ML20084K840
| ML20084K840 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 06/10/1974 |
| From: | Kalivianakis N COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20084K663 | List: |
| References | |
| NUDOCS 8305190556 | |
| Download: ML20084K840 (1) | |
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DIRECTnPATE OF RE,UL ATORY OPERATIONS REaION III uS AT0nIC roEnny COM:1ISSION 700 ROSSEVELT RD O
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90-969 LICE 1S7 DPR-30, APPI4 DIX A, SECTION 1.0.9.3 AT 225AM ON JUNE 10, 1974 'AITH U1IT 9 OPERATING AT 200M'JE, FEED'.JATER O
O to. FL,w nemn. ATI1, v0 LUES A0-2-643 SUFFERED A GROSS FAILURE nF TME 511LVES '0DY, CAUSING THE FEED'!ATER LINE TO 3ECOME SEVERED.
'O THE SEVERED LINE CAUSE9 THE WATER LEVEL IN THE REACTOR TO DECREASE:
T3E n:AcTOP SCynMED FR,M A LO.e wATE3 tEvEt S1,NAL, ExAnINATIon e
l 17 T1E VDLVES SMnWED TMAT THE FAILURE APPEARED TO 3E CAUSED 7Y TME V1LVES "I1IUM MALL THICXNESS 7EING LESS THAN THE DESIGN On DuIREME1TS. MINIUM MALL TMICKNESS SHOULD MAVE 9EEN.562 INCHES; O
ACTUAL MEASURE!1F1TS RA11ED FR7M.315 INCHES To.447 INCHES.
FEED'JATER FLn9 TMPOU19 THE qEtfERED LINE
'~'AS ISOLATED WITHIN O
90 nINUT=S. ESTIMATEn AnE THAT APPP0xIn ATEL 50,000 GALLONS OF O
"ATED TSCAPED FROM THE SEVERED LINE. MEAT FROM THE RELEASED JAM AN7 S 1 ACTUAD THE FIRE DELU1E SYSTEM 'dHICH PELEASED O ' ADDITIONAL WATER TO O
THE DLANT. RADIATION CONTAMINATION SURVEYS SHOWE9 TMAT A 9'1ALL QUANTITY OF C11TAMINATED WATER PEACMED THE oLANT STOPM SE'JER SY9 TEM A1D EMPTIED INTO TME UNIT P OIL SEPAPATOR O
O SunP. ExAMI1ATIno oF ' EATER 11 THE SEPARATOR SM0wsD aROSS,rTA
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ACTIVITY OF T.4 TIME 9 10 TO THE MINUS 6 MICDO-CURIES PER ML.
I A10 1R1SS GAMMA ACTIVITY OF 1.0 TIMES 10 TO THE MINUS 5 MICRO-CURIES O pTp yt, i.,MICH Is sLI,MTLy A,,VE 9ACXGROUND. SAMPLES FROM THE O
INTAKE PAY C0"D9 SITE 9 AMPLER, UMICH IS 90Y1 STEAM FROM THE SEPARATOR DISCMARGE TO THE PIVER, SM7k'ED ACTIVITY OF 1.07 TIMES 10 TO O
O THE MI14S o MICRO-CURIES PED ML. MI CM I S NOT A90VE 40RM AL LEVELS.
TME MAJ1 PITY nF THE WATEP FRnN THE LI1E 7RIAX AND THE DELUGE SYSTEM ACC'IMUL ATED 'JITHIM THE PL ANT. CLEAN UP AND DECONT AMIN ATIO4 O ng Ty. eLAoT AREA, A o PR,CESSIN, or THE ACCunuLATED s'ATER IS O l I1 DR71'rS9 N.J. KALIt11A1AKIR ST ATID1 SUPE 911TEfDE NT O
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