Alert 25-4 – Dropped Object Due to Corroded Deluge Flange
WHAT HAPPENED:
After landing a lower completion assembly on the drill floor and while retracting the deck crane whip line and twin hook stinger back through the v-door, the twin hook stinger swung to starboard causing one of the hooks to strike a blanking flange on the drill floor deluge line.
The 4.95kg (10.9 lbs) blanking flange detached and fell 4.5 meters (14.7 feet) to the drill floor, landing approximately 1.5 meters (4.9 feet) from the nearest person. This incident was classified as potential for fatality as per the industry DROPs Calculator…