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Overhead crane

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Toolbox Talk: Overhead Crane Safety

Date: [DATE] Duration: [DURATION] minutes Presenter: [PRESENTER NAME] Location: [LOCATION]

Objective

The objective of this toolbox talk is to ensure that all participants understand the safe operation, maintenance, and inspection of overhead cranes to prevent accidents and injuries in the workplace.

Introduction

Overhead cranes are essential for lifting and moving heavy loads in various industries. However, improper use or maintenance can lead to serious accidents, including equipment failure and injuries to workers. Understanding the safety standards and procedures is crucial for preventing such incidents.

Presenter Note: Engage the audience by asking if anyone has personal experience related to crane operations.

Key Points

  • Regular Maintenance and Inspection: Overhead cranes must be maintained and inspected according to CSA Standard CAN/CSA B167-96 to ensure safety and functionality [1].
  • Safe Movement: Cranes must have positive stops, overspeed limiting devices, and sweep guards to prevent accidents [1].
  • Operator Qualifications: Only trained and authorized personnel should operate cranes. Operators must be familiar with crane mechanisms and safety rules [2].
  • Load Handling: Ensure loads are properly secured and balanced before lifting. Avoid sudden movements that could destabilize the load [3].
  • Emergency Procedures: Operators must know how to respond to power failures and other emergencies, such as ensuring all controllers are in the 'off' position [2].

Hazard Identification

Common hazards associated with overhead cranes include:

  • Overloading: Exceeding the crane's rated capacity can lead to equipment failure and accidents.
  • Improper Rigging: Incorrectly attached loads can swing or fall, posing a risk to workers.
  • Mechanical Failures: Lack of maintenance can result in brake failures or other mechanical issues.

Presenter Note: Encourage participants to share any additional hazards they've encountered.

Control Measures

  • Engineering Controls: Install limit switches and overload devices to prevent overloading and ensure safe operation [4].
  • Administrative Controls: Implement regular training and certification for crane operators [3].
  • Personal Protective Equipment (PPE): Ensure operators wear appropriate PPE, such as hard hats and safety shoes, to protect against falling objects.

Safe Work Procedures

  1. Conduct a pre-operation inspection of the crane and surrounding area.
  2. Ensure the load is within the crane's rated capacity.
  3. Use proper rigging techniques to secure the load.
  4. Operate the crane controls smoothly to avoid sudden movements.
  5. Follow established signals and communication protocols during operation.

Presenter Note: If possible, demonstrate the safe work procedure or use visual aids.

Personal Protective Equipment (PPE) Requirements

  • Hard Hats: Protect against head injuries from falling objects.
  • Safety Shoes: Prevent foot injuries from heavy loads.
  • Gloves: Provide grip and protection when handling rigging equipment.

Real-World Example or Case Study

Discuss a recent incident where improper crane operation led to a load drop, resulting in equipment damage and a near-miss for workers. Highlight the importance of following safety protocols and proper training.

Presenter Note: Ask participants if they can relate this example to their own experiences.

Group Discussion

Discuss the following questions:

  1. What are the most common causes of crane-related accidents in our workplace?
  2. How can we improve communication between crane operators and ground personnel?
  3. What additional safety measures can we implement to enhance crane safety?

Presenter Note: Encourage active participation and facilitate the discussion.

Emergency Procedures

  1. Stop all crane operations immediately in case of an emergency.
  2. Ensure all controllers are in the 'off' position.
  3. Evacuate the area if necessary and report the incident to a supervisor.
  4. Follow the company's emergency response plan.

Questions and Answers

Encourage participants to ask questions and provide answers to common questions related to crane safety.

  • Q: What should be done if a crane's limit switch fails during operation?

A: Stop the crane immediately and report the issue to maintenance personnel.

  • Q: How often should cranes be inspected?

A: Cranes should undergo frequent inspections daily to monthly and periodic inspections every 1 to 12 months [5].

Summary

Recap the main points covered in the toolbox talk:

  • Importance of regular maintenance and inspection.
  • Safe operation and load handling procedures.
  • Proper training and certification for crane operators.
  • Emergency response procedures.

Action Items

List specific actions participants should take following this toolbox talk:

  1. Review and familiarize yourself with the crane's operating manual.
  2. Participate in regular safety training sessions.
  3. Report any crane malfunctions or safety concerns immediately.

Remember: Safety is everyone's responsibility. Always follow safety protocols and report hazards immediately.

Report all hazards, near-misses, and incidents to your supervisor immediately.

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5 source record(s)

Sources used for this answer

[1] Occupational Health and Safety Code

Page 82

Open source document

Source excerpt

## Limit devices 101 (1) An employer must ensure that a tower crane is equipped with - (a) an overload device consisting of a hoist overload switch that automatically restricts the weight of the load, - (b) a travel limit device consisting of a moment overload switch that automatically restricts the radius within which the load can travel, - (c) a height limit switch that prevents the load from being overwound, and - (d) trolley travel limit devices consisting of a 'trolley in' limit switch and a 'trolley out' limit switch that prevent the trolley from running to the end of its track and falling off. 101 (2) An employer must ensure that the devices described in subsection (1) are adjusted and set in accordance with the manufacturer's specifications and have their limit switches sealed. ## Operation 102 An operator of a tower crane must - (a) ensure the safe movement of the crane and its load at all times, - (b) verify at the beginning of each work shift that the mast is plumb, and - (c) verify at least once in each 24-hour period that the limit devices described in section 101 are operational. ## Changing components 103 (1) An employer must ensure that the major structural, mechanical and electrical components of a tower crane are not interchanged with those of other tower cranes unless - (a) the components are from the same make or model of tower crane, - (b) the components are approved by the manufacturer as suitable for their intended application, or - (c) the components are certified by a professional engineer as suitable for their intended application. 103 (2) An employer must ensure that if an operator's cab is attached to the boom of a tower crane, the design of the cab, its position, method of attachment and any structural changes, including changes to the counterweight, capacity and operation of the crane, are in accordance with the manufacturer's specifications or are certified by a professional engineer. ## Test weights 104 (1) An employer mus…

[2] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

Page 33

Open source document

Source excerpt

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (i) When two or more cranes are used to lift a load one qualified responsible person must be in charge of the operation. The qualified person must analyze the operation and instruct all personnel involved in the proper positioning, rigging of the load, and the movements to be made. - (j) The employer must assure that the operator does not leave the control position while the load is suspended. - (k) When starting the bridge and when the load or hook approaches near or over personnel, you must sound the warning signal. ## (4) Hoist limit switch . - (a) At the beginning of each operator's shift, the operator must try out the upper limit switch of each hoist under no load. Extreme care must be exercised; the block must be 'inched' into the limit or run in at slow speed. If the switch does not operate properly, the appointed person must be immediately notified. - (b) You must never use the hoist limit switch which controls the upper limit of travel of the load block as an operating control. [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] Operators. - (1) You must ensure that cranes are operated only by regular crane operators, authorized substitutes who have had adequate experience and training under the supervision of a competent operator, or by crane repairmen or inspectors. - (2) You must ensure that crane operators are able to communicate with others …

[3] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

Page 34

Open source document

Source excerpt

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (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 …

[4] Safety Standards for General Safety and Health Standards (Chaper 296-24 WAC)

Page 28

Open source document

Source excerpt

\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_ - (h) You must ensure that replacement rope is the same size, grade, and construction as the original rope furnished by the crane manufacturer, unless otherwise recommended by a wire rope manufacturer due to actual working condition requirements. - Equalizers . You must ensure that the tension in the parts is equalized if a load is supported by more than one part of rope. - Hooks . You must ensure that hooks meet the manufacturer's recommendations and are not overloaded. Safety latch-type hooks must be used or the hook must be moused. [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: RCW 49.17.040, 49.17.050, 49.17.240, chapters 43.22 and 42.30 RCW. 80-17-015 (Order 8021), § 296-24-[redacted postal code], filed 11/13/80. Statutory Authority: RCW 49.17.040, 49.17.150, and 49.17.240. 79-08-115 (Order 79-9), § 296-24-[redacted postal code], filed 7/31/79; 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] Warning device. You must provide a gong or other effective warning signal for each crane equipped with a powered traveling mechanism except for floor operated cranes. [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-[redacted postal code], filed 5/7/73.] ## WAC 296-24-[redacted postal code] Inspection. - Inspection classification . - (a) You must perform an initial inspection prior to initial use all new and altered cr…

[5] Occupational Health and Safety Code

Page 80

Open source document

Source excerpt

## 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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