SWP 025 Mechanical Lifts and Suspended Loads

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SAFE WORK PROCEDURESWP-025

Issued: July 12, 2013

Reviewed: July 12, 2013Mechanical Lifts and Suspended Loads.

GENERAL Protecting workers from injuries associated with use of Extension Ladders.

APPLICATION Protecting workers from injuries associated with mechanical lifts and suspended loads.

PROTECTIVE

MECHANISMS

Safe work procedure

PPE

Pre-operation assessment of equipment, rigging and surroundings.

Barricades and warning signs as appropriate

SELECTION

AND USE

As per job requirements

SUPERVISOR

RESPONSIBILITY

1. Facilitate and/or provide appropriate training as necessary to their workers on

mechanical lifts.

2. In higher-profile planned lifts, ensure that an assessment of the situation is carried out to

identify and eliminate excessively hazardous conditions and that the appropriate control

measures are in place before the lift is attempted.

3. Monitor mechanical lifting operations by workers and ensure that all workers use safe

work practices and that unsafe use of the tool is identified, and corrected.

4. Ensure that the Safe Work Procedures of “ Mechanical Lifts and

Suspended Loads” are followed.

WORKER

RESPONSIBILITY

1.

Read and follow all of the provisions of SWP-022 – Mechanical Lifts and Suspended

Loads.2. Construction site lifts - using on-site equipment

a. This practice refers to lifts at construction sites, not to lifts using small mechanical lifts

controlled by PMAL employees although many of the same instructions would apply to

both situations.

b. All rigging done to enable overhead lifts shall be done by an employee that has had

training in basic rigging (Trade-school training is sufficient for this purpose)

3.

Sling Standards:

a. All slings used in rigging a load shall be manufactured and marked with the rated

strength according to ASME Standard B30.9-1996 Slings.

4. Rigging Inspection:

a. Due to the nature of our work, the majority of mechanical lifting equipment and

rigging used by our personnel will be the property of others and their use will be

controlled by the Prime Contractor who is responsible to ensure that proper

certifications, maintenance and inspection processes are carried out. However, if any

PMAL employee has cause for concern about the condition or safety of the equipment or

rigging used in a planned lift, he/she shall bring it to the attention of the Site Supervisor

who is then responsible to investigate to determine that the questionable equipment or

rigging is safe for use before PMAL employees may work with it.

b. Slings used by PMAL employees to suspend loads shall be inspected by a

competent employee (one that has received rigging training) and shall be in serviceable

condition. Rejection criteria as specified in sections 305 – 309 shall be applied.



c. Ensure that the appropriate safety latches are on all hooks used.

5.

Planning the lift:a. Ensure that the lift can be carried out safely. Ensure that the load will not pass over

other people, or notify the people about the lift. Erect warning signs or post personnel to

ensure that people do not enter or remain in the area under the suspended load.

b. Verify that there is a place to put the load down safely.

c. Attach tag lines where these are necessary and ensure that there is no possibility that

people using the tag lines will be injured due to falls, pinch points or being struck or

crushed by the load.

d. Designate one person to direct the operator of the lifting device and have that

person don high visibility clothing where appropriate. The lifting device operator

shall take instruction from only the designated person.

e. Identify/assess any potential problems or areas of interference such as stacked

material, overhead power lines or trees etc. and develop appropriate controls for these

hazardous situations.

f. Consider atmospheric and wind conditions and take the appropriate action.

g. Arrange signaling processes and ensure that the lifting device operator and the

designated person are both familiar with the processes.

6. Basic Rigging;

a. Evaluate the load:

i. Determine or estimate the weight of the load and ensure it falls below the rated

capacity for the weakest part of the rigging system and lifting device.

ii. Estimate the center of gravity of the load and position the lifting equipment

over the center of gravity.

b. Attach the slings to the load:

i. normally at least two points of attachment are appropriate

– spanning the center of gravity.ii. Use slings of the proper length. Never shorten a sling by twisting or knotting.

This not only weakens the sling but it may destroy it for future use.

iii. On chain slings, never use bolts and nuts to secure or shorten the chain.

c. Lifting the load:

i. When all the hazard control measures that were planned are in place, the lift

can proceed.

ii. The designated signaler shall verify that all personnel are “in the clear” and

shall take control of the lifting area. Only when it is safe will the designated

signaler signal the lifting device operator to continue.

iii. When it is believed that the load is adequately secured, ensure all personnel

are well clear and lift the load slightly and stop it to evaluate the rigging.

iv. If the load is suspended adequately and safely, proceed with the lift.

d. Suspended loads

i. No IPH employee may ever ride a suspended load.

Doing so is grounds for immediate dismissal. Although it is not anticipated that

any exception to this rule will ever be made, it is always possible that an

exceptional situation might arise where this is necessary. In such a situation,

contact one of the owners for permission to make the exception.

ii. Never allow a load to remain suspended when the lifting device is unattended.

SWP 025 Mechanical Lifts and Suspended Loads

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