GB1084361A - - Google Patents

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Publication number
GB1084361A
GB1084361A GB1084361DA GB1084361A GB 1084361 A GB1084361 A GB 1084361A GB 1084361D A GB1084361D A GB 1084361DA GB 1084361 A GB1084361 A GB 1084361A
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GB
United Kingdom
Prior art keywords
acid
container
containers
helium gas
water
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.)
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Application number
Publication of GB1084361A publication Critical patent/GB1084361A/en
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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
    • G21C9/033—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 an absorbent fluid
    • 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
    • G21C7/22—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 a fluid or fluent neutron-absorbing material, e.g. by adding neutron-absorbing material to the coolant
    • 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

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Structure Of Emergency Protection For Nuclear Reactors (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)

Abstract

1,084,361. Controlling reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Aug. 16, 1965 [Sept. 21, 1964], No. 38485/64. Heading G6C. In a nuclear reactor safety system, under emergency conditions, boric acid is urged into containers within the core. Helium gas within each container is compressed by incoming acid and functions as a shock absorber. The helium gas is displaced from the container, by the acid, into an external pressure vessel through a pre-set orifice until the pressures in the vessel end container balance. The arrangement is applied to a heavy-water moderated reactor having light water neutron shieldtanks. The moderator calandria' tank is penetrated by tubes forming the boric acid containers. (Following shut-down, the system is flushed with demineralized water. This prevents corrosion by lithium Hydroxide formed from the irradiation of B10 in the acid.
GB1084361D Active GB1084361A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2063938A1 (en) * 1969-10-07 1971-07-16 Commissariat Energie Atomique Nuclear reactor safety damping system
US3629059A (en) * 1968-04-05 1971-12-21 Euratom Fluid control and safety rods for nuclear reactors

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3629059A (en) * 1968-04-05 1971-12-21 Euratom Fluid control and safety rods for nuclear reactors
FR2063938A1 (en) * 1969-10-07 1971-07-16 Commissariat Energie Atomique Nuclear reactor safety damping system

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