ML18227A453
| ML18227A453 | |
| Person / Time | |
|---|---|
| Site: | Turkey Point  (DPR-031, DPR-041) |
| Issue date: | 07/24/1975 |
| From: | Schmidt A Florida Power & Light Co |
| To: | Rusche B Office of Nuclear Reactor Regulation |
| References | |
| Download: ML18227A453 (6) | |
Text
N DISTRIBUTION FOR PART SO DO (TEMPORARY fORM) i MATERIAL CONTROL NO:
'I FILE INCIDENT REPORT FILE FROMM.
Florida Power & Light Co Miami, Fla.
33101 A.D, Schmidth 7-24-75 8-1<<75
~ DATE OF DOC DATE REC'D LTR TWX RPT OTHER TOo Mr. B,CD Rusche CLASS UNCLASS PROPINFQ XXX ORIG 1 signed INPUT CC OTHER NO CYS REC'D 1
SENT LOCAL PDR DOCKET NO:
, 50-251 XX DESCRIPTION:
Ltr advising of Abnormal Occurrence AO-50-251/75-9 on 6-13-75'e breach of containment integrity-airlock equalizing valve open...;....
ENCLOSURES:
oo,Not'J3'jiijove.'LANT NAIVETE: Turkey Pt. Unit 4'OR ACTION/INFORMATION DHK 8-5 "75 BUTLER (L)
W/ Copies CLARK (L)
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W/ Copies ZlEMANN (L)
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W/ Copies YOUNGBLOOD (E)
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M. SERVICE (L)
S. SHEPPARD (L)
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G. WILLIAMS(E)
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NCAN ENVIRO MULLER'ICKER KNIGHTQN YOUNGBLOOD REGAN PROJECT LDR I-IARLESS EXTERNAL DISTRIBUTION A/T IND.
BRAITiViAN SALTZMAN MELTZ PLANS MCDONALD CHAPMAN DUBE (Ltr)
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P. O. BOX 013100, MIAMI, FLORIDA 33101
'sguIatory Docket File cP c
Mr. Benard C. Rusche, Director Office of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C.
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S FLORIDA POWER St LIGHT COMPANY July 24, 1975
DearMr,
. Rusche:
ABNORMAL OCCURRENCE NO. 251-75-9 TURKEY POINT UNIT NO.
4 DATE OF OCCURRENCE:
JUNE 13, 1975 SUPPLEMENTARY REPORT:
BREACH OF CONTAINMENT INTEGRITY AIRLOCK EQUALIZING VALVE OPEN A.
INTRODUCTION Our Abnormal Occurrence report 251-75-9 of June 20,
- 1975, reported a breach of containment integrity.
A flow path from containment to atmosphere had been inadvertently established through the equalizing valve for the personnel access airlock outer door.
The position of the valve operating handle indicated that the valve was shut,
- however, the mechanical linkage which connects the operating handle to the valve was not connected.
The linkage is hidden from view behind a metal plate.
B.
CORRECTIVE ACTION The proposed permanent corrective action was to add a check point to the "blind flange list" requiring verification that the mechanical linkages for the airlock inner and outer door equalizing valves are connected.
Subsequent analysis has revealed that a more comprehensive procedural change would provide better assurance of containment integrity.
Therefore, rather than add a single checkpoint to the "blind flange list", we will revise Turkey Point Units No.
3 and 4 Operating 8200 HELPING BUILD FLORIDA
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I Mr. Benard C. Rusche, Director Page Two July 24, 1975 Procedure 0202.1, entitled "Reactor Startup-Cold Condition to Hot Shutdown Condition", to include a complete list of items to be checked to verify containment integrity.
Very truly yours,
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- Schmidt, Vice President Power Resources MAS/cpc cc:
Mr. Norman C. Moseley Jack R.
Newman, Esquire
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