- 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.