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Osha Minimum Approach Distance Chart

Osha Minimum Approach Distance Chart - The safe work practices required to ensure mad distances are maintained. Required encroachment prevention precautions— see osha 1408(b) you must do all of the following: Web osha table a minimum approach distances* *used only after aps has clarified specific voltage. Over 15 kv, not over 37 kv: Allen smith, manager, safety date published/rev. Web this web page explains the requirements for equipment operations near power lines up to 350 kv in construction. The following table provides minimum approach distances grouped by nominal voltages. Web if employees will be working at elevations greater than 900 meters (3,000 feet) above mean sea level, the employer shall determine minimum approach distances by multiplying the distances in this table by the correction factor in table r. Web for example, if the conductors are energized at 13.2 kv phase to phase, the minimum approach distance is 2 feet 3 inches and the worker’s arm reach is 3 feet, the worker must position their body 5 feet 3 inches from the energized conductor or device until they have donned rated rubber gloves. Web with this requirement, each qualified worker should determine the shock hazard by identifying the exposure to electrical parts, the nominal voltage of those parts, and shock ppe required for adequate protection within the determined minimum approach (or nfpa 70e restricted approach) boundary.

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Minimum Approach Distance Chart

The Following Table Provides Minimum Approach Distances Grouped By Nominal Voltages.

It includes a table of minimum approach distances based on voltage and a range of options to prevent encroachment and electrocution. Switching surge analysis to determine the maximum anticipated Web the arc flash boundary is the minimum safe distance from the energized equipment that an unqualified worker can approach without wearing ppe. Over 750v not over 2 kv:

See Equations, Tables, And References From 29 Cfr 1926.960 And 29 Cfr 1910.269.

Best practice is to keep any unqualified person 10’ or more away from the hazard. Altitude correction factor for minimum approach distances. Over 2 kv, not over 15 kv: Osha 29 cfr 1910.269 3.2.

Web This Web Page Explains The Requirements For Equipment Operations Near Power Lines Up To 350 Kv In Construction.

Please see the chart below to determine these distances for the above identified voltages and greater: Web osha refers to mad as “the closest distance a qualified employee may approach an energized conductor or object.” osha mad requirements in 2014, osha updated the 29 cfr 1910.269 and 1926 subpart v standards with requirements for all employers to establish mads. Osha 29 cfr 1926 subpart v 3.3. Voltage range (phase to phase, rms) approach distance (inches) 300 v and less (1) over 300v, not over 750v:

Web Osha Table A Minimum Approach Distances* *Used Only After Aps Has Clarified Specific Voltage.

Over 15 kv, not over 37 kv: Table 3 — mad chart for utility line clearance. Over 87.5 kv, not over. Table 2 — mad chart for incidental line clearance.

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