If Boom is Off Ground
and Supported by Straps...
and there is No Blocking
Under Boom Sections...
Boom will COLLAPSE when Lower Pins are Removed!
View A
WRONG – DANGEROUS!
Handling Pendants
are Slack...
and there is No Blocking
Under Boom Sections...
Boom will COLLAPSE when Lower Pins are Removed!
View C
RIGHT – SAFE
Handling Pendants Taut
and Supporting Boom...
before Removing
Bottom Pins!
Boom Sections Lowered
and Securely Blocked!
View B
WRONG – DANGEROUS!
If Boom Point
is on Ground...
Straps Fully Lowered onto
Supports Before Removing Pins
Figure 2-4. Boom Disassembly
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