§ 70.79.080. Exemptions from chapter
This chapter shall not apply to the following boilers, unfired pressure vessels and domestic hot water tanks:
(1) Boilers and unfired pressure vessels under federal regulation or operated by any railroad subject to the provisions of the interstate commerce act;
(2) Unfired pressure vessels meeting the requirements of the interstate commerce commission for shipment of liquids or gases under pressure;
(3) Air tanks located on vehicles operating under the rules of other state authorities and used for carrying passengers, or freight;
(4) Air tanks installed on the right-of-way of railroads and used directly in the operation of trains;
(5) Unfired pressure vessels having a volume of five cubic feet or less when not located in places of public assembly;
(6) Unfired pressure vessels designed for a pressure not exceeding fifteen pounds per square inch gauge;
(7) Tanks used in connection with heating water for domestic and/or residential purposes;
(8) Boilers and unfired pressure vessels in cities having ordinances which are enforced and which have requirements equal to or higher than those provided for under this chapter, covering the installation, operation, maintenance and inspection of boilers and unfired pressure vessels;
(9) Tanks containing water with no air cushion and no direct source of energy that operate at a temperature of one hundred thirty degrees Fahrenheit or less;
(10) Electric boilers:
(a) Having a tank volume of not more than one and one-half cubic feet;
(b) Having a maximum allowable working pressure of one hundred pounds per square inch or less, with a pressure relief system to prevent excess pressure; and
(c) If constructed after June 10, 1994, constructed to American society of mechanical engineers code, or approved or otherwise certified by a nationally recognized or recognized foreign testing laboratory or construction code, including but not limited to Underwriters Laboratories, Edison Testing Laboratory, or Instituto Superiore Per La Prevenzione E La Sicurezza Del Lavoro;
(11) Electrical switchgear and control apparatus that have no external source of energy to maintain pressure and are located in restricted access areas under the control of an electric utility;
(12) Regardless of location, unfired pressure vessels and hot water heaters less than one and one-half cubic feet (11.25 gallons) in volume with a safety valve setting of one hundred fifty pounds per square inch gauge (psig) or less, or less than six inches in diameter and less than five cubic feet (37.5 gallons) in volume with a safety valve set at any pressure, or less than fifteen psig containing substances other than steam, lethal substances, or liquids with low flash points.
[2005 c 22 § 1; 1999 c 183 § 3; 1996 c 72 § 1; 1994 c 64 § 2; 1986 c 97 § 1; 1951 c 32 § 8.]
Notes:
Finding -- Intent -- 1994 c 64: See note following RCW 70.79.095.
Sections: Previous 70.79.010 70.79.020 70.79.030 70.79.040 70.79.050 70.79.060 70.79.070 70.79.080 70.79.090 70.79.095 70.79.100 70.79.110 70.79.120 70.79.130 70.79.140 Next
Last modified: April 7, 2009