Gas weep from damaged pressure indicator instrument tubing

Cause & Consequence

• Uncontrolled release of a flammable gas or liquid

Incident Location

Fixed Installation

Incident Activity

Production operations

Specific Incident Equipment

Pressure transmitter on fuel gas line

Lessons Identified

This failure is suspected to be due to a combination of normal work hardening of the tube end during assembly and then cracking as a result of mechanical damage which has bent the tube immediately behind the nut. The instrument tubing was not supported sufficiently along its length.

Incident Recommendations

Repair the instrument tubing and provide adequate support.