Downtime may be really expensive.
Regardless of any precautions and preventive maintenance practices, sometimes things just go wrong, and need to be fixed as soon as possible to avoid expensive machine downtime. Fixing a problem requires an understanding of how to isolate and define it.
Troubleshooting and Root Cause Analysis (RCA) must be carried out to define the elements at the root of the failure reaction chain and to fix the most probable causes of failure, which are often inter-linked.
CST has the technical capability and resources to respond quickly to field emergencies, analyze the problem, propose solutions, and supply any components required to fix the machine.
With a probability assessment based on experience and a detailed analysis of the symptom-cause-failure chain, the most probable cause and its relevant viable solution can be identified.
CST has a dedicated group of senior engineers who can run multidisciplinary RCA to understand problems, perform field investigations / measurements and recommend corrective actions.
CST can also provide independent third-party advice for most machinery-related problems.
Machinery reliability is often impaired by recurrent failures, which are accepted by operators and expected to be unavoidable. With its design engineering know-how and experience, CST can study the behavior of the machine in its environment from scratch and accept the challenge to identify sustainable remedies, thus overcoming an apparently unimprovable issue.
SOME EXAMPLES OF CST'S RCA & TROUBLESHOOTING ACTIVITY
Paper mill compressor piston seals quick wear was troubleshooted by piston rings improvement
High piping vibrations on a Hyper-compressor was investigated and cured by strain-gage pressure measurement, pulsation analysis, orifices insertion and support modification
After two catastrophic failures of an integrally geared centrifugal compressor, CST RCA allowed to put it back online successfully by changing bearings.
Two steam turbines had the same severe rubbing at the start-up. CST found the cause and the solution
Frequent piping support failure was eliminated by FEM analysis and new support design
Repeated Hyper-compressor interstage cooler ruptures due to excessive vibrations were cured by FEM study, new support design introduced
RCA assessed the failure being caused by overpressure due to sudden liquid ingestion