ENGINEERING SPECIFICATION
FOR
FIREPROOFING
HTC-CA-109E
1
2022.05.02
REVISED AS PER MARK
0
2015.08.28
ORIGINAL ISSUE
REV
DATE
DESCRIPTION
S.H.KWON
H.J.LEE
J.S.MOON
D.W.KANG
S.M.YANG
G.W.YOON
PREPARED
CHECKED
K.W.JEON
H.C.KIM
APPROVED
HANWHA TOTAL ENERGIES PETROCHEMICAL CO.,Ltd.
DAESAN, KOREA
ISSUED
ENGINEERING SPECIFICATIONS
SPEC. NO
FOR
HTC-CA-109E
FIREPROOFING
2022.05.02
PAGE
1 of 12
Revision indication
CONTENTS
PAGE
1.
General
1.1 Scope
----------------------------------------------------------------------------------------- 3
1.2 Codes and Standards
----------------------------------------------------------------------- 3
1.3 Related Specification------------------------------------------------------------------------------ 3
1.4 Units
2.
----------------------------------------------------------------------------------------- 3
Definitions
2.1 Combustible liquids
----------------------------------------------------------------------------- 3
2.2 Flammable liquids
------------------------------------------------------------------------------- 4
2.3 Emergency valves
-------------------------------------------------------------------------------- 4
2.4 Intumescent fireproofing mastics
--------------------------------------------------------------- 4
2.5 Subliming fireproofing materials ----------------------------------------------------------------- 4
2.6 Fire hazardous equipment ----------------------------------------------------------------------- 4
2.7 Fire hazardous area ------------------------------------------------------------------------------- 4
2.8 Fire resistivity rating ----------------------------------------------------------------------------- 4
3.
Fireproofing requirements
3.1 General
----------------------------------------------------------------------------------------- 5
3.2 Pipe rack
----------------------------------------------------------------------------------------- 6
3.3 Equipment support structure
------------------------------------------------------------------- 6
3.4 Vessel skirts, pier and column
----------------------------------------------------------------- 6
3.5 Combines structure for pipes and equipment --------------------------------------------------- 7
3.6 Cable tray ---------------------------------------------------------------------------------------- 7
3.7 Fired heater -------------------------------------------------------------------------------------- 7
3.8 Emergency valve
4.
--------------------------------------------------------------------------------- 7
Materials
4.1 General
------------------------------------------------------------------------------------------
4.2 Normal weight concrete
4.3 Light weight concrete
8
------------------------------------------------------------------------ 8
--------------------------------------------------------------------------- 8
4.4 Other fireproofing material
--------------------------------------------------------------------- 8
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5.
Appendix --------------------------------------------------------------------------------------------- 8
5.1 Drawing of fireproofing requirement ----------------------------------------------------------
9
5.2 Standard drawing (Fireproofing)
11
---------------------------------------------------------------
ADDENDUM(REVISION HISTORY) ------------------------------------------------------------------ 12
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1.
General
1.1
Scope
1.1.1 This specification covers the requirements for the fireproofing of the chemical plant and
associated facilities.
1.1.2 This Specification shall not be applied to other classes of property such as offices, warehouse,
workshop, community facilities and offshore facilities, etc. and the requirements for such
facilities may be determined respectively.
1.1.3 This Specification is largely based on the concepts in ‘API RP 2218 Fireproofing Practices in
Petroleum and Petrochemical Plants’, and it reviews relevant fireproofing terminology. It gives
guidance on how to determine what structures and equipment need to be fireproofed. Types
of fire resistant materials and methods of application are covered, as are various fireproofing
standards.
1.2
Codes and Standards
1.2.1 The following codes and standards shall be applied.
- API RP 2218 (Fireproofing practices in petroleum & petrochemical processing plants)
- IRI Information (Fireproofing for oil and chemical properties)
- KS F 2257-1,6,7
- UL 1709 (Rapid rise fire test of protection materials for structural steel)
1.3
Related specification
1.3.1 This specification shall be used in conjunction with the following Specifications.
- HTC-CA-003E DESIGN CRITERIA FOR STEEL STRUCTURE
- HTC-CA-101E DESIGN LOAD EXTERNAL FORCES
1.4
Units
Unless otherwise specified, SI units shall be supplied as the measurement system for drawings and
Documents to be provided.
2.
Definitions
2.1
Combustible liquids
Based on ‘NFPA 321 standard on basic classification of flammable and combustible liquids’,
combustible liquids are liquids with flashpoints at or above 388C (1008F), and may be subdivided as
follows:
- Class II liquids have flashpoints at or above 38°C (100°F) and below 60°C (140°F)
- Class IIIA liquids have flashpoints at or above 60°C (140°F) and below 93°C (200°F)
- Class IIIB liquids have flashpoints at or above 93°C (200°F)
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Many combustible chemicals that are solids at 38°C (100°F) or above are classified as solids. When
heated, the solid becomes liquid and gives off flammable vapours; flashpoints can then be
determined. In their liquid state, these solids should be treated as liquids with similar flashpoints.
2.2
Flammable liquids
Liquids having a closed-cup flashpoint below 38°C (100°F), or which are handled at temperatures
above their flashpoint
2.3
Emergency valves
Emergency valves are motor- or air-operated block or control valves which meet both the following
conditions:
- The valve has function to shut down unit safely and to depressurize equipment and isolate
fuel feeding a fire emergency isolation valve includes suction valve of pump from large
towers, accumulators, or feed surge drums.
- The valves are located within a fire hazardous area.
2.4
Intumescent fireproofing mastics.
Intumescent fireproofing mastics are fireproofing materials that expand to several times their own
volume when exposed to heat, and form a protective insulating ash or char at the barrier that faces
the fire.
2.5
Subliming fireproofing materials
Subliming fireproofing materials are fireproofing materials that change directly from a solid to a
gaseous state when they absorb large amounts of heat.
2.6
Fire hazardous equipment
2.6.1 Vessels, heat exchangers (including air cooled exchangers), and other equipment containing
flammable or combustible liquids over 315°C (600°F) or their auto-ignition temperature.
2.6.2 Pumps with a rated capacity over 45m3/hr that handle liquids above or within 8°C (15°F) of
their flash point temperatures.
2.6.3 Fired heaters that process liquid or mixed phase hydrocarbons, under the following conditions:
(1) Operation at temperatures and flow rates that are capable of causing coking within the
tubes.
(2) Operation at pressures and flow rates that are high enough to cause large spills before the
heater can be isolated.
(3) Charging of potentially corrosive fluids.
2.6.4 Piping within battery limits handling flammable liquids or gases in mixtures.
2.7
Fire hazardous area
Fire hazardous area is the three-dimensional space into which fire-hazardous equipment can release
flammable or combustible materials that are capable of burning long enough and with enough
intensity to cause substantial property damage. The space within 15m measured from the edge of
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the equipment horizontally of any fire hazardous area specified in this standard, and extending from
grade to a height of 9m, which shall be described in the Fire exposed envelope drawings.
2.8
Fire resistivity rating
Unless otherwise specified, fire resistivity rating for any steel structure and steel support shall be
minimum 2 hours rating in accordance with UL-1709
3.
Fireproofing requirements
3.1
General
3.1.1 Steel members that support platform, stairway shall be not fireproofed.
3.1.2 Bracing members used only for wind and seismic loading shall be not fireproofed.
3.1.3 The top surface of fireproofed member shall be not fireproofed.
3.1.4 The base plate and anchor bolt of fireproofed member resting on foundations shall be
fireproofed unless otherwise noted on drawings.
3.1.5 Surface preparation
Steel surface that will be fireproofed with concrete shall be dry, free of oil, grease, dirt, rust,
loose scale.
3.1.6 Weather proofing.
(1) Termination of fireproofing on steel shall be sloped to shed water and sealed with mastic
to prevent moisture from entering between fireproofing material and steel surface.
(2) Protection from heavy rain, frost and extreme weather conditions shall be consider during
the application of fireproofing.
(3) The fireproofed surface of steel structure with light weight concrete, Fendolite of
equivalent shall be coated with waterproofing materials.
3.1.7 Mesh reinforcement
(1) Mesh reinforcement shall be arranged on about one half the fireproofing thickness.
(2) Mesh reinforcement shall be wrapped around the steel members section and kept in place
firmly by the clips. Overlaps shall be 50mm or more and shall be wired at approximately
150mm centres. All overlaps shall be arranged so that no more than three layers of mesh
are present at any one point.
3.1.7 Exposed concrete
(1) Fireproofing concrete shall not be finished and left as exposed concrete. The exposed
concrete surface shall be reasonably smooth and free form excessive form marks and
honeycomb.
(2) Edges of concrete surface shall have a chamfer of approximately 25mm.
3.2
Pipe rack
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3.2.1 Pipe rack columns supporting hydrocarbon piping in fire hazardous area shall be fireproofed
from the column base to the first cross beams, including the first cross beams.
3.2.2 The hydrocarbon piping supports (include small lateral pipe racks, independent stanchions,
individual T columns.) placed outside the main pipe rack with a diameter greater than 6 in., or
important piping such as relief lines, blow-down lines, or pump suction lines from
accumulators or towers in fire hazardous area shall be fireproofed.
3.2.3 The hydrocarbon piping which is supported from spring hangers, U type supports or rods in
fire hazardous area shall be protected by a fireproofed bracket beam located beneath the pipe.
Sufficient clearance between the bracket and the pipe shall be provided to permit free
movement of the spring hangers.
3.2.4 Longitudinal members & any bracing members shall not be fireproofed. But the first
longitudinal beams which support pipe line to directly connect to the equipment (Pump,
Tower, Exchanger etc.) shall be fireproofed.
3.3
Equipment Support Structure
3.3.1 When supporting fire hazardous equipment, the columns shall be fire- proofed from their
bases to the equipment support level. The beams transmitting the equipment load to the
columns shall be fireproofed.
3.3.2 Vertical bracing members which contribute to the support of equipment loads shall be
fireproofed. Bracing used only for wind and earthquake loading shall not be fireproofed.
3.3.3 When structures are located in a fire hazardous area and supported non-fire hazardous
equipment, fireproofing shall be considered for the vertical and horizontal steel members from
grade up to and including the level that is nearest to a 9 m elevation above grade.
3.3.4 Platforms, stairways and their support are not fireproofed.
3.4
Vessel skirts, pier and column
3.4.1 The exterior surfaces of skirts, regardless of vessel size, that support towers and vertical vessels
shall be fireproofed.
3.4.2 Vessels with a diameter of more than 1500mm or with flanges and valves in side of skirt shall
be fireproofed to interior surfaces of skirt.
3.4.3 Saddles supporting horizontal vessels and exchangers, measuring over 300mm in height and
their lowest point, shall be fireproofed.
3.4.4 On supports of vessels and exchangers having slots in their base plates for thermal expansion,
fireproofing shall not interfere with the sliding motion of these supports.
3.5
Combines Structure for Pipes and Equipment
3.5.1 For steel structure supporting pipes and equipment such as air-fin cooler, which equipment is
considered as fire hazardous equipment or located in fire hazardous area, the columns shall
be fireproofed from their bases up to point of support of tube bundle, the beams transmitting
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the equipment load to the columns, and cross beams supporting pipes shall be also
fireproofed.
3.5.2 The first longitudinal beams shall be fireproofed. The longitudinal beams above first level
supporting the equipment and pipe line to connect directly to the equipment (Pump, Tower,
Exchanger etc.) shall be also fireproofed.
3.5.3 Vertical bracing members which contribute to the support of equipment loads shall be
fireproofed. Bracing used only for wind and earthquake loading shall not be fireproofed.
3.6
Cable tray
Main structural members and bracing supporting fire heaters shall be fireproofed from the
foundation to the floor of the heater.
3.7
Fired heater
The cable tray in fire hazardous area shall be fireproofed using of Intumescent, subliming or ablative
coating (thermo-leg, etc.) providing protection of at least 15 ~ 30 minutes in accordance with
UL1709.
3.8
Emergency valve
3.8.1 Fireproofing for valve actuator in fire hazardous area, instrumentation and power systems shall
provide protection of at least 15-30 minutes when subjected to a test furnace environment in
accordance with UL1709, unless they are designed to fail-safe during a fire exposure.
3.8.2 Actuators fireproofing shall be removable type or coating type considering maintenance and
interference of other structure, and also should ensure that position indicator of valves remain
visible after fireproofing.
3.8.3 Where main cable runs are buried, individual cable risers to motors and switches, etc, which
are part of a critical emergency shutdown and isolation system (and if the system is not failsafe), should withstand exposure to hydrocarbon fire for at least 15-30 minutes or be external
fireproofed.
3.8.4 Pneumatic and hydraulic instrument lines which are stainless steel tubing (Type 304, 316, 321)
do not required fireproofing..
4.
Materials
4.1
General
When fireproofing materials are selected, care should be taken to obtain the desired degree of
protection during the system's service life. The materials to be used shall have sufficient quality to
meet functions and safety of constructions.
4.2
Normal weight concrete
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4.2.1 In principle, materials during mixing concrete and application shall not receive direct sunshine.
In an unavoidable case, the constructor may change this item after consulting with Purchaser
or its representative.
4.2.2 Application at the ambient temperature below 4℃ should be avoided.
4.2.3 Mixed concrete shall he used within one hour.
4.2.4 Concrete shall fully penetrate all form work corners and angles of metal surfaces. And the
outer surfaces of concrete shall be smooth and without honeycomb.
4.2.5 Normal weight (or dense) concrete used for fireproofing shall be mixed with Portland cement.
4.2.6 Concrete for fireproofing shall have minimum compressive strength of 21Mpa at 28 days.
4.2.7 Wire mesh reinforcement (02-3mm, 50x50mm) shall be provided with the member being
fireproofed.
4.3
Light weight concrete
4.3.1 Lightweight concretes use very light aggregates such as vermiculite or perlite (instead of
gravel) with cements that are resistant to high temperatures.
4.3.2 Light weight concretes are usually sprayed on, but may be troweled or formed in place using
reinforcing mesh.
4.3.3 Fireproofing can be used at thinner coating thickness for equivalent fire exposure time ratings.
4.4
Other fireproofing material
4.4.1 Other suitable fireproofing materials (Fendolite, Taikalite, etc.) such as plastered, sprayed and
dried material supplied by each manufacturer shall be designed in accordance with
manufacturer’s specification. Material shall have certification of two-hour fire resistance rating
according to UL 1709.
4.4.2 Materials for electric and instrument equipment such as cable actuator, trav. etc, shall have
certification of at least 15~30 minutes in accordance with UL1709.
5.
Appendix
5.1.1 Drawing of fireproofing requirement
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Figure.1 Drawing of fireproofing requirement (Pipe rack & support)
Consider fireproofing at this
intermediate support level,
If there are pipes > NPS 6
on the first level
(refer API RP 2208)
9m
Large pumps
Pipe Rack Without
Pipe Rack With
Pumps Installed Below
Pumps Installed Below
Fireproofing knee
bracing support
vertical loads
Fin fan air-cooler
Fin fan air-cooler
No fireproofing on
stringer beams that
don’t support
vertical loads
Fireproofing on
stringer beams that
support vertical loads
Pipe Rack Supporting Fin Air-Cooler
LEGEND
Fireproofing knee
bracing
Transfer Line
Transfer Line
Support
With Hanger Support
Fireproofing
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Figure.2 Drawing of fireproofing requirement (Equipment structure)
Fire hazardous
equipment
Accumulator
Condensers
Reactor
Fire hazardous
equipment
Fireproof reactor skirt
Brackets or lugs
Heat
exchangers
Fireproof regardless of
elevation above grade
Protect all levels below fire
hazardous equipment
Pipe
No fireproofing
on wind bracing
Fireproof knee or
diagonal bracing
support vertical load
Structure Supporting
Fire Hazardous Equipment
Condensers
Fire
hazardous
area
9m
Non-fire hazardous
equipment
Non-fire hazardous
equipment
Fire hazardous
equipment
Non-fire hazardous
equipment
Solid concrete or
steel plate floor on
which liquids can
accumulate
No fireproofing
on wind bracing
9m
Structure Supporting
Structure Supporting
Fire Hazardous and
Non-Fire Hazardous
Non-Fire Hazardous
Equipment
Equipment
LEGEND
Fireproofing
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ADDENDUM
(HTC REVISION HISTORY)
본 Addendum 은 Engineering specification 내용 중 추가(Addition), 삭제(Deletion), 보완(Modification)
사항을 사유와 함께 기록함.
본 Addendum 은 Engineering specification 의 "Specific job requirement" 임.
Rev.
1
Date
Para.
Category
Description
2022-
종류 : 보완
내용 : 로고, 사명 수정
05-02
담당자 : 권세형 차장
사유 : 사명변경에 따른 로고, 사명 수정