ML19224A871
| ML19224A871 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/29/1979 |
| From: | Chiramal M Office of Nuclear Reactor Regulation |
| To: | Tondi D Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 7906070157 | |
| Download: ML19224A871 (1) | |
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UNITED STATES 8 ",.c ( Ii NUCLEAR REGULATORY COMMISSION WASHING TON, D. C. 20555
%w f MAY 2 91979 NOTE T0:
D. Tondi, Section Leader, Plant Systems Branch, Division of Operating Reactors FROM:
M. Chiramal, Plant Systems Branch, Division of Operating Reactors
SUBJECT:
CONTINUOUS MONITORING AT TMI-2 The TMI-2 uni t,as it is cooling down,contains a plethora of information that should be extracted.
There are several Electric, Instrumentation and Control equipment that are located inside the containment and ex-posed to abnormal environments.
Efforts must be made now to monitor some of this equipment to measure the effect of the environment on the equipment.
For example, cable, motors and MOV's inside the containment can be monitored for IR degradation, leakage current increases, PF change etc.; instruments can be monitored for noise analysis and other means of measuring degradation (as was done during the first few days following the accident); penetrations can be monitored for degradation of electrical properties, increased leakage, etc.
The point is, we should be continuously (to the extent possible) monitoring representative samples of all El&C equipment inside containment to see the effect of the environment with time. This data would be invaluable in the equipment qualification effort for operating reactors.
If possible similar suggestions should be invited from other PSB Section A members regarding TMI-2 El&C systems and forwarded to the appropriate personnel.
M. Chir'amal, Plant Systems Branch Division of Operating Reactors cc:
G. Lainas E. Butcher M. Chiramal 169 068 7 906 0 70 lf7 i