COMPREHENSIVE RAILWAY SERVICES

End-to-End Signalling Engineering Across The Railway Lifecycle

From preliminary feasibility surveys and vital circuit schematics to CENELEC SIL-4 system assurance and station commissioning, AAV Works delivers certified railway engineering for high-density corridors.

DISCIPLINE 01 • VITAL CIRCUITS RDSO & IRS COMPLIANT

Railway Signalling & Circuit Engineering

Our proficient engineering team specializes in crafting fail-safe circuits that serve as the bedrock of modern Indian Railways infrastructure across all major electronic interlocking systems:

Electronic Interlocking (EI) Application Logic

Scheme plans, Selection tables (Table of Control), VDU Control layouts, Application Logic, and Interface Circuits for Medha, Kyosan, Siemens, and Ansaldo/Hitachi.

ATP & Kavach / TCAS Modernization

Kavach / TCAS trackside integration, ETCS Level 1 & 2 circuit design, PTC interfaces, and Communication-Based Train Control (CBTC) compatibility.

Independent Proof Consultancy (IV&V)

Licensed IRSE / IRSTELO consultants who have completed 100+ Independent Verification and Validation activities across Indian Railways with zero rework.

DISCIPLINE 02 • SITE EXECUTION 350+ STATIONS COMMISSIONED

Turnkey Projects & Station Commissioning

Our dedicated field deployment engineers have successfully installed, tested, and commissioned more than 350+ stations across India under active rail traffic conditions:

Outdoor & Indoor Gear Installation

Track circuits, digital axle counters (HASSDAC/MSDAC), electric point machines, signal units, and high-density relay racks with zero cabling clashes.

Site Acceptance Testing (SAT)

Rigorous live simulation, interlocking square sheets, route locking cross-checks, and parallel testing protocols without disrupting train operations.

Safety Audits & CRS Regulatory Signoff

End-to-end preparation of Commissioner of Railway Safety (CRS) sanction dossiers, safety certification documentation, and final handover audits.

DISCIPLINE 03 • SYSTEM ASSURANCE CENELEC EN 50126/128/129

System Assurance & RAMS Management

RAMS (Reliability, Availability, Maintainability, Safety) management stands at the core of our assurance engineering, ensuring fail-safe rail operations to international benchmarks:

CENELEC European Rail Standards Compliance

EN 50126 (RAMS Lifecycle Process), EN 50128 (Software for Railway Control & Protection), and EN 50129 (Safety-Related Electronic Signalling Systems).

Hazard Analysis & Safety Cases

Preliminary Hazard Analysis (PHA), FMECA, Fault Tree Analysis (FTA), Hazard Logs, and preparation of rigorous SIL-4 Safety Cases for independent safety auditors.

Proven Global MNC Engagements

Platform Screen Door (PSD) SIL 2 Safety Documentation for BEL, Eastern Dedicated Freight Corridor (EDFC) verification for Siemens, and multi-OEM projects.

DISCIPLINE 04 • SOFTWARE TOOLS IN-HOUSE DIGITAL TOOLS

Rail Software & Signalling Automation

We develop proprietary software applications that eliminate tedious manual drafting errors, accelerate Table of Control verifications, and stress-test dense railway corridors:

SENTRIS (Automated Factory Testing Engine)

Automated Factory Acceptance Testing (A-FAT) application ensuring zero-error validation of Electronic Interlocking data tables in under 4 hours.

SENS Interactive Traffic Simulator

Micro-simulation tool allowing interlocking designers and railway dispatchers to stress-test timetable headways, route locks, and incident responses.

AutoCAD Logic Compiler (Algen & L2L)

Transforms station yard schematics into certified Boolean logic equations automatically, cutting manual drafting cycle times by up to 60%.

EXECUTION RIGOR

Our 5-Phase Signalling Lifecycle

A structured, auditable quality framework designed for first-pass CRS approval and zero-defect reliability.

01

Feasibility & Field Survey

On-site gradient, curvature, point machine clearance, and signal sighting committee reviews.

02

SIP Drafting & TOC

Signal Interlocking Plans, route tables, dog charts, and overlap isolation calculations.

03

Application Logic & Circuits

Boolean interlocking equations, wiring schedules, contact analyses, and rack layouts.

04

Automated FAT Testing

Virtual yard testing via SENTRIS tool with automated test vector injection and zero-error signoff.

05

Site SAT & CRS Sanction

On-site bell testing, square sheets validation, safety dossiers, and commercial commissioning.

REGULATORY & QUALITY STANDARDS
CENELEC EN 50126 CENELEC EN 50128 CENELEC EN 50129 SIL-4 CERTIFIED RDSO / IRS COMPLIANT IRSE FELLOWS

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