City Gas Distribution (CGD) Projects

Complete engineering and advisory services for CGD infrastructure — connecting cities to natural gas through safe, efficient, and PNGRB-compliant distribution networks.

City Gas Distribution pipeline network engineering by HRP Infra

Engineering India's Gas Distribution Future

India's rapid expansion of City Gas Distribution networks presents a significant engineering challenge. HRP Infra supports CGD entities — both authorised entities and their EPC contractors — with technical expertise spanning network design, route planning, regulatory submissions, and construction supervision.

Our team brings hands-on experience with GIS-based pipeline mapping, hydraulic network modelling, and PNGRB technical standard compliance, enabling faster approvals and cost-optimised infrastructure roll-out across urban and semi-urban geographies.

City Gate Station (CGS) & district regulating stations
Steel trunk mains & medium pressure networks
PE distribution network design for PNG households
CNG mother, online, and daughter booster stations
Industrial & commercial connection engineering

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CGD Network Architecture

We engineer each layer of the CGD network hierarchy — from high-pressure transmission to the last-mile household connection.

City Gate Station (CGS)

Pressure regulation, metering, odorisation, and ESD systems at the entry point of natural gas into a city's distribution network from a transmission pipeline.

Steel High & Medium Pressure Trunk Main

ERW/DSAW steel pipeline design for the high-pressure (above 4 bar) and medium-pressure (0.1–4 bar) backbone network, including DRS and SRS stations.

PE Low-Pressure Distribution Network

Polyethylene (PE 80/100) pipeline network design for low-pressure household and commercial connections, including hydraulic simulation and optimised loop design.

Household PNG Connection

Service line design, meter installation specifications, internal piping standards, and mass roll-out management documentation for domestic piped natural gas connections.

CNG Stations

Mother, online, and daughter booster CNG station design — compression equipment selection, pressure vessel sizing, cascade systems, dispensing layouts, and fire protection.

What We Deliver

Our service portfolio covers the full project development and engineering value chain for CGD entities and their contractors.

GIS-Based Network Mapping

Spatial pipeline network design with GIS integration, enabling accurate route planning, conflict identification, and as-built documentation.

Hydraulic Network Modelling

Steady-state and extended-period simulation of gas distribution networks using SYNERGI Gas or equivalent to optimise pipe diameters and operating pressures.

DPR & PNGRB Submissions

Detailed Project Reports, technical feasibility studies, and documentation for PNGRB authorisation and periodic performance review submissions.

Detailed Engineering Design

Complete design deliverables — alignment sheets, BQ, crossings design, station P&IDs, and construction specifications compliant with PNGRB Technical Standards.

Construction Supervision & QA/QC

Field inspection, welding and coating quality control, pressure testing witnessing, and as-built survey management during network construction.

Integrity Management & O&M Advisory

Pipeline integrity management plans, CP system monitoring protocols, and operations & maintenance procedure development for network reliability.

PNGRB Compliance & Regulatory Support

Navigating PNGRB regulations is central to any CGD project. Our team provides end-to-end regulatory support to keep your project on track.

PNGRB Technical Standards Compliance

All engineering deliverables are designed in full conformance with PNGRB (Technical Standards and Specifications including Safety Standards for City or Local Natural Gas Distribution Networks) Regulations 2008 and subsequent amendments.

Minimum Work Programme (MWP) Support

Assistance with planning and tracking Minimum Work Programme milestones — including steel network rollout, PNG household connections, and CNG station commissioning — to meet PNGRB commitments and avoid penalties.

DFR Preparation for OISD & CCE Approvals

Preparation of Design Feasibility Reports for obtaining Chief Controller of Explosives (CCE) and petroleum & natural gas safety approvals required before pipeline construction.

Third-Party Inspection (TPI) Coordination

Liaison with PNGRB-empanelled third-party inspection agencies for mandatory stage inspections of steel pipelines, fittings, and station equipment during construction.