External aggression on submarine cable remains
the primary cause of cable faults. Activity such as
fishing, anchoring, geological events, abrasion and dredging
make up most external aggression categories. Most faults
continue to occur in less than 200m of water depth. High
performance fault location techniques are key to achieving
economical submarine cable repairs.
Splicer and OTDR
Cable faults can typically be classified
into the following categories: cable break, open fault,
shunt fault or optical fiber fault. Depending on the
cable fault category, the method of cable fault localization
L-3 MariPro engineers are trained in various
methods of fault locating techniques such as single end dc
measurements, single end capacitance measurements, current-balance
method or optical path methods.
State-of-the-art fiber optic and metallic
cable fault localization utilizing long-range optical and
metallic time domain reflectometers (OTDR & MTRD) are
used by experienced L-3 MariPro engineers. Cable faults can
be precisely located and characterized in preparation for
repair operation scenarios. Post cable installation and repair
certification can also be performed.