ML20236G399
| ML20236G399 | |
| Person / Time | |
|---|---|
| Site: | Maine Yankee |
| Issue date: | 10/28/1987 |
| From: | Johnston W NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Randazza J Maine Yankee |
| References | |
| NUDOCS 8711020522 | |
| Download: ML20236G399 (2) | |
See also: IR 05000309/1987012
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.00T 2 81987
Docket No. 50-309
Maine Yankee Atomic Power Company
ATTN: Mr. J. B. Randazza
Vice President
Nuclear Operations
83 Edison Drive
Augusta, Maine 04336
Gentlemen:
Subject:
Inspection No. 50-309/87-12
This refers to your letters dated September 22, 1987, and September 28, 1987 in
response to our letter dated August 21, 1987.
Thank you for informing us of the corrective and preventive actions documented
in your letter. These actions will be examined during a future inspection of
your licensed program.
Your cooperation with us is appreciated.
Sincerely,
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William V. Johnston, Acting Directing
Division of Reactor Safety
cc w/ encl.
C. E. Monty, President
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C. D. Frizzle, Assistant Vice President / Manager of Operations
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J. H. Garrity, Plant Manager
P. L. Anderson, Project Manager
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G. D. Whittier, Licensing Section Head
J. A. Ritsher, Attorney (Ropes and Gray)
Phillip Ahrens, Esquire
Public Document Room (PDR)
Local Public Document Room (LPDR)
Nuclear Safety Information Center (NSIC)
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NRC Resident Inspector
State of Maine
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vr.. VIAL RECORD COPY
RL MY 87-12 - 0001.0.0
10/20/87
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~ Maine Yankee Atomic Power Company
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bec w/enci:
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Region I Dccket Room (with concurrences)
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Management Assistant, DRMA (w/o enc 1)
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DRP Section Chief
H. Eichenholz, SRI, Yankee
P. Sears, LPM, NRR
Robert J. Bores, DRSS
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0FFICIAL RECORD COPY
RL MY 87-12 - 0002.0.0
10/20/87
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MaineYankee
RELIABLE ELECTRICITY FOR MAINE SINCE 1972
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EDISON DmVE .' AUGUSTA MAINE 04330 .(207) 622 4868
September 28, 1987
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MN-87-107
GDH-87-227
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United States Nuclear Regulatory Commission
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Atte'ntion:
Document Control Desk
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Washington, D. C.
20555
References:
(a)' License No. DPR-36 (Docket No. 50-309)
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(b) USNRC Letter to HYAPCo dated August 21, 1987 - Inspection
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Report No. 50-309/87-12
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-(c) HYAPCo Letter to USNRC dated September 22, 1987 (MN-87-105)
Subject: Maine Yankee Response to Inspection Report No. 50-309/87-12
Gentlemen:
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In Reference (c), Maine Yankee responded to the Notice of Violation
transmitted in Reference-(b).
After our response was sent to you, we
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. discovered that one statement in.the cover letter does not agree with the
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response in Attachment
A','
Therefore, ws would like to correct this
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inconsistency.
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In the cover letter we stated that full compliance was achieved prior to
resumption of power operation on August 24, 1987. However, the attachment'
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correctly indicates that full compliance will not be achieved until item b.1
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of the second violation is complete.
Thus, full compliance will not be
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achieved until September 25, 1987.
With the exception of this item, the
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remaining items were brought into cone liance prior to resumption of power
operation on August 24, 1987.
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If you should have any questions regarding this letter, please feel free
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to contact me.
Very truly yours,
HAINE YANKEE ATOMIC POWER COMPANY
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G. D. Whittier, Manager
Nuclear Engineering and Licensing
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cc: Mr. Victor Nerses
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Mr. Hilliam T. Russell
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Mr. Pat Sears
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Hr. Cornelius F. Holden
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MaineYankee
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RELIABLE ELECTRCTY FOR MAeNE SINCE 1972
EDISON oRIVE AUGUSTA. MAINE 04330 .(207) 622 4868
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September 22, 1987
HN-87-105
United States Nuclear Regulatory Commission
Attention:
Document Control Desk
Hashington, D. C.
20555
References:
(a)
License No. DPR-36 (Docket No. 50-309)
(b) USNRC Letter to HYAPCo dated August 21, 1987, Inspection
Report 50-309/87-12'
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Subject:
Inspection Report 87-12:
Response to Notice of Violation
Gentlemen:
This letter is in response to the Notice of Violation transmitted in
Reference (b) which identified violations concerning acceptance criteria for
testing of safety-related overcurrent devices and the reflection of field
installation of overcurrent devices on electrical drawings.
Attachment A
restates the Notice of Violation for clarity with our response to each item
following. As our response indicates, full compliance was achieved prior to
resumption of power operations on August 24, 1987 following the outage.
During the inspection, Maine Yankee committed to complete several actions
by August 31, 1987.
Due to the extended outage, these items were not
completed as originally anticipated.
He have discussed these issues and the
following scheduled actions with Mr. S. Pullani of your staff.
Based on commitments made as a result of the subject inspection, Maine
Yankee will:
1.
Revise the cable ampacity study to include feeder full load currents
by October 31, 1987.
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lUnitedStatesNuclearRegulatoryCommission'
Page Two
Attention: : Document-Control Desk
MN-87-105
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2.
Complete the breaker coordination study by October 31, 1987 and
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provide this information to the NRC-following completion.
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3.
Develop a formal procedure to track electrical load growth by October
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31, 1987.
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Determine the alternate solutions to address the limited short
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circuit' capability of the 6.9 kV and 4.16 kV switchgear by
October 31, 1987.
A plan and implementation schedule for a final
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solution will be made by January 31, 1988.
The NRC will be notified
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by letter.
We trust.this information is satisfactory.
However, if you should have
any questions, please. feel free to contact me.
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Very truly yours,
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, MAINE YANKEE ATOMIC POWER. COMPANY
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G. D. Whittier, Manager
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Nuclear Engineering and Licensing
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GDW/bjp
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Enclosure
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cc: Mr. Victor Nerses
Mr.- William T. Russell
Mr. Pat Sears
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Mr. Cornelius F. Holden
Mr. S. V. Pu11ani
NRC Region I
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ATTACHMENT A
MN-87-105
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A.
10 CFR 50, Appendix 8, Criterion XI, requires that safety related
components be tested in accordance with written test procedures which
incorporate acceptance limits contained in applicable design
documents. Maine Yankee Operations 0A Manual, Revision 3, Section
XI, Paragraph 4b, requires all departments to be responsible for
establishing test programs, procedures and acceptance criteria.
Contrary to the above, as of June 2,1987, safety related overcurrent
devices on 480 volt buses 7 and 8 were tested in accordance with
calibration procedure 5-77-3, Inspection and Repair of General
Electric AK-2 circuit breakers, Revision 16, which did not
incorporate acceptance limits contained in the design documents
(Drawings 1150-E-54A dated March 29, 1970 and 0108-8-9487 dated
October 15, 1970).
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This is a'Se~ verity 'Leve'l IV Violation.
Maine Yankee Resoonse
The setpoints for the overcurrent devices on Buses 7 and 8 were
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reestablished and the overcurrent devices were recalibrates as required.
Acceptance limits were established. A temporary step-by-step calibration
procedure for the overcurrent devices was written to include these
setpoints.
5.
Before the next scheduled surveillance on these overcurrent devices,
a step-by-step calibration procedure for overcurrent devices which
includes setpoints and acceptance limits will be developed.
Full compliance was achieved by June 17, 1987.
B.
10 CFR 50, Appendix B, Criterion VI, requires that drawings
(documents) including changes are reviewed for adequacy and used at
the location where the prescribed activity is performed.
Yankee Operations QA Manual, Revision 3,Section VI, Paragraph A,
requires measures to review and control documents including revisions
thereto.
Contrary to the above, as of June 2, 1987, the following drawings
were not revised to reflect the field installation in that:
9164L-SDE
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a.
l Drawing Il550-FE-1H, ~480V One 'Line Diagram Unit Substation,
Sheet 1, Revision 11.
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Field installation of overcurrent devices in positions 158,
15C,150 on Bus 8 and positions 138,13C,130 on Bus 7 were
rated 225 Amperes unlike the drawing-representation of 250
Amperes,
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2.
The overcurrent device installed at position 160 an Bus 8
was rated 600 Amperes unlike the drawing representation of
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350 Amperes.
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b.
Drawing 1150-FE-lC, One Line Diagram-480V HCC-7A, 8A and 138,
Revision 20.
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Field installation of molded case breaker in position 2FBR
was rated 15 Amperes unlike the drawing representation of
30 Amperes.
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2.
Field installation of molded case breakers in position 5
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RHR was rated 20 Amperes unlike the drawing representation
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of 30-Amperes.
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The lack of acceptance criteria for calibrating the overcurrent devices
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and the presence of overcurrent devices different than the plant design
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drawing can potentially degrade the performance of the safety related
-buses,
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This 'is a . Severity Level IV violation.
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Maine Yankee Resoonse
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Part b of this violation identifies ll50-FE-lC, Revision 20 as the drawing
that contained the discrepancy. He believe instead that it was electrical
one-line drawing 11550-FE-lL, Revision 21. Also field installation of the
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molded case breaker in position 2FBR was correctly indicated on the
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drawing to be rated at 70 amperes.
However, the field installation of the
molded case breaker in position 1FB was rated 15 amperes unlike the
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drawing representation of 30 amperes. We believe your concern was with
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position.1FB and not 2FBR.
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Haine. Yankee has reviewed all electrical one-line drawings for
safety-related ac and de buses for discrepancies between the installed
ratings for the protective devices and the drawing representation of the
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ratings. As a result of this review, several drawing revisions were
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implemented by June 30, 1987.
Prior to responding to this violation, it
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was discovered that Item b.1 of.this violation as corrected above had been
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overlooked when the drawing was revised.
This oversight has been promptly
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addressed and the drawing is being revised.
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6. - . Maine.' Yankee plans to review all electrical o'ne-line drawings for
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.non-safety related electrical busses and motor control' centers.by-
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January 1, 1989.
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Full'compliancewillbe, achieved'bySjptember 25, 1987,
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