ML20085J887
| ML20085J887 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 05/24/1974 |
| From: | Stephenson B COMMONWEALTH EDISON CO. |
| To: | James Keppler NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| Shared Package | |
| ML20085J883 | List: |
| References | |
| NUDOCS 8310190158 | |
| Download: ML20085J887 (2) | |
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GLEN ELLYN IL 60137 SbbJECT DPR-25 DRESDEN NUCLEAR POWER STATION UdIT THREE.
4 OO THIS WILL CONFIRM A CONVERSATION WIIH F MAURA 0F YOUR OFFICE
-<L AT 1545 HOURST THIS DATE CONCERNING THE DISCOVERY DURING
$2tn ROUTINE QUARTERLY CALIBRATION CKECKS OF A SET POINT DRIFT OF L.I.T.n. 3-263-72A BEYOND THE PERMISSABLE VALVE GIVEN I
IN TABLE 3,2.2 0F THE TECHNICAL SPECIFICATION.
THIS SWITCH WHICH 9F.1201 (RS-49 d
IS THE S0 CALLED 2/3 CORE COVERAGE INTERLOCKS FOR CONTAINMENT COOLING
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Was FOUjO TO OPERATE AT 259 INCHES OF. WATER DECREASING WHICH IS AB0VE i
THE PREMISSABLE SET POINT OF 257 INCHES OF WATER DECREASING.
THE SWITCH WAS RESET TO OPERAIE AT 254.5 INCHES OF WATER.
ADDITIONAL DETAILS WILL BE FORTHCOMING IN THE FORM OF A TEN DAY LETTER IN ACCOR-DANCE' WITH SECTIONS 6.6.13.1.A 0F THE TECHNICAL SPECIFICATIONS.
BB STEPHENSON SUPERINTENDENT DRESDEN NUCLEAR POWER STATION COMMONWELATH EDISON C0 RR 1 MORRIS IL 60450 NNNN MAY 30 :9x r
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RO Inspection Report No.
Transmittal Date Distribution:
Distribution:
R0 Chief, FS&EB R0 Chief, FS&EB RO:HQ (5)
RO:HQ (4)
DR Central Files L:D/D for Fuels & Materials Regulatory Standards (3)
DR Central Files Licensing (13)
RO Files R0 Files B.
RO Inquiry Report No.
Transmittal Date Distribution:
Distribution:
R0 Chief, FS&EB R0 Chief, FS&EB RO:HQ (5)
RO:HQ DR Central Files DR Central Files Regulatory Standards (3)
R0 Files Licensing (13)
RO Files C.
Incident Notification From: Cornonwealth Edison Co.
Docket No. 50-249 (Licensee & Docket No. (or License No.)
Transmittal Date
- July 5, 1974 Distribution:
Distribution:
R0 Chief. FS&EB R0 Chief, FS&EB RO:HQ (4)
RO:HQ (4)
Licensing (4)
L:D/D for Fuels & Materials DR Central Files DR Central Files RO Files R0 Files e&
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