GB910827A - Improvements in or relating to duct systems - Google Patents

Improvements in or relating to duct systems

Info

Publication number
GB910827A
GB910827A GB1840160A GB1840160A GB910827A GB 910827 A GB910827 A GB 910827A GB 1840160 A GB1840160 A GB 1840160A GB 1840160 A GB1840160 A GB 1840160A GB 910827 A GB910827 A GB 910827A
Authority
GB
United Kingdom
Prior art keywords
pump
duct
pipe
valve
leakage
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
GB1840160A
Inventor
Herbert Chilvers Knights
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 GB1840160A priority Critical patent/GB910827A/en
Publication of GB910827A publication Critical patent/GB910827A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D5/00—Protection or supervision of installations
    • F17D5/02—Preventing, monitoring, or locating loss
    • F17D5/04—Preventing, monitoring, or locating loss by means of a signalling fluid enclosed in a double wall
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2101/00—Uses or applications of pigs or moles
    • F16L2101/30—Inspecting, measuring or testing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L2201/00—Special arrangements for pipe couplings
    • F16L2201/30—Detecting leaks

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Measurement Of Radiation (AREA)

Abstract

910,827. Nuclear reactors. UNITED KING- DOM ATOMIC ENERGY AUTHORITY. April 17, 1961 [May 25, 1960], No. 18401/60. Class 39 (4). [Also in Group XXVIII] A duct system, e.g. that installed in an operating chamber of a CO 2 gas-cooled nuclear reactor installation, comprises a duct confined within a longitudinal radiation-shielding structure and means for detecting leakage of fluid from the duct into the space defined by the outer walls of the duct and the inner walls of the shielding structure. In one embodiment (Fig. 4), a CO 2 carrying duct 35 is confined within a longitudinal shielding structure 36 formed by the under-face of a concrete biological shielding 37 and a thick-walled, U -sectioned cast-iron structure 38. A pipe 39, which penetrates a wall of the structure 38, connects with the inlet side of an evacuating pump 41, the outlet side being connected by a branch pipe 43 to a radio-activity monitor 42. Pump 41 is driven by an electric motor 48 which, under normal conditions, drives it at a slow speed but, should a leakage of CO 2 from the duct 35 occur, the subsequent increase in pressure in the pipe 39 is sensed by a pressure-sensitive pump controller 50 which operates through signal lines 51 connected to the pump motor 48 to increase the speed of the pump 41. The outlet side of the pump 41 normally leads to the atmosphere through pipe 52 and valve 55 but, should radioactive contaminants be present in any leakage of CO 2 removed by the pump 41, the radioactivity monitor 42 emits signals through signal lines 59, 60 which result in opening of a valve 56 and closing of the valve 55. Valve 56 located in a pipe 53 connecting the outlet side of the pump 41 with a scrubbing tower 54 through which a pump 61 circulates Na 2 CO 3 solution. Clean CO 2 gas passes through an outlet 63 to the atmosphere and radio-active contaminants are discharged in sludge form through a drain 64. In an alternative embodiment (not shown), leakage from the duct is detected by means of devices of the infra-red gas analyser type and sensitive to CO 2 gas.
GB1840160A 1960-05-25 1960-05-25 Improvements in or relating to duct systems Expired GB910827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1840160A GB910827A (en) 1960-05-25 1960-05-25 Improvements in or relating to duct systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1840160A GB910827A (en) 1960-05-25 1960-05-25 Improvements in or relating to duct systems

Publications (1)

Publication Number Publication Date
GB910827A true GB910827A (en) 1962-11-21

Family

ID=10111824

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1840160A Expired GB910827A (en) 1960-05-25 1960-05-25 Improvements in or relating to duct systems

Country Status (1)

Country Link
GB (1) GB910827A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1273279B (en) * 1966-07-01 1968-07-18 Clinton Orrin Bunn Method and device for monitoring leaks in underground pipelines surrounded by a jacket pipe
FR2358612A1 (en) * 1976-07-14 1978-02-10 Interatom Duct compensator esp. for liquid metals - has external rigid tube outside part of flexible pipe
US5156190A (en) * 1990-08-29 1992-10-20 Colin R. Staley, III Hydraulic safety hose with fluid removal conduit
CN107795748A (en) * 2017-09-27 2018-03-13 上海煤气第二管线工程有限公司 A kind of conduit ring-shaped space fill process

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1273279B (en) * 1966-07-01 1968-07-18 Clinton Orrin Bunn Method and device for monitoring leaks in underground pipelines surrounded by a jacket pipe
FR2358612A1 (en) * 1976-07-14 1978-02-10 Interatom Duct compensator esp. for liquid metals - has external rigid tube outside part of flexible pipe
US5156190A (en) * 1990-08-29 1992-10-20 Colin R. Staley, III Hydraulic safety hose with fluid removal conduit
CN107795748A (en) * 2017-09-27 2018-03-13 上海煤气第二管线工程有限公司 A kind of conduit ring-shaped space fill process
CN107795748B (en) * 2017-09-27 2019-11-19 上海煤气第二管线工程有限公司 A kind of conduit ring-shaped space fill process

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