SEPARATION SYSTEMS. Separator (MBD-1600) or the Wet Oil Tank, (ABJ-1800). Water is

Transcription

1 SEPARATION SYSTEMS The L.P. Separator (MBD-1600) is a 3-phase separator that receives bulk production from the L.P. Header (GAY-1500), I.P. Separator Oil dump and the H.P. Separator Oil Dump. Gas is discharged to the Compressor 1 st Stage Suction Scrubber. Oil is dumped to the Heater Treater (NBK-300) but can be directed to the Wet Oil Tank (ABJ-1800). Water is dumped to the Water Skimmer (MBM-4000) but can be directed to the Wet Oil Tank (ABJ-1800). The I.P. Production Separator, MBD-1200 is a 3-phase separator that receives bulk production from the I.P. Header (GAY-1200). Gas is discharged to the Compressor 1 st Stage Suction Scrubber. Oil is dumped to the Heater Treater (NBK-300) but can be directed to the L.P. Separator (MBD-1600) or the Wet Oil Tank, (ABJ-1800). Water is dumped to the Water Skimmer (MBM-4000). The H.P. Production Separator (MBD-1100) is a 3-phase separator which receives flow from the H.P. Header (GAY-1000). Gas is discharged to the Compressor 1 st Stage Suction Scrubber but can be directed to either of the Bi-Directional Pipelines (KAA-1370/1380). Oil is dumped to the Heater Treater, (NBK-300) but can be directed to the L.P. Separator (MBD-1600) or the Wet Oil Tank, (ABJ-1800). Water is dumped to the Water Skimmer, (MBM-4000). The Test Separator (MBD-2100) is a 3-Phase separator that is designed to test the well stream of a single well. The operator must manually switch the well stream to the Test Header (GAY-2000) to direct the well stream to the Test Separator. Gas is discharged to the Compressor 1 st Stage Suction Scrubber but can be directed to either of the Bi-Directional Pipelines (KAA-1370/1380). Oil is dumped to the Heater Treater, (NBK-300) but can be directed to the L.P. Separator (MBD-1600) or the Wet Oil Tank, (ABJ-1800). Water is dumped to the Water Skimmer, (MBM-4000). The Gas Filter (MAK-8500) is a 2-phase vessel which receives flow from the discharge of the Gas Compressor but can receive flow from the Bi-Directional Pipeline (KAA-1350) Buy Back line. Gas is discharged to the Gas Lift Header and the Departing Gas Lift Pipelines, KAH-1400 / KAH Liquids from the Gas Filter are dumped to the L.P. Header, (GAY-1500). Rev: 1 Date: 3/13/17 Page 1 of 8 VR 272 A

2 A. PRE-STARTUP PROCEDURE NOTICE: Refer to Preliminary Considerations in SECTION 3, PART A before beginning any start-up procedures. 1. L.P. Separator, MBD-1600 and L.P. Header, GAY-1500 Gas discharge PC/PCV Oil dump LC/LCV s Water dump LC/LCV 2. I.P. Separator, MBD-1200 and I.P. Header, GAY-1200 Oil dump LC/LCV Water dump LC/LCV 3. H.P. Separator, MBD-1100 and H.P. Header, GAY-1000 Gas discharge PC/PCV Oil dump LC/LCV Water dump LC/LCV Rev: 1 Date: 3/13/17 Page 2 of 8 VR 272 A

3 4. Test Separator, MBD-2100 and Test Header, GAY-2000, (if the Test System will receive flow) Gas discharge PC/PCV Oil dump LC/LCV Water dump LC/LCV 5. Gas Filter, MAK-8500 Liquid dump LC/LCV Rev: 1 Date: 3/13/17 Page 3 of 8 VR 272 A

4 B. START-UP PROCEDURES 1. L.P. Separator, MBD-1600 be bypassed for start-up (flag device as appropriate) on the Upstairs Control Panel b. Pull the Pull to Reset relay to reset the L.P. Separator safety devices on the Upstairs Control Panel 2. I.P. Separator, MBD-1200 be bypassed for start-up (flag device as appropriate) on the Master Control Panel b. Pull the Pull to Reset relay to reset the I.P. Separator safety devices on the Master Control Panel Rev: 1 Date: 3/13/17 Page 4 of 8 VR 272 A

5 3. H.P. Separator, MBD-1100 be bypassed for start-up (flag device as appropriate) on the Master Control Panel b. Pull the Pull to Reset relay to reset the H.P. Separator safety devices on the Master Control Panel 4. Test Separator, MBD-2100 (if the Test System will receive flow) be bypassed for start-up (flag device as appropriate) on the Master Control Panel b. Pull the Pull to Reset relay to reset Test Separator safety devices and open inlet SDV on the MCP 5. Gas Filter, MAK-8500 be bypassed for start-up (flag device as appropriate) on the Master Control Panel/Gas Filter Panel b. Pull the Pull to Reset relay on the Gas Filter Panel to reset the Gas Filter safety devices and open inlet SDV Rev: 1 Date: 3/13/17 Page 5 of 8 VR 272 A

6 6. Continue to monitor bypassed safety devices and reset as they come in service 7. Immediately begin using Normal Operating Procedures to continue monitoring system REFER TO: SECTION 5, PART D Rev: 1 Date: 3/13/17 Page 6 of 8 VR 272 A

7 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: 1 Date: 3/13/17 Page 7 of 8 VR 272 A

8 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 effect 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. Platform Wells REFER TO: SECTION P1, PART C b. Incoming/Bi-Directional 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 & 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 the relief system 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: 1 Date: 3/13/17 Page 8 of 8 VR 272 A