NFPA Standard 2001 Edition 2015, which became effective Jan. 1, 2015, is now available from the NFPA website. Several additions and changes to the Standard have occurred that may impact those involved with clean agent systems.
The first addition to NFPA 2001 2015 edition is in section 4.1.2. This addition makes it clear that clean agent used in systems for initial fill and recharge must meet the quality requirements set forth in NFPA 2001, and each batch of clean agent – both recycled and newly manufactured – must be tested and certified to these quality specifications.
Annex material references the new Recycling Code of Practice developed by HARC. This RCOP has been endorsed by several trade associations including the FSSA. A copy can be downloaded here.
PIPE AND FITTINGS
Class 150 pipe fittings are specifically prohibited without exception.
Annex A.126.96.36.199 continues to reference the FSSA Pipe Design Handbook as the guide to be used in determining minimum pipe wall thickness. Specifically, it states that when discharge times are less than 60 minutes, the yield stress factors (SE) published in ANSI B31.1 may be increased by 20 percent when used to calculate minimum pipe wall thickness.
Table A.188.8.131.52(a), which lists acceptable fittings for use with various types of clean agent, has been updated. In particular, required pressure ratings for flanges have changed.
An editorial change makes it clear that 85 percent of the adjusted minimum design concentration (AMDC) must be held at the highest level of protected content for a minimum of 10 minutes or for a time period sufficient to allow response by trained personnel.
The acceptance testing required by the standard must be documented in an acceptance test report; this report is to be kept by the owner of the system for the life of the system.
While a sample test report is included in the Annex, the Standard makes it clear that it is not necessary to use the sample test form included in the Standard. In lieu of the sample form, an alternate form provided by the installer or system manufacturer or others can be used.