You need JavaScript to view this

In core monitor having multi-step seals

Abstract

A method to completely prevent a sensor gas sealed in a pipe from leaking in an in-core neutron detector for use with a BWR type reactor is described. In an in core monitor fabricated by disposing inner and outer electrodes in a housing, forming a layer of neutron conversion material on the outer electrode, filling an ionizing gas within the space between the layer and the inner electrode and, thereafter, attaching an insulation cable and an exhaust pipe respectively by way of insulators to both ends of the housing, the exhaust pipe is sealed in two-steps through pressure bonding using a multi-stepped pincher tool having two pressure bonding bits of a step shape and the outer sealing portion is further welded. The sensor gas sealed in the pipe can thus be prevented from leaking upon pressure bonding and welding.
Authors:
Publication Date:
Dec 09, 1976
Product Type:
Patent
Report Number:
JP 1978-72990; A
Reference Number:
AIX-10-455920; EDB-79-110768
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BWR TYPE REACTORS; IN CORE INSTRUMENTS; NEUTRON DETECTORS; SEALS; FABRICATION; GASES; LEAKS; PIPE FITTINGS; PIPES; SHAPE; CONFIGURATION; FLUIDS; MEASURING INSTRUMENTS; RADIATION DETECTORS; REACTOR INSTRUMENTATION; REACTORS; WATER COOLED REACTORS; WATER MODERATED REACTORS; 210100* - Power Reactors, Nonbreeding, Light-Water Moderated, Boiling Water Cooled
OSTI ID:
6076462
Country of Origin:
Japan
Language:
Japanese
Submitting Site:
INIS
Size:
Pages: 3
Announcement Date:

Citation Formats

Kasai, M, and Ono, S. In core monitor having multi-step seals. Japan: N. p., 1976. Web.
Kasai, M, & Ono, S. In core monitor having multi-step seals. Japan.
Kasai, M, and Ono, S. 1976. "In core monitor having multi-step seals." Japan.
@misc{etde_6076462,
title = {In core monitor having multi-step seals}
author = {Kasai, M, and Ono, S}
abstractNote = {A method to completely prevent a sensor gas sealed in a pipe from leaking in an in-core neutron detector for use with a BWR type reactor is described. In an in core monitor fabricated by disposing inner and outer electrodes in a housing, forming a layer of neutron conversion material on the outer electrode, filling an ionizing gas within the space between the layer and the inner electrode and, thereafter, attaching an insulation cable and an exhaust pipe respectively by way of insulators to both ends of the housing, the exhaust pipe is sealed in two-steps through pressure bonding using a multi-stepped pincher tool having two pressure bonding bits of a step shape and the outer sealing portion is further welded. The sensor gas sealed in the pipe can thus be prevented from leaking upon pressure bonding and welding.}
place = {Japan}
year = {1976}
month = {Dec}
}