ML21138A854

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Special Report 2021-002 Waste Gas System Inoperability
ML21138A854
Person / Time
Site: Summer South Carolina Electric & Gas Company icon.png
Issue date: 05/18/2021
From: Lippard G
Dominion Energy South Carolina
To:
Document Control Desk, Office of Nuclear Reactor Regulation
References
21-173
Download: ML21138A854 (1)


Text

V.C.SummerNuclear Station QQMinjQQ Bradham Blvd& Hwy215,Jenkinsville, SC 29065 W

Mailing Address:

Edd ney=

P.O.

Box 88,Jenkinsville, SC 29065 DominionEnergy.com May18,2021 Attn:

Document Control Desk Serial No.21-173 U.S.Nuclear Regulatory Commission VCS-LIC

/JBRev0 Washington, DC20555-0001 Docket No.50-395 License No.NPF-12 SPECIALREPORT2021-002 WASTEGASSYSTEMINOPERABILITY Dominion Energy South

Carolina, Inc.

(DESC) issubmitting this Special Report pursuant tothe requirements ofits Offsite DoseCalculation Manual (ODCM) andTechnical Specifications (TS).

ODCM1.2.5.1 Action aandTS3.3.3.9 Action brequire submittal oftheSpecial

Report, pursuant toTS6.9.2, forinoperability oftheGaseous Radwaste TreatmentSystem andits Explosive GasMonitoring Instrumentation.

TheWasteGasSystem'B'Train wasdeclared inoperable on March 31,2021duetoahigh moisture separator waterlevel, ascaptured byCondition Report CR-21-00830.

Thehigh moisture separator waterlevel issuspected tobearesult ofmakeup water leakingbytheWaste GasCompressor

'B'MakeupWaterLevel Control Valve (LCV01032B).

VCSNS will replace the LCV01032B diaphragm under WorkOrder(WO) 2104171While restoration ofthesystemis targeted forcompletion assoonasispracticable, VCSNSwill restore the system nolater than July 31,2021 TheWasteGasSystem'A'Train waspreviously tagged outforpreventative maintenance, whichisongoing.

Should youhaveanyquestions, please call Michael S.Mooreat (803) 345-4752.

Sincerely, GeorgeLippard Site VicePresident V.C.SummerNuclear Station Commitments contained inthis letter:

None cc:

G.J.Lindamood

- Santee Cooper L.Dudes

- NRCRegion II V.Thomas

- NRCProject Manager NRCResident Inspector