TPi April 2010

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newsbusiness & market
18 Tube Products International April 2010
Hydratight has used its machining
expertise to aid managers at the OMV
refinery at Burghausen in the Bavarian
‘Chemical Triangle’.
When optimising processes, OMV
engineers wanted to improve tension on
the base of two huge coker units. This
required the precise change of geometry
on different borings and slots, and this
had to be performed 196 times.
“Geometry change of borings or
slots isn’t normally a big task, even
though the admissible tolerance here
was very tight,” explained Hydratight’s
project engineer, Goetz Wagnitz. “The
challenging part of the job was to
achieve the same accuracy for all the
slots, so the coker units wouldn’t suffer
out-of-specification stresses.”
The entire project had to be completed
during a scheduled 30-day shutdown
– a rate of almost 11 completed slots
per day, with two teams of Hydratight
specialists working in shifts around the
clock. To achieve the required accuracy
the team developed a special milling
frame, which allowed not only precise
worm-gear driven control of the cutting
head, but also fast set-up and transfer
from slot to slot.
After testing several approaches at
their workshop in Dietzenbach, on the
outskirts of Frankfurt, the team came
up with a super-stiff steel rig that could
clamp to each coker unit with 18 super-
powerful electro-magnets. “We needed
something that offered not only fast
Hydratight excels at boring project
set up, but also had to be vibration
free, so we could achieve those very
tight specified tolerances,” explained
Mr Wagnitz. “This rig could be fixed with
completely free movement, thanks to
the magnetic clamping system, so the
single slot could be fixed horizontally or
vertically to cut either hole or slot. Once
the power was applied it virtually became
part of the coker unit. And we designed
it so the frame was only 70mm from the
work surface. That meant vibration was
kept to an absolute minimum.”
OMVmanagers were said to be delighted
with the result. “It was excellent research
and development that produced the
right tool specifically for this specific
project,” said Mr Wagnitz. “The work
was completed in good time with the
accuracy demanded and in the time
allowed, and the coker units now
operate just as the client wanted.”
In other Hydratight news, the company
has appointed two new product
managers to oversee its machining and
bolting services divisions.
Mike Mroz, who joins Hydratight as
machine product manager, has a strong
track record of product development and
market management. He is responsible
for the strategic positioning of DL Ricci-
brand machining products and product
development.
Mark Ganey also has extensive
experience in product management and
development, having worked in a broad
range of industries including general
industrial, government, aerospace,
petrochemical, oil & gas, healthcare,
and laboratory science. As global
product category manager for bolting,
his responsibility is to manage and
develop Hydratight bolting products
and services.
Hydratight – UK
Global product category manager Mark Ganey New machine product manager Mike Mroz
Radius Systems has been supplying
Severn Trent Water with PE pipes for
more than 10 years, and has recently
been awarded a new contract from the
company, for the supply of PE pipes
plus electrofusion fittings.
The contract is for an initial three-year
period, followed by options to renew
for two further two-year periods. Radius
Systems will supply potable PE blue
and non-potable black pipes from 25 to
630mm in diameter, along with Puriton,
Radius Systems’ specialist barrier
pipe for use in contaminated land, in
diameters from 25 to 180mm. Innovative
Radius products and systems, such as
the QuickTee single-weld electrofusion
fitting, were key elements featuring in
the contract award.
Radius sales and marketing director Iain
Knowles credited the contract win to
high levels of delivery and performance:
“We have proven our ability to deliver on
an ongoing basis over a number of years,
but more importantly our relationship
with Severn Trent has provided them
with a combination of short-term
advantages and longer-term benefits.
We are looking forward
to providing more
such benefits over the
coming years.”
Radius Systems – UK
Severn Trent Water awards Radius long-term contract
Radius Systems
electrofusion fittings will
be supplied in addition
to potable and
non-potable pipes