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

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,

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.

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.

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

15. What can we learn.?