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After-heat removing device in nuclear power plant

Abstract

Purpose: To prevent water hammer in a BWR type reactor or the like by moving water in pipe lines having stagnant portions in an after-heat removing device. Constitution: To a reactor container, is provided a recycling pump which constitutes a closed loop type recycling system in a nuclear power plant together with a pressure vessel and pipe lines. A pump and a heat exchanger are provided outside of the reactor container and they are connected to up- and down-streams of the recycling pump to form an after-heat removing device in the plant. Upon shutdown of the nuclear power plant, since water in the stagnant portion flows to the intake port of the recycling pump and water from the reactor is spontaneously supplemented thereafter to the stagnant portion, neither pressurized water nor heated steam is generated and thus water hammer is prevented.
Authors:
Mizuno, K [1] 
  1. Nippon Atomic Industry Group Co. Ltd., Tokyo
Publication Date:
Jan 14, 1977
Product Type:
Patent
Report Number:
JP 1953-88497; A
Reference Number:
AIX-10-473869; EDB-79-136351
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; AFTER-HEAT REMOVAL; HYDRAULICS; BWR TYPE REACTORS; PIPELINES; PRIMARY COOLANT CIRCUITS; SHOCK WAVES; STEAM; WATER HAMMER; COOLING SYSTEMS; FLUID MECHANICS; MECHANICS; REACTOR COMPONENTS; REACTOR COOLING SYSTEMS; REACTORS; REMOVAL; WATER COOLED REACTORS; WATER MODERATED REACTORS; 210100* - Power Reactors, Nonbreeding, Light-Water Moderated, Boiling Water Cooled
OSTI ID:
6022708
Country of Origin:
Japan
Language:
Japanese
Submitting Site:
INIS
Size:
Pages: 5
Announcement Date:

Citation Formats

Mizuno, K. After-heat removing device in nuclear power plant. Japan: N. p., 1977. Web.
Mizuno, K. After-heat removing device in nuclear power plant. Japan.
Mizuno, K. 1977. "After-heat removing device in nuclear power plant." Japan.
@misc{etde_6022708,
title = {After-heat removing device in nuclear power plant}
author = {Mizuno, K}
abstractNote = {Purpose: To prevent water hammer in a BWR type reactor or the like by moving water in pipe lines having stagnant portions in an after-heat removing device. Constitution: To a reactor container, is provided a recycling pump which constitutes a closed loop type recycling system in a nuclear power plant together with a pressure vessel and pipe lines. A pump and a heat exchanger are provided outside of the reactor container and they are connected to up- and down-streams of the recycling pump to form an after-heat removing device in the plant. Upon shutdown of the nuclear power plant, since water in the stagnant portion flows to the intake port of the recycling pump and water from the reactor is spontaneously supplemented thereafter to the stagnant portion, neither pressurized water nor heated steam is generated and thus water hammer is prevented.}
place = {Japan}
year = {1977}
month = {Jan}
}