GB2072909B - Underground installation protection systems - Google Patents

Underground installation protection systems

Info

Publication number
GB2072909B
GB2072909B GB8009485A GB8009485A GB2072909B GB 2072909 B GB2072909 B GB 2072909B GB 8009485 A GB8009485 A GB 8009485A GB 8009485 A GB8009485 A GB 8009485A GB 2072909 B GB2072909 B GB 2072909B
Authority
GB
United Kingdom
Prior art keywords
protection systems
underground installation
installation protection
underground
systems
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
GB8009485A
Other versions
GB2072909A (en
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.)
Pill G J
Original Assignee
Pill G J
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 Pill G J filed Critical Pill G J
Priority to GB8009485A priority Critical patent/GB2072909B/en
Publication of GB2072909A publication Critical patent/GB2072909A/en
Application granted granted Critical
Publication of GB2072909B publication Critical patent/GB2072909B/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • F16L1/00—Laying or reclaiming pipes; Repairing or joining pipes on or under water
    • F16L1/024—Laying or reclaiming pipes on land, e.g. above the ground
    • F16L1/06—Accessories therefor, e.g. anchors
    • F16L1/11—Accessories therefor, e.g. anchors for the detection or protection of pipes in the ground
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/58—Testing of lines, cables or conductors
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/02—Mechanical actuation of the alarm, e.g. by the breaking of a wire
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/10—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to mechanical injury, e.g. rupture of line, breakage of earth connection
GB8009485A 1980-03-20 1980-03-20 Underground installation protection systems Expired GB2072909B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8009485A GB2072909B (en) 1980-03-20 1980-03-20 Underground installation protection systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8009485A GB2072909B (en) 1980-03-20 1980-03-20 Underground installation protection systems

Publications (2)

Publication Number Publication Date
GB2072909A GB2072909A (en) 1981-10-07
GB2072909B true GB2072909B (en) 1983-11-02

Family

ID=10512253

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8009485A Expired GB2072909B (en) 1980-03-20 1980-03-20 Underground installation protection systems

Country Status (1)

Country Link
GB (1) GB2072909B (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3470119D1 (en) * 1983-02-08 1988-05-05 Fisons Plc Fire prevention and extinguishing assembly
GB2182182B (en) * 1985-04-24 1989-06-28 Sound Special Services Limited Intrusion detecting device
GB2186683A (en) * 1986-02-15 1987-08-19 Pilkington Brothers Plc Optical fibre intrusion detector
EP0237479B1 (en) * 1986-03-06 1990-06-20 Securiton AG Fire alarm installation, especially for a road tunnel
EP0298203B1 (en) * 1987-07-09 1992-09-09 Siemens Aktiengesellschaft Electrical monitoring device for detecting stability impaining damages to pylons

Also Published As

Publication number Publication date
GB2072909A (en) 1981-10-07

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee