Volume-II of IV - GAIL

- One coat of F-9 shall be applied wherever damaged was observed
on pre-erection/ pre-fabrication/ shop primer of inorganic zinc
silicate coating (F-9) shall not be applied if damaged area is not
more than 5 x 5 cm.
5.10 PAINT APPLICATION
5.10.1 Shop priming/ pre-erection priming with F9 of F12 shall be done only on
blasted surface.
5.10.2 Shop priming/ pre-erection priming with F-9 or F-12 shall be done only
with airless spray.
5.10.3 For large flat surface field painting shall be done by airless spray
otherwise brush can be used.
5.11 Documentation.
1. A written quality plan with procedure for qualification trials and for the
actual work.
2. Daily progress report with dedtails of weather condition, particular of
application no of coats and type of materials applied, anomolies, progress
of work versus programme.
3. Result of measurement of temperature relative humidity, surface profile,
film thickness, holiday detection, adhesion tests with signature of
appropriate authority.
4. Particular of surface preparation and paint application during trials and
during the work.
5. Details of non-compliance, rejects and repairs.
6. Type of testing equipments and calibration.
7. Code and batch numbers of paint material used.
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