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ATOMIC Ef4CRGY COMMISS.
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John G. Davis, Deputy Director for Field Operations
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Directorate of Regulatory Operations, RO:HQ JERSEY CENTRAL POLER AND LIGHT COMPA!Pl (JCP6L)
OYSTER CREEK, LEAK IN BOTTOM VESSEL HEAD AT INSTRUMENT PEtETRATI6N 8e#g It is our view that the recent weld failure did in fact constitute an E,
unreviewed safety question, requiring D.L. authorization because the j
weakened area (extent unknown) increased the probabi'lity of the tube i
ejection. We understand that the licensee is additionally proposing I
a support structure to preclude ejection.
Licensing'has concluded per Memo Grier to'O'Reilly, dated June 14, 1974, that no restrictions on resumption of operations should be imposed because of this matter.
However, inasmuch as JCP&L is apparently unable to characterize the defect in the weld, it is requested that D.L. be contacted to consider the following:
1.
Increased and more stringent surveillance for vessel penetrations.
2.
A monitoring and test program on the affected in-core penetration including, for example, vibrational measurements.
Aemorefrequentleakagesurveilkanceprogramfordrywell 3.
If you have any. questions, please contact me.
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M! ! # D4 John G. Devis. Deputy Direster for Field Operations Direeterste ef Regulatory Operatisme RDeuQ JEEERT IENTR&L MNER AND L10Itf CtBdFANY (JCEL)
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Or81ER CMEK, LEAK IN 90Ff0H TESML IEAD AT INSTERENT PRIETRATIGI It is ear view that the recent veld fattare did in fact eenstitute an maswiewed esfoty gneetten, requiring D.L. autherisation because the weakened area (estaat unheewn) taaressed the probability of the tube l
l ejection. We understand that the lisensee is aMitionally proposing l
l a support structure to prestude ejection.
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Licensing has concluded per Hamo Oriar to O'Reilly, dated June 14, 1974, i
i that no restrictions on resumption of operations should be imposed because of 1-i this matter. However, insemasch as JCP&L is apparently unable to characterise i
i the defect in the weld, it is requested that D.L. be contacted to consider l
the following:
f 1.
Increased and more stringent surveillance for vessel penetrations.
l 2.
A mionitoring and test program on the affected in-core penetration including, for esseple, vibrational msasurements.
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A more frequent leakage surveillance program for dry well unidentified leakage.
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If you have any questions, please contact me.
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j Jeans P. O'De111y Direeter j
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cc:
B. Grier i
Greenman-Caphton Heibman Br nner O'Reilly
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