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WARNING |
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Loads
may disengage from hook if proper procedures are
not followed.
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A
falling load may cause serious injury or death.
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See
OSHA Rule 1926.555(g) for personnel hoisting by
cranes and derricks, and OSHA Directive CPL 2-1.29
- Interim Inspection Procedures During Communication
Tower Construction Activities. A Crosby 319, 320
or 322 hook with a PL latch attached and secured
with a bolt, nut and cotter pin (or toggle pin)
may be used for lifting personnel. A Crosby 319N,
320N or 322N hook with an S-4320 latch attached
and secured with cotter pin or bolt, nut and pin;
or a PL-N latch attached and secured with toggle
pin may be used for lifting personnel. A hook with
a Crosby SS-4055 latch attached shall NOT be used
for personnel lifting.
- See
OSHA Directive CPS 2-1.29 - Crosby does not recommend
the placement of lanyards directly into the positive
locking Crosby hook when hoisting personnel. Crosby
requires that all suspension systems (vertical lifelines/lanyard))
shall be gathered at the positive locked load hook
by use of a master link, or a bolt-type shackle secured
with cotter pin.
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Threads
may corrode and/or strip and drop the load.
- Remove
securement nut to inspect or to replace S-322 bearing
washers (2).
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Hook
must always support the load. The load must
never be supported by the latch.
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Never
apply more force than the hook’s assigned Working
Load Limit (WLL) rating.
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Read
and understand these instructions before using hook.
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ZONE
A: REPAIR NOT REQUIRED
ZONE B: 10% OF ORIGINAL DIMENSION
ZONE C: 5% OF ORIGINAL DIMENSION
ZONE D: SEE MINIMUM THREAD SIZE
CHART |
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Figure 1
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Side Load |
Back Load
Wrong |
Tip Load |
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Figure 2
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Right |
Wrong |
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| Figure 3 |
Figure 4 |
Figure 5 |
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Important
Safety Information -
Read and Follow |
- A visual periodic inspection
for cracks, nicks, wear, gouges and deformation as part of a comprehensive
documented inspection program, should be conducted by trained personnel
in compliance with the schedule in ANSI B30. 10.
- For hooks used in frequent
load cycles or pulsating loads, the hook and threads should be periodically
inspected by Magnetic Particle or Dye Penetrant. (Note: Some
disassembly may be required.)
- Never use a hook whose
throat opening has been increased, or whose tip has been bent more
than 10 degrees out of plane from the hook body, or is in any other
way distorted or bent. Note: A latch will not work properly
on a hook with a bent or worn tip.
- Never use a hook that
is worn beyond the limits shown in Figure 1.
- Remove from service
any hook with a crack, nick, or gouge. Hooks with a crack, nick, or
gouge shall be repaired by grinding lengthwise, following the contour
of the hook, provided that the reduced dimension is within the limits
shown in Figure 1.
- Never repair, alter,
rework, or reshape a hook by welding, heating, burning, or bending.
- Never side load, back
load, or tip load a hook. (See Figure 2.)
- Eye hooks, shank hooks
and swivel hooks are designed to be used with wire rope or chain.
Efficiency of assembly may be reduced when used with synthetic material.
- Do not swivel the S-322
swivel hook while it is supporting a load.
- The use of a latch may
be mandatory by regulations or safety codes; e.g., OSHA, MSHA, ANSI/ASME
B30, Insurance, etc.. (Note: When using latches, see instructions
in “Understanding: The Crosby Group Warnings” for further
information.)
- Always make sure the
hook supports the load. (See Figure 3). The latch must never support
the load (See Figure 4).
- When placing two (2)
sling legs in hook, make sure the angle from the vertical to the outermost
leg is not greater than 45 degrees, and the included angle between
the legs does not exceed 90 degrees* (See Figure 5).
- See ANSI/ASME B30.10
“Hooks” for additional information.
* For angles
greater than 90 degrees, or more than two (2) legs, a master link or
bolt type anchor shackle should be used to attach the legs of the sling
to the hook. |
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