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(Borealis) -- Durability and
efficiency were the determining factors behind the choice of PE100 BorSafe
HE3490-LS from Borealis, a leading provider of chemical and innovative plastics
solutions, for renovation of a crucial cooling water circulation system at the
world’s two biggest oil shale-fired thermal power plants.
Estonian Energy, referred to locally as “Eesti Energia,” owns and operates
the large production facilities at Narva, close to Estonia’s northeast border
with Russia. The Narva thermal power plants have a power generating capacity in
excess of 2,300MW. Estonia Energy is the leading electrical energy producer in
Estonia, one of the largest providers in the Baltic region and an exporter of
electricity to the Nordic power market.
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Upon discovering extensive pipe corrosion in the system as part of an
ongoing improvement programme at Narva, Estonia Energy turned to independent
Estonia-based specialist plastic pipe producer Krah Pipes OU to upgrade the
approximately 40-year-old steel cooling water pipes. The old pipes did not have
a Borealis coating and were not made of Borealis material.
Key requirements for the new network, involving two parallel pipelines
running from a pumping station to the plants’ turbine room, were safety and the
reduced maintenance of leak-free pipes with a minimum 30-year service life.
Speed and flexibility of installation were particularly important to avoid
significant power generating downtime and major cost
penalties.
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Borealis’ bimodal HDPE BorSafe HE3490-LS was identified as the pipe
material offering the optimum balance of properties to meet the project’s
criteria. The high performance PE100 material, classified MRS 10 and on the
positive list of the PE100+ Association, exceeds the reference standard for the
production of these pipes. It has become the reference material for many
industrial pipe and pipe relining projects globally.
mrcplast.com
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