A1A - EIL Tender portal
A1A - EIL Tender portal
A1A - EIL Tender portal
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JOB SPECIFICATION<br />
FOR SURFACE PREPARATION<br />
AND PROTECTIVE COATING<br />
JOB SPECIFICATION No.<br />
A307-000-06-42-PLS-01<br />
Rev.0<br />
PAGE 45 OF 49<br />
shall be as per SSPC-DA 2. Measured DFT shall be within + 10% of the dry film<br />
thickness, specified in the specifications.<br />
2) Adhesion of the primer to the steel substrate and intercoat adhesion of the subsequent<br />
coat(s) after curing for at least a week after application of the topcoat shall be examined by<br />
a knife test in accordance with ASTM D 6677. For the knife test, if the rating is better than<br />
8, the adhesion is considered acceptable. The adhesion is destructive and tested areas shall<br />
be repaired afterward using the spot repair procedure. Alternatively, the applicator may<br />
perform the adhesion test on a steel coupon coated using the same surface preparation and<br />
coating application procedure as the work piece. Adhesion testing shall be carried out for<br />
each component at least once per 200 m 2 (2000 ft 2 ) of coated surface.<br />
3) Holiday testing shall be conducted in accordance with NACE SP 0188. For immersion<br />
services, 100% of coated area shall be inspected for holidays. For atmospheric exposure,<br />
10% of coated area which must include weld seams, corners and edges to be holiday<br />
tested. Voltage at which test is to be carried out will depend upon DFT of coating being<br />
tested and shall be as per NACE SP 0188. Any holiday is unacceptable and should be<br />
marked and repaired immediately.<br />
22.10 The contractor shall arrange for spot checking of paint materials for Specific gravity, glow<br />
time (ford cup) and spreading rate.<br />
22.11 Final Inspection of coating system<br />
A final inspection shall be conducted prior to the acceptance of the work. The coating<br />
contractor and the facility owner shall both be present and they shall sign an agreed inspection<br />
report. Such reports shall include:<br />
General<br />
- Names of the coating contractor and the responsible personnel<br />
- Dates when work was performed<br />
Coating Materials<br />
- Information on coating materials being applied<br />
- Condition of coating materials received<br />
Environmental Conditions<br />
- Weather and ambient conditions<br />
- Coating periods<br />
Surface Preparation<br />
- Condition of surface before preparation<br />
- Tools and methods used to prepare surface<br />
- Condition of surface after preparation<br />
Coating Application<br />
- Equipment used<br />
- Mixing procedure prior to application<br />
- Coating application techniques used<br />
Testing<br />
Format No. 8-00-0001-F1 Rev. 0<br />
Copyright <strong>EIL</strong> – All rights reserved<br />
Page 284 of 291
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