D Nesbitt Associates
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D. NESBITT ASSOCIATES are licensed Professional Engineerings specializing in state-of-the-art chemical and mechanical cleaning design, implementation and supervision, including Chemical Cleaning, Steam Blowing, Air Blowing, Lube Oil Flushing and Pipeline pigging. We provide an unbiased, reliable source of technical advice, extensive knowledge and Professional Engineering support to industrial plants and new construction projects worldwide.

Our Mission is to provide. The engineering consultants of D. NESBITT ASSOCIATES use their knowledge and experience to create value for you! We are licensed Professional Engineers, specializing in industrial cleaning engineering. We welcome the challenge of analyzing new and difficult corrosion problems, developing workable solutions, and proving their economic advantages!

An unbiased, reliable source of specialized advice. Your interests are first! We don't promote the special interests of one particular vendor. Proprietary treatments and higher profit options need not be substituted for the advantages and safety of proven techniques!
Services
The first key to any successful cleaning is understanding the root cause for the problem.
The wrong reason can lead to disaster, or less than desired results.
NESBITT can analyze your deposit or tube sample, to determine the root cause of fouling or corrosion, using deposit composition and stratification analysis, deposit weight density analysis, and solubility studies, as well as metalurgical analysis to understand the underlying effects of the deposit.
We'll model flow and heat transfer effects of these deposits where applicable.
Air Blowing is now considered the best practice for cleaning Fuel Gas systems by Industry, with EPRI's recently developed guidlines on the use of air or nitrogen in compressed pneumatic blows.
There is stil considerable danger in this type of pneumatic blowing, however the potential for thermal explosion has been eliminated in this technique.
NESBITT has developed innovative and proprietary techniques to accomplish these air blows with a minimum of external equipment, through the use of our YoYoBlowing technique, where the line itself works as the compressed air reservoir.
Thess unique mass flow meters and transmitters measure compressible gas flow at the very high velocities found in steam/air blowing.
This BlowMeter can withstand the high structural stresses found in these blowing techniques, while creating a very low permanent dP in the line.
A 4-20 mA current loop directly ranged to gas flow is provided.
Using the optional TriLoop, packaged in a NEMA 4 water-tight enclosure, this BlowMeter will provide three (3) additional 4-20 mA current loop signals proportional to the gas temperature, pressure and differential pressure created.
With today's climate of mergers and acquisitions in the industrial cleaning business, the historical significance of the people who came before us is being lost everyday.
The initial knowledge base that they built for this business is our heritage.
It will review the history of the industrial cleaning business, back to 1931 or thereabouts when it was really born.
Included are as many of the people as possible who got the business started and made it succeed.
It will include many of the ideas, events and processes and their chronology from start to the present.
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