Most Expensive Accidents

Incident Cost (2002 US$)
Piper Alpha 1. Piper Alpha
Occidental's Piper Alpha platform was destroyed by explosion and fire in 1988. 167 workers were killed in the blaze.
$1,270,000,000
Petrobras P36 2. Petrobras P36
In 2001, an explosion destabilised the P36 production rig in the Campos Basin, Brazil, eventually causing it to sink.
$515,000,000
Enchova Central 3. Enchova Central
Petrobras' Enchova PCE-1 Platform suffered twice with blowouts and fire in both 1984 and 1988, ending with the loss of the platform in 1988.
$461,000,000
Sleipner A Platform 4. Sleipner A
A design error resulted in the structural failure in 1991 of the gravity base unit of the original Sleipner A platform.
$365,000,000
5. Mississippi Canyon 311 A (Bourbon)
In 1987, the Mississippi Canyon 311 A Bourbon platform in the Gulf of Mexico was tilted to one side by an extensive underground blowout.
$274,000,000
Mighty Servant 2 6. Mighty Servant 2
The Mighty Servant 2 struck a rock and sank off Indonesia whilst carrying platform modules in 1999.
$220,000,000
Mumbai High North 7. Mumbai (Bombay) High North
A support vessel collided with Mumbai High North in 2005, rupturing a riser and causing a major fire which destroyed the platform.
$195,000,000 (2005)
Steelhead Platform 8. Steelhead Platform
A blowout in 1987 led to six months of trouble for the Steelhead Platform, resulting in fire and extensive platform damage.
$171,000,000
9. Name not known
1993: Explosion and fire destroyed a platform control room and damaged adjacent platforms on Lake Maracaibo, Venezuela, with eleven fatalites.
$122,000,000
Petronius Module 10. Petronius A
In 1998, a crane load line broke while lifting the south topside module of the Petronius platform, dropping the module into the Gulf of Mexico.
$116,000,000

Source:

MARSH: 100 Largest Losses PDF document

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