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A set of questions and answers related to the mobile crane inspector exam. It covers topics such as osha regulations, asme standards, crane components, inspection procedures, and safety practices. The questions are designed to test knowledge of crane operation, maintenance, and safety, making it a valuable resource for those preparing for the mobile crane inspector exam. It offers practical insights into the standards and regulations governing crane operations, enhancing understanding and preparedness for certification.
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Question 1. Which OSHA regulation specifically governs cranes and derricks in construction? A) 29 CFR 1910 Subpart N B) 29 CFR 1926 Subpart CC C) ASME B30. D) ANSI Z Answer: B Explanation: OSHA 29 CFR 1926 Subpart CC is the primary regulation for cranes and derricks in construction. Question 2. What is the main focus of ASME B30.5? A) Personal fall arrest systems B) Mobile and locomotive cranes
C) Electrical safety in construction D) Scaffolding requirements Answer: B Explanation: ASME B30.5 specifically covers mobile and locomotive cranes. Question 3. According to OSHA, who is responsible for conducting daily crane inspections? A) General contractor B) Qualified rigger C) Competent person D) Crane operator only Answer: C
A) To display engine temperature B) To prevent two-blocking C) To warn or prevent overload conditions D) To adjust outrigger positions Answer: C Explanation: The LMI alerts operators to overload conditions, enhancing safety. Question 6. What document must always be referenced for crane- specific inspection and maintenance procedures? A) OSHA website B) Manufacturer’s operations and maintenance manual C) ASME B30.
D) Project safety plan Answer: B Explanation: Manufacturer’s manuals provide authoritative, crane- specific guidance. Question 7. How often must frequent inspections of mobile cranes be performed? A) Annually B) Monthly C) Daily to monthly, depending on use D) Only after repairs Answer: C Explanation: Frequent inspections occur daily to monthly, based on service and use.
B) Prevents the load block from contacting the boom tip C) Measures wind speed D) Locks the outriggers in position Answer: B Explanation: A2B devices prevent the load block from striking the boom tip, avoiding rope damage. Question 10. Which type of inspection is required after a crane has undergone repairs or modifications? A) Frequent B) Periodic C) Post-assembly/special inspection D) None required
Answer: C Explanation: A special inspection is needed after repairs, modifications, or assembly. Question 11. Which standard details the requirements for hook inspection? A) ASME B30. B) OSHA 1926. C) ASME B30. D) ANSI A10. Answer: A Explanation: ASME B30.10 covers hooks and their inspection requirements.
C) Outrigger D) Hoist Answer: B Explanation: A jib extends the boom length, increasing reach. Question 14. Which of the following is NOT checked during daily pre- operational inspections? A) Wire rope condition B) Hydraulic fluid levels C) Engine oil level D) Internal weld integrity Answer: D
Explanation: Internal weld integrity is checked during more detailed periodic inspections. Question 15. What is the purpose of outriggers on a mobile crane? A) Increase lifting speed B) Stabilize the crane during operations C) Reduce counterweight requirements D) Support the boom Answer: B Explanation: Outriggers stabilize the crane, preventing tipping during lifting. Question 16. When inspecting a wire rope, which of the following is a cause for removal from service?
D) Load chart Answer: B Explanation: Inspection findings are documented in the inspection record/log. Question 18. What is the minimum frequency for periodic inspections on cranes in normal service? A) Weekly B) Monthly C) Annually D) Every two years Answer: C Explanation: Periodic inspections are required at least annually.
Question 19. What is the main purpose of a crane’s counterweight? A) Reduce load radius B) Balance the crane against the lifted load C) Increase boom reach D) Support the outriggers Answer: B Explanation: Counterweights balance the crane to prevent tipping. Question 20. Which crane component rotates to allow the boom to swing? A) Outrigger B) Superstructure/turret
Explanation: Cracks or defects in welds can lead to catastrophic failure. Question 22. According to ASME B30.5, which of the following should be checked during a frequent crane inspection? A) Foundation settlement B) Crane operator’s license C) Operating controls and safety devices D) Soil compaction Answer: C Explanation: Controls and safety devices are checked frequently for safe operation. Question 23. Which of the following is NOT a function of the crane’s hoist mechanism?
A) Lifting the load B) Lowering the load C) Rotating the superstructure D) Holding the load in position Answer: C Explanation: The hoist mechanism lifts, lowers, and holds loads, but does not rotate the crane. Question 24. What is the primary function of a crane’s boom angle indicator? A) Show counterweight position B) Indicate the angle of the boom to the horizontal C) Display wind speed
Question 26. When should non-destructive testing (NDT) be considered for crane components? A) Only during manufacturing B) When visual inspection suggests hidden defects C) For every daily inspection D) Never required Answer: B Explanation: NDT is used when there is suspicion or risk of hidden flaws. Question 27. When calculating net load for crane lifting, which should be subtracted from the gross load? A) Weight of the crane
B) Weight of the rigging and attachments C) Weight of the operator D) Wind speed Answer: B Explanation: The net load is the gross load minus the weight of rigging/attachments. Question 28. What is the purpose of a crane’s swing brake? A) Limits boom extension B) Controls and stops rotation of the superstructure C) Adjusts outrigger position D) Locks the load block Answer: B
