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Failure of Water Piping in an Apartment

A 250-unit apartment complex experienced widespread leaks in the hot and cold water piping systems. The reports written by previous experts hired by the builder were inconclusive as to the cause of the failures in this galvanized steel piping. APTECH was hired to take over the investigation. We found extensive internal corrosion during a field examination, and that the failures occurred predominantly in the hot water piping. The root cause of the problem was identified as poor quality of welds and galvanized coatings. We also reviewed the other experts' reports and outlined the needs for additional data to supplement this previous work

Satish Almaula		Plant failure and root cause analysis; process and design engineering analysis; process technology development and testing; plant engineering, operations, maintenance and safety management; plant and process control system management.

Philip Lindsay, P.E.		Corrosion failure analysis, metallurgy, piping systems, corrosion mitigation, materials selection.

Eric Sullivan, P.E.		Metallurgy, welding, failure analysis, fire and explosion investigations, turbines, equipment, piping.

Michael Cronin, P.E.		Stress analysis, fracture mechanics, design evaluation, engineering mechanics