recent projects - Root cause analysis
Construction Worker Engulfment
(CP)² was retained to determine the root cause of a worker becoming partially engulfed in the bypass piping while installation of the bypass piping for a steam bed repair project was being completed. (CP)² interviewed participants, as well reviewing work flow, and then developed the root cause analysis for the accident.
Diversion Dam Radial Gate Binding
(CP)² was retained to perform a causal analysis for a radial gatefailing to
fully close after modification of the gate trunnions. (CP)²visited the project
site, reviewed the project management plans,engineering design,
fabrication inspections, and developed theroot and contributing causes,
as well as recommendations forchanges prior to modifying the other gates.
Concrete Truck Rollover
(CP)² was retained to investigate the cause of a concrete truck rollover accident while transporting concrete on a single lane mountainous road with traffic controls. (CP)² visited the accident and project location, interviewed participants, as well reviewing work processes, and then developed the root cause analysis for the accident.
High Pressure Steam Line Support Failures
(CP)²’s client found two broken pipe supports on their high-pressuresteam
line during operation. (CP)² visited the plant and reviewed the relevant
engineering documentation. (CP)² determined that the causeof the support
failures were thermal overloads of the pipe supports. Thecorrective action
was to re-install the supports in a correctedconfiguration.
Condensate Pump Startup Water Hammer
During startup of the condensate pump, (CP)²’s client would oftentimes
experience a water hammerof varying intensity, sometimes strong enough
to be heard and felt in the control room. (CP)² determined the root cause
of the water hammersto be formation of a vapor bubble in the pump
discharge piping and subsequent collapse when the pump was started. The
piping was modified preventing recurrence of the water hammers.
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