Health and Safety

Health and Safety

Like in any kind of industry, there are also hazards associated with offshore wind industry. In this section some hazards and consequences (caused by a particular hazard) will be described. Table 9 below shows hazards associated with the use of jack-up, mother ship and CTV. The presented information are based on [9] and [10]. The probabilities of those hazards occurring are not included as it was not included in the scope of the project.

Table 9a: Potential hazards and Consequences caused by CTV

CTV

Hazard

Potential Consequences

Vessel motion

•Sea Sickness
•Loss of balance,
•General illness causing weakness and dehydration

Unfamiliarity with vessel systems

• Fire and other emergencies, resulting in injury and death

Uncontrolled movement around the vessel

•Minor injury
•Falling overboard
•Cold water shock/ hypothermia
•Drowning

Slips, trips and falls

Minor injury
•Falling overboard, hypothermia
•Drowning

Leakage

•Minor environmental damage, which could increase with the number of CTV operating at a site
•Health damage to technicians

Vessel not available (when chartering)

• Lost time
•Downtime of a wind turbine(s) extended

 

Table 9b: Potential hazards and Consequences caused by Mothership

Mothership

Hazard

Potential Consequences

Fall from gangway

•Injury from impact with sea
•Cold water shock/ hypothermia
•Drowning

Dropped object from gangway

• Minor injury
•Damaged gangway

Gangway collapse

•Minor injury
•Damaged gangway
•Fall from a gangway
•Drowning if falling into the water

Accident during boarding/disembarking gangway

•Injury or death from failing at height •Drowning if falling into the water

Slips, trips and falls

•Minor injury
•Falling overboard, hypothermia
•Drowning

Leakage of a fuel

•Minor environmental damage, which could increase with the number of CTV operating at a site
•Health damage to technicians

Vessel not available (when chartering)

• Lost time
•Downtime of a wind turbine(s) extended

 

Table 9c: Potential hazards and Consequences caused by Jack-up

Jack up

Hazard

Potential Consequences

Hitting subsea cables/pipelines

•Damage to cables/pipelines
•Pollution as a result of broken pipeline
•Damaged jack-up legs or spudcans

Collision with wind turbine or other structure

•Deterioration of a structure
Damage to vessel

Positioning jack up on a slope

•Incapacity to position vessel correctly
•Possibility of vessel loosing balance
•Damage to vessels’ leg
•Depending on the scale of the damage, workers could experience minor or major injuries

Jacking system mechanical failure

•Unable to use jacking system
•Not possible to move vessel above sea level
•Danger to workers

Crashing into other vessels

•Damaged legs of a jack up 
•Possibility of jack up loosing balance
•Collapse and destruction of the vessel

Storm/Bad weather conditions

•Loss of balance
•Possibility of sliding off the foundations
•Structural damage
•Disintegration of the vessel
•Vessel collapses

Crane failure

•Possibility of workers getting hurt
•”load suspended”

Vessel not available (when chartering)

• Lost time
•Downtime of a wind turbine(s) extended