Akva SUBSEA FEEDER Manuel de l'utilisateur - Page 15

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6 MAINTENANCE

An AKVA Subsea Feeder will, when treated correctly last for 5 years. Do not use the feeder if

damage that may impact the construction is caused to it before 5 years have elapsed. Such

damages must be repaired before the feeder is used.

Following a storm, impact from a boat and similar unforeseen events, the entire unit must be

inspected as soon as possible. This can be done in the sea with a diver or ROV, or by lifting

the entire unit out from the sea for control. It is important to check all welding points, flanges,

connections and attachments, and ensure that there is no damage, such as of holes, dents or

other damages to the various components.

AKVA Subsea Feeder must not accumulate high amount of biofoul, as this causes unwanted

weight to the construction, and thus not function as expected. Visually control how the feeder

floats in the sea: the floating collar shall always be visible and the cyclone kept so high that it is

not filled with water due to waves.

Check with an underwater camera underwater, preferably at the same time as divers or ROV

are inspecting the cage periodically.

If significant growth of shells and barnacles is detected on the sinker tube, it is important that

this is removed immediately, as this may come into contact with the net when it is pulled in to

the pen edge. This may damage the net, and the consequent danger of escape.

AKVA Subsea Feeder may be lifted out of the net and cleaned with a high pressure cleaner.

When the feeder is out of the water, check all components for damages.

Icing may occur during the winter season, and all ice must be removed, as this also affects

weight and stability of the AKVA Subsea Feeder.

Both pump hose and the riser pipe have a strainer at the water inlet. These must be checked

every month during periods of high temperatures/summer season, and must be cleaned if thwy

are exposed to biofouling. Rinse with water and scrape gently if necessary. Be careful not to

damage the strainer surface. A cleaned strainer is important for proper water intake.

If any of the equipment, ropes or other components are being moved to a new location, it is

legally obligated to disinfect everything to prevent potential contamination. We recommend

rinsing the equipment with fresh water after disinfection, since disinfectants tend to contain

corrosive chemicals that may damage surfaces.

To maximise the service life, it is important to have the AKVA Subsea Feeder serviced regularly.

The various tasks required to maintain the AKVA Subsea Feeder are divided into daily, weekly,

monthly and biannual (every six months) procedures.

All performed maintenance tasks must be recorded on a dedicated form, to ensure they are

performed according to the correct maintenance schedule. Use signatures/initials to track who

has carried out the various tasks, and remember to fill in relevant date/week/year for each

completed task.

DOCUMENT NO:

DOCUMENT PART:

DC10000901

10001800

REVISION NO: