Section R. 29.2126 - Methods of release detection for pipingRule 26. Section 280.44 is amended to read as follows:
Section 280.44. Each method of release detection for piping used to meet the requirements of section 280.41 must be conducted in accordance with all of the following provisions:
(a) Automatic line leak detectors. A method that alerts the operator to the presence of a leak by restricting or shutting off the flow of regulated substances through piping or triggering an audible or visual alarm may be used only if the method detects leaks of 3 gallons per hour at 10 pounds per square inch line pressure within 1 hour. An annual test of the operation of the leak detector shall be conducted in accordance with subdivision 280.40(a)(3).(b) With respect to line tightness testing, the following provisions: (1) Line tightness testing must be capable of detecting a 0.1 gallons per hour leak rate at 1 1/2 times the operating pressure.(2) Secondary containment piping must be tested by a positive pressure of not less than 5 psig for a minimum of 1 hour.(3) A periodic test of piping may be conducted only if it can detect a 0.1 gallon per hour leak rate at 1 1/2 times the operating pressure.(c) Applicable tank methods. Except as described in subsection 280.41(a), any of the methods in section 280.43(e) to (i) may be used if they are designed to detect a release from any portion of the underground piping that routinely contains regulated substances.Mich. Admin. Code R. 29.2126
1998-2000 AACS; 2018 MR 21, Eff. 11/14/2018