Section SPS 345.509 - Design and construction(1) MATERIALS. This is an additional, department exception to the requirements in ANSI/ASHRAE standard 15 Section 9.1.5: Discharge piping for mechanical refrigeration safety relief valves that discharges outside a building may consist of plastic materials and joint primers and adhesives which the department has approved specifically for this purpose, provided all of the following conditions are met: (a) The design pressure in the refrigeration system does not exceed 15 psi.(b) The refrigeration system does not contain a refrigerant other than Group A1 or B1.(c) The piping is noncombustible when tested in accordance with ASTM E 136 or is self-extinguishing with a rating of 5V-A, V-O or V-1 when tested in accordance with UL 94. Note: As of September 1, 2010, the plastic materials approved under this subsection include polyvinyl chloride piping.
(2)ASME B31.3 PIPING. This is a department informational note to be used under ANSI/ASHRAE standard 15 section 9.10.1:Wis. Admin. Code Department of Safety and Professional Services SPS 345.509
CR 10-011: cr. Register August 2010 No. 656, eff. 9-1-10. Process piping complying with ASME B31.3 is an example of piping that complies with this section by being appropriately listed rather than by complying with ASME B31.5.