliness of hydraulic circuit system shall be the more stringent of class 6, NAS 1638 (or equivalent)
or the standard set for the valve assemblies by their manufacturer. The water content of the hydraulic fluid
shall not exceed 0.1%.
9.18 independent flushing of each of the hydraulic circuits shall be possible.
10.0 CONTROLS
10.1 general
10.1.1 all electro-hydraulically powered arms shall be equipped with :
a.
a common control console , ref. Table 14, positioned on the jetty having good visibility of all arms
when they are presented to the vessel , being stowed or being parked for maintenance.
b. when visibility is likely to be restricted, a minimum of one pendant control ref. Table 15 operable
from the ship’
s deck.
Alternatively remote control systems may be proposed for approval, ref. Table 16.
10.1.2 pendant(s) shall operate the arms in all motions , operate valves and , where applicable, hydraulic
QC/DC and have a control /freewheel switch.
10.1.3 the design shall ensure that only one arm in the bank can be manoeuvred at a time , whether from
- 27 -
the pendant , local control panel or radio control.
10.1.4 manoeuvring controls on the console shall be inoperable when the pendant controls are in use, and
vice versa. A selector switch shall be provided , on the central console , which shall be robust and provide
a positive location for each operating attitude.
10.1.5 motion controls shall reture to the hydraulically locked condition on release of the push button
controls.
10.1.6 separate pressure indicators shall be provided to display the different hydraulic oil pressures in the
arm. QC/DC and ERC hydraulic systems, as applicable.
10.2 range alarms and shutdown systems
10.2.1 solid state inductive proximity switches shall be used.
10.2.2 arms not having ERS shall be fitted with single stage alarm systems for luffing and slewing, and be
adjustable through the full range of the operating envelope. The (initial) set point for the alarm shall be as
specified in table 13 and is illustrated in fig 4.
The first stage alarm will initiate the following :
a.
ERS ball valve closure
b. berth emergency shut down (ERD) system
c.
product pump shut down
d. hydraulic pump start-up
the second stage alarm will initiate the ERC operation , on receiving a signal from both first and
second stages.
If no signal is received from the first stage alarm then functions a ,b and c above will be performed at
the second stage alarm followed immediately by ERC operation.
At any initiation of a first stage alarm the ERS valves of all connected arms will close, the emergency
shutdown system will be activated and all the product loading pumps will stop.
At electrically and manually initiated second stage alarms all connected arms will disconnect
simultaneously.
10.2.4 visual and audible alarms shall be agreed with the owner.
10.2.5 when specified in table 12 a pre-alarm shall be provided in addition to the first and second
stage alarms, which will not initiate any function, other than human intervention.
10.2.6 if any switch fails , e.g. cut wires , a red lamp will be illuminated on the control panel.
10.3 Emergency release system (ERS)
10.3.1 see section 7.1.10 for methods of ERS initiation.
10.3.2 if specified in tables 14 or 15 switches shall be provide on the central control console and
pendant to operate the ERS valves independently of the emergency functions. But it shall not be
possible to operate these functions following an emergency release and prior to re-connection.
10.3.3 the slewing function shall remain in hydraulic freewheel mode following an ERS operation.
10.3.4 when specified in table 11 ERS valve interlocks shall have the following features:
a.
mechanical interlock
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the block valves shall be mechanically interlocked with the ERC to ensure that the ERS
product valves are closed before the coupling can be released . devices relying on spring closure
only are not acceptable. The interlock valve shall be designed to prevent valve opening following
ERC activation.
b. hydraulic interlock
a three port spool type hydraulic interlock valve, having a positive seal on the pressure side
and a central drain port to prevent leakage pressurizing the ERC circuit. The drain shall be
independent of any other drain system. Alternatively an atmospheric vent, designed to prevent
water/dirt ingress, may be used.
10.3.5 there shall be pressure switch with lockable isolating valve and a pressure gauge
downstream of ERC solenoid valve. The pressure switch shall initiate an audio and visual
alarm on rising pressure and the first stage shutdown sequence.
10.3.6 the ERS control system shall have the following features:
a dual piston type ERS with separate hydraulic solenoid valves for ERS valve closure and
ERC release.
b. interlock to prevent ERC initiation when an arm is manoeuvred or is in the stowed or
maintenance position.
c. ERC hydraulic actuator drain line shall be run to the tank via the ERC solenoid spool
valve.
d. the ERC valve return to tank drain shall be separate from other control circuit drains.
e. the first and second stage alarms shall have a common button for silencing. Silencing the
first stage alarm shall not stop the second stage alarm from sounding.
f.Actuation of the first and second stage alarm due to electrical failure, (e.g cables cut
conditions)shall not initiate operation of the ERS valves and ERC. On power reinstatement the
reset logic must also prevent ERS operation.
g. Proximity switches for the stage alarm shall be closed during normal operation
h. Facilities for routine testing of control system e.g. interlocks , alarms, lamps, etc.
10.3.7 lamps shall be provided on the central control console to indicate availability and
non-availability status of the ERS, and ERS valves status . provision shall be made for individual
valve repeats in the jetty control room. Local valve position indicators shall be provided at the
ERS valves.
10.3.8 the ERC shall have indicators to confirm correct reassembly.
11.0 ELECTRICAL COMPONENTS
11.1 general
11.1 the electricity power supply shall be as specified in Table7.
11.1.2 the jetty earthing details are shown in table 8.welded earthing strips shall be provided at the base of
the riser.
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11.1.3 electrical and instrumentation equipment for use in areas classified as hazardous shall be certified
by a nationally recognized body for use in the hazardous area specified in table 9.
The barriers for any intrinsically safe equipment must be located in a “safe”area.
11.1.4 pedants shall be of robust design , and shall securely hold the attached cable. Cable lengths shall be
minimized . it shall not be possible to bridge the electrical insulating flange . pendants shall have anti-static
properties.
11.1.5 all equipment and materials shall be suitable for operation in the specified ambient temperature
range. Enclosures , switches , buttons , etc. shall be as a minimum to IEC 529, class IP 56 or equivalent ,
and corrosion resistant to a salt-bearing and refinery atmosphere.
11.2 electrical
11.2.1 electrical equipment shall be suitable for the specified operating voltage range and frequency.
11.2.2 electrical equipment shall be designed for intermittent operation.
11.2.3 the main switchboard shall be supplied ready for field installation. Equipments and materials shall
be supplied complete with all interconnecting cables, junction boxes, cable glands, fixing , etc.and isolating
switch complete with cable gland to terminate the incoming power supply cable. All accessories not
specified , but required to complete the installation, shall be supplied unless specifically excluded.
11.2.4 the equipments and installation shall meet with the requirements of the institute of petroleum (UK),
model code of safe practice, part 15 or equivalent.
11.2.5 the main power supply cable (provided by a third party supplier other than the vendor ) shall have
overload protection. The isolating switch , provided by the loading arm manufacturer, shall be rated
accordingly.
11.2.6 where motors are not visible and/or audible from the control position , the ‘start/stop’control station
shall be equipped with motor ‘running’and ‘stop’indication. For motors above 3.75 kw output, this shall
consist of an ammeter with the scale marked in red at full load current. For motors up to 3.75 kw output,
indication shall be given by ammeter or coloured lamps.
11.2.7 motor ‘stop’push-buttons shall be self reset type..
11.2.8 cables installed on the loading arm shall be for intrinsically safe circuits only and comply with the
certification requirements with regard to limiting cable parameters.
11.2.9 flexible cables shall be installed on the articulated sections of the loading arms. The outer sheath of
flexible cables shall be impervious to hydrocarbon and salt water, resistant to U.V light and shall maintain
flexibility with the temperature rang specified in the service conditions and shall be corrosion resistant.
12.0TESTING
12.1 general
12.1.1 each of the following tests, test procedures, test liquid quality, measuring equipment and acceptance
criteria shall be submitted to the owner for written approval before testing commences.
12.1.2 testing shall be witnessed by the owner or his representative.
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12.1.3 before painting at the vendor’s works, cast and welded arm sub-assemblies, ERS and QC/DC shall
be hydrostatically tested to 1.5x design pressure and maintained for at least 30 minutes.
12.1.4 for 18/8 and 9%Ni steels potable water shall be used for testing.
12.1.5 during testing , the arm should be restrained if required for personal safety.
12.2 normal temperature service (above 0℃)
a complete hydrostatic test shall be performed at site with the arm fully assembled in the hydrostatic
test position , when the test pressure shall be maintained for not less than 30 minutes.
12.3 low temperature service (0℃ or lower)
after the hydrostatic test at the vendor’s works, all sub-assemblies shall be dried. Drying by direct
application of heat is prohibited.
At site before operation, the fully assembled arm shall be leak/soap tested with nitrogen or dry air. The
test pressure shall be 6 bar(g) (87 psig) and shall be maintained for at least 30 minutes.
12.4 one arm of each size being supplied , complete with its hydraulic power unit, shall be erected at the
vendor’s works. The following tests shall be carrying out and tests(c), (d) and (f) recorded on video film
with suitable marking of dates and times of events to enable accurate assessment of performance.:
a.
balance test .
b. the empty loading arm to be manoeuvred to its maximum reaches within the envelope, including over
the highest ship’
s rail position and to its maintenance position. All alarm settings shall be checked.
c.
The QC/Dc , if specified shall be tested for release performance under normal operating conditions.
d. The ERS, if specified , to be fully tested with the loading arm both empty and full, or simulated full,
by moving a dummy manifold through the alarm stages in the envelope for surge and sway.
e.
Following emergency release separation, the full loading arm to be manoeuvred from the raised
position to the stowed attitude and the outboard arm raised over the horizontal.
f.
A reconnection operation to be carried out with the empty arm.
g. The ERS to be further tested from a static position (location in the envelope to be agreed) using –
-The push button on the control panel; and
the accumulators to simulated a power failure.
12.4.2 QC/DC operation shall be demonstrated at the vendor’s works for –
a.
each size of adapter to be supplied,
b. the full range of flange size and outside tolerances specified .
12.4.3 the factory tests shall be demonstrate the following:-
complete hydraulic power system;
-
control and alarm systems;
-
operating times of the ERS valves and ERC;
-
operating times of the OC/DC;
-
safe operating of the loading arm and the ERS;
-
operation of the various interlock;
-
operation of the control panel and the pendant;
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-
operating envelope at jetty level;
-
specification compliance checks; and
-
automatic pump start-up, for falling accumulator pressure and initiated by the range
alarm.
12.4.4 after installation at site, the vendor shall repeat the above operational tests for specified arm
combinations, checking that the loading arms will reach all positions of the vessel manifold envelops at the
specified ship manifold spacings. All clearances shall be checked against the clearance study. Each loading
arm shall be checked for balance and adjusted if necessary.
The ERS site tests shall be recorded on video film.
12.4.5 the complete hydraulic circuit shall be pressure tested on site to 1.5x design pressure.
12.4.6 the ERS shall be tested to show that accidental release with the ERS valves open, cannot occur due
to failure of electric or hydraulic power or components. The components shall be tested to prove the
integrity of the system under the failure conditions determined from the failure mode and effects analysis.
12.5 swivel tests
12.5.1 if proof test certificates ( for swivels of the type and size proposed and having at least the same
loading ) are unavailable or unacceptable, the swivel shall be proof tested at the vendor’s works as follows:
12.5.2 after hydrostatic testing at the vendor’s works , swivel assemblies shall be partial vaccum tested at
0.515 bar (abs)(7.5 psai). The operating pressure shall then be applied to demonstrated that the seals re-seat
correctly.
12.5.3 swivel assemblies shall be leak tested whilist being rotated at least ±5°at 0.1 Hz and a pressure of
10 bar (g)(145 psia). Or the specified operating pressure if higher. The duration of this test shall 30
minutes.
12.5.4 the swivel shall be tested at design pressure with test loads Pct
12.5.5 Pct shall be maintained if internal pressure is lost by increasing other test loads accordingly.
Pct=TlfxPca
Where
Pct=test load
Tlf=test load factor
Pca=combined swivel design load , ref. Sections 5.5
12.5.6 test loads shall be applied at ambient temperature as follows:
Stage
1
2
Service
Liquefied gas
general liquid
Tlf
1.5
2.0
3
4
3.0
3.5 or 4
Acceptance criteria:
a.
at test 1 brinelling shall be within acceptable levels, ref. Section 5.6(a)
b. at test 2 there shall be no leakage , ref. Section 5.6 (b).
c.
at test 4 there shall not be any structural failure, ref. Section 5.6(c) and(d).
the swivel shall be disassembled and inspected for brinelling after each of the tests 1,2,3 and 4. the vendor
- 32 -
shall provide a graph of Brinelling vs Pct as part of the test documentation.
12.5.7 for liquefied gas applications, the swivel shall also be tested as above at minimum design
temperature. The leakage rate at stage 4 shall not exceed 17.5 cc/min of test gas (0℃, 1bar) per centimeter
of seal diameter.
12.5.8 for swivel nitrogen purge systems the following test at the vendor’s works shall be carried out:
with the nitrogen purge system in operation , expose the swivel to design temperature and stabilize.
Spray with water until a 10mm layer of ice forms. Temperature shall be held for one hour . allow the swivel
to return to ambient temperature and dry externally . disassemble the swivel and inspect the internals for
water collection, formation of ice or damage to the seals. Monitor nitrogen purge pressure throughout the
test and maintain it at the pressure level/rate specified fro the field application. The swivel shall be rotated
and oscillated throughout the test as specified in section 13.5.3.
12.6 emergency release system(ers) tests
12.6.1 if proof test certificates are not available or unacceptable for an ERS of the same type and size
specified and having at least the same test loads , the ERS shall be tested at the vendor’s factory using a test
equipment load (Lct). in addition the vendor shall prove by calculations that the ERS would not suffer
structural failure at Tlf=3.5 and 4.0 for general and liquefied gas duties respectively.
12.6.2 the test equivalent load (Lct) is expressed asLct=TLFxLCA
LCT=test equivalent load
TLF=test load factor
LCA=maximum design equivalent load , ref .section 7.1.21.
12.6.3 the test loads shall be applied at ambient temperature and TLF=2.
Acceptance critera:a.
there shall be no liquid leakage –all duties.
b. There shall be no permanent deformation –all duties.
12.6.4 ERS for liquefied gas service shall be tested , at ambient and design temperatures.
Test conditions shall be maintained for at least 30 minutes.
12.6.5 one ERS of each size specified shall be tested for release performance under the following
conditions, the test shall be performed three times . in all tests the ERC shall release immediately upon
activation.
The test conditions which shall be applied simultaneously are:
a.
design temperature (minimum design temperature for liquefied gases).
b. LCA
c.
For liquefied gas service, an ice build up as specified in section 4.2.6.
12.6.6 for liquefied gas service , test shall be carried out at the minimum design temperature on ERS
valves of each type, size and material specified. Test procedures shall include the following :
a.
once the temperature has stabilized, valve operating torques or the actuator hydraulic pressure
shall be recorded for 20 operations.
- 33 -
b. Seat and gland seal leakage rates shall be measured and recorded with the unit pressurized
with vapour to 3 bar (g) (43.5 psig), 10 bar (g) (145 psig), and design pressure . test shall be
repeated until two successive tests give similar leakage rates (within 10%) for the same
pressure.
After hydrostatic testing , all ERS valves shall be dried and subjected to pneumatic seat and gland seal
leak tests in accordance with AP6D or national equivalent.
12.7 quick connect/disconnect coupler(QC/DC)tests
12.7.1 if proof test certificates are not available or unacceptable for a QC/DC of the same type and size
specified and having at least the same test loads, the QC/DC shall be tested at the vendor’s factory using a
test equivalent load (LCT). in addition the vendor shall calculation that the QC/DC would not suffer
structural failure at TLF=3.5 and 4.0 for general and liquefied gas duties respectively.
12.7.2 strength tests shall be carried out on the most critical QC/DC and manifold combination.
12.7.3 the test equivalent load (LCT)is expressed as:
(LCT )=TLFxLCA where
LCT=test equivalent load
TLF=test load factor
LCA=maximum design equivalent load, ref.section 6.5.
12.7.4 the test loads shall be applied at ambient temperature and TLF=2;
acceptance criteria:
a.
there shall be no liquid leakage
b. there shall be no permanent deformation
the tests shall be held for at least 30 minutes.
The coupler clamps shall be oriented so that a minimum number of clamps are in tension from the
test bending moment.
12.7.5 QC/DC for liquefied gas services, shall be tested at ambient temperature and design temperatures.
12.7.6 one QC/DC of each size specified shall be tested for disconnection performance under the
following conditions. The test shall be performed three times. In all tests the QC/DC clamps shall operate
in the time specified in Table 11.
The test conditions which shall be applied simultaneously are:
a.
design temperature (minimum design temperature for liquefied gases).
b. LCA
c.
For liquefied gas service, an ice build up as specified in section 4.2.6.
13.0 QUALITY ASSURANCE AND QUALITY CONTROL
13.1 Quality system
the vendor shall demonstrate that it has implemented and maintains a quality system in line with the
requirements of ISO 9001.
- 34 -
Vendors quality system shall demonstrate adequate capability for the design/development,
manufacture, testing, installation , commissioning and servicing of the loading arm(s) and associated
equipment.
13.2 quality plan
within one month of the contract award, the vendor shall submit to the owner a project quality
assurance plan which shall detail e.g. all activities, the resources , responsibilities , key personnel, working
procedures and practices to carry out all the activities for the supply of the loading arms and associated
equipment in an efficient and effective manner.
The quality assurance plan shall incorporate the detailed quality control plans for design ,
manufacturing and testing etc.
The detailed quality control plan shall cover as a minimum the following :

Compliance with statutory and specified requirements;

Materials of all components;

Welding procedures and qualifications;

Heat treatment procedures;

Non destructive testing;

Proposed repair procedures;

All tests within scope of supply;

Dimensional checks;

Cleanliness of hydraulic system;

Painting and corrosion prevention.

Certification and testing of electrical and instrumentation equipment;

Electrical resistance of insulating flanges; and

Packing and preservation.
14.0 REQUIRED DOCUMANTATION
14.1
tender documentation
table 18 (two sheets ) lists documents to be provided by the vendor during the tender.
14.2
contract documentation
table 19 (four sheets) lists documents to be provided by the vendor following contract award.
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Part III
Guidelines to Parts I and II
1.0
INTRODUCTION
Part III are guidelines to those specified requirements marked with an asterisk( *) in parts I and II.
It is in the form of a commentary and provides background information and reasons for specified
requirements.
2.0
GUIDELINES
2.1 reference sections 4.1.3, 4.1.4, 4.1.5 and 4.1.6
2.1.1the above sections are inter-related and basically cover the aspects which influence the
maximum reach requirements of loading arms. To establish the maximum reach it is essential to understand
the relevance of the reference and composite envelopes.
2.1.1.1reference envelope
figures 4 and 5 show a typical reference envelope which is based on the following:
a.
the full range of ships using the berth.
b. The specified horizontal manifold movements ref. Tables 12 and 13 are normally taken as being at the
worst conditions, i.e:
For oil tankers at the bottom of envelope; and
For liquefied gas carriers at the bottom of the envelope, this may also be at the top of the envelop,
because these vessels sit high in the water.
Because of the circular movement of loading arms, this results in larger movement capacities at
intermediate manifold positions in both plane and elevations.
c.
elevation changes due to tides , ref . table 10.
d. Elevation changes due to freeboard (or draught)，ref .table 3 and figure 1.
e.
The location and height of the manifold, ref. Table 3 and figure 1.
It should be noted that the worst combinations (c ) and (d) are:

Largest empty or ballasted vessel at maximum water level: and

Smallest full vessel at minimum water level.
The specified horizontal movements should be based on the maximum attitude drift velocities in the surge
and sway directions, time required for the operation of any ERS and accuracy of mooring on the spotting
line.
2.1.1.2 composite envelope
figure 9 shows the development of a composite envelope based on the following:
·the composite envelope is for №2 which is in a bank of four arms.
·arm №2 can operate alone , simultaneously with arm №3, or simultaneously with №.3 and 4.
·for each service, the center-line of the manifold group will be on the center-line of the arm or arms in
service.
Figure 9a is the reference envelope for arm № 2.
- 36 -
Figure 9b shows the envelope for arm №2 when operating simultaneously with arm №.3.the minimum
and maximum manifold spacings are shown. The maximum spacing governs the maximum reach to the left
hand side of the envelope and the minimum spacing governs the maximum reach to the right hand side of
the envelope.
s. 3 and 4.
Figure 9c is derived in the same way of arm №2 when operating simultaneously with №’
Figure 9d is derived in the summation of figures 9a, 9b and 9c is the composite envelope showing the
maximum reach requirements for arm №2.
Figure 9d shows that the reach capacities of the composite envelope for arm №2 exceeds the basic
specified requirements for arm № 2 reference envelope, ref. Figure 9a. this is an advantage , but great care
has to be exercised in positioning specified alarms, ref. Tables 12 and 13 and figure 4 and 5. the alarm
positions have to be suitable for single and simultaneous operation. This may require relocation of the
spotting line for figure 9a and 9b to maintain the surge and sway specified requirements.
2.2 reference section 4.1.7 clearance study
it is the owner’
s responsibility to supply the vendor with a final drawing of the jetty layout in
elevation and plan, at an agreed date, for the vendor’s clearance study.
The specified recommended minimum clearances are operating requirements i.e. after any deflections
and fabrication and erection tolerances. Figure 11 shows the location of main clearance checkpoints. These
are guidelines only and should not be treated as finite. The loading arm manufacturer has the responsibility
to identify all check points where there is the potential for interference.
Minimum manifold centers on some ships give less than 0.3 m between adjacent ERS and adjacent
OC/DC.
2.3 reference section 4.1.8
the clearance between the outermost part of a stowed arm and the jetty face should be as large as is
practical.
It should not be assumed that a stowed arm is free from contact with a ship , even if the arm does not
protrude beyond the jetty face.
2.4 reference section 4.2
general
the specified requirements for stress analysis of the product lines generally follow the pressure vessel and
piping design codes i.e.BS5500, ASME B31.3. and ASME VIII
the objective of the adapted procedure is to obtain approximately the same level of conservatism as in the
second edition of this publication.
2.5 reference section 4.2.7
thermal loads are created when thermal expansion or contraction is fully partially restricted .
in the case of loading arms handling very low temperature products , e.g. LNG and ethylene , the product
lines are supported in a manner which allows them to contract and expand freely, thus preventing axial
thermal loads.
However the temperature gradient over wall thickness and over the pipe diameter when there is partial flow
- 37 -
as the product cascades over the apex, can give rise to significant stresses and possibly permanent strain.
These stress shall be considered in design.
2.6 reference section 4.2.8
the specified procedure for establishing wind loads is adapted from ASCE7(1995) and shall be
universally used for loading arm.
2.7 reference section 4.2.9
the K factors listed in table 17 maintain, at least the same safety standards as in the 1987 issue of this
specification and have been established as follows.
Cases
1&2
remarks
The empty loading arm is considered as a civil structure to AISC code
k
1.2
1
with 33 /3% increase for the extreme wind/earthquake conditions.
3
Normal manoeuvring is always empty nd considered as a civil structure to
0.9
AISC code
0.6 x yield stress =K x yield stress/1.5
4&5
These are the most onerous conditions and require the highest level of
0.8
safety.
1.0x0.49x yield stress = K x yield stress/1.5
K=0.74
6
Similar rational as cases 4&5
2.0x 0.49 x yield stress = k x yield stress / 1.5
k=1.48
7&8
These occur infrequently but are considered onerous conditions
1.1
1.4x0.49x yield stress=k x yield stress / 1.5
k=1.03
9
Same as for case 3
0.9
10
1.8x 0.49x yield stress =k x yield stress / 1.5
1.3
k=1.32
2.8 reference section 5.2
lubricating grease can be used in product swivels for refrigerated LPG service. At the current time
lubricating greases are unsuitable for temperatures below minus 65 ℃.
Structural bearings can be less affected than swivels by product temperatures. Nevertheless, for very
low temperature products e.g. ethylene and LNG, the same temperature criteria applies to the selection of
lubricating grease or nitrogen purge system.
2.9 reference section 7.1.8
during simultaneous emergency release of a number of loading arms it is essential that their movements
are the same, particularly for initiation and speed of movement. Therefore , it is important to place an
accumulator at each loading arm to ensure that resistance and therefore hydraulic fluid flow is the same for
- 38 -
each loading arm.
2.10 reference section 7.1.12
the frequency and extent of ERS testing will depend on the Owner’s safety procedure. For liquefied gas
duties, some Owner’
s test ERS, without ERC operation, before the arrival of each gas carrier.
2.11 reference section 8.3.3
the leaking of bolted flange connections in LNG services systems is not uncommon. The problem has
been identified as one of assessing the valve of initial bolt load to account for the components of bolt load
required to overcome the several effects that influence the tightness of the connection as follows:
·
bolt loads required for external loads:
·
bolt load required to seat the gasket;
·
bolt load required to accommodate the internal pressure ; and
·
bolt load required to accommodate loosening effects due to temperature and thermal cycling.
Flanges gasket characteristic must allow elastic recovery of the gasket when the external loads and
moments are relaxed .
2.12 reference section 9.14
the use of a diaphragm in the hydraulic reservoir is preferred because it excludes the ingress of air and
hence and any moisture. The use of breather valves with a moisture filter should not be in areas of high
humidity.
2.13 reference section 9.15
when there are extremes of ambient temperature, the hydraulic fluids shall have a stable viscosity over
the specified temperature range.
2.14 reference section 9.18
because of the nature loading arms , there are sections of the hydraulic circuit where the hydraulic
fluid does not flow into and out of the reservoir. Therefore it is essential that there is the capability for
individual flushing.
This will expedite maintenance and reduce any downtime due to contamination.
2.15 reference section 12.4.1
loading arms shall not be tested using the vendor’s factory hydraulic power unit, because of the
potential incompatibilities, i.e. performance characteristics, fluid cleanliness, fluid specification, etc.
additionally , using the vendor’s unit will not allow identification of problems in the new unit before
installation.
2.16 reference tables 1 and 2
in the case of pressurized liquefied gases and partially pressurized refrigerated liquefied gases, it is
recommended that the minimum design temperature in table 2.1 , be based on the atmospheric boiling
temperature of the product in table 2.2.
the design pressure shall allow for any pressure surge effects caused by the closure of jetty, ship or
loading arm valves , as appropriate. If necessary surge pressure relief systems may be considered to
accommodate surge pressure.
- 39 -
The flowrate through loading arms should be based on maximum flow velocities of 12 m/sec. Higher
velocities may cause vibration and even cavitation at elbows. Therefore velocities higher than 12 m/sec.
Should be treated with caution.
In addition, careful consideration should be given to velocities through flow restrictions to avoid
cavitation, e.g. reduced bore valves. This potential problem is more likely with shiploading , where the line
pressure is low, and when handling products having low vapour pressures, e.g. liquefied gases.
The size and number of loading arms for a particular application is based on the following:

product parcel size (s);

product transfer duration;

size and number of ship flanges;

flow rate for each arm;

simultaneous transfer of products (where applicable); and

contamination considerations.
Some loading arms handle multi-products where contamination is not a problem or when the remains of a
product can completely evaporate before re-use. However refrigerated liquefied gas loading arms should
always be product dedicated because of the danger of a remnant product being frozen by the liquefied gas.
The flow rate may be governed by the following:

pump capacities;

product properties;

product temperature;

venting capacities of storage tanks;

total piping system pressure drop including loading arm;

elevation of liquid level in terminal storage and in ship tanks;

flow resistance in vapour return lines;; and

for ship unloading , the changing elevation of the pump.
2.17 reference table 3
the manifold setback should include the effects of any spool pieces which are expected to be in place
when the loading arm is to be connected.
2.18 reference table 11
2.18.1 operation
manual operation of marine loading arm may be considered for arm diameters up to 150/200mm,
provided that the arm is only manoeuvred when empty, the length of the arm is relatively short and the arm
is operated at moderate wind conditions. On larger arms the wind loads may become too high for manual
manoeuvring.vendor’s confirmation should be the feasibility of manual operation.( loading arms fitted with
ERS are hydraulically operated irrespective of size).
2.18.2 Emergency Release Systems(ERS)
ERS are used for the following reasons:

protection of the environment;
- 40 -

protection of personal ;

protection of the installation and ships;
the decision to use an ERS should be used on consideration of those reasons, the product, loading rate,
frequency of loading operations and the site conditions, which influence the behaviour of the ship on the
berth. The installation of ERS are normally not essential for facilities in well protected harbours, where
ships or barges can be securely moored with minimal impact of wind, tide and current and surge from other
ship movements in the vicinity is not a problem. ERS are always used for liquefied gas duties unless
otherwise specified because of the large volumes of flammable vapours formed on liquid spillage and the
high liquid transfer rates at many refrigerated and pressurized gas terminals. They may also be justified for
other duties, e.g. crude oil, where a spill is a large risk to the environment.
2.18.3 ERS product valve closure time
during an emergency operation, the closure of the ERS valves is co-ordinated with the closure of any
jetty emergency shut down (ERD) valves.
The maximum closure time of the ERS valves is based on the distance available in the envelope and the
drift speed of the ship.
Ideally the valve closure times should not cause unacceptable surge pressures nor column separation. If
this is not practical then pressure alleviation devices may be required.
Surge pressure is more likely to be a problem, with ship loading because of the up stream pipe distances,
whilst column separation is more likely to be a problem, with ship unloading , on the down stream side of
the valves.
2.18.4 ERC opening time
the emergency release coupling (ERC) should open as quickly as possible. (under normal circumstances,
the clamp type coupling appears to open instantaneously).the specified opening time should be one (1)
second and all components should be free and completely clear of the separation path of the two pipe ends
within two seconds total.
This operation has to take place within a defined distance in the envelope , based on the drift speed.
2.18.5 ERS product valves
for safety reasons, ball valves shall be used for liquefied gas duties. Reduced bore valves may be used to
save considerable weight and reduce the trapped volume of liquid between the valves. The pressure drop
along a loading arm is seldom a problem, but could be a reason for using full-bore ball valve.
There is a risk of cavitation in reduced bore valves, see section 2.14. parts III.
Other types of valves may be used for general duties as discussed in part 1.
2.18.6 mechanical interlock and hydraulic interlock
the selection of interlock will normally depend on the owners preferences and experiences. The cost
difference is insignificant and should not be a consideration.
Both systems are hydraulically operated, and the main difference is that the ERC is mechanically
interlocked with the ERS product valves for the mechanically interlock system, whilst the ERC is
interlocked with ERS product valves by hydraulic valves in the hydraulic interlock system.
- 41 -
The decision should be made on reliability and if this is contentions, the owner should consider having a
failure modes and effort analysis carried out on both systems.
2.18.7 Quick connect/disconnect coupler, operation , clamp operating time
the reasons for selecting a quick connect/disconnect coupler (QC/DC) are:

ease and speed of operation, particularly on large flanges involving many bolts;

when connections to various flange standards and sizes are required;

safety of operation, particularly where ship movements are a problem; and

when handling hazardous products.
QC/DC are normally hydraulically operated when used on arms with ERS. Where a hydraulic supply is
not available, a QC/DC can be fitted with its own manually operated system.
The minimum clamping time of 5 seconds is required to allow operators sufficient time to keep clear of
the clamps.
In choosing a QC/DC it should be noted that they are relatively heavy items, and because of their
location at the end of the arm they will require approximately seven (7) times their weight in
counterweights, thus significantly increasing the loads to be accommodated by the loading arm and its
foundation.
The choice of an integral valve will depend on the owner’s operating philosophy, but it implies that the
loading arm may be manoeuvred full of product. This will influence the strength and cost of the arm.
QC/DC must never be used as a substitute for an emergency release system, mainly because in certain parts
of the operating envelope they may inhibit clear separations, and do not isolate the manifold.
2.18.8 piggy back vapour return lines may be used with LPG loading arms for example. They are carried
by the parent arm. The ERS is normally integral with the parent ERS. The valves may be ball valves or
spring loaded non-return valves.
2.18.9 control system
a local control panel should be located on the jetty, at one end of the bank of loading arms. All loading arms
in the stowed position should be visible from this position so that each arm can be seen when maneuvred
from the stowed position to over the ship’
s rail. It may be necessary to have pendant control connected to
the control panel to enhance visibility. Pendant control is necessary for final maneouvring and connection
to the ship’
s manifold. It is recommended that this pendant is permanently connected to the manifold end of
the loading arm. Disconnectable pendants suffer damage to the electrical connections and affect operations.
Radio control may be considered as an alternative to pendant control. It offers increased flexibility and
additional safety when disconnecting iced-up loading arms.
2.18.10 vacuum breaker
vacuum breakers (ref. Section 8.4.3. also) are not used on loading arms for liquefied gas duties. Instead ,
- 42 -
nitrogen purge may be used to expedite product drainage.
A vacuum breaker is located at the apex and expedites gravity draining of the outboard arm into the ship’
s
tank following completion of product transfer.
Vacuum breakers are usually NPS 2(DN50) minimum. They control the ingress of air and the pressure
inside the arm and therefore influence gravity drainage.
The vacuum breaker is operated by linkage and pull-wires from the manifold end of the loading arm.
Vacuum breakers often fail to operate properly, causing leakage of product, unsightly mess on the loading
arm and the risk of the spillage reaching the water.
Some owner do not use vacuum breakers and claim that gravity drainage is satisfactory. This is probably
due to the production of gas from the product at its vapour pressure. It should be noted that swivel seals are
designed to accommodate 0.5 bara and therefore lower pressures should not be developed during drainge.
2.18.11 purging system
purging system are used for the following operations:

to expedite product drainage in liquefied gas duties:

for removing air or vapour from a loading arm and providing an inert atmosphere for arms in liquefied
gas duties; and

for removing product, by hot purging, from multi-product loading arms.
The purge connection can be located at a number of points e.g. riser, apex, triple swivel assembly. To avoid
the need for flexible hoses, the connection could be located in the riser. The gas will rise to the apex and
provide a gas cushion which will purge both inboard and outboard arms.
2.18.12 standby electro-hydraulic pump
the selection of a standby electro hydraulic pump will be based on the owner’
s operating philosophy and
personal preferences. If a standby pump is selected then
consideration should be given to automatic
alternative starting. If one pump fails to start, the the other shall start automatically.
2.18.13 manual hydraulic pump
a manual hydraulic pump is recommended to enable operation of the manoeuvring functions in the event
of an electric power failure.
2.18.14 swivel purging
purging of swivel where lubricating grease can be used is not necessary. This normally covers general and
LPG duties. Where the design temperature is not sufficiently low enough to adversely affect or freeze the
grease.
2.18.15 jack
- 43 -
jacks should be used when necessary to limit manifold stresses. It should be noted without measurement
the load taken by the jack is indeterminate and depends on the structural stiffness of the supporting deck
plate and the cantilever length of the ship’
s manifold.
Dependant on the configuration of the triple swivel assembly, the ship’
s manifold and the attitude of the
arm, the loads on the manifold may become upward. In view of this, arms should be designed and balanced
so that the manifold loads are less than the maximum loads specified in the OCIMF publications listed in
section 1.1.
2.18.16 flushing system
flushing system are used for removing the remnant product and cleaning a loading arm. The reasons may
be to remove a difficult product before the next transfer or to remove a product that could contaminate the
next product.
Flushing is normally done by water.
Refrigerated and pressurized liquefied gas arms are never flushed.
2.18.17 stripping system
ref. Figure 7, stripping system are used for draining the inboard arm and pumping the product to the apex
for gravity draining through the outboard arm to the ship’
s tanks.
2.19 reference tables 12,13 and figure 4 and 5
2.19.1 flange connection space
this space allows for a variation of manifold positions for the range of the ships handled.
2.19.2 safety margin
the distance between the 2nd stage alarm and the maximum reach of the arm provides a safety margin in
which the ERS valves close (if they failed to do so at the 1st stage) and the ERC opens before the arm
reaches its maximum position where damage may occur.
2.19.3 pre-alarm
the owner may specify a pre-alarm when it would allow sufficient time to correct the cause of the alarm,
thus preventing activation of the 1st stage alarm.
2.19.4 maximum drift velocity
the owner shall determine the drift velocities for each berth, this will be based on the type and size of
vessels using the jetty, wind, current, etc.
2.20 reference table 23 documentation required with the tender
to enable the owner to evaluate and compare tenders, the vendor shall provide documentation with their
tender as requested by the owner in table 18, taking due cognizance of the following.
2.20.1 utilities consumption list, code ref.: 105
vendor shall provide details of all utilities required for the operation of the proposed loading arm systems,
including electrical power, water, external pneumatic and/or gaseous nitrogen services,
2.20.2 general arrangement and operational envelope drawing, code ref.: 110 and 111
these drawings shall, in addition to general dimensions of the arm(s), include, as a minimum, the
information shown in the following tables of part I, specification:
- 44 -

tables 3,4,6,12,13;

information shown in figures 1 and 3, shall be confirmed;
the following additional information shall be provided:

maximum operating envelope of the loading arm(s), including the counterweight envelope(s) and the
relative relationship between the arms when operating together in specified combinations at both
maximum and minimum tanker manifold spacing;

clearance as per part I, section 4.17; and

attitude of the arm(s) for maintenance of swivels, stowage and hydrostatic testing operations.
2.20.3 design data sheets, code ref.: 117
these shall include completed design data sheets as detailed in part I, specification. Vendor shall ensure
that product line pressure drops are calculated and graphically shown for a range of flows, for example,
50% to 150% of the specified flow given in part I , table 2.
In addition to dimensional data and tolerances, jetty interface data shall include the location, magnitude
direction of foundation loads together with loading or weights of the QC/DC and ERS system.
2.20.4 test procedures, code ref.: 129
provide an outline of the test procedures specified in part I, section 12.0.
2.20.5 operational, code ref.: 170-172
provide a provisional list of recommended spares for use during commissioning and the initial 12 months
of operation for the proposed system. These shall be sufficient to ensure installation and commissioning of
the equipment is completed without delay. Details should also be provided of any hazardous substances or
material which would be included in the proposed system.
2.20.6 in addition to the documents listed in table 22, the vendor shall provide the following information to
enable a complete technical understanding of the offer:
a.
a list detailing all technical exceptions to the specifications, standards or other requirements as
specified by the owner.
It is important that the technical basis of the tender is clearly defined.
b. a general description of the loading arms and equipment offered.
Vendors are recommended to include equipment literature or other descriptive technical data in
support of their tender or bid.
c.
a technical description of the control and instrumentation system, clearly demonstrating that the
system complies with hazardous area and equipment protection classifications.
d. Outline proposals for:
Providing assistance to the owner for the installation and commissioning of the equipment
Operational maintenance support services
2.21 reference table 19, documentation required after contract award
following contract award vendor shall provide all documentation requested by the owner in table
19.
2.21.1 vendor master document list , code ref.: 201
- 45 -
vendor shall prepare and provide a complete master document list which shall include all
deliverable documentation for the contract. This list shall generally from part of the contract and be
subject to contract change procedures.
2.21.2 mechanical documentation
mechanical documentation includes mechanical, piping and structural related documents.
a.
document code ref.: 210
general arrangement and assembly drawings shall show all arm components with reference
numbers corresponding to item numbers on the appropriate bill of material.
b. document code ref.: 212.
Drawings of fabricated structural and product retaining components or sections shall show
component and weld reference numbers corresponding to items on a bill of material and weld
numbers on a weld summary list.
c.
document code ref.: 212.
Design calculation book, mechanical, shall include all supporting data, drawings and diagrams
used in the calculations and analyses required in part I, technical specification.
d. document code ref: 220 and 221.
Interface drawings and jetty loading data shall clearly state the location, magnitude and
direction of loading arm foundation loads, and loading/ weight which the tanker manifold
coupler and ERC system may impart to the tanker manifold.
e.
document code ref.: 224.
The weld summary list shall include metallic overlays applied by welding techniques, post
weld heat treatment specifications (PWHT) and Non Destructive Examination(NDE) procedure
numbers.
f.
document code ref.: 235
packing and preservation procedures shall detail how the equipment shall be packed for
transport to the owner’s specified point of delivery. Vendor shall give details of the preservation
system(s), to be used to ensure that the equipment does not deteriorate during storage prior to
installation, shall be given, together with a list of special supports which must be removed prior
to operation. Where a spare loading arm is ordered the vendor shall provide long term storage
instructions.
2.21.3 electrical, hydraulic control and instrumentation
a. document code ref.: 250.
Diagrams shall clearly show how instrumentation between various tagged, or otherwise
identifiable subsystem, are made. Cable assemblies shall be identified.
b. document code ref.: 252
diagrams shall clearly show where cable assemblies/bundles are routed between identifiable
sub-systems.
- 46 -
c.
document code ref.: 251,253 and 254
components shown on electrical circuit diagrams shall be identifiable to the electrical
equipment list, code ref.: 254, and, where applicable, clearly cross reference to items on the
relevant hydraulic diagrams and lists with respect to solenoid numbering, instruments or other
inter-related components.
d. document code ref.: 257.
Components shown on hydraulic circuit diagrams shall be identifiable to the electrical
equipment list, code ref.: 259, and, where applicable, clearly cross reference to items on the
relevant electrical diagrams and lists with respect to solenoid numbering, instruments or other
inter-related components.
e.
document code ref.: 258.
To aid interpretation, logic diagrams shall, where applicable, give references to relevant
electrical, instrument and hydraulic components.
f.
document code ref.: 262
interface data shall fully define all electrical, instrumentation( including signals), hydraulic
and other controls interfaces between the marine terminal and the plant
g. document, code ref.: 263.
Design calculations shall include, but not be limited to, and specifications for all components
in the electro-hydraulic control system, hydraulic pressure loss calculations and calculations
demonstrating the design interface between the hydraulic loads.
2.21.4
manufacturing documentation, code ref.:300 series
the vendor shall prepare and deliver manufacturing documentation as required by the owner in
the form of a manufacturing data book or dossier. The data book shall have an index, such that all
data may be easily located.
Certificates, reports and records incorporated into the data book shall be cross-references to the
unique identification numbers or makings of the item(s) to which they apply.
Vendors quality assurance systems shall operate in accordance with the ISO 9000 series of
standards. The owner should require the vendor to provide material and component certification
in accordance with mandatory, design code and certification authority requirements. In the
absence of such requirements, certificates and traceability should be provided for all structural,
pressure retaining and safety related components.
2.21.5
user documentation, code ref.: 400 series
a.
installation procedures, code ref.: 403.
Detailed instructions for on-site assembly, installation and balancing.
b. plant/terminal interface data, code ref.:404.
Vendor shall provide interface data, descriptions and diagrams as necessary to enable
operations staff to fully understand the electrical, instrumentation, signals and hardware
interfaces between the plant and the terminal.
- 47 -
c.
commissioning procedures, code ref.: 405.
These shall include a series of tests which shall prove to the owner that the system and all
safety components, including ERC/ERS equipment, operated in accordance with the
technical requirements. Loading arms shall be tested and together in specified
combinations.
d. operating and maintenance procedure, code ref.: 405 and 406.
Unless specified otherwise by the owner, operating and maintenance procedures shall be
produced in the English language, and shall include, but not be limited to, the following:

general safety procedures to be observed during operation of the loading arm
systems;

preparations and checks to be made on the jetty before the tanker berths and
onboard the tanker before connection of the loading arms;

loading arm reference and composite envelopes with alarm positions;

loading arm connection, manoeuvring and disconnection procedures;

loading arm cool down procedures for use with low temperature and cryogenic
products;

control of the loading arms system during product transfer operations;

emergency disconnection procedures;

vessel and environmental operating and design limits;

manifold connection criteria;

simultaneous loading criteria;

adjustment procedures;

settings for pressure relief valves;

as built drawings; and

schedules and instructions for routine maintenance tasks and minor replacement
and repairs which can be performed by operator.
e.
spares lists, code ref.: 408 and 409.
Spare holdings shall be sufficient to enable installation and commissioning procedures to
be completed without foreseeable delay, and for subsequent normal operation for the first
12 months following entry into service.
Operational spares shall be recommended for subsequent normal operation.
f.
product hazard data sheets, code ref.:411.
Where required by relevant statutory codes and standards and/or as specified by the
owner, vendor shall provide hazard data sheets for all material and substances
incorporated into, or specified for use with, the equipment by the vendor.
- 48 -
Table 1- Arm Design Details
Berth
No.
Arm
No.
Arm
Dia(mm)
Design
Temperature
Min/Max
Arm Operation
Connection Combinations
Single
Table 2- Product and Operational Data
Berth
No.
Arm
No.
Temp ℃
min
max
Viscosity cSt
Temp
min
max
Vapour
Pressure bar a
min
max
- 49 -
Atmos.Boiling
Temp
℃
Operating
Pressure Bar g
min
max
Table 3- Ship Detail Ref. Figure 1
a
b
c
d
e
Ship Type
Tanker size
DWT
Gas carrier size m3
Freeboard (or draught)
Laden
m
Unladen
m
Rail height
m
Manifold height above water line
Minimum
m
Maximum
m
Manifold setback
Minimum
m
Maximum
m
Manifold centers
Minimum
m
Maximum
m
Table 4- Ship Motions Ref.2
Ship type
Tanker size
DWT
Gas carrier size
m3
Motions ( at manifold)
Surge fore (Note 1)
Surge aft (Note 1)
Sway (Note 1)
Heave, maximum
+m
-m
Roll, maximum
+ deg
- deg
Pitch, maximum
+deg
-deg
Yaw, maximum
+deg
-deg
Note1- surge and sway occur simultaneously
- 50 -
Table 5- manifold details
Product
Dia mm/ASME rating
Wall
Thickness/ material
Product
Dia mm/ASME rating
Wall
Thickness/ material
Product
Dia mm/ASME rating
Wall
Thickness/ material
Product
Dia mm/ASME rating
Wall
Thickness/ material
Product
Dia mm/ASME rating
Wall
Thickness/ material
Product
Dia mm/ASME rating
Wall
Thickness/ material
Product
Dia mm/ASME rating
Wall
Thickness/ material
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
∕
- 51 -
Table 6- berth details, general (Ref. Fig3)
a
b
c
d
e
f
g
h
i
j
k
Underside (u/s) base plate above chart datum (m)
Jetty face to berthing line, minimum/maximum
(m)
Jetty face to riser centre
(m)
Riser centres
(m)
Available jetty length
(m)
Available jetty width
(m)
Height above chart datum of obstructions within area of (m)
maximum
Riser flange above U/S Base plate Type 1
(m)
Riser flange below U/S Base plate Type 2
(m)
Riser flange below U/S Base plate Type 3
(m)
Riser centre to riser flange face
(m)
Table 7- Berth Details, Electrical Supply
Electrical supply
Electric motors
Logic/trip system
Electrical instruments
Electro-hydraulic components
volts
Hz
Ac
Dc
Table 8- Berth Details, Electrical Earthing
Electricity supply earthing system
Solidly earthed
High resistance earthed
Isolated earth
required
- 52 -
No phases/No wires
Table 9- berth details, safety
Hazardous area classification
table 10- environmental data
Design wind velocities
(basic 3 second gust wind speed)
 stored
 manoeuvring/connected
 hydrostatic test/maintenance
m/s
m/s
m/s
Earthquake load(EL) to be considered while arm in
stored and connected attitude (e.g.. UBC code)vol.2,
Division iii earthquake design:
 seismic zone factor(z)
 site coefficient for soil characteristics(s)
 importance factor (i)
ambient temperature - minimum
Ambient temperature
- maximum
Solar radiation temperature
Thickness of ice build-up to be included in self weight
(DL) and effect on windload (WL)(4.2.5)
 stored attitude
 manoeuvring/connected attitude
water elevation from chart datum
- maximum water level (note1)
- minimu water level (note 2)
℃
℃
℃
m/m
m/m
m
m
Notes:
1. includes tide and positive surge
2. include tide and negative surge. State + or –for above or below chart datum
- 53 -
*Table 11—Specific Requirements
Berth No. / Arm No.
Operation
Two speed manoeuvring
Emergency Release System (ERS)
ERS Manufacturer & Type
ERS product valve closure time
ERC opening time
ERS product valves
·Type
·Diameter
·Bore
Mechanical Interlock
Hydraulic Interlock
Quick Connect/Disconnect Coupler QC/DC
QC/DC Operation
QC/DC Valve
·Operation
·Type
·Diameter
·Bore
Clamp Operating time minimum/maximum
Piggy back vapour return
Flange rating/diameter (nominal bore)
Drives
· slewing
· inboard arm
· outboard arm
Control System
·central (Ref. Table 14)
· portable (Ref. Table 15)
Vacuum breaker
Purging System
· Riser
· Apex
· Manifold End
Ladders and platforms
Foundation bolts
· Specified by vendor
· Supplied by vendor
Baseplate template supplied by vendor
Standby Electro-Hydraulic Pump
Manual Hydraulic Pump
Swivel Purging
Jack
Hydraulic/Manual
Yes/No
Yes/No
s
s
mm
Full/Reduced
Yes/No
Yes/No
Yes/No
Hydraulic/Manual
Yes/No
Hydraulic/Manual
mm
s
mm
Full/Reduced
10-15
Yes/No
Class
Hydraulic/Electrohydraulic/Manual
Hydraulic/Electrohydraulic/Manual
Hydraulic/Electrohydraulic/Manual
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
30
- 54 -
*Table 11 - Specific Requirements (Contd/...)
Berth No. / Arm No.
Lubrication
· Grease specification
· cartridge
· local
· central
· other
Maintenance Dummy Manifold
Uninterrupted Power Supply by batteries
Flushing Connection
· size
· flange
Stripping System
Design Life
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Years
*Table 12 - Envelope Details (Arms with ERS) Ref. Fig 4
Arm No.
a
b
C
d
e
f
g
h
m
n
Pre-alarm required
Pre-alarm luffing
1st stage alarm (luffing)
2nd stage alarm (luffing)
Maximum reach (luffing)
Bottom limit operating envelope to chart datum
Top limit operating envelope to chart datum
Maximum slew right surge.) See Table 4
Maximum slew left surge.) See Table 4
2nd stage alarm slew right
2nd stage alarm slew left
1st stage alarm slew right
1st stage alarm slew left
Pre-alarm slew right
Pre-alarm slew left
Maximum Drift Velocity (Surge direction)
Maximum Drift velocity (Sway direction)
Yes/No
(m)
(m)
(m)
(m)
(m)
(m)
(m)
(m)
(m)
(m)
(m)
(m)
(m/s)
(m/s)
- 55 -
*Table 13 - Envelope Details (Arms without ERS) Ref. Fig 5
Arm No.
a
b
c
d
e
f
g
h
Alarm (luffing)
Maximum reach (luffing)
Bottom limit operating envelope to chart datum
Top limit operating envelope to charl datum
Maximum slew right, (surge.) See Table 4
Maximum slew left, (surge.) See Table 4
Alarm slew right
Alarm slew left
Maximum Drift velocity (Surge direction)
Maximum Drift velocity (Sway direction)
(m)
(m)
(m)
(m)
(m)
(m)
(m/s)
(m/s)
Table 14- Central Control Requirements (Ref. Section 10.1 .1a)
a
b
c
d
e
f
g
h
i
j
k
Power on/off (key locked)
Hydraulic pump(s) on/off
Arm selector switch
Manoeuvring controls
Central control / Pendant control switch
Two speed manoeuvring selector switch
1st stage alarm push button, fitted under a red flap-over cover
2nd stage alarm push button, fitted under a red flap-over cover
Shutdown reset button
Alarm lamps
ERS valve closure switches
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Yes/No
Table 15 - Pendant Control Requirement (Ref. Section 10.1.1 b)
a
b
C
Loading arm manoeuvring controls
Two speed manoeuvring selction
ERS valve closure switches
Yes/No
Yes/No
Yes/No
- 56 -
Table 16 - Location of Pendant Control
a
b
c
Jetty (One/bank of arms)
Triple Swivel Assembly (One/arm)
Radio control
Yes/No
Yes/No
Yes/No
Table 17 - Design Load Cases
Case
No
1
2
3
4
5
6
7
8
9
10
Mode
Stored
Stored
Manoeuvring
Connected
Connected
Connected
Emergency Release
Emergency Release
Maintenance
Hydrostatic Test
DL
EL
FL
= Dead Load
= Earthquake Load
= Fluid Load
PL
PLT
TL
WLs
WLo
WLM
=
=
=
=
=
=
Loading Combination
DL + WLs
DL + EL
DL + WLo
DL + WLo
DL + FL + PL + WLo
DL + FL + PL + WLo + TL
DL + WLo
DL + FL + PL + WLo
DL +WLM
DL + FL + PLT+WLo
Design Pressure Load
Test Pressure Load
Thermal Load
Wind Load in Stored Mode
Wind Load in Operating Mode
Wind Load in Maintenance Mode
- 57 -
Allowable
Stress (s)
KxSd
1.2 Sd
1.2 Sd
0.9 Sd
0.8 Sd
0.8 Sd
1.5 Sd
1.1 Sd
1.1 Sd
0.9 Sd
1.3 Sd
* Table 18 -Tender Documentation
DOCUMENTATION I REQUIRED WITH THE TENDER
DOCUMENTATION REQUIREMENTS
Doc Description
Code
101 Vendor Document List
102 Project Schedule
103 Quality Assurance Manual
104 Quality Plan
105 Utilities Consumption List
106 Sub - Suppliers List
107 Sub - Contractor List
108 Proof Test Certificates
MECHANICAL / STRUCTURAL
110 General Arrangement Drawings
111
Drawings Showing Operational Envelopes
112 Component Drawings
113 ERC/ERS Arrangement Drawings
114 QC/DC Arrangement Drawings
115 Cross Section Drawings
116 Material List
117 Design Data Sheets~
118 Interface Drawings
119 Jetty Interface Loading Data
120 Weight and C of G Data
121 Weld Summary List
122 Welding procedures / Specification
123 Weld Procedure Qualifications
124 NDE Procedures
125 NDE Operator Qualifications
126 Heat Treatment Procedures
127 Painting and Coating Specification
128 Procedure for Arm Balancing
129 Factory Acceptance Test Procedure
130 Packing and Preservation Procedure
Required
√
- 58 -
Page 1 of 2
Document Number:
Revision Number :
Purchase Order No :
No of Notes
Copies
*Table 18-Tender Documentation(contd/…)
DOCUMENTATION REQUIRED WITH THE TENDER
DOCUMENTATION REQUIREMENTS
Doc Description
Code
ELECTRICAL and HYDRAULIC CONTROL
and INSTRUMENTATION
150 Electrical Interconnection Diagram
151 Electrical Circuit Diagrams (Typical)
152 Electrical Equipment List
153 Data Sheets for Overload Protection Devices
154 Instrument Data Sheets
155 Control Logic Diagrams
156 Hydraulic Circuit Diagram (Typical)
157 Hydraulic Equipment List
158 Data Sheets for Hydraulic Components
OPERATIONAL
170 List of Operational Spares
171 List of Consumables
172 Product Hazard Data Sheets
Page 2 of 2
Document Number :
Revision Number :
Purchase Order No :
Required No of Notes
Copies
√
- 59 -
*Table 19 - Contract Documentation
DOCUMENTATION REQUIRED AFTER CONTRACT AWARD
Page 1 of 4
Document Number :
Revision Number :
ENGINEERING AND DESIGN DOCUMENTATION
Purchase Order No :
Doc Description
required No of Document
Due Include in
Code
Copies
Type
Date Data Book
√
GENERAL
201 Vendor master Document List
202 Final Project Schedule
203 Quality Assurance Manual
204 Quality Plan
205 Project Specific Quality Procedures
206 Utilities Consumption List
207 Sub - Supplier List
208 Sub - Contractor List
209 Proof Test Certificates
MECHANICAL / STRUCTURAL
210 General Arrangement Drawing
211 Drawings Showing Operational Envelopes
212 Component Drawings
213 ERC / ERS Arrangement Drawings
214 QC / DC Arrangement Drawings
215 Cross Section drawings
216 Material List
217 Design Data Sheets
218 Stress Report
219 FMEA report for Emergency Release System
220 Third Party Design Certification
221 Interface Drawings
222 Jetty Interface Loading data
223 Weight and C of G Data
224 Weld Summary List
225 Welding Procedures / Specification
226 Weld Procedure Qualifications
227 NDE Procedures
228 NDE Operator Qualifications
229 Heat Treatment procedures
230 Painting and Coating Specification
231 Procedure for Arm Balancing
232 Factory Acceptance Test procedure
233 Details of Test and Measuring Equipment
234 Test Acceptance Criteria
235 Packing and Preservation Specification
1. Failure Mode and Effects Analysis
2. Non Destructive Examination
- 60 -
*Table 19 - Contract Documentation (Contd/…)
DOCUMENTATION REQUIRED AFTER CONTRACT AWARD
Page 2 of 4
Document Number :
Revision Number :
ENGINEERING AND DESIGN DOCUMENTATION
Purchase Order No :
Doc
Description
required No of Document
Due
Code
Copies
Type
Date
√
ELECTRICAL and HYDRAULIC CONTROL
and INSTRUMENTATION
250 Electrical Interconnection Diagram
251 Electrical Circuit Diagrams
252 Electrical and Cable Routeing System
253 Cable Schedules
254 Electrical Equipment List
255 Data Sheets for Overhead Protection Devices
256 Instrument Data Sheets
257 Hydraulic Circuit Diagram
258 Control Logic Diagrams
259 Hydraulic Equipment List
260 Schedule,Pressure Control Valves
261 Data Sheets for Hydraulic Components
262 Interface Data Sheets
263 Design Calculation Book,Control System
- 61 -
Include in
Data Book
*Table 19 - Contract Documentation (Contd/…)
DOCUMENTATION REQUIRED AFTER CONTRACT AWARD
MANUFACTURING DOCUMENTATION
Doc
Description
Required
Code
301
Materials Test Certification
302 NDE Reports
303 MPI Reports
304 Dye Penetrant Examination Reports
305 Radiographs
306 Ultrasonic Examination Reports
307 Heat Treatment Records
308 Heat Treatment Certificates
309 Pressure Test Certificates
310
Fire Test Certificates
311
Third Party Certificates
312
Factory Acceptance Test Reports or Certs
313
Performance Test Certificates
314
Proof Load Certificates
315
Weight and/or Weighing Certificates
316
Painting / Coating records or Certificates
317
Concession and/or Repair Reports
318
Packing Lists
319
Release Notes
320 Punch Lists of Outstanding Items
321
Punch List of Outstanding Actions
2. Non Destructive Examination
3. Magnetic Particle Inspection
- 62 -
No of
Copies
Page 3 of 4
Document Number :
Revision Number :
Purchase Order No :
Document
Due
Type
Date
Include in
Data Book
*Table 19 - Contract Documentation (Contd/…)
DOCUMENTATION REQUIRED AFTER CONTRACT AWARD
Page 4 of 4
Document Number :
Revision Number :
ENGINEERING AND DESIGN DOCUMENTATION
Purchase Order No :
Doc
Description
required No of Document
Due
Code
Copies
Type
Date
√
401 Onsite Preservation procedures
402 Unpacking/Lifting Instructions
403 Installation procedures
404 Plant/Terminal Interface Data
405 Commissioning Procedures
406 Operating Procedures
407 Maintenance Procedures
408 Lubrication Schedules
409 List of Installation and Commissioning Spares
410 List of Operating Spares
411 List of Consumables
412 Product Hazard Data Sheets
- 63 -
Include in
Data Book
- 64 -
- 65 -
- 66 -
- 67 -
- 68 -
- 69 -
- 70 -
- 71 -
- 72 -
- 73 -
-1-