ML20204B106

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Submits Daily Highlight.On 861202,substantial Amount of Water Leaked from Fuel Pools as Result of Loss of Air Supply to Inflatable Seal in Transfer Canal.Caused by Erroneous Closing of Isolation Valve
ML20204B106
Person / Time
Site: Hatch  Southern Nuclear icon.png
Issue date: 12/05/1986
From: Rivenbark G
Office of Nuclear Reactor Regulation
To: Harold Denton, Lyons J, Vollmer R
NRC
Shared Package
ML20204B112 List:
References
FOIA-87-76 TAC-64455, TAC-64456, NUDOCS 8703240679
Download: ML20204B106 (26)
v • d • e


Text

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Dzeceber 5, 1986 Dockets Nos. 50-366/321 i(

MEMORANDUM FOR: H. Denton* l R. W. Houston R. Vollmer D. Crutchfield J. Lyons* E. Rossi H. Thompson

  • G. Lainas F. Miraglia*: T. Speis R. Bernero* . W. Russell G. Holahan* ' V. Benaroya T. Novak W. Regan F. Schroeder- D. Vassallo THRU: Daniel R. Muller, Director (

BWR Project Directorate #2 Division of BWR Licensing FROM: George W. Rivenbark, Project Manager BWR Project Directorate #2 Division of BWR Licensing _

SUBJECT:

DAILY HIGHLIGHT Edwin I. Hatch Nuclea' Plant, Units 1 and 2 As a result of loss of air supply to an inflatable seal in the transfer canal between the fuel pools for Hatch Units 1 and 2, a substantial amount of water leaked from these fuel pools. Some of this was discharged through storm drains to a swampy area within the owner-controlled property. The amount that leaked from the pool may have been as much as 140,000 gallons with 5,000 to 10,000 gallons having reached the swampy area. . The licensee has constructed a number of earth fill dams to contain the sp111' water in the swampy area. The activity of the release at the stonn drain discharge was initially reported on 12/4/86 as 1.26 times the maximum permissible concentrations'(mpc) for cesium-134.,

cesium 1-37, zinc-65, and manganese-54 and well below mpc today (12/5/86)...

The event was caused by the erroneous closing of'the isolation valve in the air supply line at 2200. CST on 12/2/86. The licensee did not discover that the air supply valve was closed until about 4200: CST on 12/3/86. ;The licensee notified the NRC at about 0130 on 12/4/86. Region II dispatched an Augment Inspection-Team on the morning of 12/4/86. ilnit l'was' operating at full power and Unit 2 was making final arrangements for restart following a refueling outage. Unit I remains at full power and Unit 2 is still preparing for restart.

s m%W9adW f Stnid R. ihNg b I MURPHYB7-76 PDR George W. Rivenbark, Project Manager BWR Project Directorate #2 Division of BWR Licensing

  • THESE COPIES MUST-BE HANDCARRIED DBL:PDS, b t:cb DBL:P M ler DISTRIBUTION

? PDf2 Daily Highlight File GRheimar [g .f7_ g i 12/7/86 DMp/(/86 12

/3/7 )

_ . _ _ __ _ ___ _ _ __ __h.______-_____.___ _ _ _ _ _ _ _ _ _

O OPERATING REACTOR EVENTS BRIEFING 86 16 DECEMBER 8, 1986 SIGNIFICANT EVENTS MULTIPLANT ENVIRONMENTAL QUALIFICATION OF AMP SPLICES HATCH 1 AND 2 AIT FOR LEAK FROM SPENT FUEL P00L HADDAM NECK ELEVATED REACTOR COOLANT SYSTEM (RCS) LEAKAGE CALVERT CLIFFS 1 GAS LEAKAGE TO JACKET WATER COOLING SYSTEM FOR EDG OTHER EVENT OF INTEREST MILLSTONE 2 RESULTS OF EDDY CURRENT TESTING (ECT) 0F STEAM GENERATOR TUBES IN NOVEMBER 1986 - UPDATE pq,rg - 9 7- 76 f3/8

r DEC OS '86 04: 35 007 GPC HUC OPS + P.01

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EVENT DESCRIPTION :

A SAMPLE ON THE BORON INJECTION SYSTEM TANK SHOWED THAT ITS BORON CONCENTRATION 17.3%. ACTUAL FOUND WAS LESS THAN THE TECH SPEC LIMIT. TECH SPEC REQUIRED VALUE IS VALUE WAS 17%. TECH SPECS REQUIRE CONCENTRATION TO BE CORRECTED OR BE IN HOT S/D WITHIN 12 HRS. PLANT PREPARING TO'MAKE A BORON ADDITION AT TIME OF NOTIFICATION. PLANT AT 60% POWER AND HOLDING.

(NOTIFIED R3 RING)

Reportable Event number 07203 .

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Facility HATCH Date Notified : 12/16/86 Unit 1.2 Time Notified 08:42 '

Resion : 2 Date of Event : 12/16/86 Ver.or GE.GE Time of Event 03:00 Operations Officer : Ray Smith'

  • Classification 10 CFR 50.72 NRC Notified BY : B. COLEMAN Catesory 1 1 h0UR REPORT Rad Release : No 'Catesory 2 :

Cause UNANALYZED CONDITION Catesory 3:

Component :

Catesory 4: .,

b EVENT DESCRIPTION :

A REVIEW OF THE EVENT INVOLVING A LOSS OF FUEL POOL WATER WHICH OCCURRED ON 12/04/36 (EVENT #07091) HAS REVEALED AN UNANALYZED CONDITION. THE PROBLEM

_, ARISES 9ECAUSE SOME cQNTROL ROD BLADES (15) ARE ON SHORT HANGERS. IF 1HL LEVEL DRAINS DOWN TOWARDS THE LEVEL ASSUMED IN THE ANALYSIS THESE CONTROL ROD ELADES ON SHORT HANGERS COULD POSSIBLE BE ENTIRELY UNCOVERED. HIGH DOSE RAT OF 8,000 TO 10.000 R/HR FROM THE HIGH LEVEL OF COBALT IN THE GUIDE ROLLERS AT THE TOP OF RODS COULD PREVENT THE ACCOMPLISHMENT OF THE REQUIRED CORRECTIVE ACTIONS FOR THE POOL LEAK (ie INSTALLING AND INFLATINO GATES).

THESE DATES ARE CURRENTLY INSTALLED AND INFLATED. UNIT 1 IS OPERATING AT 100X AND UNIT 2'IS AT 35% POWER.. (NOTIFIED R2 CROTEUAt IE ROSENTHAL) o *

  • UPDATE t 1509 * *
  • LICENSEE PERFORMED DOSE CALCULATIONS & CONCLUDED THAT THE DOSE AT THE SITE BOUNDARY WOULO INCREASP 0.5 MR/MR- LICENSEE DOES

, NOT HAVE ENOUGH INFORMATION TO DETERMINE WHETHER. CONDITION IS ANALYZED OR

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DN NALYZED. THEREFCRE, LICEN EE RETRACTS'REPORTAOLE' EVENT #07208. U piza 74 g . _ . .. . . ~ 'Wf

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< AN UARY 22, ' 987 AGE \JA

1. OPENING REMARKS J. P. O'REILLY ll. EVENT

SUMMARY

J. T. BECKHAM, JR.

Ill. GPC RESPONSE TO EVENT J. T. BECKHAM, JR.

IV. RAD / ENVIRONMENTAL SIGNIFICANCE S. C. EWALD V. SAFETY / REGULATORY DESIGN BASIS L.T. GUCWA VI. SYSTEM DESIGN P. R. BEMIS Vll. INCIDENT REVIEW D. S. READ Vill. CONCLUSION J. P. O'REILLY

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EVEN JESCR.3~ 0\

e STATUS OF UNITS e AIR PRESSURE REGULATOR FAILS

  • valve to transfer canal seals partially closed e AIR SUPPLY VALVE CLOSED e PERIODIC REPLENISHMENT OF FUEL POOL WATER e CAUSE OF LEVEL DECREASE INVESTIGATED AND IDENTIFIED e AIR SUPPLY VALVE OPENED- REESTABLISHING AIR TO SEALS

, e INCIDENT MITIGATION ACTIVITIES UNDERTAKEN

  • management notified and involved
  • NRC/ government agencies notified

< > spill contained

  • cleanup activities undertaken EVENT RESPONSE EXCELLENT ftc2-1

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l EVE \~~ \ 0~~ CA~~ 0 \ S e PROMPT NOTIFICATIONS TO NRC e STATE AND LOCAL AGENCIES NOTIFIED AND PERIODICALLY UPDATED 4

e CLOSE COOPERATION BETWEEN GPC AND AGENCIES

  • FIELD EVALUATIONS COORDINATED 4

TIMELY NOTIFICATION AND UPDATES PROVIDED Ac2-2

EVE \~~ V A\ AGEV E\~~

1 e EXECUTIVE MANAGEMENT INVOLVEMENT EARLY IN EVENT

  • President
  • Executive Vice President
  • Senior Vice President
  • Vice President Plant Hatch e CORPORATE COMMITMENT TO MITIGATE WITH FULL AUTHORITY GIVEN TO SITE VICE PRESIDENT e PLANT / CORPORATE EMERGENCY CENTERS ACTIVATED j EARLY AND MANNED AROUND THE CLOCK l

e CONSULTANTS BROUGHT IN EARLY IN EVENT 4

CORPORATE INVOLVEMENT

'AT HIGHEST LEVELS ftc2-3

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SAP _ \G e INVESTIGATIVE

  • Flowpath
  • Concentrations
  • FOOTPRINT
  • Perimeter
  • Cleanup Scope 1
  • CLEANUP 1 - Migration

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  • Results
  • ROUTINE / AUGMENTED
  • Composite Water l
  • Sediment l

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I FUEL TRANSFER CANAL FLOWPATH i FUEL POOL j 426 mci i

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OTHER NITROGEN I RADWASTE 61 m C.i STG. TANK +-

45 mC. i 205 mci l

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! RECYCLE YARD DRAIN I

WATER 4 84 mci 4 mci I I

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i OUTFALL 1/ y,_ g 26 mci i

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      • NO RELEASE ***

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  • No Offsite Impact l
  • No Swamp Impact l
  • Routine / Augmented Sampling l

SATE ~Y/ REG_A~0RY JES G\ 3AS S e DES'IGNED IN CONFORMANCE WITH REGULATORY REQUIREMENTS e DESIGNED APPROPRIATELY FOR ITS FUNCTION AND SAFETY SIGNIFICANCE e MEETS NRC SAFETY GUIDE 13 WHICH IMPLEMENTS GDC 61 e MEETS FSAR COMMITMENTS DESIGN MEETS NRC AND FSAR REQUIREMENTS LfCl

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SATE ~Y/EGJORY BAS S 4

e REVIEWED THE SAFETY CLASSIFICATION

  • Regulatory Guide 1.26 o REVIEWED THE ACTUAL DESIGN AND INDUSTRY PRACTICES e SEALS ARE NOT SAFETY-RELATED '

e THOSE PORTIONS OF SAFETY-RELATED i STRUCTURES, SYSTEMS, AND COMPONENTS

FUNCTIONED PROPERLY AND AS DESIGNED
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\C JE\~ REV EW 30ARJ e ESTABLISHED BY GPC e SENIOR MANAGERS e REV p

  • ISEG investigation
  • environmental protection
  • engineering efforts
  • recovery plans

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e COMPREHENSIVE FORMAL REPORT V

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CORREC VE AC~~ 0\S 20 R JE\~ 2 EJ 3R03_EVS '

e AIR SUPPLY OPERATION (regulator & ball valve)

  • revised DR procedure

= in PE0 inspection procedures

= operator discipline

  • valves tagged e LEAK DETECTOR OPERATION
  • revised procedures
  • engineering review during replacement dwt

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CO R R EC-~ VE AC-~ 0 \ S 20 R 3

JE\~~ r EJ ROB _EVS e TRANSFER CANAL SEAL OPERATION

  • redundant air to seal system
  • normal seal replacement
  • further engineering evaluation e ADMINISTRATIVE CONTROLS
  • DR procedure
  • shift turn-over

- discipline a fuel pool level

! APPROPRIATE MANAGEMENT CONTROLS IN PLACE l

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DOCKET No 50-321/366 TASK No.307-6B DATE : 1/29/07 TACH : 64455/6 PA # : 1162 TASK INTERFACE AGREEMENT TITLE : Hatch-Transfer Canal Seals Lcad Office: NRR/R2 RcferencessDoc.30,86 Memo Gibson to Holahan Action Plan Review all Input and Prepare Eval, for R2 (PGD-DWR) e Discuss with R2 (2/3/07) /)cq E / F7 Complation Date : 4/15/07 Project Manager : G.Rivenbark (27764) r NRR Coordinatori eject Direc  :

I ht lor (24416)

D. Muller

&fE Approved _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ , , _ , , _ _ _

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Reportable Events For 12.04.86 Reportable Event number 07091 .

Facility 8 HATCH Date Notified i 12/04/G6 Unit i 1.2 ., Time Notified 01:35 .

Region 2 Date of Event i 12/03/06 Vendor CE.0E Time of Event i 22:02 ,

Operations Officer Joseph 011tter Classification 10 CFR 50.72

  • NRC Nott'fied Dv I JEFF SCHMIT2, Category 18 b.2.Vi ..

Rad Release Yes Catesory 2 .

Cause UNDER INVEGTICATION Catepory 3 8 '

Component i Catewory 4

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EVENT DEGCRIPTION gg, '

UNIT-1 WA3 AT 100*/. POWER. UNIT-2 IN COND. 4'FOLLOWINO A REFUELING OUTAGE. A LO33 0F AIR .TO THC INF,LATADLE CEALG FOR CATEG OF THE TRANSFER CANAL DETWEEN THE UNIT'1 AND UNIT 2 FUEL POOL CAUSED FUEL POOL WATER TO LEAK OUT OF THE TRANOFER CANAL AND INTO AN AREA DETWEEN THE UNIT 1 AND UNIT 2 REACTOR DUILDINOGi'GOME OF THIS WATER LEAKED THROUGH PENETRATIONS IN THE REACTOR DUILDINO3 AND TURDINE DUILDINO TO THE YARD. THE OPERATORG WERE FIRST ALARMED TO THE CITUATION AT 2137 WHEN A FUEL POOL C00 !N0 PUMP TRIPPED OFF ON LOW SUCTION PRESSURE. THE OPERATOR 3 STARTED NAKEUP AND INVEST!0ATED. AT 2202 THC LEAK WAS DIGCOVERED. THE*KN!FE VALVE"THAT/NORMALLY' PASSES'A!R TO THE' CEALS'.WA3fFOUNDiCLOGED.W!N ADDITIONe' FHf"1 LEAR *MTt"cTf 0N 'nNNilNcf ATOR'FAf t N ~

,TO'_AL*ARMf : THC;,CAUGC.'0FlBOTH.'OFOTHEGEf FAltuREG5!S*BEIN0?!NVEST!0ATED.

'LLVEL IN THE FUEL POOLS DROPPED ADOUT 3 FEET--STILL ADOVE THE TECH GPEC LIMIT. THERE WAG NO INCACASE IN THC TEMPERATURE OF EITHER FUEL POOL. THE LICENOCE 13 GTILL IN THE PROCESS OF CALCULATINO THE AMOUNT OF FUEL POOL WATER LO37. CHEMIGT3 HAVE TAVEN A FUEL POOL WATER CAMPLE AND ARE CURRENTLY ANALYZINO. WILL REPORT FINDINO3 TO THE OP CENTER. NOTIFIED RDO (DLAKE). EO (ROOENTHAL), FEMA (AU3 TIN). fA (CALLEY , iHS/f,DA (WARREN). DOC (NOROAN).

f 0 *** CIRBEE4fA YPIATEDDAT8 5 MDD630 alt.t = - -- 2 A N * OUNTE TGtAfCWAMPFAREA! ADJACENT 1TC)THElPLANT. GEC EVENT # 7093 FOR FURTHER DETAIL.

~ ~ ~

FUN 6 EN. ITHEY ACTUAE!0E Y L'O R2 D RE'SE R A 1-HIEON RE$$M WERE JUMPERED OUT. THE LICENSEE IS INVESTIGATING THE NATURE OF THE PROCEDURAL INADEOUACY. LICENSEE PLANS TO NOTIFY RESIDENT. NOTIFIED RDO (DLAKE). '

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Ceportable Event number 07093 .

Facility 8 HATCH Date Notified i 12/04/86 -

Unit : 12 Time Notified 04:40 Reston 2 Date of Event i 12/03/96 i Vendor GE.OE Time of Event 22:02 Operations Officer Joseph Ofitter Classification i 10 CFR 50.72 NRC Notified By : BENKE Catesory 1 b.2.iv.B Red Release Yes Catesory 2 : ,

Cause i UNDER INVEST! OAT!0N Catesory 3 : ,

Component : - Catescry 4 8 EVENT DESCRIPTION LICENSEE HA3 ANALYZED COOLANT SAMPLE AND HA3 EST! MATED THAT 2.49 X MFC OF THE FOLLOWING ISOTOPES WAt RELEASED: CS-134, C5-137. CO-60. ZN-65. THE LICENSEE .

HAS NOTIFIED STATE AND LOCAL AUTHORITIES. LICENSEE IS DAMMING A DRAIN TO THE '

RIVER. THU3 FAR. THERE !$ NO INDICATION THAT ANY CONTAMINATED WATER HAS ENTERED THE RIVER. NOTIFIED RDO (BLAKE). HP (CONGEL).- '

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l Reportable Eveat number 07094 . I i Facility I SRUNSWICM Date Notified : 12/04/G6 Unit 1 Time Notified 07:10 j l Reston i 2 Date of Event 12/04/06 l Vendor OC.0E Time of Cvent 04:01 Operations Officer : Joserb 011tter Classification 10 CFR 50.72 4

NRC Notified De i LORENZO JOHNSON CatesorY 1 i EGF Actuation 000 0090000 0 Ze GO90DG ev _8 _8

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Cause : L.JDER INVCGT!0ATION Category 3:

C meonent t Catesory 4 EVENT DCSCRIPTION 8 LICEN0EC HA3 ANALYZED COOLANT SAMPLE AND HA3 ESTIMATED THAT 2.49 X MPC OF THE FOLLOW!?JO ISOTOPEC WA3 RELEA0ED C3-134. CS-137. CO-60. ZN-65. THE LICENGEE HA3 NOTIFIED STATC AND LOCAL AUTHORITICS. LICEN5EE IS DAMMING A DRAIN TO THE [

RIVER. THU3 FAR. THCRE 13 NO INDICATION THAT ANY CONTAMINATCD WATER HA3 CNTERED THE RIVER. NOTIFIED RDO (DL/d:C) . HP (CONGEL).

R portable Event' number 07074 .

Facility I f

DRUNOWICK Date Notified a 12/04/06 Unit i 1 . Time Notified 07:to R: vion 2 Date of Event 12/04/;- -

j V:ndor OC.0C Time of Event t 04 01 Ocarations OF(icer Joseph 011tter Classification i 10 CFit 50.72 NGC Notified Dy I LORENZO JOHNGON Catevory 1: CCF Actuation R d Release No Category 28 C use i UNDER INVC3T!GATION Category 3 8 Co Ponent : Catenorv 4 8 CVCNT DCCCHIPTION :

UNIT WA0 AT 90'./POWLR AT THC TINC OF THC CVCNT. OUTFUT DRCANCR ON THC "D" RPG MG-SCT TR!fPCD.

CAUSC UNDER INVC3710AT!0N. ACLULTCD IN THC FOLLOWING I 10CLAT10N3. GROUP 2. GROUP 3. GROUP 6. AND OROUP 0. THCGC 100LAT10N3 INCLUDC RWCU AND HD VENTILATION. ALL OYGTEM3 PERFORMCD AS RCOUIRCD AND HAVC DCCN RCCCT. RPG DU3 10 DCINO QUPPLIED WITH ALTCRNATC POWER. NOTIFICD RDO l

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