User Manual: Generic Section
Section: Introduction 0-4
Revision: 00
Page
21 of 21
If there are any chemical fumes when the vent plug is released, or signs of deposit around the vent
exterior, these are signs that the battery has vented due to water ingress or electronic/battery
malfunction. In these circumstances the battery pack and internal electronics may have been severely
damaged.
Take extreme care when removing the end cap, using any additional precautions detailed in the
individual product manuals. There may be a possibility of some residual pressure remaining, within the
housing, if during operation of the vent valve it becomes blocked with the products of the internal
chemical reaction.
When the battery is removed it should be covered with dry sand, or preferably sodium carbonate, or a
mixture of 1:1 soda ash and slaked lime. It should be placed in an approved container (after cooling if
necessary) and disposed in accordance with local regulations.
The electronics, end caps and pressure housings should be thoroughly hosed down.
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INSTRUMENT LOAD BEARING CAPABILITY
Navigational Transponders are not designed to take in-line loads greater than the maximum upthrust applied
by the floatation equipment. The carrying straps, if fitted, are for ease of manual handling and the range of
transducer guards selected for their acoustic properties.
The Safe Working Load (SWL) capability of the release mechanism, built into instruments, can only be used
for in-line lifting operations with the applicable lifting strap, transducer guard, buoyancy collar eyes or other
safe method is selected.
It is the operator’s responsibility to make sure the condition of the equipment and a safe lifting method is
being used for any operation.
Sonardyne’s range of Oceanographic Release Transponders is designed specifically for in-line lifting
operations.
Appropriate shackles must be used in release systems to ensure freedom from corrosion. It is important to
note that instruments, their release mechanisms and shackles form part of an integrated and complete
system.
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FLOATATION EQUIPMENT
Floatation equipment is fitted to subsea transponders to aid their recovery after a deployment is complete. A
nett upthrust requirement is in the technical data for any particular instrument.
The maximum water depth quoted for a float must not be exceeded. Over-pressured floats are forced to
absorb water and their weight in air thus increases. All floats should be weighed prior to use to check that
they are maintaining their original manufactured weight.
Summary of Contents for 8142-000-01
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