Skip Ribbon Commands
Skip to main content
Bookmark and Share this page

Accident Report Detail

Safety Recommendation Report: Installation of PermaLock Mechanical Tapping Tee Assemblies

Executive Summary

‚ÄčThe National Transportation Safety Board (NTSB) is providing the following information to urge the Pipeline and Hazardous Materials Safety Administration (PHMSA) and Honeywell to take action on safety recommendations intended to prevent the incorrect installation of PermaLock mechanical tapping tee assemblies in gas distribution systems. These recommendations are derived from our ongoing investigation of a fatal accident involving a natural gas explosion and fire in Millersville, Pennsylvania. The NTSB is issuing two recommendations to PHMSA and two recommendations to Honeywell.

Probable Cause

‚ÄčThis Safety Recommendation Report is not a final report and as such contains no determination of probable cause.

Accident Location: Millersville , PA USA  
Accident Date: 7/2/2017
Accident ID: DCA17FP006

Date Adopted: 6/18/2018
NTSB Number: PSR1801
NTIS Number: