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OSHA Region IV

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OSHA Region IV Electrical Outreach Construction Industry Photos 29 CFR 1926 Regulations Construction Industry Photos Standard 1926.951(b)(1) Description Fall ... – PowerPoint PPT presentation

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Title: OSHA Region IV


1
OSHA Region IV
  • Electrical Outreach
  • Construction Industry Photos
  • 29 CFR 1926 Regulations

2
Construction Industry Photos
  • Standard
  • 1926.951(b)(1)
  • Description
  • Fall Protection must be provided and used when
    working on towers and poles.

3
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4
Construction Industry Photos
  • Standard
  • 1926.950(d)(1)(iv)
  • Description
  • Protective grounds shall be applied on the
    disconnected(de-energized) lines or equipment to
    be worked on.

5
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6
Construction Industry Photos
  • Standard
  • 1926.954(j)
  • Description
  • Grounding cables and attachments must be capable 
    of conducting the anticipated fault current.

7
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8
Construction Industry Photos
  • Standard
  • 1926.954(j)
  • Description
  • Grounding cables and attachments must be secured
    to equipment in such a manner as to maintain
    adequate grounding. The manner in which the
    grounding attachment was installed in this photo
    is not adequate.

9
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10
Construction Industry Photos
  • Standard
  • 1926.955(d)(3)
  • Description
  • All pulling and tensioning equipment shall be
    isolated, insulated, or effectively grounded.

11
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12
Construction Industry Photos
  • Standard
  • 1926.950(d)(1)(iv)
  • Description
  • Use of proper equipment for grounding
    de-energized power lines is paramount to
    protecting employees engaged in line construction
    and maintenance.

13
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14
Construction Industry Photos
  • Standard
  • 1926.952(c)(2)(ii)
  • Description
  • Grounding Rods were not driven into the ground
    sufficiently to get an adequate ground.

15
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16
Construction Industry Photos
  • Standard
  • 1926.200(b)
  • Description
  • Danger signs shall be used where an immediate
    hazard exist

17
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18
Construction Industry Photos
  • This is a general view of an electrical
    Sub-station

19
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20
Construction Industry Photos
  • Standard
  • 1926.954(j)
  • Description
  • Ground lead conductance must be capable of
    conducting the anticipated fault current.

21
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22
Construction Industry Photos
  • Standard
  • 1926.550(a)(15)(i)
  • Description
  • For lines rated 50kv and below, minimum clearance
    between the lines and any part of the crane or
    load shall be 10 feet.

23
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24
Construction Industry Photos
  • Standard
  • 1926.550(a)(15)(ii)
  • Description
  • For lines rated over 50kv, minimum clearance
    between the lines and any part of the crane or
    load shall be 10 feet plus 0.4 inch for each 1kv
    over 50 kv.

25
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26
Construction Industry Photos
  • Standard
  • 1926.416(a)(3)
  • Description
  • Before work is begun the employer must ascertain
    that electrical circuits are not concealed behind
    walls or other locations in which contact can be
    made.

27
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28
Construction Industry Photos
  • Standard
  • 1926.405(a)(2)(ii)(J)
  • Description
  • Extension cord sets used with portable electric
    tools and lights shall be designed for hard or
    extra-hard usage.

29
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30
Wire Gauge
  • Cords are offered in many lengths and are marked
    with a size or "gauge." The gauge is based on the
    American Wire Gauge (AWG) System, in which the
    larger the wire, the smaller the AWG number. For
    example, a 12 gauge wire would be larger, and can
    power larger wattage appliances, than a 14 gauge
    wire.

31
Wire Classes
  • 12/3 means 12 gauge wire and /3 means that
    there are three wires in the cable
  • UL indicates the wire has been certified by the
    Underwriters Laboratory to be safe
  • SJ means appliance cord, stranded conductors,
    cotton layer between wire and insulation, jute
    filler, rubber outer jacket, lighter service. (S
    used by itself means extra hard service SV is
    light service only.)
  • T means load temperature must be less than 140
    degrees F (in dry conditions).
  • W means wet use types.

32
Construction Industry Photos
  • Standard
  • 1926.405(a)(2)(ii)(F)
  • Description
  • Temporary lights will not be suspended by their
    cords unless they are designed for this purpose.

33
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34
Construction Industry Photos
  • Standard
  • 1926.405(a)(2)(ii)(J)
  • Description
  • Electric extension cords used in the workplace
    must be of the three wire type.

35
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36
Construction Industry Photos
  • Standard
  • 1926.405(a)(2)(I)
  • Description
  • Electrical cords located on the ground must be
    protected from vehicular traffic.

37
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38
Construction Industry Photos
  • Standard
  • 1926.405(g)(1)(iii)(D)
  • Description
  • Electrical cords and cables will not be attached
    to building surfaces

39
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40
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41
Construction Industry Photos
  • Standard
  • 1926.405(g)(2)(iii)
  • Description
  • Electrical cords used in the workplace must be in
    continuous lengths without splice.

42
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43
Construction Industry Photos
  • Standard
  • 1926.416(a)(1)
  • Description
  • The bulb is removed from an electrical light
    socket exposing employees to the hazard of
    contacting energized parts.

44
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45
Construction Industry Photos
  • Standard
  • 1926.416(b)(2
  • Description
  • Walking spaces, walkways, and similar locations
    shall be kept clear of cords so as not to create
    a hazard to employees.

46
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