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Safety Recommendation Details

Safety Recommendation P-78-002
Details
Synopsis: ON JULY 20, 1977, A 12-INCH PROPANE PIPELINE, OWNED BY THE CONSOLIDATED GAS SUPPLY CORPORATION, RUPTURED NEAR THE TOWN OF RUFF CREEK, PENNSYLVANIA. THE LIQUID ESCAPED FROM THE PIPELINE, VAPORIZED, AND PROPANE VAPORS SETTLED LIKE A FOG OVER THE BOTTOM OF A VALLEY. TWO MEN IN A PICKUP TRUCK ENTERED THE PROPANE CLOUD; THE TRUCK STALLED AND THE PROPANE GAS IGNITED WHEN AN ATTEMPT WAS MADE TO RESTART THE TRUCK. THE 2 PERSONS IN THE TRUCK WERE KILLED.
Recommendation: TEST PIPE FOR STRESS-CORROSION CRACKING USING A NONDESTRUCTIVE TESTING METHOD SUCH AS THE MAGNETIC PARTICLE-INSPECTION METHOD OR OTHER SUITABLE TECHNIQUE EVERY TIME THE PIPELINE IS EXPOSED FOR MAINTENANCE PURPOSES.
Original recommendation transmittal letter: PDF
Overall Status: Closed - Acceptable Action
Mode: Pipeline
Location: Ruff Creek, PA, United States
Is Reiterated: No
Is Hazmat: No
Is NPRM: No
Accident #: DCA77MP027
Accident Reports:
Consolidated Gas Supply Corporation, Propane Pipeline Rupture and Fire
Report #: PAR-78-01
Accident Date: 7/20/1977
Issue Date: 2/8/1978
Date Closed: 9/29/1978
Addressee(s) and Addressee Status: Consolidated Gas Transmission Corporation (Closed--No Longer Applicable)
Keyword(s):

Safety Recommendation History
From: NTSB
To: Consolidated Gas Transmission Corporation
Date: 9/29/1978
Response:

From: Consolidated Gas Transmission Corporation
To: NTSB
Date: 7/17/1978
Response: CONSOLIDATED GAS SUPPLY CORP. LTR: CONSOLIDATED GAS HAS DEVELOPED OPERATION AND MAINTENANCE PROCEDURES TO BE ISSUED SOON. THEY INCLUDE INSPECTION FOR STRESS CORROSION CRACKING--THE PIPE IN LPG PIPELINE G-136 SHALL BE TESTED FOR STRESS-CORROSION CRACKING USING THE MAGNETIC PARTICLE-INSPECTION METHOD EVERYTIME THE PIPELINE IS EXPOSED FOR MAINTENANCE PURPOSES.