FR3044156B1 - PASSIVE TRIP SECURITY DEVICE FOR NUCLEAR REACTOR ON ABNORMAL PRIMARY RATE DROP - Google Patents

PASSIVE TRIP SECURITY DEVICE FOR NUCLEAR REACTOR ON ABNORMAL PRIMARY RATE DROP

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Publication number
FR3044156B1
FR3044156B1 FR1561276A FR1561276A FR3044156B1 FR 3044156 B1 FR3044156 B1 FR 3044156B1 FR 1561276 A FR1561276 A FR 1561276A FR 1561276 A FR1561276 A FR 1561276A FR 3044156 B1 FR3044156 B1 FR 3044156B1
Authority
FR
France
Prior art keywords
lift
sheath
nuclear reactor
heat transfer
transfer fluid
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.)
Active
Application number
FR1561276A
Other languages
French (fr)
Other versions
FR3044156A1 (en
Inventor
Denis Lorenzo
Isabelle Guenot-Delahaie
Maxime Zabiego
Virasay Soukphouangkham
Bernard Valentin
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.)
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
Original Assignee
Commissariat a lEnergie Atomique CEA
Commissariat a lEnergie Atomique et aux Energies Alternatives CEA
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 Commissariat a lEnergie Atomique CEA, Commissariat a lEnergie Atomique et aux Energies Alternatives CEA filed Critical Commissariat a lEnergie Atomique CEA
Priority to FR1561276A priority Critical patent/FR3044156B1/en
Priority to CN201611047719.6A priority patent/CN106941014B/en
Priority to KR1020160156909A priority patent/KR20170059913A/en
Priority to JP2016227540A priority patent/JP6948782B2/en
Priority to RU2017101227A priority patent/RU2017101227A/en
Publication of FR3044156A1 publication Critical patent/FR3044156A1/en
Application granted granted Critical
Publication of FR3044156B1 publication Critical patent/FR3044156B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
    • G21C9/02—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency
    • G21C9/027—Means for effecting very rapid reduction of the reactivity factor under fault conditions, e.g. reactor fuse; Control elements having arrangements activated in an emergency by fast movement of a solid, e.g. pebbles
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/18—Emergency cooling arrangements; Removing shut-down heat
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C9/00—Emergency protection arrangements structurally associated with the reactor, e.g. safety valves provided with pressure equalisation devices
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C1/00—Reactor types
    • G21C1/02—Fast fission reactors, i.e. reactors not using a moderator ; Metal cooled reactors; Fast breeders
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C15/00—Cooling arrangements within the pressure vessel containing the core; Selection of specific coolants
    • G21C15/28—Selection of specific coolants ; Additions to the reactor coolants, e.g. against moderator corrosion
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/02—Devices or arrangements for monitoring coolant or moderator
    • G21C17/022—Devices or arrangements for monitoring coolant or moderator for monitoring liquid coolants or moderators
    • G21C17/025—Devices or arrangements for monitoring coolant or moderator for monitoring liquid coolants or moderators for monitoring liquid metal coolants
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C7/00—Control of nuclear reaction
    • G21C7/06—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section
    • G21C7/08—Control of nuclear reaction by application of neutron-absorbing material, i.e. material with absorption cross-section very much in excess of reflection cross-section by displacement of solid control elements, e.g. control rods
    • G21C7/10—Construction of control elements
    • G21C7/103—Control assemblies containing one or more absorbants as well as other elements, e.g. fuel or moderator elements
    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21D—NUCLEAR POWER PLANT
    • G21D3/00—Control of nuclear power plant
    • G21D3/04—Safety arrangements
    • G21D3/06—Safety arrangements responsive to faults within the plant
    • 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

Abstract

La présente invention concerne un dispositif de sûreté à déclenchement passif pour réacteur nucléaire, le dispositif comprenant un assemblage comprenant : • un fourreau (200) destiné à être traversé longitudinalement par un fluide caloporteur ; • un équipage mobile (100), monté mobile en translation selon la direction longitudinale (3) dans le fourreau (200) et comprenant au moins une portion neutrophage ; l'équipage mobile (100) comprend une première portion de portance (110) et le fourreau (200) comprend une deuxième portion de portance (210), les première et deuxième portions de portance (110, 210) étant conformées de manière à ce que lorsque les première et deuxième portions de portance (110, 210) sont disposées en regard et que le débit Qf du fluide caloporteur traversant longitudinalement le fourreau (200) est supérieur à un débit Qdécienchement, alors le fluide caloporteur exerce sur l'équipage mobile (100) une force suffisante pour assurer la portance de l'équipage mobile dans le fourreau (200) et son maintien en configuration de portance et caractérisé en ce que la première (110) ou la deuxième (210) portion de portance forme un organe (112, 211) qui définit en partie au moins un amortisseur visqueux pour freiner la chute de l'équipage mobile 100 lors de sa chute.The present invention relates to a passive tripping safety device for a nuclear reactor, the device comprising an assembly comprising: • a sheath (200) intended to be traversed longitudinally by a heat transfer fluid; • a mobile unit (100), mounted mobile in translation in the longitudinal direction (3) in the sheath (200) and comprising at least one neutron absorbing portion; the mobile unit (100) comprises a first lift portion (110) and the sheath (200) comprises a second lift portion (210), the first and second lift portions (110, 210) being shaped so as to that when the first and second lift portions (110, 210) are arranged facing each other and the flow rate Qf of the heat transfer fluid passing longitudinally through the sheath (200) is greater than a flow rate Qécienquement, then the heat transfer fluid exerts on the mobile unit (100) sufficient force to ensure the lift of the movable assembly in the sheath (200) and its maintenance in the lift configuration and characterized in that the first (110) or the second (210) lift portion forms a member (112, 211) which partly defines at least one viscous damper to slow down the fall of the mobile equipment 100 during its fall.

FR1561276A 2015-11-23 2015-11-23 PASSIVE TRIP SECURITY DEVICE FOR NUCLEAR REACTOR ON ABNORMAL PRIMARY RATE DROP Active FR3044156B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
FR1561276A FR3044156B1 (en) 2015-11-23 2015-11-23 PASSIVE TRIP SECURITY DEVICE FOR NUCLEAR REACTOR ON ABNORMAL PRIMARY RATE DROP
CN201611047719.6A CN106941014B (en) 2015-11-23 2016-11-23 Passive triggering safety device for nuclear reactor equipped with damper
KR1020160156909A KR20170059913A (en) 2015-11-23 2016-11-23 Passive activation safety device for nuclear reactor on abnormal dropping in primary flow with a damper
JP2016227540A JP6948782B2 (en) 2015-11-23 2016-11-24 Passive start safety device for nuclear reactors based on abnormal decrease in primary flow rate
RU2017101227A RU2017101227A (en) 2015-11-23 2017-01-16 PROTECTIVE DEVICE FOR PASSIVE OPERATION FOR A NUCLEAR REACTOR WITH AN ABNORMAL REDUCTION OF THE PRIMARY COSTS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1561276A FR3044156B1 (en) 2015-11-23 2015-11-23 PASSIVE TRIP SECURITY DEVICE FOR NUCLEAR REACTOR ON ABNORMAL PRIMARY RATE DROP

Publications (2)

Publication Number Publication Date
FR3044156A1 FR3044156A1 (en) 2017-05-26
FR3044156B1 true FR3044156B1 (en) 2017-11-10

Family

ID=55486791

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1561276A Active FR3044156B1 (en) 2015-11-23 2015-11-23 PASSIVE TRIP SECURITY DEVICE FOR NUCLEAR REACTOR ON ABNORMAL PRIMARY RATE DROP

Country Status (5)

Country Link
JP (1) JP6948782B2 (en)
KR (1) KR20170059913A (en)
CN (1) CN106941014B (en)
FR (1) FR3044156B1 (en)
RU (1) RU2017101227A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3085531B1 (en) 2018-09-05 2020-10-30 Commissariat Energie Atomique WATERPROOF STRUCTURE FOR ASSEMBLY FOR CONTROL OF THE REACTIVITY OF A QUICK NEUTRON NUCLEAR REACTOR
KR102600988B1 (en) * 2022-03-28 2023-11-10 한국과학기술원 Passive safety apparatus and nuclear fuel assembly

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2118852B1 (en) * 1970-12-22 1973-11-30 Commissariat Energie Atomique
US3959072A (en) * 1973-09-27 1976-05-25 Combustion Engineering, Inc. Compactable control element assembly for a nuclear reactor
FR2353929A1 (en) * 1976-05-31 1977-12-30 Alsacienne Atom INTRINSIC SAFETY DEVICE APPLICABLE TO THE CORE OF A LIQUID REFRIGERANT NUCLEAR REACTOR
US4313794A (en) * 1979-02-15 1982-02-02 Rockwell International Corporation Self-actuating and locking control for nuclear reactor
FR2503918B1 (en) * 1981-04-09 1987-09-04 Commissariat Energie Atomique ABSORBENT BAR FOR NUCLEAR REACTOR
JPS61118693A (en) * 1984-11-15 1986-06-05 石川島播磨重工業株式会社 Method of driving control rod in nuclear reactor
JP2003270375A (en) * 2002-03-13 2003-09-25 Japan Atom Energy Res Inst Passive reactor shutdown mechanism
CN1182541C (en) * 2002-11-14 2004-12-29 清华大学 Reactor control-rod driving mechanism with adjustable magnetic damper
FR2964237B1 (en) * 2010-08-25 2012-09-28 Commissariat Energie Atomique DEVICE FOR MITIGATION OF SERIOUS ACCIDENTS FOR ASSEMBLY OF NUCLEAR FUEL WITH IMPROVED EFFICIENCY
FR2983624B1 (en) * 2011-12-02 2014-02-07 Commissariat Energie Atomique NUCLEAR REACTOR ASSEMBLY HAVING NUCLEAR FUEL AND A SYSTEM FOR TRIGGERING AND INSERTING AT LEAST ONE NEUTRONIC ABSORBING ELEMENT AND / OR MITIGATOR
US9406406B2 (en) * 2011-12-12 2016-08-02 Bwxt Nuclear Energy, Inc. Control rod with outer hafnium skin
US20130272466A1 (en) * 2012-04-17 2013-10-17 Michael J. Edwards CRDM Divert Valve

Also Published As

Publication number Publication date
CN106941014A (en) 2017-07-11
RU2017101227A (en) 2018-07-17
CN106941014B (en) 2021-11-02
KR20170059913A (en) 2017-05-31
JP6948782B2 (en) 2021-10-13
JP2017096954A (en) 2017-06-01
FR3044156A1 (en) 2017-05-26

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