# NTSB Safety Recommendation P-80-012 - **operation:** document - **citation:** P-80-012 - **title:** NTSB Safety Recommendation P-80-012 - **source type:** guidance - **agency:** National Transportation Safety Board - **status:** guidance - **official:** true - **published on:** 1980-03-05 - **effective on:** 1980-03-05 - **summary:** THE NTSB RECOMMENDS THAT THE NORTHWESTERN PUBLIC SERVICE COMPANY: EMPHASIZE THE ENFORCEMENT OF COMPANY CONSTRUCTION PROCEDURES BY PROJECT ENGINEERS AND INSPECTORS THROUGH TRAINING PROGRAMS AND SUPERVISORY FOLLOWUP. - **machine formats:** - **json:** https://regulus.evalyn.ai/document/ntsb-recommendation-p-80-012.json - **markdown:** https://regulus.evalyn.ai/document/ntsb-recommendation-p-80-012.md - **app url:** https://regulus.evalyn.ai/document/ntsb-recommendation-p-80-012 - **source url:** https://data.ntsb.gov/carol-main-public/sr-details/P-80-012 **body:** NTSB safety recommendation P-80-012. THE NTSB RECOMMENDS THAT THE NORTHWESTERN PUBLIC SERVICE COMPANY: EMPHASIZE THE ENFORCEMENT OF COMPANY CONSTRUCTION PROCEDURES BY PROJECT ENGINEERS AND INSPECTORS THROUGH TRAINING PROGRAMS AND SUPERVISORY FOLLOWUP. Priority: CLASS II Overall Status: Closed - Acceptable Action Issued Date: 1980-03-05 Adopted Date: 1980-02-22 Overall Date Closed: 1983-02-02 Synopsis: ON AUGUST 28, 1978, NATURAL GAS, WHICH HAD ESCAPED FROM A CIRCUMFERENTIAL FRACTURE IN A SOCKET HEAT-FUSION COUPLING ON A 2-IN. POLYETHYLENE (PE) MAIN, OPERATING AT 40-PSIG PRESSURE, MIGRATED BENEATH A ONE-STORY HOUSE IN GRAND ISLAND, NEBRASKA, EXPLODED, AND THEN BURNED. ONE PERSON WAS INJURED; THE HOUSE AT 2517 APACHE ROAD WAS DESTROYED; AND THREE ADJACENT HOUSES WERE DAMAGED. THE GAS WAS IGNITED BY AN UNKNOWN SOURCE. Keywords: Training and Education Ntsbnumber: FTW78FP014 Report Number: None Addressee Name: Northwestern Public Service Company Addressee Status: Closed--No Longer Applicable Addressee Date Closed: 1983-02-02 Addressee Organization Type: P-Private Industry Communication Date: 1982-11-04 Communication Type: Official Correspondence Communication Contents: NORTHWESTERN PUBLIC SERVICE COMPANY LTR: (1) PROPER GAS LINE CONSTRUCTION PROCEDURES, MORE SPECIFICALLY BACKFILL AND SUPPORT TECHNIQUES, WERE REVIEWED WITH COMPANY PERSONNEL THROUGH TRAINING PROGRAMS WITH FOLLOW-UP REFRESHER TRAINING AND SUPERVISORY REVIEW; (2) COMPANY PERSONNEL WERE ADVISED TO MONITOR NON-COMPANY CONSTRUCTION PROJECTS (SEWER AND PLUMBING, FOR EXAMPLE) WHICH WOULD AFFECT THE COMPANY'S GAS MAINS AND SERVICES AND TO DISCUSS WITH CONTRACTORS THE NEED FOR PROPER SUPPORT OF GAS MAINS AND SERVICES; (3) THE COMPANY INITIATED A PROGRAM TO CONDUCT MONTHLY FLAME IONIZATION LEAKAGE SURVEYS OVER ALL IDENTIFIABLE PLASTIC GAS MAINS MANUFACTURED BY THE FIRM WHICH HAD PRODUCED THE CRACKED COUPLING; (4) THE COMPANY INITIATED A PROGRAM, WHICH HAS NOW BEEN COMPLETED, TO REPLACE ALL PLASTIC TEES, ELBOWS AND END CAPS MANUFACTURED BY THE FIRM WHICH HAD PRODUCED THE CRACKED COUPLING. Addressee Organization Type: P-Private Industry Communication Date: 1983-02-02 Communication Type: Official Correspondence Addressee Organization Type: P-Private Industry Communication Date: 1982-10-08 Communication Type: Official Correspondence - **truncated:** false - **body characters:** 2342