FR2287751A1 - Safety circuit for monitoring nuclear reactor reactivity - is self-checking and triggers alarm if faulty regardless of reactor condition - Google Patents

Safety circuit for monitoring nuclear reactor reactivity - is self-checking and triggers alarm if faulty regardless of reactor condition

Info

Publication number
FR2287751A1
FR2287751A1 FR7528643A FR7528643A FR2287751A1 FR 2287751 A1 FR2287751 A1 FR 2287751A1 FR 7528643 A FR7528643 A FR 7528643A FR 7528643 A FR7528643 A FR 7528643A FR 2287751 A1 FR2287751 A1 FR 2287751A1
Authority
FR
France
Prior art keywords
signal
safety circuit
faulty
self
reactor
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
FR7528643A
Other languages
French (fr)
Other versions
FR2287751B3 (en
Inventor
Werner Taubmann
Wilhelm Bucher
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.)
ABB Training Center GmbH and Co KG
Original Assignee
Hartmann and Braun AG
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 Hartmann and Braun AG filed Critical Hartmann and Braun AG
Publication of FR2287751A1 publication Critical patent/FR2287751A1/en
Application granted granted Critical
Publication of FR2287751B3 publication Critical patent/FR2287751B3/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21C—NUCLEAR REACTORS
    • G21C17/00—Monitoring; Testing ; Maintaining
    • G21C17/10—Structural combination of fuel element, control rod, reactor core, or moderator structure with sensitive instruments, e.g. for measuring radioactivity, strain
    • G21C17/108—Measuring reactor flux
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Monitoring And Testing Of Nuclear Reactors (AREA)
  • Measurement Of Radiation (AREA)

Abstract

A dynamic safety circuit for a nuclear reactor comprises an ionisation chamber as sensor, A D.C. amplifier, an upper limit indicator, and a power switching stage to emit a command or signal when the neutron flux or gamma flux detected by the ionisation chamber exceeds a given value. The H.T. source comprises also a low-amplitude A.C. emitter which superimposes a periodic (square wave) voltage; the periodic monitoring signal is decoupled from the output signal of the D.C. amplifier and is supplied to the upper limit indicator; if this periodic monitoring signal is absent, i.e. if the circuit is faulty, a relay on the output side of the indicator triggers an alarm. Pref. the monitoring signal is decoupled by a high pass filter and shaped by a pulse shaper. The A.C. emitter is pref. supplied from the H.T. source. For a reactor safety circuit, the arrangement is self-monitoring. Whenever the super-imposed, square-wave signal is absent, the alarm is triggered.
FR7528643A 1974-10-09 1975-09-18 Safety circuit for monitoring nuclear reactor reactivity - is self-checking and triggers alarm if faulty regardless of reactor condition Granted FR2287751A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19742448052 DE2448052A1 (en) 1974-10-09 1974-10-09 DYNAMIC SECURITY CHANNEL

Publications (2)

Publication Number Publication Date
FR2287751A1 true FR2287751A1 (en) 1976-05-07
FR2287751B3 FR2287751B3 (en) 1978-05-05

Family

ID=5927858

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7528643A Granted FR2287751A1 (en) 1974-10-09 1975-09-18 Safety circuit for monitoring nuclear reactor reactivity - is self-checking and triggers alarm if faulty regardless of reactor condition

Country Status (3)

Country Link
DE (1) DE2448052A1 (en)
FR (1) FR2287751A1 (en)
IT (1) IT1040116B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147212A2 (en) * 1983-12-30 1985-07-03 Westinghouse Electric Corporation Method for determining the operability of a source range detector

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8312806U1 (en) * 1983-04-30 1984-10-04 O.T. Pumpen GmbH & Co KG, 2059 Büchen OSCILLATING WORKING PUMP

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0147212A2 (en) * 1983-12-30 1985-07-03 Westinghouse Electric Corporation Method for determining the operability of a source range detector
EP0147212A3 (en) * 1983-12-30 1986-09-10 Westinghouse Electric Corporation Method for determining the operability of a source range detector
US4655994A (en) * 1983-12-30 1987-04-07 Westinghouse Electric Corp. Method for determining the operability of a source range detector

Also Published As

Publication number Publication date
IT1040116B (en) 1979-12-20
DE2448052A1 (en) 1976-04-15
FR2287751B3 (en) 1978-05-05

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Legal Events

Date Code Title Description
ST Notification of lapse