Crane Training - Governor's Industrial Safety & Health ...

Crane Training - Governor's Industrial Safety & Health ...

Safety Team presents The Basics of Overhead Crane Pre-op Inspections 1 Disclaimer The following information is for informational use only. This is not intended to replace or add on to the state/federal

regulations or guidelines. 2 Introduction 3 Presentation Objectives The proper names of various types of overhead cranes and hoists.

Daily operator inspection procedures and corresponding components. 4 During This Study Students Will Learn: The different types of crane duty cycles and their applications. Safe operating practices for overhead cranes and hoists. 5

During This Study Students Will Learn: Reviewed and Adopted in to law (Consensus) by: OSHA Occupational Safety & Health Administration DOSH Division of Occupational Safety & Health (Department of Labor & Industries L&I WA state) 6

Overhead Crane and Hoist Types, Terminology and Classifications 7 Applicable Regulations Cranes used in industry are regulated by 29CFR (Code of Federal Regulations) 1910.179 Industry Consensus Standards

Industry Consensus Standards ASME B30.2 ASME B30.9 Overhead and Gantry Cranes ASME B30.26 Rigging Hardware

Slings 8 Overhead Bridge Crane 9 Overhead Gantry Crane

10 Duty Cycles The Duty Cycle rating of crane determines the amount of work a particular crane can perform in a specified time frame. For an overhead crane or hoist, there are 6 general overhead crane and hoist duty cycles classifications. These are based on; the amount it can lift, the vertical and horizontal distance traveled, the number of times per hour it will lift, and the work environment.

11 Duty Cycles The Alliance ingot crane operates many hours per day transporting ingots over a distance of several hundred feet between soaking pits and rolling mill, the is an example of a HEAVY USE crane, 22.5 ton capacity.

132 drive motor, service crane, used in the early 1980s to install the motor in the background and has been on STANDBY ever since that time, 85 ton capacity. 12 Machine Condition Repairs/Modifications

Only repairs approved by the manufacturer Maintenance manual will provide info on approved repairs and procedures. Strictly prohibited unless approved by manufacturer or a qualified Mods/repairs to any: engineer. Load bearing Load supporting

Load controlling 14 Mechanical Systems Check for: Bridge girder cracks Loose or missing mounting bolts Lack of lubrication where needed Loose couplings

Worn brake linings Electrical Systems Check for: Moisture Proper closure and latching of doors Damaged electrical disconnects Resistors must be: Tight, no loose connections Clean and show no signs of overheating

15 Control Functions Check all: Control functions prior to use Run each controller through its step This is the speed and functions (up/down, north/south, etc) 16

Safety Devices Numerous devices installed (operator check) Fire extinguishers (BC 10lb min. cab crane only) Emergency descent device Rescumatic, (cab crane only), this device will allow a person of up 300 lbs. to safely decent from a crane cab at a rate of 3 feet per second. Travel limiters (i.e. end stops) Can be mechanical or electrical Load limiters

Travel alarms Warning lights The most important safety device is the: Upper limit switch (A.K.A - Youngstown) Stops upward travel of the hook block before contacting the bridge or hoist drum 17 Load Line Condition Inspected once a month end to end (crane crew)

Broken Wires Crushing Bird caging High stranding Heat damage Chemical damage Kinking Crushed Rope

Broken Strands 18 Load Line Condition Wire Rope - broken wires Hoist Rope: 12 4 1 criteria 12 broken wires in one rope lay 4 broken wires in one strand 1 broken wire at the end fitting

Wire Rope Slings: 10 5 1 19 Load Line Condition Chains - look for any: Flat spots caused by abrasion Cracked/broken welds Twisting Elongation

Bowl wear Corrosion Heat damage Weld spatter Grade (must be 8 or 10) 20

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