Michigan Administrative Code
Department - Licensing and Regulatory Affairs
Public Service Commission
Michigan Gas Safety Standards
Part 3 - ADDITIONAL MINIMUM SAFETY STANDARDS
Section R. 460.20312 - Test requirements; service lines other than plastic

Rule 312. The requirements contained in 49 C.F.R.§ 192.511(b) and (c), which are adopted by reference in R 460.20606 are superseded by the requirement that an operator shall test all service lines, other than plastic service lines, to a minimum pressure of 90 psig, but not less than 150% of the maximum allowable operating pressure, for not less than 10 minutes. Each segment of a steel service line stressed to 20% or more of specified minimum yield strength must still be tested in accordance with 49 C.F.R. § 192.507, which is adopted by reference in R 460.20606.

An obvious error in R 460.20312 was corrected at the request of the promulgating agency, pursuant to Section 56 of 1969 PA 306, as amended by 2000 PA 262, MCL 24.256. The rule containing the error was published in Michigan Register, 2019 MR 1. The memorandum requesting the correction was published in Michigan Register, 2019 MR 1