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Oil rig disaster :
Piper Alpha 1988

     Yudha satria
About piper Alpha
• placed at north sea, The platform began
  production in 1976,
• first as an oil platform and then later converted to
  gas
• Oil production started in 1976 with about
  250,000 barrels (40,000 m3) of oil per day
  increasing to 300,000 barrels (48,000 m3)
• A gas recovery module was installed by 1980.
  Production declined to 125,000 barrels
  (19,900 m3) by 1988
construction
• A large fixed platform
• piper Alpha was situated on the Piper
  oilfield, approximately 120 miles (193 km)
  northeast of aberdeenin 474 feet (144 m) of
  water
• comprised four modules separated by firewalls
• produced crude oil and natural gas from 24 wells
  for delivery to flotta oil terminal
• that at the time of the disaster, Piper was one of
  the heaviest platforms on the north sea
Construction of
  piper alpha
Timeline of the incident
• 12:00 p.m. Two condensate
  pumps, designated A and B, displaced the
  platform's condensate for transport to the
  coast.
• 6:00 p.m. The day shift ended, and the night
  shift started with 62 men running Piper Alpha.
• 7:00 p.m. Like many other offshore
  platforms, Piper Alpha had an automatic fire-
  fighting system, driven by both diesel and
  electric pumps
next.
• 9:45 p.m. Condensate (natural gas liquids
  NGL) Pump B stopped suddenly and could not
  be restarted.
• 9:52 p.m. The permit for the overhaul was
  found, but not the other permit stating that
  the pump must not be started under any
  circumstances due to the missing safety valve.
• 9:55 p.m. Condensate Pump A was switched
  on. Gas flowed into the pump,
Later.
• 10:04 p.m. The control room was abandoned.
• 10:20 p.m. Tartan's gas line (pressurised to
  120 Atmospheres) melted and burst, releasing
  15-30 tonnes of gas every second, which
  immediately ignited.
• 10:30 p.m. The Tharos, a large
  semisubmersible fire fighting, rescue and
  accommodation vessel, drew alongside Piper
  Alpha.
At the end..
• 10:50 p.m. The second gas line ruptured, spilling
  millions of litres of gas into the conflagration.
• 11:20 p.m. The pipeline connecting Piper Alpha to
  the Claymore Platform burst.
• 11:50 p.m. The generation and utilities Module
  (D), which included the fireproofed
  accommodation block, slipped into the sea.
• 12:45 a.m., 7 July The entire platform had gone.
Aftermath..
• sufficient time for more effective emergency
  evacuation
• This was a consequence of the platform
  design, including the absence of blast walls.
• the nearby connected platforms Tartan and
  Claymore continued to pump gas and oil to
  Piper Alpha
• Their operations crews did not believe they
  had authority to shut off production
What can we learn.?

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Oil rig disaster piper alpha

  • 1. Oil rig disaster : Piper Alpha 1988 Yudha satria
  • 2. About piper Alpha • placed at north sea, The platform began production in 1976, • first as an oil platform and then later converted to gas • Oil production started in 1976 with about 250,000 barrels (40,000 m3) of oil per day increasing to 300,000 barrels (48,000 m3) • A gas recovery module was installed by 1980. Production declined to 125,000 barrels (19,900 m3) by 1988
  • 3.
  • 4. construction • A large fixed platform • piper Alpha was situated on the Piper oilfield, approximately 120 miles (193 km) northeast of aberdeenin 474 feet (144 m) of water • comprised four modules separated by firewalls • produced crude oil and natural gas from 24 wells for delivery to flotta oil terminal • that at the time of the disaster, Piper was one of the heaviest platforms on the north sea
  • 5. Construction of piper alpha
  • 6. Timeline of the incident • 12:00 p.m. Two condensate pumps, designated A and B, displaced the platform's condensate for transport to the coast. • 6:00 p.m. The day shift ended, and the night shift started with 62 men running Piper Alpha. • 7:00 p.m. Like many other offshore platforms, Piper Alpha had an automatic fire- fighting system, driven by both diesel and electric pumps
  • 7. next. • 9:45 p.m. Condensate (natural gas liquids NGL) Pump B stopped suddenly and could not be restarted. • 9:52 p.m. The permit for the overhaul was found, but not the other permit stating that the pump must not be started under any circumstances due to the missing safety valve. • 9:55 p.m. Condensate Pump A was switched on. Gas flowed into the pump,
  • 8.
  • 9. Later. • 10:04 p.m. The control room was abandoned. • 10:20 p.m. Tartan's gas line (pressurised to 120 Atmospheres) melted and burst, releasing 15-30 tonnes of gas every second, which immediately ignited. • 10:30 p.m. The Tharos, a large semisubmersible fire fighting, rescue and accommodation vessel, drew alongside Piper Alpha.
  • 10.
  • 11. At the end.. • 10:50 p.m. The second gas line ruptured, spilling millions of litres of gas into the conflagration. • 11:20 p.m. The pipeline connecting Piper Alpha to the Claymore Platform burst. • 11:50 p.m. The generation and utilities Module (D), which included the fireproofed accommodation block, slipped into the sea. • 12:45 a.m., 7 July The entire platform had gone.
  • 12.
  • 13. Aftermath.. • sufficient time for more effective emergency evacuation • This was a consequence of the platform design, including the absence of blast walls. • the nearby connected platforms Tartan and Claymore continued to pump gas and oil to Piper Alpha • Their operations crews did not believe they had authority to shut off production
  • 14.
  • 15. What can we learn.?