NSTM Chapter 573, Booms Flashcards
(39 cards)
Boom loads shall never be suspended over ___
Personnel
SWL
Safe working load
Any load within 10 percent of the SWL, or any oblong or oversize loads
Heavy lift
All heavy lifting operations shall be under the direct supervision of the ___
1LT or weapons officer
___ shall be used during all heavy lifts
Tag lines
Operators shall not leave the winch controls with ___
A load suspended in the rig
Never stand between a load and a ___
Fixed object
___ shall be employed to assist an operator who cannot see
Signalman or winch tender
Communication between the signalman and winch operator is achieved through the use of ___
Standard hand signals
Never turn your back on a ___
Moving or suspended load
A triangular steel plate with holes in the corners used to connect the topping lift wire, the bull chain, and the bull line
Bale
The ___ is shackled to the top hole in the bale, and the ___ are shackled to the bottom two holes
Topping lift wire
Bull chain and bull line
Structural member used for lifting, transferring, or supporting heavy weights aboard ship
Boom
Three parts of a boom
Gooseneck
Linkband
Slack wire fair-lead
Sheave assembly containing one or more sheave wheels which is used to fairlead wire or rope
Block
Blocks are often described in terms of ___
Their location in the system
Used to hold the boom at its desired working angle
Bull chain
Bull chain is normally made of ___
1 - 1/4” heavy duty open link chain
Wire of considerable length, shackled to the lower corner of the bale and used as the hauling part of a topping lift
Bull line
Winch power is used to raise and lower the boom by taking the bull line from its cleat to the ___
Gypsy head or drum
Curved or angular piece of metal or other suitable device for pulling, lifting, lowering, or suspending loads
Cargo hook
The assembly that is used to connect a boom to the ship structure
Gooseneck
Any wire, line, or block and tackle assembly that provides athwartship support or motion for a boom head or the head of a gin pole
Guy
An apparatus used for lifting and supporting heavy loads
Hoist