ML19309F627
| ML19309F627 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 04/07/1980 |
| From: | James O'Reilly NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | Parker W DUKE POWER CO. |
| Shared Package | |
| ML19309F629 | List: |
| References | |
| NUDOCS 8004300205 | |
| Download: ML19309F627 (2) | |
See also: IR 05000269/1979037
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UNITED STATES
NUCLEAR REGULATORY COMMISSION
800480 #
REGION 11
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101 MARIETTA ST., N.W., SUITE 3100
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ATLANTA, GEORGIA 30303
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APR 071980
In Reply Refer To:
RII:DRQ
50-269/79-37
50-270/79-34
50-287/79-37
Duke Power Company
Attn:
W. O. Parker, Jr.
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Vice President, Steam Production
Post Office Box 2178
Charlotte, NC 28242
Gentlemen:
Thank you for your letter of March 3,1980, informing us of steps
you have taken to correct an item of noncompliance concerning
activities under NRC Operating License Nos. DPR-38, DPR-47 and
DPR-55 brought to your attention in our letter of February 6,1980.
We will examine your corrective actions with respect to this item
of noncompliance during subsequent inspections.
In your letter,
you also took exception to certain items identified in our letter.
In answer to your response to Item A. of the Notice of Violation,
we conclude that the loss of power to the KI Bus does constitute
a specific and foreseen potential malfunction of a system.
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failures of non-nuclear instrumentation (NNI) and/or integrated
Similar
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control system (ICS) power have occurred in the past, at Oconee
as well as other Babcock and Wilcox designed facilities, which have
led to transient situations involving loss of adequate information
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to the operator.
In light of the previous documented experience
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with this loss of power problem and the potential severity of the
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consequences, it is our position that an adequate Emergency Procedure
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should have been provided prior to the November 10, 1979, event.
Therefore, our position on Item A. of the Notice of Violation remains
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unchanged and the item remains an item of noncompliance.
However, no further response to this item is necessary as your letter
outlined the corrective actions you plan to take.
We will examine
those corrective actions and plans with respect to the item of
noncompliance during subsequent inspections.
In answer to your response to the Notice of Deviat-ion dealing with
prompt NRC notification, we believe the requirements of IE Bulletin
79-05B are explicitly clear in this area.
It is our position that
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APR 0 7 ;33g
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Duke Power Company
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that Oconee Unit 3 was not in a controlled or expected condition of
operation during the transient event which occurred on November 10, 1979.
Due to the combination of a lack of adequate plant status.information
available to the operator and the lack of an adequate Emergency Proce-
dure for this malfunction, the operators were not able to fully cope with
the event in a safe manner. Although it is acknowledged that the
operators took cetion during the early phase of the transient, it is
also noted that the Reactor Coolant System cooldown limits were exceeded
during the recovery phase as a result of equipment responding in an
uncontrolled and unpredicted manner.
Therefore, our position on the
Notice of Deviation remains unchanged and the Deviation remains as
originally identified.
Your procedures should be revised as necessary to assure notification of
NRC within one hour of the start of any future similar type occurrences,
as required by 10 CFR 50.72.
Therefore, we request that, with regard to
this deviation, that you provide us in writing within 20 days of our
receipt of this letter your comments including a description of cor-
rective actions that have been or will be taken by you, and the cor-
rective actions which will be taken to avoid further deviations and
the date correcitve actions were or will be completed.
Should you desire further discussion of this matter we will be happy
to arrange a meeting at a mutually convenient time in our Atlanta Offices.
We appreciate your cooperation with us.
Sincerely,
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James P. O'Reilly
Director
cc:
J. E. Smith
Station manager
Post Office Box 1175
Seneca, SC 29678
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