ML20210U320

Forwards Insp Repts 50-373/99-12 & 50-374/99-12 on 990623-0728.No Violations Noted

ML20210U320
Person / Time
Site:	LaSalle
Issue date:	08/17/1999
From:	Leach M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III)
To:	Kingsley O COMMONWEALTH EDISON CO.
Shared Package
ML20210U324	List: IR 05000373/1999012 ML20210U320
References
50-373-99-12, 50-374-99-12, NUDOCS 9908200057
Download: ML20210U320 (3)

See also: IR 05000373/1999012

Text

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UNITED STATES

1. g ta49'og NUCLEAR REGULATORY COMMISSION

[ o REGION lli

jj j 801 WARRENVILLE ROAD

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• LISLE. ILLINOIS 60532-4351

%*****/ August 17, 1999

Mr. Oliver D. Kingsley

President, Nuclear Generation Group

. Commonwealth Edison Company

ATTN: Regulatory Services

Executive Towers West til i

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1400 Opus Place, Suite 500

Downers Grove,IL 60515

SUBJECT: LASALLE INSPECTION REPORT 50-373/99012(DRP); 50-374/99012(DRP)

Dear Mr. Kingsley: l

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This refers to the inspection conducted June 23 through July 28,1999, at the LaSalle Nuclear l

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Power Station. The purpose of the inspection was to determine whether activities authorized by

the license were conducted safely and in accordance with NRC requirements. At the ,

conclusion of the inspection, the findings were discussed with those members of your staff  !

identified in the enclosed report. 1

Overall, your staff demonstrated a good safety focus and dual plant operations were conducted

appropriately. Operators conducted activities in the main control room conservatively and

safely. In particular, activities performed as a result of the lake temperature excursions were

timely and supported safe plant operations. The conduct of most engineering and radiological

control activities were performed correctly.

However, challenges to the main control room operators continued during this inspection period

due to degraded equipment issues. For example, the continued cycling of the Unit 2 D vacuum

breaker throughout the inspection period in conjunction with the failure of position indication on

the Unit 2 A vacuum breaker early in the inspection period required operators to take significant

compensatory actions, especially during Unit 2 emergency diesel generator testing. In addition,

some repeat items indicated corrective actions implemented to address deficient conditions did

not preclude recurrence. These included several partial actuations of the reactor protection

system including one where corrective actions from two prior instances within the last 6 months

were ineffective.

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9908200057 990817

PDR ADOCK 05000373

G PDR

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O. Kingsley - -2-

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In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter and the

enclosure will be placed in the NRC Public Document Room.

,

l Sincerely,

Original signed by

Melvyn Leach, Chief

Reactor Projects Branch 2

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. Docket Nos. 50-373; 50 374 -

License Nos. NPF-11; NPF-18 i

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Enclosure: . Inspection Report 50-373/99012(DRP);

50-374/99012(DRP) .

Jec w/enci- ' D. Helwig, Senior Vic9 President, Nuclear Services i

C. Crane, Senior Vice President, Nuclear Operations

H. Stanley, Vice President, Nuclear Operations

R. Krich, Vice President, Regulatory Services ,

DCD - Licensing

J. Benjamin, Site Vice President

J. Meister, Station Manager

F. Spangenberg, Regulatory Assurance Supervisor l

. M. Aguilar, Assistant Attorney General

. State Liaison Officer

Chairman, Illinois Commerce Commission .

DOCUMENT NAME: G:\LASA\LAS99012.DRP-

, To receive e copy of this document, Indicate in the box "C" = Copy without ettschmenhenclosure T = Copy we ettschment/ enclosure "Ns No

em

g OFFICE Rlli _ lu Rill lN Rlll lW l

NAME- JHansen:coWSer RWestberg %) MLeach#A'A -

DATE 08/8/99 08A3/99 08//7/99

OFFICIAL RECORD COPY

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O. Kingsley -3-

Distribution:

AJM (E-Mail)

RPC (E-Mail)

Project Mgr., NRR w/enci

J. Caldwell, Rlll w/enci

l B. Clayton, Rlli w/enct

SRI LaSalle w/enci

DRP w/enct

DRS w/enci

Rlli PRR w/ encl

PUBLIC IE-01 w/ encl

Docket File w/ encl.

GREENS

, IEO (E-Mail)

DOCDESK (E-Mail)

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