Shipbreaking

Module 4: Heavy Equipment & Material Movement

4.3 Personnel Hoist & PlatformsSusan Harwood Grant Number SH-17820-08-60-F-23

Disclaimer

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This material was produced under grant number SH-17820-08-60-F-23 from the Occupational Safety and Health Administration, U.S. Department of Labor. It does not necessarily reflect the views or polices of the U.S. Department of Labor, nor does mention of trade names, commercial products, or organizations imply endorsement by the U.S. Government.

Objectives

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Identify operation procedures for cranes and derricks

Describe personnel platform systems List testing and inspection procedures Explain the operations of personnel

platforms

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OSHA has guidelines on personnel hoist platforms.

6Figure 1 Personnel hoist in fishing vessel outriggers

Personnel hoists should be the last resort when all other avenues such as ladders, scaffolds, and other means are exhausted.

7Figure 2 Crane along vessel as it enters the slip

Employee safety should not be compromised for the operation.

8Figure 3 Personnel Lift on superstructure

Cranes pose a risk of tipping and therefore must be on a firm level ground.

9Figure 4 Crane on level ground hoisting

A 1% uniform grade must be maintained.

10Figure 5 Crane on level firm surface

Minimum safety factor of seven for the load line of wire rope and ten for rotation-resistant rope.

11Figure 6 Hoist bridle with screw pin shackles attached

Brakes or locking devices on the crane must be engaged when personnel are working aloft.

12Figure 7 Crane at rest between operations

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The platform must be rated for 5 times the safe working load of the intended lift.

14Figure 8 Load testing crane and rigging

Install a suspension system on the top of the platform to prevent tipping.

15Figure 9 Personnel platform over side of ship conducting hot work operations

Must have a rail to keep personnel from falling out including a toe board.

16Figure 10 Personnel platform with enclosed railing for worker

Load placard is prominently posted on the platform with the load weight and platform weight.

17Figure 11 Worker inside platform conducting hot work on hull

Do not exceed the platform’s rated load capacity.

18Figure 12 Overview of slip with crane hoisting a personnel platform

Bridles and rigging dedicated to personnel hoisting can not be used for any other purpose.

19Figure 13 Personnel hoist on main deck of vessel

Hooks and other attachments must be closed type to prevent opening.

20Figure 14 Closed hook

Mousing the hook is strictly prohibited.

21Figure 15 Mousing hook with line

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A trial lift must be made before workers can be placed in the platform.

23Figure 16 Personnel hoist initial hoist tested

A lift starts at ground level and is then positioned to the vessel.

24Figure 17 Supervisor monitoring movement of personnel platform hoisting

All systems will be evaluated and inspected for safety concerns.

25Figure 18 Personnel platform over side of vessel static

When the position shifts along the vessel a trial test must be completed at the new location.

26Figure 19 Crane along slip stationary

Immediately after the trial lift conduct a complete inspection of the rigging, platform, and crane.

27Figure 20 Supervisors concluding inspection of equipment

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Before personnel can be transported in the platform, the lift has to have all kinks and twist removed from the rigging.

29Figure 21 Rigging being laid out

The platform will be hoisted a few inches above the ground to allow the rigging to settle and check for alignment.

30Figure 22 Hoist in suspension above ground

A competent person must conduct an inspection and test prior to usage.

31Figure 23 Close up of wire rope and rust within the lays of the strands

Prior to the platform coming to the site a 5 minute proof testing, at 125% of the load capacity, must be completed.

32Figure 24 Certified weights for personnel platform hoist

Tag lines are advisable unless they create a unsafe condition or be fouled in the rigging of the vessel.

33Figure 25 Rigging clear of vessel gear on main deck

Personnel shall keep all body parts and equipment inside the platform at all times.

34Figure 26 Workers preparing to board

Personal fall arrest systems must be attached to the lower back and to the platform.

35Figure 27 Personnel fall protection in place and secured

The crane should not be in motion with personnel in the platform.

36Figure 28 Crane is on standby along slip

If the crane must move with personnel, it must be restricted in the distance moved and a trial run should be considered.

37Figur29 View of the crane down the side

Crane operator must be at the controls at all times when the machinery is operating.

38Figure 30 Supervisor monitoring operations over side of vessel

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References

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OSHA eTool www.osha.gov

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Worker safety is a priority