Siemens DigiTRON Series Installation, Operation And Maintenance Manual page 19

Caution. Risk of material damage. Maximum cumulative exposure of the male pins to
seawater is 28 days to prevent corrosion of the pins. If the connectors are to be left
unmated, in seawater, for any length of time Subsea Environment Cap or Dummy Plug
must be fitted to protect the pin contacts in the receptacle connectors. Over exposure will
increase the risk of corrosion damage or marine growth on the contact surfaces of the
receptacle contact pins. This could lead to damage to the seals and insulation within the
plug socket contacts. Plug connectors do not require full dummy connectors for
protection. Siemens Energy Subsea advise the fitting of acetal caps to protect plugs
against marine growth. It is good practice to always fit the protective cap when a
connector is unmated topside prior to deployment to provide mechanical protection.
Caution. Risk of material damage. Unmated receptacles (exposed male pins) should
never be electrically energised subsea (even a small residual voltage). This will very
quickly corrode the pins or cause complete electrical failure of the product.
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Document No: IOM-002
Issue Date: 24/09/2020
Revision: 6
Page: 19 of 42