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Category 3 Non-Cab Operated Crane
Safety Questions and Correct Answers
- ANScertification number A 60° sling angle will be formed when you match the sling length to the diagonal distance between attachment points. - ANStrue A box has 27 cubic feet of sand in it. Sand weighs 105 lbs. per cubic foot. The box weighs 1,200 lbs. empty. The correct equation to find the total weight is: - ANS27 x 105 = 2,835 + 1,200 = 4,035 lbs A circular shaped 1/2 inch thick aluminum plate has a diameter of 7 feet. What is the area of the plate rounded up? - ANS39 square feet A commercial truck mounted crane with a capacity of 14,000 lbs. is a __________ crane. - ANScategory 4 A complex shape of 1 inch aluminum plate measures 6 feet long on the top edge, 8 feet wide on the left edge, 12 feet long on the bottom edge, ending with a 10 foot long hypotenuse connecting back to the top edge. What is the correct equation to find the area of the triangular shape? - ANS8 x 6 / 2
A complex shape of 1 inch thick aluminum plate has a rectangular area of 64 square feet and triangular area of 16 square feet. If aluminum weighs 14 pounds per square foot, how much does the plate weigh (rounded up to the nearest hundred pounds)? - ANS1,200 lbs A crane with a capacity of 100,000 pounds is performing a lift of 40, pounds. This is a(n): - ANSnon-complex lift. A cylinder has a diameter of 12 feet, and a height of 17 feet. What is the volume of the cylinder rounded up? - ANS1,922 cubic feet 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? - ANS10,362 lbs A floating crane with a capacity of 200,000lbs. is a ________________ crane. - ANSCategory 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. - ANStrue A hook is what type of component? - ANSLoad-Bearing Part A knot in a synthetic sling is allowed as long as it does not cause permanent damage to the sling. - ANSfalse
An object has a length of 5 feet, a width of 3 feet, and a distance of 5 feet 6 inches between attachment points. What length slings would you select to ensure the horizontal sling angle was 60° or greater? - ANS An OET, Bridge crane with a capacity of 80,000lbs. is a ________________ crane. - ANSCategory 2 Any additional hand signals must be ... - ANSapproved by user 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? - ANS3 divided by 9 multiplied by 10,000 (3 / 9 x 10,000) Center of Gravity is best described as: - ANSwhere all the weight is concentrated Chain slings used in cargo transfer should be inspected annually. - ANSFalse 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? - ANSOperators must be familiarized (as directed by a supervisor) before operating.
D/d ratio does not affect synthetic web slings. - ANSTrue Deficiencies are required to be reported by the end of the shift. - ANSfalse Detailed written procedures are required for: - ANScomplex lifts. Direct voice should only be used when: - ANSthe operator and rigger are working in close proximity and ambient noise is low. Distorted rigging hardware must be: - ANSRemoved from service and destroyed Documentation for alteration or repair of rigging equipment is required to be retained for: - ANSthe life of the equipment Documented checks are required for which of the following Category 3 cranes? - ANSgantry wall bridge Documented records are required for periodic inspections of all rigging equipment.falsefalse - ANSfalse During the walk around check you notice a loose bolt on the crane. You should: - ANSNotify your supervisor of the deficiency.
If the upper limit switch is working correctly, there is no need to check the lower limit switch. - ANSfasle In general, which of the following things should an operator do when traveling cranes with loads? - ANSPerform all of the listed actions above In the crane cab, the crane operator must have a clear view of the ... - ANSASME Hand Signal Chart It is acceptable to bend a 1 inch wire rope sling around a 3/4 inch shackle. - ANSFalse It is okay to use home-made rigging gear as long as you are lifting light loads. - ANSfalse It is the operator's responsibility to report a deficiency to the Crane Department. - ANSfalse Lifts of test weights during maintenance or load test are ... - ANSexcluded from the complex lift requirements. Load - ________ parts are those that restrain position or control the movement of the load. - ANScontroling Load - _____________ parts are those that support the load. - ANSbearing
Matching ID marks on rigging gear are required for: - ANScomponents that can be seperated Part of the no load operational check is to ensure the proper _________ of all controls. - ANSfunction Part of the walk around check is to look for ___________. - ANSdeficiencies Personnel in a man-lift platform or basket must ... - ANSwear a full body harness with a shock-absorbing lanyard. Personnel lifts are ... - ANSalways considered complex lifts. Place the steps listed in the correct order to check the Upper Limit Switch on a hoist. - ANSRaise hoist two feet below switch & stop 2.Slowly raise hook block into switch 3.Ensure hoist stops with button depressed Prior to use load chains should be inspected for: - ANSdamage proper reeving Pulls outside the plane of the eye are allowed on eyebolts as long as the rated load has been decreased. - ANSFalse
The center of gravity (CG) will always find its way directly under the crane hook when lifted off the ground. - ANSfalse The center of gravity is located below the center of balance. - ANSfalse The crane operating envelope includes the crane, the operator, the riggers, the crane walkers, and ... - ANSrigging gear between the hook and any supporting structures the load The crane Pre-use Check consists of: - ANSA walk around visual check Performing a "No load" operational The formula for determining the area of a triangular shaped object is: - ANSBase x Height divided by 2 The minimum D/d ratio allowed for wire rope slings is: - ANS1: The minimum D/d ratio in the body of a synthetic rope sling is: - ANS1: The minimum depth of thread engagement for a 3/4 inch eyebolt into a steel object is: - ANS1 1/8th inch
The minimum number of wraps of wire rope required on non-grooved drums is __________. - ANS The rated load of swivel hoist rings must be reduced when they are used for angular pulls. - ANSfalse The reason test and inspection is required is to: - ANSprevent personnel injury. identify sub-standard equipment. remove unsafe equipment. The rigging operating envelope contains the rigging gear and miscellaneous equipment covered by P-307 section 14, the load itself and... - ANSNOT the crane removal procedure The second step in the procedure for lifting loads is to: - ANShoist slowly and remove slack from the rigging gear
What information should be posted, clearly understandable, and readily available to the operator? - ANSLables for each function What is the category of a jib crane with a capacity of less than 20, pounds? - ANSCategory 3 What is the minimum grade of chain required for chain slings? - ANSgrad 80 What is the most important reason to do a pre-use check? - ANSTo make sure the crane is safe to use. What is the purpose of a hoist upper limit switch? - ANSTo prevent "two- blocking" or over-travel of the hook block What is two-blocking and why is it dangerous? - ANSTwo-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. What markings are required on hoists? - ANSThe name of the manufacturer, model number, rated load, and re-inspection due date What should be used between the rigging gear and the load to prevent damage to the load and rigging? - ANSappropriate sling protection
What types of power does a Category 1 or 4 crane generally use and what is its source? - ANSElectric or hydraulic power supplied by a diesel engine When can an unlicensed crane operator trainee operate a crane?Only under the direct observation of a licensed operator - ANSOnly under the direct observation of a licensed operator When lifting a load that is near the rated capacity of the hoist the hoist brake should be checked by: - ANSlifting the load just clear of its supports, stopping movement, then checking to ensure the load is not lowering. When lifting loads with a crane, which of the following is the first thing an operator should do? - ANSCenter the hook over the center of gravity of the load. When operating cranes, the operator's primary responsibility is to: - ANSoperate safely When securing a chain hoist ________________ may be used by securing the hand chain around the load chain. - ANShalf hitches When selecting rigging gear for a job, which of the statements below should be followed? - ANSall the above Which of the following does not affect the safe operation of the crane? - ANSGeneral Safety Devices
With the proper D/d ratio a sling in a basket hitch can lift ___ of the rated load of the sling. - ANS
