There are three primary ways to haul a vessel out of the water. These include
using a floating drydock, a graving dock, or a marine
railway. Other methods are used to haul vessels such as travel lifts
and synchrolifts.
Moving cranes on wingwalls of drydocks and marine
railway equipment (such as winches, carriage, and stiles) exposes workers to crushing and caught-between hazards.
Assessments need to be conducted to protect employees from fall hazards.
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Figure 1:
Empty graving dock.
Figure 2:
Barge on marine railway.
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Access to Dry Docks and Marine
Railways
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Potential Hazards:
- Workers falling and tripping while boarding a vessel
- Injuries from rotating machinery such as winches, gears, cables, and pulleys
- Falls from wing walls, stiles of marine railways, and catwalks
- Falling into the water from unguarded ends of floating drydocks and
marine railways.
Requirements and Example Solutions:
- An adequate gangway, ramp, or permanent stairway must be provided between a floating
drydock, piers or bulkhead, and for access to wing walls and drydock floors. [1915.75(a),
(b),
(c)]
- The open ends of floating drydocks
must be adequately guarded. [1915.75(e)]
- Cradles or carriages on marine railways must be positively
secured. [1915.115(e)(1)]
- Moving parts and machinery on drydocks must be guarded. [1915.131(d)]
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Figure 3: Vessel in floating dry dock with unguarded ends.
Figure 4: Permanent, properly guarded stairways to dry dock floor.
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