Certificate of Compliance

Compliant item: TVC and VAC
Certificate holder: Sterling & Wilson
Certificate ID: 145.499.7
Certification type: Site
Category: Smoke detection and ventilation
Initial certificate: 2022/10/13
Current certificate: 2022/10/13
Expire date: 2025/10/13


Risknowlogy certified the Tunnel Ventilation System (TVS) and Ventilation Control System (VAC) of the Chennai Metro Rail System. The certification was performed according to EN 51028, on SIL 3 level and included:

  • Software planning phase

  • System development phase

  • Software requirements phase

  • Software architecture and design phase

  • Software component design phase

  • Software component implementation phase

  • Software component testing phase

  • Software integration phase

  • Software validation phase

  • Software deployment and maintenance phase

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