1910.268(2010)

§ 1910.268

29 CFR Ch. XVII (7–1–10 Edition)

3. Basic anatomy.
4. Patient assessment and first aid for the
following:
a. Respiratory arrest.
b. Cardiac arrest.
c. Hemorrhage.
d. Lacerations/abrasions.
e. Amputations.
f. Musculoskeletal injuries.
g. Shock.
h. Eye injuries.
i. Burns.
j. Loss of consciousness.
k. Extreme temperature exposure (hypothermia/hyperthermia)
l. Paralysis
m. Poisoning.
n. Loss of mental functioning (psychosis/
hallucinations, etc.). Artificial ventilation.
o. Drug overdose.
5. CPR.
SAE standard

APPENDIX C TO § 1910.266—COMPARABLE ISO
STANDARDS (NON-MANDATORY)
The following International Labor Organization (ISO) standards are comparable to the
corresponding Society of Automotive Engineers (Standards that are referenced in this
standard.)
Utilization of the ISO standards in lieu of
the corresponding SAE standards should result in a machine that meets the OSHA
standard.

ISO standard

SAE J1040

ISO 3471–1

SAE
SAE
SAE
SAE

ISO
ISO
ISO
ISO

J397
J231
J386
J185

6. Application of dressings and slings.
7. Treatment of strains, sprains, and fractures.
8. Immobilization of injured persons.
9. Handling and transporting injured persons.
10. Treatment of bites, stings, or contact
with poisonous plants or animals.

3164
3449
6683
2897

Subject
Performance Criteria for Rollover Protective Structures (ROPS) for Construction,
Earthmoving, Forestry and Mining Machines.
Deflection Limiting Volume—ROPS/FOPS Laboratory Evaluation.
Minimum Performance Criteria for Falling Object Protective Structures (FOPS).
Operator Restraint Systems for Off-Road Work Machines.
Access Systems for Off-Road Machines.

[59 FR 51741, Oct. 12, 1994, as amended at 60 FR 7449, Feb. 8, 1995; 60 FR 40458, Aug. 9, 1996;
60 FR 47035–47037, Sept. 8, 1995; 61 FR 9241, 9242, Mar. 7, 1996; 69 FR 18803, Apr. 9, 2004; 71 FR
16673, Apr. 3, 2006]

rmajette on DSK29S0YB1PROD with CFR

§ 1910.268

Telecommunications.

(a) Application. (1) This section sets
forth safety and health standards that
apply to the work conditions, practices, means, methods, operations, installations and processes performed at
telecommunications centers and at
telecommunications field installations,
which are located outdoors or in building spaces used for such field installations. Center work includes the installation, operation, maintenance, rearrangement, and removal of communications equipment and other associated equipment in telecommunications
switching centers. Field work includes
the installation, operation, maintenance, rearrangement, and removal of
conductors and other equipment used
for signal or communication service,
and of their supporting or containing
structures, overhead or underground,
on public or private rights of way, including buildings or other structures.
(2) These standards do not apply: (i)
To construction work, as defined in
§ 1910.12, nor (ii) to installations under

the exclusive control of electric utilities used for the purpose of communications or metering, or for generation, control, transformation, transmission, and distribution of electric
energy, which are located in buildings
used exclusively by the electric utilities for such purposes, or located outdoors on property owned or leased by
the electric utilities or on public highways, streets, roads, etc., or outdoors
by established rights on private property.
(3) Operations or conditions not specifically covered by this section are
subject to all the applicable standards
contained in this part 1910. See
§ 1910.5(c). Operations which involve
construction work, as defined in
§ 1910.12 are subject to all the applicable standards contained in part 1926 of
this chapter.
(b) General—(1) Buildings containing
telecommunications centers—(i) Illumination. Lighting in telecommunication
centers shall be provided in an adequate amount such that continuing
work operations, routine observations,

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Occupational Safety and Health Admin., Labor
and the passage of employees can be
carried out in a safe and healthful
manner. Certain specific tasks in centers, such as splicing cable and the
maintenance and repair of equipment
frame lineups, may require a higher
level of illumination. In such cases, the
employer shall install permanent lighting or portable supplemental lighting
to attain a higher level of illumination
shall be provided as needed to permit
safe performance of the required task.
(ii) Working surfaces. Guard rails and
toe boards may be omitted on distribution frame mezzanine platforms to permit access to equipment. This exemption applies only on the side or sides of
the platform facing the frames and
only on those portions of the platform
adjacent to equipped frames.
(iii) Working spaces. Maintenance
aisles, or wiring aisles, between equipment frame lineups are working spaces
and are not an exit route for purposes
of 29 CFR 1910.34.
(iv) Special doors. When blastproof or
power actuated doors are installed in
specially designed hardsite security
buildings and spaces, they shall be designed and installed so that they can
be used as a means of egress in emergencies.
(v) Equipment, machinery and machine
guarding. When power plant machinery
in telecommunications centers is operated with commutators and couplings
uncovered, the adjacent housing shall
be clearly marked to alert personnel to
the rotating machinery.
(2) Battery handling. (i) Eye protection devices which provide side as well
as frontal eye protection for employees
shall be provided when measuring storage battery specific gravity or handling electrolyte, and the employer
shall ensure that such devices are used
by the employees. The employer shall
also ensure that acid resistant gloves
and aprons shall be worn for protection
against spattering. Facilities for quick
drenching or flushing of the eyes and
body shall be provided unless the storage batteries are of the enclosed type
and equipped with explosion proof
vents, in which case sealed water rinse
or neutralizing packs may be substituted for the quick drenching or
flushing facilities. Employees assigned
to work with storage batteries shall be

§ 1910.268

instructed in emergency procedures
such as dealing with accidental acid
spills.
(ii) Electrolyte (acid or base, and distilled water) for battery cells shall be
mixed in a well ventilated room. Acid
or base shall be poured gradually, while
stirring, into the water. Water shall
never be poured into concentrated
(greater than 75 percent) acid solutions. Electrolyte shall never be placed
in metal containers nor stirred with
metal objects.
(iii) When taking specific gravity
readings, the open end of the hydrometer shall be covered with an acid resistant material while moving it from
cell to cell to avoid splashing or throwing the electrolyte.
(3) Employers must provide employees with readily accessible, adequate,
and appropriate first aid supplies. A
non-mandatory example of appropriate
supplies is listed in Appendix A to 29
CFR 1910.151.
(4) Hazardous materials. Highway mobile vehicles and trailers stored in garages in accordance with § 1910.110 may
be equipped to carry more than one
LP-gas container, but the total capacity of LP-gas containers per work vehicle stored in garages shall not exceed
100 pounds of LP-gas. All container
valves shall be closed when not in use.
(5) Compressed gas. When using or
transporting nitrogen cylinders in a
horizontal position, special compartments, racks, or adequate blocking
shall be provided to prevent cylinder
movement. Regulators shall be removed or guarded before a cylinder is
transported.
(6) Support structures. No employee, or
any material or equipment, may be
supported or permitted to be supported
on any portion of a pole structure,
platform, ladder, walkway or other elevated structure or aerial device unless
the employer ensures that the support
structure is first inspected by a competent person and it is determined to
be adequately strong, in good working
condition and properly secured in
place.
(7) Approach distances to exposed energized overhead power lines and parts. The
employer shall ensure that no employee approaches or takes any conductive object closer to any electrically

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§ 1910.268

29 CFR Ch. XVII (7–1–10 Edition)

energized overhead power lines and
parts than prescribed in Table R–2, unless:
(i) The employee is insulated or
guarded from the energized parts (insulating gloves rated for the voltage involved shall be considered adequate insulation), or
(ii) The energized parts are insulated
or guarded from the employee and any
other conductive object at a different
potential, or
(iii) The power conductors and equipment are deenergized and grounded.
TABLE R–2—APPROACH DISTANCES TO EXPOSED ENERGIZED OVERHEAD POWER LINES
AND PARTS
Voltage range (phase to phase, RMS)
300 V and less ....................................................
Over 300V, not over 750V ..................................
Over 750V not over 2 kV ....................................
Over 2 kV, not over 15 kV ..................................
Over 15 kV, not over 37 kV ................................
Over 37 kV, not over 87.5 kV .............................
Over 87.5 kV, not over 121 kV ...........................
Over 121 kV, not over 140 kV ............................

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1 Avoid

Approach
distance
(inches)
(1)
12
18
24
36
42
48
54

contact.

(8) Illumination of field work. Whenever natural light is insufficient to
adequately illuminate the worksite, artificial illumination shall be provided
to enable the employee to perform the
work safely.
(c) Training. Employers shall provide
training in the various precautions and
safe practices described in this section
and shall insure that employees do not
engage in the activities to which this
section applies until such employees
have received proper training in the
various precautions and safe practices
required by this section. However,
where the employer can demonstrate
that an employee is already trained in
the precautions and safe practices required by this section prior to his employment, training need not be provided to that employee in accordance
with this section. Where training is required, it shall consist of on-the-job
training or classroom-type training or
a combination of both. The employer
shall certify that employees have been
trained by preparing a certification
record which includes the identity of
the person trained, the signature of the
employer or the person who conducted

the training, and the date the training
was
completed.
The
certification
record shall be prepared at the completion of training and shall be maintained on file for the duration of the
employee’s employment. The certification record shall be made available
upon request to the Assistant Secretary for Occupational Safety and
Health. Such training shall, where appropriate, include the following subjects:
(1) Recognition and avoidance of dangers relating to encounters with harmful substances and animal, insect, or
plant life;
(2) Procedures to be followed in emergency situations; and,
(3) First aid training, including instruction in artificial respiration.
(d) Employee protection in public work
areas. (1) Before work is begun in the
vicinity of vehicular or pedestrian traffic which may endanger employees,
warning signs and/or flags or other
traffic control devices shall be placed
conspicuously to alert and channel approaching traffic. Where further protection is needed, barriers shall be utilized. At night, warning lights shall be
prominently displayed, and excavated
areas shall be enclosed with protective
barricades.
(2) If work exposes energized or moving parts that are normally protected,
danger signs shall be displayed and barricades erected, as necessary, to warn
other personnel in the area.
(3) The employer shall insure that an
employee finding any crossed or fallen
wires which create or may create a
hazardous situation at the work area:
(i) Remains on guard or adopts other
adequate means to warn other employees of the danger and (ii) has the proper
authority notified at the earliest practical moment.
(e) Tools and personal protective equipment—Generally. Personal protective
equipment, protective devices and special tools needed for the work of employees shall be provided and the employer shall ensure that they are used
by employees. Before each day’s use
the employer shall ensure that these
personal protective devices, tools, and
equipment are carefully inspected by a
competent person to ascertain that
they are in good condition.

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Occupational Safety and Health Admin., Labor
(f) Rubber insulating equipment. (1)
Rubber insulating equipment designed
for the voltage levels to be encountered
shall be provided and the employer
shall ensure that they are used by employees as required by this section. The
requirements of § 1910.137, Electrical
Protective Equipment, shall be followed except for Table I–6.
(2) The employer is responsible for
the periodic retesting of all insulating
gloves, blankets, and other rubber insulating equipment. This retesting
shall be electrical, visual and mechanical. The following maximum retesting
intervals shall apply:
Gloves, blankets, and other insulating equipment

Natural
rubber

Synthetic
rubber

Months

rmajette on DSK29S0YB1PROD with CFR

New ...............................................
Re-issued ......................................

12
9

18
15

(3) Gloves and blankets shall be
marked to indicate compliance with
the retest schedule, and shall be
marked with the date the next test is
due. Gloves found to be defective in the
field or by the tests set forth in paragraph (f)(2) of this section shall be destroyed by cutting them open from the
finger to the gauntlet.
(g) Personal climbing equipment—(1)
General. Safety belts and straps shall
be provided and the employer shall ensure their use when work is performed
at positions more than 4 feet above
ground, on poles, and on towers, except
as provided in paragraphs (n)(7) and
(n)(8) of this section. No safety belts,
safety straps or lanyards acquired after
July 1, 1975 may be used unless they
meet the tests set forth in paragraph
(g)(2) of this section. The employer
shall ensure that all safety belts and
straps are inspected by a competent
person prior to each day’s use to determine that they are in safe working
condition.
(2) Telecommunication lineman’s body
belts, safety straps, and lanyards—(i)
General requirements. (A) Hardware for
lineman’s body belts, safety straps, and
lanyards shall be drop forged or pressed
steel and shall have a corrosion resistant finish tested to meet the requirements of the American Society for
Testing and Materials B117–64, which is
incorporated by reference as specified

§ 1910.268

in § 1910.6 (50-hour test). Surfaces shall
be smooth and free of sharp edges. Production samples of lineman’s safety
straps, body belts and lanyards shall be
approved by a nationally recognized
testing laboratory, as having been tested in accordance with and as meeting
the requirements of this paragraph.
(B) All buckles shall withstand a
2,000-pound tensile test with a maximum permanent deformation no
greater than one sixty-forth inch.
(C) D rings shall withstand a 5,000pound tensile test without cracking or
breaking.
(D) Snaphooks shall withstand a
5,000-pound tensile test, or shall withstand a 3,000-pound tensile test and a
180° bend test. Tensile failure is indicated by distortion of the snaphook
sufficient to release the keeper; bend
test failure is indicated by cracking of
the snaphook.
(ii) Specific requirements. (A)(1) All
fabric used for safety straps shall be
capable of withstanding an A.C. dielectric test of not less than 25,000 volts per
foot ‘‘dry’’ for 3 minutes, without visible deterioration.
(2) All fabric and leather used shall
be tested for leakage current. Fabric or
leather may not be used if the leakage
current exceeds 1 milliampere when a
potential of 3,000 volts is applied to the
electrodes positioned 12 inches apart.
(3) In lieu of alternating current
tests, equivalent direct current tests
may be performed.
(B) The cushion part of the body belt
shall:
(1) Contain no exposed rivets on the
inside. This provision does not apply to
belts used by craftsmen not engaged in
line work.
(2) Be at least three inches in width;
(3) Be at least five thirty-seconds
(5⁄32) inch thick, if made of leather; and
(C) [Reserved]
(D) Suitable copper, steel, or equivalent liners shall be used around the
bars of D rings to prevent wear between these members and the leather
or fabric enclosing them.
(E) All stitching shall be done with a
minimum 42-pound weight nylon or
equivalent thread and shall be lock
stitched. Stitching parallel to an edge
may not be less than three-sixteenths

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§ 1910.268

29 CFR Ch. XVII (7–1–10 Edition)

(3⁄16) inch from the edge of the narrowest member caught by the thread.
The use of cross stitching on leather is
prohibited.
(F) The keepers of snaphooks shall
have a spring tension that will not
allow the keeper to begin to open when
a weight of 21⁄2 pounds or less is applied, but the keepers shall begin to
open when a weight of four pounds is
applied. In making this determination,
the weight shall be supported on the
keeper against the end of the nose.
(G) Safety straps, lanyards, and body
belts shall be tested in accordance with
the following procedure:
(1) Attach one end of the safety strap
or lanyard to a rigid support, and the
other end to a 250-pound canvas bag of
sand;
(2) Allow the 250-pound canvas bag of
sand to free fall 4 feet when testing
safety straps and 6 feet when testing
lanyards. In each case, the strap or lanyard shall stop the fall of the 250-pound
bag;
(3) Failure of the strap or lanyard
shall be indicated by any breakage or
slippage sufficient to permit the bag to
fall free from the strap or lanyard.
(4) The entire ‘‘body belt assembly’’
shall be tested using on D ring. A safety strap or lanyard shall be used that is
capable of passing the ‘‘impact loading
test’’
described
in
paragraph
(g)(2)(ii)(G)(2) of this section and attached as required in paragraph
(g)(2)(ii)(G)(1) of this section. The body
belt shall be secured to the 250-pound
bag of sand at a point which simulates
the waist of a man and shall be dropped
as stated in paragraph (g)(2)(ii)(G)(2) of
this section. Failure of the body belt
shall be indicated by any breakage or
slippage sufficient to permit the bag to
fall free from the body belt.
(3) Pole climbers. (i) Pole climbers
may not be used if the gaffs are less
than 11⁄4 inches in length as measured
on the underside of the gaff. The gaffs
of pole climbers shall be covered with
safety caps when not being used for
their intended use.
(ii) The employer shall ensure that
pole climbers are inspected by a competent person for the following conditions: Fractured or cracked gaffs or leg
irons, loose or dull gaffs, broken straps
or buckles. If any of these conditions

exist, the defect shall be corrected before the climbers are used.
(iii) Pole climbers shall be inspected
as required in this paragraph (g)(3) before each day’s use and a gaff cut-out
test performed at least weekly when in
use.
(iv) Pole climbers may not be worn
when:
(A) Working in trees (specifically designed tree climbers shall be used for
tree climbing),
(B) Working on ladders,
(C) Working in an aerial lift,
(D) Driving a vehicle, nor
(E) Walking on rocky, hard, frozen,
brushy or hilly terrain.
(h) Ladders. (1) The employer shall
ensure that no employee nor any material or equipment may be supported or
permitted to be supported on any portion of a ladder unless it is first determined, by inspections and checks conducted by a competent person that
such ladder is adequately strong, in
good condition, and properly secured in
place, as required in subpart D of this
part and as required in this section.
(2) The spacing between steps or
rungs permanently installed on poles
and towers shall be no more than 18
inches (36 inches on any one side). This
requirement also applies to fixed ladders on towers, when towers are so
equipped. Spacing between steps shall
be uniform above the initial unstepped
section, except where working, standing, or access steps are required. Fixed
ladder rungs and step rungs for poles
and towers shall have a minimum diameter of 5⁄8″. Fixed ladder rungs shall
have a minimum clear width of 12
inches. Steps for poles and towers shall
have a minimum clear width of 41⁄2
inches. The spacing between detachable
steps may not exceed 30 inches on any
one side, and these steps shall be properly secured when in use.
(3) Portable wood ladders intended
for general use may not be painted but
may be coated with a transclucent nonconductive coating. Portable wood ladders may not be longitudinally reinforced with metal.
(4) Portable wood ladders that are
not being carried on vehicles and are
not in active use shall be stored where

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Occupational Safety and Health Admin., Labor
they will not be exposed to the elements and where there is good ventilation.
(5) The provisions of § 1910.25(c)(5)
shall apply to rolling ladders used in
telecommunications centers, except
that such ladders shall have a minimum inside width, between the side
rails, of at least eight inches.
(6) Climbing ladders or stairways on
scaffolds used for access and egress
shall be affixed or built into the scaffold by proper design and engineering,
and shall be so located that their use
will not disturb the stability of the
scaffold. The rungs of the climbing device shall be equally spaced, but may
not be less than 12 inches nominal nor
more than 16 inches nominal apart.
Horizontal end rungs used for platform
support may also be utilized as a
climbing device if such rungs meet the
spacing requirement of this paragraph
(h)(6), and if there is sufficient clearance between the rung and the edge of
the platform to afford an adequate
handhold. If a portable ladder is affixed
to the scaffold, it shall be securely attached and shall have rungs meeting
the spacing requirements of this paragraph (h)(6). Clearance shall be provided in the back of the ladder of not
less than 6 inches from center of rung
to the nearest scaffold structural member.
(7) When a ladder is supported by an
aerial strand, and ladder hooks or
other supports are not being used, the
ladder shall be extended at least 2 feet
above the strand and shall be secured
to it (e.g. lashed or held by a safety
strap around the strand and ladder side
rail). When a ladder is supported by a
pole, it shall be securely lashed to the
pole unless the ladder is specifically
designed to prevent movement when
used in this application.
(8) The following requirements apply
to metal manhole ladders. (i) Metal
manhole ladders shall be free of structural defects and free of accident hazards such as sharp edges and burrs. The
metal shall be protected against corrosion unless inherently corrosion-resistant.
(ii) These ladders may be designed
with parallel side rails, or with side
rails varying uniformly in separation
along the length (tapered), or with side

§ 1910.268

rails flaring at the base to increase stability.
(iii) The spacing of rungs or steps
shall be on 12-inch centers.
(iv) Connections between rungs or
steps and siderails shall be constructed
to insure rigidity as well as strength.
(v) Rungs and steps shall be corrugated, knurled, dimpled, coated with
skid-resistant material, or otherwise
treated to minimize the possibility of
slipping.
(vi) Ladder hardware shall meet the
strength requirements of the ladder’s
component parts and shall be of a material that is protected against corrosion unless inherently corrosion-resistant. Metals shall be so selected as to
avoid excessive galvanic action.
(i) Other tools and personal protective
equipment—(1) Head protection. Head
protection meeting the requirements of
ANSI Z89.2–1971, ‘‘Safety Requirements
for Industrial Protective Helmets for
Electrical Workers, Class B’’ shall be
provided whenever there is exposure to
possible high voltage electrical contact, and the employer shall ensure
that the head protection is used by employees. ANSI Z89.2–1971 is incorporated by reference as specified in
§ 1910.6.
(2) Eye protection. Eye protection
meeting the requirements of § 1910.133
(a)(2) thru (a)(6) shall be provided and
the employer shall ensure its use by
employees where foreign objects may
enter the eyes due to work operations
such as but not limited to:
(i) Drilling or chipping stone, brick
or masonry, breaking concrete or pavement, etc. by hand tools (sledgehammer, etc.) or power tools such as
pneumatic drills or hammers;
(ii) Working on or around high speed
emery or other grinding wheels unprotected by guards;
(iii) Cutting or chipping terra cotta
ducts, tile, etc.;
(iv) Working under motor vehicles requiring hammering;
(v) Cleaning operations using compressed air, steam, or sand blast;
(vi) Acetylene welding or similar operations where sparks are thrown off;
(vii) Using powder actuated stud
drivers;
(viii) Tree pruning or cutting underbrush;

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§ 1910.268

29 CFR Ch. XVII (7–1–10 Edition)

(ix) Handling battery cells and solutions, such as taking battery readings
with a hydrometer and thermometer;
(x) Removing or rearranging strand
or open wire; and
(xi) Performing lead sleeve wiping
and while soldering.
(3) Tent heaters. Flame-type heaters
may not be used within ground tents or
on platforms within aerial tents unless:
(i) The tent covers are constructed of
fire resistant materials, and
(ii) Adequate ventilation is provided
to maintain safe oxygen levels and
avoid harmful buildup of combustion
products and combustible gases.
(4) Torches. Torches may be used on
aerial splicing platforms or in buckets
enclosed by tents provided the tent material is constructed of fire resistant
material and the torch is turned off
when not in actual use. Aerial tents
shall be adequately ventilated while
the torch is in operation.
(5) Portable power equipment. Nominal
120V, or less, portable generators used
for providing power at work locations
do not require grounding if the output
circuit is completely isolated from the
frame of the unit.
(6) Vehicle-mounted utility generators.
Vehicle-mounted utility generators
used for providing nominal 240V AC or
less for powering portable tools and
equipment need not be grounded to
earth if all of the following conditions
are met:
(i) One side of the voltage source is
solidly strapped to the metallic structure of the vehicle;
(ii) Grounding-type outlets are used,
with a ‘‘grounding’’ conductor between
the outlet grounding terminal and the
side of the voltage source that is
strapped to the vehicle;
(iii) All metallic encased tools and
equipment that are powered from this
system are equipped with three-wire
cords and grounding-type attachment
plugs, except as designated in paragraph (i)(7) of this section.
(7) Portable lights, tools, and appliances. Portable lights, tools, and appliances having noncurrent-carrying external metal housing may be used with
power equipment described in paragraph (i)(5) of this section without an
equipment grounding conductor. When
operated from commercial power such

metal parts of these devices shall be
grounded, unless these tools or appliances are protected by a system of double insulation, or its equivalent. Where
such a system is employed, the equipment shall be distinctively marked to
indicate double insulation.
(8) Soldering devices. Grounding shall
be omitted when using soldering irons,
guns or wire-wrap tools on telecommunications circuits.
(9) Lead work. The wiping of lead
joints using melted solder, gas fueled
torches, soldering irons or other appropriate heating devices, and the soldering of wires or other electrical connections do not constitute the welding,
cutting and brazing described in subpart Q of this part. When operated from
commercial power the metal housing of
electric solder pots shall be grounded.
Electric solder pots may be used with
the power equipment described in paragraph (i)(5) of this section without a
grounding conductor. The employer
shall ensure that wiping gloves or
cloths and eye protection are used in
lead wiping operations. A drip pan to
catch hot lead drippings shall also be
provided and used.
(j) Vehicle-mounted material handling
devices and other mechanical equipment—
(1) General. (i) The employer shall ensure that visual inspections are made
of the equipment by a competent person each day the equipment is to be
used to ascertain that it is in good condition.
(ii) The employer shall ensure that
tests shall be made at the beginning of
each shift by a competent person to insure the vehicle brakes and operating
systems are in proper working condition.
(2) Scrapers, loaders, dozers, graders
and tractors. (i) All rubber-tired, selfpropelled scrapers, rubber-tired front
end loaders, rubber-tired dozers, agricultural and industrial tractors, crawler tractors, crawler-type loaders, and
motor graders, with or without attachments, that are used in telecommunications work shall have rollover protective structures that meet the requirements of subpart W of part 1926 of
this Title.
(ii) Eye protection shall be provided
and the employer shall ensure that it is
used by employees when working in

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Occupational Safety and Health Admin., Labor
areas where flying material is generated.
(3) Vehicle-mounted elevating and rotating work platforms. These devices
shall not be operated with any conductive part of the equipment closer to exposed energized power lines than the
clearances set forth in Table R–2 of
this section.
(4) Derrick trucks and similar equipment. (i) This equipment shall not be
operated with any conductive part of
the equipment closer to exposed energized power lines than the clearances
set forth in Table R–2 of this section.
(ii) When derricks are used to handle
poles near energized power conductors,
these operations shall comply with the
requirements contained in paragraphs
(b)(7) and (n)(11) of this section.
(iii) Moving parts of equipment and
machinery carried on or mounted on
telecommunications line trucks shall
be guarded. This may be done with barricades as specified in paragraph (d)(2)
of this section.
(iv) Derricks and the operation of
derricks shall comply with the following requirements: (A) Manufacturer’s specifications, load ratings and instructions for derrick operation shall
be strictly observed.
(B) Rated load capacities and instructions related to derrick operation shall
be conspicuously posted on a permanent weather-resistant plate or decal
in a location on the derrick that is
plainly visible to the derrick operator.
(C) Prior to derrick operation the
parking brake must be set and the stabilizers extended if the vehicle is so
equipped. When the vehicle is situated
on a grade, at least two wheels must be
chocked on the downgrade side.
(D) Only persons trained in the operation of the derrick shall be permitted
to operate the derrick.
(E) Hand signals to derrick operators
shall be those prescribed by ANSI
B30.6–1969, ‘‘Safety Code for Derricks’’,
which is incorporated by reference as
specified in § 1910.6.
(F) The employer shall ensure that
the derrick and its associated equipment are inspected by a competent person at intervals set by the manufacturer but in no case less than once per
year. Records shall be maintained including the dates of inspections, and

§ 1910.268

necessary repairs made, if corrective
action was required.
(G) Modifications or additions to the
derrick and its associated equipment
that alter its capacity or affect its safe
operation shall be made only with written certification from the manufacturer, or other equivalent entity, such
as a nationally recognized testing laboratory, that the modification results
in the equipment being safe for its intended use. Such changes shall require
the changing and posting of revised capacity and instruction decals or plates.
These new ratings or limitations shall
be as provided by the manufacturer or
other equivalent entity.
(H) Wire rope used with derricks
shall be of improved plow steel or
equivalent. Wire rope safety factors
shall be in accordance with American
National Standards Institute B30.6–
1969.
(I) Wire rope shall be taken out of
service, or the defective portion removed, when any of the following conditions exist: (1) The rope strength has
been significantly reduced due to corrosion, pitting, or excessive heat, or
(2) The thickness of the outer wires
of the rope has been reduced to twothirds or less of the original thickness,
or
(3) There are more than six broken
wires in any one rope lay, or
(4) There is excessive permanent distortion caused by kinking, crushing, or
severe twisting of the rope.
(k) Materials handling and storage—(1)
Poles. When working with poles in piles
or stacks, work shall be performed
from the ends of the poles as much as
possible, and precautions shall be
taken for the safety of employees at
the other end of the pole. During pole
hauling operations, all loads shall be
secured
to
prevent
displacement.
Lights, reflectors and/or flags shall be
displayed on the end and sides of the
load as necessary. The requirements
for installation, removal, or other handling of poles in pole lines are prescribed in paragraph (n) of this section
which pertains to overhead lines. In
the
case
of
hoisting
machinery
equipped
with
a
positive
stop
loadholding device, it shall be permissible for the operator to leave his position at the controls (while a load is

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§ 1910.268

29 CFR Ch. XVII (7–1–10 Edition)

suspended) for the sole purpose of assisting in positioning the load prior to
landing it. Prior to unloading steel,
poles, crossarms, and similar material,
the load shall be thoroughly examined
to ascertain that the load has not
shifted, that binders or stakes have not
broken, and that the load is not otherwise hazardous to employees.
(2) Cable reels. Cable reels in storage
shall be checked or otherwise restrained when there is a possibility
that they might accidentally roll from
position.
(l) Cable fault locating and testing. (1)
Employees involved in using high
voltages to locate trouble or test cables shall be instructed in the precautions necessary for their own safety
and the safety of other employees.
(2) Before the voltage is applied,
cable conductors shall be isolated to
the extent practicable. Employees
shall be warned, by such techniques as
briefing and tagging at all affected locations, to stay clear while the voltage
is applied.
(m) Grounding for employee protection—pole lines—(1) Power conductors.
Electric power conductors and equipment shall be considered as energized
unless the employee can visually determine that they are bonded to one of
the grounds listed in paragraph (m)(4)
of this section.
(2) Nonworking open wire. Nonworking
open wire communications lines shall
be bonded to one of the grounds listed
in paragraph (m)(4) of this section.
(3) Vertical power conduit, power
ground wires and street light fixtures. (i)
Metal power conduit on joint use poles,
exposed vertical power ground wires,
and street light fixtures which are
below communications attachments or
less than 20 inches above these attachments, shall be considered energized
and shall be tested for voltage unless
the employee can visually determine
that they are bonded to the communications suspension strand or cable
sheath.
(ii) If no hazardous voltage is shown
by the voltage test, a temporary bond
shall be placed between such street
light fixture, exposed vertical power
grounding conductor, or metallic power
conduit and the communications cable
strand. Temporary bonds used for this

purpose shall have sufficient conductivity to carry at least 500 amperes for
a period of one second without fusing.
(4) Suitable protective grounding. Acceptable grounds for protective grounding are as follows:
(i) A vertical ground wire which has
been tested, found safe, and is connected to a power system multigrounded neutral or the grounded neutral of a power secondary system where
there are at least three services connected;
(ii) Communications cable sheath or
shield and its supporting strand where
the sheath or shield is:
(A) Bonded to an underground or buried cable which is connected to a central office ground, or
(B) Bonded to an underground metallic piping system, or
(C) Bonded to a power system multigrounded neutral or grounded neutral
of a power secondary system which has
at least three services connected;
(iii) Guys which are bonded to the
grounds specified in paragraphs (m)(4)
(i) and (ii) of this section and which
have continuity uninterrupted by an
insulator; and
(iv) If all of the preceding grounds
are not available, arrays of driven
ground rods where the resultant resistance to ground will be low enough to
eliminate danger to personnel or permit prompt operation of protective devices.
(5) Attaching and removing temporary
bonds. When attaching grounds (bonds),
the first attachment shall be made to
the protective ground. When removing
bonds, the connection to the line or
equipment shall be removed first. Insulating gloves shall be worn during
these operations.
(6) Temporary grounding of suspension
strand. (i) The suspension strand shall
be grounded to the existing grounds
listed in paragraph (m)(4) of this section when being placed on jointly used
poles or during thunderstorm activity.
(ii) Where power crossings are encountered on nonjoint lines, the strand
shall be bonded to an existing ground
listed in paragraph (m)(4) of this section as close as possible to the crossing. This bonding is not required where

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Occupational Safety and Health Admin., Labor
crossings are made on a common crossing pole unless there is an upward
change in grade at the pole.
(iii) Where roller-type bonds are
used, they shall be restrained so as to
avoid stressing the electrical connections.
(iv) Bonds between the suspension
strand and the existing ground shall be
at least No. 6AWG copper.
(v) Temporary bonds shall be left in
place until the strand has been tensioned, dead-ended, and permanently
grounded.
(vi) The requirements of paragraphs
(m)(6)(i) through (m)(6)(v) of this section do not apply to the installation of
insulated strand.
(7) Antenna work-radio transmitting
stations 3–30 MHZ. (i) Prior to grounding a radio transmitting station antenna, the employer shall insure that
the rigger in charge:
(A) Prepares a danger tag signed with
his signature,
(B) Requests the transmitting technician to shutdown the transmitter and
to ground the antenna with its grounding switch,
(C) Is notified by the transmitting
technician that the transmitter has
been shutdown, and
(D) Tags the antenna ground switch
personally in the presence of the transmitting technician after the antenna
has been grounded by the transmitting
technician.
(ii) Power shall not be applied to the
antenna, nor shall the grounding
switch be opened under any circumstances while the tag is affixed.
(iii)(A) Where no grounding switches
are provided, grounding sticks shall be
used, one on each side of line, and tags
shall be placed on the grounding sticks,
antenna switch, or plate power switch
in a conspicuous place.
(B) When necessary to further reduce
excessive radio frequency pickup,
ground sticks or short circuits shall be
placed directly on the transmission
lines near the transmitter in addition
to the regular grounding switches.
(C) In other cases, the antenna lines
may be disconnected from ground and
the transmitter to reduce pickup at the
point in the field.
(iv) All radio frequency line wires
shall be tested for pickup with an insu-

§ 1910.268

lated probe before they are handled either with bare hands or with metal
tools.
(v) The employer shall insure that
the transmitting technician warn the
riggers about adjacent lines which are,
or may become energized.
(vi) The employer shall insure that
when antenna work has been completed, the rigger in charge of the job
returns to the transmitter, notifies the
transmitting technician in charge that
work has been completed, and personally removes the tag from the antenna
ground switch.
(n) Overhead lines—(1) Handling suspension strand. (i) The employer shall
insure that when handling cable suspension strand which is being installed
on poles carrying exposed energized
power conductors, employees shall
wear insulating gloves and shall avoid
body contact with the strand until
after it has been tensioned, dead-ended
and permanently grounded.
(ii) The strand shall be restrained
against upward movement during installation:
(A) On joint-use poles, where there is
an upward change in grade at the pole,
and
(B) On non-joint-use poles, where the
line croses under energized power conductors.
(2) Need for testing wood poles. Unless
temporary guys or braces are attached,
the following poles shall be tested in
accordance with paragraph (n)(3) of
this section and determined to be safe
before employees are permitted to
climb them:
(i) Dead-end poles, except properly
braced or guyed ‘‘Y’’ or ‘‘T’’ cable junction poles,
(ii) Straight line poles which are not
storm guyed and where adjacent span
lengths exceed 165 feet,
(iii) Poles at which there is a downward change in grade and which are
not guyed or braced corner poles or
cable junction poles,
(iv) Poles which support only telephone drop wire, and
(v) Poles which carry less than ten
communication line wires. On joint use
poles, one power line wire shall be considered as two communication wires
for purposes of this paragraph (n)(2)(v).

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§ 1910.268

29 CFR Ch. XVII (7–1–10 Edition)

(3) Methods for testing wood poles. One
of the following methods or an equivalent method shall be used for testing
wood poles:
(i) Rap the pole sharply with a hammer weighing about 3 pounds, starting
near the ground line and continuing
upwards circumferentially around the
pole to a height of approximately 6
feet. The hammer will produce a clear
sound and rebound sharply when striking sound wood. Decay pockets will be
indicated by a dull sound and/or a less
pronounced hammer rebound. When
decay pockets are indicated, the pole
shall be considered unsafe. Also, prod
the pole as near the ground line as possible using a pole prod or a screwdriver
with a blade at least 5 inches long. If
substantial decay is encountered, the
pole shall be considered unsafe.
(ii) Apply a horizontal force to the
pole and attempt to rock it back and
forth in a direction perpendicular to
the line. Caution shall be exercised to
avoid causing power wires to swing together. The force may be applied either
by pushing with a pike pole or pulling
with a rope. If the pole cracks during
the test, it shall be considered unsafe.
(4) Unsafe poles or structures. Poles or
structures determined to be unsafe by
test or observation may not be climbed
until made safe by guying, bracing or
other adequate means. Poles determined to be unsafe to climb shall, until
they are made safe, be tagged in a conspicuous place to alert and warn all
employees of the unsafe condition.
(5) Test requirements for cable suspension strand. (i) Before attaching a splicing platform to a cable suspension
strand, the strand shall be tested and
determined to have strength sufficient
to support the weight of the platform
and the employee. Where the strand
crosses above power wires or railroad
tracks it may not be tested but shall be
inspected in accordance with paragraph
(n)(6) of this section.
(ii) The following method or an
equivalent method shall be used for
testing the strength of the strand: A
rope, at least three-eighths inch in diameter, shall be thrown over the
strand. On joint lines, the rope shall be
passed over the strand using tree pruner handles or a wire raising tool. If two
employees are present, both shall grip

the double rope and slowly transfer
their entire weight to the rope and attempt to raise themselves off the
ground. If only one employee is
present, one end of the rope which has
been passed over the strand shall be
tied to the bumper of the truck, or
other equally secure anchorage. The
employee then shall grasp the other
end of the rope and attempt to raise
himself off the ground.
(6) Inspection of strand. Where strand
passes over electric power wires or railroad tracks, it shall be inspected from
an elevated working position at each
pole supporting the span in question.
The strand may not be used to support
any splicing platform, scaffold or cable
car, if any of the following conditions
exist:
(i) Corrosion so that no galvanizing
can be detected,
(ii) One or more wires of the strand
are broken,
(iii) Worn spots, or
(iv) Burn marks such as those caused
by contact with electric power wires.
(7) Outside work platforms. Unless adequate railings are provided, safety
straps and body belts shall be used
while working on elevated work platforms such as aerial splicing platforms,
pole platforms, ladder platforms and
terminal balconies.
(8) Other elevated locations. Safety
straps and body belts shall be worn
when working at elevated positions on
poles, towers or similar structures,
which do not have adequately guarded
work areas.
(9) Installing and removing wire and
cable. Before installing or removing
wire or cable, the pole or structure
shall be guyed, braced, or otherwise
supported, as necessary, to prevent
failure of the pole or structure.
(10) Avoiding contact with energized
power conductors or equipment. When
cranes, derricks, or other mechanized
equipment are used for setting, moving, or removing poles, all necessary
precautions shall be taken to avoid
contact with energized power conductors or equipment.
(11) Handling poles near energized
power conductors. (i) Joint use poles
may not be set, moved, or removed
where the nominal voltage of open

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Occupational Safety and Health Admin., Labor
electrical power conductors exceeds
34.5kV phase to phase (20kV to ground).
(ii) Poles that are to be placed,
moved or removed during heavy rains,
sleet or wet snow in joint lines carrying more than 8.7kV phase to phase
voltage (5kV to ground) shall be guarded or otherwise prevented from direct
contact with overhead energized power
conductors.
(iii)(A) In joint lines where the power
voltage is greater than 750 volts but
less than 34.5kV phase to phase (20 kV
to ground), wet poles being placed,
moved or removed shall be insulated
with either a rubber insulating blanket, a fiberglass box guide, or equivalent protective equipment.
(B) In joint lines where the power
voltage is greater than 8.7 kV phase to
phase (5kV to ground) but less than
34.5kV phase to phase (20 kV to
ground), dry poles being placed, moved,
or removed shall be insulated with either a rubber insulating blanket, a fiberglass box guide, or equivalent protective equipment.
(C) Where wet or dry poles are being
removed, insulation of the pole is not
required if the pole is cut off 2 feet or
more below the lowest power wire and
also cut off near the ground line.
(iv) Insulating gloves shall be worn
when handling the pole with either
hands or tools, when there exists a possibility that the pole may contact a
power conductor. Where the voltage to
ground of the power conductor exceeds
15kV to ground, Class II gloves (as defined in ANSI J6.6–1971) shall be used.
For voltages not exceeding 15kV to
ground, insulating gloves shall have a
breakdown voltage of at least 17kV.
(v) The guard or insulating material
used to protect the pole shall meet the
appropriate 3 minute proof test voltage
requirements contained in the ANSI
J6.4–1971.
(vi) When there exists a possibility of
contact between the pole or the vehicle-mounted equipment used to handle
the pole, and an energized power conductor, the following precautions shall
be observed:
(A) When on the vehicle which carries the derrick, avoid all contact with
the ground, with persons standing on
the ground, and with all grounded objects such as guys, tree limbs, or metal

§ 1910.268

sign posts. To the extent feasible, remain on the vehicle as long as the possibility of contact exists.
(B) When it is necessary to leave the
vehicle, step onto an insulating blanket and break all contact with the vehicle before stepping off the blanket
and onto the ground. As a last resort, if
a blanket is not available, the employee may jump cleanly from the vehicle.
(C) When it is necessary to enter the
vehicle, first step onto an insulating
blanket and break all contact with the
ground, grounded objects and other
persons before touching the truck or
derrick.
(12) Working position on poles. Climbing and working are prohibited above
the level of the lowest electric power
conducter on the pole (exclusive of
vertical runs and street light wiring),
except:
(i) Where communications facilities
are attached above the electric power
conductors, and a rigid fixed barrier is
installed between the electric power facility and the communications facility,
or
(ii) Where the electric power conductors are cabled secondary service drops
carrying less than 300 volts to ground
and are attached 40 inches or more
below the communications conductors
or cables.
(13) Metal tapes and ropes. (i) Metal
measuring tapes, metal measuring
ropes, or tapes containing conductive
strands may not be used when working
near exposed energized parts.
(ii) Where it is necessary to measure
clearances from energized parts, only
nonconductive devices shall be used.
(o) Underground lines. The provisions
of this paragraph apply to the guarding
of manholes and street openings, and
to the ventilation and testing for gas
in manholes and unvented vaults,
where telecommunications field work
is performed on or with underground
lines.
(1) Guarding manholes and street openings. (i) When covers of manholes or
vaults are removed, the opening shall
be promptly guarded by a railing, temporary cover, or other suitable temporary barrier which is appropriate to
prevent an accidental fall through the
opening and to protect employees

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§ 1910.268

29 CFR Ch. XVII (7–1–10 Edition)

working in the manhole from foreign
objects entering the manhole.
(ii) While work is being performed in
the manhole, a person with basic first
aid training shall be immediately
available to render assistance if there
is cause for believing that a safety hazard exists, and if the requirements contained in paragraphs (d)(1) and (o)(1)(i)
of this section do not adequately protect the employee(s). Examples of manhole worksite hazards which shall be
considered to constitute a safety hazard include, but are not limited to:
(A) Manhole worksites where safety
hazards are created by traffic patterns
that cannot be corrected by provisions
of paragraph (d)(1) of this section.
(B) Manhole worksites that are subject to unusual water hazards that cannot be abated by conventional means.
(C) Manhole worksites that are occupied jointly with power utilities as described in paragraph (o)(3) of this section.
(2) Requirements prior to entering manholes and unvented vaults. (i) Before an
employee enters a manhole, the following steps shall be taken:
(A) The internal atmosphere shall be
tested for combustible gas and, except
when continuous forced ventilation is
provided, the atmosphere shall also be
tested for oxygen deficiency.
(B) When unsafe conditions are detected by testing or other means, the
work area shall be ventilated and otherwise made safe before entry.
(ii) An adequate continuous supply of
air shall be provided while work is performed in manholes under any of the
following conditions:
(A) Where combustible or explosive
gas vapors have been initially detected
and subsequently reduced to a safe
level by ventilation,
(B) Where organic solvents are used
in the work procedure,
(C) Where open flame torches are
used in the work procedure,
(D) Where the manhole is located in
that portion of a public right of way
open to vehicular traffic and/or exposed
to a seepage of gas or gases, or
(E) Where a toxic gas or oxygen deficiency is found.
(iii)(A) The requirements of paragraphs (o)(2) (i) and (ii) of this section
do not apply to work in central office

cable vaults that are adequately ventilated.
(B) The requirements of paragraphs
(o)(2) (i) and (ii) of this section apply to
work in unvented vaults.
(3) Joint power and telecommunication
manholes. While work is being performed in a manhole occupied jointly
by an electric utility and a telecommunication utility, an employee
with basic first aid training shall be
available in the immediate vicinity to
render emergency assistance as may be
required. The employee whose presence
is required in the immediate vicinity
for the purposes of rendering emergency assistance is not to be precluded
from occasionally entering a manhole
to provide assistance other than in an
emergency. The requirement of this
paragraph (o)(3) does not preclude a
qualified employee, working alone,
from entering for brief periods of time,
a manhole where energized cables or
equipment are in service, for the purpose of inspection, housekeeping, taking readings, or similar work if such
work can be performed safely.
(4) Ladders. Ladders shall be used to
enter and exit manholes exceeding 4
feet in depth.
(5) Flames. When open flames are used
in manholes, the following precautions
shall be taken to protect against the
accumulation of combustible gas:
(i) A test for combustible gas shall be
made immediately before using the
open flame device, and at least once
per hour while using the device; and
(ii) a fuel tank (e.g., acetylene) may
not be in the manhole unless in actual
use.
(p) Microwave transmission—(1) Eye
protection. Employers shall insure that
employees do not look into an open
waveguide which is connected to an energized source of microwave radiation.
(2) Hazardous area. Accessible areas
associated with microwave communication systems where the electromagnetic radiation level exceeds the
radiation protection guide given in
§ 1910.97 shall be posted as described in
that section. The lower half of the
warning symbol shall include the following:

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Radiation in this area may exceed hazard
limitations and special precautions are required. Obtain specific instruction before entering.

(3) Protective measures. When an employee works in an area where the electromagnetic radiation exceeds the radiation protection guide, the employer
shall institute measures that insure
that the employee’s exposure is not
greater than that permitted by the radiation guide. Such measures shall include, but not be limited to those of an
administrative or engineering nature
or those involving personal protective
equipment.
(q) Tree trimming—electrical hazards—
(1) General. (i) Employees engaged in
pruning, trimming, removing, or clearing trees from lines shall be required to
consider all overhead and underground
electrical power conductors to be energized with potentially fatal voltages,
never to be touched (contacted) either
directly or indirectly.
(ii) Employees engaged in line-clearing operations shall be instructed that:
(A) A direct contact is made when
any part of the body touches or contacts an energized conductor, or other
energized electrical fixture or apparatus.
(B) An indirect contact is made when
any part of the body touches any object in contact with an energized electrical conductor, or other energized fixture or apparatus.
(C) An indirect contact can be made
through
conductive
tools,
tree
branches, trucks, equipment, or other
objects, or as a result of communications wires, cables, fences, or guy wires
being accidentally energized.
(D) Electric shock will occur when an
employee, by either direct or indirect
contact with an energized conductor,
energized tree limb, tool, equipment,
or other object, provides a path for the
flow of electricity to a grounded object
or to the ground itself. Simultaneous
contact with two energized conductors
will also cause electric shock which
may result in serious or fatal injury.
(iii) Before any work is performed in
proximity to energized conductors, the
system operator/owner of the energized
conductors shall be contacted to ascertain if he knows of any hazards associated with the conductors which may

§ 1910.268

not be readily apparent. This rule does
not apply when operations are performed by or on behalf of, the system
operator/owner.
(2) Working in proximity to electrical
hazards. (i) Employers shall ensure
that a close inspection is made by the
employee and by the foremen or supervisor in charge before climbing, entering, or working around any tree, to determine whether an electrical power
conductor passes through the tree, or
passes within reaching distance of an
employee working in the tree. If any of
these conditions exist either directly
or indirectly, an electrical hazard shall
be considered to exist unless the system operator/owner has caused the hazard to be removed by deenergizing the
lines, or installing protective equipment.
(ii) Only qualified employees or
trainees, familiar with the special
techniques and hazards involved in line
clearance, shall be permitted to perform the work if it is found that an
electrical hazard exists.
(iii) During all tree working operations aloft where an electrical hazard
of more than 750V exists, there shall be
a second employee or trainee qualified
in line clearance tree trimming within
normal voice communication.
(iv) Where tree work is performed by
employees qualified in line-clearance
tree trimming and trainees qualified in
line-clearance tree trimming, the
clearances from energized conductors
given in Table R–3 shall apply.
TABLE R–3—MINIMUM WORKING DISTANCES
FROM ENERGIZED CONDUCTORS FOR LINECLEARANCE TREE TRIMMERS AND LINECLEARANCE TREE-TRIMMER TRAINEES
Voltage range (phase to phase) (kilovolts)
2.1 to 15.0 ........................................................
15.1 to 35.0 ......................................................
35.1 to 46.0 ......................................................
46.1 to 72.5 ......................................................
72.6 to 121.0 ....................................................
138.0 to 145.0 ..................................................
161.0 to 169.0 ..................................................
230.0 to 242.0 ..................................................
345.0 to 362.0 ..................................................
500.0 to 552.0 ..................................................
700.0 to 765.0 ..................................................

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Minimum
working distance
2 ft. 0 in.
2 ft. 4 in.
2 ft. 6 in.
3 ft. 0 in.
3 ft. 4 in.
3 ft. 6 in.
3 ft. 8 in.
5 ft. 0 in.
7 ft. 0 in.
11 ft. 0 in.
15 ft. 0 in.

rmajette on DSK29S0YB1PROD with CFR

§ 1910.268

29 CFR Ch. XVII (7–1–10 Edition)

(v) Branches hanging on an energized
conductor may only be removed using
appropriately insulated equipment.
(vi) Rubber footwear, including
lineman’s overshoes, shall not be considered as providing any measure of
safety from electrical hazards.
(vii) Ladders, platforms, and aerial
devices, including insulated aerial devices, may not be brought in contact
with an electrical conductor. Reliance
shall not be placed on their dielectric
capabilities.
(viii) When an aerial lift device contacts an electrical conductor, the truck
supporting the aerial lift device shall
be considered as energized.
(3) Storm work and emergency conditions. (i) Since storm work and emergency conditions create special hazards, only authorized representatives
of the electric utility system operator/
owner and not telecommunication
workers may perform tree work in
these situations where energized electrical power conductors are involved.
(ii) When an emergency condition develops due to tree operations, work
shall be suspended and the system operator/owner shall be notified immediately.
(r) Buried facilities—Communications
lines and power lines in the same trench.
[Reserved]
(s) Definitions—(1) Aerial lifts. Aerial
lifts include the following types of vehicle-mounted aerial devices used to
elevate personnel to jobsites above
ground:
(i) Extensible boom platforms,
(ii) Aerial ladders,
(iii) Articulating boom platforms,
(iv) Vertical towers,
(v) A combination of any of the above
defined in ANSI A92.2–1969, which is incorporated by reference as specified in
§ 1910.6. These devices are made of
metal, wood, fiberglass reinforced plastic (FRP), or other material; are powered or manually operated; and are
deemed to be aerial lifts whether or not
they are capable of rotating about a
substantially vertical axis.
(2) Aerial splicing platform. This consists of a platform, approximately 3 ft.
× 4 ft., used to perform aerial cable
work. It is furnished with fiber or synthetic ropes for supporting the platform from aerial strand, detachable

guy ropes for anchoring it, and a device
for raising and lowering it with a
handline.
(3) Aerial tent. A small tent usually
constructed of vinyl coated canvas
which is usually supported by light
metal or plastic tubing. It is designed
to protect employees in inclement
weather while working on ladders, aerial splicing platforms, or aerial devices.
(4) Alive or live (energized). Electrically connected to a source of potential difference, or electrically charged
so as to have a potential significantly
different from that of the earth in the
vicinity. The term live is sometimes
used in the place of the term currentcarrying, where the intent is clear, to
avoid repetition of the longer term.
(5) Barricade. A physical obstruction
such as tapes, cones, or ‘‘A’’ frame type
wood and/or metal structure intended
to warn and limit access to a work
area.
(6) Barrier. A physical obstruction
which is intended to prevent contact
with energized lines or equipment, or
to prevent unauthorized access to work
area.
(7) Bond. An electrical connection
from one conductive element to another for the purpose of minimizing potential differences or providing suitable conductivity for fault current or
for mitigation of leakage current and
electrolytic action.
(8) Cable. A conductor with insulation, or a stranded conductor with or
without insulation and other coverings
(single-conductor cable), or a combination of conductors insulated from one
another (multiple-conductor cable).
(9) Cable sheath. A protective covering applied to cables.
NOTE: A cable sheath may consist of multiple layers of which one or more is conductive.

(10) Circuit. A conductor or system of
conductors through which an electric
current is intended to flow.
(11) Communication lines. The conductors and their supporting or containing
structures for telephone, telegraph,
railroad signal, data, clock, fire, police-alarm, community television antenna and other systems which are
used for public or private signal or

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rmajette on DSK29S0YB1PROD with CFR

Occupational Safety and Health Admin., Labor
communication service, and which operate at potentials not exceeding 400
volts to ground or 750 volts between
any two points of the circuit, and the
transmitted power of which does not
exceed 150 watts. When communications lines operate at less than 150
volts to ground, no limit is placed on
the capacity of the system. Specifically designed communications cables
may include communication circuits
not complying with the preceding limitations, where such circuits are also
used incidentally to supply power to
communication equipment.
(12) Conductor. A material, usually in
the form of a wire, cable, or bus bar,
suitable for carrying an electric current.
(13)
Effectively
grounded.
Intentionally connected to earth through a
ground connection or connections of
sufficiently low impedance and having
sufficient current-carrying capacity to
prevent the build-up of voltages which
may result in undue hazard to connected equipment or to persons.
(14) Equipment. A general term which
includes materials, fittings, devices,
appliances, fixtures, apparatus, and
similar items used as part of, or in connection with, a supply or communications installation.
(15) Ground (reference). That conductive body, usually earth, to which an
electric potential is referenced.
(16) Ground (as a noun). A conductive
connection, whether intentional or accidental, by which an electric circuit
or equipment is connected to reference
ground.
(17) Ground (as a verb). The connecting or establishment of a connection, whether by intention or accident,
of an electric circuit or equipment to
reference ground.
(18) Ground tent. A small tent usually
constructed of vinyl coated canvas supported by a metal or plastic frame. Its
purpose is to protect employees from
inclement weather while working at
buried cable pedestal sites or similar
locations.
(19) Grounded conductor. A system or
circuit conductor which is intentionally grounded.
(20) Grounded systems. A system of
conductors in which at least one conductor or point (usually the middle

§ 1910.268

wire, or the neutral point of transformer or generator windings) is intentionally grounded, either solidly or
through a current-limiting device (not
a current-interrupting device).
(21) Grounding electrode conductor.
(Grounding conductor). A conductor
used to connect equipment or the
grounded circuit of a wiring system to
a grounding electrode.
(22) Insulated. Separated from other
conducting surfaces by a dielectric substance (including air space) offering a
high resistance to the passage of current.
NOTE: When any object is said to be insulated, it is understood to be insulated in
suitable manner for the conditions to which
it is subjected. Otherwise, it is, within the
purpose of these rules, uninsulated. Insulating coverings of conductors in one means
of making the conductor insulated.

(23) Insulation (as applied to cable).
That which is relied upon to insulate
the conductor from other conductors or
conducting parts or from ground.
(24) Joint use. The sharing of a common facility, such as a manhole, trench
or pole, by two or more different kinds
of utilities (e.g., power and telecommunications).
(25) Ladder platform. A device designed to facilitate working aloft from
an extension ladder. A typical device
consists of a platform (approximately
9″ × 18″) hinged to a welded pipe frame.
The rear edge of the platform and the
bottom cross-member of the frame are
equipped with latches to lock the platform to ladder rungs.
(26) Ladder seat. A removable seat
used to facilitate work at an elevated
position on rolling ladders in telecommunication centers.
(27) Manhole. A subsurface enclosure
which personnel may enter and which
is used for the purpose of installing, operating, and maintaining submersible
equipment and/or cable.
(28) Manhole platform. A platform
consisting of separate planks which are
laid across steel platform supports. The
ends of the supports are engaged in the
manhole cable racks.
(29) Microwave transmission. The act
of communicating or signaling utilizing a frequency between 1 GHz
(gigahertz) and 300 GHz inclusively.

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§ 1910.268

29 CFR Ch. XVII (7–1–10 Edition)

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(30) Nominal voltage. The nominal
voltage of a system or circuit is the
value assigned to a system or circuit of
a given voltage class for the purpose of
convenient designation. The actual
voltage may vary above or below this
value.
(31) Pole balcony or seat. A balcony or
seat used as a support for workmen at
pole-mounted equipment or terminal
boxes. A typical device consists of a
bolted assembly of steel details and a
wooden platform. Steel braces run from
the pole to the underside of the balcony. A guard rail (approximately 30″
high) may be provided.
(32) Pole platform. A platform intended for use by a workman in splicing and maintenance operations in an
elevated position adjacent to a pole. It
consists of a platform equipped at one
end with a hinged chain binder for securing the platform to a pole. A brace
from the pole to the underside of the
platform is also provided.
(33) Qualified employee. Any worker
who by reason of his training and experience has demonstrated his ability to
safely perform his duties.
(34) Qualified line-clearance tree trimmer. A tree worker who through related
training and on-the-job experience is
familar with the special techniques and
hazards involved in line clearance.
(35) Qualified line-clearance tree-trimmer trainee. Any worker regularly assigned to a line-clearance tree-trimming crew and undergoing on-the-job
training who, in the course of such
training, has demonstrated his ability
to perform his duties safely at his level
of training.
(36) System operator/owner. The person
or organization that operates or controls the electrical conductors involved.
(37) Telecommunications center. An installation of communication equipment under the exclusive control of an
organization providing telecommunications service, that is located outdoors or in a vault, chamber, or a
building space used primarily for such
installations.
NOTE: Telecommunication centers are facilities established, equipped and arranged in
accordance with engineered plans for the
purpose of providing telecommunications
service. They may be located on premises

owned or leased by the organization providing telecommunication service, or on the
premises owned or leased by others. This definition includes switch rooms (whether
electromechanical, electronic, or computer
controlled), terminal rooms, power rooms,
repeater rooms, transmitter and receiver
rooms, switchboard operating rooms, cable
vaults, and miscellaneous communications
equipment rooms. Simulation rooms of telecommunication centers for training or developmental purposes are also included.

(38) Telecommunications derricks. Rotating or nonrotating derrick structures permanently mounted on vehicles
for the purpose of lifting, lowering, or
positioning hardware and materials
used in telecommunications work.
(39) Telecommunication line truck. A
truck used to transport men, tools, and
material, and to serve as a traveling
workshop for telecommunication installation and maintenance work. It is
sometimes equipped with a boom and
auxiliary equipment for setting poles,
digging holes, and elevating material
or men.
(40) Telecommunication service. The
furnishing of a capability to signal or
communicate at a distance by means
such as telephone, telegraph, police
and firealarm, community antenna television, or similar system, using wire,
conventional cable, coaxial cable, wave
guides, microwave transmission, or
other similar means.
(41) Unvented vault. An enclosed vault
in which the only openings are access
openings.
(42) Vault. An enclosure above or
below ground which personnel may
enter, and which is used for the purpose of installing, operating, and/or
maintaining equipment and/or cable
which need not be of submersible design.
(43) Vented vault. An enclosure as described in paragraph(s) (42) of this section, with provision for air changes
using exhaust flue stack(s) and low
level air intake(s), operating on differentials of pressure and temperature
providing for air flow.
(44) Voltage of an effectively grounded
circuit. The voltage between any conductor and ground unless otherwise indicated.
(45) Voltage of a circuit not effectively
grounded. The voltage between any two
conductors. If one circuit is directly

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Occupational Safety and Health Admin., Labor
connected to and supplied from another
circuit of higher voltage (as in the case
of an autotransformer), both are considered as of the higher voltage, unless
the circuit of lower voltage is effectively grounded, in which case its voltage is not determined by the circuit of
higher voltage. Direct connection implies electric connection as distinguished
from
connection
merely
through electromagnetic or electrostatic induction.
[40 FR 13441, Mar. 26, 1975, as amended at 43
FR 49751, Oct. 24, 1978; 47 FR 14706, Apr. 6,
1982; 52 FR 36387, Sept. 28, 1987; 54 FR 24334,
June 7, 1989; 61 FR 9242, Mar. 7, 1996; 63 FR
33467, June 18, 1998; 67 FR 67965, Nov. 7, 2002;
69 FR 31882, June 8, 2004; 70 FR 1141, Jan. 5,
2005]

§ 1910.269 Electric power generation,
transmission, and distribution.
NOTE: OSHA is staying the enforcement of
the following paragraphs of § 1910.269 until
November 1, 1994: (b)(1)(ii), (d) except for
(d)(2)(i) and (d)(2)(iii), (e)(2), (e)(3), (j)(2)(iii),
(l)(6)(iii), (m), (n)(3), (n)(4)(ii), (n)(8), (o) except for (o)(2)(i), (r)(1)(vi), (u)(1), (u)(4), (u)(5).
OSHA is also staying the enforcement of
paragraphs (n)(6) and (n)(7) of § 1910.269 until
November 1, 1994, but only insofar as they
apply to lines and equipment operated at 600
volts or less. Further, OSHA is staying the
enforcement of paragraph (v)(11)(xii) of
§ 1910.269 until Februrary 1, 1996.

rmajette on DSK29S0YB1PROD with CFR

(a) General—(1) Application. (i) This
section covers the operation and maintenance of electric power generation,
control, transformation, transmission,
and distribution lines and equipment.
These provisions apply to:
(A) Power generation, transmission,
and distribution installations, including related equipment for the purpose
of communication or metering, which
are accessible only to qualified employees;
NOTE: The types of installations covered by
this paragraph include the generation, transmission, and distribution installations of
electric utilities, as well as equivalent installations of industrial establishments.
Supplementary electric generating equipment that is used to supply a workplace for
emergency, standby, or similar purposes
only is covered under subpart S of this part.
(See paragraph (a)(1)(ii)(B) of this section.)

(B) Other installations at an electric
power generating station, as follows:

§ 1910.269

(1) Fuel and ash handling and processing installations, such as coal conveyors,
(2) Water and steam installations,
such as penstocks, pipelines, and
tanks, providing a source of energy for
electric generators, and
(3) Chlorine and hydrogen systems;
(C) Test sites where electrical testing
involving temporary measurements associated with electric power generation, transmission, and distribution is
performed in laboratories, in the field,
in substations, and on lines, as opposed
to metering, relaying, and routine line
work;
(D) Work on or directly associated
with the installations covered in paragraphs (a)(1)(i)(A) through (a)(1)(i)(C) of
this section; and
(E) Line-clearance tree-trimming operations, as follows:
(1) Entire § 1910.269 of this part, except paragraph (r)(1) of this section, applies to line-clearance tree-trimming
operations performed by qualified employees (those who are knowledgeable
in the construction and operation of
electric
power
generation,
transmission, or distribution equipment involved, along with the associated hazards).
(2) Paragraphs (a)(2), (b), (c), (g), (k),
(p), and (r) of this section apply to lineclearance tree-trimming operations
performed by line-clearance tree trimmers who are not qualified employees.
(ii)
Notwithstanding
paragraph
(a)(1)(i) of this section, § 1910.269 of this
part does not apply:
(A) To construction work, as defined
in § 1910.12 of this part; or
(B) To electrical installations, electrical safety-related work practices, or
electrical maintenance considerations
covered by subpart S of this part.
NOTE 1: Work practices conforming to
§§ 1910.332 through 1910.335 of this part are
considered as complying with the electrical
safety-related work practice requirements of
this section identified in Table 1 of appendix
A–2 to this section, provided the work is
being performed on a generation or distribution installation meeting §§ 1910.303 through
1910.308 of this part. This table also identifies
provisions in this section that apply to work
by qualified persons directly on or associated
with installations of electric power generation, transmission, and distribution lines or

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