FR2053682A5 - Radioactivity warning system - Google Patents

Radioactivity warning system

Info

Publication number
FR2053682A5
FR2053682A5 FR6923973A FR6923973A FR2053682A5 FR 2053682 A5 FR2053682 A5 FR 2053682A5 FR 6923973 A FR6923973 A FR 6923973A FR 6923973 A FR6923973 A FR 6923973A FR 2053682 A5 FR2053682 A5 FR 2053682A5
Authority
FR
France
Prior art keywords
radioactivity
warning system
detector
circuit
cable
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.)
Expired
Application number
FR6923973A
Other languages
French (fr)
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.)
Etat Francais
Original Assignee
Etat Francais
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 Etat Francais filed Critical Etat Francais
Priority to FR6923973A priority Critical patent/FR2053682A5/en
Application granted granted Critical
Publication of FR2053682A5 publication Critical patent/FR2053682A5/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T7/00—Details of radiation-measuring instruments
    • G01T7/12—Provision for actuation of an alarm
    • G01T7/125—Alarm- or controlling circuits using ionisation chambers, proportional counters or Geiger-Mueller tubes, also functioning as UV detectors

Abstract

This system provides a visual and audible signal when the radioactivity reaches a predetermind level. A single G.M. detector tube is connected to the main apparatus at is not >50m away, by a long coaxial cable e.g. T.V. cable of 75 ohms and an internal electrical test system is provided in the circuit, to enable the operator to check the functioning of the apparatus. The input from the detector is integrated and the mean voltage produced applied to threshold circuit which drives the warning device. This method is simpler to use and highly reliable.
FR6923973A 1969-07-15 1969-07-15 Radioactivity warning system Expired FR2053682A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR6923973A FR2053682A5 (en) 1969-07-15 1969-07-15 Radioactivity warning system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR6923973A FR2053682A5 (en) 1969-07-15 1969-07-15 Radioactivity warning system

Publications (1)

Publication Number Publication Date
FR2053682A5 true FR2053682A5 (en) 1971-04-16

Family

ID=9037424

Family Applications (1)

Application Number Title Priority Date Filing Date
FR6923973A Expired FR2053682A5 (en) 1969-07-15 1969-07-15 Radioactivity warning system

Country Status (1)

Country Link
FR (1) FR2053682A5 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109493571A (en) * 2018-10-26 2019-03-19 中国辐射防护研究院 A kind of alarm system based on radiation environmental monitoring data

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109493571A (en) * 2018-10-26 2019-03-19 中国辐射防护研究院 A kind of alarm system based on radiation environmental monitoring data
CN109493571B (en) * 2018-10-26 2022-12-09 中国辐射防护研究院 Alarm system based on radiation environment monitoring data

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Legal Events

Date Code Title Description
ST Notification of lapse