GB926605A - Improvements in or relating to fire-detection apparatus - Google Patents

Improvements in or relating to fire-detection apparatus

Info

Publication number
GB926605A
GB926605A GB10854/61A GB1085461A GB926605A GB 926605 A GB926605 A GB 926605A GB 10854/61 A GB10854/61 A GB 10854/61A GB 1085461 A GB1085461 A GB 1085461A GB 926605 A GB926605 A GB 926605A
Authority
GB
United Kingdom
Prior art keywords
ions
electrodes
gas
pairs
pair
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
GB10854/61A
Inventor
Denys Victor Booker
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.)
UK Atomic Energy Authority
Original Assignee
UK Atomic Energy Authority
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 UK Atomic Energy Authority filed Critical UK Atomic Energy Authority
Priority to GB10854/61A priority Critical patent/GB926605A/en
Priority to FR892106A priority patent/FR1318255A/en
Publication of GB926605A publication Critical patent/GB926605A/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62C—FIRE-FIGHTING
    • A62C99/00—Subject matter not provided for in other groups of this subclass
    • A62C99/0009—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames
    • A62C99/0018—Methods of extinguishing or preventing the spread of fire by cooling down or suffocating the flames using gases or vapours that do not support combustion, e.g. steam, carbon dioxide
    • A62C99/0027—Carbon dioxide extinguishers
    • 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
    • G21C9/04—Means for suppressing fires ; Earthquake protection
    • 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

  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • 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)
  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Fire-Detection Mechanisms (AREA)

Abstract

926,605. Reactors. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. March 19, 1962 [March 24, 1961], No. 10854/61. Class 39 (4). [Also in Group XXXVI] Fire detection apparatus in a gas-cooled nuclear reactor comprises two pairs of spaced electrodes between which a gas is arranged to pass, means for applying between one pair of electrodes an electric field sufficient to collect both " large " ions (i.e. Charged condensation nuclei) and " small " ions (i.e. those produced by ionizing radiations), and between the other pair an electric field sufficiently low to collect only " small " ions, the two currents from the pairs of electrodes being subtracted to give a current substantially dependent only on the number of " large " ions in the gas. The electrodes may be arranged as pairs of concentric cylinders, or as three concentric cylinders through which the gas passes, first through the inner space then through the outer or through both in parallel. Suitable electrode potentials are 20 volts and 1000 volts. A common connection may be taken from one electrode of each pair to a vibrating reed electrometer.
GB10854/61A 1961-03-24 1961-03-24 Improvements in or relating to fire-detection apparatus Expired GB926605A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB10854/61A GB926605A (en) 1961-03-24 1961-03-24 Improvements in or relating to fire-detection apparatus
FR892106A FR1318255A (en) 1961-03-24 1962-03-23 Fire detector device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB10854/61A GB926605A (en) 1961-03-24 1961-03-24 Improvements in or relating to fire-detection apparatus

Publications (1)

Publication Number Publication Date
GB926605A true GB926605A (en) 1963-05-22

Family

ID=9975547

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10854/61A Expired GB926605A (en) 1961-03-24 1961-03-24 Improvements in or relating to fire-detection apparatus

Country Status (1)

Country Link
GB (1) GB926605A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5527957A (en) * 1991-03-07 1996-06-18 Imperial Chemical Industries Plc Process for the production of terephthalic acid
US6900432B1 (en) 1999-01-28 2005-05-31 The Secretary Of State For Defence Fire detection method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5527957A (en) * 1991-03-07 1996-06-18 Imperial Chemical Industries Plc Process for the production of terephthalic acid
US6900432B1 (en) 1999-01-28 2005-05-31 The Secretary Of State For Defence Fire detection method

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