Rule 412. In addition to the requirements set forth in 49 C.F.R.§192.505, which is adopted by reference in R 460.20606, an operator of pipeline facilities used in the transportation of sour gas shall pressure test in place all sour gas pipelines to not less than 2 times their maximum allowable operating pressure (MAOP) for not less than 8 hours.
Mich. Admin. Code R. 460.20412