SECTION P4 SEPARATION SYSTEMS

Transcription

1 SEPARATION SYSTEMS The #1 Separator, MBD-0100 is a 3-phase separator which receives flow from the Incoming Pipeline, KAQ Gas from the Separator is directed to Fuel Gas Scrubber, and Gas Compressor Suction. Hydrocarbons from this Separator are pumped to the Departing Pipeline via Condensate Pump, PBA Produced water is dumped to the Water Skimmer, MBM-0200 for processing. The #3 Separator, MBD-0120 is a 3-phase separator which receives flow from the Incoming Pipeline, KAQ Gas from the #3 Separator is directed to Departing Pipeline. Hydrocarbons from this Separator dump to the Departing Pipeline. Produced water is dumped to the Water Skimmer, MBM-0200 for processing. Rev: 0 Date: 12/30/11 Page 1 of 5 WC 289 A

2 A. PRE-STARTUP PROCEDURE NOTICE: Refer to Preliminary Considerations in SECTION 3, PART A before beginning any start-up procedures. 1. #1 Separator, MBD-0100 a. Verify all vent and drain valves throughout each system are closed NOTICE: Any vessel purging should be done prior to getting system ready for start-up. b. Verify manual valves are open or closed as necessary to correctly direct flow through each system c. Verify that all liquid level controllers, pressure controllers and control valves are in-service and prepared for flow Oil pump run signal, LC/LCV Water dump, LC/LCV 2. #3 Separator, MBD-0120 a. Verify all vent and drain valves throughout each system are closed NOTICE: Any vessel purging should be done prior to getting system ready for start-up. b. Verify manual valves are open or closed as necessary to correctly direct flow through each system c. Verify that all liquid level controllers, pressure controllers and control valves are in-service and prepared for flow Oil dump LC/LCV Water dump LC/LCV Rev: 0 Date: 12/30/11 Page 2 of 5 WC 289 A

3 B. START-UP PROCEDURES 1. #1 Separator, MBD-0100 a. Verify that no safety devices are bypassed beyond those that must be bypassed for start-up (flag device as appropriate) on the MCP b. Pull the Process Control Group relay on the MCP to reset the Separator safety devices c. Pull the Condensate Pump Control relay on the MCP to reset the pump supply gas SDV d. Monitor and place safety devices in service as they clear 2. #3 Separator, MBD-0120 a. Verify that no safety devices are bypassed beyond those that must be bypassed for start-up (flag device as appropriate) on the MCP b. Pull the Process Control Group relay on the MCP to reset the Separator safety devices c. Monitor and place safety devices in service as they clear 3. Continue to monitor bypassed safety devices and reset as they come in service 4. Immediately begin using Normal Operating Procedures to continue monitoring system REFER TO: SECTION 5, PART D Rev: 0 Date: 12/30/11 Page 3 of 5 WC 289 A

4 C. SHUT-DOWN PROCEDURES WARNING: If complete process shut-down is required in order to shutdown the desired separation system, REFER TO: SECTION 4 NOTICE: Refer to Preliminary Considerations in SECTION 4, PART A before beginning any shut-down procedures. 1. Shut-down and isolate minor components that discharge to the separation system, and are not capable of being diverted to another separation system a. Manually activate the liquid dump to lower the vessel liquid level. Use caution not to lower the level far enough to trip the LSL (if applicable) b. Use LO/TO procedure to shut-down and isolate liquid dump from discharging to separation system WARNING: The Separation System must be returned to service to accept discharge before high liquid level or additional shutdowns will be required. 2. Place the separation system safety devices that are likely to trip and cause a process shutdown in bypass and flag 3. If possible, divert flow from inputs to alternate systems WARNING: The capacity of any alternate system should be verified before adding any additional inflow. a. Open the manual valve to divert flow to alternate system b. Slowly close manual valve to isolate flow away from separation system to be shutdown c. Monitor system accepting diverted flow to ensure operation within safe parameters Will level or pressure control devices require adjustment Will new operating ranges need to be established Rev: 0 Date: 12/30/11 Page 4 of 5 WC 289 A

5 4. If necessary, manually activate liquid dumps in separation system vessels before isolating all system input CAUTION: Pay special attention to the levels in the minor components that were isolated and/or shutdown, the liquids dumped from this separation systems before final shut-down may have an affect on the liquids sent to those vessels later. 5. Shut-down facility inputs that flow to the separation system and will not be diverted a. Incoming Pipelines REFER TO: SECTION P2, PART C 6. Isolate the separation system a. Close all inlet manual valves to separation system b. Close gas discharge manual valves from system components c. Close oil dump manual valves from system components d. Close water dump manual valves from system components 7. Flag shut-down components as Out of Service 8. Open the manual gas relief/vent valve to bleed components to Vent Scrubber 9. Open the manual liquid drain valve to drain remaining liquid 10. Verify components are bled to 0 psig 11. Continue to monitor the other in service systems for safe operating parameters 12. Continue to monitor liquid level in other minor isolated components so appropriate action can be taken as necessary NOTICE: If shut-down was performed as preparation for maintenance work, or if the cause of the shutdown requires corrective action/repair, continue with Lock Out/Tag Out (LO/TO) Procedures REFER TO: Fieldwood Safe Work Practices for LO/TO (Section D Chapter 5) (can be found on the Fieldwood SEMS Portal) Rev: 0 Date: 12/30/11 Page 5 of 5 WC 289 A