Free WSQ Supervise Safe Lifting Operations Written Assessment Practice Questions

Sample Practice Questions

Try these 10 sample questions from the WSQ Supervise Safe Lifting Operations Written Assessment practice bank. Each includes the answer and explanation. Continue with the interactive practice above to review the full question set.

1. 1A planned crane position must change because a new structure blocks the lifting route. Under the Code's lifting-plan change procedure, whose approval is required after a full review?

   1. A.The persons who approved the original Lifting PlanCorrect answer: A
   2. B.The personnel who delivered the crane to the site
   3. C.The mechanics who last maintained the lifting crane
   4. D.The suppliers who provided the rigging accessories

   Explanation: The guidance states: "Never vary from the approved Lifting Plan without another full review and final approval by the responsible persons who approved the original Lifting Plan" The changed route requires the original approving persons' approval; delivery, maintenance and supply roles do not replace that approval.

   Reference: WSH Council — Code of Practice on Safe Lifting Operations in the Workplaces — §7.7, p.19

2. 2A suspended fabrication tends to swing as it clears its supports. In a correctly balanced rigging arrangement, where should the load's centre of gravity lie relative to the hook?

   1. A.Directly beneath the hookCorrect answer: A
   2. B.Directly above the hook
   3. C.Horizontally offset from the hook
   4. D.At the same elevation as the hook

   Explanation: The Code states: "stable, balanced (centre of gravity beneath the hook)" Balanced rigging places the load centre of gravity directly beneath the hook; an offset or a centre of gravity above or level with the hook does not match that requirement.

   Reference: WSH Council — Code of Practice on Safe Lifting Operations in the Workplaces — §5.3.5.2, p.16

3. 3An inspector asks the supervisor what the crane's anti two-blocking device is intended to prevent. Which contact does it address?

   1. A.Hook block assembly contacting boom sheave assemblyCorrect answer: A
   2. B.Crane boom contacting an adjacent operating crane
   3. C.Crane counterweight contacting a nearby structure
   4. D.Crane boom contacting an overhead electrical line

   Explanation: The Code states: "an anti two-blocking device on a crawler crane prevents the hook block assembly from coming into contact with the boom sheave assembly." Two-block protection addresses the block-to-boom-head contact. Other crane/crane, structure and electrical-line contacts are collision hazards controlled by different safeguards.

   Reference: WSH Council — Code of Practice on Safe Lifting Operations in the Workplaces — §2.2.2.1, p.6

4. 4In a load-chart exercise using the GR-1450EX instructions, the applicable gross capacity is 10,000 kg. The selected hook block is 610 kg, and the slings and other handling devices total 390 kg. With no other deductions or lower limits, what is the maximum payload?

   1. A.9,000 kgCorrect answer: A
   2. B.10,000 kg
   3. C.9,390 kg
   4. D.11,000 kg

   Explanation: The chart instructions state: "The weight of handling device such as hook blocks (1,080 kg for 100 t capacity, 610 kg for 45 t capacity, 300 kg for 7.2 t capacity), slings, etc., must be considered as part of the load and must be deducted from the lifting capacities." Payload = 10,000 − 610 − 390 = 9,000 kg. Ignoring all handling gear gives 10,000 kg; subtracting the hook alone gives 9,390 kg; adding both deductions incorrectly gives 11,000 kg.

   Reference: Tadano — GR-1450EX Rated Lifting Capacities — p.16, Operation note 3

5. 5A supervisor is preparing a complex tandem lift to tilt a long structure upright. Beyond a basic lifting plan, what planning input does the Code specifically require?

   1. A.Additional equipment identification markings
   2. B.Additional engineering design effortsCorrect answer: B
   3. C.Additional periodic maintenance records
   4. D.Additional lifting-team identification clothing

   Explanation: The guidance states: "High risk or complex lifts however, requires additional engineering design efforts to ensure that the lifting is conducted safely." Complexity calls for engineering design. Markings, maintenance records and identification clothing have other safety functions.

   Reference: WSH Council — Code of Practice on Safe Lifting Operations in the Workplaces — §7.1, p.18

6. 6A rigger must protect a sling where it crosses sharp load edges. Which item does the handbook specify for that protection?

   1. A.A master link
   2. B.Adequate paddingCorrect answer: B
   3. C.A shackle
   4. D.A tag line

   Explanation: The handbook states: "Place adequate paddings on the edges of the load to prevent the sling from damage." Padding protects the sling at the edge. Master links and shackles connect gear; tag lines control load movement.

   Reference: WSH Council — Worker's Safety Handbook for Rigger and Signalman — §8, p.11

7. 7A crane's hoisting brakes fail while supporting a suspended load. Which immediate motion does the Code identify as the consequence?

   1. A.Uncommanded slewing of the crane
   2. B.Unintended free-fall of the loadCorrect answer: B
   3. C.Uncommanded extension of the boom
   4. D.Unintended travel of the crane

   Explanation: The Code states: "Any failure in the brakes will result in an unintended free-fall of the suspended load." The hoisting brake restrains the vertical suspended load; slew, telescope and travel are different motions.

   Reference: WSH Council — Code of Practice on Safe Lifting Operations in the Workplaces — §2.2.2.1, p.6

8. 8For a GR-1450EX load-chart exercise, the actual boom length lies between two listed lengths. At the same radius, their rated capacities are 8,000 kg and 7,000 kg. Which gross capacity must be used under the chart's interpolation rule?

   1. A.8,000 kg
   2. B.7,000 kgCorrect answer: B
   3. C.7,500 kg
   4. D.15,000 kg

   Explanation: The chart instructions state: "The lesser of the two rated lifting capacities shall be used." Compare the two applicable ratings: min(8,000, 7,000) = 7,000 kg. Selecting 8,000 uses the higher; 7,500 averages them; 15,000 adds capacities. Neither averaging nor addition follows the stated rule.

   Reference: Tadano — GR-1450EX Rated Lifting Capacities — p.16, Operation note 8

9. 9The lifting crew need access to the agreed lifting plan before work begins. Which member does the Code assign ownership of the plan and responsibility for making it available?

   1. A.The crane operator
   2. B.The appointed rigger
   3. C.The lifting supervisorCorrect answer: C
   4. D.The appointed signalman

   Explanation: The guidance states: "The Lifting Supervisor must take ownership of the lifting plan and make it available to other members of the Lifting Crew." This assigns plan ownership and availability to the lifting supervisor, while all crew members must follow it.

   Reference: WSH Council — Code of Practice on Safe Lifting Operations in the Workplaces — §7.3.1, p.18

10. 10Some legs of a multi-leg sling assembly are unused for the planned lift. How should those unused sling legs be arranged?

    1. A.Place the unused legs across the top surface of the load
    2. B.Loop the unused legs around the other loaded sling legs
    3. C.Hook the unused legs up properly before starting the liftCorrect answer: C
    4. D.Leave the unused legs extended alongside the lifted load

    Explanation: The guidance states: "Make sure any unused slings are hooked up properly." Unused legs are hooked up so they do not hang freely. Laying, looping or extending them is not the handbook's specified arrangement.

    Reference: WSH Council — Worker's Safety Handbook for Rigger and Signalman — §15, p.19