ML19351G077
| ML19351G077 | |
| Person / Time | |
|---|---|
| Site: | Pilgrim |
| Issue date: | 01/12/1981 |
| From: | Brunner E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | Morisi A BOSTON EDISON CO. |
| Shared Package | |
| ML19351G078 | List: |
| References | |
| NUDOCS 8102230075 | |
| Download: ML19351G077 (2) | |
See also: IR 05000293/1980026
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UNITED STATES
NUCLEAR REGULATORY COMMisslON
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Docket No. 50-293
JAN 121981
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Boston Edison Company M/C Nuclear
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Nuclear Operations Support Manager
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800 Boylston Street
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Boston, Massachusetts 02199
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Gentlemen:
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Subject:
Inspection 50-293/80-26
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This refers to your letter dated November 3,1980, in response to our letter
dated October 7,1980.
Thank you for informing us of the corrective and preventive actions documented
in your letter.
Your request that item B of the Notice of Violation in our
letter of October 7,1980, be withdrawn cannot be granted.
The citation was
made for your failure to report instrument setpoint drift outside a Technical
Specification (T.S.) Limiting Safety System Setting (L.S.S.S.); specifically
your failure to repcrt under T.S. 6.9.B.2.a the discovery of one of six Average
Power Range Monitor ( APRM) 120 percent lamp trip setpoints at a power level
setting above that required by T.S. 2.1. A.1.a.
As you pointed out, we do not
require reporting under T.S. 6.9.B.2.bithe failure of a single instrument channel
when the minimum number of operable channels required by T.S. 3.1 are maintained,
without entry into an L.C.0, action statement.
In accordance with Section 2.790(d) of the NRC's " Rules of Practice," r..rt 2,
Title 10, Code of Federal Regulations, documentation of findings of the control
and accounting procedures for safeguarding special nuclear materials and facility
security procedures are exempt from disclosure; therefore, your response letter
will not be placed in the Public Document Room.
Your cooperation with us is appreciated.
The purpose for requiring a report
pursuant to T.S. 6.9.B.2.a of an instrument setpoint drift outside the limits of
L.S.S.S., when the single failure of the same instrument would not be reportable
under T.S. 6.9.B.2.b, is to identify instances c3 instrument failures not detectable
without testing, that could indicate your surveillance test interval is excessive
or that setpoint margins are inadequate.
120 2230015
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Boston Edison Company M/C Nuclear
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JAN 121981
On December 19, 1980, this position was communicated to you during a telephone
discussion between Mr. R. fiachon and other members of your staff and Mr. T.
Martin of this office.
It is our understanding that in the future, conditions
reportable under T.S. 6.9.B.2.a will be reported as required, whether or not
those conditions are reportable under T.S. 6.9.B.2.b.
If our understanding of
your plans are in error, please contact this office by telephone and in writing
within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> of receipt of this letter.
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Sincerely.
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idon J. Brunner, Chief
Reactor Operations and Nuclear
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Support Branch
cc:
R. D. Machon, Nuclear Manager - Pilgrim Station
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