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29CFR_V5_p773-p773 763
Occupational Safety and Health Admin., Labor
§ 1910.269
enter, and which is used for the pur-
pose of installing, operating, and/or
maintaining equipment and/or cable
which need not be of submersible de-
sign.
(43)
Vented vault. An enclosure as de-
scribed in paragraph(s) (42) of this sec-
tion, with provision for air changes
using exhaust flue stack(s) and low
level air intake(s), operating on dif-
ferentials of pressure and temperature
providing for air flow.
(44)
Voltage of an effectively grounded
circuit. The voltage between any con-
ductor and ground unless otherwise in-
dicated.
(45)
Voltage of a circuit not effectively
grounded. The voltage between any two
conductors. If one circuit is directly
connected to and supplied from another
circuit of higher voltage (as in the case
of an autotransformer), both are con-
sidered as of the higher voltage, unless
the circuit of lower voltage is effec-
tively grounded, in which case its volt-
age is not determined by the circuit of
higher voltage. Direct connection im-
plies electric connection as distin-
guished from connection merely
through electromagnetic or electro-
static 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.
N
OTE
: 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) ex-
cept 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.
(a)
General(1) Application. (i) This
section covers the operation and main-
tenance of electric power generation,
control, transformation, transmission,
and distribution lines and equipment.
These provisions apply to:
(A) Power generation, transmission,
and distribution installations, includ-
ing related equipment for the purpose
of communication or metering, which
are accessible only to qualified employ-
ees;
N
OTE
: The types of installations covered by
this paragraph include the generation, trans-
mission, and distribution installations of
electric utilities, as well as equivalent in-
stallations of industrial establishments.
Supplementary electric generating equip-
ment 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:
(
1) Fuel and ash handling and proc-
essing installations, such as coal con-
veyors,
(
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 as-
sociated with electric power genera-
tion, 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 para-
graphs (a)(1)(i)(A) through (a)(1)(i)(C) of
this section; and
(E) Line-clearance tree-trimming op-
erations, as follows:
(
1) Entire § 1910.269 of this part, ex-
cept paragraph (r)(1) of this section, ap-
plies to line-clearance tree-trimming
operations performed by qualified em-
ployees (those who are knowledgeable
in the construction and operation of
electric power generation, trans-
mission, or distribution equipment in-
volved, along with the associated haz-
ards).
(
2) Paragraphs (a)(2), (b), (c), (g), (k),
(p), and (r) of this section apply to line-
clearance tree-trimming operations
performed by line-clearance tree trim-
mers who are not qualified employees.
(ii) Notwithstanding paragraph
(a)(1)(i) of this section, § 1910.269 of this
part does not apply:
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