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Category 3 Non-Cab Operated Crane
Safety | LATEST UPDATE
COMPREHENSIVE QUESTIONS
(Frequently Most Tested) AND VERIFEID
ANSWERS (100% accurate)|GET IT A+
A floating crane with a capacity of 200,000lbs. is a ________________ crane. - ANSWER-Category 1 What is the category of a jib crane with a capacity of less than 20,000 pounds? - ANSWER-Category 3 An OET, Bridge crane with a capacity of 80,000lbs. is a ________________ crane. - ANSWER-Category 2 A commercial truck mounted crane with a capacity of 14,000 lbs. is a __________ crane. - ANSWER-category 4 What types of power does a Category 1 or 4 crane generally use and what is its source? - ANSWER-Electric or hydraulic power supplied by a diesel engine Load - ________ parts are those that restrain position or control the movement of the load. - ANSWER-controling
A hook is what type of component? - ANSWER-Load-Bearing Part Hydraulic foot brakes are what type or group of components? - ANSWER-Load- Controlling Parts Load - _____________ parts are those that support the load. - ANSWER-bearing How is electrical current conveyed from the revolving portion of the crane to the lower crane structure? - ANSWER-Through the collector ring system Safety devices that provide protection for personnel and equipment are considered _____________ safety devices. - ANSWER-general Safety devices that affect the safe load lifting and handling capabilities of equipment are considered __________________ safety devices. - ANSWER- operational Which of the following does not affect the safe operation of the crane? - ANSWER- General Safety Devices A travel alarm is what type or group of components? - ANSWER- A travel alarm is what type or group of components? - ANSWER-General Safety Device
Place the steps listed in the correct order to check the Upper Limit Switch on a hoist. - ANSWER-Raise hoist two feet below switch & stop 2.Slowly raise hook block into switch 3.Ensure hoist stops with button depressed There must always be a minimum of _________ full wraps of wire rope on grooved drums. - ANSWER- 2 Part of the walk around check is to look for ___________. - ANSWER-deficiencies The minimum number of wraps of wire rope required on non-grooved drums is __________. - ANSWER- 3 What is the purpose of a hoist upper limit switch? - ANSWER-To prevent "two- blocking" or over-travel of the hook block Emergency stops and brakes should be checked while operating the crane at the fastest speed possible. - ANSWER-F What is two-blocking and why is it dangerous? - ANSWER-Two-blocking occurs when the hook block makes contact with the drum or sheaves. It is dangerous because it could result in damage to the crane, parting of the hoist lines, and dropping the load. Detailed written procedures are required for: - ANSWER-complex lifts.
For all complex lifts, a rigger supervisor, operator supervisor, or a rigging or crane operator working leader shall review on-site conditions and shall ... - ANSWER- conduct a pre-job briefing. Lifts of test weights during maintenance or load test are ... - ANSWER-excluded from the complex lift requirements. A crane with a capacity of 100,000 pounds is performing a lift of 40,000 pounds. This is a(n): - ANSWER-non-complex lift. Which of the following identify the two basic categories of crane lifts? - ANSWER- Complex and Non-Complex Personnel lifts are ... - ANSWER-always considered complex lifts. Personnel in a man-lift platform or basket must ... - ANSWER-wear a full body harness with a shock-absorbing lanyard. For personnel lifts, the total load must not exceed ... - ANSWER-50% of the hoist's rated capacity. To find the weight of a piece of aluminum plate, you would multiply ... - ANSWER- square feet times material weight per square foot based on a specified thickness.
A cylinder is made of solid aluminum which has a unit weight of 165 pounds per cubic foot. What is the weight of this cylinder if the diameter is 4 feet and the height is 5 feet? - ANSWER-10,362 lbs A rectangular shaped tank has a length of 24 feet, a width of 10 feet, and a height of 12 feet. What is the volume of the tank? - ANSWER-2,880 cubic feet An attachment point is 2 feet from the center of gravity and the other attachment point is 6 feet from the center of gravity. What is the correct percentage of weight distribution to each attachment point with the attachment point 2 feet from the center of gravity being listed first - ANSWER-75%, 25% Center of Gravity is best described as: - ANSWER-where all the weight is concentrated The center of gravity is located below the center of balance. - ANSWER-false The center of gravity (CG) is always located within the object. - ANSWER-false Attachment point #1 is 6 feet from the center of gravity (CG) and attachment point #2 is 3 feet from the center of gravity (CG). There is a 10,000 lbs load attached. What is the correct equation to find the weight distribution for attachment point #1? - ANSWER-3 divided by 9 multiplied by 10,000 (3 / 9 x 10,000) The center of gravity (CG) will always find its way directly under the crane hook when lifted off the ground. - ANSWER-false
The reason test and inspection is required is to: - ANSWER-prevent personnel injury. identify sub-standard equipment. remove unsafe equipment. Rigging gear identification markings applied by the activity usually indicate that the equipment is: - ANSWER-in an inspection program Equipment test and inspection requirements in section 14 of NAVFAC P-307 do not apply to: - ANSWER-oem installed bolt-on pads Which of the following markings are required on Lashing? - ANSWER-the reinspect due date rated load
A metal mesh sling can remain in service if only one wire is broken in the mesh. - ANSWER-False Rigging hardware that is bent can be repaired by straightening it back to original shape. - ANSWER-false Rigging hardware such as eyebolts, links, rings, and shackles are required to have a periodic inspection every 2 years. - ANSWER-False Distorted rigging hardware must be: - ANSWER-Removed from service and destroyed Documentation for alteration or repair of rigging equipment is required to be retained for: - ANSWER-the life of the equipment Which section of the NAVFAC P-307 is the rigging gear section? - ANSWER-section 14 It is okay to use home-made rigging gear as long as you are lifting light loads. - ANSWER-false When selecting rigging gear for a job, which of the statements below should be followed? - ANSWER-all the above What should be used between the rigging gear and the load to prevent damage to the load and rigging? - ANSWER-appropriate sling protection
Two people can operate a chain fall if the pull chain is too hard for one person to pull while hoisting a load. - ANSWER-False Pulls outside the plane of the eye are allowed on eyebolts as long as the rated load has been decreased. - ANSWER-False The minimum depth of thread engagement for a 3/4 inch eyebolt into a steel object is: - ANSWER-1 1/8th inch An angular pull of 45° is allowed on non-shoulder type eyebolts. - ANSWER-false The rated load of swivel hoist rings must be reduced when they are used for angular pulls. - ANSWER-false The minimum D/d ratio in the body of a synthetic rope sling is: - ANSWER-1: D/d ratio does not affect synthetic web slings. - ANSWER-True It is acceptable to bend a 1 inch wire rope sling around a 3/4 inch shackle. - ANSWER-False The minimum D/d ratio allowed for wire rope slings is: - ANSWER-1:
A hoist can be hung from a wire rope sling without a shackle installed if the diameter of the hook is equal to or greater than the diameter of the sling. - ANSWER-true When lifting a load that is near the rated capacity of the hoist the hoist brake should be checked by: - ANSWER-lifting the load just clear of its supports, stopping movement, then checking to ensure the load is not lowering. Why should hoists not be used in tie down applications? - ANSWER-because they may be subjected to shock loading Hoist hooks must have latches or be moused during lifting operations. - ANSWER- true Prior to use load chains should be inspected for: - ANSWER-damage proper reeving Direct voice should only be used when: - ANSWER-the operator and rigger are working in close proximity and ambient noise is low. In the crane cab, the crane operator must have a clear view of the ... - ANSWER- ASME Hand Signal Chart How many signalers shall communicate with the crane operator at the same time.
- ANSWER-one signaler at a time
A universal language understood by everyone involved with weight handling is: - ANSWER-hand signals Any additional hand signals must be ... - ANSWER-approved by user When operating cranes, the operator's primary responsibility is to: - ANSWER- operate safely Crane operators at naval activities may operate various types, makes, and models of cranes for which they are licensed. How must safety and operator proficiency be assured under these circumstances? - ANSWER-Operators must be familiarized (as directed by a supervisor) before operating.
- ANSWER-certification number Which of the following operator responsibilities is considered the basis for ensuring a safe and reliable crane? - ANSWER-the presue Check or Operators Daily Checklist What information should be posted, clearly understandable, and readily available to the operator? - ANSWER-Lables for each function When can an unlicensed crane operator trainee operate a crane?Only under the direct observation of a licensed operator - ANSWER-Only under the direct observation of a licensed operator
The rigging operating envelope contains the rigging gear and miscellaneous equipment covered by P-307 section 14, the load itself and... - ANSWER-NOT the crane removal procedure
