ML19220C950
| ML19220C950 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 03/29/1979 |
| From: | Lafleur J NRC OFFICE OF INTERNATIONAL PROGRAMS (OIP) |
| To: | Cunningham J, Simpkins R, Sung Y IRELAND, TAIWAN, GOVT. OF (REPUBLIC OF CHINA), U.S. EMBASSIES |
| References | |
| NUDOCS 7905160093 | |
| Download: ML19220C950 (3) | |
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NRCfast 114 (Mt) NRCM 0340 N W3 s. e o v t R N a' t *T ***
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PAGE 2 of 3 UNCLASSIFIED PUMPS WERE SHUT DOWN WHEN LOW NET POSITIVE SUCTION HEAD LIMITS WERE APPROACHED.
ABCUT 7:00 A.M., HI3H ACTI'/ITY MAS NOTED IN THE REACTOR CCCLANT SYSTEM SA".PLE LINES (APPROXIMATELY 600 MR/HR CONTACT F.EADINGS). A SITE EMERGENCY WAS THEN DECL' RED.
AT APPP0XIGTELY 7:30 A.M., A GENERAL E."ERGENCY WAS DECLARED SASED ON HIGH PADIATIOf. LEVELS IN THE REACTOR BUILDING.
AT 8:30 A.M. SITE BOUNDARY PADIATION LEVELS WERE T:EPORTED TO NOT BE SIGNIFICANT (LESS THAN 1 MR/YR).THE SOURCE OF ACTIVITY WAS STATED TO BE FAILED FUEL AS A RESULT OF THE TRANSIENT, AND DUE TO A KNOWN PREVIOUS PRIMARY-TO-SECONDARY LEAK IN STEAM GENEPATOR B.
THE RE3ICN I INCIDENT RESPONSE CENTER WAS ACT!VATED AT 8:10 A.M. AND DIRECT COS"SJNICATIONS WITH THE LICENSEE AND NRC HEADQUARTERS WERE ESTABLISHED. THE RESPONSE TEAM UAS DISPATCHED AT 8:25 A.M. AND AP. RIVED AT 'HE SITE AT 10:05 A.M.
'T 10:45 A.M. THE REACTOR CCOLANT SYSTEM PRESSURE WAS BEING HELD AT 19E0 PSIG WITH TEMPEPX DlE AT 220;F IN THE COLD LEG.
SY 10:45 A.M., PADIATION LEVELS OF 3 MR/HR HAD SEEh DETECTED 500 YARDS OFFSITE.
.C OF 3:30 P.M., THE PLANT WAS BEING SLOWLY N"
DOWN WITH REACTOR COOLANT SYSTEM (RCS) PRESSURE AT 450 PSI, USING NORM L L A h AND f%KEUP FLOW PATHS.
A STEAM BUBBLE HAD BEE 5 7LLAPSED IN ONE OF THE REACTOR COOLANT LOOP HOT LEGS, AND SOME NAT'JPAL CIRCULATION C0 CLING HAD BEEN ESTABLISHED.
PRESSURIZER LEVEL HAD BEEN CECPEASED TO THE HIGH RANGE OF VISIBLE INDICATION, AND SOME PRESSURIZER HEATEP.S
ERI IN CPERAF THE SECONDARY PLAhT WAS BEING ALIGNED TO DRAW A VACUUM IN THE PAIN CONDEN:.
AND TO USE CNE OF THE STEAM GENEPATORS FOR HEAT REMLVAL.
AJ :F ::30 P.M., A PLUME APPRCXIMATELY 1/2 MILE WIDE AND READING GENEPALLY l MR/HR n u ~J M p. i 'k, s.
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