# NTSB Safety Recommendation P-79-019

- **operation:** document
- **citation:** P-79-019
- **title:** NTSB Safety Recommendation P-79-019
- **source type:** guidance
- **agency:** National Transportation Safety Board
- **status:** guidance
- **official:** true
- **published on:** 1979-07-13
- **effective on:** 1979-07-13
- **summary:** THE NTSB RECOMMENDS THAT THE ALYESKA PIPELINE SERVICE COMPANY: FABRICATE A VARIETY OF SPECIAL SPLIT-SLEEVE REPAIR CLAMPS LARGE ENOUGH TO ENCOMPASS PIPE WRINKLES SIMILAR TO THOSE ENCOUNTERED IN THE LATEST FAILURES. THESE REPAIR SLEEVES SHOULD BE STORED TO PROVIDE FOR RAPID DISPOSITION TO LEAK SITES. (URGENT)
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- **source url:** https://data.ntsb.gov/carol-main-public/sr-details/P-79-019
**body:**

NTSB safety recommendation P-79-019.

THE NTSB RECOMMENDS THAT THE ALYESKA PIPELINE SERVICE COMPANY: FABRICATE A VARIETY OF SPECIAL SPLIT-SLEEVE REPAIR CLAMPS LARGE ENOUGH TO ENCOMPASS PIPE WRINKLES SIMILAR TO THOSE ENCOUNTERED IN THE LATEST FAILURES. THESE REPAIR SLEEVES SHOULD BE STORED TO PROVIDE FOR RAPID DISPOSITION TO LEAK SITES. (URGENT)

Priority: CLASS I

Overall Status: Closed - Acceptable Action

Issued Date: 1979-07-13

Adopted Date: 1979-07-13

Overall Date Closed: 1988-03-14

Synopsis: ON JUNE 10, 1979, THE PILOT OF A HELICOPTER REPORTED SIGHTING OIL ON THE SURFACE OF THE ATIGUN RIVER NEAR THE ROUTE OF THE ALYESKA PIPELINE SERVICE COMPANY'S 48-INCH CRUDE OIL PIPELINE. THE OIL WAS SEEN ON THE NORTH SIDE OF ATIGUN PASS, 166 MILES SOUTH OF THE PIPELINE TERMINAL AT PRUDHOE BAY, ALASKA. ALYESKA WAS NOTIFIED AND BEGAN SHUTDOWN PROCEDURES AT 9 A.M. BY 9:28 A.M. THE NORTH SECTION OF THE LINE BETWEEN PUMP STATIONS NOS. 1 AND 4 WAS SHUT DOWN. BY 10:46 A.M. THE ENTIRE LINE HAD BEEN SHUT DOWN. THE PIPE BETWEEN PUMP STATIONS NOS. 4 AND 5 WAS DRAINED.

Probable Cause: None

Ntsbnumber: DCA79FP018

Report Number: None

Addressee Name: Alyeska Pipeline Service Company

Addressee Status: Closed - Acceptable Action

Addressee Date Closed: 1988-03-14

Addressee Organization Type: P-Private Industry

Communication Date: 1979-08-17

Communication Type: Official Correspondence

Communication Contents: ALYESKA PIPELINE SERVICE COMPANY LTR: ALYESKA IS CURRENTLY INVESTIGATING COMMERCIALLY AVAILABLE SLEEVES LARGE ENOUGH TO ENCOMPASS PIPE WRINKLES SIMILAR TO THOSE ENCOUNTERED. THERE ARE SIX SPLIT-SLEEVES SIMILAR IN DESIGN TO THOSE INSTALLED AT MP 166 AND MP 734, CURRENTLY ON ORDER. FURTHER DESIGN IMPROVEMENTS ARE BEING CONSIDERED.

Addressee Organization Type: P-Private Industry

Communication Date: 1987-10-26

Communication Type: Official Correspondence

Communication Contents: NO RESPONSE--FOLLOWUP LETTER.

Addressee Organization Type: P-Private Industry

Communication Date: 1987-11-17

Communication Type: Official Correspondence

Communication Contents: ALYESKA WAS UNABLE TO LOCATE COMMERCIALLY AVAILABLE SPLIT SLEEVE REPAIR CLAMPS SUITABLE TO ENCOMPASS PIPE WRINKLES SIMILAR TO THOSE ENCOUNTERED AT PIPELINE MILEPOST 166 AND MILEPOST 734. ALYESKA HAS DESIGNED, FABRICATED AND TESTED SPECIAL SPLIT SLEEVES FOR THIS PURPOSE. FIVE SUCH SLEEVES ARE STORED AT FAIRBANKS TO PROVIDE FOR RAPID DEPLOYMENT TO POTENTIAL LEAK SITES.

Addressee Organization Type: P-Private Industry

Communication Date: 1979-09-13

Communication Type: Official Correspondence

Addressee Organization Type: P-Private Industry

Communication Date: 1988-03-14

Communication Type: Official Correspondence

Addressee Organization Type: P-Private Industry

Communication Date: 1987-10-26

Communication Type: Official Correspondence
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