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Home My WebLink AboutARCO - CGFState of Alaska Alaska Oil & Gas Conservation Commission 1999 Facility Report Files File Names Gas Disposition U • ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION 4?E~,°~SE4~ Facility CENTRAL GAS FACILITY Operator ARCO ALASKA, INC. Field(s) Month/Yeaz of Disposition EASTERN OPERATING ARBA-PBU Tan-99 Disposition *Indicate contribution of each pool to total. 1. Sold 3,260,544 Pool Name Code Percent 2. Reinjected 17,244,852 PRUDHOE 640150 100 3. Flazed or vented less than 1 hour 9,811 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 5,925 5. Pilot and Purge 27,084 6. Used for lease operations Fuel Assist 3,333,843 56,493 7. Other O (>~Iic ~~1i:1~~ c ~~q Flalug Aii~?oi`i2at~ii:~1.~1~ TOTAL items 1 - 7 23,938,552 1. Safety MCF 8. NGL gas equivalent produced 3,260,544 2. Lease Use MCF 9. Purchased gas 0 3. Conserv. Purposes MCF 10. Transferred from: CCP 25,641,781 Commissioner Date 11. Transferred to: FS1, FS2, FS3 1,703,229 Note: All volumes must be corrected to Remarks: pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the I hereby certify that the foregoing is true and correct to the best of my knowledge. Signature: ~~ k. ~ r Title: MANAGER month following the month of disposition. Authority 20 AAC 25.235. Form 10-422 (Re ' 4/95) ~--'~ +: 9901 FORM 10-422 REVISED.xIs/FORM l Od22 ilnz.i ..... t1A14t1',r ~ !.-: ~t~ ~~ ` k ~~ ~"+ t r ~z O a r 5 ~v T T Z T ~o ~o r W ~~ s 3c ~ c c ~ N D VI N ~, A O ~O 61 W A `~I J O Q~~ o=~ < _ c m ~ N m ~ r ~ 3 w lI1 p W V ~O V (J ~7 O~ 41 W W 0 0 o ~ ~ o m 3 ow S ~S ~~ V ~j CT 5 .. v w oho O a0 ~' m ~Q~~ o ~a~ a, m m `~ 3~ m m q~ c 3 Q n~ ~ a n O m~ H O 7 7 ~ ? A ~ A O ~ ~ ~ ~ O c' m ~ ~ ~ ~ m 0 Q U O - + Q m 0 m ~ 6Q -p6~ ~~ ~ ~~ ~ p O O Q ~ n o ~ Q ~ N ~ °-fl Q m 2 ~ Q ~ Q ~ m Q C C ~' y O ~ w A ~^^ Y C 7 C v v ~ p ~ Qua .N. ~ m~~ ~ ~ Q Q ~ ~ ~ ~ S ~ ~ ~ ~ ~ ~ ~ w m ~ ~°a a H O nm ~ ~ m ~~ Q 0 c • T 5 Z O o O ~ T z o z^ YI C T m 3 ~ T ~~ o ~ T '~ A w D 3 z .. ~ o N 70 C o, D ~ ~ ~ m a ~ 0 ~ m Q A 0 'v m Q ~ ~ m ~ ~~v ~ ~ ~ fl. w ~ ~ ~ -+ 6 ~ Q ~ Z H y ~ ~ ~ ~ ~ ~ 3O m Q~ m 3 O ~ O m Z >>~m O y ~ g m .,, ~ ~ ~ n ~ O p O T Z O C ~ O N Y~ ~ > > y O ~ ~ O N ti A ~ Q m m ~ ~ ~~ p ~ ^m^_ C Y C p r v v fl ~ D Q 6 O Q Q. D ~ ~ T Z n -Q O A r ~' Y'i, Z ~ Q. O D m c 0 5 Z Z v D N D ~o fl ~ ~ O Q n ~ T 2 `0 Z ~ ~ Z n D Z v n Z < f1 Z~ O N m D 70 Z (~ N ~o • i Summary of CGF Flaring Events on 1-19-99 At 01:40 there was an event in the propane refrigeration section of the CGF that caused a significant plant upset. This upset resulted in eight separate flaring events during the next 10 hours, all of which were less than one hour in duration. At 16:10 there was a brief five-minute flare event which was completely unrelated to the earlier plant upset. The total volume flared for the day was 5925 MSCF. 01:40 Event Initiation At 01:40 the LP Economizer (a liquid propane process vessel in the propane refrigeration system) outlet emergency isolation valve, tag F-122AV, came off open limits for unknown reasons. The OSD (operational shutdown) logic associated with this valve initiates a shutdown of the two propane refrigeration compressors, tags 1806 and 1856. The two propane compressors shutdown as designed. The propane refrigeration system cools the feed gas down, liquefying the MI and NGL components, which are separated from the lighter gas components in the LTS towers and sent to the stabilizers. It is at the stabilizers where this liquid stream is separated into the MI and NGL fractions. With the loss of refrigeration circulation, recovery of MI and NGL stops. The MI compressors (tag 1805 and 1855) experience a loss of feed and unload. There are still residual MI gas volumes generated in the stabilizers, but in insufficient quantities to operate even one MI compressor at part load. This gas is then vented to the flare to protect the stabilizers from overpressure. Due to the unknown reason for the propane compressor trips, Instrument Technicians were called out to troubleshoot the problem. Having not found any problem and no reason not to safely restart the propane compressor units, it was at 03:55 that 1806 was given a restart attempt and 04:05 that 1856 was given a restart attempt. 1806 failed to restart due to problems with the WHRU (waste heat recovery unit) on the exhaust. 1856 restarted but would not load due to problems with the turbine second stage nozzle controls. 1856 was able to provide some cooling effect, but only a minor amount. It was left in this condition and manpower was diverted to get 1806 operational. At 04:20 CGF tandem compressor 1886 shutdown due to a false high level in the second stage suction scrubber. This was due to the compressor processing heavier gas due to the loss of refrigeration. This unit was successfully restarted at 08:30. At 06:45 refrigeration compressor 1806 is successfully restarted and loaded, having fixed the WHRU problems (found to be limit switches). The first MI compressor, 1805 is loaded successfully. At 10:00 refrigeration compressor 1856 turbine second stage nozzle control problem is fixed and the unit restarted and loaded. The second MI compressor, 1855 is loaded successfully. The last of the flaring for this event was at 11:00. The total time duration for the eight flare events due to the plant upset was 253 minutes. Throughout the field a total of 41 wefts representing 1.264 BCF/D were either shut-in or pinched back to eliminate flaring for this event. Breakdown of the well cuts are as follows: Number Time Of Wells 01:40 - 02:20 19 04:20 22 Gas Cut Volume MMscfd 560 704 Total 41 1,264 MMscfd 16:10 Event At 16:10 afive-minute flare resulted from a calibration of level switches on the LTS-1/2 towers. The level valves were placed in manual and slightly over pressured the stabilizers with excess feed. 3/12/99 PWA Re: Supplimental Information: CGF Flare Activity 1/1 ~ • Subject: Re: Supplimental Information: CGF Flare Activity 1/19/99 Date: Fri, 12 Mar 1999 10:38:56 -1000 From: "EOC Supervisor PRB" <P2013@mail.aai.arco.com> To: Wendy Mahan <Wendy_Mahan@admin.state.ak.us> Wendy, Thanks for the opportunity to work this request out. Enclosed is a revised draft of the 1/19/99 event, inclusive of the timing of the well cuts. Let me know if this works for you. Regarding the statement you asked to verify, what is stated is correct with the exception of the 1/31 comment. Beginning with this January 1999 Gas Disposition Report, the flaring events listed include only events > 1 hour and/or > 5MM. The 1/31 event was less than one hour but greater than 5MM. Paul (See attached file: CGF Flare 1.19.99.doc) Wendy Mahan <Wendy_Mahan@admin.state.ak.us> on 03/12/99 07:15:05 AM To: EOC Supervisor PRB/AAI/ARCO@ARCO cc: Subject: Re: Supplimental Information: CGF Flare Activity 1/19/99 Paul, Thanks for the information. A detailing of the timing of the cuts that were made would also be helpful. Please also verify the following: The shutdown event on January 19th consisted events, all under one hour in duration, for during the following event time: 0150-1100. for the month of January was 5925 mcf, total 9811 mcf. The event reported for January 31 misreported as an event over one hour. of six separate flaring ~ total of 253 minutes Total flared over one hour flared under one hour was from 1049-1147 was Thanks, Wendy ~.. Name: CGF Flare 1.19.99.doc -';CGF Flare 1.19.99.doc Type: Download File (application/msword) Encoding: base64 Description: Mac Word 3.0 1 of 1 ~ 3/12/99 11:13 AM SuppLTnental Inf.~rmation: CCF Flare Activity 1/19/99 Subject: Supplimental Information: CGF Flare Activity 1/19/99 Date: Thu; 11 Mar 1999 14:14:13 -1000 From: "EOC Supervisor PRB" <P2013@mail.aai.arco.com> To: Wendy_Mahan@admin.state.ak.us Wendy, Per our discussion earlier today, enclosed is a draft response to your request for supplimental information regarding the 1/19/99 flare activity at the Prudhoe Bay CGF. I apologize for the lack of clarity in the origional submission for this in the January Gas Disposition Report. If you have any questions or comments on this information, please feel to contact me at 659-5566 or by e-mail reply. If this information is sufficient for the AOGCC's use, then I can submit this more formally via letter. Paul Andrews EOC Supervisor (See attached file: CGF Flare 1.19.99.doc) Name: CGF Flare 1.19.99.doc [jCGF Flare 1.19.99.doc Type: Download File (application/msword) Encoding: base64 Description: Mac Word 3.0 1 of 1 3/11/99 2:42 PM Summary of CGF Flaring Events on 1-19-99 At 01:40 there was an event in the propane refrigeration section of the CGF that caused a significant plant upset. This upset resulted in eight separate flaring events during the next 10 hours, all of which were less than one hour in duration. At 16:10 there was a brief five-minute flare event which was completely unrelated to the earlier plant upset. The total volume flared for the day was 5925 MSCF. 01:40 Event Initiation At 01:40 the LP Economizer (a liquid propane process vessel in the propane refrigeration system) outlet emergency isolation valve, tag F-122AV, came off open limits for unknown reasons. The OSD (operational shutdown) logic associated with this valve initiates a shutdown of the two propane refrigeration compressors, tags 1806 and 1856. The two propane compressors shutdown as designed. The propane refrigeration system cools the feed gas down, liquefying the MI and NGL components, which are separated from the lighter gas components in the LTS towers and sent to the stabilizers. It is at the stabilizers where this liquid stream is separated into the MI and NGL fractions. With the loss of refrigeration circulation, recovery of MI and NGL stops. The MI compressors (tag 1805 and 1855) experience a loss of feed and unload. There are still residual MI gas volumes generated in the stabilizers, but in insufficient quantities to operate even one MI compressor at part load. This gas is then vented to the flare to protect the stabilizers from overpressure. Due to the unknown reason for the propane compressor trips, Instrument Technicians were called out to troubleshoot the problem. Having not found any problem and no reason not to safely restart the propane compressor units, it was at 03:55 that 1806 was given a restart attempt and 04:05 that 1856 was given a restart attempt. 1806 failed to restart due to problems with the WHRU (waste heat recovery unit) on the exhaust. 1856 restarted but would not load due to problems with the turbine second stage nozzle controls. 1856 was able to provide some cooling effect, but only a minor amount. It was left in this condition and manpower was diverted to get 1806 operational. At 04:20 CGF tandem compressor 1886 shutdown due to a false high level in the second stage suction scrubber. This was due to the compressor processing heavier gas due to the loss of refrigeration. This unit was successfully restarted at 08:30. At 06:45 refrigeration compressor 1806 is successfully restarted and loaded, having fixed the WHRU problems (found to be limit switches). The first MI compressor, 1805 is loaded successfully. At 10:00 refrigeration compressor 1856 turbine second stage nozzle control problem is fixed and the unit restarted and loaded. The second MI compressor, 1855 is loaded successfully. The last of the flaring for this event was at 11:00. The total time duration for the eight flare events due to the plant upset was 253 minutes. Throughout the field a total of 41 wells representing 1.26 BCF/D were either shut-in or pinched back to eliminate flaring for this event. 16:10 Event At 16:10 afive-minute flare resulted from a calibration of level switches on the LTS-1/2 towers. The level valves were placed in manual and slightly over pressured the stabilizers with excess feed. ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility Operator Field(s) Month/Yeaz of Disposition CENTRAL GAS FACILITY ARCO ALASKA, INC. EASTERN OPERATING AREA-PBU Feb-99 ~~ Disposition 1. Sold 2,753,688 2. Reinjected 14,298,627 3. Flared or vented less than 1 hour 11,599 4. Flazed or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 0 5. Pilot and Purge 24,973 6. Used for lease operations Fuel Assist 2,943,392 55,250 7.Other 0 TOTAL items 1 - 7 20,087,529 8. NGL gas equivalent produced 2,753,688 9. Purchased gas 0 10. Transferred from: CCP 21,557,152 11. Transferred to: FS 1, FS2, FS3 1,469,623 Remarks: I hereby certify that the fo going is true and correct to the best of my knowledge. Signature:// / ~ Title: SUPERVISOR ww Form 10-422 ( Revised 4/95) s-~` gypp` 7 ; ~-r ~ ~A ~. X.. x, ~.+ w ~. ._ 4... *Indicate contribution of each pool to total. Pool Name Code Percent PRUDHOE 640150 100 Official Use Only--Plano Authorization > 1 'hr 1. Safety MCF 2. Lease Use MCF 3. Conserv. Purposes MCF Commissioner Date Note: All volumes must be corrected to pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the month following the month of disposition. Authority 20 AAC 25.235. 9902 FORM 1(}422.~ds/FORM 10-422 ARCO ALASKA, INC. CONSERVATION ORDER NO. 219 GAS FLARING OR VENTING INCIDENTS CGF February-1999 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING OR VENTING EVENTS GREATER THAN 1 HOUR and/or GREATER THAN 5MM • Over 1 Hour/Over 5MM 0 Less 1 HR/Less 5MM 11,599 Total over/under i Hr/5MM 11,599 Pilot/Purge 24,973 Continuous Assist 55,250 TOTAL FLARED/VENTED 91,822 ~~Y. ~-~ i ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION C~ u Foam 10-422 (Revi 4/95) Facility CENTRAL GAS FACILITY Operator ARCO ALASKA, INC. Field(s) Month/Year of Disposition EAS'T'ERN OPERATING AREA-PBU Mar-99 Disposition *Indicate contribution of each pool to total. 1. Sold 2,873,453 Pool Name Code Percent 2. Reinjected 17,968,060 PRUDHOE 640150 100 3. Flared or vented less than 1 hour 1,026 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 0 5. Pilot and Purge 29,769 6. Used for lease operations Fuel Assist 3,329,987 54,673 7. Other 0 :.:.` ..` (?ff ci&1.?Js'~ Ou1y ~]ariitg. A.. r1?vziz~tE~t ...11th TOTAL items 1 - 7 24,256,968 1. Safety MCF 8. NGL gas equivalent produced 2,873,453 2. Lease Use MCF 9. Purchased gas 0 3. Conserv. Purposes MCF 10. Transferred from: CCP ?~,RR~,~St7 Commissioner Date 11. Transferred to:FS1,FS2,FS3 t.6?t~~?82' Note: All volumes must be corrected to Remarks: pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the I hereby certify that the foregoing is [me and correct to the best of my knowledge. Signature Title: MANAGER month following the month of disposition. Authority 20 AAC 25.235. 9903 FORM 10-422 REVISED.xIs/FORM 10.422 ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING OR VENTING INCIDENTS CGF March-1999 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING OR VENTING EVENTS GREATER THAN 1 HOUR and/or GREATER THAN 5MM • Over 1 Hour/Over 5MM 0 Less 1 HR/Less 5MM 1,026 Total over/under 1 Hr/5MM 1,026 Pilot/Purge 29,769 continuous Assist 54,673 TOTAL FLARED/VENTED 85,468 ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility CENTRAL GAS FACILITY Operator ARCO ALASKA, INC. Field(s) EASTERN OPERATING AREA-PBU Month/Year of Disposition Apr-99 Disposition *Indicate contribution of each pool to total. 1. Sold 2,951,949 Pool Natne Code Percent 2. Reinjected 14,925,833 PRUDHOE 640150 loo 3. Flared or vented less than 1 hour 3,160 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 8,100 5. Pilot and Purge 30,558 6. Used for lease operations Fuel Assist 2,919,506 66,544 7. Other 0 ............................................................ Offcial F1sB Only-~Flaruig:;~itifhorization:~;:1: hr .:.:.:::.:::::::::::::: TOTAL items 1 - 7 20,905,650 1. Safety MCF 8. NGL gas equivalent produced 2,951,949 2. Lease Use MCF 9. Purchased gas 0 3. Conserv. Purposes MCF 10. Transferred from: CCP 22,441,249 Commissioner Date 11. Transferred to: FSl, FS2, FS3 1,535,599 Note: All volumes must be corrected to Remarks: pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the I hereby certify that the foregoing is true and correct to the best of my knowledge. Signature: f~~ Title: MANAGER C_s K.~ _ _._ - month following the month of disposifion. Authority 20 AAC 25.235. Form 10-422 (Revised 4/9 '"~ ~~ 9904 FORM 10-422.x1s/FORM 10-422 ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING OR VENTING INCIDENTS CGF April-1999 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING OR VENTING EVENTS GREATER THAN 1 HOUR and/or GREATER THAN 5MM 04/21 /99 0836-0944 8,100 Process upset in MI T/C 1805 section of facility due to UNPLANNED Stabilized facility process and operation • 0945-1100 instrumentation malfunction. and restarted T/C 1805. (Sequence of events is attached to flare report.) Over 1 Hour/OverSMM 8,100 Less 1 HR/Less 5MM 3,160 Total over/under 1 Hr/5MM 11,260 Pilot/Purge 30,558 continuous Assisf 66,544 TOTAL FLARED/VENTED 108,362 FROM: pRCO RLASKR FRX NO.: 92651566 07-22-99 10:166 P.02 • . , ARCS Alaska, Ine. Internal Corty®pondoncs pate: 4-21-99 Subject: MI T/C1805 Shutdown and Flaring Details Ftom/Location: CGF Lead Operattir Telephone: 8688 TolLocation: J. Fritts Sequence of Events for 4-21-88 0836 hours: 1805 shutdown on governor failure due iv unstable fuel gas pressure. Flare rate approximately 200 mmscfid. 0840 hours: Began process adjustments to reduce MI production. Flare rate dawn to approximately 84 mmscfd. 0900 hours: 0915 hours: o Ess adjustments to educe. MI production. dy C pr o tirnue 0940 hours: 1805 shutdown on high MP suction drum during loading. 0944 hours: Flare valve clo~cd. 0945 hours: Flare valve re-opened. 1000 hours: Started 1805. 1033 hours: 1805 shutdown vn high interstage pressure during loading. 1055 hours: 1805 successfully started and loaded. 1100 hours; Flare valves closed. RECEIVED JUG 22 ~9gg Alaska Oil & Gas Cons. Commission Anchorage (eluovl~l a>tow9 xaelq P~ ~ Q1eU1 t9 ~ISN'~olatrptooa a~6t1dwo~ 191uewuCnnt/~ P1®f~ :fl+uBdn~! 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Field(s) EASTERN OPERATING AREA-PBU Month/Year of Disposition May-99 Disposition *Indicate contribution of each pool to total. 1. Sold 3,168,863 Pool Name Code Percent 2. Reinjected 13,760,899 PRUDHOE 640150 loo 3. Flared or vented less than 1 hour 24,951 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 0 5. Pilot and Purge 29,052 6. Used far lease operaflons Fuel Assist 3,033,713 70,119 7. Other 0 ............................................................ Off cial.IJse:Only-:.Flaring::~iitlioiitiatioii:>::1:.1ir .:::.:.:.:.::::::>:.:.:.:.:.:.:.:.: TOTAL items 1 - 7 20,087,597 1. Safety MCF 8. NGL gas equivalent produced 3,168,863 2. Lease Use MCF 9. Purchased gas 0 3. Conserv. Purposes MCF 10. Transferred from: CCP 21,658,464 a v Commissioner Date `~`~ 11. Transferred to: FS1, FS2, FS3 1,570,867 ~' Note: All volumes must be corrected to ;~~~ 1' Remarks: ~~_ pressure of 14.65 psia and to a temperature of ~ ,< 60 degrees F. Report due by the 20th of the ~ ?_ °- I hereby ceiti that the forego' is true and correct to the best of my knowledge. Signature: Title: MANAGER u~ month following the month of disposifion. - - Authority 20 AAC 25.235. Form 10-422 (Revi~S) 9905 FORM 10-422.x1s/FORM 10-422 s'. . °' .~ ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING OR VENTING INCIDENTS CGF May-1999 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING OR VENTING EVENTS GREATER THAN 1 HOUR and/or GREATER THAN 5MM 05/20/99 0000-0058 9,901 Shut down T/C 1805 for bundle change-out for MIX PLANNED Stabilized facility process and operation. overhaul, Adjusted process for 1 MI T/C operation, warmed up chillers and LTS bottoms. Field cut gas 200MM. 05/22/99 0250-0340 8,765 Shut down T/C 1855 due to instrumentation malfunctior UNPLANNED Corrected E&I fluctuation and restarted T/C 1855. Over 1 Hour/Over 5MM 18,666 Less 1 HR/Less 5MM 6,285 Total over/under 1 Hr/5MM 24,951 Pilot/Purge 29,052 continuous Assist 70,119 TOTAL FLARED/VENTED 124,122 ~i ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION '~,`,~ ~ ``:- ~~~ Facility CENTRAL GAS FACILITY Operator ARCO ALASKA, INC. Field(s) EASTERN OPERATING AREA-PBU Month/Year of Disposition Jun-99 ~~~a~Ct1 ~I~ ~ G$S ~Os ~L Disposition *Indicate contribution of each pool to total. 1. Sold 2,643,662 Pool Name Code Percent 2. Reinjected 10,468,163 PRUDHOE 640150 100 3. Flared or vented less than 1 hour 18,816 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 4,977 5. Pilot and Purge 28,329 6. Used for lease operations Fuel Assist 2,652,568 65,618 7. Other 0 ............. .............................................. ............................................................ Offcial ~18e Qritg-Flaiiiig:;llutho~izatiofi:~:l:fir .:::::::::::::.:.::::::::: TOTAL items 1 - 7 15,882,133 1. Safety MCF 8. NGL gas equivalent produced 2,643,662 2. Lease Use MCF 9. Purchased gas 0 3. Conserv. Purposes MCF 10. Transferred from: CCP 17,340,944 Commissioner Date 11. Transferred to: FS1, FS2, FS3 1,458,811 Note: All volumes must be corrected to Remarks: pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the I hereby certify that the foregoing is true and correct to the best of my knowledge. Signatur Title: MANAGER month following the month of disposition. Authority 20 AAC 25.235. Form 10-422 (Revised~5) ~ `~~ ~~ 9906 FORM 10-422.x1s/FORM 10-422 ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING OR VENTING INCIDENTS CGF June-1999 DATE TIME VOLUME MCF PLANNED DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING OR VENTING EVENTS GREATER THAN 1 HOUR and/or GREATER THAN 5MM 06/16/99 1130-1900 2,680 Facility Maintenance, Surge testing T/C 1805. Purge foi UNPLANNED Surge testing halted due to low stage • 0200-2300 consistent gas compostition from HP Suction Drum recycle problems. 06/19/99 0815-1715 2,297 Facility Maintenance. Surge testing T/C 1805. Purge foi UNPLANNED Surge test completed. T/C 1805 loaded. consistent gas compostition from HP Suction Drum Over 1 Hour/Over 5MM 4,977 Less 1 HR/Less 5MM 18,816 Total over/under 1 Hr/5MM 23,793 Pilot/Purge 28,329 continuous Assist 65,618 TOTAL FLARED/VENTED 117,740 Prudhoe Bay EOA Flare Event 6-16&19-99 • • Subject: Prudhoe Bay EOA Flare Event 6-16&19-99 Date: Mon, 28 Jun 1999 08:11:05 -0900 From: "EOC Supervisor PRB" <P2013@mail.aai.arco.com> To: Wendy_Mahan@admin.state.ak.us Wendy, As follow-up to our conversation today regarding the long duration/low flare rate events at the CGF on 6/16&19 of this month, we will be providing the following 'supplemental information' for the monthly Gas Disposition Report. Please let us know if you need additional information: Date: June 16, 1999 Duration: 630 minutes Volume: 2,680 mscf This flaring was associated with surge testing of the CGF 1805 miscible injectant compressor train following its upgrade as part of the MIX Project. It is important to test with the same gas composition the compressor processes in normal operation. During the testing, it became clear that the buffer gas in the shaft seal system (part of the safety system design) was leaning out the gas composition and would require the bleeding of gas out of the system during the test to maintain a stable process gas composition in the compressor. The long duration was due to problems experienced with the system flare valves and recycle valves that made it difficult to obtain operational stability. Date: June 19, 1999 Duration: 540 minutes Volume: 2,297 mscf See description of 6/16/99 event. As an aside, we will also be performing similar surge valve testing on the second MI compressor, unit 1855, following it's upgrade late in the month of July or early August. Efforts will be made to minimize the flaring associated with this unit's surge testing. Thank You, Paul Andrews EOC Supervisor 7/1/99 7:46 AM lofl June Flare Incidents Subject: June Flare Incidents Date: Fri, 25 Jun 1999 16:37:17 -0900 From: "EOC Supervisor PRB" <P2013@mail.aai.arco.com> To: Wendy_Mahan@admin.state.ak.us Wendy, I'm sorry to bother you during your maternity leave, but I wanted to discuss with you the wording in the Gas Disposition Report for two flare events that took place this month at the CGF. I attempted to send you an e-mail a couple days ago from my Hotmail account (I was taking a class in Anchorage) but apparently it didn't go through. The reason for wanting to discuss these with you is that we had two separate events to report (one on 6/16 and one on 6/19) that will look odd on the supplemental information part of the report due to their long duration/low rate/low volume. I'm wanting to anticipate any questions you may have over these events and get the correct information to you and the AOGCC up front. Upon my return today I called and left messages at both your work and home numbers. When it is convenient for you please give me a call at work (659-5566). Thank You, Paul Andrews EOC Supervisor 7/1/99 7:46 AM lofl ~.. ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION C~ • Facility CENTRAL GAS FACILITY Operator ARCO ALASKA, INC. Field(s) Month/Year of Disposition EASTERN OPERATING AREA-PBU 7u1-99 Disposition *Indicate contribution of each pool to total. 1. Sold 2,602,373 Pool Name Code Percent 2. Reinjected 9,874,270 PRUDHOE 640150 100 3. Flared or vented less than 1 hour 7,354 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 0 5. Pilot and Purge 28,954 6. Used for lease operations Fuel Assist 2,687,352 66,977 7. Other 0 Aii ' ~~ ~~ Off ci~li?s~(3i~lY-~ ::::.......t~-oat~~....1.&t...: TOTAL items 1 - 7 15,267,280 1. Safety MCF S. NGL gas equivalent produced 2,602,373 2. Lease Use MCF 9. Ptttchased gas 0 3. Conserv. Purposes MCF 10. Transferred from: CCP 16,770,416 Commissioner Date 11. Transferred to: FS1, FS2, FS3 1,503,136 Note: All volumes must be corrected to Remarks: pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the I hereby certify that the foregoing is tine d correct to the best of my knowledge. Signature: Title: MANAGER month following the month of disposition. Authority 20 AAC 25.235. Form 10-422 (Revised ~) ~--s ~'"' J~ w r° v ~ spa ~ t:'~ ~. ~ ~ s ~ t ..._~ ~° {J z cs -A ~> +=ta u~ ~,.;.a,,, <rs- . c,.` 9907 FORM 10-422.bs/FORM 10-422 -s ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING OR VENTING INCIDENTS CGF July-1999 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING OR VENTING EVENTS GREATER THAN 1 HOUR and/or GREATER THAN 5MM Over 1 Hour/Over 5MM 0 less 1 HR/Less 5MM 7,354 Total over/under 1 Hr/5MM 7,354 Pilot/Purge 28,954 continuous Assist 66,977 TOTAL FLARED/VENTED 103,285 ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION • • Facility CENTRAL GAS FACILITY Operator ARCO ALASKA, INC. Field(s) Month/Year of Disposition EASTERN OPERATING ARBA-PBU Aug-99 Disposition *Indicate contribution of each pool to total. 1. Sold 2,778,437 Pool Name Code Percent 2. Reinjected 13,571,492 PRUDHOE 640150 100 3. Flared or vented less than 1 hour 18,904 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 16,145 5. Pilot and Purge 30,700 6. Used for lease operations Fuel Assist 2,551,186 51,546 e 7. Oth r 0 : t3l~z~z~1U o~ayvrig. A.. ~I?or~i~oxt....1, hr.: TOTAL items 1 - 7 19,018,410 1. Safety MCF 8. NGL gas equivalent produced 2,778,437 Z. Lease Use MCF 9. Purchased gas 0 3. Conserv. Purposes MCF 10. Transferred from: CCP 20,566,472 Commissioner Date 11. Transferred to: FS 1, FS2, FS3 1,548,062 Note: All volumes must be corrected to Remarks: pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the I hereby certify that the foregoing is true and correct to the best of my knowledge. Signature: ~7\,.~~ Title: MANAGER month following the month of disposition Authority 20 AAC 25.235. Form 10-422 (Revised 4/95) u 9908 FORM 10-422.~ds/FORM 10-422 ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING OR VENTING INCIDENTS CGF August-1999 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING OR VENTING EVENTS GREATER THAN 1 HOUR and/or GREATER THAN 5MM 08/03/99 1030-2000 2,300 Surge testing of the MI compressor Unit 1855 as part PLANNED Testing was complete in one event, of the MIX upgrade to the unit. 08/05/99 0718-0918 13,845 Process upset in the hot oil system section of the facility, UNPLANNED Flare was reduced by bypassing feedga: (Intermittent- 110 min.) Both MI compressors shut down because of plant upset. around LTS section of plant. Flare was eliminated affer first MI was started and loaded. 08/08/99 0734-0828 7,325 CCP shut down T/C 1878 due to an instrumentation UNPLANNED Reduced inlet gas rates. malfunction, and we flared for CCP 08/11 /99 1542-1635 7,105 CCP 1878 shutdown due to recycle valve malfunction. UNPLANNED Restarted T/C 1878. ver 1 Hour/Over 5MM 30,575 ess 1 HR/Less 5MM 4,474 Total over/under 1 Hr/5MM 35,049 Pilot/Purge 30,700 Continuous Assist 51,546 TOTAL FLARED/VENTED 1 T7,295 Prudhoe Bay EOA Flare Event 8/3/99 • Subject: Prudhoe Bay EOA Flare Event 8/3/99 Date: Fri, 6 Aug 1999 19:00:41 -0900 From: "EOC Supervisor PRB" <P2013@mail.aai.arco.com> To: Wendy_Mahan@admin.state.ak.us Wendy, This note is to let you be aware of a flare event at the Prudhoe Bay Central Gas Facility on 8/3/99 that was the result of the surge testing of the MI compressor Unit 1855 as part of the MIX upgrade to this unit. This event was what was referred to at the end of the 6/28/99 note below. The facility was able to complete the testing in one event, rather than the two events it took to complete the testing of Unit 1805 in June. Date: August 3, 1999 Duration: 570 minutes Volume: 2,300 mscf See description of 6/16/99 event. This completes the surge testing for this unit at this time. As a result of this testing (and that done in June) problems were identified and surge valve internal part replacement will be necessary. This is scheduled to occur next month (September) during a scheduled outage. Similar testing will be required on each compressor again to verify proper performance of the modified surge valves. Please let me know if you need any further information. Thank You, Paul Andrews EOC Supervisor ---------------------- Forwarded by EOC Supervisor PRB/AAI/ARCO on 08/06/99 06:32 PM --------------------------- a.ARCO Alaska, Inc. EOC Supervisor PRB 06/28/99 08:11 AM To: Wendy_MahanCadmin.state.ak.us cc: Subject: Prudhoe Bay EOA Flare Event 6-16&19-99 Wendy, As follow-up to our conversation today regarding the long duration/low flare rate events at the CGF on 6/16&19 of this month, we will be providing the following 'supplemental information' for the monthly Gas Disposition Report. Please let us know if you need additional information: Date: June 16, 1999 Duration: 630 minutes Volume: 2,680 mscf This flaring was associated with surge testing of the CGF 1805 miscible injectant compressor train following its upgrade as part of the MIX Project. It is important to test with the same gas composition the compressor processes in normal operation. During the testing, it became clear that the buffer gas in the shaft seal system (part of the safety system design) was leaning out the gas composition and would require the bleeding of gas out of the system during the test to maintain a stable process gas composition in the compressor. The long duration was due to problems experienced with the system flare valves and 1 of 2 4/6/00 10:52 AM Prudhoe Bay EOA Flare Event 8/3/99 • recycle valves that made it difficult to obtain operational stability. Date: June 19, 1999 Duration: 540 minutes Volume: 2,297 mscf See description of 6/16/99 event. As an aside, we will also be performing similar surge valve testing on the second MI compressor, unit 1855, following it's upgrade late in the month of July or early August. Efforts will be made to minimize the flaring associated with this unit's surge testing. Thank You, Paul Andrews EOC Supervisor 2 of 2 4/6/00 10:52 AM ALASKA OIL AND GAS CONSERVATION COMNIISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION ~~ • Facility CENTRAL GAS FACILITY Operator ARCO ALASKA, INC. Field(s) EASTERN OPERATING AREA-PBU Month/Year of Disposition Sep-99 Disposifion *Indicate contribution of each pool to total. 1. Sold 2,492,296 Pool Name Code Percent 2. Reinjected 12,585,209 PRUDHOE 640150 100 3. Flared or vented less than 1 hour 42,587 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 20,803 5. Pilot and Purge 27,811 6. Used for lease operations Fuel Assist 2,261,945 65,048 7.Other 0 ............................................................ ........................................................... OFficial:.ilse f7ai1~~=Ftariag a~iithorizaYiori.>:1 air .::::::::::::::::::: TOTAL items 1 - 7 17,495,699 1. Safety MCF 8. NGL gas equivalent produced 2,492,296 2. Lease Use MCF 9. Purchased gas 0 3. Conserv. Purposes MCF 10. Transferred from: CCP 18,981,693 Commissioner Date 11. Transferred to: FSl, FS2, FS3 1,485,994 Note: All volumes must be corrected to Remarks: pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the I hereby certify that the foregoing is true and correct to the best of my knowledge. Signature: ~ Title: MANAGER month following the month of disposifion. n ~ ~ ~ ~ , t Authority 20 AAC 25.235. K V Form 10-422 (Revised4/95) 9909 FORM 10-422.x1s/FORM 10-422 L ~~ t ~g~ Oi! &A~GnnaSt~ns.C~t4 /111~~~ ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING OR VENTING INCIDENTS CGF September-1999 DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE FLARING OR VENTING EVENTS GREATER THAN 1 HOUR and/or GREATER THAN 5MM 09/10/99 2230-2400 2,944 S/D T/C 1805;1855. TAPS PIPELINE SLOW DOWN • F85 RECYLCLE VALVE TRIM CHANGE/STABILIZER 1 & 2 DOWN FOR REBOILER LINE REPAIRS. SHUTDOWN-FLARING FOR PLANT SHUT DOWN 09/12/99 1410-1530 3,290 ELECTRICAL MALFUNCTION. BESD WIRE FOR PLANT CAME LOOSE FROM TERMINAL WIRE STRIP 1120-1320 585 S/D T/C 1802. INSTRUMENTATION MALFUNCTION. Intermittant - 85 min STARTING COMPRESSOR AFTER PLANT SHUTDOWN 09/13/99 0020-0120 7,303 S/D T/C 1805. HIGH DISCHARGE PRESSURE ON EOA MI LINE TO DRILL SITES 09/14/99 0530-0645 13,984 S/D T/C 1805. HIGH PRESSURE FUEL GAS CONTROL PROBLEM r ~ ~I Over 1 Hour/Over 5MM 28,106 Less 1 HR/Less 5MM 35,284 Total over/under 1 Hr/5MM 63,390 Pilot/Purge 27,811 Continuous Assist 65,048 PLANNED UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE PLANNED REDUCED INLET GAS RATES UNPLANNED CORRECTED E&I FAILURE PLANNED STARTED T/C 1802. CORRECTED E&I FLUCTUATION. UNPLANNED RESTARTED 1805.M1 WAS INJECTED TO WGI DRILL SITE WHILE MI DRILL SITES WERE OPENING WELLS FOR INJECTION UNPLANNED RESTARTED 1805 MISCIBLE GAS INJ. FOUND INDICATOR ON MAUAL BLOCK VALVE ACTIVATOR IN WRONG POSITION VALVE WAS CLOSED. ONLY ONE CONTROLLER IN SERVICE TOTAL FLARED/VENTED 156,249 • ~ ~' ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility CENTRAL GAS FACILITY Operator ARCO ALASKA, INC. Field(s) EASTERN OPERATING AREA-PBU Month/Year of Disposition Oct-99 Disposition *Indicale contribution of each pool to total. 1. Sold 3,225,447 Pool Name Code Percent 2. Reinjected 15,440,430 PRUDHOE 640150 100 3. Flared or vented less than 1 hour 73,758 4. red or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 44,662 5. Pilot and Purge 28,408 6. Used for lease operations Fuel Assist 3,190,356 67,336 7.Other 0 ................................................................. Official:Us~:Only-:~`Taring Autliorizatiori:~a hr::: >: >::~:< ::::::::: TOTAL items 1- 7 22,070,397 1. Safety MCF 8. NGL gas equivalentproduced 3,225,447 2. Lease Use MCF 9 ~hased gas 0 3. Conserv. Purposes MCF 10. Transferred from: CCP 23,762,443 Commissioner Date 11. Transferred to: FS1, FS2, FS3 1,692,046 Note: All volumes must be corrected to Remarks: pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the I hereby certify that the foregoing is hue and correct to the best of my knowledge. Signature: ~--~~ Title: MANAGER month following the month of disposition. Authority 20 AAC 25.235. Form 10-422 (Revised 4/95) 9910 FORM 10-422.x1s/FORM 10-422 ARCO ALASKA, INC. CONSERVATION ORDER N0.219 GAS FLARING OR VENTING INCIDENTS CGF October-1999 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING OR VENTING EVENTS GREATER THAN 1 HOUR and/or GREATER THAN 5MM 10/07/99 0340-0415 13,705 203 FLARE VALVE OPENED DUE TO PLANT POWER UNPLANNED 203 CLOSED AS PLANT PRESSURE • FAILURE. RETURNED TO NORMAL. 10/10/99 1905-2125 15,635 SD T/C 1805. 1805 SD ON HIGH VIBRATION, H.I. UNPLANNED RESTARTED 1805. REPLACED TRANS- VIBRATION MONITORING DEVICE MALFUNCTIONED DUCER, OPENED MAINTENANCE BY- CAUSINGTURBINE SD. PASS. WARMED CHILLERS & LTS'S TO MINIMIZE FLARING. 10/19/99 0645-1010 14,100 SD 1855 FOR POWER TUBBING OVERPSEED SHUT UNPLANNED RESTARTED T/C 1855. CORRECTED E&I DOWN. 1855 MI SD WHEN POWER SUPPLY FAILURE FAILURE. REPLACED POWER SUPPLIES. CAUSED 51 P466SV TO OPEN RESTARTED T/C 1855. 10/30/99 1138-1230 21,158 ELECTRICAL MALFUNCTION AT OTHER FACILITY. UNPLANNED REDUCED INLET GAS RATES. EOC CUT EXCESSIVE INLET GAS RATES INTO FACILITY. FIELD GAS OFF TAKE BY SHUTTING IN CCP LOST SEVERAL MACHINES CAUSING WELLS. EXCESSIVE FSIM PRESSURE. 10/30/99 1300-1325 9,361 ELECTRICAL MALFUNCTION AT OTHER FACILITY. UNPLANNED .REDUCED INLET GAS RATES, EOC CUT • EXCESSIVE INLET GAS RATES INTO FACILITY. FIELD GAS OFF TAKE BY SHUTTING IN CCP LOST SEVERAL MACHINES CAUSING WELLS. EXCESSIVE FSIM PRESSURE. 10/31 /99 0746-1018 14,927 SUTDOWN T/C 1855 DUE TO INSTRUMENTATION UNPLANNED CTUATION AND D O MALFUNCTION. (SEE ATTACHED SHEET OF EVENTS.) C 1855 TARTED R( Over 1 Hour/Over 5MM 88,886 Less 1 HR/Less 5MM 29,534 Total over/under 1 Hr/5MM 118,420 Piiot/Purge 28,408 Continuous Assist 67,336 TOTAL FLARED/VENTED 214,164 R E C E I V E D ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION .. ~,. ~ c unn Facility `- ' ~n Operator ARCO ALASKA, INC. Field(s) EASTERN OPERATING AREA-PBU Month/Year of Disposition Nov-99 ~C ~`~""~isition *Indicate contribution of each pool to total 1. Sold 2,979,313 Pool Name Code Percent 2. Reinjected 14,073,431 PRUDHOE 640150 100 3. Flared or vented less than 1 hour 25,591 4. Flared or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 18,474 5. Pilot and Purge 28,115 6. Used for lease operations Fuel Assist 2,759,253 67,309 7. Other 0 ................................................................. Official:Us~:Only-: Flariitg:Autlionzatiori:~:1 hr;:::. TOTAL items 1 - 7 19,951,486 1. Safety MCF 8. NGL gas equivalentproduced 2,979,313 2. Lease Use MCF . Purchased gas 0 3. Conserv. Purposes MCF 10. Transferred from: CCP 21,612,254 Commissioner Date 11. Transferred to: FS1, FS2, FS3 1,660,768 Note: All volumes must be corrected to Remarks: pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the I hereby certify that the foregoing is true and correct to the best of my knowledge. r Signature: '~ Title: MANAGER month following the month of disposition. Authority 20 AAC 25.235. Form 10-422 (Revised 4/95) ~`-~ 9911 FORM 10-422.x1s/FORM 10-422 ARCO ALASKA, INC. CONSERVATION ORDER NO. 219 GAS FLARING OR VENTING INCIDENTS CGF November-1999 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING OR VENTING EVENTS GREATER THAN 1 HOUR and/or GREATER THAN 5MM 11/17/99 0744-0855 3,001 Emergency Shutdown; Electrical malfunction at other UNPLANNED Reduced inlet gas rates. facility; Excessive inlet gas rates into facility; faulty shutdown on trasformer; electrical substation at CCP shorted across isulators & caused power disruption at CCP which lost several machines. 11/17/99 1315-1443 1,922 Emergency Shutdown; Electrical malfunction at other UNPLANNED Restarted 1805; Reduced inlet gas rates. (intermittent-69min) facility; Excessive inlet gas rates into facility; faulty shutdown on trasformer; electrical substation at CCP shorted across isulators 8c caused power failure 11 /19/99 0735-0944 2,428 Electrical malfunction. Power failure caused both Mi trc UNPLANNED Restarted 1805. Bypassed plant to (intermittent-118min) to shutdown. minimize flare. 11 /20/99 0848-1012 5,656 Electrical malfunction. Restart of plant after plant UNPLANNED Restarted T/C 1805 MI. shutdown due to power failure. 11 /26/99 0825-0927 5,467 Instrumentation malfunction. T/C 1885 tripped off line UNPLANNED LTS trains were warmed up to minimize due to N3 overspeed trip. flaring while Instrument Department look . at this recurring problem. The found a loose wire on N3 control card. Connecti~ was tightened up and unit restarted, Over 1 Hour/Over 5MM 18,474 Less 1 HR/Less 5MM 25,591 Total over/under 1 Hr/5MM 44,065 Pilot/Purge 28,115 Continuous Assist 67,309 TOTAL FLARED/VENTED 139,489 a ' ~ ALASKA OIL AND GAS CONSERVATION COMMISSION FACILITY REPORT OF PRODUCED GAS DISPOSITION Facility CENTRAL GAS FACILITY Operator ARCO ALASKA, INC. Field(s) EASTERN OPERATING AREA-PBU Month/Year of Disposition Dec-99 Disposition *Indicate contribution of each pool to total. 1. Sold 3,332,264 Pool Name Code Percent 2. Reinjected 15,855,952 PRUDHOE 640150 100 3. Flared or vented less than 1 hour 9,214 4.. ed or vented greater than 1 hour (Supplemental report required--See 20 AAC 25.235) 20,586 5. Pilot and Purge 29,423 6. Used for lease operations Fuel Assist 3,244,585 58,284 7. Other 0 Official Use Only _Flaring; Autlivrization > t fir:: . TOTAL items 1 - 7 22,550,308 1. Safety MCF 8. NGL gas equivalent produced 3,332,264 2. Lease Use MCF 9~hased gas ` ~" °~"` ~ ~`" 1 ' ~ ~ 0 3. Conserv. Purposes MCF 10. Transferred from: CCP 24,341,720 f ' Com>'nissioner Date ~ ~ , ," 11. Transferred to: FS1, FS2, FS3 1,791,412 Note: All volumes must be corrected to Remarks: pressure of 14.65 psia and to a temperature of 60 degrees F. Report due by the 20th of the I hereby certify that the foregoing is true and correct to the best of my knowledge. Signature: ~`~~-/~~ Title: MANAGER month following the month of disposition. Authority 20 AAC 25.235. Form 10-422 (Revised 4/95) ~.__- 9912 FORM 10-422.x1s/FORM 10-422 ARCO ALASKA, INC. CONSERVATION ORDER NO. 219 GAS FLARING OR VENTING INCIDENTS CGF December-1999 PLANNED DATE TIME VOLUME MCF DESCRIPTION OF INCIDENTS & CAUSE UNPLANNED ACTION TAKEN TO ELIMINATE CAUSE FLARING OR VENTING EVENTS GREATER THAN 1 HOUR and/or GREATER THAN 5MM 12/23/99 0655-1120 20,586 T/C 1855 shut down b separate times due to different UNPLANNED Started changing process to minimize instrumentation problems flaring. Began increasing LTS bottoms temperature. Maintenance found a bac relay on seal oil overhead tank level valy See sequence of even#s attached to flar report. Over 1 Hour/Over 5MM 20,586 Less 1 HR/Less 5MM 9,214 Total over/under 1 Hr/5MM 29,800 Pilot/Purge 29,493 ontinuous Assist 58,284 TOTAL FLARED/VENTED 117,577 r : ::' x . _ _ F' kw~a~f 14'..... ',i~ ~ 04-06-00 13:04 From-EOC 9076595917 T-510 P.O1/02 F-583 • • ARCO ALASKA TN'C. pRUpHOE BAY EASTERN OFFTAKE CENTER (EOC) SEND To: ~- W ~ ~~y ~,~~A~ FROM 1roaPgu NUMBER OF PAGES AFTER COVER: ^'" FSl 8732 BILLETING 8366 FS2 8405 BPX PCC 659-4436 FS3 5599 CENTRAL RESV. 263-3576 CCP 5364 FIELD MGIt/ATO 2b3-4443 CGF 8687 ATO IST'' FLR 265-336 CO'I' 5310 ATO 16r" FLR 265-6493 SIP 8792 ATO 18T" FLR/STAFF SUPT 263-4544 STP 8964 PEAS CENTER/ANCH 265-6558 GPMA 8GSS COMMENTS: ~G f ,Fc.ARl~ G 1 Z~x3 f 99 S~ Q1iEJe-E o~ ~/~xNrS: EOC FAX NUMBER 907-659-5917 &OC CONFIRMATION NUMBER 907-659-5921 f~~j~+~~vi~~(yyy~~ ((t~Pff~~~~'R-+~gy~`~0[ p~~Wi2y0 ~00y(~. $p9y+~~y ii'VGVCrG Wi3 S~ b'65N LBtlf BlTa •4d`J(S~3F3~~A?9YJB `. ~~ 04-06-00 13:04 From-EOC 9076595917 ,,_ ,-. ~ • T-510 P.02/02 F-563 MI Compres:~or I SSS Flaring 12/23/99 ~~ 1 _p6.5S-MT cram~ra&&or 1$SS tripped an N3 averspeed.l?tare valvoa open, N3 ovorspred problem r identificd_ 2' 177- 3 p-T~+~! 14355 shirt 3.07:15•Ml 1$55 SJa on HP suction drum hi Level. 4.1)-/:4S-Started cJumging process it) RtJ1111Y1Jze Haring. Bcgan increasing LTS bottoms temperature. Sr_O6:2T-1V,(] (855 start G.O8:3S-MI 1855 SD an HP suction drtttn hi level. TO9;13-1V1I l 855 atart- 8.•()9:2p-Mi ]855 5D un Iti exhaust temperature. ~09:~-Ml 1 NSS start-eltanging prc~ce.~s to leap up gas to sue[icin of compreggpf. Aml~ient tempcrxt degrees. ] U.1 U:4O• Ml 1 R,Sg SI7 an IiP sea] oil tank law law level. i 1, 14AQ-started making process changes to close; Ilat+c valves. I2.Maint. working an seal oil etiverhend tank le:vcl valve probte:ro.1~ouoJ ce bud relay_ ti~ 13.11:20-FJaru valves closed #4' 11:2U- MI ]43SS start. Cramp. a~ idle tmtil relay rcplac~d_ 1 S, 14:25-1MI 1855 SD on i'94AV I.P compmssor valve out of position. ~fr14A.5-Ml 1855 s[ar[ +~ 1715:30-MT 1855 SD on ~cxrboxJutut hi vibration. ~:1s:as-lvu 185s ~c ly. ]6:4S•MI 18551oaded. MFR D a 2vE.i~ ~~;S~Gd ~:1 t~ Ada ~~it~. ~r3#?ItT19~~,~t] ~~C U 7