18
IM_SWi_EX_Rev14
5.9 Sub-Sea Usage
5.9.1 SWi20/25TIEX
SWi20/25TIEX tools are actuated by means of single-
acting spring-return hydraulic cylinder and can be used
sub-sea providing the following actions are taken:
• The pump release valve is fully opened and remains
open until the tool has descended to the working
depth. This will allow the pressure to equalise.
• The tool is actuated via the hand pump by a diver.
• Upon completion of works the release valve is
left in the fully-open position until the tool has
ascended to the surface.
• The tool is stripped-down, cleaned and lubricated
immediately to minimise corrosion.
5.9.2 SWi12/14TMEX
The SWi12/14TMEX is actuated mechanically and can
be used sub-sea providing the following actions are
taken:
• The tool is actuated via the torque-wrench by a
diver.
• The tool is stripped-down, cleaned and lubricated
immediately to minimise corrosion.
5.9.3 SWi20/25TEEX
SWi20/25TEEX tools require a hydraulic hand pump that
is fitted with a sealed-bladder type reservoir system to
allows for sub-sea operation.
The SWi20/25TEEX is actuated by means of single-
acting spring-return hydraulic cylinder and can be used
sub-sea providing the following actions are taken:
1. The gauge and manifold are removed from the
hydraulic hand-pump and the coupler is fitted
directly to the pump outlet.
2. The tool is connected to the hydraulic hand-pump
whilst still top-side.
3. The pump release valve is fully opened and remains
open until the tool has descended to the working
depth. This will allow the pressure to equalise.
4. The tool is actuated via the hand pump by a diver.
5. Upon completion of works the release valve is
left in the fully-open position until the tool has
ascended to the surface.
6. The tool and pump are stripped-down, cleaned
and lubricated immediately to minimise corrosion.
Please note that SWi20/25TEEX cannot
be operated from top-side by use of a down-line. The
return springs in the hydraulic cylinders do not have
sufficient force to close the tool if used with a down-line
from a top-side pump, therefore the standard hydraulic
tools will not function correctly and may jam in place if
used in this configuration.
NOTICE
6. Storage
6.1 Recommended Storage
Equalizer Spreading Wedge tools should be stored in a cool dry place. Tools should always be cleaned, serviced
and lubricated prior to storage. Ensure that tools are stored in their designated packing cases.
6. Once bags have been closed and sealed DO NOT
re-open. Any visual inspections must be done with
closed and sealed bags. If bags are opened the
components will have to be dried, re-coated and
re-sealed in bags/shrink wrap.
7. Replace silica gel [100g] EVERY TIME
the case is opened.
NOTE: depending on moisture content of air, silica
gel should be changed weekly.
8. Visually inspect kits after 30-days and every 30-
days thereafter. Remember to replace silica gel
before closing case.
6.2 Long-Term Storage -
Maintenance Plan
1. Rub components down with a dry cloth to remove
moisture.
2. Coat EVERY surface and contact point with a
corrosion inhibitor. Where necessary, coat inside
and outside of component e.g. VC10
3. Nuts and threads must also be coated with a
corrosion inhibitor.
4. Once surfaces have been coated, seal
individual components in clear plastic bags
or clear vacuum bags or clear shrink wrap.
NOTE: bags/shrink wrap must be clear for visibility.
Take care when using shrink wrap that the tool is /
components are still easy to see.
5. Remove all or, where not vacuum sealed, as much
air from bags as possible.
Содержание Equalizer SWi12/14TMEX
Страница 2: ......