Submission - Final Report - 5 Whys Work Sheet - Failed Produced Water Pipe Support Rev 2

Written by Claude Haiku 4.5 from the extracted text on 10 Jul 2026. It can miss or misread redacted and scanned pages. Check the source before relying on it.

A 5 Whys incident investigation report documents a near-miss event involving a produced water pipe support failure on an offshore facility's cargo deck. On 4 July 2019, during high-pressure water blasting of corrosion remediation work on the Orchard Road Bridge structure, an operator focused a water jet at corrosion around a drainage hole in Column 4 Starboard to facilitate water discharge. This caused the angle pipe support attached to the column to fail, resulting in the 300mm super duplex produced water line dropping 450mm. The pipe support was the sole direct support for an expansion bend section of the line serving the degasser-to-slops tank system. The investigation identified that pipe supports in the area had last been inspected in 2015 with a recommended re-inspection due in 2021, and the line was out of service and isolated at the time of the incident. The document captures the event timeline, equipment location (Cargo Deck STB Side), and contributing factors relating to maintenance oversight and work planning during the blasting operation.