Volume-II of IV - GAIL

4.1 General
a) The application procedure shall be in accordance with
manufacturer’s instruction and the minimum requirements required
below whichever are the most stringent and shall be demonstrated
to and approved by the Owner.
b) Contractor shall provide and maintain mobile facilities which
contains all necessary tools, propane torches, epoxy primer pumps,
silicon rollers, testing instruments, equipment, and spares for
cleaning, coating, repairs, inspection and testing.
c) Contractor shall furnish sufficient number of the following
equipment and the required spares as a minimum for inspection
and testing purpose for each crew :
- Fully automatic full circle adjustable holiday detector with
audio and visual output signal for inspection of coating.
- Portable Tensile Strength Tester
- Digital Thermometer
- Solid state digital thickness gauge for measuring thickness
of joint coating.
4.2 Pipe Surface Preparation
a) The Contractor shall thoroughly clean and dry the joint surface by
power tool cleaning in accordance with SSPC-SP1. The complete
procedure and details of equipment used shall be prepared by the
Contractor for Owner’s approval prior to commencement of joint
coating work.
b) Prior to cleaning operation, Contractor shall visually examine the
joint surface area and shall ensure that all defects, flats and other
damages have been repaired or removed.
c) Where oil, grease or other materials detrimental to the finished
coating is present, it shall be removed with a continuous removal
solvents cleaning system to remove completely all such materials in
accordance with SSPC-SP1.
d) The standard of finish for cleaned pipe surface shall conform to SA
2½ of Swedish Standard SIS-055900 latest edition. The degree of
preparation required to obtain an end product that fulfil the
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