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Cygnus FMD System for Diver

Designed specifically by Cygnus for Flooded Member Inspection (FMI) – using decades of experience of ultrasonic testing in the subsea inspection industry, the Cygnus FMD system detects ingress of water in subsea structural members using ultrasound. This ultrasonic testing (UT) solution boasts intelligent software and cutting edge electronics combined with a truly simple to use interface to give a clear DRY or FLOODED result that can be trusted.

Once the subsea unit is deployed by the diver, the Cygnus FMD system runs a test using the FMD software at the surface; a simple DRY (Green) or FLOODED (Red) result will be shown, alongside the waveform (A-scan) for further verification. The results are logged for analysis and for reporting as PDF and Excel.

EASY TO USE

The innovative and agile transducer handling solution “self-aligns” with the surface and ensures correct contact with the target member – regardless of what angle or direction of approach. When a diver only has one hand free, this aspect of the Cygnus FMD really sets it apart from the competition.

Only when the next intelligent element of the system is engaged (a contact sensor telling the team at the surface that good, appropriate contact has been made) will a simple DRY / FLOODED result be displayed and logged.

COST EFFECTIVE

Due to the clever and failsafe aspects of the system’s design, the Cygnus FMD is very easy to learn and can be used by owners or operators with varying levels of UT experience. The need for specialist external contractors is removed.

RUGGEDIZED

The FMD equipment is designed to the highest standards, supported by a three year warranty.

RELIABLE

Cygnus is an ultrasonic specialist. 4 decades of industry experience and design expertise combine to make this system the most advanced, effective and reliable Ultrasonic FMD System available.

The purpose-designed algorithm simultaneously uses:

  • an advanced peak detection algorithm
  • low distortion / low noise data acquisition
  • advanced signal processing

all of which ensure the highest level of Probability of Detection (PoD) and the elimination of false readings.

The FMD system only allows for a measurement to be taken when the contact sensor detects transducer contact – ensuring reliable results every time. The reporting software will indicate at the surface if the transducer loses contact during inspection.

The system features a System Test Function that ensures the system’s reliability before deployment.

VERSATILE

The transducer solution is compact and allows for tests to be done on hard to reach areas such as K nodes where other inspection methods cannot operate.

A selection of options is available to suit working depths and varying requirements.

This FMD system is also deployable by ROVs.

Specifications
Transducer 0.5 MHz high power piezo composite transducer – single element
Measuring Range 200 – 2000 mm member diameter
Resolution 1 mm
POWER
Diver Communications PSU 110-240 AC 50/60 Hz @ 1A (max)
ROV Power Supply 12 to 24 volt D.C @ 60mA
COMMUNICATIONS
Digital RS232 & RS485
Baud Rate 115,200
Date Capture On demand 3 shot and varying gain levels
Diver Data Link RS485 half – duplex
ROV Date Link RS232 full – duplex suitable for fibre multiplexers
PHYSICAL
Acetal Electronics Body 0.9 kg (95 mm (diameter) x 115 mm (height))
Stainless Steel Electronics Body 4 kg (95 mm (diameter) x 115 mm (height))
Acetal Transducer Handler 2.5 kg (140 x 170 x 130 mm)
Stainless Steel Transducer Handler 4.7 kg (140 x 170 x 130 mm)
120m Umbilical Cable 23 kg (340 x 450 x 555 mm)
350m Umbilical Cable 87 kg (450 x 600 x 930 mm)
50m Deck Cable 13 kg (290 x 380 x 490 mm)
Depth Rating 300 msw
Operation Temperature 0°C to +75°C
Storage Temperature -40°C to 55°C

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