Metal
Thickness Gauge Inspection
SubNet
use its VideoRay ROV's coupled with Cygnus Instruments
thickness probe to target applications, such
as inside pipelines, that have previously been
unfeasible using divers or large ROVs.
- Metal
Thickness Corrosion Checks on Offshore Structures,
Ships and Wrecks
- Safety
Corrosion Monitoring of Pipelines and Storage
Vessels
-
Metal Thickness Wear Checks on Jetties, Dock
Gates, Piers, and Pilings
- Ships
Classification Surveys
- Maintenance
and Safety Checks on Bridges.
The
system has recently been proven inside the USS
Arizona battleship, the system is less expensive
than the cost of diving excursions to measure
thickness underwater and is especially useful
for potable water tank and pipe inspections.
Other applications being, testing wall thickness
of fuel tanks on sunken vessels, bridge, pile
and oil rig member inspection.
Cathodic
Protection Potential Measurements
SubNet uses a Proximity
CP Probe to enable us to carry out underwater
cathodic protection potential measurements in
a wide range of application without the need
for preperation being done or to make physical
contact.
The
Benefit
The Complete Packag
ready to Mobilize |
Small,
rapid and efficient mobilisation
and deployment, small footprint
(The entire system weighs less than 70 pounds
and packs neatly in two rolling
Pelican cases that can be carried in a car
trunk or helicopter, or checked as airline
baggage and transported by one
person) makes the SubNet Services VideoRay
ROV offshore inspection package and attachments
such as a Thickness Gauge extremely
cost effective, for those quick
one off jobs, or even feasible now as a
low cost permanent stand by service. |
Quick
Hire
SubNet
can hire the system with or without Operators
who may if required also be CSWIP Inspection
Qualified.
Attachments
for Metal Thickness Readings, Sonar and
Mapping Software.
High Resolution Camera
DVD Picture, Position and Depth Recording
- Engineer Talkover |
The
underwater system uses a technique known
as Multiple Echo, which allows metal thickness
measurements to be taken without first
removing coatings. The unit is pressure
tested to 500 meters. Dedicated software
displays the time, date and thickness
readings on the surface, and all readings
can be recorded for reporting on DVD,
CD ROM and incorporated to ROV recorded
position data.
The
Cygnus gauge was used on a VideoRay during
a survey of the USS Arizona battleship,
which sunk at the start of WWII in Pearl
Harbor, Hawaii. During explorations by
the National Park Service Submerged Cultural
Resources Unit, the Cygnus gauge aboard
a VideoRay traveled up to 150 feet inside
the ship to test a wall for structural
support and determine levels of deterioration
to structural members.
ROV with
Thickness Guage |
SubNets VideoRay ROVs are
used for underwater security and surveillance,
search and rescue missions, wreck explorations,
scientific research, and inspections of
dams, culverts, piers, and other submerged
structures. About the size of a shoe box,
the VideoRay is tethered and runs from a
small generator, a car battery, or a standard
wall socket. Its control box includes a
joystick, bearing and depth readings, control
of two 20-watt halogen lights, and tilt
and focus of the high-resolution camera.
The operator, located on a boat or land,
watches a TV monitor to see the location
of the VideoRay. The VideoRay can be equipped
with scanning sonar, positioning systems,
manipulators, GPS, sondes, and other instrumentation
|
Uses
For CP Package
Carry
out underwater cathodic protection
potential measurements in a wide
range of applications including:
- Production
and drilling platforms
- Ships
hulls
- Jetties
- Other
marine works.
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