ML20236G996
| ML20236G996 | |
| Person / Time | |
|---|---|
| Site: | Dresden  |
| Issue date: | 06/26/1998 |
| From: | Grant G NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Kingsley O COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20236G997 | List: |
| References | |
| 50-237-98-14, 50-249-98-14, NUDOCS 9807070040 | |
| Download: ML20236G996 (3) | |
See also: IR 05000237/1998014
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UNITED STATES
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NUCLEAR REGULATORY COMMISSION
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801 WARRENVILLE ROAD
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LISLE, ILLINOIS 60532-4351
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June 26, 1998
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Mr. Oliver D. Kingsley
President, Nuclear Generation Group
Commonwealth Edison Company
ATTN: Regulatory Services
Executive Towers West 111
1400 Opus Place, Suite 500
Downers Grove, IL 60515
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SUBJECT:
DRESDEN INSPECTION REPORT 50-237/98014(DRP); 50-249/98014(DRP)
Dear Mr. Kingsley:
On April 3 through May 27,1998, the NRC performed an inspection of your Dresden Nuclear
Power Station. The enclosed report presents the results of this inspection.
During this inspection period, a safety-conscious approach characterized the overall conduct of
activities at the Dresden station. The operators generally performed well during one planned
reactor shutdown, two automatic and one manual reactor scrams, and five reactor startups.
However, multiple material condition deficiencies challenged the operators. For example, the
operators were required to scram the reactor in response to a loss of condenser vacuum caused
by a leaking cross-around relief valve.
The unavailability of the high pressure coolant injection (HPCI) system continued to be a problem
at Dresden during this inspection period. Operators twice declared the Unit 2 HPCI system
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inoperable due to material condition failures. One of these failures involving the gland seal
leakoff condenser level switch has been a multiple, repeat failure with several occurrences over
the past year.
Continuing a theme documented in previous inspection reports, material condition failures and
deficiencies challenged and unnecessarily distracted the control room operators. In addition to
the reactor scram mentioned above, equipment problems caused difficulties in establishing a
cold shutdown condition, a loss of reactor feed pump ventilation during a reactor startup, and the
need for operators to establish attemate methods of reactor water level control following two
reactor scrams.
Continuing another theme from previous inspection reports, inadequately prepared procedures
and written instructions created adverse conditions that required station personnel to respond.
Examples included an automatic reactor scram due to an inadequate installation specification in
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' a modification, an unnecessary entry into a Technical Specification limiting condition for
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operation action statement due to poor electromatic relief valve surveillance instructions, and a
potential noncompliance with a license condition for main steamline radiation monitor alarms due
to another modification with incorrect specification .
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9807070040 900626
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ADOCK 05000237
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O. Kingsley
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'In accordance with 10 CFR 2.790 of the NRC's." Rules of Practice," a copy of this letter, the
enclosures, and your response will be placed in the NRC Public Document Room.
- Sincerely,
/s/ Marc L. Dapas for
Geoffrey E. Grant, Dire.ctor
Division of Reactor Pr>Jects
Docket Nos.: 50-237;50-249
' Enclosure:
. inspection Report 50-237/98014(DRP);
50-249/98014(DRP)
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cc w/ encl:
M. Wallace, Senior Vice President
D. Helwig, Senior Vice President
G. Stanley, PWR Vice President
J. Perry, BWR Vice President
D. Farrar, Regulatory
Services Manager -
1. Johnson, Licensing Director
DCD - Licensing
M. Heffley, Site Vice President
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P. Swafford, Station Manager
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F. Spangenberg, Regulatory Assurance
Manager
R. Hubbard
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N. Schloss, Economist
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~ Office of the Attomey General
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State Liaison Officer
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. Chairman, lilinois Commerce
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Commission
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LDOCUMENT NAME: G:\\DRES\\DRE98014.DRP
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DATE
06/d/98
06/23/98
06/26198 ~
OFFICIAL RECORD COPY
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O. Kingsley
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Distribution:
SAR (E-Mail)
Project Mgr., NRR w/enci
C. Paperiello, R!li w/enci
J. Caldwell, Rlli w/enci
B. Clayton, Rlli w/enci
SRI Dresden w/enci
DRP w/ encl
TSS w/enci
DRS (2) w/enci
Rlli PRR w/ encl
PUBLIC IE-01 w/enci
Docket File w/enci
GREENS
LEO (E-Mail)
DOCDESK (E-Mail)