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Virginia Administrative Code
Title 16. Labor and Employment
Agency 25. Safety and Health Codes Board
Chapter 50. Boiler and Pressure Vessel Regulations
1/23/2020

16VAC25-50-460. 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 five psig.

D. The blowoff piping and fittings between the boiler and the blowoff tank shall comply with the current edition of the ASME Code, Section I and ASME B31.1.

E. All materials used in the fabrication of boiler blowoff equipment shall comply with the current edition of the ASME Code, Section II.

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.

Statutory Authority

§ 40.1-51.6 of the Code of Virginia.

Historical Notes

Derived from VR425-01-75 § 4.8, eff. July 1, 1974; amended, eff. November 1, 1978; July 1, 1991; September 1, 1993; Volume 35, Issue 2, eff. November 1, 2018.

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