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32 Cards in this Set
- Front
- Back
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Define the term radius? |
The horizontal distance between the point at which the centre of rotation meets the ground and the vertical centre line passing through the load lifting attachment. |
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Name THREE factors that determine the safety working load of the crane? |
1. Length of the boom 2. Stability 3. Structural strength |
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According to NS7121 Part 1: a) What is the minimum number of allowable turns on the hoist drum? B) Who decides the actual minimum for a given model of Crane? |
a)Two B)The manufacturer |
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If the operator has to leave the cab of a Crane for a short period, state at least TWO actions that must be taken before they leave? |
1. Loads are removed or grounded 2. Motion brake locks applied |
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Name three way in which an operator can minimise their impact upon the environment whilst using a Crane? |
1.Efficient use 2. well maintained Crane, 3. Correct disposal of waste |
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A Tower Crane has been delivered to site, assembled and configured for lifting. What must be carried out before lifting starts and by whom? |
The crane must be INSPECTED/EXAMINED before use by an AUTHORISED competent person |
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What do The Work at Heights Regulation require of Crane Supervisors? |
Control measures in place to ensure operators are not at risk of falling |
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Name a design of accessory hook that is exempt from being fitted with a safety catch? |
A 'C' Hook (Known as a 'cargo of Liverpool' hook) |
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Why is it important to ensure the wheels are clear of the ground when outriggers are employed? |
Wheels and axles are part of the Cranes dead weight and affect the total load movement of the crane if supported by the ground |
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Two Cranes are working in the same vicinity that encroach the operating radius of each other. What action would the lift plan or method statement normally specify? |
Co-ordination of the two Cranes via the crane Supervisor or crane co-ordinator and possibly limits on slewing. |
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How is the SWL/WLL rated capacity for multi-leg slings determined? |
By the uniform load method |
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How does the deflection of the boom on a mobile crane or Jib affect the lift? |
The boom deflection can cause an increase in the radius |
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Name TWO possible penalties for not following legal requirements when using a Crane? |
1.Prosecution 2. fines 3. HSE prohibition noticed |
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What is the maximum angle that a bow shackle used as a pair on a Crane hook can be used at? |
At a maximum included angle of 90 degrees |
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Explain the purpose of the over-hoist limit switch |
The over-hoist limit switch prevents the hook block from striking the boom head and sheaves |
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What is the definition of, or how can a hazard be described? |
A hazard is a situation where there is a potential threat (or risk) to life, health, property or environment |
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How long is a thorough examination for a lifting accessory valid for? |
Six months |
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Where should the crane's Operation's Manual be kept and why? |
At a place (preferably on the machine) where the operator can have EASY/UNHINDERED ACCESS to the manual. |
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Name FOUR different types or levels of disciplinary action or sanctions that can be applied (by employers and judicial bodies) to operators of plant who do not comply with or follow legislation and regulations |
1.Verbal warning 2. written warning 3. dismissal 4. prosecution |
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What THREE main duties of The Health and Safety at Work Act must employees follow? |
In summary: A) Take reasonable care for THEMSELVES and OTHERS who may be affected by their actions. B) CO-OPERATE with the employer C) Not intentionally or recklessly INTERFERE with health and Safety issues. |
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What is the maximum recommended distance that is allowed between the counterweight(s) of the crane and another object/structure? |
A minimum of 600 mm |
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How can a qualification or card benefit a Crane Supervisor |
1. Credibility 2. Proof of skills 3. Employment prospects 4. Promotional prospects |
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What does The Health and Safety at Work Act require employers to do with regards specifically to plant? |
In summary: To PROVIDE and maintain plant that is SAFE and without risk to health |
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State SIX environmental factors that can affect an external lifting operation? |
1. Wind 2. Excessive rain 3. Fog 4. Lightning 5. Ice and snow 6. Storms |
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State the maximum recommend angle for single-leg slings when used as a pair. |
90 degrees |
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Give THREE examples of how excessive rain can affect an external lifting operation when using a mobile crane |
1. Affect visibility 2. Cause very slippery conditions 3. Excessive rain may cause the ground to soften reducing the crane support. |
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What is the FACTOR OF SAFETY when lifting personnel? |
2:1 (BS 7121) PART3 ANNEX D.3.1 |
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A. What is the purpose of a method statement ? B. What is required of the operator ? |
A. It is a document that gives specific instructions on how to SAFELY perform a work-related task B. To COMPLY with the method statement |
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If setting upto lift loads near a pedestrian area, what main factor needs to be taken into account? |
Physical segregation of predestinations from overhead loads |
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Explain the difference between and employing and user organisation? |
1. The employing organisation requires the load to be lifted and may simply hire a Crane, then plan and manage the lift themselves,2. Or enter into a contract with another party who becomes the user organisation and plan and manage the lifting operation on behalf of the employing organisation |
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A. What determines the minimum distance that any part of plant machinery has to be kept from over head electricity lines. B. Explain why a distance should be kept. |
A. The voltage of electricity line and type of support (e.g metal pylons/wooden pole). B. High voltage electricity can arc across large gaps in certain distances |
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A replacement crane driver has supplied to continue the lift. What must they be made aware of before future lifting can take place? |
The lift plan and the current situation of the lift |
