Abstract： AS 3862:2002 pdf download.External fusion-bonded epoxy coating for steel pipes. 4.1 REPAIRS TO COATINGS IN TIlE NuLL The following applies to repairs to pipe coating in the coating mill: (a) All holidays defined in Clause 1.3 detected durin...

AS 3862:2002 pdf download.External fusion-bonded epoxy coating for steel pipes.

4.1 REPAIRS TO COATINGS IN TIlE NuLL

The following applies to repairs to pipe coating in the coating mill:

(a) All holidays defined in Clause 1.3 detected during final bench testing and in the course of handling the coated pipe in the

pipe mill yard shall be repaired in accordance with this Standard. using materials qualified in accordance with Clause 6.2.3 and

Table Al, Appendix A.

(b) The maximum single area to be repaired shall be 0.01 m.

(c) The maximum total area to be repaired on one joined pipe shall be 0.1% of the total external surface area of the coated length of pipe.

(d) For any individual pipe length, the number of holidays shall not exceed the rate of I per metre of pipe length.

(e) There shall be no more than 50 repairs on any 10 consecutise pipes. (I’) Repairs shall be carried out in accordance with

Clause 4.3.

(g) If any of the criteria described in Item (b). Cc) or (d) is exceeded, the length of pipe shall be stripped and recoated.

(h) The repaired area shall be subject to a holiday lest in accordance with AS 3g94.l.

4.2 REPAIRS TO FIElD JOINTS AM) ADJACENT AREAS

Field joints and adjacent areas shall be subject to repairs as follows:

(a) All holidays dctincd in Clause 3 detected on coated fleld joints shall be repaired in accordance with Clause 7.3. Visible

coaling dis.continuitics not detected electrically shall also be repaired in accordance with this Standard.

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