Cleaning and liquid contact with solids – Processes – Hollow work – internal surface treatment
Patent
1998-10-07
2000-06-20
Gulakowski, Randy
Cleaning and liquid contact with solids
Processes
Hollow work, internal surface treatment
134 2212, 134 2214, B08B 902
Patent
active
060765364
ABSTRACT:
A method to chemically clean and immediately passivate a water distribution system to quickly form a passivation layer. The system may be a potable water system, a non-potable water system, a water well or a fire protection system such as a fire sprinkler system and may be treated with a biocide. A section of the system is isolated and chemically cleaned, then is immediately passivated using a high concentration of passivating agent. A passivating layer quickly forms, then the concentrated passivating agent is removed and a maintenance concentration of passivating agent is added. The cleaned and passivated section is restored to the system to provide improved water flow.
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Ludwig Jerome H.
Shenkiryk Myron B.
Chaudhry Saeed
Gulakowski Randy
H.E.R.C. Products Incorporated
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