• JAYACHANDRAN CHEKKALA

Process Industries comprises of many complex instruments for the correct and synchronized operations. Gas chromatograph (GC) is one of such complex instruments, used to control quality. Injector, column, detector and recorder are critical parts of GC functionality. During Concurrent Analysis, single GC will be able to analyse multiple input samples at simultaneously using multiple Detectors/Columns. GC output the separated measured components through chromatogram consists of series of peaks. Peak height, width, shape depends upon component concentration/retention time and health of critical parts of GC. The tendency of slight changes of peaks in chromatograms over time will be of use in predicting the fault at earlier stages, as how an expert predicts the possibility of fault. This paper is summary of survey of various ways of GC fault detection from symptoms and expert data, from other sources and how the fault gets confirmed. Further exploration will be done for the fault detection during concurrent analysis in GC using multiple columns and detectors, further, how to confirm the fault with additional check

"FAULT DETECTION IN GAS CHROMATOGRAPH DURING CONCURRENT ANALYSIS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 6, page no.i708-i715, June-2023, Available :http://www.jetir.org/papers/JETIR2306878.pdf

"FAULT DETECTION IN GAS CHROMATOGRAPH DURING CONCURRENT ANALYSIS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 6, page no. ppi708-i715, June-2023, Available at : http://www.jetir.org/papers/JETIR2306878.pdf