Core Energy Systems Limited provides end-to-end Operations & Maintenance (O&M) services for complex, safety-critical assets across Nuclear, Defence & Aerospace, Renewable Energy, Oil & Gas, and diverse industrial sectors. Our O&M approach focuses on operational reliability, asset integrity, and sustained performance across the full lifecycle of high-value infrastructure.
We deliver integrated capabilities covering plant operations, preventive and predictive maintenance, condition monitoring, and asset health management, enabling high availability and reduced operational risk. Backed by multidisciplinary engineering expertise and a highly skilled workforce, Core supports mission-critical facilities operating in demanding environments.
Certified to ISO 19443, we embed nuclear-grade quality, safety, and compliance across all O&M engagements, extending the same rigour to Mining, Thermal Power, Steel, Process Industries, and Railways. Through digital tools and data-driven maintenance strategies, we enhance equipment uptime, optimise performance, and ensure safe, efficient, and sustainable operations.
Nuclear
Operation & Maintenance
- Operation and maintenance of systems in radiation-controlled areas (boilers, chillers, ventilation units, air compressors, pumps, and valves)
- Compressed air plant management for a nuclear power plant
- Operation and maintenance of material handling equipment (Cranes, electric hoists, and manual hoists, etc.)
- Radiological laundry processing for decontamination of protective clothing
- Nozzle extraction, cleaning, and reinstatement at NDCT/IDCT structures
- O&M works for the safe operation of waste management facilities
Manpower outsourcing
- Specialised staffing for nuclear waste management facilities.
- Project management services
- Manpower outsourcing for miscellaneous jobs
- Data handling and data entry personnel.
- Outsourcing of Manpower for Centralised Tender Cell operations and a nuclear training centre.
- Planning and supervision for civil construction works
- Planning and supervision for mechanical works.
Plant Operations
- Electrical support for pre-commissioning, commissioning, and operational activities across plant equipment and systems.
Electrical Plant Operations
- Store and warehouse management, including preservation of plant materials and housekeeping
Mechanical Plant Operations
- Assistance in operating DM plants, filtration units, and chlorination systems.
- Operations of reprocessing facilities (radiation surveillance, analytical tasks, decontamination work).
- Operations of fuel handling systems.
- Material shifting, equipment movement, and sump dewatering activities.
- Operation of plant utility equipment and ancillary systems.
Plant Maintenance
- Electrical auxiliary maintenance of power transformers, HT/LT motors, and UPS systems.
- Execution of critical and non-critical electrical maintenance activities.
Electrical Maintenance
- AMC for seawater pumps and motors supporting process water, fire water, TG, and feedwater systems.
- Maintenance of ventilation systems and dryer plants.
- Upkeep of TWS, coarse screens, and stop-log gates.
- Overhauling and maintenance of pumps, blowers, chillers, compressors, valves, and fans.
Mechanical Maintenance
- Material handling support for mechanical systems.
- Maintenance of primary and auxiliary mechanical equipment.
- Refurbishment of static, semi-rotary, and rotary equipment.
- Maintenance support for turbines, generators, compressors, valves, and chillers.
- Instrumentation-related maintenance activities.
- Mechanical maintenance of radwaste systems.
Oil and Gas
Operation & Maintenance
- Loading and unloading of liquid hydrocarbons through road loading bays, rail tank wagons, and offshore or port conduit systems for ocean tankers via SBM.
- Comprehensive Operation & Maintenance of CNG Stations
- Operation and maintenance activities at the LPG bottling plant
Manpower outsourcing
- Supply of graduate engineers for the LPG Plant pan India
- Certified manpower supply for drilling (offshore), RCM, cementing, and well services
- Graduate Engineers, Diploma Engineer and ITI holders for city gas distribution
- Providing Retired Revenue Manpower
Plant Operations
- Operation of Raw Water Systems, Cooling Towers, and Treatment Facilities, including Wastewater, Spent Caustic, Sewage, and Effluent.
- Integrated Facility Management Services at Oil & Gas Depots
Plant Maintenance
- Rotary equipment - Compressors, Pumps, Gearboxes, Engines, Fans, Blowers, etc.
- Static equipment - Heat Exchangers, Furnaces, Pipes, Flanges, etc.
- Semi-Rotary equipment - Valves, NRV, etc.
- Instrumentation equipment - Weigh Bridge, Flow and Mass meters, and Level gauges, etc.
- Scaffolding Erection
- Mechanical Maintenance Jobs at Refinery