Proposed Revisions to NSF 61 Section 5

December 3, 2009

NSF 61 Section 5

Covers tank and pipe coatings for:

Field Applied

Factory Applied

Coating Requirements

– Pipe and Fittings Sec 4 (17 day exposure)– Field applied Immediate return to service pipe coatings

Sec 5 (1 day)– Other pipe and tank coatings Sec 5 (5 day)

– Pipes with factory applied coatings are tested to 17 day exposure.

– Coatings that are intended for application to pipe in the factory are tested to 5 day protocol.

– Factory applied pipe only coatings should be tested to 17 day protocol.

NSF 61 Section 5

• Additional minor editorial revisions are also suggested.

• Replace “or” with “and” in definition of immediate return to service coatings.

NSF 61 Section 5

• Allow use of the disinfection methods cited in AWWA C651 for disinfection of pipe coatings in Section 5.5.4.

NSF 61 Section 5

• Section 5.5.5.4 should be revised to reference the conditioning and exposure protocols for pipe only coatings.

NSF 61 Section 5

• Section 5.8.1 contains outdated references to the MALs. This should be revised to reference TACs and SPACs for flowing/static conditions.

NSF 61 Section 5

• Table 5.7 has been proposed for listing surface area to volume ratios for pipe based on nominal diameter for convenience in applying normalization criteria.