ML19305A482
| ML19305A482 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 05/02/1979 |
| From: | Rosenthal J Office of Nuclear Reactor Regulation |
| To: | Disalvo R NRC OFFICE OF NUCLEAR REGULATORY RESEARCH (RES) |
| Shared Package | |
| ML19305A478 | List: |
| References | |
| NUDOCS 7907260466 | |
| Download: ML19305A482 (1) | |
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UNITED STATES I
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NUCLEAR REGULATORY COMMISSION L
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,0-MEMORANDUM FOR:
Dr. Raymond 01 Salvo, Research Program Manager,
.orobabilistic Analysis Staff, Office of Nuclear Regulatory Research Paul S. Check, Chief, Reactor Safety Branch, 00R THRU:
FROM:
Jack E. Rosenthal, Reactor Safety Branch, DOR
SUBJECT:
VESSEL LEVEL INST 1UMENTATION Last night while puzzling over how pressure vessel water level could be monitored, it occurred to me that a simple " organ pipe" could be employed.
Given a tube or possibly a section of the existing upper guide structure, and an installed transducer, one need merely monitor the time or frequency response to an excitation to determine the water level. The advantages of such a system include:
(1) use of existing technology, (2) use of common materials, the transducer would consist of a wire wrapped ceramic, the probe would be a stainless steel tube, or section, (3) the transducer may be used to excite the tube and as the pickup coil, (4) a minimum of penetrations are necessary and they are for wires rather than fluids, (5) the system could be readily designed to be seismic and radiation field tolerant.
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Jack E. Rosenthal Reactor Safety Branch Division of Operating Reactors cc:
V. Stello/D. Eisenhut R. Vollmer S. Levine S. Hanauer M T. Novak R. Satterfield S. Weiss J. Rosenthal l
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