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>> Lumber Storage |
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Lumber Sorting, Stacking, and Piling
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Hazard/Solutions:
Workers may be struck or crushed by lumber due
to unintentional movement of the pile.
- In stacking units of lumber, pile foundations must be designed and arranged to support maximum loads without sinking,
sagging, or permitting the piles to topple. In unit package piles,
substantial bolsters or unit separators must be placed between each
package directly over the stickers.
1910.265(c)(27)(i)
- Long units of lumber may not be
stacked upon shorter packages except where a stable pile can be made
with the use of package separators. 1910.265(c)(27)(ii)
- Unit packages of lumber need to be provided with stickers as
necessary to insure stability under ordinary operating conditions. 1910.265(c)(27)(iv)
- Stickers must extend the full width of the
package, be uniformly spaced and be aligned one above the
other. Stickers may be lapped with a minimum overlapping of 12 inches.
Stickers may not protrude more than two inches beyond the sides of the
package.
1910.265(c)(27)(v)
- Piles of lumber that have become unstable must be
immediately made safe, or, the area into which they might fall must be
fenced or barricaded and employees must be prohibited from entering it. 1910.265(c)(27)(iii)
Unstable lumber pile
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Unstable lumber pile
Stable lumber pile
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- The height of unit package piles is dependent on
the dimensions of the packages and must provide stability
under normal operating conditions. Adjacent lumber piles may be tied
together with separators to increase stability. 1910.265(c)(27)(vi)
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Unstable storage
Unstable storage
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Hazard/Solutions:
Workers may be struck or crushed by moving lumber.
- Lumber lifting devices on all stackers must
be designed and arranged to minimize the possibility of lumber
falling.
1910.265(c)(26)(ii)
- Provide a means to positively
block the hoisting platform when employees must go beneath the stacker
or unstacker hoist. 1910.265(c)(26)(iii)
- Every manually operated control switch must be
properly identified readily accessible to the
operator.
1910.265(c)(26)(iv)
- The design of main control switches
must allow them to be locked in the open position.
1910.265(c)(26)(v)
- The hoistway side openings at the top level
of the stacker and unstacker must be protected by enclosures of
standard railings. 1910.265(c)(26)(vi)
- When the hoist platform or top of the
load is below the working platform, the hoistway openings must be
guarded. 1910.265(c)(26)(vii)
- The lower landing area of stackers and
unstackers must be guarded by enclosures that prevent entrance to the
area or pit below the hoist platform. Entrances should be protected by
electrically interlocked gates which, when open, will disconnect the
power and set the hoist brakes. When the interlock is not installed,
other positive means of protecting the entrance must be provided. 1910.265(c)(26)(viii)
- Every stacker and unstacker must be inspected at
frequent intervals and all defective parts must be immediately repaired
or replaced.
1910.265(c)(26)(ix)
- Safe means of entrance and exit must be provided to
permit cleaning of pits.
1910.265(c)(26)(x)
- Where the return of trucks from
unstacker to stacker is by mechanical power or gravity, adequate signs,
warning devices, or barriers must be erected to prevent entry into the
hazardous area. 1910.265(c)(26)(xi)
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Lower landing area of stacker.
Area needs barricades.
Elevated stacking table. Note the pinch
points between the table and framework.
Lower landing area power
transmission apparatus for stacker
Outfeed conveyor from lower landing
area
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Sorting gaps
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Manual green chain
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