# NTSB Safety Recommendation P-76-011

- **operation:** document
- **citation:** P-76-011
- **title:** NTSB Safety Recommendation P-76-011
- **source type:** guidance
- **agency:** National Transportation Safety Board
- **status:** guidance
- **official:** true
- **published on:** 1976-04-19
- **effective on:** 1976-04-19
- **summary:** EXPEDITE ITS REVIEW OF THE STUDY OF "RAPID SHUTDOWN OF FAILED PIPELINE SYSTEMS AND LIMITING OF PRESSURE TO PREVENT PIPELINE FAILURE DUE TO OVERPRESSURE" AND DETERMINE WHAT REGULATORY ACTION IS NECESSARY CONCERNING THE USE OF EXCESS FLOW VALVES.
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- **source url:** https://data.ntsb.gov/carol-main-public/sr-details/P-76-011
**body:**

NTSB safety recommendation P-76-011.

EXPEDITE ITS REVIEW OF THE STUDY OF "RAPID SHUTDOWN OF FAILED PIPELINE SYSTEMS AND LIMITING OF PRESSURE TO PREVENT PIPELINE FAILURE DUE TO OVERPRESSURE" AND DETERMINE WHAT REGULATORY ACTION IS NECESSARY CONCERNING THE USE OF EXCESS FLOW VALVES.

Priority: CLASS II

Overall Status: Closed--No Longer Applicable

Issued Date: 1976-04-19

Adopted Date: 1976-02-19

Overall Date Closed: 1978-12-29

Synopsis: ON APRIL 22, 1974, A MASSIVE, LOW-ORDER EXPLOSION DEMOLISHED THE WEST WALL OF A 25-STORY COMMERCIAL BUILDING AT 305 EAST 45TH STREET IN NEW YORK, NEW YORK. THE STRUCTURE OF THE ADJACENT BUILDING WAS DAMAGED AND GLASS WAS BROKEN IN OTHER BUILDINGS IN THE AREA. GLASS FRAGMENTS AND SLIVERS WERE BLOWN INTO 46TH STREET, WHERE THEY LAY 1 INCH DEEP IN PLACES. NO PERSONS WERE KILLED, BUT MORE THAN 70 PERSONS WERE INJURED.

Keywords: Excess Flow Valves

Ntsbnumber: PLD74XR001

Report Number: PAR-76-02

Addressee Name: RSPA

Addressee Status: Closed--No Longer Applicable

Addressee Date Closed: 1978-12-29

Addressee Acronym: RSPA

Addressee Organization Type: G-Federal Government

Communication Date: 1978-12-29

Communication Type: Official Correspondence

Addressee Acronym: RSPA

Addressee Organization Type: G-Federal Government

Communication Date: 1976-07-30

Communication Type: Official Correspondence
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