Reflex Marine WAVE4 - Control of Lifting Assembly

Rev 1.0
15
3.6 Control of Lifting Assembly
Upon landing the WAVE upon a vessel, the crane operator should pay out sufficient slack so
that the WAVE remains stable on deck allowing for vessel motions. A designated deck crew
member should manage the position of the lifting assembly to ensure:
• It remains clear of potential snagging points
• It does not encroach into the capsule.
• It is not a hazard for passengers entering or exiting the capsule.
• When lifting the capsule ensure the lifting assembly remains safely routed
• Only the designated deck crew, wearing appropriate PPE (i.e. gloves) should
manage the position of the slings.
Parameter
Recommendation
Ideal lifting
assembly length
The recommended limits in this section are based on the use of the
standard wire rope lifting assembly length of 6 m / 20 ft.
Shorter lifting
assemblies
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.
Using a shorter lifting assembly set also increases risks associated
with the hook block being in close proximity to the capsule
Table 5 Control of Lifting Assembly
Lifting
assembly
Length
Recommended
Slack
Allowable Drift
Distance to the
Crane Hook
6 m
20 ft
3 m
10 ft
5.2 m
17 ft
3 m
10 ft
4 m
13 ft
1.5 m
5 ft
3.1 m
10 ft
2.5 m
8 ft
Table 6 Lifting Assembly Lengths
Figure 3 Lifting assembly slack
6 m / 20 ft
3 m / 10 ft
5.2 m /
17 ft