ML20236M257
| ML20236M257 | |
| Person / Time | |
|---|---|
| Site: | Calvert Cliffs  |
| Issue date: | 11/09/1987 |
| From: | Tiernan J BALTIMORE GAS & ELECTRIC CO. |
| To: | NRC OFFICE OF ADMINISTRATION & RESOURCES MANAGEMENT (ARM) |
| References | |
| NUDOCS 8711130056 | |
| Download: ML20236M257 (2) | |
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BALTIMORE
- GAS' AND 1
~ ELECTRIC -
p CHARLES CENTER R O. BOX 1475'a BALTIMORE. MARYLAND 21203 I
JOSEPH A.TIERN AN Veer Passiocur NUCLcAR ENcROY November 9, '1987-q d
U. S.' Nuclear Regulatory Commission Washington, DC 20555 -
l ATTENTION:
Document Control Desk.-
SUBJECT:
Calvert Cliffs Nuclear. Power Plant i
Unit Nos.'l & 2; Docket Nos. 50-317 & 50-318 Reolv to NRC Insoection Recort Nos. 50-317/87-12: 50-318/87-13 Gentlemen:
' The subject ' inspection report identified one Unresolved Item. regarding' 'the' maintenance d
and calibration of' safety-related analog ~ instruments that. are. not specifically l
addressed by Technical Specifications. Enclosure' (1).provides. Lour, actions to resolve ~-
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- this item.
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- Should you ~have any further questions. regarding this matter, we' will be pleased to discuss ' them. with you.
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Very truly yours, x
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JAT/LSL/ dim Enclosure j
cc:
D. A. Brune, Esquire j
J. E.
Silberg, Esquire
. R. A.Capra, NRC i"
S. A. McNeil, NRC W. T. Russell, NRC T. Foley/D. C. Trimble, NRC
' N. J. Blumberg, NRC
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ENCLOSURE (1)
REPLYTO NRCINSPECTION REPORT l
50-317/87-12; 50-318/87-13 l
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l The subject inspection report identified one Unresolved Item (50-317/87-12-01) regard-ing the maintenance and calibration of safety-related analog instruments that are not specifically covered by Technical Specifications.
Specific pre-approved acceptance criteria for the calibration of these instruments were not maintained in either a file i
or the calibration procedure. However, the inspector noted that Calvert Cliffs was in the process of establishing such criteria through the use of Master Calibration Data Sheets (MCDS).
We have determined that our MCDS program should address additional safety-related j
instruments beyond those discussed during the inspection. The original scope included
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only safety-related analog instruments not covered by Technical Specifications. We are including safety-related instruments with specific quantitative setpoints, as well as safety-related analog instruments which are covered by Technical Specifications.
Issuing MCDS for these additional instruments provides consistent, detailed guidance to our technicians.
Documentation substantiating acceptance criteria will be compiled in easily accessible i
files. This was not part of the original scope, but will provide clear records which can be easily maintained and audited. We are providing a high level of detail on each MCDS, making them accessible sources of design information for calibration and planning of instrument calibration activities.
As a
- result, each MCDS and associated documentation will be as useful a product as possible for technicians, maintenance planners, and engineers.
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We have performed a detailed analysis of all work required to generate each MCDS, 4
including in-field verification of equipment.
Approximately 1700 safety-related
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' instruments will have a MCDS. Of these, approximately 1100 instruments are analog l
instruments not covered by Technical Specifications.
I We are approaching the effort in a systematic manner (i.e., by system and/or type of instrument), and are issuing each MCDS as it is generated and approved. To the extent l
practical, we will first issue MCDSs for those instruments discussed during the exit 1
meeting. Based on this, we expect to complete the approximately 1100 MCDSs (for safety-related analog instruments not covered by Technical Specifications) by December 31, 1988.
While the above MCDS program goes beyond that originally discussed during the inspection (as well as regulatory requirements), it wili be more useful if implemented in this manner.
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