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Dow HDPE water pipe for nuclear power plant
As this was to be the first ever use of HDPE in a safety-related water pipe system at a nuclear plant in North America, the team at Callaway had to create a material specification and related procedures from scratch. In the process, they underwent a change in mindset from focusing on what was available to specifying what was really needed. Most importantly, Callaway engineers began to work closely with members of the HDPE pipe value chain. These players included The Dow Chemical Co. (Dow) as the HDPE supplier, WL Plastics Corp. as the pipe manufacturer, and Independent Pipe Products Inc. for the manufacture of special pipe fittings. The consultant, Frank Schaaf, Jr. of Sterling Refrigeration Corp., was also instrumental in the work necessary to gain approvals from the NRC. Callaway team selected CONTINUUM DGDA-2492 Bimodal Polyethylene Resin from Dow as the raw material for its new ESW secondary water pipe system. According to the team at Callaway, this installation is a first important step toward HDPE becoming a preferred material for safety-related water pipe systems at nuclear power stations. AmerenUE is already planning to replace other buried piping with HDPE in other systems in 2009.
Revision Date: 8/31/2011
Tags: 221113 - Nuclear Electric Power Generation * , Sterling Refrigeration, Dow Chemical, WL Plastics, Callaway, Piping, HDPE Resin, Leakage, Water Treatment, Power
DeMin stage of water treatment for boiler feedwater. Ion-Exchange Systems were discussed including Co-Flow Regeneration, Reverse-Flow Regeneration, and Packed Bed Systems.
Revision Date: 1/27/2011
Tags: 221112 - Fossil Fuel 化石燃料, Dow Water Solutions, Ion Exchange, Demineralizer
Boiler Feed and Cooling Water Treatment Webinar - Hot Topic Hour January 27, 2011
Discussion of latest technologies to treat feed and cooling water from natural and process sources and also the economics of various treatment technologies focusing on energy use, chemical requirements, capital costs, reuse of process water and operation and maintenance costs and issues. Password: hth106
Revision Date: 1/27/2011
Tags: 221112 - Fossil Fuel 化石燃料, 221113 - Nuclear Electric Power Generation * , Dow Water Solutions, Nalco, Veolia Water, Water Treatment System, Water Monitor, Demineralizer, Ion Exchange, Steam Cycle, Water Treatment
This presentation addressed the three primary stages of effective water treatment including Pre-Treatment, Roughing, and Polishing. The importance of safe, reliable, efficient, and “green” environmentally sound practices was emphasized. Ultrafiltration using Dow tubular UF membranes was highlighted as an effective pre-treatment going into RO filtration. EDI was discussed as an effective polishing procedure that eliminates the need for chemical treatments.
Revision Date: 10/27/2010
Tags: 221113 - Nuclear Electric Power Generation * , Dow Water & Process Solutions, Tubular UF Membrane, EDI
Nuclear Power Plant Water Treatment Webinar - Hot Topic Hour July 1, 2010
Three industry experts provided presentations for the McIlvaine Hot Topic discussion on Nuclear Power Plant Water Treatment. • The first presentation was by Gregg Poppe of Dow Water & Process Solutions: ‘Reducing Chemicals and Waste with Advanced Water Purification Technology.’ This presentation addressed the three primary stages of effective water treatment including Pre-Treatment, Roughing, and Polishing. The importance of safe, reliable, efficient, and “green” environmentally sound practices was emphasized. Ultrafiltration using Dow tubular UF membranes was highlighted as an effective pre-treatment going into RO filtration. EDI was discussed as an effective polishing procedure that eliminates the need for chemical treatments. • The second presentation was by Timothy Rittof of Veolia Water Solutions and Technologies: ‘Nuclear Power Plant Water Treatment.’ This presentation discussed various clarification processes for non-process water including river water, reclaim (grey) water, and cooling tower blowdown water. The Actiflow and Actisoft clarifiers and softeners were discussed, along with disc filters and CeraMem filters by Veolia. Also discussed were energy recovery multi-effect-evaporators for the production of fresh water using waste heat from power plants. Veolia provides more than 40 years of experience in nuclear power plant water treatment. • The third presentation was by Anthony Rossi of GE Water & Process Technologies: ‘PWR Dispersant Review & Update, OptiSperse PWR6600.’ This presentation addressed the dispersion of iron oxides in steam generator (SG) systems using the OptiSperse polyacrylate dispersant, without any sulfates or chlorides. Testing showed very high dispersion activity with very low polyacrylate dosages. The effectiveness of the treatment at reducing corrosion, and thermo-hydraulic instabilities was discussed. Advantages include improved long-term thermal performance of the SG, potential for long-term reduction in routine off-line cleaning frequency, and the long-term goal of a reduction in frequency or complete avoidance of full bundle SG chemical cleaning.
Revision Date: 10/26/2010
Tags: 221113 - Nuclear Electric Power Generation * , GE Water, Dow Water & Process Solutions, Veolia Water, Clarifier, Dispersant, Ultrafiltration, EDI, Corrosion Inhibitor, Filter, Ultrapure Water