ML20151E594

Forwards Safety Insp Rept 50-483/88-09 on 880606-09.No Violations Noted

ML20151E594
Person / Time
Site:	Callaway
Issue date:	07/13/1988
From:	Shafer W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:	Schnell D UNION ELECTRIC CO.
Shared Package
ML20151E597	List: IR 05000483/1988009 ML20151E594
References
NUDOCS 8807260133
Download: ML20151E594 (3)

See also: IR 05000483/1988009

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JUL 131988

Docket No. 50-483

Union Electric Company

ATTN: Mr. Donald F. Schnell

Vice President - Nuclear

Post Office Box 149 - Mail Code 400

St. Louis, MO 63166

Gentlemen:

This refers to the special safety inspection conducted by Mr. J. P. Patterson

and other representatives of the NRC on June 6-9, 1988, of activities at the

Callaway Nuclear Power Plant authorized by NRC Operating Licanse No. NPF-30

and to the discussion of our findings with Mr. M. Stiller and others of your

staff at the conclusion of the inspection.

The enclosed copy of our inspection report identifies areas examined during

the inspection. Within these areas, the inspection evasisted of a selective

examination of procedures and representative records, observations of Emergency

Response Facilities and related equipment, observation of the 1988 Emergency

Exercise and interviews with personnel.

No violations of NRC requirements were identified during the course of this

inspection. However, there were areas identified requiring further review

and evaluation. These items are identified as Open Items in the Appendix

to this letter, and are also described in the enclosed appraisal report.

In accordance with 10 CFR 2.790 of the Commission's regulations, a copy of

this le'.ter, the enclosures, and your response to this letter will be placed

in the NRC Public Document Room.

We will gladly discuss any questions you have concerning this inspection.

Sincerely,

w0riginal eftmod Fy T3. MfA"

$v W. D. Shafer, Chief

Emergency Preparedness and

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So Radiological Protection Branch

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UO Enclosures:

Q$ 1. Appenc'ix, Open Items ,.

-O 2. Inspection Report <

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Union Electric Company 2

JU L 131988

Distribution

cc w/ enclosures:

A. P. Neuhalfen, Manager Quality

Assurance

Tom P. Sharkey, Supervising

Engineer, Site Licensing

DCD/DCB (RIDS)

Licensing Fee Management Branch

Resident Inspector, RIII

Region IV

Resident Inspector, Wolf Creek

K. Drey

Chris R. Rogers, P.E.

Utility Division, Missouri

Public Service Commission

CFA, Inc.

Gerald Charnoff, Esq.

Thomas Baxter, Esq.

R. A. Kucera, Deputy Director,

Department of Natural Resources

W. Travers, EPB, NRR

R. Bissell, FEMA, RVII

,

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' APPENDIX

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APPRAISAL OPEN ITEMS

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1. Open Item No. 50-483/88009-01: Information on how the TSC ventilation

system was designed to operate could not be found. There was no physical

indication or quantitative instrumentation available to determine if a

positive pressure is maintained in the TSC. In reviewing conceptual

design documentation and shielding calculations, reference was made to

a pressurized ventilation system for_the TSC and the EOF. Shielding

calculations for both the TSC and the EOF appear to have been made

assuming a pressurized and filtered ventilation system.

It could not be determined how much of a differential pressure should

exist between the inside and outside of the TSC. When the system is

in emergency mode there is no evidece of a positive pressure in the

building when opening an outside door.

2. Open Item No. 50-483/88009-02: There was no physical indication or >

quantitative instrumentation available to' determine if a positive pressure i

is maintained in the EOF, Information in the FSAR merely stated that the

HVAC system for the EOF is similar to that of the TSC except the system

contained only a HEPA and no charcoal filters. Charcoal filters are not

required because this EOF is within ten miles and has a backup EOF

(Reference NUREG-0737, Supplement No. 1). Oose calculations indicated that  :

the ventilation system in the filtration mode should operate with a

positive pressure. There was no evidence of a positive pressure in the

building when opening an outside door.

Since the shielding calculations were performed assuming a pressurized

ventilation system, it cannot be verified that the EOF is capable of  :

providing the stated protection factor.

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