 |
Virginia Administrative Code (Last Updated: January 10, 2017) |
 |
Title 16. Labor and Employment |
|
Agency 25. Safety and Health Codes Board |
|
Chapter 50. Boiler and Pressure Vessel Regulations |
Section 460. Blowoff equipment
-
A. The blowdown from a boiler or boilers that enters a sewer system or blowdown which is considered a hazard to life or property shall pass through blowoff equipment that will reduce pressure and temperature as required below.
B. The temperature of the water leaving the blowoff equipment shall not exceed 140°F.
C. The pressure of the blowdown leaving any type of blowoff equipment shall not exceed 5.0 psig.
D. The blowoff piping and fittings between the boiler and the blowoff tank shall comply with Section I of the ASME code and ANSI B31.1.
E. All materials used in the fabrication of boiler blowoff equipment shall comply with Section II of the ASME code.
F. All blowoff equipment shall be fitted with openings to facilitate cleaning and inspection.
G. Blowoff equipment which conforms to the provisions set forth in the National Board publication, "Boiler Blowoff Equipment", shall meet the requirements of this section.
Historical Notes
Derived from VR425-01-75 § 4.8, eff. July 1, 1974; amended, eff. November 1, 1978; July 1, 1991; September 1, 1993.