What is the industry experience in handling coker gas oil in hydrocracker feed stock? How much absorption of HCGO ( as a wt% in total feed) has been achieved / being designed in existing units / revamps / new units ? Is there an optimum on HCGO portion in Hydrocracker feed mix ? Additional information on experience in critical equipment like Feed Filter / charge pump / Reactors/ RGC / Make Up Compressors / Fired Heaters/ Low pressure section / product treatment etc. would be appreciated.