corrigendum : rate contract for procurement of soot blower spares - wall blower assy,399292-0045,ir2h, nozzle,390787b000-0053,diamond power, rear cover bushing,ir2h,diamond power, rear cover,ir2h,diamond power, roll pin,863651-2736,diamond power,ir2h, bearing,901113-8900,diamond power,ir2h, bearing&gland assy,ir2h,diamond power, guide flange,396918-010a,diamond power, cam 360 deg,301100-0126,diamond power, neck ring,392825-1127,diamond power,ir2h, trigger shaft assy,ir2h,diamond power, trigger s.....