Overhead crane electrical supply connection
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Published by SALUSSafe Work Procedure: Overhead Crane Electrical Supply Connection
Document Number: [SWP-NUMBER] Revision Date: [DATE] Next Review Date: [NEXT REVIEW DATE] Department: [DEPARTMENT NAME]
1. Scope
This Safe Work Procedure (SWP) outlines the necessary safety precautions and procedures to be followed when connecting electrical supply to an overhead crane. It applies to all personnel involved in the installation, maintenance, and repair of electrical connections for overhead cranes. This procedure covers the safe disconnection of power, inspection of electrical components, proper connection techniques, and testing procedures to ensure the safe and reliable operation of the crane's electrical system.
This procedure applies to all work environments where overhead cranes are used and require electrical connections, including manufacturing plants, warehouses, and construction sites. It is applicable to both new installations and existing crane systems undergoing maintenance or repairs.
This SWP should be used in conjunction with the manufacturer's specifications for the specific overhead crane model, as well as all relevant electrical safety standards and regulations.
2. Definitions
Overhead Crane: A crane with a movable bridge carrying a movable or fixed hoisting mechanism and traveling on an overhead fixed runway structure [1].
Runway Conductors: The electrical conductors located along a crane runway to provide power to the crane [2].
Disconnecting Means: A switch or circuit breaker used to cut off electrical power to the crane 4, 18.
Qualified Person: An individual with the necessary training, knowledge, and experience to perform electrical work safely [3].
3. Responsibilities
3.1 Supervisors
- Ensure that all workers involved in the electrical connection of overhead cranes are properly trained and competent [4].
- Provide workers with the necessary tools, equipment, and personal protective equipment (PPE) to perform the job safely.
- Conduct pre-job briefings to discuss the scope of work, potential hazards, and control measures.
- Monitor the work to ensure that it is performed in accordance with this SWP and all applicable safety regulations.
3.2 Workers
- Follow all safety procedures and instructions provided by supervisors and this SWP.
- Inspect tools and equipment before use and report any defects to the supervisor.
- Use the correct PPE as required by this SWP and the site-specific safety plan.
- Report any hazards or unsafe conditions to the supervisor immediately.
- Do not operate any equipment unless properly trained and authorized.
3.3 Health and Safety Representative
- Assist in the development and review of this SWP.
- Conduct regular inspections of the work area to identify potential hazards and ensure compliance with safety regulations.
- Investigate incidents and near-misses related to overhead crane electrical connections and recommend corrective actions.
- Provide guidance and support to supervisors and workers on health and safety matters.
4. Potential Hazards and Risks
| Hazard | Risk | Control Measures |
|---|---|---|
| Electrical shock | Electrocution, burns | De-energize and lockout/tagout the power supply before starting work. Verify zero energy with a voltage tester. Use insulated tools and PPE. |
| Arc flash | Burns, eye injury | Wear appropriate arc-rated PPE. Maintain safe distances from energized parts. |
| Falls from height | Injury, death | Use fall protection equipment (e.g., safety harness, lanyard) when working at heights. Ensure proper access and egress. |
| Dropped objects | Head injury, foot injury | Secure tools and materials to prevent them from falling. Use tool lanyards. Establish a drop zone and barricade the area below. |
| Crane malfunction | Injury, property damage | Inspect the crane and its components before starting work. Follow the manufacturer's specifications for maintenance and repair. |
| Working near overhead power lines | Electrocution | Maintain a safe distance from overhead power lines. Contact the utility company to de-energize or insulate the lines. [5] |
5. Personal Protective Equipment (PPE)
It is essential to use the proper PPE to protect against potential hazards during overhead crane electrical supply connection [4].
- Hard hat - Protects the head from falling objects and impacts.
- Safety glasses - Protects the eyes from dust, debris, and arc flash.
- Insulated gloves - Protects hands from electrical shock. Must be rated for the voltage being worked on.
- Safety boots - Protects feet from impacts, punctures, and electrical hazards. Should be non-conductive.
- Arc-rated clothing - Protects the body from burns in the event of an arc flash. The clothing must be rated for the potential arc flash hazard.
Inspect all PPE before use for any signs of damage or wear. Replace damaged PPE immediately. Clean and maintain PPE according to the manufacturer's instructions.
6. Equipment and Tools
It is essential to use the proper equipment and tools for overhead crane electrical supply connection.
- Voltage tester - Used to verify that the power supply is de-energized before starting work.
- Insulated screwdrivers and pliers - Used for making electrical connections and repairs. Must be rated for the voltage being worked on.
- Lockout/tagout devices - Used to secure the power supply in the de-energized state and prevent accidental re-energization.
- Multimeter - Used for testing electrical circuits and components.
- Torque wrench - Used to tighten electrical connections to the proper torque specifications.
- Fall protection equipment - Used when working at heights, including a safety harness, lanyard, and anchor point.
Inspect all equipment and tools before use for any signs of damage or wear. Remove damaged equipment from service. Use tools according to the manufacturer's instructions.
7. Pre-Job Requirements
7.1 Training and Competency
- Workers must be qualified electricians with experience in overhead crane electrical systems.
- Workers must be trained in lockout/tagout procedures and electrical safety practices.
- Workers must be trained in the proper use of fall protection equipment, if applicable.
- Crane operators must be trained and certified in accordance with applicable standards [4].
7.2 Pre-Job Briefing
- Conduct a pre-job briefing with all workers involved in the task.
- Discuss the scope of work, potential hazards, and control measures.
- Review this SWP and ensure that all workers understand their roles and responsibilities.
- Identify emergency procedures and contact information.
- Ensure all workers have the necessary qualifications and are fit for duty [6].
7.3 Work Area Preparation
- Inspect the work area for any hazards, such as obstructions, slippery surfaces, or inadequate lighting.
- Barricade the area below the work zone to prevent unauthorized access and protect personnel from falling objects [4].
- Ensure that the work area is clean and free of debris.
- Provide adequate lighting for the task [4].
- Verify that the crane is properly grounded [7].
8. Safe Work Procedure Steps
8.1 De-energize and Lockout/Tagout
- Identify the correct disconnecting means for the overhead crane's power supply 4, 18.
- Notify all affected personnel that the power supply will be de-energized.
- Turn off the disconnecting means and verify that the power supply is de-energized using a voltage tester.
- Apply lockout/tagout devices to the disconnecting means to prevent accidental re-energization [8].
- Ensure that the lockout/tagout devices are properly labeled with the name of the person who applied them and the date.
8.2 Inspect Electrical Components
- Visually inspect all electrical components, including wiring, connections, switches, and circuit breakers, for any signs of damage or wear.
- Check for loose connections, frayed wires, and corroded terminals.
- Ensure that all components are properly rated for the voltage and current requirements of the crane.
- Replace any damaged or worn components before proceeding.
8.3 Connect Electrical Supply
- Follow the manufacturer's instructions for connecting the electrical supply to the overhead crane.
- Use insulated tools and PPE when making electrical connections.
- Ensure that all connections are tight and secure.
- Use the proper torque specifications when tightening connections.
- Verify that the wiring is properly routed and supported to prevent strain on the connections.
8.4 Test Electrical System
- After connecting the electrical supply, test the system to ensure that it is functioning properly.
- Use a multimeter to check the voltage and current at various points in the circuit.
- Verify that all safety devices, such as limit switches and overload protection, are working correctly 4, 11.
- Test the crane's functions, such as hoisting, trolley travel, and bridge travel, to ensure that they are operating smoothly and safely.
8.5 Remove Lockout/Tagout and Re-energize
- After testing the electrical system and verifying that it is functioning properly, remove the lockout/tagout devices.
- Notify all affected personnel that the power supply will be re-energized.
- Turn on the disconnecting means and verify that the crane is receiving power.
- Monitor the crane's operation for any signs of malfunction or unsafe conditions.
9. Precautions and Safety Measures
- Electrical Safety: Always treat electrical circuits as live until proven otherwise. Use appropriate PPE and insulated tools. 8, 14
- Lockout/Tagout: Follow proper lockout/tagout procedures to prevent accidental re-energization of the power supply [8].
- Fall Protection: Use fall protection equipment when working at heights. Ensure that the equipment is properly inspected and maintained.
- Housekeeping: Keep the work area clean and free of debris to prevent slips, trips, and falls.
- Communication: Maintain clear communication with all workers involved in the task. Use hand signals or radios to communicate effectively.
- Overhead Power Lines: Be aware of the location of overhead power lines and maintain a safe distance 1, 5.
10. Emergency Procedures
10.1 General Emergency Response
- In the event of an emergency, immediately stop work and assess the situation.
- Evacuate the area if necessary.
- Call for emergency assistance, such as medical services or the fire department.
- Provide first aid to injured personnel.
- Report the incident to the supervisor and health and safety representative.
10.2 Specific Emergency Scenarios
- Electrical Shock: Immediately de-energize the circuit if possible. Use a non-conductive object to separate the person from the electrical source. Administer first aid and call for medical assistance.
- Fall from Height: Do not move the injured person unless there is an immediate danger. Call for medical assistance and provide first aid.
- Fire: Activate the fire alarm and evacuate the area. Use a fire extinguisher to put out the fire if it is small and contained. Call the fire department.
10.3 Emergency Contact Information
- Emergency Services: 911
- [Company Medical Contact]: [PHONE NUMBER]
- [Health and Safety Representative]: [PHONE NUMBER]
- [Supervisor]: [PHONE NUMBER]
11. Incident Reporting and Investigation
Report all incidents, near-misses, and hazards to the supervisor and health and safety representative immediately. An investigation will be conducted to determine the root cause of the incident and implement corrective actions to prevent recurrence.
12. References and Related Documents
- Safety Standards for General Safety and Health Standards (Chapter 296-24 WAC)
- Occupational Health and Safety Code
- Rules for the Administration of the Oregon Safe Employment Act
- CSA Standard CAN/CSA B167-96 (R2007), Safety Standard for Maintenance and Inspection of Overhead Cranes, Gantry Cranes, Monorails, Hoists and Trolleys [9].
- ANSI B30.2.0-1967, Safety Code for Overhead and Gantry Cranes [10].
Approved by: [NAME AND POSITION] Date: [APPROVAL DATE]
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Sources used for this answer
[1] Rules for the Administration of the Oregon Safe Employment Act (General Occupational Safety and Health, Division 2, OSHA Oregon)
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Division 2 AO 3-2019 Oregon Administrative Rules Oregon Occupational Safety and Health Division - (l) An unimpaired horizontal clearance of not less than 3 feet shall be maintained between the rotating superstructure of any crane and any adjacent object or surface. If this clearance cannot be maintained, barricades shall be installed to isolate the hazardous area; - (m) All windows in cabs shall be of safety glass, or its equivalent, that introduces no visible distortion that will interfere with the safe operation of the machine; - (n) Cranes which operate at night shall have their load hooks and working areas adequately lighted; - (o) Sufficient light shall be provided in the operator's cage or cab to enable the operator to see clearly enough to perform his or her work; - (p) An accessible fire extinguisher of 10 BC rating, or higher, shall be available at all operator stations or cabs of equipment; - (q) Belts, gears, and other reciprocating, rotating, or moving parts or equipment shall be guarded as required in OAR 437, Division 2/O, Machinery and Machine Guarding. - (2) Crane operator training requirements: - (a) The employer shall establish written procedures for the safe operation of all cranes and derricks. - (b) The employer shall see that employees who operate cranes or derricks are properly trained, have sufficient practical experience, and follow operating procedures for the safe operation of the crane or derrick. - (c) The level of training and experience received by the employee to meet OAR [redacted phone](2)(b) above shall be recorded in writing. - (d) The employer shall maintain all written records of crane or derrick operators' training and experience, and shall make such records available for review by the Oregon Occupational Safety and Health Division (OROSHA) upon request. - (3) Overhead Wires - Operating Near Electric Power Lines. A warning sign, legible at 12 feet, shall be posted and maintained in plain view of the operators of each crane…
[2] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)
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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ ## Equipment . - (a) You must ensure that electrical equipment is located or enclosed so that live parts will not be exposed to accidental contact under normal operating conditions. - (b) You must ensure that electric equipment is protected from dirt, grease, oil, and moisture. - (c) You must ensure that guards for live parts are substantial and located so that they cannot be accidentally deformed so as to make contact with the live parts. ## Controllers . - (a) You must provide cranes not equipped with spring-return controllers or momentary contact pushbuttons with a device which will disconnect all motors from the line on failure of power and will not permit any motor to be restarted until the controller handle is brought to the 'off' position, or a reset switch or button is operated. - (b) You must provide lever operated controllers with a notch or latch which in the 'off' position prevents the handle from being inadvertently moved to the 'on' position. An 'off' detent or spring return arrangement is acceptable. - (c) You must ensure that the controller operating handle is located within convenient reach of the operator. - (d) You must ensure that as far as practicable, the movement of each controller handle is in the same general directions as the resultant movements of the load. - (e) You must ensure that the control for the bridge and trolley travel is located so that the operator can readily face the direction of travel. - (f) For floor-operated cranes, you must ensure that the controller or controllers if rope operated, automatically returns to the 'off' position when released by the operator. - (g) You must ensure that pushbuttons in pendant stations return to the off position when pressure is released by the crane operator. - (h) You must ensure…
[3] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)
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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ [Statutory Authority: RCW 49.17.010, .040, .050, and .060. 15-24-100 (Order 15-04), § 296-24-[redacted postal code], filed 12/01/2015, effective 01/05/2016. Statutory Authority: Chapter 49.17 RCW. 94-15-096 (Order 94-07), § 296-24-[redacted postal code], filed 7/20/94, effective 9/20/94; Order 73-5, § 296-24-[redacted postal code], filed 5/9/73 and Order 73-4, § 296-24-[redacted postal code], filed 5/7/73.] ## WAC 296-24-[redacted postal code] Other requirements. - (1) Rail clamps . You must ensure that rail clamps are not used as a means of restraining tipping of a locomotive crane. - (2) Ballast or counterweight . You must ensure that cranes are not be operated without the full amount of any ballast or counterweight in place as specified by the maker, but truck cranes that have dropped the ballast or counterweight may be operated temporarily with special care and only for light loads without full ballast or counterweight in place. The ballast or counterweight in place specified by the manufacturer must not be exceeded. - (3) Cabs . - (a) You must store necessary clothing and personal belongings in such a manner as to not interfere with access or operation. - (b) You must store tools, oil cans, waste, extra fuses, and other necessary articles in the tool box, and they must not be permitted to lie loose in or about the cab. ## (4) Refueling . - (a) You must ensure that refueling with small portable containers is done with an approved safety type can equipped with an automatic closing cap and flame arrester. Refer to WAC 296-24-[redacted postal code] for definition of approved. - (b) You must not refuel machines with the engine running. ## (5) Fire extinguishers . - (a) You must keep a carbon dioxide, dry chemical, or equivalent fire extinguis…
[4] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)
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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Bumper (buffer) . An energy absorbing device for reducing impact when a moving crane or trolley reaches the end of its permitted travel; or when two moving cranes or trolleys come in contact. Cab . The operator's compartment on a crane. Cab-operated crane . A crane controlled by an operator in a cab located on the bridge or trolley. Cantilever gantry crane . A gantry or semigantry crane in which the bridge girders or trusses extend transversely beyond the crane runway on one or both sides. Clearance . The distance from any part of the crane to a point of the nearest obstruction. Collectors (current) . Contacting devices for collecting current from runway or bridge conductors. Conductors, bridge . The electrical conductors located along the bridge structure of a crane to provide power to the trolley. Conductors, runway (main) . The electrical conductors located along a crane runway to provide power to the crane. Control braking . A method of controlling crane motor speed when in an overhauling condition. Controller, spring return . A controller which when released will return automatically to a neutral position. Countertorque . A method of control by which the power to the motor is reversed to develop torque in the opposite direction. Crane . A machine for lifting and lowering a load and moving it horizontally, with the hoisting mechanism and integral part of the machine. Cranes whether fixed or mobile are driven manually or by power. Designated . Selected or assigned by the employer or the employer's representative as being qualified to perform specific duties. Drag brake . A brake which provides retarding force without external control. Drift point . A point on a travel motion controller which releases the brake while the motor i…
[5] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)
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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (f) Evidence of physical defects, or emotional instability which could render the operator or trainee a hazard to their self or others, or could interfere with their safe performance may be sufficient cause for disqualification. In such cases, you must require specialized clinical or medical judgments or tests (which include annual medical certification for recovered heart attack patients). - (g) Evidence that an operator or trainee is subject to seizures or loss of physical control must be sufficient reason for disqualification. You must require specialized medical tests to substantiate these conditions. - (5) Persons who have recovered from a heart attack must be exempted from the provisions of subsection (3) of this section, as it pertains to their heart condition, provided: - (a) A medical release is obtained from their attending medical doctor. - (b) The release must state that the operation of a crane will not present a hazard to their self or others. - (c) An examination by a medical doctor, and renewal of the work release certification is required annually. - (6) The operator must be fully familiar with all crane rules and with the crane mechanism and its proper care. Needed adjustments or repairs must be reported at once to the proper authority. - (7) The operator must not eat, smoke or read while actually engaged in the operation of the crane, or operate the crane when physically unfit. - (8) The operator or someone especially designated must properly lubricate all working parts of the crane. - (9) You must keep cranes clean. - (10) You must ensure that whenever the operator finds the main or emergency switch open, it is not closed, even when starting on regular duty, until it is determined that no one is on or about the crane. You must not …
[6] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)
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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (i) Be strong enough to prevent crushing. - (ii) Be free from defects. - (iii) Be of sufficient width and length to prevent shifting or toppling under load. - (j) You must not lower either the load or the boom below the point where less than two full wraps of rope remain on their respective drums. - (k) Before lifting loads with locomotive cranes without using outriggers, you must apply means to prevent the load from being carried by the truck springs. - (l) When two or more cranes are used to lift one load, one designated person must be responsible for the operation. The designated person must be required to analyze the operation and instruct all personnel involved in the proper positioning, rigging of the load, and the movements to be made. - (m) In transit you must exercise the following additional precautions: - (i) The boom must be carried in line with the direction of motion. - (ii) The superstructure must be secured against rotation, except when negotiating turns when there is an operator in the cab or the boom is supported on a dolly. - (iii) The empty hook must be lashed or otherwise restrained so that it cannot swing freely. - (n) Before traveling a crane with load, a designated person must be responsible for determining and controlling safety. Decisions such as position of load, boom location, ground support, travel route, and speed of movement must be in accord with their determinations. - (o) You must not travel a crane with or without load with the boom so high that it may bounce back over the cab. - (p) When rotating the crane, you must avoid sudden starts and stops. You must ensure that rotational speed is such that the load does not swing out beyond the radii at which it can be controlled. You must use a tag or restraint line when rota…
[7] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)
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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Semigantry crane . A gantry crane with one end of the bridge rigidly supported on one or more legs that run on a fixed rail or runway, the other end of the bridge being supported by a truck running on an elevated rail or runway. Side pull . That portion of the hoist pull acting horizontally when the hoist lines are not operated vertically. Span . The horizontal distance center to center of runway rails. Standby crane . A crane which is not in regular service but which is used occasionally or intermittently as required. Stop . A device to limit travel of a trolley or crane bridge. This device normally is attached to a fixed structure and normally does not have energy absorbing ability. Storage bridge crane . A gantry type crane of long span usually used for bulk storage of material; the bridge girders or trusses are rigidly or nonrigidly supported on one or more legs. It may have one or more fixed or hinged cantilever ends. Switch . A device for making, breaking, or for changing the connections in an electric circuit. Trolley . The unit which travels on the bridge rails and carries the hoisting mechanism. Trolley travel . The trolley movement at right angles to the crane runway. Truck . The unit consisting of a frame, wheels, bearings, and axles which supports the bridge girders or trolleys. Wall crane. A crane having a jib with or without trolley and supported from a side wall or line of columns of a building. It is a traveling type and operates on a runway attached to the side wall or columns. [Statutory Authority: RCW 49.17.010, .040, .050, and .060. 15-24-100 (Order 15-04), § 296-24-[redacted postal code], filed 12/01/2015, effective 01/05/2016. Order 73-5, § 296-24-[redacted postal code], filed 5/9/73 and Order 73-4, § 296-24-[r…
[8] Rules for the Administration of the Oregon Safe Employment Act (Construction, Division 3, OSHA Oregon)
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Oregon Administrative Rules Oregon Occupational Safety and Health Division ## SPECIFIC PURPOSE EQUIPMENT & INSTALLATIONS ## §1926.406 Specific Purpose Equipment and Installations. - (a) Cranes and hoists. This paragraph applies to the installation of electric equipment and wiring used in connection with cranes, monorail hoists, hoists, and all runways. - (1) Disconnecting means. - (i) Runway conductor disconnecting means. A readily accessible disconnecting means shall be provided between the runway contact conductors and the power supply. - (ii) Disconnecting means for cranes and monorail hoists. A disconnecting means, capable of being locked in the open position, shall be provided in the leads from the runway contact conductors or other power supply on any crane or monorail hoist. - (A) If this additional disconnecting means is not readily accessible from the crane or monorail hoist operating station, means shall be provided at the operating station to open the power circuit to all motors of the crane or monorail hoist. - (B) The additional disconnect may be omitted if a monorail hoist or handpropelled crane bridge installation meets all of the following: - (1) The unit is floor controlled; - (2) The unit is within view of the power supply disconnecting means; and - (3) No fixed work platform has been provided for servicing the unit. - (2) Control. A limit switch or other device shall be provided to prevent the load block from passing the safe upper limit of travel of any hoisting mechanism. - (3) Clearance. The dimension of the working space in the direction of access to live parts which may require examination, adjustment, servicing, or maintenance while alive shall be a minimum of 2 feet 6 inches (762 mm). Where controls are enclosed in cabinets, the door(s) shall open at least 90 degrees or be removable, or the installation shall provide equivalent access. - (4) Grounding. All exposed metal parts of cranes, monorail hoists, hoists and accessories in…
[9] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)
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\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ Gantry crane . A crane similar to an overhead crane except that the bridge for carrying the trolley or trolleys is rigidly supported on two or more legs running on fixed rails or other runway. Hoist . An apparatus which may be a part of a crane, exerting a force for lifting or lowering. Hoist chain . The load bearing chain in a hoist. Note: Chain properties do not conform to shown in ANSI B30.9-1971, Safety Code for Slings. Hoist motion . That motion of a crane which raises and lowers a load. Holding brake . A brake that automatically prevents motion when power is off. Hot metal handling crane . An overhead crane used for transporting or pouring molten material. Limit switch . A switch which is operated by some part or motion of a power-driven machine or equipment to alter the electric circuit associated with the machine or equipment. Load . The total superimposed weight on the load block or hook. Load block . The assembly of hook or shackle, swivel, bearing, sheaves, pins, and frame suspended by the hoisting rope. Magnet . An electromagnetic device carried on a crane hook to pick up loads magnetically. Main hoist . The hoist mechanism provided for lifting the maximum rated load. Main switch . A switch controlling the entire power supply to the crane. Man trolley . A trolley having an operator's cab attached thereto. Master switch . A switch which dominates the operation of contractors, relays, or other remotely operated devices. Mechanical . A method of control by friction. Overhead crane . A crane with a movable bridge carrying a movable or fixed hoisting mechanism and traveling on an overhead fixed runway structure. Power-operated crane . A crane whose mechanism is driven by electric, air, hydraulic, or internal combusti…
[10] Occupational Health and Safety Code
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## Maintenance and inspection - 94 A bridge, jib, monorail, gantry or overhead travelling crane must meet the safety requirements of CSA Standard CAN/CSA B167-96 (R2007), Safety Standard for Maintenance and Inspection of Overhead Cranes, Gantry Cranes, Monorails, Hoists and Trolleys . ## Safe movement - 95 An employer must ensure that a crane operating on rails, tracks or trolleys - (a) has a positive stop or limiting device on the crane or on the rails, tracks or trolleys to prevent it from overrunning safe limits or contacting other equipment that is on the same rail, track or trolley, - (b) is equipped with an overspeed limiting device, - (c) has positive means of ensuring that the rails, tracks or trolleys cannot be spread or misalign, - (d) has sweep guards installed to prevent material on the rail, track or trolley from dislodging the crane, and - (e) has a bed designed to carry all anticipated loads. ## Controls - 95.1 An employer must ensure that the controls of an overhead crane are of a constant manual pressure type. ## Personnel Hoists ## Safety code for personnel hoists - 96 Except for a personnel hoist used in a mine, a personnel hoist must meet the requirements of CSA Standard CAN/CSA Z185-M87 (R2006), Safety Code for Personnel Hoists . ## Roofer's Hoists ## Safe use and design - 97 (1) An employer must ensure that a roofer's hoist has counterweights - (a) designed as a component part of the hoist to remain securely attached to the hoist until all lifting is completed, and - (b) heavy enough to counterbalance 4 times the maximum weight of the load being lifted. - 97 (2) A person must not use roofing materials as a counterweight. - 97 (3) An employer must ensure that a roofer's hoist is inspected at reasonably practicable intervals by a competent worker designated by the employer. - 97 (4) An employer must ensure that bolts and pins used to interconnect component parts of a roofer's hoist are equipped with safety pins that prevent them from b…
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Read the threadCreate a safety jobsite inspection checklist for entire building and construction site
Here is a sample safety checklist for a building and construction job site, designed for use in Texas. This checklist is intended to be a starting point and should be customized to fit the specific hazards and conditions of your job site. *Job Site Inspection Checklist** *Date:** *Inspector:** *Site Location:**
Read the threadcreate a safety checklist for a 2 floor interior office fitout
Interior Office Fitout Safety Checklist This checklist is designed to ensure a safe working environment during the interior fitout of a two-floor office space. It covers key safety aspects to be checked regularly throughout the project. *Instructions:** Complete this checklist at the beginning of each shift and after
Read the threadWrite a risk assessment for Electrical safety risks
Electrical Safety Risk Assessment ================================= *Assessment Date:** \[DATE] *Assessor:** \[ASSESSOR NAME] *Department/Area:** \[DEPARTMENT/AREA] *Review Date:** \[REVIEW DATE] 1\. Assessment Scope This risk assessment covers all electrical work activities performed by employees, contractors, and
Read the threadfor a site attendance, what questions should be asked?
During a site attendance or site visit, the key safety objective is to confirm that hazards have been identified, risks assessed, and effective controls implemented before and during the work. A strong site visit should test whether the work is planned, supervised, communicated, and carried out in compliance with the
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