JPS643594A - Emergency reactor core cooler - Google Patents

Emergency reactor core cooler

Info

Publication number
JPS643594A
JPS643594A JP62157714A JP15771487A JPS643594A JP S643594 A JPS643594 A JP S643594A JP 62157714 A JP62157714 A JP 62157714A JP 15771487 A JP15771487 A JP 15771487A JP S643594 A JPS643594 A JP S643594A
Authority
JP
Japan
Prior art keywords
value
computing element
signal
time
pile
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62157714A
Other languages
Japanese (ja)
Inventor
Hiroaki Suzuki
Michio Murase
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP62157714A priority Critical patent/JPS643594A/en
Publication of JPS643594A publication Critical patent/JPS643594A/en
Pending legal-status Critical Current

Links

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00—Energy generation of nuclear origin
    • Y02E30/30—Nuclear fission reactors

Landscapes

  • Structure Of Emergency Protection For Nuclear Reactors (AREA)

Abstract

PURPOSE:To lower an in-pile pressure when an in-pile water level lowers at the time of a loss of coolant accident and to enable the limitation of the water spray flow rate of an accumulation water spray system by setting the flow passage area of an automatic decompressurization system larger than the value satisfying the equation. CONSTITUTION:With this detector, a scram signal is sent from a computing element 33 to a computing element 50 and a computing element 51 when the in-pile water level lowers below the scram water level at the time of the loss of coolant accident by a rupture of a piping, etc. The computing element 50 receives the signal of a pressure gage 31 and normally sends an extremely large value (for example, 9999) at specified time intervals (for example, 0.1sec) to a controller 52. However, the computing element 51 outputs the value of the time DELTAtL before the in-pile water 1 lowers to LRL to the controller 2 upon receipt of the scram signal. The product of the value of DELTAtS and the value of DELTAtL is calculated in the controller 52 and a signal to open ADS is sent to a valve operator 37 to open the ADS without a time delay when the product decreases smaller than a certain set value.
JP62157714A 1987-06-26 1987-06-26 Emergency reactor core cooler Pending JPS643594A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62157714A JPS643594A (en) 1987-06-26 1987-06-26 Emergency reactor core cooler

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62157714A JPS643594A (en) 1987-06-26 1987-06-26 Emergency reactor core cooler

Publications (1)

Publication Number Publication Date
JPS643594A true JPS643594A (en) 1989-01-09

Family

ID=15655771

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62157714A Pending JPS643594A (en) 1987-06-26 1987-06-26 Emergency reactor core cooler

Country Status (1)

Country Link
JP (1) JPS643594A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04191327A (en) * 1990-11-27 1992-07-09 Toyota Motor Corp Manufacture of cast crank shaft
JP2014055951A (en) * 2012-09-13 2014-03-27 Ge-Hitachi Nuclear Energy Americas Llc Method and system for alternate rpv energy removal path
CN105244062A (en) * 2014-07-09 2016-01-13 国核华清（北京）核电技术研发中心有限公司 Passive pressure accumulation safety injection system and passive pressure accumulation safety injection method
KR20200091247A (en) * 2019-01-22 2020-07-30 한국원자력연구원 Coolant recirculation system of nuclear power plant

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04191327A (en) * 1990-11-27 1992-07-09 Toyota Motor Corp Manufacture of cast crank shaft
JP2014055951A (en) * 2012-09-13 2014-03-27 Ge-Hitachi Nuclear Energy Americas Llc Method and system for alternate rpv energy removal path
CN105244062A (en) * 2014-07-09 2016-01-13 国核华清（北京）核电技术研发中心有限公司 Passive pressure accumulation safety injection system and passive pressure accumulation safety injection method
CN105244062B (en) * 2014-07-09 2017-07-14 国核华清（北京）核电技术研发中心有限公司 Passive pressure accumulation safety injection system and passive pressure accumulation pacify injecting method
KR20200091247A (en) * 2019-01-22 2020-07-30 한국원자력연구원 Coolant recirculation system of nuclear power plant

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