Marine and Underwater NDT with Cygnus
Posted: 2014-9-15
In the marine and shipping industry, where steel corrosion is a constant
challenge, Cygnus ultrasonic thickness gauges play a major role in providing a
solution to this challenge.
The Cygnus Multiple-Echo technique has been recommended and endorsed by
the world’s leading classification societies for measuring the remaining metal
thickness through protective coatings. The Multiple-Echo technique provides
accurate and reliable measurements, this measuring technique can sometimes be
difficult to achieve when measuring on, extreme front face and back wall
corrosion and round bars such as anchor chain links. This is why Cygnus has
introduced Single-Echo, using twin-crystal probes, into their product range -
providing users with the flexibility to alternate between the two, starting with
Cygnus DIVE...
Underwater Thickness Measurements
Cygnus DIVE is a wrist-mountable underwater thickness gauge providing an
invaluable free-hand while performing remaining metal thickness measurements.
Originally launched two years ago, the DIVE now has a number of key new
features:
Twin-crystal probe option to assist in taking measurements on uncoated
material e.g. anchor chain links, extremely corroded steel and plastic outfall and
dredge pipes
Measurement Stability Indicator (MSIä EXCLUSIVE TO CYGNUS THICKNESS
GAUGES, this shows when a reading in single-echo mode is stable by turning the
thickness reading from red to yellow
A super bright AMOLED display, easily viewable by both the diver and his
camera, in the poorest visibility
Updated topside and reporting software allowing measurements and A-Scans to
be displayed on the surface and data logged topside.
The ability of the diver to wear Cygnus DIVE on his arm or wrist is a big
advantage says Graham Haines, Sales Director for Cygnus. Having a free-hand
when diving offers obvious advantages and together with the AMOLED display,
makes viewing so much easier by both the diver and support engineers on the
surface via the diver’s camera. The AMOLED display not only gives much better
viewing, especially in poor visibility, it also offers an A-Scan display which helps
verify true back wall readings in difficult measuring applications. In data-logging
mode Cygnus DIVE can store up to 5,000 measurements together with each
measurement A-Scan for future analysis, should the need arise.
Ultrasound can also be used for checking the weather tightness of hatch cover
seals on bulk carriers...
Cygnus Hatch Sure ultrasonic hatch cover leak detection system comprises a
powerful ultrasonic transmitter with 19 x 40 KHz elements which is placed within
the ships hold. This fills the hold with ultrasound and any that escapes (through
gaps in damaged areas of the seals) can be detected by the operator on deck
using a sensitive receiver/listening device, locating areas that might leak in
heavy seas or rain.
This offers many advantages over the conventional technique of hose testing
which uses large volumes of water sprayed at the rubber seals. Ultrasound can
be used in sub zero temperatures, identifies the precise damaged area of seals,
is repeatable and avoids pollution of harbours due to contaminated water.
challenge, Cygnus ultrasonic thickness gauges play a major role in providing a
solution to this challenge.
The Cygnus Multiple-Echo technique has been recommended and endorsed by
the world’s leading classification societies for measuring the remaining metal
thickness through protective coatings. The Multiple-Echo technique provides
accurate and reliable measurements, this measuring technique can sometimes be
difficult to achieve when measuring on, extreme front face and back wall
corrosion and round bars such as anchor chain links. This is why Cygnus has
introduced Single-Echo, using twin-crystal probes, into their product range -
providing users with the flexibility to alternate between the two, starting with
Cygnus DIVE...
Underwater Thickness Measurements
Cygnus DIVE is a wrist-mountable underwater thickness gauge providing an
invaluable free-hand while performing remaining metal thickness measurements.
Originally launched two years ago, the DIVE now has a number of key new
features:
Twin-crystal probe option to assist in taking measurements on uncoated
material e.g. anchor chain links, extremely corroded steel and plastic outfall and
dredge pipes
Measurement Stability Indicator (MSIä EXCLUSIVE TO CYGNUS THICKNESS
GAUGES, this shows when a reading in single-echo mode is stable by turning the
thickness reading from red to yellow
A super bright AMOLED display, easily viewable by both the diver and his
camera, in the poorest visibility
Updated topside and reporting software allowing measurements and A-Scans to
be displayed on the surface and data logged topside.
The ability of the diver to wear Cygnus DIVE on his arm or wrist is a big
advantage says Graham Haines, Sales Director for Cygnus. Having a free-hand
when diving offers obvious advantages and together with the AMOLED display,
makes viewing so much easier by both the diver and support engineers on the
surface via the diver’s camera. The AMOLED display not only gives much better
viewing, especially in poor visibility, it also offers an A-Scan display which helps
verify true back wall readings in difficult measuring applications. In data-logging
mode Cygnus DIVE can store up to 5,000 measurements together with each
measurement A-Scan for future analysis, should the need arise.
Ultrasound can also be used for checking the weather tightness of hatch cover
seals on bulk carriers...
Cygnus Hatch Sure ultrasonic hatch cover leak detection system comprises a
powerful ultrasonic transmitter with 19 x 40 KHz elements which is placed within
the ships hold. This fills the hold with ultrasound and any that escapes (through
gaps in damaged areas of the seals) can be detected by the operator on deck
using a sensitive receiver/listening device, locating areas that might leak in
heavy seas or rain.
This offers many advantages over the conventional technique of hose testing
which uses large volumes of water sprayed at the rubber seals. Ultrasound can
be used in sub zero temperatures, identifies the precise damaged area of seals,
is repeatable and avoids pollution of harbours due to contaminated water.
