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GB1392952A - Control lock for controlling the passage of persons from one location to another - Google Patents

Control lock for controlling the passage of persons from one location to another

Info

Publication number
GB1392952A
GB1392952A GB3342372A GB3342372A GB1392952A GB 1392952 A GB1392952 A GB 1392952A GB 3342372 A GB3342372 A GB 3342372A GB 3342372 A GB3342372 A GB 3342372A GB 1392952 A GB1392952 A GB 1392952A
Authority
GB
United Kingdom
Prior art keywords
lock
radiation
detector
detectors
neutron
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
GB3342372A
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.)
Alkem GmbH
Original Assignee
Alkem GmbH
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
Priority claimed from DE19702016857 external-priority patent/DE2016857C3/en
Priority claimed from DE19712135578 external-priority patent/DE2135578C3/en
Application filed by Alkem GmbH filed Critical Alkem GmbH
Publication of GB1392952A publication Critical patent/GB1392952A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G21—NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21F—PROTECTION AGAINST X-RADIATION, GAMMA RADIATION, CORPUSCULAR RADIATION OR PARTICLE BOMBARDMENT; TREATING RADIOACTIVELY CONTAMINATED MATERIAL; DECONTAMINATION ARRANGEMENTS THEREFOR
    • G21F7/00—Shielded cells or rooms
    • G21F7/005—Shielded passages through walls; Locks; Transferring devices between rooms
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H1/00—Buildings or groups of buildings for dwelling or office purposes; General layout, e.g. modular co-ordination or staggered storeys
    • E04H1/12—Small buildings or other erections for limited occupation, erected in the open air or arranged in buildings, e.g. kiosks, waiting shelters for bus stops or for filling stations, roofs for railway platforms, watchmen's huts or dressing cubicles
    • E04H1/1277—Shelters for decontamination
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/167—Measuring radioactive content of objects, e.g. contamination

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Molecular Biology (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Radiation (AREA)

Abstract

1392952 Radiation monitors ALKEM GmbH 17 July 1972 [16 July 1971] 33423/72 Heading G1A A control lock through which a person is obliged to go in passing from one location to another is provided with 7- and neutron detectors which are arranged to prevent opening of the exit of the lock if the γ- or neutron radiation within the lock is above respective predetermined levels. As shown, Fig. 1, the inside of the lock 2 is monitored for γ- radiation by means of NaI scintillation counters 7, 8, 9 and for neutron radiation by a BF 3 counter 11. A hand monitoring detector 6 and a foot monitoring detector 10, sensitive to α and # radiation, e.g. a Geiger counter, are also provided as is a metal detector 13 operating by means of high frequency fields or ultrasonic holography. A secondary lock 3 is provided for the passage of metal articles and materials and is provided with a neutron detector 12 and shares one of the 7- detectors 9 with the main lock. The air in the lock may be monitored using an IR absorption spectrograph and weight detectors may also be incorporated. Detection of excess radiation may operate alarms and indicators within the lock and at a control position and prevents the opening of the exit door of the lock. An'identity monitoring device 23 may be provided for allowing entry to the lock and the instrument readings may be recorded together with the identity of the person using the lock. The control unit 4 is said to connect the scintillation counters alternately in series and in opposition, and the reading of an externally located detector 15 is subtracted to compensate for background radiation received by the detectors within the lock. A safety device may be incorporated to open, or at least unlock, both doors of the lock in the event of an emergency such as a fire or a criticallity alarm.
GB3342372A 1970-04-09 1972-07-17 Control lock for controlling the passage of persons from one location to another Expired GB1392952A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19702016857 DE2016857C3 (en) 1970-04-09 1970-04-09 Device for monitoring the movement of people in and out of rooms in which work is carried out with radioactive substances
DE19712135578 DE2135578C3 (en) 1971-07-16 1971-07-16 Device for monitoring the movement of people in and out of rooms in which work is carried out with radioactive substances, with a lock locking device controlled by a device for measuring T activity

Publications (1)

Publication Number Publication Date
GB1392952A true GB1392952A (en) 1975-05-07

Family

ID=25758944

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3342372A Expired GB1392952A (en) 1970-04-09 1972-07-17 Control lock for controlling the passage of persons from one location to another

Country Status (1)

Country Link
GB (1) GB1392952A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003069320A2 (en) * 2001-11-08 2003-08-21 Ranger Security Detectors, Inc. Radiation and metal detection system for scanning objects
FR2911212A1 (en) * 2007-01-10 2008-07-11 Alessandro Manneschi DETECTOR OF PRODUCTS NOT ALLOWED IN A PROTECTED ACCESS ZONE
FR3010191A1 (en) * 2013-09-05 2015-03-06 Commissariat Energie Atomique DEVICE FOR DETECTING ALPHA CONTAMINATION OF OBJECTS

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003069320A2 (en) * 2001-11-08 2003-08-21 Ranger Security Detectors, Inc. Radiation and metal detection system for scanning objects
WO2003069320A3 (en) * 2001-11-08 2003-11-20 Ranger Security Detectors Inc Radiation and metal detection system for scanning objects
FR2911212A1 (en) * 2007-01-10 2008-07-11 Alessandro Manneschi DETECTOR OF PRODUCTS NOT ALLOWED IN A PROTECTED ACCESS ZONE
EP1944624A1 (en) * 2007-01-10 2008-07-16 Alessandro Manneschi Detector of unauthorized products in a protected access area
FR3010191A1 (en) * 2013-09-05 2015-03-06 Commissariat Energie Atomique DEVICE FOR DETECTING ALPHA CONTAMINATION OF OBJECTS

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee