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Advances in small zero-leak valves point to better nuclear power-plant reliability

Journal Article:

Abstract

In the selection of small valves less than two inches used for nuclear power plants, sufficient consideration must be given to the reliability to radioactive material, the easy operability, and the significant function, especially zero leak. These valves are classified into bellows and diaphragm seal types which must satisfy zero leak, 4000 cycles life test and good maintainability. Welded bellows, formed bellows, and metal diaphragms are actually used for these requirements. The construction of these types are shown. The requirements and principal specifications for these small valves are explained, and some examples are given. These zero leak valves are installed in reactor coolant loop system, borated water from B. A. system, pressurizer instrument system, containment spray system, high head system and off gas system for PWRS, and main steam line system, diesel generator cooling water system, re-circulation system, clean up water system, etc. for BWRS.
Authors:
Eacott, K B; Kin, J C; Hotta, Y [1] 
  1. Dresser Japan, Ltd.
Publication Date:
Apr 01, 1978
Product Type:
Journal Article
Reference Number:
AIX-10-437920; EDB-79-110750
Resource Relation:
Journal Name: Karyoku Genshiryoku Hatsuden; (Japan); Journal Volume: 29:4
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; BWR TYPE REACTORS; REACTOR COOLING SYSTEMS; PWR TYPE REACTORS; VALVES; RELIABILITY; BELLOWS; FAILURES; LEAKS; MAINTENANCE; PERFORMANCE TESTING; CONTROL EQUIPMENT; COOLING SYSTEMS; EQUIPMENT; FLOW REGULATORS; MECHANICAL STRUCTURES; REACTOR COMPONENTS; REACTORS; TESTING; WATER COOLED REACTORS; WATER MODERATED REACTORS; 210100* - Power Reactors, Nonbreeding, Light-Water Moderated, Boiling Water Cooled; 210200 - Power Reactors, Nonbreeding, Light-Water Moderated, Nonboiling Water Cooled
OSTI ID:
5948677
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Journal ID: CODEN: KGHTA
Submitting Site:
INIS
Size:
Pages: 363-368
Announcement Date:
May 01, 1979

Journal Article:

Citation Formats

Eacott, K B, Kin, J C, and Hotta, Y. Advances in small zero-leak valves point to better nuclear power-plant reliability. Japan: N. p., 1978. Web.
Eacott, K B, Kin, J C, & Hotta, Y. Advances in small zero-leak valves point to better nuclear power-plant reliability. Japan.
Eacott, K B, Kin, J C, and Hotta, Y. 1978. "Advances in small zero-leak valves point to better nuclear power-plant reliability." Japan.
@misc{etde_5948677,
title = {Advances in small zero-leak valves point to better nuclear power-plant reliability}
author = {Eacott, K B, Kin, J C, and Hotta, Y}
abstractNote = {In the selection of small valves less than two inches used for nuclear power plants, sufficient consideration must be given to the reliability to radioactive material, the easy operability, and the significant function, especially zero leak. These valves are classified into bellows and diaphragm seal types which must satisfy zero leak, 4000 cycles life test and good maintainability. Welded bellows, formed bellows, and metal diaphragms are actually used for these requirements. The construction of these types are shown. The requirements and principal specifications for these small valves are explained, and some examples are given. These zero leak valves are installed in reactor coolant loop system, borated water from B. A. system, pressurizer instrument system, containment spray system, high head system and off gas system for PWRS, and main steam line system, diesel generator cooling water system, re-circulation system, clean up water system, etc. for BWRS.}
journal = {Karyoku Genshiryoku Hatsuden; (Japan)}
volume = {29:4}
journal type = {AC}
place = {Japan}
year = {1978}
month = {Apr}
}