Appendix A
Transco
13
PA10
TECHNICAL SPECIFICATION FOR
NEW AND MAINTENANCE PAINTING AT WORKS
AND SITE FOR ABOVE GROUND PIPELINE AND
PLANT INSTALLATIONS
AUGUST 1995
J020 ( Rev 08/98 )
Painting Inspection Grade 3/2
Appendix A
PA10
CONTENTS
Page
FOREWORD
v
BRIEF HISTORY
SECTION 1
- PRELIMINARY
1.
SCOPE
2.
REFERENCES
3.
DEFINITIONS
3.1
General
3.2
Miscellaneous
3.3
Mandatory and non-mandatory requirements
vii
INFORMATION
1
1
1
1
1
2
-
SECTION 2 GENERAL PAINTING INFORMATION
3
4.
SELECTION OF PAINT SYSTEM
5.
CONDITIONS TO BE MET BY THE CONTRACTOR
5.1
General
5.2
Local site regulations
5.3
Inspection
5.4
Test areas
5.5
Access equipment
5.6
General cleanliness
5.7
Equipment to be protected and masked before preparation and painting
5.8
Paints containing metallic zjnc
5.9
Preparation of surfaces
5.10
Disposable cleaning materials
6.
MATERIALS
6.1
Paints
6.2
Grades of paint
6.3
Supply of paints
6.4
Storage of paints
6.5
Preparation of paint for use
3
3
3
4
4
4
4
4
4
4
5
7
7
7
7
7
7
7
1020 ( Rev 08/98 )
-i -
PA10
Painting Inspection Grade 3/2
3
Appendix A
Page
8
6.6
Pot life of paint (after mixing)
8
6.7
Paint samples
8
1.
APPLICATION
8.
MEASUREMENT
9.
SITE SAFETY REQUIREMENTS
10.
ENVIRONMENTAL
11.
VARIANTS
OF PAINT
8
OF PAINT THICKNESS
9
REQUIREMENTS
9
SECTION 3 . SPECIFIC PAINTING APPLICATIONS
SPA1
. NEW
PROTECTION
9
10
(SPAs)
AND MAINTENANCE PAINTING FOR LONG TERM
OF INSTALLATIONS
10
AND COMPONENTS
10
COATEDSURFACES
GENERAL
12.
10
PREPARATION FOR PAINTING OF UNCOATED OR UNSUITABLY
13.
AT WORKS OR SITE
PREPARATION OF PAINTED SURFACES WITH LIMITED COATING DAMAGE 10
14.
11
APPLICATION
OF
PAINT
TO
PREPARED
SURFACES
15.
11
FINAL COATING
16.
11
17.
MAINTENANCE PAINTING
17.1
General
17.2
Preparation of surfaces
17.3
Application of paint
SPA2
11
12
12
-NEW AND MAINTENANCE PAINTING FOR INDOOR USE OR
15
SHORT TERM PROTECTION
15
18.
GENERAL
19.
PREPARATION OF SURFACES
20.
NEW PAINTING FOR INDOOR USE AND FOR SHORT TERM
PROTECTION (TABLE SPA2a)
15
21.
MAINTENANCE PAINTING OF SYSTEMS FOR INDOOR USE
AND FOR SHORT TERM PROTECTION (TABLE SPA2b)
15
SPA3
-
15
17
PAINTING OF METAL SURFACES FOR HOT DUTIES
17
22.
GENERAL
23.
FOR DUTIES AT TEMPERATURES FROM 100 OCTO 149 DC(TABLE SPA3a) 17
23.1
Preparation for painting of new installations and maintenance
17
painting
J020 ( Rev 08;98 )
- ii Appendix A
Painting Inspection
Grade 3/2
4
PA10
Page
23.2
Application of paint to prepared areas
17
24.
FOR DUTIES AT TEMPERATURES FROM 150 OCTO 340 OC(TABLE SPA3b)
17
24.1
Preparation for painting of new installations and maintenance
17
24.2
Application of coating material
17
25.
FOR DUTIES AT TEMPERATURES ABOVE 340 OC(TABLE SPA3c)
18
25.1
Preparation for painting of new installations and maintenance
18
25.2
Application of coating material
painting
painting
18
SPA4 - PAINTING OF DAMP FERROUS SURFACES
21
26.
GENERAL
21
27.
PREPARATION
28.
APPLICATION
21
OF SURFACES
21
OF PAINTS
-
SPAS MAINTENANCE PAINTING OF LOW PRESSURE GAS HOLDERS 23
29.
GENERAL
23
30.
PRELIMINARY CONSIDERATIONS (PRIOR TO PREPARATION OF SURFACE
FOR PAINTING)
23
31.
SURFACE PREPARATION FOR PAINTING
24
32.
APPLICATION OF PAINT TO PREPARED SURFACES
25
33.
HOLDER CUP WATER MANAGEMENT
27
34.
GUIDANCE NOTES
28
SPA6 - PAINTING OF NON-FERROUS
SURFACES
31
35.
GENERAL
31
36.
PREPARATION OF SURFACES FOR PAINTING
31
37.
APPLICATION OF PAINT TO PREPARED SURFACES
31
Treatment of contaminated
9
TABLES
paint film
APPENDICES
A
LIST OF REFERENCES
35
B
SAFETY
39
- iii -
J020 ( Rev 08/98 )
Painting Inspection Grade 3/2
5
Appendix A
PA10
FOREWORD
This specification has been adopted by Transco and is an editorial revision of the former British Gas Transco
specification PA 10. It reflects the identity and organisational structure ofTransco a part ofBG pic.
-
This Transco specification has been approved for use throughout Transco.
Comments and queries regarding the technical content of this Transco specification should be directed to:
Lead Engineer
Transco
Norgas House
PO Box 1GB
Killingworth
Newcastle upon Tyne
NE99 1GB
Further copies of this Transco specification can be obtained from Dataform Print Management using the print
requisition form G004 quoting the Form Number of this Transco engineering document (not the designation) and
your cost code.
Transco engineering documents are revised, when necessary, by the issue of new editions. Users should ensure that
they are in possession of the latest edition by referring to the Transco Register of Engineering Documents available
on the Transco Information Library.
Compliance with this engineering document does not confer immunity from prosecution for breach of statutory or
other legal obligations.
Contractors and other users external to Transco should direct their requests for further copies of Transco
engineering documents to the department or group responsible for the initial issue of their contract documentation.
DISCLAIMER
This engineering document is provided for use by Transco and such of its contractors as are obliged by the terms of
their contracts to comply with this engineering document. Where this engineering document is used by any oth<:r
party, it is the responsibility of that party to ensure that the engineering document is correctly applied.
-v-
1020 ( Rev 08/98 )
Painting Inspection Grade 3/2
7
Appendix
A
PA10
BRIEF HISTORY
First published as BG/PS/P Al 0: Parts 1 and 2 and
Supplements CS 1 to CS 17 inclusive
Revision published as PAlO
June 1987
August 1995
~ BG pic 1995
This Transco specification is cop}right and must not be reproduced in whole or in part by any means without
the approval in writing of BG pic.
- vii-
1020 ( Rev 08/98 )
Painting Inspection Grade 3/2
9
Appendix
A
PA10: SECTION 1
TECHNICAL SPECIFICATION
FOR
NEW AND MAINTENANCE PAINTING AT WORKS
AND SITE FOR ABOVE GROUND PIPELINE AND
PLANT INSTAllATIONS
SECTION 1
1.
- PRELIMINARY
INFORMATION
SCOPE
1.1
This Specification specifies procedures for painting the surfaces of all types of ferrous and non-ferrous
metal engineering components.
1.2
This specification is not suitable for use in the following areas:
a) below ground (buried);
b) offshore installations;
c) internal coatings of pipes;
\.
d) stove enamel coatings.
1.3
An appropriate specific painting application (SPA) in Section 3 of this specification, specifies in detail
the materials, surface preparations and methods of application to be used in the particular applications. Only the
relevant SPAs need to be taken into account for a particular painting system.
1.4
Site safety requirements are given in clause 9 and Appendix B.
1.5
Environmental
2.
REFERENCES
requirements are given in clause 10 and Appendix B.
This specification makes reference to the documents listed in Appendix A. Unless otherwise specified, the latest
editions ofthe documents apply, including all addenda and revisions.
3.
3.1
DEFINITIONS
General
For the purposes of this specification, the definitions given in 3.2 and 3.3 apply.
3.2
Miscellaneous
compliant coating: a coating which complies with the requirements of the Environmental Protection Act
1990.
Contractor: the person, firm or company with whom Transco enters into a contract to v.hich this specification
applies, including the Contractor's personal representatives, successors and permitted assigns.
damp surfaces: surfaces on which water is not readily detectable but of which the temperature
point.
is below the dew
d~w point: the temperature at which the vapour pressure of the water vapour in the air is equal to the saturation
,
/
/'
vapour pressure over water.
Engineer: the Engineer appointed from time to time by Transco and notified in writing to the Contractor to act as
Engineer for the purpose of the contract, or their permitted assign.
1020( Rev08/98)
Painting Inspection Grade 3/2
-I-
11
Appendix
A
PA10: SECTION 1
/'
'/'.
V
fully weathered galvanizing: a galvanized steel surface on which a cohesive oxide layer has formed by natural
weathering. The surface will normally be dull and lacking in metallic sheen.
~uty
surfaces: metal surfaces on the assembly that will attain a temperature of 1000 C or above during use.
lona term protection: protection typically lasting ten years.
medium term protection: protection typically lasting five years.
moist surfaces: surfaces from which standing water and droplets have been removed but on which there is a
noticeable film of water.
multi-component paint: a paint supplied as separate components.
V~have g.lvanwna:
a galvanized steel surface on which a cohesive oxide layer has not yet formed. It will normally
a bright unweathered zinc surface. Some steels (e.g. silicon killed steels) may exhibit a dark surface.
paint technologist: a person suitably qualified to act as a technical adviser to Transco for the purpose of the
contract.
pot-life: the maximum time during which a coating material supplied as separate components should be used after
they have been mixed together.
',/
i":lative humidity: the ratio of the actual vapour pressure to the saturation vapour pressure over a plane liquid water
surface at the same (dry bulb) temperature, expressed as a percentage.
short term protection:
typically two years to three years life.
Transco: Transco - a part of BG pic
T-wasb: a non-proprietary
11.3.2c).
wet surfaces:
material used as a primer or pretreatment
for zinc metal surfaces. (see BS 5493, clause
surfaces on which droplets or standing water are present.
3.3
Mandatory and non-mandatory
can: indicates a physical possibility.
requirements
may: indicates an option which is not mandatory.
must: indicates a requirement in law and in matters ofheaIth and safety.
shall: indicates a Transco requirement.
should: indicates a strong preference, but allows deviation exceptionally.
will: indicates an intention by Transco to do something.
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P:)inting Inspection
1020 (
Grade 3/1.
12
Rev 08/98 )
Appendix A
PA10: SECTION 2
SECTION 2
GENERAL PAINTING
4.
4.1
INFORMATION
SELECTION OF PAINT SYSTEM
Each painting job is unique, therefore it is essential to be selective and to specify unequivocally.
4.2
For new painting projects, the design of painting is very important because the type of system chosen can
have a significant effect on the cost of painting.
4.3
For maintenance painting, special treatment may be required in certain cases involving modification or
amendment of the original design for painting.
4.4
The advice of a corrosion engineer and/or paint technologist should be obtained at the earliest stage
possible when painting or re-painting is to be carried out. This will assist in making a decision on the following:
a) The most appropriate cost effective method(s) of surface preparation.
b) The most appropriate cost effective paint system(s) to give the required service life.
\/
4.5
For painting of new items or plant, this advice (see 4.4) should be sought at the conceptual design stage
to ensure that the paint systems are cost effective.
/
.4.6
For maintenance/re-painting, the extent and methods of painting should be based on a survey of the item
or plant which would determine:
a)
The existing paint system.
b)
The extent of breakdown and corrosion.
c)
The in-service environmental conditions.
d)
The nature and extent of any surface contamination.
5.
CONDITIONS TO BE MET BY THE CONTRACTOR
5.1
General
The Contractor shall take into consideration the following general conditions:
a)
In order that the Contractor be clearly informed of Transco requirements, the contract or
specification for a particular job shall be drawn up after taking into account the appropriate
clauses, Appendices and SPA(s) in Section 3.
All parts to be painted shall be as specitied by Transco with reference to the appropriate SPA(s) in
Section 3.
b)
The method of surface preparation for each part shall be as specified by Transco with reference to
the appropriate SPA(s) in Section 3.
c)
The painting system to be applied to each part shall be as specified by Transco with reference to
the appropriate SPA(s) in Section 3.
d)
All painting shall be carried out in accordance with a programme
prepared by the Contractor and agreed by the Engineer.
of work which shall be
e)
Paints shall be listed as separate items on the contract document and should be ordered to comply
with PA9.
-3
1020 ( Rev 08/98 )
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Painting Inspection
Grade 312
13
Appendix
A
PA10: SECTION 2
5.2
Local site regulations
Relevantlocal site regulationswill be detailedin writingby the Engineer.
5.3
Inspection
All painting shall be subject to inspection and no deviation trom the requirements of this specification will be
permitted, unless previously agreed with the Engineer.
Independent inspection shall not in any way relieve the Contractor of his responsibilities under the terms or
conditions of the contract.
Detailed records of the surface preparation and paint system applied to any given structure shall be kept together
with the results of the inspection and testing carried out.
5.4
Te.t area.
5.4.1
The Contractor may be asked to prepare and paint test areas to demonstrate that a correct quality of
surface preparation with a satisfactory film thickness and finish to the paint film is obtained.
5.4.2
The equipment and techniques used for the accepted surface preparation and application of paint to the
test areas shall be representative of those to be used for the main painting work.
5.5
Acce.. equipment
5.5.1
It is of particular importance that reference is made to Appendix B and that all relevant requirements are
carried out.
5.5.2
Until approval has been given by the Engineer, fixed access equipment shall be left in position and any
movable equipment required (ladders, towers, etc.) shall remain on site and be readily available for use.
5.6
General cleanliness
5.6.1
When cleaning, surface preparation or painting operations are being carried out on site, the Contractor
shall ensure that adequate protection is given to surrounding areas and adjacent structures to avoid spotting, overspray, or contamination produced by these operations.
5.6.2
The Contractor shall be responsible for the removal of all paint and corrosion products, spent abrasive,
l:mpty containers, brushes, tissues, etc., from the site and shall ensure that the disposal of waste products complies
with the appropriate statutory requirements.
5.6.3
In all cases, the operation shall be carried out in compliance
(see Appendix B).
with the current environmental
requirements
5.7
Equipment to be protected and masked before preparation and painting
5.7.1
Prior to any cleaning, surface preparation or painting, the Contractor shall protect and mask equipment
and areas in need of protection. Care should be taken with the use of masking materials to prevent possible
malfunction of the plant.
T}pical items to be masked are fire protection equipment, weld end preparations,
heads, \-ents on control equipment, flame traps, lubrication points and nameplates.
atmosphere sensing heads, spray
~
-
5.7.2
The Contractor shall be responsible for removing all masking materials.
5.8
Paints containing metallic zinc
Special care shall be taken to ensure that paints containing metaIlic zinc (zinc-rich paints) are not allowed to
contaminate stainless steel. These paints shall not be applied within 75 mm of weld end preparation.
- 4-
Painting Inspection
1020 (
Grade 3/2
14
Rev 08198 )
Appendix
A
1-
PA10: SECTION 2
5.9
Preparation of surfaces
5.9.1
Conditions for final surface preparation
5.9.1.1 When the conditions in the working zone are such that the metal surfaces are moist or damp, final surface
preparation shall not normally be carried out.
5.9.1.2 The operation of any surface preparation or cleaning method shall not be allowed to contaminate wet
paint films.
,j
'
\'
Equipment used on site for surface preparation shall be of the type which does not cause sparks.
5.9.1.4
Electrically operated tools shall not normally be permitted on site.
5.9.l.SPower
-, V'(
I
5.9.1.3
\ /(
tools operated by compressed air shall have oil and vapour traps fitted to the compressed air lines.
rZ-;-'
'~~~~~"~~~~-p;;
p;imtion'o';;.;tions conjmence~an-c()ntari1inarifS'rriCIiidin&'~iIorg;:;;~d~aie
~Iuble saltson the workingsurf~es, shall be removedby washingwithan appropriatesolvent.
r
.
\;{;~.;.
.
'"
._~~~"~;~~~~ ~~Uld~~-~hal~
-
be~eated w; a biocidalagent and left for a mini~~~f-;~-;;~
shall
then be removed by scrubbing with stifTbristie brushes and clean water or by use of high pressure water washing~ ".-.,...
- ".
5.9.1.8
All surfaces shall normally be thoroughly dry before painting commences.
5.9.2
5.9.2.1
Abrasive blast cleaning methods
Safety requirements associated with abrasive blast cleaning shall comply with IOE/SRl21.
..
, 5.~
The type of abrasive used shall be capable of providing a blast cleaned profile (peak-to-trough height) of
not less than 30 J.1mand not greater than 75 J.1m,unless otherwise required by the appropriate SPA in Section 3.
The profile shall be measured using Testex replica tape or by an alternative device approved by the Engineer.
5.9.2.3
Non-metallic abrasives shall be of a silica free type. Air for blasting shall be clean, dry and oil free. Other
blasting media may be used with the agreement of the Engineer.
5.9.2.4
Abrasive used in an open blast system shall be of the expendable type. The re-use of expendable abrasive
shall not be permitted. A closed blasting system (e.g. vacuum blasting) may also be used. For closed vacuum
blasting systems, the re-use of abrasives shall be permitted provided that such systems efficiently clean and monitor
the size of the abrasive.
5.9.2.5
Wet blast systems or enclosed recovery blast systems, shall be used for the removal of lead-based paint,
and also may be proposed as a variant for consideration by Transco in other cases (e.g. for removal of water soluble
salts).
Following wet blasting, dry blasting shall be carried out to remove any subsequent flash rusting.
5.9.2.6
surface.
All traces of corrosion, chemical contamination, existing paint or other coating shall be removed from the
5.9.2.7
All surfaces prepared by blast cleaning shall comply with the requirements of BS 7079 (see also
ISO 7167) as specified, immediately prior to painting. The profile and degree of cleanliness shall be in accordance
with the requirements of the appropriate SPA in Section 3.
1020 ( Rev 08/98 )
Painting Inspection Grade 3/2
-5-
IS
Appendix A
-""""
.
PA10: SECTION 2
~.(2.8 All surface defects, such as surface laminations or inclusions, shaH be referred to the Engineer before any
\/ dressing is undertaken. All fins at saw cuts, burrs and sharp edges shall be removed by dressing. with the agreement
of the Engineer.
5.9.2.9
Where dressing has been necessary, these areas shall be re-blasted to remove all rust and to provide an
uate paint key.
,
2
.9.3 Water jetting
igh pressure and ultra-high pressure water jetting can be usefully employed for removal of paint, scale and
corrosion products. Since high pressures are involved, care shall be taken to ensure that appropriate safety measures
are taken and that equipment is not damaged (see IOE/SRl21).
5.9.4
Manual mechanical method.
5.9.4.1 General
The methods of surface preparation, specified in 5.9.4.2 to 5.9.4.5 inclusive, may only be used when blast cleaning
is considered to be unsuitable and with the prior approval of the Engineer. As these methods generally achieve
lower standards, additional care shall be taken to ensure an agreed standard of surface preparation is reached
These methods of surface preparation shall provide a surface of equivalent cleanliness to BS 7079, St 2 or St 3
quality which is considerably
inferior to Sa 2 ~ and may reduce the expected life ofthe paint system.
5.9.4.2 Surface preparation by hand tools
Ferrous impact tools shall not normally be used. In some areas, manual scraping may be adopted and may be
followed by further surface preparation, such as wire brushing. The scrapers shall be of the type having a carbide
tip.
5.9.4.3 Needle gunning
The guns shall have needles of small cross-section. Care shall be exercised when using a needle gun to ensure that
the profile of the surface shall not exceed 100 J.l.mand that no sharp-edged craters are left on the metal surface. All
rogue peaks shall be removed.
5.9.4.4 Abrasive discs
The use of abrasive discs may be permitted in certain circumstances and shall only be carried out with the prior
approval and under the control of the Engineer. Particular care shall be taken when using these methods on pressure
containing parts, because of the danger of creating notches.
5.9.4.5 Grinding
Grinding shall only be carried out under the direct supervision of the Engineer (see 5.9.4.4).
5.9.5
Surface preparation of weld areas
5.9.5.1 All weld areas including primed surfaces damaged by heat shall be prepared by blast cleaning to comply
with the requirements ofBS 7079 (see also ISO 7167) as specified, immediately prior to painting.
5.9.5.2 All weld flux and spatter shall be removed prior to painting operations.
5.9.5.3 Any painted areas next to the weld area shall be suitably protected when the operations specified in 5.9.5.1
and 5.9.5.2 are carried out.
5.9.6
Cleaning down
5.9.6.1 The standard of surface cleanliness shall be such that all dust, chemical contaminants, oil and moisture are
removed prior to paint application.
J020 ( Rev 08;98 )
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Painting Inspection
Grade 3/2
16
Appendix
A
'
PA10: SECTION 2
5.9.6.2 For existing sound paint surfaces, all grease and surface contamination shall be removed. For large areas,
consideration shall be given to the use of low pressure water detergent washing prior to painting.
These surfaces shall then be washed with clean water and allowed to dry prior to painting.
5.9.6.3 AU surfaces, after completion of the surface preparation and immediately prior to painting, shall be cleaned
by air blasting using clean, dry, oil-free air or vacuum cleaned to ensure that all traces of abrasive and corrosion
products are removed.
,~solvent followed
Any oil or grease on the prepared surface of the steel shall be removed by swabbing with an appropriate
by washing with a 20/. solution of detergent The surface shall then be washed with clean water
and thoroughly dried. Abrasive cleaning shall then be repeated.,
5.10
Disposable cleaning material.
5.10.1 Where cleaning and swabbing of steel and paint film surfaces are required, disposable lint-free swabs shall
be used. Cloth rags shall not be used. Swabs shall be used once only.
5.10.2 Areas below surfaces being prepared as specified in 5.9.6.4 shall be protected from drips, spillage, etc., to
prevent pennanent scarring.
8.
MATERIALS
8.1
Paints
Unless otherwise specified, all paints used on anyone contract shall be supplied by one manufacturer only. All
paints shall be ordered against PA9 which shall be quoted on all relevant documentation. Attention shall be drawn
to the Environmental Protection Act /990, prior to selection of paints.
6.2
Grades of paint
Paints are obtainable in both brushing and spraying grades. When ordering paints, the grade required shall be
specified.
6.3
Supply of paints
All paints shall be provided by the Contractor.
6.4
Storage of paints
All paints shall be stored under cover and in conditions recommended by the paint manufacturer and in accordance
with the appropriate tire regulations. On operational sites, the storage method and area shall be upprovcd by the
Enginet:r.
\
No paint shall be used beyond the manufacturer's
6.5.2
All paints shall be prepared adjacent to the location where the painting work is to be carried out.
stated shelf life.
6.5.3
The condition of the paint shall be checked before preparation begins and any unsatisfactory painting
materials shall be discarded.
/
!, ?r5".4 All paints shall be thoroughly prepared by mechanically mixing to ensure that no sediment is ldt. For 5litre containers or less, hand mixing can be considered. In all cases, the manufacturer's instructions shall be
followed.
.
.
Preparation of paint for use
6.5
6.5.1
'
-7 -
J020 ( Rev 08/98 )
Painting Inspection Grade 3/2
17
Appendix A
PA10: SECTION 2
6.8
Pot life of paint (after mixing)
Multi-component paints have a limited pot life. This information shall be obtained from the manufacturer and also
be stated on the container. Paints of this type shall not be used after the stated pot life. When a multi-component
paint is being used, new material shall not be added to any of the old material left in the pot.
6.7
Paint sample.
Representative
\
. ,t'~
\ '
\
J
\
/,(
/
samples of each batch or grade of paint may be requested by the Engineer.
APPLICATION OF PAINT
Paint shall normally be applied when the relative humidity in the work zone is less than 90% or when the
Y?;Y
air and metal temperatures are at least 3 0 C above the dew point. Measurement of relative humidity and dew point
shall be carried out using a whirling hygrometer complying with and used in accordance with as 2842.
Ambient and substrate temperatures should not be below the minimum application temperature for the paint, as
sta~ in the manufacturer's instructions being used, as advised by the manufacturer or as stipulated by Transco.
Paint shall not normally be applied when conditions in the working zone are such that the prepared surface
\~..
ISlikely to become moist or damp during the painting operation.
When this condition prevails, and cannot be overcome by altering the normal operating conditions
stream selection) painting shall be carried out in accordance with SPA4 in Section 3.
(e.g. regulator
7.3
After completion of the specified cleaning process, metal surfaces shall be painted as specified in the
appropriate SPA in Section 3 (by brushing or spraying).
7.4
Painting equipment used shall be of a type complying with the paint manufacturers
recommendations.
.'~
75
All paint shall be applied in such a manner as to ensure a firmly adherent film, free from misses, tears,
runs, ~gs, etc.
/
'7.6
Stripe coating shall be necessary to achieve the required dry film thickness (DFT) at edges and to ensure
coverage of weld profiles.
7.7
[n the course of painting operations, all painted areas shall be thoroughly dried before being oVt:rcoated
and any contamination of the paint tilm shall be dealt with as specified in Tab[e 1 before further coats of paint are
applied.
7.8
The final coating shall be free from significant visible impcrfections.
7.9
Contaminated
paint tilms shall be trcated in accordance v.ith Tab[e 1 prior to over painting.
8.
MEASUREMENT OF PAINT THICKNESS
8.1
The measurement of both wet and dry paint thickness shall be carried out during application on each coat
and shall be in accordance with procedures in BS 3900: Part C5, except that the OFT gauge should be calibrated
using the prepared surface.
8.2
Quality control thickness measurements of paint tilms containing micaceous iron oxide (M[Q) pigment,
and all layers of paint applied over such films, shall be carried out using a wet film thickness gauge (c.g. comb
gauge).
The wet tilm thickness needed to achieve the specified DFT ditTers from paint to paint and for each manufacturer.
The manufacturer's literature shall be consulted for each application.
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Painting Inspection
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Grade 3/2
18
Appendix
A
"
PA10: SECTION 2
9.
SITE SAFETY REQUIREMENTS
All work carried out on the site shall comply with good safe working practice and the specific conditions of a
Permit to Work where issued on an operational site. The following list of conditions or activities does not purport to
include an requirements for safety but it summarizes the more important warnings included in this specification and
presents them here for easy reference:
- proper
a)
Safe working areas
b)
Safety requirements associated with abrasive blast cleaning (see 5.9.2).
c)
Identification of coating materials
flammability, etc. (see PA9, 8.2).
d)
Compliance with fire regulations
e)
Safe handling of coating materials and safety precautions on site (see Appendix B, B.I and B.2).
use and erection of scaffolding, ladders, etc. (see 5.5.1).
- with reference
- storing
to any associated hazards such as toxicity,
of combustible materials (see 6.4).
10.
ENVIRONMENTAL REQUIREMENTS
All works carried out on the site including storage and disposal of paint and all waste materials shall be in
accordance with the current environmental requirements (see Appendix B, B.l and B.3).
The Contractor shall be alerted of the possible toxic nature of the deposits and paint debris, and the appropriate
action and Certification required for their disposal (see Appendix B, clause B.3.1).
11.
VARIANTS
A contractor shall only propose variants to this specification where the text indicates that variants would be
considered by Transco.
TABLE1 - Treatment of contaminated paint film
Type
Loose paint particles,
contamination
of contamination
rust. debris
Treatment
and vther atmospheric
or salt deposition
Wash down using soft nyIon brushes and clean water.
thoroughly
Dry
Oil or grease
Brush ..nd ",ash ",ith an appropriate solvent then scrub with a 2%
solution of detergent in clean water. Wash with clean "'ater and dry
thoroughly
Foreign materials (eg. shot or grit) embedded in the paint film
Re-prepare the affected areas and re-apply the complete pamting
system
--.
--.._-
1020 (
-9 -
Rev 08,98 )
P:1inting Inspection Crade 3/2
19
Appendix A
PA10: SECTION 3
SECTION 3
SPECIFIC PAINTING APPLICATIONS (SPAs)
SPA1
. NEW AND MAINTENANCE
PAINTING FOR LONG TERM PROTECTION OF
INSTALLATIONS AND COMPONENTS
12.
GENERAL
12.1
This SPAI applies to the painting at works or site of new installations and components and to site
maintenance painting of carbon steel surfaces operating below 1000 C.
It is normal practice for new components to be prepared and part painted at works for subsequent completion at site.
This SPAI shall apply to:
12.2
inS.7.
a)
Part painting of new components at works (see Table SPAla).
b)
Completion at works or site of components part painted at works (see Table SPAlc).
c)
Site painting of uncoated and unsuitably coated surfaces (see Tables SPAla, SPAlb and SPAlc).
d)
Site maintenance painting (see Table SPAId).
Before preparation and painting commences. those surfaces not to be painted shall be masked as specified
12.3 Each coat of paint shall be of a contrasting colour to the previous coat.
12.4 The operations for preparation are specified in clauses 13 and 14 and for painting in clauses IS and 16.
12.5 Site maintenance
13.
13.1
painting is described in clause 17.
PREPARATION FOR PAINTING OF UNCOATED OR UNSUITABLY COATED SURFACES
AT WORKS OR SITE
The procedure in 13.2 is also described in Table SPAla.
13.2
All mill scale, corrosion products and, where applicable,
n:moved from the surface.
unsuitable existing paint and coatings shall be
The surface finish at the time of painting shall be equivalent to BS 7079 Sa 2 Yz quality and have a profile within the
range ono jlm and 75 jlm . This shall normally be achieved by blast cleaning as specified in 5.9.2.
.
/14.
PREPARATION OF PAINTED SURFACES WITH LIMITED COATING DAMAGE
14.1
The following procedure (see also Table SPAlb)
coating has occurred during transport and/or storage.
shall be applied where slight damage to the factory
14.2
The atfected surfaces shall be prepared as specified in 5.9.4 to comply with the requirements of BS 7079 St
3 as a minimum quality. The method of cleaning shall normally be by means of mechanical wire brushing but other
methods of preparation may be proposed to Transco for consideration as variants.
14.3
The edges of the existing remaining coating shall be feathered.
14.4
Areas of extenshe
coating damage shall be prepared in accordance with 17.2.2.
J020 ( Rev 08/98 )
- 10-
Painting Inspection
Grade 3/2
20
Appendix A
PA10: SECTION 3
1/
1~
APPLICATION
OF PAINTTO PREPAREDSURFACES
15.2
coat.
For paint applied at works the preferred system is a high solids solvent based epoxy primer and epoxy MIO
15.1
All paint shallbe appliedas specifiedin clause7.
Alternative equivalent compliant systems are available, such as water-borne paints and may be proposed to Transco
for consideration as variants.
15.3
For painting at site the preferred systems are given in Table SPA Ie.
15.4
One coat of primer shall be applied, by brushing or spraying as appropriate, to all prepared exposed metal
within 4 h of metal preparation and before any rust blooming or contamination of the surface occurs. The OFT shall
be as specified in Table SPAle (measured as specified in clause 8). All welds and edges shall be stripe coated to
assist in achieving the minimum OFT in these areas.
The paint shall overlap onto any existing coating by at least 100 rom. The manufacturers'
times shall be followed.
recommended
overcoating
15.5
One coat of MIO shall be applied to all primed surfaces, by brushing or spraying, to a OFT as given in
Table SPAIe (determined by means of a wet film thickness gauge as specified in clause 8).
15.6
Overcoating is normally carried out within three months of the application of the MIO coat and in
accordance with Table SPA Ic.
18.
FINAL COATING
16.1
On completion of painting in accordance with the requirements of clause 15, the final coating shall be
carried out as specified in 16.2 to 16.5 inclusive (see also Table SPAlc).
16.2
All areas to be painted shall be free of all surface contamination immediately prior to painting as specified
in 5.9.6.
16.3
One coat of high build undercoat shall be applied overall, by brushing or spraying, to a OFT as specitied in
Table SPA Ie (determined by means of a wet film thickness gauge as specified in clause 8). The manufacturers'
recommended overcoating times shall be followed.
16.4
One coat of finish shall be applied, by brushing or spraying, to a OFT as specified
(determined by means of wet tilm thickness gauge as specified in clause 8).
in Table SPA Ie
16.5
The final coating shall have an acceptable uni form appearance and shall be free from cosmetic defects.
17.
MAINTENANCE
PAINTING
17.1
General
17.1.1 The Engineer shall specify the areas to be painted, the appropriate method of surface preparation and the
paint systems to be appl ied. The number of coats applied wi 11be dictated by the degree of breakdown of the existing
paint system and its required life.
17.1.2 For installations previously painted with drying oil or chlorinated rubber paint systems, maintenance painting
can generally be carried out with either of the systems detailed in Table SPA I e.
17.1.3 Installations previously painted in accordance with Table SPAle should generally be repainted with the same
system.
- II
1020 ( Rev 08/98 )
Painting Inspection
Grade 3/2
21
Appendix
A
PA10: SECTION 3
17.2
Preparation of surfaces
17.2.1 Prior to repainting, some existing paint systems may need a key to ensure adhesion for the new paint. This
can be produced by abrading for small areas but sweep blasting is recommended for large areas.
17.2.2 For areas where the existing paint system is to be completely removed or where the substrate is exposed,
the surface preparation shall be by blast cleaning or wire brushing in accordance with clauses 13 and/or 14, as
specified by the Engineer.
17.3 Application of paint
17.3.1 The primer shall be applied to the prepared surfaces in accordance with 15.4 followed by the MIO in
accordancewith 15.5.
17.3.2 The final coats shall be applied in accordance with clause 16 either to the areas prepared and painted
A
ve, or to the overall installation as specified by the Engineer.
TABLE SPA1a. Operations chart for us. with clau..s13
coated surfaces
Operation
number
Subject of operation
and 15 for uncoated or unsuitably
Comments
Relevant clauses in PAlO
Section 1
5.7
Section 3
BS 7079 Sa 2~ quality; maximum
profile 7S um
5.9.2
13.2
Clean all surfaces
Immediately
application
primer
5.9.6
4
Apply primer
Dry film thickness dependent upon
system (see Table SPA Ie)
7and8
15.4
5
Apply micaceous iron
oxide
Dry film thickness 75 urn minimum
7and8
15.5
15.6
1
Mask areas
2
Blast clean
3
. Operations
TABLE SPA1b
damage
Operation
number
prior
to
chart for use with clauses 14 and 15 surfaces with limited coating
Subject of operation
Comments
Relevant clauses in PAlO
Section 2
I
Mask areas
2
Mechanically
wire
brush and feather edges
'.
3
Clean all surfaces
BS 7079 StJ quality as minimum
Apply primer
5
Apply micaceous iron
oxide
.
Immediately
applicaticn
14.2
prior
to
primer
5.9.6
! Dry mm thickness dependent upon
s)stem (see Table SPA Ie)
7 and 8
15.4
Dry film thickness 75 urn minimum
7 and 8
15.5
15.6
- 12-
Painting Inspection
5.9.4
14.3
I
4
Section 3
5.7
J020 ( Rev 08/98 )
Grade 3/2
22
Appendix A
PA 10: SECTION 3
TABLE SPA1c . Operations chart for final coatings
OperatioD
number
Subject of operatioD
Relevant clauses in PAlO
Comments
SeetioD 1
5.9.6
SeetIoDJ
16.1
16.2
I
Clean all surfaces
2
Apply undercoat
Dry film thickness dependent upon
system (see Table SPA Ie)
7 and 8
16.3
3
Apply finish
Dry film thickness dependent upon
system (see Table SPA Ie)
7 and 8
16.4
TABLESPA1d. Operations chart for maintenance painting
OperatioD
number
Relevant clauses in PAlO
Comments
Subject of operation
Section 1
5.7
1
Mask areas
2
Surface preparation of
existing paint system
Key existing
required
3
Surface preparation of
exposed
areas
of
substrate or where
paint is to be removed
Blast cleaning or wire brushing as
specified
4
Clean all surfaces
Immediately prior to painting
5
Spot primer
6
Spot micaceous
oxide
7
Apply undercoat
8
Apply finish
iron
system
17.2.1
if
5.9
17.2.2
5.9.6
Overlapping existing paint at least
100mm
7
17.3.1
Overall or to areas spot painted
above, as specified
7
17.3.2
- 13 -
J020 ( Rev 08;98 )
Painting Inspection Grade 3/2
paint
Section J
23
Appendix A
PA10: SECTION 3
I
SPA1e
l)tABLE
Stage
...
")).,~
~{"/J
I
,\tJ~ ;/
~
~.~<i
\~
-Preferred systems
(,C1J C.
,
L\\'
!
CompUaat solveat-based
High build epoxy aluminium primer
7S
2
Epoxy Micaceous iron oxide
7S
3
High build epoxy undercoat
7S
4
Epoxy or polyester acrylic finish
40
Stage
NOTE
Minimum dry film tbickaess
(um)
Water-borne acrylic
Miaimum dry mm tbickaess
(um)
I
Primer
50
2
Micaceous iron oxide
75
3
Undercoat
50
4
Finish coat
50
- Other compliant
systems which meet the requirements of PA9 and which give equivalent long
term performance to the systems specified above may be proposed as variant for consideration
J020 ( Rev 08/98 )
- 14-
Painting Inspection
by TransCo.
Grade 3/2
24
Appendix A
PA10: SECTION 3
SPECIFIC PAINTING APPLICATION (SPA)
SPA2. NEW AND MAINTENANCE PAINTING FOR INDOOR USE OR SHORT TERM PROTECTION
18.
GENERAL
18.1 This SPA2 applies to new and maintenance painting for indoor use or short term protection of carbon steel
surfaces operating below 100 0 C.
The operations chart shown in Table SPA2a relates to new painting and Table SPA2b to maintenance
19.
19.1
painting.
PREPARATION OF SURFACES
All surfaces not to be painted shall be masked in accordance with 5.7.
19.2
Before cleaning operations commence, all surface contaminants shall be removed by washing with an
appropriate medium.
19.3
Surfaces shall be prepared as specified in 5.9.4 to comply with the requirements of BS 7079 St 3 quality as
a minimum. The method of cleaning shall normally be by mechanical wire brushing but other methods of
preparation may be proposed to Transco for consideration as a variant.
19.4
The edges of existing sound coating shall be feathered.
20.
NEW PAINTING FOR INDOOR USE AND FOR SHORT TERM PROTECTION (TABLE SPA2a)
20.1
Compliant materials normally based on drying oil or water borne acrylic paints shall be specified and
applied in accordance with clause 7.
20.2
One coat of primer shall be applied, normally by brushing. The paint shall overlap onto any existing
coating by at least 100 mm. The manufacturers' recommended overcoating times shall be adhered to.
20.3
One coat of MID build coat shall be applied to all primed surfaces normally by brushing.
20.4
If a decorative appearance is required, one coat of undercoat and finish shall be applied. The undercoat
should be of a complementary colour to the finish coat.
21.
21.1
MAINTENANCE
PAINTING OF SYSTEMS FOR INDOOR USE AND FOR SHORT
PROTECTION (TABLE SPA2b)
Areas requiring maintenance painting shall be prepared in accordance with 19.1 and 19.2.
TERM
21.2
Damaged areas shall be prepared in accordance with 19.3 and 19.4 and spot repaired in accordance with
20.1 to 20.3 using primer and MIO. The coating shall overlap 100 mm onto the existing sound coating.
21.3 Depending on the required finish, either one full coat of MIO or alternatively one full coat of undercoat and
finish to the required colour shall be applied.
- 15 -
1020 ( Rev 08/98 )
?ainting Inspection Crade 3/2
25
Appendix A
PA10: SECTION 3
V'~BLE
SPA2a
-Operation
chart for new painting
Operation
number
Subject of operation
1
2
3
4
5
6
Mask off
Remove all deposits
Wire brush
Clean areas
Apply primer
Apply micaceous iron
oxide
7"
8"
.
..
Section 1
5.7
BS 7079,S13 as a minimum
Minimum dry film thickness 45 urn
Minimum dry film thickness 50 urn'
Section 3
19.1
19.2
19.3
5.9.4
5.9.6
7
7
20.2
20.3
Apply undercoat
Apply finish
Minimum dry film thickness 45 urn.
7
20.4
Minimum dry film thickness 25 urn.
7
20.4
These values to be determined by means of a wet film thickness gauge as specified in clause 8.
SPA2b - Operation chart for maintenance painting
Operation
number
Subject of operation
1
2
3
4
5
6.
Mask off
Remove all deposits
Wire brush
Clean areas
Spot prime
Spot micaceous
iron
oxide
7
8
Apply undercoat
Apply tinish
9
..
Rele\l8nt clauses in PAlO
Operations 7 and8 are to be carried out if a decorative fmish is required.
'.'/ /~LE
.
Comments
Apply full coat of
I micaceous iron oxide
Comments
BS 7079,S13 as a minimum
Relevant clauses in PAlO
Section 1
Section 3
5.7
19.1
19.2
19.3
Minimum dry tilm thickness 45 um
Minimum dry film thickness 50 urn..
5.9.4
5.9.6
7
7
20.2
20.3
Minimum dry film thickness 45 urn..
Minimum drV film thickness 25 urn"
7
7
21.3
21.3
Minimum dry film thickness 50 urn..
7
21.3
On completion of operation 6, if decorative finish is required, operations 7 and 8 only are to be carried out.
Alternatively, operation 9 may be carried out on completion of operation 6, if a decorative finish is not
required.
These ,,~lIues to be determined by means of a wet film thickness gauge as specified in clause 8,.
1020 ( Rev 08/98 )
- 16-
Painting Inspection
Crade 3/2
26
Appendix A
PA 10: SECTION 3
SPECIFIC PAINTING APPLICATION (SPA)
VSPA3.
22.
22.1
PAINTING OF METAL SURFACES FOR HOT DUTIES
GENERAL
This SPA3 applies to the painting of surfaces which are likely to operate at 100 0 C or above.
22.2
Areas where the operating temperature of the metal surface is likely to reach, but not exceed, 1490 C shall
be painted as specified in clause 23.
22.3
Areas where the operating temperature of the metal surface is likely to exceed 1490 C and 340 0 C shall be
protected as specified in clauses 24 and 25 respectively.
<~
23.1.1
:::::::~:::gE::~:~:;;~~~:::::~~~;~.)
All surfaces not to be painted shall be masked as specified in 5.7.
23.1.2 Before cleaning operations commence, all surface contaminants shall be removed by washing with an
appropriate medium.
23.1.3 All areas shall be prepared for painting as specified in 5.9.2.
23.1.4 Mechanical cleaning in accordance with 5.9.4 may be allowed in small areas at the discretion of the
Engineer.
/'
'\/
23.2
Application
of paint to prepared area.
23.2.1 A heat resistant. aluminium pigmented epoxy or urethane primer shall be applied in accordance with the
manufacturers' recommendations to all areas of exposed metal. Paint shall be applied within four hours of blast
cleaning but before any rust blooming or contamination occurs.
23.2.2 Within the manufacturers' recommended overcoatjng times, further coats of primer shall be applied to
achieve a total minimum DFT of 100 I!m for urethane or 250 I!m for the epoxy coating, as appropriate.
23.2.3
Heat resistant paints are normally pigmented with aluminium
colour may not be possible.
flake, therefore a finish to a designated
24.
FOR DUTIES AT TEMPERATURES FROM150 0 C TO 340
24.1
24.l.I
Preparation for painting of new installations
and maintenance
All surfaces not to be painted shall be masked as specified in 5.7.
24.1.2 Before cleaning operations
appropriate medium.
commence,
all surface contaminants
0
C (TABLE SPA3b)
painting
shall be removed by washing with an
24.1.3 All areas shall be prepared for painting as specified in 5.9.2.
2,{2
Application of coating material
/24.2.1 Thermally sprayed aluminium (TSA) shall be applied to prepared surfaces in accordance with as EN
22063 and/or as 2569: Part 2.
24.2.2 Where TSA is deemed to be impractical due to operational restraints, or judged to be too high a standard
of coating for this temperature range, consideration shall be given to the use of paint systems based on inorganic
zinc silicate or polysiloxane primers. Paints shall be applied in accordance with the manufacturers'
recommendations.
1020 ( Rev 08/98 )
Painting Inspection Crade 3/2
- 17-
27
Appendix A
PA10: SECTION 3
24.2.3 With the use of inorganic zinc silicate, mud cracking of the coating may result if the manufacturers,
recommended film thickness is exceeded.
V'
25.1
FOR DUTIES AT TEMPERATURES ABOVE 340 0 C (TABLE SPA3c)
Preparation for painting of new Installations and maintenance painting
All preparations
shall be carried out in accordance with 23.1.
25.2
Application of coating material
25.2.1 TSA, which is the preferredcoating choice, shall be applied in accordancewith BS EN 22063 andlor BS
2569: Part 2.
25.2.2 Where TSA is deemed to be impractical due to operational restraints, consideration shall be given to the
use of paint systems based on inorganic zinc silicate or polysiloxane primers. Paints shall be applied in accordance
with the manufacturers' recommendations.
25.2.3 With the use of inorganic zinc silicate, mud cracking of the coating may result if the manufacturers'
recommended film thickness is exceeded.
25.2.4 Where TSA and inorganic zinc silicate primers are used, they shall be sealed with a high temperature
sealer. Sealers shall be applied and cured in accordance with the manufacturers' recommendations.
- 18-
Painting Inspection
1020 ( Rev 08/98 )
Grade 3/2
28
Appendix A
PA10: SECTION 3
SPA30 . aperotlono ehort for hot duty .u""CO" from 100 0 C to 149 0 C
\/~E
Operatio.
Dumber
Subject o( operatioD
CommeDts
RelevaDt clauses in PAlO
SectioD 3
23.1.1
SectiOD1
5.7
1
Mask
2
Remove
contamination
3
Blast clean
BS7079 Sa 2YJ quality; maximum
profile 75 um
4
Apply primer
Dry film thickness depends upon
primer used
23.2.1
---. -
5
Apply additional coats
of primer
Dry film thickness depends upon
primer used
23.2.2
SPA3b- Ops"'-
t/~8'LE
23.1.2
surface
ehort for hot duly .urfocos from 150 0 C to 340 0 C
Subject o( operatioD
Operation
number
Comments
Relevant clauses in PAlO
Mask
2
Remove
contamination
3
Blast clean
BS7079 Sa 3 quality; maximum
protile 75 urn
4
Apply system
System to be chosen from the list of
options below
Subject
Section 3
24.LI
Section 2
5.7
I
Operation
23.1.3
5.9.2
24.1.2
surface
of operation
Comments
24.1.3
5.9.2
24.2.2
Relevant
clauses
in PAlO
i
number
Section 2
sprayed
a
Thennally
aluminium
b
Inorganic zinc silicate
c
Polysiloxane
coating
inorganic
In accordance with BS 2569: Part 2
and/or BS EN 22063
Apply
in
manufacturers'
accordance
instructions
with
Apply
in
manufacturers'
accordance
instructions
\\ith
24.2.2
I
24.2.2
- 19-
1020 ( Rev 08/98 )
Painting Inspection Grade 3/2
Section 3
24.2.1
29
Appendix A
PA10: SECTION 3
VABLE SPA3c . Operations chart for hot duty surface. operating above 340 0 C
Operation
number
Subject or operation
CommenD
Relevant clauses in PAlO
Section 1
S.7
1
Mask
2
Remove
contamination
3
Blast clean
BS7079 Sa 3 quality; maximum
profile 7S urn
4
Apply
thermally
sprayed aluminium
In accordance with BS 2S69: Part 2
and/or BS EN 22063
NOTE
- Thermally
Section J
24.1.1
surface
24.1.2
5.9.2
24.1.3
25.2.1
sprayed aluminium is the preferred system and will provide the longest service life.
Alternative coating systems to thennally sprayed aluminium are:
4a i)
ii)
Inorganic zinc silicate
Apply
in
accordance
manufacturers' instructions
with
2S.2.2
Apply sealer
Apply
in
accordance
manufacturers' instructions.
with
2S.2.4
Not required
coatings
iii)
4b
Apply
sealer
heat
to cure
Polysiloxane inorganic
coating
polysiloxane
In accordance with manufacturers'
instructions. Check plant operating
conditions
25.2.4
Apply
in
accordance
manufacturers' instructions
25.2.2
- 20-
P:1inting Inspection
for
with
1020 (
Crade 3/2
30
Rev 08/98 )
Appendix A
PA10: SECTION 3
SPECIFIC PAINTING APPLICATION (SPA)
V
~A4
-
PAINTING OF DAMP FERROUS SURFACES
28.
GENERAL
26.1
This SPA4 applies to the painting of ferrous surfaces on which the presence of condensation during
painting cannot be operationally prevented.
A number of paint systems are available which are tolerant to damp surfaces but, in general, cannot be used on wet
surfaces (see clause 3). They shall not be used when ice is present, or where the surface temperature is likely to be
below 3 0 C.
\~
Types of materials which are known to perform satisfactorily on damp metal surfaces are:
A(
'b(
V
Moisture curing polyurethanes.
High solids multi-component
epoxy paints.
£.
PREPARATION OF SURFACES
27.1
Any oil or grease shall be removed by swabbing with grease removing solvents. The surface shall
subsequently be washed with a 2% detergent solution.
27.2
All surfaces shall be blast cleaned as specified in 5.9.2 to achieve as 7079 Sa 2 Yzquality immediately
prior to paint application. In general, a degree of rust blooming is acceptable, but in all cases, the manufacturers'
instructions shall be followed.
27.3
All grit and dust shall be removed from the blast-cleaned surface by washing with clean water.
27.4
Immediately prior to painting, all droplets and standing water shall be removed from the surfaces to be
painted by mopping or using a squeegee. Cloths or rags shall only be used if they are lint-free.
/'
':!d.
28. I
APPLICATION OF PAINTS
All paints shall be applied in strict accordance with the manufacturers'
28.2
All paints shall be brush appli~d.
28.3
An operations chart for painting in accordance with the above procedure is givt:n in Table SPA4a.
1020 ( Rev 08/98 )
Painting Inspection Grade 3/2
instructions.
- 21 -
31
Appendix A
PA10: SECTION 3
-
TABLE SPA4a Operation chart for painting damp metal surface.
Operatio8
Dumber
Subject or
operatio.
Period before ned
operation
Minimum
Comments
MaDmum
Relevant clauses in
PAlO
Section 1
Section 3
5.9.6
27.1
5.9.2
27.2
1
Remove all surface
contamination, etc.
2
Blast clean
3
Wash
To remove all
grit and dust
27.3
4
droplets
Remove
and standing water
Surface
shall
not be wet
27.4
5
Apply system
4h
In
accordance
with
manufacturers' instructions
- 22-
Painting Inspection
BS 7079 Sa 2Y2
quality
To be applied
by brushing
7
28.2
J020 ( Rev 08/98 )
Grade 3/2
32
Appendix A
PA10: SECTION
3
SPECIFIC PAINTING APPLICATION (SPA)
SPAS-
MAINTENANCE PAINTING OF LOW PRESSURE GASHOLDERS
29.
GENERAL
29.1
This SPAS details procedures for the planning. surface preparation, cleaning and painting of external
surfaces oflow pressure water sealed gasholders (see clauses 30, 31 and 32).
Holder cup water management during preparation and painting operations of cup, grip and the wind and water lines
is described in clause 33.
Guidance Notes relating to safety during preparation and painting operations are described in clause 34.
Waterless gasholders of the Wiggins, Hammond, Klonne and MAN. types and the above ground frame work and
water tank associated with water sealed gasholders shall be painted in accordance with SPA 1.
The painting of damp ferrous surfaces. such as tank bottom plates and gas mains in pits which extend into the
gasholder foundation is covered by SPA4.
29.2
29.2.1
Tender documents for all gasholder painting contracts shall clearly identify the following:
a)
Surfaces to be painted.
b)
The method of surface preparation.
c)
The painting systems to be applied and the finished colour(s) defined to BS 4800.
d)
Surfaces and items not to be painted.
e)
Sections of the structure and attachments which need to be protected by the Contractor during the
preparation and painting operations.
The selection of paint systems to be applied should be determined by the following:
a)
Environmental
b)
Existing paint system.
c)
Extent of paint breakdown and corrosion.
d)
Method and extent of preparation.
c)
Standard of cleanliness achievable.
1)
Service life requirement.
in-service conditions.
A range of paints which give acceptable performance
selecting the paint system.
is available and specialist advice should be sought when
Watcr-borne acrylics, compliant alkyds and moisture cured urcthanes may be used satisfactorily
in most cases.
29.3
Reference shall be made to the Guidance Notcs in clause 34 and, where applicable. relevant sub-clauses
shall be included in the tender documents.
- 23-
1020 ( Rev 08/98 )
Painting Inspection Grade 3/2
33
Appendix
A
PA10: SECTION 3
30.
PREUMINARY CONSIDERATIONS (PRIOR TO PREPARATION OF SURFACES FOR
PAINTING)30.1
Extensive rust staining alone will not necessarily warrant repainting as this can
be removed by means of chemical treatment
30.2
The pH of the holder water should be determined prior to any major painting proposal and adjusted to
ensure that an acceptable value (within the rang pH9 to pHIO) is achieved at least six months prior to painting. No
further dosing should be carried out until six months after completion of painting.
30.3
Consideration should be given to the need for the isolation of all electrical equipment titted to the
gasholder, particularly in respect of electrical anti-freeze systems.
30.4
The Engineer shall ensure that Grid Control is notified and local procedures are complied with to prevent
accidental movement of the gasholder during the painting contract
30.S
AU surfaces not to be painted or areas which may be adversely affected by preparation and painting
operations shall be identified by the Engineer and suitable protection agreed and carried out by the Contractor.
Typical areas and items of equipment to be protected are:
a)
Water seals.
b)
Guide carriages.
c)
Lubrication facilities.
d)
Steam, water or anti-freeze injection facilities (including nozzles).
e)
Anti-siphon vents.
t)
Flexible hoses.
g)
Electrical antifreeze facilities (including cables).
h)
Junction boxes.
i)
Instrumentation.
j)
Control equipment and associated services and any other operational equipment suspended in the
cups or tank..
30.6
The Contractor shall be alt.:rted of the possible toxic nature of the deposits and paint debris and the
appropriate action and certification required for their disposal (see B.3.1).
30.7
Where nl:cessary, the Engineer shall arrange for the oil to be removcd from the surface of the water scals
before cleaning and surface preparation commence. Examination of the cups shall also be carried out prior to the
cupping up of each lift.
30.8
The Contractor shall not attempt to lower water levels unless specifically directed to do so by the
Engineer. In all cases, the removal of watcr shall be carried out under the direct supervision of the Engineer or his
nominated n:presentative.
30.9
The Engineer shall arrange for the gasholder lifts to be positioned as necessary, to facilitate preparation
and painting.
The area on which work is taking place should nonnally be at the tank balcony/cupping
- 24-
Painting Inspection
level.
J020 ( Rev 08/98 )
Crade 3/2
34
Appendix A
PA10: SECTION 3.
31.
SURFACE PREPARATION FOR PAINTING
31.1
A number of preparation techniques may be used on a project (e.g. blast cleaning. water jet cleaning.
mechanical cleaning. manual cleaning. etc.).
Precautions shall be taken to prevent debris from the work entering the cups, the tank. and any other vulnerable
work
areas.
31.2
Before preparation and painting commence. surfaces for which a particular method of preparation has
been specified shall be clearly defined by the Engineer.
Non-drying paint has been found to mask severe corrosion and should be removed prior to painting. Methods such
as scraping. the application of an approved heavy duty solvent, detergent, hot water or steam cleaning may be
employed for this purpose (also see 32.6, Note 5).
31.3
All surfaces shall be prepared for painting in accordance with 5.9).
Where surfaces are blast cleaned, the surface finish immediately prior to painting
2 Vaquality and have a profile within the range of 30 ~ to 75 ~
.
shall be equivalent
to as 7079 Sa
Particular reference is drawn to 5.9.2.5 if lead based paints are present.
Where surfaces are to be prepared by mechanical or hand tools, or high pressure water jetting. the method of surface
preparation shall provide a surface of equivalent cleanliness to as 7079 St 3 as a minimum quality. The surface
shall also be free of significant areas of mill scale.
31.4
The existing remaining
32.
32.1
APPLICATION OF PAINT TO PREPARED SURFACES
All paint shall be applied as specified in clause 7.
coating will be feathered at the edges.
Brush application of the primer is essential when the surface has not been totally blast cleaned or where
previous coating remain.
areas of
the
Primer coats may be applied by spraying only when the metal surface has been fully blast cleaned.
Subsequent coating should be applied by brushing or spraying as appropriate.
Application
of paint by roller is not recommended.
Prior to each application
of paint, all surfaces shall be free of contamination
For the application of paint onto surfaces predominantly
32.7 applies. For all other areas 32.2 to 32.6 may apply.
32.2
as specified in 5.9.6.
immersed in water (i.e. cups, grips, wind and water lines).
The primer shall be applied to all prepared exposed metal to a OFT as specified in the manufacturers'
This may range from minimum spot preparation to the application of a full primer coat as specified in
instructions.
the manufacturers' instructions.
Stripe coating may be necessary to achieve the required OFT at edges, rivets and weld areas.
Where applicable, spot priming shall overlap onto any existing sound coating
The manufacturers' recommended
have elapsed before overcoating.
overcoating
least 100 mm.
times shall be followed, although not more than seven days shall
- 25-
1020 ( Rev 08198 )
Painting Inspection Grade 3/2
by at
35
Appendix A
PA10: SECTION 3
32.3
One coat of MIO high build paint shall be applied to all newly primed surfaces, overlapping onto existing
sound coating by at least 100 mm. The DFT shall be as specified in the manufacturers' instructions (determined by
means of a w~ film thickness gauge as specified in clause 8).
The manufacturers' recommended overcoating times shall be followed although not more than seven days shall
have elapsed before overcoating.
32.4
One further coat of MIO paint may then be considered in the following situations:
a)
Where there has been minimal breakdown of the existing paint system, the additional coat shall
be applied only as a spot coat, (the total system will then comprise of spot primer, spot MIO, spot
MIO, fmish coat).
b)
If justified, or where additional protection is required, the additional coat shall be applied as full
coat (the total system will then comprise of primer and MIO to prepared areas, followed by full
MIO, full finish).
The OFT shall be as specified in the manufacturers
as specified in clause 8
instructions (determined by means of a wet film thickness gauge
The manufacturers' recommended drying times shall be followed before any operation of the gasholder is
undertaken or before overcoating as described in 32.5. Overcoating is normally carried out within three months of
the application of the build coat.
32.5
If required, one high build finish coat shall be applied (see Notes 2 and 3) to a OFT as specified in the
manufacturers' instructions (determined by means of a wet film thickness gauge as specified in clause 8).
The coating shall be allowed to dry for as long as possible and, in any case, for a minimum period of two weeks
prior to any operation of the gasholder.
32.6
Table SP A5a gives details of the relevant preparation and painting operations.
NOTES:
I.
Each coat of paint shall be of a contrasting colour.
2.
The finish coat on anyone
batch.
3.
On the crown of a gasholder, the number of coats in the paint system should be kept to a
minimum. Where the crown is prepared by grit blasting, only a two-coat system of a primer and
an MIO need be applied with the MIa acting as the finish coat. This MIa should be of a
light/silver grey colour to provide a reflective surface to minimise the crown temperature.
Reduced coating thickness will also improve flexibility and resistance to cracking.
4.
Non-slip paint, made by mixing dry soft-wood coarse grade sawdust to the top coat paint, should
be applied as an additional coat to access areas such as walkways, stairs and a one metre band
across the crown and around the inside of the crown perimeter.
5.
Where non-drying paint is to be removed prior to painting, the additional cost to remo\e the final
traces can be prohibitive. {;nder this circumstance, a white spirit-based primer should be used:
water-based primer is not recommended.
6.
Water-based paints require the movement of air to dry quickly, otherwise localised rust spotting
will occur. This problem can be overcome by replacing the primer coat of the water-based system
by a quick drying solvent-based primer.
lift or on the above ground tank shall be trom the same manufactured
- 26-
Painting IllspectioD Crade 3/2
J020 ( Rev 08/98 )
36
Appendix
A
PA10: SECTION 3
32.7
For surfaces which are predominantly immersed in water, one coat of moisture tolerant epoxy shall be
applied by broshing to a minimum Off of 100 J.1m(determined by means of a wet film thickness gauge as specified
in clause 8).
Where applicable, newly applied paint shall overlap onto the existing coating by 100 mm.
The manufacturers' recommendation in respect of drying times should be followed, but typically a minimum period
of two hours at IS 0 C should elapse before immersion into water.
Since it is necessary to restore adequate water seals at the end of each day, the paint system used should meet this
specific application requirement.
The area to be prepared and painted on cups and grips shall extend from the lowered water level to a point at least
ISOmm above the highest cup water working level around the full circumference of the gasholder.
The area for tank wind and water lines shall extend from the lowered water level to the tank top curb around the full
circumference of the tank.
Table SPASb gives details of the operations applicable to painting cups, grips and tank wind and water lines.
33.
HOLDER CUP WATER MANAGEMENT
33.1
Preparation and painting of cup and grip areas necessitates the removal of water from the cup. Reduced
water levels shall not remain during periods when the site is unattended and, in particular, overnight. The operations
associated with the preparation and painting of cup and grip wind and water lines shall be planned to ensure that an
adequate seal can be restored before leaving site each day.
33.1.1
During preparation and painting of cups and grips, water levels shall not be lowered to the point at which
gas can escape beneath the grip plate and lead to potentially serious results. A gas/air mixture may also be trapped
in the grip in which case a purging operation may be necessary before the gasholder is re-inflated.
33.2
The Engineer or the Engineer's nominated representative shall be present at all times to maintain
observation of water levels during painting operations and until adequate seals are restored.
33.3 To facilitate painting operations, special arrangements may need to be made in respect of the disposal of water
removed from the seals or tanks.
33.4
The Engineer may decide that tank water levels on multi-lift gasholders can be lowered sufficiently to
protect the wind and water line by intlating the gasholder into the outer lift, allowing surplus water to drain from the
tank to the tank overflow pipe level, and then lowering the gasholder into the inner lift.
33.4.1
If tank wind and water lines are to be protected on a single lift gasholder, water levels wiII need to be
lowered by controlled syphoning or pumping.
33.S
When the gasholder is in the required position, the Engineer shall arrange for the Contractor to remove
all sediment from the base of the cup.
33.6
If, after the removal of sediment from the base of the cup. the water level has not reduced sufficiently to
enable the preparation and painting of the cup and grip wind and water line, the Engineer shall aIT'dnge for further
water to be removed to a safe minimum le..eI.
33.7
Each cup shall be cleaned before commencement of painting of the next lift. This does not preclude the
possibility of additional cleaning being required during the progress ofthe painting operations.
33.8
If water blast cleaning is applied, it may be necessary to remove a further quantity of water from the cup
before proceeding with the next operation.
J020( Rev08/98)
Painting Inspection Grade 3/2
- 27 -
37
Appendix A
PA10: SECTION 3
TABLE SPA5b. Operations chart for maintenance painting of low pressure gasholde,.
grips, and steel tank wind and water lines)
Operatioa
Dumber
Subject of
operatioD
Period before aeIt
operatioD
MIDimuID
CommeDts
MuimuID
(cups,
Relevaat clauses la
PAlO
Sectioa 1
SectiOD3
1
Position gasholder
Preliminary
considerations
2
Protect
areas
defined
Preliminary
considerations
3
Remove sediment
ftom cups
Preliminary
considerations
33.
33.5
4
Lower water levels
Preliminary
considerations
5
Surface preparation
for painting
BS 7079 St3 as
minimum quality
5.9
33.
33.4.1
31.3
6
Clean all surfaces
Immediately prior
to
paint
application
5.9.6
32
7
Apply epoxy paint
(moisture tolerant
grade)
8
Restore water levels
2h
Full coat dry film
thickness 100 urn
minimum
Before
site
-30 -
?ainting
leaving
30.9
33.5
5.7
30.5
33.9
32.7
33
1020 ( Rev 08/98 )
Inspection
Grade 3/2
40
Appendix A
r----
PA10: SECTION 3
S"CIFIC PAINTINGAPPLICATION (SPA)
PAINTINGOF NON-FERROUS SURFACES
V SPAS 35.
3S.1
\
, ir'
0/:5
GENERAL
This SPA6 applies to the painting at site of the non-ferrous surfaces specified below~
)y
Newgalv..lzedsurraoe..
Y
Weathered galvanized surfaces.
/)
Previously painted galvanized surfaces.
/dJ'
Aluminium surfaces.
1r
~
r (/6
/
(
e)
Stainless steel.
f)
Pre-painted cladding ('Plastisol' cladding or equivalent).
g)
Glass reinforced plastics (GRP).
h)
Fusion bonded epoxy (FBE).
i)
Multi component liquids (MCL).
j)
Concrete.
(C
----)
\"'-
.
....
d't'
6<>'{-(~~('\~"
(;
j
V
\\
35.2
All these surfaces, especially aluminium and stainless steel shall be thoroughly cleaned in accordance
with 5.9.6 and then lightly abraded to provide an adequate key for the new paint system (see Table SPA6a).
35.3
It should be noted that items a) to d) are painted primarily to provide corrosion protection. The remainder
are painted for cosmetic purposes only.
36.
PREPARATION OF SURFACES FOR PAINTING
All forms of surface contamination and disbonded paint shall be removed. especially oil, grease, salts, dirt and dust.
This should be achieved by the use of detergent cleaners or emulsifYing agents followed by a clean water rinse.
36.2
The surface shall then be prepared as detailed in the requirements in Table SPA6a.
37.
APPLICATION OF PAINT TO PREPARED SURFACES
37.1
Compliant materials of the type listed in Table SP A6b shall be specified by the Engineer and applied in
accordance with clause 7.
37.2
SPA6c.
The choice of the generic paint system will determine the initial coat required and this is shown in Table
37.3
For items a) to d), the minimum dry film thickness of the full paint system shall be 120 jlm and shall
include a MID build coat. Water borne acrylic paint s)-stems do not require a separate primer as the MID will fulfil
this function.
37.4
Items e) to i) do not require a MID coat.
37.5
Coating systems shall normally be terminated with a full gloss finish of the same generic t)pe as the
preceding coats. Where an epoxy primer and intermediate coat have been applied, an epoxy acrylic or epoxy
polyester topcoat shall be specified.
In some situations, it may be required to terminate the paint system at the MID coat.
1020 ( Rev 08/98 )
-31-
Painting Inspection Crade 3/2
41
Appendix A
PA10: SECTION 3
SPA"
\f~
- Non-ferrous
au_eo
- surface
Non-ferrous surfaces
Surface preparatioD
Preferred OptioD
a)
Sweep
New galvanizing
abrasive
Comments
Fint option
Hand abrading
blast
\,\)
'
l'ul
\3> ..}
,
"
,,'
",.:.,!
C°'(-L~v \,(};,\"
preparation
eliminate the need for an 'Etch'
primer. An 'Etch' primer (Twash) shall be used where these
optionsare impractical
'It (f \J ),
J
b)
Weathered galvanizing
c)
Previously
d)
Stiff
brushing
painted Sweep
galvanizing
blast
Aluminium
Sweep
blast
The preferred and first options
bristle
-
abrasive Hand abrading
abrasive
Hand abrading
Weathered surface provides its
own key
Thin gauge aluminium should
not be blast cleaned and should
be treated with an etch primer
prior to the application of
intermediate and finish coats.
Chlorinated hydrocarbon solvent
shall not be used
e)
Stainless steel
f)
Pre-painted
(' Plastisol'
equivalent)
g)
cladding
cladding
or
Glass reinforced plastics
-
Sweep
blast
abrasive
Sweep
abrasive
Hand abrading
-
abrasive
Hand abrading
-
blast
Sweep
blast
Only aluminium oxide should be
used as the blasting medium
h)
Fusion bonded epoxy
Sweep
blast
abrasive
Hand abrading
-
i)
:'vlulticomponent liquids
Sweep
blast
abrasive
Hand abrading
-
j)
Concrete
[n
accordance
with
the
Manufacturers'
recommendations
- 32-
Painting Inspection
-
Surface abrasion may not be
required for new concrete, Old
paint should be removed if
required using scrabblers
J020 ( Rev 08/98 )
Grade 3/2
42
Appendix A
PA10: SECTION 3
\/n;;LE
. Point oys18m8
SPA6b- Non.ferro.. ourfo-
Com menu
Groups ofpalDt systeml
NOD-ferrous surraces
G3
Gl
Gl
-
a)
New galvanizing
Water-borne
acrylic
Epoxy
build
high
Alkyd
modified
alkyd
or
b)
Weathered galvanizing
Water-borne
acrylic
Epoxy
build
high
Alkyd
modified
alkyd
or
c)
Previously
galvanizing
Water-borne
acrylic
Epoxy
build
high
Alkyd
modified
alkyd
or
-
d)
Aluminium
Water-borne
acrylic
Epoxy
build
high
Alkyd
modified
alkyd
or
-
e)
Stainless steel
Water-borne
Epoxy
high
painted
(
acrylic
-
-
build
Any damaged galvanizing
shail be repaired with zinc
rich epoxy
t)
cladding
Pre-painted
('Plastisol' cladding or
equivalent)
Water-borne
acrylic
Moisture
cured
urethane
Alkyd
modified
alkyd
or
Any
damaged
areas
where the steel substrate
is exposed, should be
repaired in accordance
with SPA}
g)
Glass reinforced plastics
Water-borne
acrylic
Moisture
cured
urethane
Alkyd
modified
alkyd
or
-
h)
Fusion bonded epoxy
Water-borne
acrylic
Moisture
cured
urethane
Alkyd
modified
alkyd
or
-
i)
Multi component liquids
or
-
or
For new concrete a scaler
coat may be required
j)
Concrete
Water-borne
Moisture
Alkyd
acrylic
cured
urethane
modified
alkyd
Water-bome
acrylic
Moisture
cured
urethane
Alkyd
modified
alkyd
NOTE Other compliant systems which meet the requirements
consideration by Transco.
- 33 -
J020 ( Rev 08/98 )
Painting Inspection Grade 3/2
of PA9 may be proposed as a variant for
43
Appendix A
PA10: SECTION 3
VkE
SPA6c
- Non-ferrous
surfac..
- PaInt syotoms -Initial coat
Options
Non-ferrous sureaees
Gl
G1
GJ
a)
New galvanizing
Water-borne acrylic
micaceous iron oxide
(65 um minimum)
Pigmented high build
epoxy (65 um
minimum)
Alkyd or modified
alkyd (40 um
minimum)
b)
Weathered galvanizing
Water-borne acrylic
micaceous iron oxide
(65 um minimum)
Pigmented high build
epoxy (65 um
minimum)
Alkyd or modified
alkyd (40 um
minimum)
c)
Previously
galvanizing
Water-borne acrylic
micaceous iron oxide
(65 um minimum)
Pigmented high build
epoxy (65 um
minimum)
Alkyd or modified
alkyd (40 um
minimum)
d)
Aluminium
Water-borne acrylic
micaceous iron oxide
(65 um minimum)
Pigmented high build
epoxy (65 um
minimum)
Alkyd or modified
alkyd (40 um
minimum)
e)
Stainless steel
-
painted
Water-borne acrylic
Chloride fTeeepoxy
micaceous iron oxide
(45 um minimum)
high build (65 um
minimum)
f)
cladding
Pre-painted
(plastisol cladding)
Water-borne acrylic
micaceous iron oxide
(45 um minimum)
Compatible moisture
cured urethane (25 um
minimum)
Compatible alkyd or
modified alkyd (40 um
minimum)
g)
Glass reinforced plastics
Water-borne acrylic
micaceous iron oxide
(45 um minimum)
Compatible moisture
cured urethane (25 um
minimum)
Compatible alkyd or
modified alkyd (40 um
minimum)
h)
Fusion bonded epoxy
Water-borne acrylic
micaceous iron oxide
(45 um minimum)
Compatible moisture
cured urethane (25 um
minimum)
Compatible alkyd or
modified alkyd (40 urn
minimum)
i)
Multi component liquids
Water-borne acrylic
micaceous iron oxide
(45 urn minimum)
Compatible moisture
cured urethane (25 um
minimum)
Compatible alkyd or
modified alkyd (40 um
minimum)
}
{Single pack
acrylic}
{water-borne
}
{primer (30 um
}
{minimum)
Moisture cured
urethane sealer
Compatible alkyd or
modified alkyd (40 um
minimum)
j)
Walls
Concrete
Floors
J020 ( Rev 08,98 )
- 34-
Painting Inspection
Grade 3/2
44
Appendix A
PA10
APPENDIX A
LIST OF REFERENCES
This specification makes reference to the documents listed below (see clause 2).
It shall be the Contractor's responsibility
to acquire all relevant standards applicable to the particular work involved.
Copies of the relevant Transco specifications
will normally be supplied by Transco at the tender stage.
Statutes and Regulations
No. 1145
1948-
The Building (Safety, Health and Welfare) Regulations
No. 1580
1961-
The Construction (General Provisions) Regulations
No. 1581
1961-
The Construction (Lifting Operations) Regulations
1989-
The Construction (Head Protection) Regulations
No.1248 1980-
Control of Lead at Work Regulations
1963-
The Contracts of Employment Act
1961-
The Factories Act
1947-
The Fire Services Act
1963-
The Offices, Shops and Railway Premises Act
1974-
Health and Safety at Work etc. Act
19901991-
Environmental Protection Act
1974-
Control of Pollution Act (1974) & Amendment (1989)
1980-
Control of Pollution Special Waste Regulations (Amendment
1988-
Collection and Disposal of Waste Regulations
1988-
Control of Substances Hazardous to Health Regulations
1989-
Environmental Protection Act
- EPA - (Duty
of Care Regulations)
Noise at Work Regulations
Management of Health & Safety at Work Regulations
Manhandling Operations Regulations
1992 -
Provision and Use of Work Equipment Regulations
-
Personal Protective Equipment at Work Regulations
1992
1994 1992
Workplace (Health, Safety & Welfare) Regulations
Certification, Packaging and Labelling (CPL) Regulations (for Carriage of
Dangerous Goods by Road and Rail)
1020 ( Rev 08/98 )
Painting Inspection Grade 3/2
1988)
-35 45
Appendix A
PA10
1993
-
Chemicals Hazard Information and Packaging (CHIP) Regulations
Water Resources Act
International Organisation
for Standardlsatlon
Preparation
Products
ISO 7167
(ISO) standard
of steel substances before application of paint and related
European Standards
BS EN 345, 355,
358/361 - 365
Specifications
BS EN 22063
Metallic and other inorganic coatings. Thermal spraying. Zinc,
aluminium and their alloys
for industrial safety belts, harnesses and safety lanyards
British Standards
BS 1129
Specification for portable timber ladders, steps, trestles and
lightweight stagings
BS 1139
Metal scaffolding
BS 2569
Specification for sprayed metal coatings:
Part 2 protection of iron and steel against corrosion and oxidation at
elevated temperatures
BS 2830
Specification for suspended safety chairs and cradles for use in the
construction industry
BS 2842
Specification for whirling hygrometer
BS 3900
Methods of test for paints:
Part C5 Determination of film thickness
BS 4800
Schedule of paint colours for building purposes
BS 5493
Code of practice for protective coating or iron and steel structures
against corrosion
BS 5973
Code of practice for access and working scaffolds and special scaffold
structures in steel
BS 7079
Preparation of steel substrates before application of paints and related
products:
Part 0 Introduction
Part A Visual assessment of surface cleanliness
Part Al Specification for rust grades and preparation grades of
uncoated steel substrates and of steel substrates after
overall removal of previous coatings
Part AI: Supplement 1 Representative photographic examples
of the change of appearance imparted to steel when
blast-cleaned with different abrasives
-
-
-
-
-
-
-
1020(
-36-
Painting Inspection
Grade 3/2
46
Rev 08/98 )
Appendix A
PA10
Institution of Gas Englnee... (IGE) Recommendatlons*
.These Recommendations
are available from 21 Portland Place. London WIN 3AF.
IGE/SRl3
Electrical equipment in gas production, transmission,
distribution
storage and
IGE/SRl4
Low pressure gasholders storing lighter-than-air
10E/SRlS
Opening of gas works plant and working in confined spaces
10E/SRl12
Handling of methanol
10E/SRl21
Blast cleaning operations
IOEfID/6
Handling, transport and storage of steel pipes, bends, tees, valves and
fittings
gases
Transco specifications
011
Notes for guidance on the issue of Permits to Work
CWS
Code of Practice for the selection and application offield applied
external pipework coatings
PA9
Technical specification for paint properties and performances
requirements
DlS 3.1
Engineering Procedures
-Safety -Health
DlS 3.5
Engineering Procedures
- Health,
and Safety at Works
Safety and Environmental
Protection
Other Transco publications
Handbook on Safe Handling of Substances in Use with,," the Gas
Industry
Computerised
(CISSUB).
1020 ( Rev 08/98 )
Painting Inspection Grade 3/2
Information System for Substances in Use in Transco
- 37-
47
Appendix A