Water Technologies Save Time and Money Case Study

August 21, 2017

Water Technologies Save Time and Money Case Study

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MPW’s water technologies save Alaskan power plant commissioning time and money

Problem
A world renowned engineering and construction company, commissioned by an Alaskan power supplier in the final phase of construction on its 183 MW natural gas-fired combined cycle thermal plant, faced the challenge of supplying a constant flow of ultra-pure water to support steam blows during the commissioning. Due to the plant’s isolated location and the need to exchange equipment in order to provide a constant flow of ultra-pure water, transportation became the company’s largest and most costly issue. The previously recommended solution called for every piece of equipment to be shipped from Tacoma, Washington, creating both timing issues and high costs.

Solution
MPW suggested and designed a new on-site system capable of producing twice the total amount of ultra-pure water compared to other available systems. This system was comprised of four 10 million grain demineralization mobile units. Three of the units were installed on a common header system and used to polish the condensate return. The last unit was used to purify city water into ultra-pure boiler makeup water.

Results
Due to the vast capacity of the mobile demineralization units, MPW provided a constant flow of ultra-pure water without exchanging equipment during the four week project. The elimination of exchanges solved the potential transportation issues, saved thousands of dollars and allowed the power supplier to commission its plant on time.

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