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Document Number: 0072
Rev. 09
CONTROLLED COPY
10. INSTALLATION
10.1 CONNECTOR & PENETRATOR INSTALLATION
It is recommended that the installation of all SpecTRON Penetrators and Mounted Connectors is
undertaken by Siemens Subsea site engineers or trained personnel.
10.2 HOSE COMPENSATION
The hose within a pressure balanced oil filled (PBOF) jumper performs two functions:
mechanical protection to the cables inside and forming a primary barrier between the
electrical insulation and seawater. The cable is not fixed and can move within the hose volume,
testing by Siemens Energy has shown that the three conductors lay next to each other at the bottom
of the hose in direct contact with the hose inside diameter.
The oil volume within a hose is compensated through changes in the cross-sectional profile of the
hose.
Figure 17
- Hose Profile, (left to right), as filled, and when compensating
AquaTRON 200 harnesses (Orange Hose) are provided from factory with a 10bar internal
overpressure, however due to the flexible nature of the materials involved it is possible that some
over pressure may be lost during shipping and storage. This is dependant on a no. of factors
including length and temperature. However a positive pressure will always be maintained and no
flattening of hose should be observable topside.
Once deployed a certain amount of flattening is expected (dependant on deployment depth), this is
an ordinary occurrence related to the compensation system of the harness. Harness is designed to
equalise the pressure between the external seawater depth pressure and the internal oil filled hose.
The amount of compression is directly related to depth pressure, but all depth extremes have been
considered. As long as harness is routed to MBR there shall be no adverse effects to electrical
conductors within hose (see section 10.3 for guidance on routing).
Should any kinking (abrupt change in direction below MBR) of the hose be observed, the harness
should be re-routed/deployed to try and remove the feature. If this continues it could indicate a lack
of internal pressure. In which case the harness should be recovered for further inspection topside,
including:
•
Thorough visual inspection of the retrieved jumper for damage and correct
shape, indicating the hose pre-charge pressure remains acceptable.
•
Insulation resistance measurement to validate the electrical performance of the jumper.
Note:
1.5” Gorilla Harnesses (Yellow Hose) are not provided with an internal over
pressure, this is not required at their rated depth of deployment. However the guidance
below should still be followed.
Summary of Contents for SpecTRON 5
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