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FerndaleCherry Point
Olympia
Seattle
Sea Tac Renton
Woodinville
A llen
B ellingham (Rupture L oc ation)
Oregon
14
”
CA NA DA U N IT E D STAT E S
B ayviewA nac ortes
P or tland
Washington
16”20”
16”
Control Valve CV-1904Control Valve CV-1904
• Inlet control valves had an extended piston stop set.
• Outlet control valves did not have an extended piston stop set to prevent pumping against a closed valve.
Control Valve CV-1904Control Valve CV-1904
• The stop setting was not reached so it did not play a role in the accident.
• Demonstrates ineffective management oversight of the terminal construction.
Relief Valve RV-1919Relief Valve RV-1919
• The intended design pressure setting was 740 psig which was then lowered to 650 psig.
Relief Valve RV-1919Relief Valve RV-1919
• Fisher-Rosemount misinterpreted specification sheets and provided a 100 psig set point.
Relief Valve RV-1919Relief Valve RV-1919
• Fisher-Rosemount clearly indicated the 100 psig setting in documentation and on the pilot.
• Olympic and/or Jacobs should have noticed the discrepancy.
Relief Valve RV-1919Relief Valve RV-1919
• No testing under conditions approximating actual operations was conducted prior to start up.
• Olympic did not discover that RV-1919 was not set correctly until it started operations at Bayview.
Relief Valve RV-1919Relief Valve RV-1919
• Inlet block valve closed 35 times due to high pressure in Bayview.
• In May 1999, Olympic reduced the set point of RV-1919 to 650 psig.
Relief Valve RV-1919Relief Valve RV-1919
• Inlet block valve closed 6 more times before the accident.
• Olympic did not make adequate efforts to investigate the block valve closings.
Relief Valve RV-1919Relief Valve RV-1919
• Olympic should have investigated the failure of RV-1919 to operate consistently and taken measures to correct the condition that may have prevented the pressure surge that ruptured the pipeline.
Bayview OperationsBayview Operations
• After commencing operations at the Bayview products terminal, Olympic management did not adequately address operational issues.
Bayview OperationsBayview Operations
• Did not test RV-1919 under actual operating conditions.
• Did not correct valve configurations.• Did not adequately investigate block valve
closings.• Did not adequately address operational
issues.
Bayview OperationsBayview Operations
• Olympic did not exercise effective management oversight of the construction and activation of the Bayview products terminal.
Federal RegulationsFederal Regulations
• Require annual testing to determine that relief valves are functioning properly, in good mechanical condition, and have adequate capacity and reliability.
Federal RegulationsFederal Regulations
• Regulations provide insufficient guidance to ensure that test protocols and procedures will effectively indicate relief valve or pilot control malfunctions.
Federal RegulationsFederal Regulations
• Since Bayview was a new facility, OPS regulations also required that RV-1919 be tested under conditions approximating actual operations.
Federal RegulationsFederal Regulations
• Regulations for new installations do not provide adequate guidance to ensure that relief valves are tested under conditions approximating actual operations.