ML20217A760
| ML20217A760 | |
| Person / Time | |
|---|---|
| Site: | LaSalle  |
| Issue date: | 10/06/1999 |
| From: | Leach M NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Kingsley O COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML20217A765 | List: |
| References | |
| 50-373-99-15, 50-374-99-15, NUDOCS 9910120079 | |
| Download: ML20217A760 (3) | |
See also: IR 05000373/1999015
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. UNITED STATES '
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NUCLEAR REGULATORY COMMISSION
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REGION 111
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801 WARRENVILLE ROAD
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. LIS' E. ILLINOIS 60532 4351'
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October 6, 1999
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Mr. Ol'ver D. Kingsley .
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President, Nuclear Generation Group
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Commonwealth Edison Company-
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' ATTN: Regulatory Services
Executive Towers West lll
1400 Opus Place, Suite 500 -
Downers Grove, IL 60515
' SUBJECT:
LASALLE INSPECTION REPORT 50-373/99015(DRP); 50-374/99015(DRP)
Dear' Mr. Kingsley:
This refers to the inspection conducted July 29 through September 16,1999, at the LaSalle
Nuclear Power Station. The purpose of the inspection was to determine whether activities
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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.
.Overall, y' ur staff demonstrated a good safety focus, and plant operations, for the most part,
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were conducted appropriately. Human performance errors, however, were involved in two
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automatic reactor shutdowns that occurred within a 13-day period. In s first automatic reactor
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shutdown, main control room operator responte to reactor water level control problems was not
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in accordance with abnormal operating procedures and training. In the second automatic
reactor shutdown, operations outside of established procedures, incomplete. communications,
inadequate pre-job briefs, lack of direct oversight and supervision of activities outside of the
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main control room, and itadequate main control room annunciator response led to a feed water
. transient and subse9 nt automatic reactor shutdown during on-line turbine-driven reactor
- feedwater pump maintenance' activities.
Also,- challenges to main control room operatois continued to occur during this inspection period
led to the Unit 2 reactor automatic reactor shutdown was initiated by a loose mounting plate on
a turbina-driven reactor feed pump control oil servo assembly.- During the subsequent Unit 2
T startup operators were further challenged when the rod sequence control system led to
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unanticipated rod blocks and a 5-hour delay in the pulling of control rods, in addition,
maintenance personnel challenged control room operators when they took actions whbi were
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not prescribed by an approved troubleshooting plan and caused a combined intermediate valve -
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between a moisture separator reheater and a low pressure turbine to change position
unexpectedly. '
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LO. Kingsley : ,
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Based on the results of this inspection, the NRC has determined that one' violation of NRC
requirements occurred. This violation is being treated as a Non-Cited Violation (NCV),
consistent with Appendix C of tiie Enforcement Policy. The NCV is described in the subject
inspection report. If you contest the violation or severity level of the NCV, you should provide a
response within 30 days of the date of this inspection' report, with the basis for your denial, to
the Nuclear Regulatory Commission, ATTN: Document Control Desk, Washington
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DC 20555-001, with copies to the Regional Administrator, Region Ill, and the Director, Office of
' Enforcement, United States Nuclear Regulatory Commission, Washington DC 20555-001.
In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter, its
enclosure, and your response, if you choose to provide one, will be placed in the NRC Public
Document Room.-
Sincerely,
/s/ Melvyn Ieach
Melvyn Leach, Chief
Reactor Projects Branch 2
Docket Nos'.. 50-373; 50-374-
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! License Nos.: NPF-11; NPF-18
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Enclosure:
Inspection Report 50-373/99015(DRP);
50-374/99015(DRP) -
cc w/ encl:
D. Helwig, Senior Vice President, Nuclear Services
C. Crane, Senior Vice President, Nuclear Operations
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H. Stanley, Vice President, Mclear Operations .
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R. Krich, Vice President, Regulatory Services
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DCD - Licensing
J. Benjamin, Site Vice President
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fJ. Meister, Station Manager '
F. Spangenberg, Regulatory Assurance Supervisor
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M. Aguilar, Assistant Attorney General
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State Liaison Officer
Chairman, Illinois Commuce. Commission
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DOCUMENT NAME: G:\\LASA\\LAS99015 DRP.WPD
To- eive a copy of this document. Ind6cets in the im t ' = Copy without anschment/ enclosure "E" = Copy with attachmer.'.' enclosure "N" = No
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DATE
10/4/99
OFFICIAL RECORD COPY
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Distribution:
AJM (E-Mail)
' RPC (E-Mail) '
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. DMS6 (Project Mgr.) (E-Mail)
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J. Caldwell, Rlli w/enci
B. Clayton, Rlli w/enci
SRI LaSalle w/enci
DRP wienci
DRS w/enci
Rill PRR w/enct
PUBLIC IE-01 w/enci
' Docket File w/enci
GREENS
LEO (E-Mail)
DOCDESK (E-Mail) '
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