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White papers
GBE software philosophy: tuned for success
According to new research,
success in 68% of technology projects is improbable right from the start;
poor business analysis, understated requirements, and low level of competency being named among the major causes.
So why is GBE different?
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Desalination megaprojects: to participate or not?
Rapidly expanding water desalination market towards bigger capacities (of above 25,000 m3/day) encourages
small-to-mid-size-unit manufacturers to participate in the megaprojects without prior experience in
their engineering and construction and understanding what megaproject is. Wikipedia definition of
the megaproject as an extremely large-scale investment does not throw the light on what to do
to expand the small company business.
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Project scheduling: out of stall
Desalination BOO and EPC mega-project schedules contain huge amount of interrelated activities. For instance,
typical schedule of the 250,000m3/day project has more than 5000 entries with the annual maintenance budget of US$200,000.
Available on the market general-purpose tools for the project scheduling and tracking like
Microsoft Project Office and PSnext are not applicable at all to the projects in question.
The article contains overview of the next-generation super-fast project manager which merges together
deep customization, a powerful set of analytical tools and intuitive user interface.
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Introduction into PFD and P&ID
GBE is inseparably tied to a number of diagrams: the plant general layout (GL),
process flow diagram (PFD) and process and instrument drawing (P&ID),
sometimes called piping and instrumentation drawing.
This collection of diagrams is collectively called P&ID throughout
the project.
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Control resolved
HSE research, published in their book 'Out of Control', shows that 60%
of all process industry accidents can be traced back to errors in the
design and specification. Too many companies fail to specify what the
control system is supposed to do.
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Plant availability
There is a widespread confusion between the plant availability
and the plant reliability. The latter relates to the procured
equipment failure rate and is the negotiation point of the project package
whereas the first is not as it depends on the repair capabilities of the
plant personnel and the adopted preventive maintenance plan (PMP). It
necessarily includes such time-consuming procedures as CIP cleaning and
the membranes reshuffling and replacement.
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Plant operation modes
Plant production capacity and operation modes are 2 inseparable halves.
The clients and the designers shall be in full agreement about them as
they may define a family car or a racer differing
in price by more than 100%! For example, the seawater intake filtering
system withstanding the jellyfish inrush lasting just several days a year
is 3 times more expensive than the ordinary traveling band screens.
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Pump selection: trifles make perfection
Times are gone when the pump selection was boiled down to the definition
of the head, flow rate and material of construction. Nowadays high-capacity
high-head pumps for desalination applications are a sophisticated piece
of equipment always custom-tailored to the client requests. These pumps
are a critical path component of the project schedule and the major contributor
to the overall energy consumption of the plant.
Below is an overview of key points that may help you in deciding which pump is right
for you, and may enhance the performance and reliability of your pump
at no cost.
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Project specification
The ambiguous project specification is the perfect reason for the losing
bidder to apply to court and have the deal halted and the bid evaluation
results re-considered. Surprisingly high percentage of court applications
(nearing 50% of all tenders, the author estimate) warrants closer insight
into the project specification objectives and structure. [->to be continued soon ]
From archive
Cavitation-free non-overload start/stop procedures
The paper shows an elegant solution of the second-in-importance problem of
any reverse osmosis desalination plant - start/stop sequences for high
pressure pump coupled to the Pelton turbine. This procedure is implemented
in the Palmahim SWRO plant (Israel, 2007). At present 5 out of 6 SWRO trains
are stopped daily for 4 hours(!) to maximize revenues from low night
tariffs.
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Hydraulic design of side-ported RO vessel arrangements
Engineering recommendations on how to optimally perform hydraulic design
of the reverse osmosis vessel arrangements in the desalination plants.(joint
research with BEL, 2003).
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Sea water multi-effect distillation energized by combustion turbine
Presented are feasibility study results of the Combined Power
and Desalination Plant incorporating the Low-temperature multi-effect
distiller. (Desalination, Volume 127, Issue 3, 20 February 2000, Pages
261-269)
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