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As a Central source for water distribution, emergency services, and communications transmission, the Penn Avenue Tower represents a focal point for the City of Richfield, Minnesota. The 1.5-million-gallon water tower is a multi-column elevated style tank located in a residential and commercial business area on shared property with the City’s No. 2 Fire Station. An engineering evaluation identified the need for complete replacement and maintenance repair of exterior and interior coating systems, along with accessory modifications.
As a Central source for water distribution, emergency services, and communications transmission, the Penn Avenue Tower represents a focal point for the City of Richfield, Minnesota. The 1.5-million-gallon water tower is a multi-column elevated style tank located in a residential and commercial business area on shared property with the City’s No. 2 Fire Station. An engineering evaluation identified the need for complete replacement and maintenance repair of exterior and interior coating systems, along with accessory modifications. The size and scope of the project was complex, as was maintaining City operations and telecommunication services for the duration of the project. The project’s successful completion would hinge on understanding the needs of each of the stakeholders and implementing an overall plan that would take these needs into consideration, along with the constraints of meeting the required project timeline.
This paper discusses the many concerns related to new pipeline construction. Includingsafety, testing, documentation and lessons learned. Also addressed are abovegroundstorage tanks and some of their construction issues.
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MIC-causing microorganisms were investigated in a 16” diameter and 9.6 km long injection water pipeline. Nitrate was added to the water and pigging debris from the pipeline showed that both sulfate-reducing bacteria (SRB), nitrate-utilizing bacteria, and methanogens were present in numbers of 105 – 106 cells/g.
The sheer volume of piping systems, both insulated and non-insulated, is daunting. Companies, in order to deal with limited inspection resources, have resorted to risk-based strategies in order to prioritize inspection of such systems. By the time surfaces and systems are inspected, they often exhibit wall loss, or pitting corrosion on surfaces. Piping is only as strong as the wall thickness of the original design. When corrosion reduces wall thickness to a minimum required thickness for the given pressure, actions must be taken.