HIRING OF SERVICES FOR MAINTENANCE, ANNUAL EXAMINATION, LOAD TESTING AND CERTIFICATION OF 15T/10T/7.5T/5T/3T CAPACITY OVERHEAD HOT&EOT CRANES AT PS1, TPS, PS2, PS3 & NSPL-NDT UNDER PS3-JORHAT MAINTENANCE BASE FOR THREE YEARS EXTENDABLE BY ONE YEAR ON SATISFACTORY SERVICE.