ML20086B110
| ML20086B110 | |
| Person / Time | |
|---|---|
| Site: | Robinson  |
| Issue date: | 12/21/1971 |
| From: | Utley E CAROLINA POWER & LIGHT CO. |
| To: | Morris P US ATOMIC ENERGY COMMISSION (AEC) |
| Shared Package | |
| ML20086B087 | List: |
| References | |
| NUDOCS 8311170058 | |
| Download: ML20086B110 (1) | |
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$O-Qff Carolina Power & Light Company
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Italcigh, North Carolina 27602 l'"
,Y December 21, 1971
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Dr. Peter A. Porris
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Division of Reactor Licensing U. S. Atomic Energy Commission b
y Washington, D. C.
20545 H. B. ROBINSON STEAM ELECTRIC PLANT LICENSE DPR-23 FAILURE OF SAMPLE IIEAT EXCHANGER
Dear Dr. Morris:
In accordance with paragraph 6.6.1.C, Technical Specifications, the following abnormal occurrence is reported.
On November 30, 1971 an alarm on the Radiation Monitoring System indicated that a sampic heat exchanger had developed a leak. The pres-surizervaporspacesampleheatexchanger'wasisolatedagdtheactivity in the Component Cooling System stcbilized at 2.45 x 10- pc/ml. The defective heat exchanger was replaced on December 3,1971, returning all sampic heat exchangers to service. There was no release of activity to the environment as the Component Cooling System is a closed system.
This is the third failure of a sample heat exchanger at the H. B. Robinson Plant (August 22, 1971, November 24, 1971 and November 30, 1971).
Westinghouse Electric Corporation has been requested to investigate these repeated failures and to make recommendations to Carolina Power & Light Company as to the adequacy of the design of sampic heat exchangers, i
Yours very truly,
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E. E. Utley C 'f Manager f
Cencration & System Operations NBB:me
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Mr. C. D. Barham I.
Mr. G. P. Beatty Mr. N. B. Bessac y
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