Minnesota Legislature
Office of the Revisor of Statutes
Minnesota Administrative Rules
5230.0285 CHAPTER II, DESIGN.
Subpart 1.
Parts 1 and 2.
Notwithstanding anything to the contrary in ASME B31.1, the following portions of chapter II of ASME B31.1 are recommended rather than mandatory: Part 1, Conditions and Criteria; and Part 2, Pressure Design of Piping Components. The department shall not enforce compliance with Part 1 or Part 2 of chapter II of ASME B31.1
Subp. 2.
Section 122.5.1.
ASME B31.1, section 122.5.1 is amended by adding the following language at the end:
It is mandatory that a pressure gauge be installed on the low-pressure side of a reducing valve. Where two or more reducing valves are installed in series, a pressure gauge shall be installed on the low-pressure side of each pressure-reducing valve.
Subp. 6.
Section 122.11.2.
ASME B31.1, section 122.11.2 is amended by adding the following language at the end:
The discharge of a high pressure trap shall not empty into a low-pressure receiver unless first run through a flash tank or there is an ample sized vent so a trap failure could not increase the pressure in low-pressure receiver tank.
Statutory Authority:
MS s 326B.925
History:
34 SR 145
Published Electronically:
September 16, 2009
Official Publication of the State of Minnesota
Revisor of Statutes