ML20236R803
| ML20236R803 | |
| Person / Time | |
|---|---|
| Site: | Perry  |
| Issue date: | 07/16/1998 |
| From: | Grobe J NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION III) |
| To: | Myers L CENTERIOR ENERGY |
| Shared Package | |
| ML20236R805 | List: |
| References | |
| 50-440-98-11, NUDOCS 9807220284 | |
| Download: ML20236R803 (4) | |
See also: IR 05000440/1998011
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July 16, 1998-
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. Mr. Lew W. Myers
- Vice President - Nuclear
Centerior Service Company
P, O. Box 97. A200
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- Perry, OH 44081
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SUBJECT:
NRC INSPECTION REPORT NO. 50-440/98011(DRS) AND NOTICE OF
VIOLATION -
Dear Mr. Myers:
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On May 22,1998, the NRC completed a medium and low-voltage power circuit breaker
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inspechon at your Perry Nuclear Plant. The enclosed report presents the results of that
inspection.
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The inspection involved examination of maintenance and engineering related activities. Areas -
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examined during the inspection are identified in the report. Within these areas, the inspection
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consisted of selective examinations of vendor manuals, industry correspondence, calculations, -
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test records, procedures and interviews with maintenance and engineering staff.
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Following NRC identification in 1994 of inadequate breaker maintenance at Perry (report
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440/94006), you initiated an aggressive refurbishment plan in 1995/1996 and refurbished all
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medium and low-voltage AC power circuit breakers. However, the team was concemed that
most of the DC breakers have not yet been refurbished. You have committed to expedite the
schedule for refurbishment of the DC breakers. The team concluded that, in general, there had
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been very good evaluation and disposition of NRC, vendor, INPO, and other industry
experience information.~~
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The team identified two violations of NRC requirements. The violations are cited in the
enclosed Notice of Violation (Notice) and the circumstances surrounding the violations are
described in detail in the enclosed report. Please note that you are required to respond to this
letter and should follow the instructions specified in the enclosed Notice when preparing your
response. The NRC will use your response, in part, to determine whether further enforcement
action is necessary to ensure compliance with regulatory requirements.
The first violation involved inadequate breaker coil voltage calculations. The 125 Vdc system
voltage drop calculations, reviewed by the team, were not performed correctly and lacked rigor
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in term of design inputs and conclusions. For example, the calculations used non-conservative
cable lengths and did not consider the effect of aging factor, temperature correction factor and-
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design margins to determine the actual battery terminal voltage. The second violation pertained
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to inadequate test control of low voltage breaker tripping functions. The team identified several
instances of incorrect calculation of test parameters which were used during the test, resulting
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in indeterminate assurance of breaker overcurrent tripping function within prescribed acceptable
limits.
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We understand that pu are in the process of evaluating the effects of the use of an
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unapproved cleaning agent to clean electrical breaker components. We are concerned
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regarding the potential consequences of the use of the unapproved cleaner on arc chutes as
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well as the effect that the cleaner spray could have if it contacted other lubricated breaker
components. We request that you provide a response to the unresolved item
(50-440/98011-03(DRS) that includes your evaluation results.
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In accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter, its
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enclosures, and your response will be placed in the NRC Public Document Room (PDR).
Sincerely,
original /s/ J. A.'Grobe
John A. Grobe, Director
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Division of Reactor Safety
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Docket No. 50-440
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License No. NPF-58
Enclosures:
2. Inspection Report 50-440/98011(DRS)
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cc w/encis:
H. Hegrat, Manager
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Regulatory Affairs
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T. Rausch, Director, Quality
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and Personnel Development
R. Schrauder, Director
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Nuclear Engineering Department
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W. Kanda, General Manager
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Nuclear Power Plant Department
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N. Bonner, Director, Nuclear
Maintenance Department
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H. Bergendahl, Director
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Nuclear Services Department
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Ohio State Liaison Officer
R. Owen, Ohio Department
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of Health
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C. Glazer, State of Ohio
Public Utilities Commission
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See Attached Distnbution
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DOCUMENT NAME: G:DRS\\PER98011.DRS
(SEE PREVIOUS CONCURRENCE)
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OFFICE
Rill
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NAME
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Gardner F
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DATE
07/ /98-
07/ /98
07/ /98
07/jk98
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OlF1CIAL RECORD COPY
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to inadequate test control of low voltage breaker tripping functions. The team identified several
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instances of incorrect calculation of test parameters which were used during the test, resulting
in indeterminate assurance of breaker overcurrent tripping function within prescribed acceptable
limits. We also request that you respond to the unresolved item conceming the use of
unevaluated cleaning agent to clean electrical breaker components.
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in accordance with 10 CFR 2.790 of the NRC's " Rules of Practice," a copy of this letter, its
enclosures, and your response will be placed in the NRC Public Document Room (PDR).
Sincerely,
John A. Grobe, Director
Division of Reactor Safety
Docket No. 50-440
License No. NPF-58
Enclosures:
2. Inspection Report 50-440/98011(DRS)
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cc w/encis:
H. Hegrat, Manager
' Regulatory Affairs -
T. Rausch, Director, Quality
and Personnel Development
R. Schrauder, Director
Nuclear Engineering Department
W. Kanda, General Manager
Nuclear Power Plant Department
N. Bonner. Director, Nuclear
Maintenance Department
H. Bergendahl, Director
Nuclear Services Department
Ohio State Liaison Officer
R. Owen, Ohio Department
of Health
C. Glazer, State of Ohio
Public Utilities Commission
See Attached Distribution
DOCUMENT NAME: G:DRS\\PER98011.DRS
To ,soseve o espy of this dessunant, indecote In the bes: *C's Copy muhout : _ _ _ _ _
-- T e Copy weh Ja _. _
- 'If ale copy
OFFICE
Rill
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Rlli
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NAME
Falevits:sd
Gardner V
Kozak i
Grobe F
DATE
07/5/98
07/f/98
07/ ti/98 '
07/ /98
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OFRCIAL RECORD COPY
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- L. Myers
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Distnbution:
Project Mgr., NRR w/encls
C. Paperiello, Rlli w/encls
J. Caldwell, Rllt w/encls
B. Clayton, Rlli w/encls
- SRI Perry w/encls
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DRP w/encls
TSS w/ ends
DRS (2) w/encls
Rlli PRR w/encls.
PUBLIC IE-01 w/encls
Docket File w/encls
GREENS
LEO (E-Mail) ~
DOCDESK (E-Mail)
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