Quote:
Originally Posted by aksunil
Thank you Mr Stevens for an intelligent technical diagnosis and a prompt reply.
We were also thinking in the same line. We had adopted many methodology to identify the leak or any after combustion. We had used the explosive meter, we had analysed the GT turbine compartment air at defferent locaton with gas chromatograph, we had used thermal imaging and also pyrometer to identify varying range of gas and temperatures. In none of the methods we could find even traces of gas or oxydation tendency.
Based on these we had deciding to run the machine till M.I which is due in september 2010
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We had similar experinces and upon further study it turned out that the leaks sufraced after water washes. Apparently water wash effulent would make its way from the CDC to the outer crossfire packing rings and the graphite would get wet. Upon startup the hot air would just blow them out. Be careful with pushing too much water into your unit which could flood the drains and water will make it way up the CDC and out towards the FWD combustion can areas. Watch out for those extra rinses and not fully opening all WW drains. thanks