March 2013 Tube Products International
35
products & developments
Enhanced safety system
Yokogawa Electric Corporation has
released an enhanced version of its
ProSafe-RS safety instrumented system.
The new version, ProSafe-RS R3.02.00,
features input/output modules that will
operate reliably in the high-temperature
conditions typically encountered in
desert locations. Support of an open
communications protocol has also
been added, enhancing the system’s
compatibility with other vendors’
distributed control systems (DCS).
In the oil, natural gas, petrochemical,
iron and steel, and other energy and
basic materials industries, it is becoming
increasingly important to ensure the
safety of plant operations to prevent
accidents, protect the environment, and
be good corporate citizens.
Accordingly, there is a growing demand
for safety instrumented systems that
can detect abnormal conditions and
safely initiate emergency shutdowns.
Control
devices
and
safety
instrumentation systems are often
installed outdoors for monitoring
oil and gas wells and pipelines. As
many of these facilities are in desert
locations, they must be able to operate
in high-temperature conditions. In
addition, plant operators who replace
their safety instrumentation systems to
improve productivity and safety need to
maintain compatibility with their existing
distributed control systems.
To satisfy these needs for high-
temperature resistance and inter-system
compatibility, Yokogawa has developed
the enhanced version of the ProSafe-RS
safety instrumented system.
High-temperature resistant digital and
analogue input/output modules have
been developed. Previously, input/
output modules had to be spaced far
apart to prevent the accumulation of
heat. While mounted closely together,
the new modules can operate at ambient
temperatures of up to 70°C (158°F),
reducing the system footprint.
Safety instrumented systems and
distributed control systems are not
always replaced at the same time.
Therefore, ProSafe-RS has been
enhanced by adding support for
Ethernet-based
Modbus/TCP
communications with other systems.
Modbus is an industrial communications
protocol developed by US company
Modicon (now owned by Schneider
Electric). This facilitates the flexible
connection of the ProSafe-RS system
with distributed control systems from
other vendors, allowing operators a
greater range of choice.
Major target markets and applications
include emergency plant shutdown, fire
prevention and firefighting in the oil,
natural gas, petrochemical, and other
process industries. Unlike conventional
safety instrumented systems and
distributed control systems, which
are regarded as having different roles
and functions and operate separately,
the operation of ProSafe-RS and the
Centum series can be fully integrated.
An independent certification body has
certified that ProSafe-RS conforms
to the IEC61508 international safety
standard and can be used in SIL3
applications.
ProSafe-RS has been installed in more
than 1,000 projects worldwide since its
release.
Yokogawa Europe BV
– Netherlands
Yokogawa has updated its ProSafe-RS safety instrumented system
Turkish stainless import
specialist
Tradinox Stainless Ltd is an importer
with 11 years of sales experience in
the stainless raw material sales field.
The company imports on a regular
basis first and second choice sheets
and coil flat materials for 304, 430
and 316 grades.
As the company assumes sales
without stock, it can proceed with
these coils and sheets by competitive
cash or credited selling conditions.
In addition to its own import facilities,
with the help of foreign contacts and
agencies Tradinox obtains stock lists
and tenders and carries out import
consultancy on every grade (304,
316, 430, 201, 202, 409 and 441) and
every branch (coil, sheets, bar, tube
and fittings) of stainless.
Tradinox Stainless Ltd
– Turkey
