Topic: Bellingham - Pipeline Technology (Relief Valve)

NTSB Recommendation: Develop and issue guidance to pipeline operators on specific testing procedures that can be used to approximate actual operations during the commissioning of a new pumping station or the installation of a new relief valve and determine during annual tests whether a relief valve is functioning properly.

PHMSA Action:

Latest PHMSA Response: PHMSA letter to NTSB 11-10-05.

NTSB Status: CAA; 05-03-06

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