NTSB Safety Recommendation P-76-083

NTSB safety recommendation P-76-083.

COMPLETE INSPECTION OF THOSE LOCATIONS ALONG THE CONSTRUCTION ROUTE (DRAWING NO. F-3386-2) WHERE GAS MAINS AND SEWER LATERALS MAY BE IN PROXIMITY TO ONE ANOTHER AND CORRECT ANY DEFICIENCIES. (URGENT)

Priority: CLASS I

Overall Status: Closed - Acceptable Action

Issued Date: 1976-10-26

Adopted Date: 1976-10-26

Overall Date Closed: 1983-02-14

Synopsis: ON AUGUST 29, 1976, AN EXPLOSION AND FIRE DESTROYED A HOUSE AT 6521 20TH AVENUE IN KENOSHA, WISCONSIN. TWO PERSONS WERE KILLED, FOUR PERSONS WERE INJURED, AND TWO ADJACENT HOUSES WERE DAMAGED. THE DESTROYED HOUSE WAS NOT SERVED BY NATURAL GAS. HOWEVER, NATURAL GAS, WHICH WAS ESCAPING AT 58 PSIG PRESSURE FROM A PUNCTURED 2-INCH PLASTIC MAIN LOCATED 39 FEET AWAY, HAD ENTERED THE HOUSE THROUGH A 6-INCH SEWER LATERAL. THE GAS WAS IGNITED BY AN UNKNOWN SOURCE.

Ntsbnumber: DCA76FP028

Report Number: None

Addressee Name: Wisconsin Natural Gas Company

Addressee Status: Closed--No Longer Applicable

Addressee Date Closed: 1983-02-14

Addressee Organization Type: P-Private Industry

Communication Date: 1982-10-19

Communication Type: Official Correspondence

Communication Contents: WISCONSIN NATURAL GAS COMPANY LETTER: WISCONSIN NATURAL GAS COMPANY PERFORMED A COMPLETE INSPECTION OF THE ENTIRE PROJECT AREA SHORTLY AFTER THIS INCIDENT OCCURRED. THIS INSPECTION PROGRAM DETERMINED THE LOCATION OF EVERY SEWER LATERAL IN THE CONSTRUCTION AREA BY EITHER INSTRUMENTATION OR EXCAVATION. CORRECTIVE ACTIONS WERE TAKEN AT EVERY LOCATION WHERE A CONFLICT WAS DISCOVERED.

Addressee Organization Type: P-Private Industry

Communication Date: 1983-03-04

Communication Type: Official Correspondence

Addressee Organization Type: P-Private Industry

Communication Date: 1983-02-14

Communication Type: Official Correspondence

Addressee Organization Type: P-Private Industry

Communication Date: 1982-10-05

Communication Type: Official Correspondence