ML19209B617: Difference between revisions
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i 18E/P Powdex Bypass Viv. E/P FC-7 M.F.P. A Recire. Flow FC-8 M.F.P. B Recire. Flow LC-9 Hotwell High Level Reject , | i 18E/P Powdex Bypass Viv. E/P FC-7 M.F.P. A Recire. Flow FC-8 M.F.P. B Recire. Flow LC-9 Hotwell High Level Reject , | ||
i SP-V2A E/P S.U. FW viv. A E/P i SP-VlA E/P Main FW viv. A E/P SP-V3 A/B E/P B/B C/B Turbine B.P. Vlv. E/P's A/A B/A C/A ICS-36A E/P MFP A Speed Charger E/P ICS-36B E/P MFP B Speed Charger E/P ' | i SP-V2A E/P S.U. FW viv. A E/P i SP-VlA E/P Main FW viv. A E/P SP-V3 A/B E/P B/B C/B Turbine B.P. Vlv. E/P's A/A B/A C/A ICS-36A E/P MFP A Speed Charger E/P ICS-36B E/P MFP B Speed Charger E/P ' | ||
: 5. Backup Instrument Air Compress.,r IA-P2B starts'to supply l air to the following valves: | : 5. Backup Instrument Air Compress.,r IA-P2B starts'to supply l air to the following valves: | ||
FW-V16R.. FW-V17B, EF-V30 A&B, MS-V6, EF-V8B, MS-V4A&B 2.0 1123 038 | FW-V16R.. FW-V17B, EF-V30 A&B, MS-V6, EF-V8B, MS-V4A&B 2.0 1123 038 | ||
Line 67: | Line 66: | ||
: 1. Reset thermal overloads and attempt to restart IA-PlA(B) and/or backup compressors. | : 1. Reset thermal overloads and attempt to restart IA-PlA(B) and/or backup compressors. | ||
: 2. If RC pumps have not tripped, take local manual control of MU-V20 in the open position. | : 2. If RC pumps have not tripped, take local manual control of MU-V20 in the open position. | ||
: 3. Trip reactor when instrument air pressure drops to 60 psig and complete the immediate manual action in the 1 | : 3. Trip reactor when instrument air pressure drops to 60 psig and complete the immediate manual action in the 1 Reactor Trip Procedure 1202-4. | ||
Reactor Trip Procedure 1202-4. | |||
3.0 ll | 3.0 ll | ||
Line 99: | Line 96: | ||
5.0 1123 041 | 5.0 1123 041 | ||
1202-36 Revision 6 TABLE I 09/06/79 Air Operated Air Fail Valve No. Position MU-V3 Closed MU-V4 Closed MU-V6A Closed MU-V6B Closed MU-V9 Closed MU-V10 Closed MU-VilA Closed MU-VllB Closed MU-V17 Closed MU-V18 Closed MU-V20 Closed MU-V26 Closed MU-V32 Open MU-V51 Closed IC-V3 Closed IC-V4 Closed IC-V5 Fail As Is IC-V6 Closed IC-V74 Open DC-V19A Open DC-Vl9B Open FW-V17A Fail As Is FW-V17B Fail As Is EF-V30A Fail As Is EF-V30B Fail As Is 6.0 ) ) 2 j' ) | 1202-36 Revision 6 TABLE I 09/06/79 Air Operated Air Fail Valve No. Position MU-V3 Closed MU-V4 Closed MU-V6A Closed MU-V6B Closed MU-V9 Closed MU-V10 Closed MU-VilA Closed MU-VllB Closed MU-V17 Closed MU-V18 Closed MU-V20 Closed MU-V26 Closed MU-V32 Open MU-V51 Closed IC-V3 Closed IC-V4 Closed IC-V5 Fail As Is IC-V6 Closed IC-V74 Open DC-V19A Open DC-Vl9B Open FW-V17A Fail As Is FW-V17B Fail As Is EF-V30A Fail As Is EF-V30B Fail As Is 6.0 ) ) 2 j' )(( 2 | ||
1202-36 Revision 6 TABLE I (Cont'd) 09/06/79 Air Operated Air Fai' Valve No. Position WDG-V24 Closed WDG-V25 Closed WDG-V26 Closed , | 1202-36 Revision 6 TABLE I (Cont'd) 09/06/79 Air Operated Air Fai' Valve No. Position WDG-V24 Closed WDG-V25 Closed WDG-V26 Closed , |
Latest revision as of 19:16, 16 March 2020
ML19209B617 | |
Person / Time | |
---|---|
Site: | Three Mile Island |
Issue date: | 09/06/1979 |
From: | METROPOLITAN EDISON CO. |
To: | |
References | |
1202-36, NUDOCS 7910100230 | |
Download: ML19209B617 (9) | |
Text
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1202-36 Revision 6 09/06/79 THREE MILE ISLAND NUCLEAR STATIONPORC CH UNIT #1 EMERGENCY PROCEDURE 1202-36 lVITI; l h I-- -
LOSS OF IPSTRUMENT AIR , ,,
Table of Effective Pages CONTROL _ED~ COPY Paoe Date Revision Pace Dste Revision Paae Date R evision 1.0 09/06/79 6 26.0 51.0 2.0 09/06/79 6 27.0 52.0 3.0 09/06/79 6 28.0 53.0 4.0 09/06/79 6 29.0 54.0 5.0 09/06/79 6 30.0 55.0 6.0 09/06/79 6 31.0 56.0 7.0 09/06/79 6 32.0 57.0 8.0 09/06/79 6 33.0 #
58.0 9.0 34.0 59.0 10.0 35.0 60.0 11.0 36.0 61.0 12.0 37.0 62.0 13.0 38.0 63.0 14.0 39.0 64.0 15.0 40.0 65.0 16.0 41.0 66.0 17.0 42.0 67.0 18.0 43.0 68.0 19.0 44.0 69.0 20.0 , 45.0 70.0 21.0 46.0 71.0 22.0 47.0 72.0 23.0 48.0 73.0 24.0 as.O 74.0 25.0 50.0 75.0 Unit 1 Staff Recomme pproval Unit 2 Staff Reco me s kpproval-Approval ii Date ' Approvai // , Date Cognizantle'pt. Head Ccgnizant Oe'pt. Hesd Unit 1 RC Recommends Approval Unit 2 PORC Rec mme pprova!
$lW & Date Y Y 71 '
- i C Date
' v/ Chairman of PORC Chairma'n of PORC Unit 1 Su erintendent Approval Unit 2 Superintendent p val
/L&dli D.,e dbv hi Date y
- ii Manager Generatior: Quality Assurance Approval / Date TMe 55 4i. Rev 8/77 v9in, 33o 1107, u n36 s
. -.. - -. . . ~ . - ... .. . .
9
1202-36 Revision 6 09/06/79 THREE f1ILE ISLAND NUCLEAR STATION UNIT #1 EMERGENCY PROCEDURE 1202-36 LOSS OF INSTRUMENT AIR 36.0 Discussion The Instrument Air System is backed up by service air thru IA-V-1 '
which opens at 70 psi. If pressure continues to decrease to 60 psi, IA-V-26 will isolate the turbine-building and intermediate building headers. Backup instrument air compressors IA-P-2A(B) are l provided to supply air to critical components in the isolated sections necessary for controlled shutdown of the unit.
NOTE: This procedure would also apply in the event that piping _
failures rendered the backup systems, described above, inoperable. See Table I, fail position of air operated valves.
36.1 Symotoms
- 1. Red indicator lights for IA-P-1 A/B and SA-P-1 A/B on PL panel are "0FF".
- 2. " Instrument Air Pressure Low Turbine Area", " Instrument Air Pressure Lcd Auxiliary Building Area" and " Station Service Air Pressure Low" Annunciator Alarms sound on PL panel Annunciator "B".
- 3. Low readings at instrument air and service air pressure indicators on PL panel.
36.2 Immediate Action A. Automatic Action
- 1. IA-V1 (S. A. backup to I. A.) open 0 70 psig.
1o 1123 037
1202-36 Revision 6 09/06/79
- 2. IA-V26 (Turbine, Intermediate, Control and Out Building Supply) closes 0 60 psig.
- 3. SA-V5 (Fluid block and penetration pressurization backup) opens at 60 psig.
- 4. .
ckup Instrument Air Compressor IA-P2A starts to supply air to the following valves: l C0 4 5 C0-V51, FW-V7A, FW-V7B, FW-V16A, FW-V17A, CO-V7, CO . ', MA-V3A thru F, i
and the following inssruments:
LC-8 Hotwell Makeup ,
i 18E/P Powdex Bypass Viv. E/P FC-7 M.F.P. A Recire. Flow FC-8 M.F.P. B Recire. Flow LC-9 Hotwell High Level Reject ,
i SP-V2A E/P S.U. FW viv. A E/P i SP-VlA E/P Main FW viv. A E/P SP-V3 A/B E/P B/B C/B Turbine B.P. Vlv. E/P's A/A B/A C/A ICS-36A E/P MFP A Speed Charger E/P ICS-36B E/P MFP B Speed Charger E/P '
- 5. Backup Instrument Air Compress.,r IA-P2B starts'to supply l air to the following valves:
FW-V16R.. FW-V17B, EF-V30 A&B, MS-V6, EF-V8B, MS-V4A&B 2.0 1123 038
1202-36 Revision 6 09/06/79 and the following instruments:
PC-5 E.F.P. Steam Pressure l SP-VlB E/P flain R4 Valv. B E/P SP-V2B E/P S.U. FW Viv. B E/P i SP-V4A&B E/P Atmos. Dump Viv. E/P I SP-V5A&B E/P Emerg. FW Vlv. E/P j
- 6. En.,rgency turbine F.W. pump starts on recirc due to steam inlec valves MSV13A (B) failing open.
- 8. Reactor coolant pump trip (loss of seal injection and intermediate closed cooling water) (within approximately 10 min.).
- 9. Reactor trips if RC pumps trip.
- 10. Turbine trips if reactor trips.
- 11. Loss of penetration cooling (due to damper closure).
- 12. Loss of industrial cooling to Reactor Builcling (due to RB-V7 closing).
B. Manual Action
- Denotes key parameters that shall be reverified as the first step in follow-up action.
- 1. Reset thermal overloads and attempt to restart IA-PlA(B) and/or backup compressors.
- 2. If RC pumps have not tripped, take local manual control of MU-V20 in the open position.
- 3. Trip reactor when instrument air pressure drops to 60 psig and complete the immediate manual action in the 1 Reactor Trip Procedure 1202-4.
3.0 ll
1202-36 Revision 6 09/06/79 I
- 4, If RC pumps trip, verify emergency feed pumps and EF-V30A l
& B raise steam generator level to 21 feet (50% on the I
operating range). '
- 5. Verify that the RCS is subcooled by at least 50UF.
Increase feedwater flow and makeup flow as needed to I obtain 50 UF margin.
36.3 Fol'ow-Vo Action Objective:
To provide the steps needed to remove the heat from the RCS by establishing natural circulation cooling and restoring instrument air and its backen air system.
- 1. Reverify items in manual action 1esignated with an asterisk
(*) using redundant indication where available.
- 2. When Intemediate Cooling and Seal Injection flow are lost, trip all four reactor coolant pumps.
- 3. When all four RC pumps are off verify that the emergency feed pumps start and steam generator levels are increasing to 50%.
Establish natural circulation cooling per 1102-16.
- 4. Verify locally that the backup instrument air compressors are operatingIA-P-2A(B).
- 5. Add 4814 gal. of 12,250 ppm. boron or equivalent from the Tech Spec Boric Acid Tank. (This corresponds to 906 ft3 of 8700 ppm boron.)
- 6. If pressurizer level cannot be maintained greater than 100 inches shift suction of makeup pump to BWST.
- 7. If CO-V8 fails open and condenser hotwell level is high, close C0-V13.
4.0 1123 040 l
1202-36 Revision 6 09/06/79
- 8. If decay heat closed purge tanks indicate high level, verify DC-Vl9A/B failed open due to loss of air and close DC-V20A/B to isolate purge tank makeup. '
- 9. Conth.ue attempts to restore instrument air, by starting either IA/SA.compresser.-
- 10. Total loss of plant instrument and service air will require the turbine jacking gear be manually engaged locally,
- 11. Upon restoration of instrument air, restore NS, IC and seal injection to the RCP's. Restart one RCP per loop and continue plant cooldawn.
- 12. Restore secondary plant to normal and direct steam flow to the condenser via the turbine bypass valves.
5.0 1123 041
1202-36 Revision 6 TABLE I 09/06/79 Air Operated Air Fail Valve No. Position MU-V3 Closed MU-V4 Closed MU-V6A Closed MU-V6B Closed MU-V9 Closed MU-V10 Closed MU-VilA Closed MU-VllB Closed MU-V17 Closed MU-V18 Closed MU-V20 Closed MU-V26 Closed MU-V32 Open MU-V51 Closed IC-V3 Closed IC-V4 Closed IC-V5 Fail As Is IC-V6 Closed IC-V74 Open DC-V19A Open DC-Vl9B Open FW-V17A Fail As Is FW-V17B Fail As Is EF-V30A Fail As Is EF-V30B Fail As Is 6.0 ) ) 2 j' )(( 2
1202-36 Revision 6 TABLE I (Cont'd) 09/06/79 Air Operated Air Fai' Valve No. Position WDG-V24 Closed WDG-V25 Closed WDG-V26 Closed ,
WDG-V27 Closed WDG-V28 Closed WDG-V29 Closed
~
WDG-V54 Closed WDL-V49 Closed WDL-V50 Closed WDL-V51 Closed WDL-V61 Closed WDL-V89 Closed WDL-V91 Closed WDL-V92 Closed MS-V3A Closed MS-V3B Closed MS-V3C Closed MS-V3D Closed MS-V3E Closed MS-V3F Closed MS-V13A Open MS-V138 Open FW-PlA Minimum Gov. Speed FW-PlB Minimum Gov. Speed 7.0
- p?Z 1.1li l1 s J4J ,
1202-36 Revision 6 09/06/79 TABLE I (Cont'd)
Air Operated Air fail Valve No. Position IC-V3 1. Valve can I,e Positioned open IC-V4 under loss of IC-V6 air conditions.
MU-V20 2. Valve remains pen f r at MU-V26 least 10 min.
8.0