(d)(5)
"Environmental conditions." All work shall terminate and each employee shall
move to a place of safety when environmental conditions, such as but not limited to,
electrical storms, strong winds which may affect the fall of a tree, heavy rain or snow,
extreme cold, dense fog, fires, mudslides, and darkness, create a hazard for the employee
in the performance of the job.
(d)(6) "Work areas."
(d)(6)(i) Employees shall be spaced and the duties of each employee shall be organized
so the actions of one employee will not create a hazard for any other employee.
(d)(6)(ii) Work areas shall be assigned so that trees cannot fall into an adjacent
occupied work area. The distance between adjacent occupied work areas shall be at least
two tree lengths of the trees being felled. The distance between adjacent occupied work
areas shall reflect the degree of slope, the density of the growth, the height of the
trees, the soil structure and other hazards reasonably anticipated at that work site. A
distance of greater than two tree lengths shall be maintained between adjacent occupied
work areas on any slope where rolling or sliding of trees or logs is reasonably
foreseeable.
(d)(6)(iii) Each employee performing a logging operation at a logging work site shall
work in a position or location that is within visual or audible contact with another
employee.
(d)(6)(iv) The employer shall account for each employee at the end of each workshift.
(d)(8) "Overhead electric lines."
(d)(8)(i) Logging operations near overhead electric lines shall be done in accordance
with the requirements of 29 CFR 1910.333(c)(3).
(d)(8)(ii) The employer shall notify the power company immediately if a felled tree
makes contact with any power line. Each employee shall remain clear of the area until the
power company advises that there are no electrical hazards.
(h) "Tree harvesting."
(h)(1) "General requirements."
(h)(1)(i) Trees shall not be felled in a manner that may create a hazard for an
employee, such as but not limited to, striking a rope, cable, power line, or machine.
(h)(1)(ii) The immediate supervisor shall be consulted when unfamiliar or unusually
hazardous conditions necessitate the supervisor's approval before cutting is commenced.
(h)(1)(iii) While manual felling is in progress, no yarding machine shall be operated
within two tree lengths of trees being manually felled. Exception: This provision does not
apply to yarding machines performing tree pulling operations.
(h)(1)(iv) No employee shall approach a feller closer than two tree lengths of trees
being felled until the feller has acknowledged that it is safe to do so, unless the
employer demonstrates that a team of employees is necessary to manually fell a particular
tree.
(h)(1)(v) No employee shall approach a mechanical felling operation closer than two
tree lengths of the trees being felled until the machine operator has acknowledged that it
is safe to do so.
(h)(1)(vi) Each danger tree shall be felled, removed or avoided. Each danger tree,
including lodged trees and snags, shall be felled or removed using mechanical or other
techniques that minimize employee exposure before work is commenced in the area of the
danger tree. If the danger tree is not felled or removed, it shall be marked and no work
shall be conducted within two tree lengths of the danger tree unless the employer
demonstrates that a shorter distance will not create a hazard for an employee.
(h)(1)(vii) Each danger tree shall be carefully checked for signs of loose bark, broken
branches and limbs or other damage before they are felled or removed. Accessible loose
bark and other damage that may create a hazard for an employee shall be removed or held in
place before felling or removing the tree.
(h)(1)(viii) Felling on any slope where rolling or sliding of trees or logs is
reasonably foreseeable shall be done uphill from, or on the same level as, previously
felled trees.
(h)(1)(ix) Domino felling of trees is prohibited.
Note to paragraph (h)(1)(ix): The definition of domino felling does not include
the felling of a single danger tree by felling another single tree into it.
..1910.333(c)(3)
(c)(3) "Overhead lines." if work is to be performed near overhead
lines, the lines shall be deenergized and grounded, or other protective measures shall be
provided before work is started. If the lines are to be deenergized, arrangements shall be
made with the person or organization that operates or controls the electric circuits
involved to deenergize and ground them. If protective measures, such as guarding,
isolating, or insulating, are provided, these precautions shall prevent employees from
contacting such lines directly with any part of their body or indirectly through
conductive materials, tools, or equipment.
Note: The work practices used by qualified persons installing insulating devices on
overhead power transmission or distribution lines are covered by 1910.269 of this Part,
not by 1910.332 through 1910.335 of this Part. Under paragraph (c)(2) of this section,
unqualified persons are prohibited from performing this type of work.
(c)(3)(i) "Unqualified persons."
(c)(3)(i)(A) When an unqualified person is working in an elevated position near
overhead lines, the location shall be such that the person and the longest conductive
object he or she may contact cannot come closer to any unguarded, energized overhead line
than the following distances:
(c)(3)(i)(A)(1) For voltages to ground 50kV or below - 10 feet (305 cm);
(c)(3)(i)(A)(2) For voltages to ground over 50kV - 10 feet (305 cm) plus 4 inches (10
cm) for every 10kV over 50kV.
(c)(3)(i)(B) When an unqualified person is working on the ground in the vicinity
of overhead lines, the person may not bring any conductive object closer to unguarded,
energized overhead lines than the distances given in paragraph (c)(3)(i)(A) of this
section.
Note: For voltages normally encountered with overhead power line, objects which do not
have an insulating rating for the voltage involved are considered to be conductive.
(c)(3)(ii) "Qualified persons." When a qualified person is working in
the vicinity of overhead lines, whether in an elevated position or on the ground, the
person may not approach or take any conductive object without an approved insulating
handle closer to exposed energized parts than shown in Table S-5 unless:
(c)(3)(ii)(A) The person is insulated from the energized part (gloves, with
sleeves if necessary, rated for the voltage involved are considered to be insulation of
the person from the energized part on which work is performed), or
(c)(3)(ii)(B) The energized part is insulated both from all other conductive
objects at a different potential and from the person, or
(c)(3)(ii)(C) The person is insulated from all conductive objects at a potential
different from that of the energized part.
TABLE S-5 - APPROACH DISTANCES FOR QUALIFIED
EMPLOYEES - ALTERNATING CURRENT
______________________________________________________________
|
Voltage range (phase to phase) | Minimum approach distance
__________________________________|___________________________
|
300V and less ....................| Avoid Contact
Over 300V, not over 750V .........| 1 ft. 0 in. (30.5 cm).
Over 750V, not over 2kV ..........| 1 ft. 6 in. (46 cm).
Over 2kV, not over 15kV ..........| 2 ft. 0 in. (61 cm).
Over 15kV, not over 37kV .........| 3 ft. 0 in. (91 cm).
Over 37kV, not over 87.5kV .......| 3 ft. 6 in. (107 cm).
Over 87.5kV, not over 121kV ......| 4 ft. 0 in. (122 cm).
Over 121kV, not over 140kV .......| 4 ft. 6 in. (137 cm).
__________________________________|___________________________