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NCCCO Core Exam Outline Questions and Answers

Timber or steel - ANSWER-These materials should be used when setting up on soft surfaces such as soft ground, asphalt or backfilled material Over the corner - ANSWER-On crawler cranes, which boom position creates the greatest ground pressure Blocking - ANSWER-Allows the weight of the crane and load to be distributed over a greater surface area. Should be used under outrigger floats at all times.

• - ANSWER-Blocking should be at least how many times the surface area of the

float Energized - ANSWER-Overhead power lines must be considered to be in this condition until electrical authorities indicate otherwise Prohibited zone - ANSWER-No part of the crane or load must ever enter this area around an energized power line kV - ANSWER-The prohibited zone must be enlarged as this increases 1 / 2

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20 foot - ANSWER-What minimum distance does OSHA require be maintained when voltage up to 350 kV is unknown 50 foot - ANSWER-What minimum distance is required if the voltage is over 350 kV and unknown Qualified signal person - ANSWER-This person must be appointed any time the crane is working within a boom's length of the prohibited zone Tag lines - ANSWER-The use of these should be avoided when lifting near power lines, however if necessary should be non-conductive type Above power lines - ANSWER-Avoid operating cranes or handling materials in this area of power lines Remain in the cab - ANSWER-What does an operator do if the crane comes in contact with a power line Jump - ANSWER-If it is necessary to leave the crane cab before power lines are de-energized after contact, how does the operator exit the cab transmission towers - ANSWER-A crane can also become electrically charged when working close to these (radio, microwave, cell) Manufacturer - ANSWER-Before traveling on site with a load, be sure that this is allowed by the

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