UKAS UT Onsite Award
As you are aware, back in August 2016, TVC gained UKAS accreditation status for the electrical
verification of Ultrasonic Flaw Detectors.
Well. We took it a step further.
As of 10th April 2017, TVC will offer UKAS calibrations for the electrical verification of
Ultrasonic Flaw Detectors in our laboratory but also onsite at our client’s premises! So, if you
have a contract that means you cannot possibly allow your equipment to be sent out for
calibration, we will come to you – no matter where you’re situated.
For full details of Schedule of Accreditation,
The gaining of Ultrasonic Flaw Detection UKAS verification, both on- and offsite, is just the
start for TVC. We will continue to strive towards excellence and further our certification
offerings to our customers.
TVC have been manufacturing the ColcheK system, under exclusive licence for several
years but felt it needed further development for a new generation.
After several months of development work, TVC are proud to launch the all new ColcheK2
unit. The new system has a digital display, depth measurement and threshold facility (which
were not available on the previous system) and has had a complete overhaul of the internal
electronics. The ColcheK2 now has a one button facility which eliminates errors in the initial
set up, allowing far greater accuracy than was previously available. Based on the eddy
current technique, the new unit is lighter, faster to set up and use and gives instant pass / fail
indications with the easy to read and colour changing display.
French physicist, Jean Bernard Léon Foucault (best known for the invention of the Foucault
pendulum), discovered Eddy Currents in 1865 when carrying out experiments using magnets
and nonmagnetic materials. Foucault observed a resistance to the rotation of a copper disc
when it was influenced by a magnet. He also noted the disc became heated! This was the
first documented evidence of Foucault Currents or Eddy Currents as we now know them. To
find out more about Jean Bernard Leon Foucault, click here.
The ColcheK2 system is a compact and rugged unit which utilises a remote field, through
transmission Eddy Current technique. Through transmission probes are similar to differential
probes – in basic terms, it’s two coils into two packages – and is therefore, unaffected by
temperature and lift off. Through transmission probes detect corrosion and wall thinning
remote from the drive coil allowing the below ground inspection of planted steel lighting
columns, without excavation around the column base.
Featuring a unique ultrasonic range finding system used to accurately feedback the search
head depth inside the column, the ColcheK2 allows the operator to locate and identify the
depth of an actual defect and its significance when related to depth. A defect located deep
down is less significant than those located near to ground level. The cable entry on a column
can also easily be identified by its depth and size and eliminated from the inspection.
Planted steel lighting columns either between ground level and cable entry or up to one
metre in depth can be inspected by the ColcheK2. Applications include pipework and risers
through bulkheads and deck plates on board ships and offshore installations; lighting
columns and lamp posts embedded into the ground, and, any other applications where
access is limited.
Deployed from the outside of the columns and a small search head, used internally, the
system detects loss of wall thickness. Using the normal access door, the ColcheK2 probe
can scan the critical area and give an instant reading of the percentage loss of wall thickness
on the instrument meter. When used for this type of routine inspection of lighting columns,
there is no need to excavate the site as the ColcheK2 can detect a 5% loss of wall section
as far down as 750mm below the ground level.
Although testing has confirmed the ColcheK2 can detect faults within aluminium, its
usefulness is limited and further testing will not be carried out presently. Increase in
frequency due to the properties of aluminium means Eddy Currents can travel only around
150mm below ground and therefore, critical areas may not be fully covered.
Street lamps fail for a number of reasons, for example, bad installation, impacts or corrosion.
Lighting columns are most susceptible to corrosion at and slightly below ground level; water,
road salt and other chlorides and oxygen from the air combine to make this a highly
The ColcheK2 is currently used by inspection companies and local councils to inspect
lighting columns prior to the installation of lights and decorations to check the column is
suitable to bear the additional strain. ColcheK2 has been used on seaside resort lighting
columns where summer decoration and additional lighting is common. It is also used in
special event areas including those around the Isle of Man TT course prior to racing.
Quotations and Calibration Bookings
We have recently updated the TVC website. For the ease of our customers, it is possible to
make quotation inquiries directly via our online system.
TVC are also offering faster calibration services. There is a Premium, Fast Track and
Standard services available and again, you can now book this via our website. Just create
an account, tell us what service you would like and what equipment you’re sending and we’ll
allocate you a slot. Please note, terms and conditions apply.
In addition, you can be confident that your details are safe as we have now transferred the
site to an ‘https’ status.
If you have a query for an item that isn’t covered on our website or you have a bespoke item
you would like to discuss further, don’t forget you can still email our sales team at
We are pleased to announce we will continue our sponsorship of both PRB Racing and
PRB Racing, run by the enigmatic Rob Barber and his father, Phil, have expanded their team
to include Owen Grieve, Eric Wilson, Rob Livesey and Jessica Mason. Rob Barber will be
taking on his first race at Three Sisters this weekend. He will also be continuing his
partnership with Ohio State University, racing their electric bike ‘Buckeye Current’ the
famous Pikes Peak International Hill Climb later in the year. The team will be taking on
Oliver’s Mount, the Isle of Man TT, the Ulster Grand Prix, and other meetings which are to be
confirmed. We will let you know how they get on.
Used with permission © Aidy J Craig
Charlie Soanes was nominated for Young Shooter of the Year at the Clay Pigeon Association
Awards 2017 which was held on 4 February this year and sporting inspiration, Sharon
Davies MBE, guest hosted the evening. Charlie came away with the runner up trophy and
his successes over the past year have made TVC incredibly proud of sponsoring such a
remarkable local youngster. Charlie has since been up and down the UK at various events
and powering through with some impressive results. At the beginning of April, he came 1st in
Colts class at the Essex Masters. His ambition to take a place on the GB Shooting Team could
well be in his grasp as he goes from strength to strength each week.
The Validation Centre (TVC) Ltd