220 CMR, § 109.11

Current through Register 1533, October 25, 2024
Section 109.11 - Pressure Testing
(1) The operator shall use a test procedure that will ensure discovery of all hazardous leaks in the segment of pipeline being tested.
(2) All sections of the pipeline shall be successfully hydrostatically or pneumatically tested to at least 1.5 times the MAOP for at least eight hours before being placed into service. Any leaks found during the test shall be repaired or removed before the pipeline is placed into service. When pneumatic testing is used for aboveground piping, consideration shall be given to protecting the public and personnel or providing mitigating measures (e.g., blast mats, barriers, temporary burial of the pipe) during the test.
(3) Each joint used to tie in a test segment of pipeline is exempt from the specific test requirement of 220 CMR 109.11(2). However, it must be leak tested at no less than its normal operating pressure.
(4) Each pressure test conducted to comply with 220 CMR 109.11(2) shall be documented with a calibrated recording instrument.
(5) All pressure testing records and pressure charts shall be maintained for the life of the pipeline. The test information shall comply with 49 CFR 192.517.

220 CMR, § 109.11

Amended by Mass Register Issue 1432, eff. 12/11/2020.