Operation & Maintenance

NSTPL operates and maintains PNG / CGD networks across residential, commercial and industrial geographic areas (GAs) on behalf of authorised entities. Our O&M model delivers round-the-clock patrolling, preventive maintenance schedules, and rapid breakdown response — all aligned to PNGRB norms and client-defined SLAs.

• 24×7 patrolling of PNG routes on fixed daily stretches to prevent pipeline disruptions
• Preventive & corrective maintenance as per SLA / SOW definitions
• Routine PNG maintenance including line integrity checks and pressure testing
• Breakdown maintenance with 24×7 equipment & manpower mobilisation
• Fault identification, isolation and rectification for MDPE and GI systems
• O&M team with fusioner, assistant, helper, four-wheeler and driver — 24×7
• Fusion machine, MDPE cutter, portable genset and supporting tools on standby
• Leak detection, pressure monitoring and gas quality checks
• Maintenance of DRS, RMS, MRS stations and ancillary equipment
• Cathodic protection system monitoring and maintenance
• Documentation, log maintenance and regulatory reporting
• Emergency response procedure (ERP) drill support and coordination

Our pipeline maintenance services cover the complete gamut of activities required for sustained, safe and efficient operation of buried and above-ground pipeline infrastructure across oil, gas and water distribution networks.

• Inspection and maintenance of MDPE (20–125 mm dia) and GI distribution lines
• HDPE pipeline maintenance (75–315 mm dia) for high-pressure segments
• Pig running, gauging and intelligent pig inspection coordination
• Coating rehabilitation and wrapping of exposed or corroded sections
• Valve maintenance, testing and replacement (ASME B16.33 compliant)
• Pressure relief and regulator servicing at DRS/MRS stations
• Warning mat inspection and replacement along buried routes
• HDD-based trenchless repairs with minimal surface disruption
• OFC duct and conduit integrity checks within pipeline corridors
• Cathodic protection current surveys and rectifier maintenance

NSTPL's telecom and fibre O&M team manages the ongoing health, performance and availability of fibre optic networks, active telecom infrastructure and associated works — for Indian telecom operators, utilities and enterprise clients operating domestic networks across the country.

• Optical fibre cable (OFC) patrolling and right-of-way (ROW) monitoring
• OTDR testing, fault isolation and fibre splicing for restoration
• Joint enclosure inspection, re-sealing and replacement
• Duct rodding, blowing and microduct restoration
• Active network element maintenance (OLT, ONU, switches)
• Tower infra inspection: earthing, lightning protection, structural audit
• BTS / NodeB / eNB site maintenance and battery upkeep
• Fibre route documentation, GIS mapping update and as-built records