ML19259C837
| ML19259C837 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 07/02/1979 |
| From: | Chiramal M Office of Nuclear Reactor Regulation |
| To: | Lainas G Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML19259C838 | List: |
| References | |
| NUDOCS 7908150608 | |
| Download: ML19259C837 (2) | |
Text
,
og NOTE T0:
G. Lainas, Chief, Plant Systems Branch, DOR FROM:
M. Chiramal, Plant Systems Branch, DOR
SUBJECT:
INVESTIGATION OF EQUIPMENT IN TMI-2 CONTAINMENT RE:
R. H. Vollmer's Memo Dated June 14,1979 on "TMI-2 Containment Information" All electrical, instrumentation and control equipment, Class IE and non-Class IE, should be considered as likely candidates for this effort.
(Examples of equipment: cables, splices, terminal blocks, penetratiors, conduits, RCP motors, fan motors, sump pump motors, MOV's, solenoids, transmitters, radiation monitors, RTD's, TC's, and nuclear instrumen-tation).
The effort could include the following items:
1.
Establish exact location of the equipment (perferably on "as built" drawings).
Also, establish water level in containment with respect to the various equipment.
2.
Measure radiation, temperature, humidity and other environmental parameters at the equipment at time of entry.
(Items 1 and 2 above along with the data o6tained during the post accident period should establish the approximate environ-mental history of an equipment).
3.
Visually inspect all equipment (photographs would also help).
4.
Measure all possible characteristics of the equipmot and associated circuitry (e.g., voltage, current-if operating, insulation resistance, leakage current, power factors, specific inductive capacitance, resistance).
Perform calibration check and functional check cf instrumentation where possible.
Compare this data with earlier data of same equipment or of similar equipment.
5.
Inspect interrals of all equipment.
6.
For equipment that has failed, establish area of failure (e.g., for a transmitter either it is a failure in the cable or in the trans-mitter itself) and modes of failure.
7.
For equipment that have or may have suffered some degradation (e.g.,
MOV's, SV's, motors, etc.), take measurements, a; in item 4 above, at various sections of the circuit to which the equipment is connected.
(For example, for a MOV take measurement of the cable section between penetration and motor terminal, and then at the motor itself.)
This should establish where degradation is concentrated.
" QUO 7 90815cGoa
8.
Obtain samples of all equipment for analyses and detailed study (perhaps by Sandia as part of the equipment qualification program).
M. Chiramal Plant Systems Branch Division of Operating Reactors L56301