ML20214H942
| ML20214H942 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 04/28/1987 |
| From: | Piercebjorklun AFFILIATION NOT ASSIGNED |
| To: | Zech L NRC COMMISSION (OCM) |
| Shared Package | |
| ML20214H933 | List: |
| References | |
| NUDOCS 8705270552 | |
| Download: ML20214H942 (1) | |
Text
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4=0t85668:18 04/28/87 ICS IPMMTZZ CSP WHSB
'""T ESSEx MA it 04-28 01279 eST O
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LANDO ZECH CHAIRMAN US NUCLEAR REGULATORY COMMIS$!ON O
WASHINGTON DC 20555 9
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- SIR, O
WE oEMANo PROOF PRIOR TO !$$UANCE OF LOW POWER LICENSE TO SEABROOK OR e
P!LGRIM NUCLEAR STATIONS THAT THE FOLLOWING CIRCUMSTANCES CANNOT OCCUR',
O 1 VALVE FAILURE PERMITTING LOSS OF COOLANT FROM THE REACTOR CORE e
THROUGH THE FAILED VALVE SO THAT EMERGENCY COOLANT ENTERING THE COOLER WOULO NOT ALSO EXIT THROUGH THE SAHE FAILED VALVE THEREBY O
LE4v!NG THE CORE WITHOUT COOLANT.
e 2
INcRFASE IN REACTOR CORE TEMPERATURE CAUSING THE ZIRCONIUM CASINGS ON URAN!UM RODS TO SWELL THEREBY BLOCKING PASSAGES BETWEEN RODS AND O
PREVENTING EHERGENCY COOLANT FROM CIRCULATING THERESY RESULTING IN e
UNCONTR0LABLE CHA!N REACTION AND MELTDOWN O
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8705270552 870520 Q
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