ML20062B836

Forwards Special Team Insp Rept 50-317/90-24 on 900904-07 Re 900830 Reactor Vessel Water Level Anomaly

ML20062B836
Person / Time
Site:	Calvert Cliffs
Issue date:	10/09/1990
From:	Cowgill C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
To:	Creel G BALTIMORE GAS & ELECTRIC CO.
Shared Package
ML20062B842	List: IR 05000317/1990024 ML20062B836
References
NUDOCS 9010260160
Download: ML20062B836 (4)

See also: IR 05000317/1990024

Text

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Docket No.: 50-317

License No.: DPR-53

Baltimore Gas and Electric Company

ATTN: Mr. George C. Creel

Vice President

Nuclear Energy

Calvert Cliffs Nuclear Power Plant

MD Rts 2 and 4

Post Office Box 1535

Lusby, Maryland 20657

Gentlemen:  :

,

Subject: NRC Region I Special Team Inspection Report No. 50-317/90-24

(September 4 to 7, 1990)

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This report transmits the findings of the Special Team Inspection conducted at

the Calvert Cliff s Nuclear Power Plant, Unit 1. At the conclusion of the t

inspection, these findings were discussed with'Mr. Denton of your staff. This

inspection was conducted by a team led by Mr. R. Summers of this office and

included representatives of .the Office of Nuclear Reactor Regulation and the

Office for Analysis and Evaluation of Operational Data. The team performed an

in-depth review of the reactor vessel water level anomaly that occurred while

draining the reactor coolant system on August 30, 1990.

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The creas examined during this special inspection are- described in the NRC

Region I Inspectien Report which is enclosed with this. letter. Within these i

areas, the inspection consisted of selective examination of procedures, inter- ,

views with personnel, and observations by the inspectors of your own investi-

gation of the event. ,

Within the scope of the inspection, no violations were observed; however, cer-

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tain of your activities were specifically noted by the team as being concerns.

The concerns were: (1) venting an unknown gas directly to containment without ,

adequate radiological or chemical hazards support; (2) use of journeyman know-

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ledge to complete the venting of the gas without procedures; and-(3) lack of  ;

operator knowledge regarding a temporary modification on: the Reactor Vessel .

Level Monitoring System.

We are interested in the manner in which you plan to address these concerns as l

.well as any additional actions you have taken or plan to _take as a result of

your own investigation. Therefore, '.te would like you to respond to this letter

within 30 days addressing these matters. .

,

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Baltimore Gas and Electric Company 2

OCT 0 91990

Your cooperation with us is appreciated.

Sincerely.

ORIGIN,il slGNED BY:

CllRTis J. COWGILL

Curtis J. Cowgill, Acting Chief

Reactor Projects Branch No. 1

Division of Reactor Projects

Enclosure: NRC Region I Special Team Inspection Report No. 50-317/90-24

cc w/ enc 1:

R. McLean, Administrator, Nuclear Evaluations

J. Walter, Engineering Division, Public Service Commission of Maryland

G. Adams, licensing, CCNPP

K. Burger, Esquire, Maryland People's Counsel

P. Birnie, Maryland Safe Energy Coalition

Public Document Room (PDR)

local Public Document Room (LPDR)

Nuclear Safety Information Center (NSIC)

NRC Resident' Inspector

State of Maryland (2)

K. Abraham, PAO-RI (2)

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