ML19207B162
| ML19207B162 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 09/19/1972 |
| From: | Howard E NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I) |
| To: | METROPOLITAN EDISON CO. |
| Shared Package | |
| ML19207B163 | List: |
| References | |
| NUDOCS 7908230476 | |
| Download: ML19207B162 (2) | |
See also: IR 05000289/1972012
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~^ATOMICINERGY COMMISSION
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J. B. Henderson, Chief, Reactor Construction
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METROPOLIIAN EDISON COMPANY
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THREE MILE ISIAND UNITS 1 AND 2
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RO REPORI No. 50-289/72-12, cn-M0/72-04
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The subject inspection report is ' forwarded for your information and
referral to Licensing.
_ . . . . .
The management interview was not held on the day the inspection was
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concluded because of the unavailability of adequate levels of manage-
ment at the site.
The manage =ent meeting was held one week later.
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Two items of nonconformance were identified and documented in our
letter to the licensee.
We have concerns in the area of electrical cable routing since the
applicant has not fully developed a system for independent verifica-
tion of cable routing, at least one that is readily field auditable by
our inspectors. The applicant is considering electronic checking of
cable routing.
.
We recommend that the follcuing questions relating to the reactor control
console, identified by our inspectors, be referred to Licensing for
review and resolution:
1.
The licensee is using a three-light display (only two of which are
on at all times) adjacent to a circuit breaker switch mounted on
the console to provide information for the centrol roce operator
relative to the availdoility of control de on vital circuit breakers,
which does not appear to =eet the intent of IEEE-279.
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2.
There is a series of terminal arrays associated with engineered
safeguards circuits which are located in the cable spreading
room below the console which are to be left open.
This action
would expose the terminals to hazards remaining to the end of
construction and to additional hazards encountered during trouble-
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shooting and maintenance.
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3. . The separation criteria to be applied to cabling located b 2 neath
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the console has not been defined.
The licensee has taken the posi-
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tion that the terminal array is an extension of the console even
though located in the room below that; the re fore , he need not
satisfy criteria established for trays.
W
E. M. Howard, Chief
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Reactor Construction Br., RO:I
Enclosure:
Subject Inspection Report
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P. A. Morris , R0
H. D. Thornburg, R0
R. H. Engelken, RO
J. G. Kepplar, R0
R. Minogue, RS (3)
R. S . Boyd, L (2)
R. C. DeYoung, L (2)
D. J. Skovholt, L (3)
H. R. Denton, L (2)
RO Files
DR Central Files
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