Page 23 - Impiantistica Industriale

site and local regulations.
Three module yards were
selected in South East
Asia:
• Malaysia for the Pre-
Assembled Pipe
Racks (PAR) and
Pre-Assembled Units
(PAU) Substation module on SPMT
• Indonesia for the
Electrical Substation battery limits) scope were fabricated and tested
• Thailand for the Heat Recovery Steam Gene- in Malaysia. These much larger and heavier mul-
rators (HRSG) tiple-story modules are legs-down units, meaning
that the support legs are included as part of each
With the selection of these three module yards in module. These modules were placed onto their
South East Asia, Amec Foster Wheeler’s Thailand, flushed foundations using Self Propelled Modular
Indonesia and Malaysia operations were involved Transporter (SPMT) and without the need of lifting
to support and provide local supervision and in- cranes, limited just to a few units due to accessibil-
spection services. ity constraints.
Approximately 2,000,000 hours were worked at
these yards without recordable injuries. Yard works
have been challenging and included works up to Indonesia – substation yard
30 metres in elevation, commissioning of high volt- The modularised high voltage substation was built
age energised equipment, handling of chemicals in Indonesia. This 584 ton, 40 metre long and 12
for boiler cleaning and mechanical works in con- metre high substation includes high voltage Gas In-
fined space. sulated Switchgears (GIS), as well as medium and
low voltage switchgears. All E&I equipment was
Malaysia – PAR/PAU yard tested and commissioned at the module yard and
afterwards moved to site on a barge with SPMTs
Total five OSBL (outside battery limits) PARs were and placed onto its concrete cable cellar tempo-
fabricated and tested in Malaysia and arrived in rarily filled with sand.
Singapore on an 86-metre barge. These are legs-
up PARs, meaning that the support legs are part
of the field scope. These PARs are therefore quite
compact with a pancake outline and were lifted on Thailand – HRSG yard
their legs at site. Two Heat Recovery Steam Generators (HRSG)
were built at a module yard in Thailand, complete
A total of 11 PARs and PAUs for the ISBL (inside with all internals, steelworks, piping, insulation and

HRSG Module and Stack lo-
aded on the barge

Impiantistica Italiana - Settembre-Ottobre 2017 21