ML20084J116
| ML20084J116 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 01/11/1973 |
| From: | Stephenson P COMMONWEALTH EDISON CO. |
| To: | Anthony Giambusso US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20084J119 | List: |
| References | |
| BBS-73-9, NUDOCS 8305120159 | |
| Download: ML20084J116 (2) | |
Text
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i Hr. A. Giambusso 3M m
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,lA U. S. Atonic Energy Co., mission Washington, D.C. 205M
Reference:
Quad-Cities !!uclear Puder,iation Dochet l!os. 50-7.54 and 50-265 License DPR-29 and 30
Dear Mr. Glanbusso:
The purpose of this let er is to provide you with more infonnation concerning the loss of flow to the Main Chimney i
Sampic System which occurred on December 22, 1972. This was reported to you by telegrca on that date as an ab-normal occurrence. After reviewing this incident and Change 4 to the Technical Specifications issued December 14, 1972, we have concluded that this was not an abnormal occurrenCO.
The sample system was inoperable due to a valving error
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from about 7:00 M unti1 8:30 AM on December 22, 1972.
This occurred when the sampic line Das isoleted in the f
s process of obtaining a monthly tritium sample and not returned to service properly. All perscancl who operate the sample system have been instructed to notify the control room prior to the interrupt!on of any process sampic _line and again when the system has been returned to nonrial.
Technical Specification 3.8.G allows the chimney monitoring system to be Inoperable for up to 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> provided that the reactors are operating under steady state conditions and both alr ejector of f gas monitors and continuous air monitors are operating. During the period that the chimney sampic system was inoperable all air ejector off gas monitors and continuous air monitors were operable. Both units were at I
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Mr. A. Giambusso January 11, 1973
- a steady power level with release rates determined to be
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9800 uCi/sec on Unit 1 and 950 uC1/sec on Unit 2.
We have, i
therefore, concluded that.a_ Limiting. Condition for Operation
-was not exceeded.
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--Very truly yours,
- COMM0llWEALTH EDISON COMPANY.
Quad-Cities Nuclear Power Station o
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Superintendent 1
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.2 50- asy So-ass USAEC 110S GTWtl TLXA016 WAD 451(2136)(1-04917AC357003)PD 12/22/72 2129 ICS IP!1VEIB MVN ZCZC 00267 TDVE CORDOVA ILL 158 12-22 141P CST
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PMS ANGELO.GIAt1BUSSO DEPUTY DIRECTOR c3 g td'c$.[.J./'Lpli I
DIRECTORATE OF LICENSIt1G q*.
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WASlfDC REFERENCE QUAD CITY NUCLEAR POWER STATION D/P29 AND 30 APPENDIX A SECTION 1.0.A.2 3.8. A.1, 3.4.C DOCKETS 50-254 AND 50-26f" WITil BOTH UNITS OPERATING AND It1 PROPER VALVE, LI.NE-UP {tESULTED IN A LOSS OF FLOW.TO THE flAIN CHIMNEY SAMPLE SYSTEM FOR A PERIOD OF ABOUT 5
ONE }{0UR LOAD UAS' STEADY DURIllG IfE PERIOD AND I
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LL OFF-GAS MONITORS WERE OPERABLE AND SHOWED flo' CHA f}GE '
SA!1PLE FLOW.WAS: RESTORED AT 0830 DECEMPER 32 1972 Af!D IS IRREGULATOR IN THE SOLUTION LEVEL IN THE ' UNIT 2 STAND-BY LICUID 4
CONTRCL TANK HAS BEEN DISCUSSED WITH REGION 3 COMPLIAf1CE INSPECTORS AT TIIE STATION' THIS '
WEEK A FURTHER REVIEW OF THIS ItlCIDENT s
- Wl{ICl! OCCURRED DECDEMBER-17 1972 INDICATES THAT Tile i1It!IMUM TECll' SPEC' LIMIT OF 3470 i
GALL 0 tis WAS APPAREllTLY EXCEEDED BY ABOUT 25 GALLONS
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- THE LEVEL INDICATIf!G SYSTEII"IS CONIDERED TO BE DEFICIENT AND A REPORT WAS BEltlG PREPARED IN ACCORDAtlCE,
'ITH TECH SPEC ' 6.6.C. I. TIS IS NOW REPORTD AS AN. ABNORMAL 0CCURANC N KALIVIANAKIS 530A"EST USAEC,!!QS GTWN t'
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i LD036 TDVE CORDOVA ILLINOIS DECEMBER 22 1972 139P B GRIEH I
U S ATOMIC COMMISSION HEGION 3 COMPLIANCE 799 ROOSEVELT ROAD GLEN ELLYN ILLINOIS 60137
,1 REFERENCE QUAD CITY NUCLEAR POWER STATION D/P29 AND 30 APPENDIX A SECT ION 1.0. A.2, 3.8. A.1, 3.4.C.
DOCKETS 50-254 AND n
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50-26/ WlTH BOTH UNITS OPERATING AND IMPHOPER VALVE LINE-UP
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SYSTEM FOR A PERIOD OF ABOUT ONE HOUR LOAD WAS STEADY DURING THE PERIOD AND ALL OF GAS MONITORS WERE OPERABLE AND SHOWED NO CHANGE.
SAMPLE FLOW WAS RESTORED AT 0830 DECEMBER 11 1972 AND 15 IRREGULAT,0RY'IN THE SOLUIl0N LEVEL IN THE UNIT 2 q
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LDO36 TDVE COROOVA ILLINOIS-DECEMBER 11 1972 139P (P2)
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{TAND-BY LIQUID CONTROL TANK HAS BEEN Dl3 CUSSED WITH REGION 3 COMPLIANCE INSPECTORS AT THE STAT ION TH IS WEEK.
A FURTHER fEVIEW OF THIS INCIDENT WHICH OCCURRED DECEMBER 17 1972 INDICATEC '
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THAT THE MINIMUM TECH SPEC LIMIT OF 3470 GALLONS WAS APPARENTLY EXCEEDED BY ABOUT 25 GALLONS THE LEVEL INDICATING SYSTEM IS CONSIDERED TO BE DEFICIENT AND A REPORT WAS BEING PREPARED IN ACCORDANCE WilH TECH SPEC 6.6.C.1. THIS IS NOW REPORTED AS AN-ABNORMAL OCCURANCE.
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