Tuesday, 16 June 2015

General Electrical Preventive Methods

General Electrical Preventive Methods Points : general electrical preventive methods 1) All voltages should be considered dangerous even though voltage may not be high enough to produce serious shock.
2) All electrical circuits should be treated as live and no work should be carried out on any part of electrical apparatus for circuits unless such parts are:
(a) Dead
(b) Isolated and all practical steps taken to lock off from live conductors.
(c) Efficiently connected to earth at all points of disconnection of supply to such apparatus, or between such points and point of work.
(d) Release for work by issue of release of work permit or other tags.
(e) Any live electrical parts should be positively de-energized when working on or near electrical circuits, equipment, or systems. Circuits and equipment must be considered energized until isolated, locked out and tagged and verified with an appropriate testing device. Where it is possible for the circuits to be energized by another source, or where capacitive be grounded and shorted. Additionally, the following precautions should be observed to improve safety in the plant construction sites.
• Follow IS/IEC established procedures.
• Identify and report to your supervisor potential electrical hazards or unexpected occurrences or incidents (i.e. discharges or arcs when applying grounds to circuits thought to be de-energized). • Anticipate potential electrical problems and hazards.
• Do not rush to finish a job; never bypass approved procedures.
• Plan and analyze for safety during each step of any electrical work.
• Keep accurate records (e.g. system on-line drawings, panel schedules. etc.) for electrical or electronic systems.
• Have significant safety-related work interpedently verified.
• Use properly rated test equipment and verifies its condition and operation before and after use.
• Know applicable emergency producers.

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