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- Trapped_key_interlocking abstract "Trapped key interlocking utilizes locks and keys for sequential control of equipment and machinery to ensure safe operation. Trapped key interlocks are widely used to ensure safe access to potentially live or dangerous plant or equipment in an industrial setting. A safe sequence of operations is enabled through transfer of keys that are either trapped or released in a predetermined order. For example, a key is used to isolate a power source (circuit breaker or supply valve), this key is then released and can then be used to gain access through a gate or door to a high risk area by inserting it into an access lock. The key will then remain trapped until the gate or door is closed. A personnel or safety key can be released from the access lock, this ensures that the gate or door can not be closed and the initial key released until this personnel or safety key is returned. This provides increased operator safety.Trapped key interlocks were used in the French railway system in the 1890s to control track switching operations. Both the Englishman James Harry Castell (1880-1953) and the American R. L. Kirk developed trapped key interlocking systems, and such systems are often referred to as \"Castell\" or \"Kirk\" key interlock systems. Both worked in the power generation and distribution industries in the early part of the 20th Century, and both pioneered the use of trapped key interlock for switchgear control. Trapped key interlocks can be found in many industrial settings including electrical utilities, railway, petroleum, and chemical plants as a response to occupational safety and health legislation.".
- Trapped_key_interlocking thumbnail Trapped_key_interlock_switchgear_door.JPG?width=300.
- Trapped_key_interlocking wikiPageID "23755121".
- Trapped_key_interlocking wikiPageLength "7009".
- Trapped_key_interlocking wikiPageOutDegree "12".
- Trapped_key_interlocking wikiPageRevisionID "697166867".
- Trapped_key_interlocking wikiPageWikiLink Category:Safety_engineering.
- Trapped_key_interlocking wikiPageWikiLink Electricity_generation.
- Trapped_key_interlocking wikiPageWikiLink Interlock_(engineering).
- Trapped_key_interlocking wikiPageWikiLink Investment.
- Trapped_key_interlocking wikiPageWikiLink Key_(lock).
- Trapped_key_interlocking wikiPageWikiLink Kiln.
- Trapped_key_interlocking wikiPageWikiLink Lock_(security_device).
- Trapped_key_interlocking wikiPageWikiLink Occupational_safety_and_health.
- Trapped_key_interlocking wikiPageWikiLink Poka-yoke.
- Trapped_key_interlocking wikiPageWikiLink Rail_transport_in_France.
- Trapped_key_interlocking wikiPageWikiLink File:Trapped_key_interlock_switchgear_door.JPG.
- Trapped_key_interlocking wikiPageWikiLink File:Trapped_key_interlock_transfer_block.JPG.
- Trapped_key_interlocking wikiPageWikiLinkText "Trapped key interlocking".
- Trapped_key_interlocking wikiPageWikiLinkText "trapped key interlock".
- Trapped_key_interlocking wikiPageWikiLinkText "trapped key interlocking".
- Trapped_key_interlocking wikiPageWikiLinkText "trapped-key access".
- Trapped_key_interlocking wikiPageWikiLinkText "trapped-key interlock system".
- Trapped_key_interlocking wikiPageUsesTemplate Template:Refimprove.
- Trapped_key_interlocking wikiPageUsesTemplate Template:Reflist.
- Trapped_key_interlocking subject Category:Safety_engineering.
- Trapped_key_interlocking comment "Trapped key interlocking utilizes locks and keys for sequential control of equipment and machinery to ensure safe operation. Trapped key interlocks are widely used to ensure safe access to potentially live or dangerous plant or equipment in an industrial setting. A safe sequence of operations is enabled through transfer of keys that are either trapped or released in a predetermined order.".
- Trapped_key_interlocking label "Trapped key interlocking".
- Trapped_key_interlocking sameAs Q7835640.
- Trapped_key_interlocking sameAs درونبست_در_کلیدزنی.
- Trapped_key_interlocking sameAs m.06zq2l2.
- Trapped_key_interlocking sameAs Q7835640.
- Trapped_key_interlocking wasDerivedFrom Trapped_key_interlocking?oldid=697166867.
- Trapped_key_interlocking depiction Trapped_key_interlock_switchgear_door.JPG.
- Trapped_key_interlocking isPrimaryTopicOf Trapped_key_interlocking.