reflexmarine FROG-XT Series, User Manual

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UM-0206(1) 20 | P a g e
3.11 Control of Lifting Assembly during Operations
The FROG-XT is designed to stay firmly on the deck of the vessel whilst passengers are
entering or leaving the capsule. To do so, the Crane Operator must maintain slack in the
lifting assembly upon landing to allow for the vessel movement.
A designated deck crew member should be responsible for managing the position of the
lifting assembly to ensure it remains clear of potential snagging points and that it does not
endanger passengers entering or exiting the capsule. When lifting the capsule deck crew
should ensure the lifting assembly remains safely routed. Only the designated deck crew,
wearing appropriate PPE (i.e. gloves) should manage the position of the lifting assembly.
Using a shorter lifting assembly also increases risks associated with the hook block being in
close proximity to the capsule.
The recommended limits below are based on the use of the standard FROG-XT
lifting assembly length of 30 ft (9 m).
For the use of shorter lifting assemblies, an additional risk assessment combined with dry
runs should be performed to establish safe operational routines and weather conditions.
Table 4 Sling lengths
Sling Length Recommended Slack
Lift Point to Hook
Height
Allowable Drift
Offlead
30 ft 10 ft 20 ft 22.4 ft
20 ft 10 ft 10 ft 17.3 ft
10 ft 8 ft 2 ft 9.8 ft
3.12 Lifting Assembly – Height Clearance
When selecting Lifting Assembly length, please thoroughly evaluate the height
clearances of obstacles during the lift to be conducted: taking into account the
maximum hook height; wire travel (such as limit switches); and the effect the sling length
will have on the lift.
Figure 7 Lifting assembly slack