WEEKLY INSPECTION

Grid system

It is recommended that all of the components of the grid system be inspected on a weekly basis. These components are in the depth range determined by the length of the chains under the grid buoys.

Usually, the connections between ropes, chains, rings or plates and surface buoys are made with shackles, which represent the primary weak point in the whole structure. In weekly inspections, divers must verify that:
All the shackles are properly locked and their split-pins are present.
The buoy chains have not been worn or corroded, and are not excessively colonized by biofouling organisms.
The rings or the plates have all their elements in order.
The ropes do not show any fraying or other abrasion, and are not excessively colonized by biofouling organisms.
The buoys do not have any cracks in their PVC external covering, and are not excessively colonized by biofouling organisms.

 

Collar and mooring lines

The above-water components, including the cage collar, should also be inspected. Inspectors should verify that:
The plastic frame of the cage is not damaged (in the submerged parts, as well as in the emergent parts) and all of its components, such as the main cage rings, brackets and handrail, work properly.
The bridle ropes of the cage are tied tightly and the knots are secure. These bridle ropes may suffer damage from the service boats (approaching and mooring).