Document ID: chunk:federal_register_of_legislation:F2018L01173:body:0:p102
Version: federal_register_of_legislation:F2018L01173
Segment Type: other
Provision Reference: 
Character Range: 264323–267211

and pre-slinging arrangements should be suitably de-rated to take account of the expected sea conditions during discharge at the offshore installation.

As far as is practicable, all crane lifts made from or onto a supply vessel should not be lifted directly over the vessel if the height of the lift above the vessel exceeds 3 metres inclusive of any swell which may be in existence. Once the height of the lift exceeds 3 metres, the remainder of the lift should be made over water.

21.4 Offshore Transfer of Personnel
Various methods may be used to transfer personnel to or from a vessel whilst it is offshore. The preferred method of undertaking such transfers will normally be by helicopter or where conditions are suitable, a small boat specifically designed to move personnel. Fast rescue craft should not be used for this purpose as they are intended for emergency operation only.

If these methods are unavailable, 'Frog' personnel transfer capsules, transfer baskets or other forms of carrier lifted by a crane on the facility may be used. In general, baskets or carriers incorporating a rigid frame which provides protection for occupants are preferable.

The risk management process should be followed whenever personnel transfers are considered. Personnel transfer should include the following general precautions:

       The capacity of the personnel transfer basket, carrier or craft as determined by the manufacturer of the equipment must not be exceeded at any time.

       The suitability of the vessel to carry out a transfer should be determined by its ability to maintain station alongside the installation and have sufficient clear deck space to safely receive the carrier.

       Personnel should be briefed on the correct means of boarding, riding and disembarking the carrier. A person to be transferred who is not sufficiently experienced or trained should not be permitted to transfer unaccompanied.

       Personnel transfer should generally not proceed where the prevailing conditions include one or more of the following:

         * Wind speeds in excess of 20 knots (10 metres / second) at height of 10 metres above sea level.
         * Significant wave heights in excess of 2.5 metres.
         * Horizontal visibility of less than 500 metres, vertical visibility of less than 100 metres.
         * Heavy accumulations of snow or ice on landing areas, access and egress routes.
       Supervisors and operators of equipment used in transferring personnel between offshore installations and/or vessels should be competent to undertake the tasks assigned to them.
       Wherever possible, supervisors should have a clear view of all phases of the entire transfer operation.
       The means of communication between the various personnel involved in the transfer operations should be determined as part of the risk management process. All such