FR2242747A2 - Nuclear reactor core passive protection system - esp for fast neutron reactor based on fall under gravity of fuel melted by local overheating - Google Patents

Nuclear reactor core passive protection system - esp for fast neutron reactor based on fall under gravity of fuel melted by local overheating

Info

Publication number
FR2242747A2
FR2242747A2 FR7331540A FR7331540A FR2242747A2 FR 2242747 A2 FR2242747 A2 FR 2242747A2 FR 7331540 A FR7331540 A FR 7331540A FR 7331540 A FR7331540 A FR 7331540A FR 2242747 A2 FR2242747 A2 FR 2242747A2
Authority
FR
France
Prior art keywords
fuel
local overheating
esp
protection system
refractory
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.)
Granted
Application number
FR7331540A
Other languages
French (fr)
Other versions
FR2242747B2 (en
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.)
Electricite de France SA
Original Assignee
Electricite de France SA
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 Electricite de France SA filed Critical Electricite de France SA
Priority to FR7331540A priority Critical patent/FR2242747A2/en
Priority to GB5519473A priority patent/GB1446086A/en
Priority to US05/420,363 priority patent/US3932217A/en
Priority to IT70617/73A priority patent/IT999934B/en
Priority to JP48141434A priority patent/JPS582398B2/en
Priority to DE19732363571 priority patent/DE2363571C3/en
Publication of FR2242747A2 publication Critical patent/FR2242747A2/en
Application granted granted Critical
Publication of FR2242747B2 publication Critical patent/FR2242747B2/fr
Granted legal-status Critical Current

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
    • 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

At the bottom of each of a number of separate safety rods which are substituted in the core for normal fuel rods, is a crucible section of refractory material above which is an expansion chamber for fission product gasses with at its top a ring diaphragm supporting a plug, with small central bore, of refractory material. This in turn suports a refractory hollow cylinder with relatively large bore on which in turn are stacked hollow cylindrical pellets of fuel material lining the sheath of the element. Fuel melted by local overheating due to excess neutron flux flows down into the refractory sections reducing reactivity thereby in the overheated mid-section.
FR7331540A 1972-12-20 1973-08-31 Nuclear reactor core passive protection system - esp for fast neutron reactor based on fall under gravity of fuel melted by local overheating Granted FR2242747A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
FR7331540A FR2242747A2 (en) 1973-08-31 1973-08-31 Nuclear reactor core passive protection system - esp for fast neutron reactor based on fall under gravity of fuel melted by local overheating
GB5519473A GB1446086A (en) 1972-12-20 1973-11-28 Method for the passive protection of a nuclear reactor
US05/420,363 US3932217A (en) 1972-12-20 1973-11-30 Method and device for the passive protection of a nuclear reactor
IT70617/73A IT999934B (en) 1972-12-20 1973-12-07 PROCEDURE AND PASSIVE PROTECTION DEVICE OF A NU CLEARE REACTOR
JP48141434A JPS582398B2 (en) 1972-12-20 1973-12-19 Passive protection devices for nuclear reactors
DE19732363571 DE2363571C3 (en) 1972-12-20 1973-12-20 Device for passive protection of a nuclear reactor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7331540A FR2242747A2 (en) 1973-08-31 1973-08-31 Nuclear reactor core passive protection system - esp for fast neutron reactor based on fall under gravity of fuel melted by local overheating

Publications (2)

Publication Number Publication Date
FR2242747A2 true FR2242747A2 (en) 1975-03-28
FR2242747B2 FR2242747B2 (en) 1978-07-07

Family

ID=9124500

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7331540A Granted FR2242747A2 (en) 1972-12-20 1973-08-31 Nuclear reactor core passive protection system - esp for fast neutron reactor based on fall under gravity of fuel melted by local overheating

Country Status (1)

Country Link
FR (1) FR2242747A2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318138A1 (en) * 1982-05-18 1983-11-24 Doryokuro Kakunenryo Kaihatsu Jigyodan, Tokyo Nuclear fuel element

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3318138A1 (en) * 1982-05-18 1983-11-24 Doryokuro Kakunenryo Kaihatsu Jigyodan, Tokyo Nuclear fuel element

Also Published As

Publication number Publication date
FR2242747B2 (en) 1978-07-07

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