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ARC FLASH - Coggle Diagram
ARC FLASH
Elimination of Hazard
REmote RAck IN / Out for Elec Isolation / DeIsolation
6.6KV GSS & MSS
Block Unauthorized Entry
Locked EL Yards GAtes & Substation Doors
WORK De -energized Practice Adopted
REmote Switching
6.6KV GSS
66KV GIS
6.6KVMSS
415 v MSS
Substitution
substitute Opaque insulating barriers by transparent barriers
substitute Local/Manual On/Off switching with Remote switching
Substitute AIS with SF6-GIS at EHV 66KV
Substitute 230V AC corded tools with battery-operated-PE tools
Engineering Controls
IAC panel Design 66KV & 6.6KV :check:
PRV at panel Top in Design
Panel Compartmentalized
IP2X insulating BArriers
Digital High speed PRotection Relays
USe of HV Fuse in all HV Motor Feeders
Generic & specific SAfety Interlocks
MESC as per Intl Stds & Repute Make for test & measuring intruments PLUS PPEs too
REdundent DC N+1 Tripping supply with Batt back up
ARC Flash Engg Calc to identify Energy Levels & risk -guide PPE category to Wear
Administrative control
REstricted Entry
Manpower Authorization -TRg & competency as per Std procedure
PTW system inclJHA & TBT
LOTO & TEST BEfore Touch Practice
Std Procedures O &M SOPs
Periodic Inspection & TESting
EMERGENCY REpsonse
MEdical treatment
First AID
Incident Investigation - Learning > Improve
Fire fighting /supression