Section SPS 341.45 - Noncode vessels(1) EXEMPTED VESSELS. The following vessels are not required to be constructed and installed in accordance with the ASME code: (a) Water heaters and hot-water storage tanks, provided water temperatures do not exceed 210°F. Note: See chapter SPS 384 for requirements relating to water heaters and hot-water storage tanks.
(b) Vessels for containing water under pressure for domestic supply, including those having an air space for expansion.(c) Pressure vessels used for the processing or storage of water at water temperatures not exceeding 210°F. These vessels may contain a steam or hot water coil or heat exchanger, provided the steam is at or below a pressure of 15 psig and the hot water is at or below a pressure of 160 psig and a temperature of 250°F.(d) Pressure vessels used for water conditioning and filtration.(e) Pressure vessels used in processing and storing of fermented beverages at temperatures not exceeding 140°F.(2) VESSEL IDENTIFICATION. The vessels listed in sub. (1) (b) to (e) shall be identified with the manufacturer's name, a serial number, the allowable working pressure, and the year fabricated.(3) PRESSURE RELIEF REQUIREMENTS. (a) Except as provided in par. (b), the vessels listed in sub. (1) shall meet the pressure relief device requirements of the ASME code. Note: Pressure relief devices are not required on each vessel of a system if the system is properly equipped with pressure relief devices. For systems containing unheated water storage tanks, a pressure relief device is needed when the pressure-inducing source is capable of imposing a pressure greater than the design pressure of the tanks.
(b) Water heaters and hot-water storage tanks shall be equipped with combination temperature and pressure relief valves in accordance with chs. SPS 381 to 387.Wis. Admin. Code Department of Safety and Professional Services SPS 341.45
Cr. Register, February, 1988, No. 386, eff. 3-1-88; r. and recr. (1) (a) and(3) (b), Register, December, 1992, No. 444, eff. 1-1-93; correction in (3) (b) made under s. 13.93(2m) (b) 7, Stats., Register, March, 1998, No. 507; am. (1) (intro.) and (3) (a), Register, February, 2000, No. 530, eff. 3-1-00; correction in (3) (b) made under s. 13.92(4) (b) 7, Stats., Register December 2011 No. 672; CR 11-047: am. (1) (a) to (d), (3) (b) Register May 2012 No. 677, eff. 6-1-12.