ML19322A698
| ML19322A698 | |
| Person / Time | |
|---|---|
| Site: | Oconee  |
| Issue date: | 03/14/1972 |
| From: | Murphy C NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION II) |
| To: | |
| Shared Package | |
| ML19322A696 | List: |
| References | |
| 50-269-72-04, 50-269-72-4, NUDOCS 7911210740 | |
| Download: ML19322A698 (2) | |
See also: IR 05000269/1972004
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U. S. ATOMIC ENERGY COMMISSION
REGION II
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DIVISICIT OF COMPLIANCE
S
CO Inquiry Report No. 50-269/72 h
Subject: Duke Power Company
Seneca, South Carolina
License No.: CPPR-33
Facility: Oconee Nuclear Station Unit 1
Descriptive Title: Foreign Material in Reactor Coolant System
Prepared By: [I
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' C. E. Mubphy, Resctor Inspector
Date
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A.
Date and Manner AEC Was Informed:
Mr. J. E. Smith, Superintendent, Oconee Nuclear Station, advised the
inspector of the problem by telecon on March 14, 1972.
B.
Description of Particular Event or Circumstances:
Mr. Smith advised the inspector that on March 13, 1972, a " tinkling"
sound was heard in the top of the A steam generator. At the time, the
plant was at temperature and pressure for hot functional testing.
The plant was cooled down and the steam generator opened. A piece of
pipe approximately 3/4 inch to 1 inch in diameter and 10-inch length
was located. Three other pieces of =aterial, spherical in shape, were
also found. These objects were 1-1/2 inches to 2 inches in diameter.
One was cut open and found to be hollow inside. Smith was of the
opinion that they were also pieces of pipe. A preliminary inspection
of the tube sheet revealed that the ends of the tubes had been bradded.
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The B steam generator was then opened up and it was found that the
thermocouple harness to be used in performance testing had been torn
loose. The extent of damage in this generator has not been determined .
as yet.
Smith stated that the reactor vessel is being opened a d the internals
removed to determine if there is foreign material in the vessel and if
damage has occurred here.
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CO Inquiry Rpt. No.
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50-269/72-4
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C.
Action By Licensee:
The licensee's engineers and B&W engineers are enroute to the site to
make a full investigation and evaluation. Very preliminary estimates
indicate that a two-to-three week delay is involved.
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