ML19332E394
| ML19332E394 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 11/28/1989 |
| From: | Miller H NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Reed C COMMONWEALTH EDISON CO. |
| Shared Package | |
| ML19332E395 | List: |
| References | |
| NUDOCS 8912070170 | |
| Download: ML19332E394 (4) | |
See also: IR 05000254/1989017
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NOV 2 81989
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Docket No. 50-254
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Docket No. 50-265
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Commonwealth' Edison Company
ATTH:' Mr. Corde n Reed
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rienior Vice President
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- Post Office Box 767-
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Gentlemen:
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' This reftra to toe Special Haintenance Team Inspection perfcrmed by
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Mr. J. rl. Heisler and others of this office on September 18-22, October 2-6,
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.and 18,~1989.- This inspection covered activities at the Quad Cities Nuc1 car
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Generat'.ng Station, Un3ts 1 and 2, as authorited by NRC Operating Licenses
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No. DPR-09 and DPR-30, and-the inspection findings that were discussed with
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Mr. D. Galle and others of your staff at the conclurion of the inspection.
The inspection was conducted during an outage to assess and evaluate your
support and implementation-of maintenance to assure that plant structures,
systems, and components reliably perform on demand. Various activities were.
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evaluated to determine if maintenance was accomplished, effective, and
' adequately assessed by your own quality verification process.
The enclosed copy of our inspection report identifies specific areas examined
during.the' inspection. Within these areas, the inspection consisted of a
selective examination of procedures and representative records, observations,
and interviews with personnel.
In an attempt to focus on those activities
that are most risk significant, insight from a Quad Cities Probabilistic Risk
Assessment Study performed by the NRC was used to select systems and
components important to safety.
The inspection team concluded that maintenance at Quad Cities Nuclear Generating
Station was, in general, satisfactorily performed, effective, and well managed.
-The team identified strengths as well as weaknesses in the maintenance program.
The Executive Summary highlights our inspection findings, and Section 4.0 of the
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inspection report provides a synopsis of your maintenance program.
Some of the specific strengths noted by the inspection team were:
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Management comitment to improve station maintenance through reliability
centered maintenance based on System Unavailability Monitoring Studies
(SUMS), and Component Failure Analysis Reports (CFAR) Program, and the
introduction of new maintenance techniques such as laser alignment, new
diagnostic testing methods for MOVs, and vibration analysis of station
equipment.
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Commonwealth Edison Company
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An excellent load monitoring program to track load changes on power sources.
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Good communications program for informing the plant staff of management
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goals and objtctives and industry initiatives.
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Some of the mere significant weaknesses were:
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Deficiencies in procedural compliance und content that resulted 4n
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failure to follow acceptance criteria for establishing cable pull
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tension, undocumented lifted leads during maintenance and no acceptance
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' criteria in procedures for diesel and HPCJ overspeed tests.
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Inadequate engineering support of mt.intenance as indicated by inadequate
seismic evaluation of the replacement impeller for the HPCI booster
pump, inadequate vendor manual review that omitted some vendor
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recommendations from the preventive maintenance program, cod minimal
system eagineering involvement in root cause analysis and trending.
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Inadequate corrective action that resulted in improper fuse replacement,
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one-third of the indicating lights being out on the control rod position
indicating panel in Unit 2, and lack of periodic testing and inspection of
the RCIC turbine overspeed trip linkage despite an LER being issued in
1986.
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Control of contractors as evidenced by a contractor using a MOV as a
work bench for cutting conduit, a contractor QC inspector not observing a
QC hold point during maintenance, and a contractor employee lying on bags
in a radiation controlled area.
During this inspection, certain of your activities appeared to be in violation
of NRC requirements as specified in the enclosed Notice. A written response
is required.
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In accordance with 10 CFR 2.790 of the Comission's regulations, a copy of-
this letter, the enclosures, and your response to this letter will be placed in
the NRC Public Document Room.
The responses directed by this letter and the accompanying Notice are not
subject to the clearance procedures of the Office of Management and Budget as
required by the Paperwork Reduction Act of 1980, PL 96-511.
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NOV 2 81989
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Comonwealth Edison Company
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We iv111 gladly discuss any questions you have concerning this inspection.
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Sincerely,
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Origim) nirgned by T. O. Martin (for)
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'h.. J. Miller. Direcht
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DhiLion of Reactor Laf ety
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Enciosures:
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Hotice of Violation
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Inspection Report
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No. 50-254/89017(DRS);
- No. 50-265/89017(DRS)
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cc w/rnelosures:
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T. Kovach, Nuc* ear
Licensing Manager
R. L. Bax, Station Manager
DCD/DCB (RIDS)
Licensing Fee Management Branch
Resident Inspector, Rill
Richard Hubbard
J. W. McCaffrey, Chief, Public
Utilities Division
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Comissioner Curtiss, OCM/JC
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K. Hart, NRR/LPED
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Division Directors. DRS
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RI, RII, RIV, and RV
T. Marsh, NRR/MEB
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EXECUTIVE SUMMARY
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An announced NkC team inspection was performed at Quad Cities Nuclear Station
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during the period September 18-22, October 2-6 and 18, 1989. The inspection
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was performed to evaluate the exte..t that a maintenance program had been
establi Aed and implemented at Quad Cities to assure the preservation or
restoration of the availability and reliability of plant structures, systems,
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and components to operate on demand. Three major areas were assessed,
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Aneluding ovoroll plast performance ss affected by maintenance, management
support of maintenance, and implementatiorn
Tc accomplish this task, several
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maintenance related 9etivities were-evaluated to determine if maintenance was
accomplished, effective, and self-assessed.
Sf;engthsg
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The inspection tearc noted specific strcngths in it'e areas of management viger
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in introducing nee maintenance techniques such as laser alignment of rotating
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equipment and adranced testing for MOVs; reliability centered maintenance
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program based on System Unavai' ability Monitoring Studies (SUMS); Component
Failure Analysis Report (CFAR) program based on industry experience; ciectrical
load monitoring program *, ALARA su) port for major maintenance; unique color
coding to clearly differentiate tie units; and communications to staff on
industry initiatives, management goals and objectives with regard to maintenance.
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Ueaknesses
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Poor _ technical support in the development of procedures resulted in a lack of
acceptance criteria for the overspeed trip settings in test procedures for
overspeed trip tests for emergency diesels-and HPCI turbines. Additionally,
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the PM procedures did not include the vendor recommendations for seriodic
linkage tests of HPCI and RCIC turbines, in spite of previous pro)1 ems with the
RCIC turbine overspeed linkage. Weaknesses were noted with the level of system
awareness and technical knowledge of system engineers and their lack of
involvement in failure and root cause analysis. The amount of quality control
coverage of electrical and I&C maintenance work was weak.
Instances of poor
contractor control were noted, in that no work packages were noticed near a job
site with work in progress, misuse of plant equipment by a contractor occurred,
and a contractor was noticed to be inattentive in a radiation area. A weakness
was also observed in the uskeep of control rod position indication status in
-the control room in that a>out one-third of the CRD position indications on
Unit 2 were blank due to burned out light bulbs.
Conclusion
Results of this inspection showed the maintenance program at Quad Cities to be
generally well managed and effectively implemented. Based on the review of past
work activities, observations of ongoing work activities, work controls, and
attempts at self-assessment, the inspectors determined that overall electrical,
mechanical, and I&C maintenance and support activities were adequately performed
to maintain operability of components at a level commensurate with the
components' function.
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