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JOB SPECIFICATION
FOR SURFACE PREPARATION
AND PROTECTIVE COATING
JOB SPECIFICATION No.
A307-000-06-42-PLS-01
Rev.0
PAGE 35 OF 49
TABLE 17.0
COATING SYSTEM (INTERNAL PROTECTION) FOR GALVANIZED OR
NON FERROUS OR STAINLESS STEEL/ DUPLEX STAINLESS STEEL
COMPONENTS OF COOLERS/ CONDENSERS FOR FRESH WATER
SERVICE
Sl.
No.
Design
Temp. in o C
Surface Preparation
& Pre-erection/Shop
Primer
17.1 Up to 80 Sweep Blasting
Coating System
(Post-erection / Field)
Primer
1 coat of F-15 @
80µ DFT/coat;
17.2 80 to 140 Sweep Blasting ---
Finish paint
1 coat of F-15 @
80µ DFT/coat;
1 coat of Glass
Fibre Reinforced
Novolac epoxy of
1.5 mm DFT
Total Final
DFT
in Microns
(min.)
Remarks
160 -
1500 -
18.0 STORAGE
18.1 All paints and painting materials shall be stored only in rooms to be arranged by contractor
and approved by Engineer-in-charge for the purpose. All necessary precautions shall be
taken to prevent fire. The storage building shall preferably be separate from adjacent
building. A signboard bearing the word “PAINT STORAGE – NO NAKED LIGHT –
HIGHLY INFLAMABLE” shall be clearly displayed outside. Manufacturer’s
recommendation shall be followed for storage of paint materials.
19.0 COLOUR CODE
The following colour coding system shall be followed. However alternate colour coding may
also be followed as per Owner’s colour coding practice/scheme.
19.1 IDENTIFICATION
The system of colour coding consists of a ground colour and secondary colour bands
superimposed over the ground colour. The ground colour identifies the basic nature of the
service and secondary colour band over the ground colour distinguishes the particular
service. The ground colour shall be applied over the entire length of the un-insulated pipes.
For insulated lines ground colour shall be provided as per specified length and interval to
identify the basic nature of service and secondary colour bands to be painted on these
specified length to identify the particular service. Above colour code is applicable for both
unit and offsite pipelines.
Format No. 8-00-0001-F1 Rev. 0
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