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TM 5-682
TECHNICAL MANUAL
FACILITIES ENGINEERING
ELECTRICAL FACILITIES SAFETY
APPROVED FOR PUBLIC RELEASE: DISTRIBUTION IS UNLIMITED
I
HEADQUARTERS, DEPARTMENT OF THE ARMY
SNOVEMBER1999
REPRODUCTION AUTHORILATION/RESTRICTlONS
This manual has been prepared by or for the Government and, except to the extent
indicated below, is public property and not subject to copyright.
Reprint or republication of this manual should include a credit substantially as
follows: “Department of the Army, TM 5-682, Facilities Engineering, Elect&a1 Fa-
cilities Safety, 8
November 1999.”
*TM
5-682
TECHKICAL MANUAL
NO. 5-682
HEADQUARTERS
DEPARTMENT OF THE ARMY
W-\SHINCTON, DC, 8
Novembrr 1999
APPROVED FOR PUBLIC RELEASE; DISTRIBUTION IS UNLIIMITED
Facilities Engineering
Electrical Facilities Safety
PART 1:
BASIC PRACTICES FOR ELECTRICALSAFETY
CHnmn 1.
FURPOSE AND AFPLlCABlLlTY
CHArmI 2.
CLASSlFlcATlONS AND RESFONS18,LITIES OF
ELECTRKAL WORKERS
Wurker ‘lassifications.~. .. .......... .......... ... .. .. ...........
..................... ........
Rqmnsibiiities of workers .......... .................... .................. ......
..........................
saiety meehngs~...............................................................~......~..........~~....~.~
........
Safety rule vioiallon penalties .................................................................................
CHAPTER 3.
B4SlC PERSONNEL SAFE CVORKiNG PRAmIcES
Basic safe working practices ..................................................................................
F”“damentab of safety.. .......................................................................................
Normaienvironmentalimpac~s..
............................................................................
Hazardous e”YirO”menta, impacts
.. ,~, ,,.,,.,,., ... ............................................. ........
Electric shock hazards .,.,.,., .......................................................................
..........
Electrical work., ..........................................................................
.......................
Dc-mergized line work ........................................................................................
Safety clearance for de-energized iinr work..
..................................... ......................
General rules for de-energized line work..
................................................................
Permanent and temporary ground.. ............................................................ ...........
Cenerai rules on electrical grounding.. ....................................................................
Energized line work .. ., .......................... ,, ............................................................
APPAREL, TOOLS, AND MATERlAL HANDLING
Electrical maintenance support.. ........
...................................................................
Inspection of apparel. to&, and materiais handling equipment.. ..................................
Empioyee protection.. ........................................................... ........ .. ...............
Office s&t), .......... ., ....................... ... ........................................................
Field and shop safety ...........................................................................................
Support safety.. .... . . . . . . ...... . . . ............... ..... . .........................................................
General too, safety.. ........... ............ ... ...................................................
hlateriairh~ndlingsafety.. ........
........................... .................................... .......
Rifiging.. ... ................... .....
~.,.~.~~~. ........... ... ............................ .... .. ~.~,~. ......
Heavi’ lifting cquipmrnt .......................................................................................
i\m~iliits~~~~ ....................... ..................................... .......... ...... .. ......
Live-line tools, electrical safety took and specialty elwtricai tools..
......... ...... ........ ,..~ ..
Care and inspection of live-line (hot-line) t0015.. ........................................................
Rubber protective equipment .................................................................................
Elechicni testing devices. .,
................
,,
............ .....................................................
Insulating oil handling operations ...............
..
~,
.......
............................ .. ,, ..............
EXTERIOR SYSTEMS
OLrrDOOR S”BSTATIONS
Substa.tionwork..
..........
~,~.
............ .. .. ...........................
.......... .... ................
11ar1ty.. ................ .. .. ......................................................................
Workareacontrol................. ................... .................. ........................................
Saietyruleschecklist.. ............. ~,~ ,,., .... .... .... .... .................................................
Testing safety rules ...... ... ......................... ., ............. ............................ ........
Switching safety rules..
............. ...............
...............................................
Fusing safety de5 ................................. ...
.:.
.... ....
,, .,
................. ., ....... ~., .............
Energy-storing protective device safety ru!ez.. ..........................................................
Instrumrnt transiormer safety ruies..
........................ ..... .. ................................
Power transiormer and regulator safety Nk.. ..........................................................
Metalclad switchgear i&y ruies..
....... ............ .................
.............................
Network prutector saiq n&s.. ...... ..... ..... ......................................................
storage battery saiety rules ............... ...... .,,.,, ..................... ..................................
Safety requirements far phasing or connecting oi cirwits..
..
.....
..............................
CHnl-rEn 6.
OVERHEAD LINES AND ASSOCIATED ELECTRICAL COMPONENTS
Aerialiinework..
............................. ................................................. ................
Pole handling operations.. ....................................................................................
Pole installation requirements..
.... .. ................ ..
.............................................
Climbing and working an poles.. ...... ,~. ..........
...........
...........................................
Pole climbing equipment.. ...... .. ....................... .............................................
Pole climbing and work prccauhans ........................................................................
Crossing StT”Ct”reS.. .. .. .... .. ............ .......... ..................................................
Stringing or removing de-energized conductors .........................................................
Energized line work
............. .......... ... ........... ..................... ..............................
street lighting., ................................... ,.,.,,, .... ........................... ........................
Working on or around pie-mounted equipment.. ............. .....................................
Aerial rope use.. ........................... .. .. ................. .. .......................................
Too, use .............................................................................................................
Artid lifts and insulated buckets ...........................................................................
Aerial cable heating material requiremenrs..
.........
...................................................
Tree trimming and brush remwai ......................
6-1
6-1
6-2
6-1
6-3
6-3
6-4
6-5
6-5
6-6
6-6
6-8
6-7
6-9
6-8
6-9
6-9
6-12
6-10
6-E
6-11
6-16
6-12
6-E
6-13
6-19
6-14
6-19
6-15
6-Z
....
...... .....................................
6-16
6-22
CHXFTER 7.
UNDERCROUND CABLES, STRUCIURES, AND ASSOCIATED ELECTRICAL
COMPONENTS
Underground work..
.. .....
...........
.....................................................................
Work area protection.. ........................................ ..
,, ., .........................................
Existing obstruction protection
...................
...........................................................
Preparation for work in underground S~UC~IJUT~S ........................................................
Work inside underground sbructurcs .......................................................................
Heating materidS.. ..... . . .. . .. ......... .... ..... ......................................................
7-6
7-9
INTERIOR SYSTEMS
MEDIUWVOLTACE SYSTEMS
Interior medium-voltage work
....................... .................
.....................................
Medium-voltage safety background
.............................
........................ .............
Motion hazard.. ................... .........................
...................................................
Working an indoor equipment.. .................
,, ........................................................
CHAPTER 9.
LOW-VOLTAGE SYSTEMS
Interior low-voltage work
.................
....... .............................. ............................
Low-voltage saiety background ............................................................................
Review of iow-voltage work precautions,
....... .....
.,
.... ......... ..........
.......... .........
APPENLXX A
REFERENCES
A,TEND,X B
SAMPLE SAFETY EXAMINATION
LNDU
ii
System fad
LIST OF FIGURIS
6-1
6-Z
7-l
7-2
Ti tlr
Phasing check using hot-line stick and phasing testers..
.................
............... .. .......... ........ ~, ...........
Phasing check using voltage transiomer and wltmeter..
.......................................... ........................
Sampie oi a completed Safety Clearance Order, DA Form 5X-R..
... ..... ........... .................... ..........
Sample oi a completed Caution Order. DA Form 7407-R..
................ .................................... ..............
DangerTag, DAForm.7108.. ...........
..... .. ...... .. ... ......................... ....................................
CautionTag,DAFormj140.. ..... ............................................
~,.~~~.~.~,~ ................ ~,~,~. ....... ... ..
Craundingpath.. ....................... ............. .. .. .................
......................... .............................
Correctliftinginsrruction=
.................................... ............. ~~~~,~~~~~.~ ..............................................
Pikepoiemethod..
............. ........................... .........................................................
............... ..
Winchlinrmethud..
............... ..... ............. ...................... ...... ...................................................
Stepsinremovingamanholecover..
............................................................ .... ................. ....
Sailmrthodofmanholeventilallon.. ...................................... ......................................
......... .......
Pu*e
3-7
3-i
3-11
3-E
3-13
3-13
4-8
4-u
6-j
6-4
i-4
7-6
Tilk
OSHA permissible noise exposures..
................................................................................................
U.S. quideline on electric and magnetic field exposures..
............................ ...... ~~~,~~.
...........................
,RPA guideline on electric and magnetic iield rxposurre.. ..............
.....................................................
ACCIH guideline on electric and magnetic field exposures ior pacemakers
................................... .........
United Kingdom guideline on electric and magnetic field exposures..
....................................................
Recommended grounding cable sizes.. ............................................................................................
Minimum safe working distances. .....
~, ,,
.....................................................................................
..
Minimum safe approach distances.. ................. ..............................................................................
Protective equipment voltage dasses.. .............................................................................................
Energized line work methods
.........................................................................................................
Approximate safe working loads of new three-strand fiber ropes used in a straight puli..
..........................
Moisture regain oi fiber ropes ........................................................................................................
Average size of crew required to raise poles of different lengths by piking..
........... ................................
P**c
3-3
3-6
3-6
3-6
3-6
3-21
3-x
3-24
3-25
3-25
4-E
4-C
6-3
iii
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