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Title: Float level switch for a nuclear power plant containment vessel

Abstract

This invention is a float level switch used to sense rise or drop in water level in a containment vessel of a nuclear power plant during a loss of coolant accident. The essential components of the device are a guide tube, a reed switch inside the guide tube, a float containing a magnetic portion that activates a reed switch, and metal-sheathed, ceramic-insulated conductors connecting the reed switch to a monitoring system outside the containment vessel. Special materials and special sealing techniques prevent failure of components and allow the float level switch to be connected to a monitoring system outside the containment vessel. 1 figures.

Inventors:
Issue Date:
OSTI Identifier:
5311553
Patent Number(s):
5262604 A
Application Number:
PPN: US 7-681030
Assignee:
Dept. of Energy, Washington, DC (United States)
DOE Contract Number:  
AC12-76SN00052
Resource Type:
Patent
Resource Relation:
Patent File Date: 5 Apr 1991
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; LEVEL INDICATORS; DESIGN; NUCLEAR POWER PLANTS; REACTOR MONITORING SYSTEMS; CONTAINMENT SYSTEMS; REACTOR INSTRUMENTATION; CONTAINMENT; ENGINEERED SAFETY SYSTEMS; MEASURING INSTRUMENTS; NUCLEAR FACILITIES; POWER PLANTS; THERMAL POWER PLANTS; 220400* - Nuclear Reactor Technology- Control Systems

Citation Formats

Powell, J G. Float level switch for a nuclear power plant containment vessel. United States: N. p., 1993. Web.
Powell, J G. Float level switch for a nuclear power plant containment vessel. United States.
Powell, J G. Tue . "Float level switch for a nuclear power plant containment vessel". United States.
@article{osti_5311553,
title = {Float level switch for a nuclear power plant containment vessel},
author = {Powell, J G},
abstractNote = {This invention is a float level switch used to sense rise or drop in water level in a containment vessel of a nuclear power plant during a loss of coolant accident. The essential components of the device are a guide tube, a reed switch inside the guide tube, a float containing a magnetic portion that activates a reed switch, and metal-sheathed, ceramic-insulated conductors connecting the reed switch to a monitoring system outside the containment vessel. Special materials and special sealing techniques prevent failure of components and allow the float level switch to be connected to a monitoring system outside the containment vessel. 1 figures.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {11}
}