Tender For experienced contractors/ vendors for following categories-general construction services for operation & maintenance (o&m) related projects, supply of construction related bulk items, asset integrity managementservices for assets including life extension and obsolescence studies, advanced ndts, rcm and risk based inspection study & implementation, design, engineering, supply of equipment & material and provision of services for security & plant surveillance and security automation system, hiring of accommodation vessel / awb with dp capabilities, pigging operations for 12 effluent pipeline ,subsea pipeline & manifold life extension ,crp underwater jacket inspection ,condensate displacement via pigging ,progressive cleaning & intelligent pigging of 24 subsea pipeline, procurement, construction and installation services for ot modifications related to installation of flare gas recovery unit (fgru) facilities and associated civil and piling works, construction & installation services for ot modifications related to installation of hydrocarbon dew point depression unit (hcdpdu) facilities incl. associated civil & piling works and supply of miscellaneous project items, third party inspection agency services and technical verification related to review of design & engineering documents; onsite surveillance, inspection and testing for ot modification project related to installation of hcdpdu facilities & other o&m projects, supply of equipment, materials and bulks for ot modifications related to installation of hcdpdu facilities & other o&m projects, miscellaneousllaneous services such as mws services, logistics & transportation services for hcdpdu facilities & other o&m projects ,engineering, procurement, installation & commissioning (epic) of subsea facilities, rigid & flexible pipelines, umbilicals and flying leads for deep water field development ,project management consultancy services for deepwater field development