Page 46 - Industrial plants

stages of operation which at the latter a multiple relays and contactors certified for use in Zone 1 had to
Residual Oxidants (TRO) sensors samples the residual be installed in the circuit. In case of problems on the
chlorine and successful neutralization of free chlorine. FPSO, the remote I/O system is now able to override
Their system, based on electro-chlorination technology, the purge and pressurization system control unit via an
combined with Pepperl+Fuchs certified customized air output and continue to operate safely, since air
purge cabinets allows efficient installation and operation continues to flow through the needle valve and pressure
on all types of vessels such as LNG Tankers , Crude Oil is maintained. This function also makes it easier to carry
& Product Tankers, Bulk Carriers, Container Ships, out maintenance work on the control unit, since the
Vehicle Carriers and LPG Tankers trading globally as entire process does not need to be shut down.
well as onboard smaller coastal vessels and
superyachts. This flexibility allows unrestricted trading “In its Solution Engineering
under any given conditions regardless of the water’s Centers in the USA, Europe, and Asia,
salinity, temperature and turbidity levels. Pepperl+Fuchs develops customized
system solutions for special
But the benefits for a FPSO don’t finish here! applications in potentially explosive
areas
A well-known American control system manufacturer
wanted to equip an FPSO vessel belonging to one of The additional contactors and relays ensure that the
their end customers with a complete electrical solution. system is able to switch automatically between two
To achieve this, the control system manufacturer power sources, in the event that one of the two power
required different ATEX- and IECEx-certified enclosures supplies fails. With this sophisticated purge and
for Zone 1 and temperature class T4 so that the pressurization solution from Pepperl+Fuchs, the control
solution could be equipped with remote I/O systems. system manufacturer’s customer is now able to
The enclosure dimensions ranged from 1000 × 1500 × manage and monitor processes on its FPSO in the
450 mm to 800 × 2100 × 1000 mm (W/H/D). All Indian Ocean safely and efficiently.
enclosures should comply with the Ex pyb type of The end customer was provided with durable enclosure
protection. In addition, the control system manufacturer solutions, suitable for use in ATEX and IECEx zones,
required an external override function to enable the designed to withstand the harsh offshore conditions on
remote I/O systems to continue operating safely even board the FPSO vessel. The previously costly and time-
when the purge and pressurization control unit is shut consuming process of coordinating various suppliers of
down. individual components and applying for system
To meet these requirements, the Pepperl+Fuchs certification was replaced by one-stop shopping at
engineers opted to use the 6500 Series purge and Pepperl+Fuchs: All services, such as design,
pressurization system. This system consists of a control construction, production, and end certification, were
unit, an enclosure protection vent, and a manifold valve, handled under one roof by the electrical explosion
forming the basis for the required explosion-protected protection experts
enclosure solution. The enclosures themselves are In its Solution Engineering Centers in the USA, Europe,
made entirely of SS316L stainless steel, making them and Asia, Pepperl+Fuchs develops customized system
suitable for the harsh offshore conditions aboard the solutions for special applications in potentially explosive
FPSO vessel. Special vibration dampers, installed areas—solutions that are ready to use and come
between the base and the enclosure, protect the with certification.
enclosures and electrical components from any This offers many advantages, particularly for
potential mechanical damage caused by engine international projects. Every phase of the project, such
vibrations and sea conditions. To ensure that the as engineering, procurement, or design, can be
solution included the required external override for the managed around the world at the networked Solution
purge and pressurization system, a combination of Engineering Centers.

Parastoo Parsi

Parastoo is an electronics engineer graduated from sales roles at UAE, Australia. Now she lives in Italy and
Shiraz University, Iran. works as a Sales Manager responsible for Channel
She has been working with Pepperl+Fuchs for 18 years, Sales in a number of countries in East Europe.
has considerable experience in various technical and

IndustrIal Plants - May 2023
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