ML20084P986

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Ro:On 740315,drywell Oxygen Concentration Exceeded Tech Spec.Nitrogen Regulator Bypass Valve Opened to Let in More Nitrogen to Primary Containment.Nitrogen Tank Inventory Full & Oxygen Concentration Brought to 5%
ML20084P986
Person / Time
Site: Quad Cities 
Issue date: 03/15/1974
From: Kalivianakis N
COMMONWEALTH EDISON CO.
To: James Keppler
NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
Shared Package
ML20084P957 List:
References
NUDOCS 8306130088
Download: ML20084P986 (4)


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-O 50265 APPENDIX A SECTIONS 1.0.A.2 AND 3.7. A.S. A AND 6.6.9 AT O-ABOUT 1200 ON IMRCH 15 1974 THE UNIT 2 DRYWELL OXYGEN CONCENTRATION WAS DETERMINED 10 BE 5.5 PERCENT WHICH IS SLIGHTLY IN EXCESS O 0F THE 5 PERCENT ALLOWED BY TECHNICAL SPECIFICATION 3.7. A.5. A O THE NITR0 GEN REGULATOR BYPASS VALVE WAS OPENED 70 LET IN MORE NITROGEN TO PRIMARY CONTAINMENT NITROGEN TANX INVENTORY IS FULL O AND THE OXYGEN CONCENTRATION WAS BROUGHT TO 5 PERCENT AT 4:30PM O N J XALIVIANAKIS O 1833 EDT O mMmacm0 ,

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  1. 1 sris 4i 799 ROOSEVELT ROAD TELEPHONE GLEN ELLYN, ILLINOIS 60137 (312)s58 2660 A. 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 l

B. RO Inquiry Report No.

Transmittal Date  :

Distribution: Distribution:

R0 Chief, FS&EB RO 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: Commonwealth Edison Co. Docket No. 50-265 (Licensee & Docket No. (or License No.)

Transmittal Date  : March 27, 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 RO Files

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Transnittal Date  :

Distribution: Distribution:

R0 Chief, FSSEB RO Chief, FS&EB RO:HQ (5) RO:HQ (4)

DR Central Files L:D/D for Fuels & IUterials Regulatory Standards (3) DR Central Files Licensing (13) R0 F11.cs R0 Files B. RO I luiry Report No.

Tr e " r.: ttal I' te  :

Jiouribstion: Dis tribut. ion :

R0 Chici, FSSEB R0 Ch4ef, FS&EB RO:HQ (5) RO:HQ DR Central Files DR Central Files Regulatory. Standards (3) R0 Files Licena ing (13) ',

RO Files C. Incid: at Notification From: Cotronwealth Edison Co. Docket No. 50-265 (Licensea & Decket No. (or License No.)

Trancnittal Date  : March 27, 1974 Dictribution: Distribution: ,

R0 Chief, FS&EB RO Chief, FS&EB RO:HQ (4) R0:HQ (4)

Licen sit. , (4) L:D/D for Fuels & Ifaterials DR Centeil Files DR Central Files Ido Files RO Files

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