The fertiliser plant operates under high-pressure conditions, utilizing natural gas as the raw material to produce urea fertiliser. The large size Compressor plays a crucial role in compressing the gas. If the gas pressure drops below a certain level, the Compressor kicks in to compress it and push it back into the header using a non-return valve (NRV) between the inlet and outlet. This raises the outlet pressure and improves the overall efficiency of the fertiliser plant. The Compressor is an essential component found in most energy-sensitive fertiliser plants. However, in one plant located in northern India, this Compressor installation remained non-functional due to tripping caused by low flow.