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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 32 OF 49<br />

TABLE 14.0<br />

COATING SYSTEMS FOR EXTERNAL SIDE OF UNDERGROUND<br />

CARBON STEEL PLANT PIPING AND UNDERGROUND VESSELS<br />

Sl.<br />

No.<br />

Design<br />

Temp. in<br />

o C<br />

Surface<br />

Preparation<br />

&<br />

Shop Primer<br />

Surface<br />

Preparation &<br />

Primer<br />

14.1 Underground carbon steel plant piping<br />

Coating system (Field)<br />

Finish Coat<br />

Total Final<br />

DFT<br />

in Microns<br />

(min.)<br />

Remarks<br />

14.1.1 25 to 65 ---<br />

SSPC-SP-10;<br />

1 coat of synthetic<br />

fast drying primer<br />

25 @µ DFT/ coat<br />

1 layer of coaltar tape<br />

coating @ 2mm +1<br />

coat of synthetic fast<br />

drying primer 25 @µ<br />

DFT/ coat + 1 layer of<br />

coal tar tape coating @<br />

2mm /layer as per<br />

<strong>EIL</strong> Standard<br />

Specification .No<br />

6-79-0011<br />

4 mm<br />

The primer<br />

DFT is not<br />

measurable.<br />

Reconciliation<br />

primer shall<br />

be done by<br />

coverage of<br />

maximum 10<br />

sq.m/litre<br />

14.2.1 66 to 150 ---<br />

14.2.2 151 to 400 ---<br />

SSPC-SP-10;<br />

1 coat of F-17<br />

primer @ 125µ<br />

DFT/ coat<br />

SSPC-SP-10;<br />

1 coat of F-16<br />

primer @ 125µ<br />

DFT/ coat<br />

14.3 External side of un-insulated underground storage vessels<br />

SSPC-SP-10;<br />

1 coat of F-17<br />

intermediate coat @<br />

125µ DFT/coat + 1<br />

coat of F-17 finish<br />

coat @125µ DFT/ coat<br />

1 coat of F-16 finish<br />

coat @125µ DFT/ coat<br />

375 -<br />

250 -<br />

14.3.1 -40 to 80<br />

1 coat of F-9<br />

@<br />

65-75µ DFT/<br />

coat<br />

---<br />

3 coats of F-7 @ 100µ<br />

DFT/coat<br />

365-375 -<br />

14.3.2 81 to 150<br />

SSPC-SP-10;<br />

1 coat of F-17<br />

primer @<br />

125µ DFT/<br />

coat<br />

---<br />

1 coat of F-17<br />

intermediate coat @<br />

125µ DFT/coat + 1<br />

coat of F-17 finish<br />

coat @125µ DFT/ coat<br />

375 -<br />

SSPC-SP-10;<br />

14.3.3 151 to 400<br />

1 coat of F-16<br />

primer @<br />

125µ DFT/<br />

coat<br />

---<br />

1 coat of F-16 finish<br />

coat @125µ DFT/ coat<br />

250 -<br />

Format No. 8-00-0001-F1 Rev. 0<br />

Copyright <strong>EIL</strong> – All rights reserved<br />

Page 271 of 291

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