Siemens DigiTRON Series User Manual

Document No:
IOM-002
Issue Date:
24/09/2020
Revision:
6
Page:
37 of 42
Unrestricted
9.6 Removal of marine growth and calcareous deposits
To remove calcite growth from Siemens Energy Subsea connectors, a solution of 50% Citric Acid is
recommended. All seawater exposed elastomeric materials in Siemens Energy Subsea connectors
have been fully tested against 50% Citric Acid and are compatible for a duration of 1 hour. In addition,
the thermoplastic materials have a good resistance to citric acid.
Warning. Risk of minor personal injury to persons with sensitivities to a solution of 50%
Citric Acid, should wear appropriate hand and eye protection when handling.
Caution. Risk of material damage. Other acid cleaners, such as 50% Acetic Acid, should
not be used as they may cause deterioration of the elastomeric materials.
Caution. Risk of material damage. Chiselling and abrasive methods are not
recommended. Use of a water jet is acceptable, but the jet should not be directed into the
shuttle pins at the front of the plug as this could result in a risk of water being forced through
the primary seals.
9.7 Testing of product
Refer to section 7.2.5
9.8 Checks before mating the product
Transport and topside protection caps must be removed before subsea deployment
Before mating, the receptacle connector (male pins) should be checked for debris and damage. The
connectors have been designed to accommodate sand and silt contamination; however large pieces
of debris should be removed. Use a water jet if subsea, but do not direct the water jet at the front
face (seals) of the plug connector
Inspect the receptacle pins for any signs of damage, such as bent pins, blackening due to electrical
faults, or corrosion of the pins (green colour) or others in section 8.2.
If evidence of such faults exists, do not use the connector. Please contact Siemens Energy Technical
Support for advice.
9.9 ROV connectors mating and de-mating
ROV connector alignment and mating
Refer to Figure 24 for images of alignment marks and mating
• DigiTRON connectors have been designed to self-align during mating.
• The connectors must be roughly aligned using the alignment marks on the plug body,
flange and receptacle cone.
• The mounting of the ROV handle has sufficient compliance to accommodate fine
adjustments during the final approach prior to connector engagement.
• Ensure correct orientation of the alignment disc
• It is important that the ROV compliant flange is orientated correctly.
• Observe the text on the flange and orientate accordingly.

Siemens DigiTRON Series Specifications

General

Brand	Siemens
Model	DigiTRON Series
Category	Cables and connectors
Language	English