modular substations

Products Vol. 01
modular substations
contents
The Modular Substations
The systems within
Design, Engineering and 3D
Load Out and Transportation
technical data
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01. EDG Emergency Diesel Generators
Kashagan Project | Kazakhstan
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Skema’s Modular Substations can be
used for a wide variety of applications
including LV/MV/HV packaged substations, local equipment rooms, control rooms, generator power plant
rooms, personnel refuges and as
general process or utility buildings.
They are fully assembled and rigorously tested within Skema facilities
before being shipped to site, by land,
sea or air, ready for rapid installation and commissioning.
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02. Local equipment room – Fabrication yard | Ravenna Italy
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03. Modular substations
Karachaganak Project | Kazakhstan
04. Process utility buildings
Fabrication yard | Atyrau Kazakhstan
05. Modular substation
Hannibal Sour Gas Project | Tunisia
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06. Local equipment rooms
Fabrication yard | Ravenna Italy
The Modular Substations
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One of the most important
and distinctive features of
Skema’s Modular Substations
is the opportunity they afford
to create a unique and fully
CUSTOMIZABLE solution, in accordance with each client’s
individual specifications, the
environmental requirements,
the environmental conditions
and the project-specific transport sport size limitations.
Skema’s Modular Substations can
be designed with fire ratings as
per the client’s requirements, and
with the capacity to withstand both
seismic and blast events. They are
suitable for ambient temperatures of
between -40°C and +50°C, resistant to harsh environmental condi-
tions and supplied with special paint
coating cycles that are appropriate for each specific application.
Skema’s Modular Substations are
space-efficient, highly reliable and
fully integrated, and equipped with
the latest state-of-the-art technology for Oil & Gas applications. They
are designed to work safely in harsh,
potentially explosive and chemically
contaminated environments, and are
intended for both onshore and offshore Oil & Gas / petrochemical plants.
A modular approach is key to creating large-scale structures, taking due
account of the transit constraints or
any potentially problematic conditions
(weight limits, road or railway transport,
presence of nearby structures, etc.).
Turnkey Solutions
During the project, Skema acts as an
EPC contractor, managing, co-ordinating and monitoring every aspect of the
project: detailed design, project management, scheduling, procurement
and expediting, QA/HSE management, documentation, fabrication, all
multidisciplinary installation activities
(architectural, mechanical, E&I, HVAC,
etc.), and testing and pre-commissioning at Skema’s fabrication yards.
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In addition, Skema can transport
the equipment onto seagoing vessels, and can also provide transportation to site and full installation
and commissioning, as well as operational support and maintenance
for the life cycle of the installation.
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07. HVAC and monitoring room
Kashagan Project | Kazakhstan
08. Modular substations
Kashagan Project | Kazakhstan
09. Modular substation
Hannibal Sour Gas Project | Tunisia
10. Switchroom
Kashagan Project | Kazakhstan
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11. Modular substation
Kashagan Project | Kazakhstan
12. Modular substation
Karachaganak Project | Kazakhstan
13. Fabrication yard
Atyrau Kazakhstan
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14. Fabrication yard
Atyrau Kazakhstan
The systems within
Skema’s modular substations afford the opportunity
to create a complete and fully CUSTOMIZABLE substation
allowing for any internal
configuration of the switchgear to be installed. Suitability for the specific conditions
of service is also assured.
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In order to support the primary internal equipment (LV/MV/HV switchgear
or DCS) the following typical systems
are supplied:
>> Insulation for energy conservation,
using non-combustible materials
with type-tested fire resistance
(fire-resistant up to 120 minutes)
>> Special painting cycles and internal anti-skid floors
>> Heating Ventilation and Air Conditioning (HVAC) system engineered
to guarantee the ambient operating conditions
>> Pressurization system including airfiltering systems for contaminants
and toxic or corrosive substances
>> Gas, smoke, heat and fire detection system, conventional or addressable, with monitoring panels
that can interface with DCS and
field control systems
>> Transformer bay or equipped
rooms
>> Coating systems and corrosion protection for rust prevention even in
extremely corrosive hot/humid environments subject to the presence
of dust, salt and corrosive gasses
>> Lighting and small power distribution system
>> Equipment rated for hazardous
areas as per the AtEx 94/9/EC
directive
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>> Automatic fire-fighting systems:
total flooding, clean agent, environmentally friendly
>> Emergency Diesel Generators
>> Security, IT and Telecoms including PA/GA system to allow
personnel to monitor and control
normal activities
>> Battery and Uninterruptible Power
Supply (UPS system)
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15. Switchroom
Hannibal Sour Gas Project | Tunisia
16. PSA 1 “Complex D” HVAC and monitoring room
Kashagan Project | Kazakhstan
17. LSA “Complex D” HVAC and monitoring room
Kashagan Project | Kazakhstan
18. LSA IBEEV utility shelter
“Complex D” control room and HVAC room
Kashagan Project | Kazakhstan
19. LSA IBEEV utility shelter
“Complex D” control room and HVAC room
Kashagan Project | Kazakhstan
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Design, engineering
and 3D
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Skema utilizes a comprehensive
computer-based design system dedicated to carrying out
engineering calculations relating to structures, lifting and
loadout.
The system makes it possible to conduct three-dimensional analysis of
building structures, space optimization, clash avoidance and safety tolerances; to study static and dynamic
loads for lifting, transportation, blast
and seismic loads; to create innovative designs and building components.
A complete 3D model of the building
can be created by Skema’s specialists during the engineering phase.
The model features all of the systems
and auxiliaries, and is used for the
following purposes:
>> To avoid clashes between everything that is to be installed within the building
>> To optimize space and cable routing
>> To determine the installation
sequence for each system
>> To verify the required space for
the installation and the removal of
major pieces of equipment
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>> To verify expansion potential
(free space for installation of future equipment, or equipment installed by others)
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20. Process utility building
21. LV and MV modular substation
22. Clashes investigation
23. Skidded drilling center
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Load Out
and Transportation
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The know-how it has acquired
over many years of accumulated experience, assembling
structures of different dimensions and weights, has allowed
Skema to develop skills and expertise in relation to various
types of lifting, handling and
transportation operations.
tion and certificates, custom duties or
special requirements for each type of
transport such as:
Skema’s Engineering team is accustomed to dealing with the problems
of international shipping, documenta-
Skema can deal with SPMT handling, lifting and transport operations under exceptional conditions,
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Road transportation
Barge or ship
Airfreight
Rail transport.
as well as barge dressing and setting.
Skema can also provide the following additional engineering services
for load out and transport: grillage
and sea-fastening calculations,
ballasting calculations, mooring
details, sea transport analysis and
load out manuals, offshore lifting
calculations, handling temporary
equipment, dimensioning and lifting, checking of lugs/spreader bars,
general arrangements and details of
temporary structures for transport.
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24. Lifting operations of local equipment rooms
Fabrication yard | Ravenna Italy
25. Air cargo transport of packaged substation
Kashagan Project | Kazakhstan
26. Barge transport of local equipment rooms
Kashagan Project | Kazakhstan
27. Handling operations of local equipment rooms
Fabrication yard | Ravenna Italy
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technical data
ENVIRONMENTAL CONDITIONs
Operating temperatures
- 40°C ÷ + 50°C
Relative humidity
Up to 95%
Climate range
Hot desert climate ÷ Cold arctic climate
Wind velocity
Up to 40 m/s (140 km/h, cyclonic wind)
Snow loads
Up to 1 meter of snow
Seismic loads (PGA)
Specific to site, up to 0.18 g
Hazardous areas (AtEx)
Customizable also for installation in Zone 1
BUILDING CONSTRUCTION
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Air tightness
weatherproofing
<< 0.25 m3/h/m2 @ 50 Pa
On request, continuously welded construction
Ambient Overpressure
Adjustable up to 150 Pa
Insulation U-value
< 0.5 W/m2/K
Ingress Degree of protection for
enclosures
Up to IP65
Fire Resistance (offshore)
A, H, B constructions with up to 120 minutes’ fire resistance as per
IMO SOLAS - Type-tested in compliance with FTP code
Structural Fireproofing
(offshore)
Jetfire J15
Blast-resistance building design
Low damage up to 2.5 bar peak overpressure
(capability for lab testing of blast barriers)
Rust and corrosion protection
Zinc-rich painting cycle with 275 μm dry coat
Hot dip galvanizing - Tropicalization
Winterization
Heat tracing - Space heaters
Noise and vibration
- 35 dB acoustic insertion loss
Anti-vibration mountings on rotating or vibrating parts for mitigation
at source.
IAQ (Indoor Air Quality)
Dust and particle filtration customized up to HEPA filtering class
Up to G1 air-purity class as per ISA s71.04
SIL class (Safety Integrity Level)
Available SIL2 for safety equipment
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