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Shan & Talati

IndiaEngineering, Advisory & Professional Services
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Shan & Talati is now available on NucFinder as a validated supplier.

Shah and Talati is an Engineering and Architectural firm established in 1965 and has been providing professional design services to industrial and infrastructure related markets for the last five decades. With a diverse team of more than 100 structural engineers, architects, project managers, geotechnical engineers, and interior designers, Shah and Talati has clients not only across India but has also managed to span its wings around the world. Shah and Talati has successfully completed projects for various clients, national and international, EPC contractors, Public Sector undertakings as well as public bodies. We have to our credit more than 2500 projects over the span of 50+ years completed successfully. Shah & Talati currently has offices in Baroda and Mumbai.

Site Layout & Zoning

  • Nuclear Island (NI): Houses the reactor, spent fuel pool, and safety systems. Typically enclosed in a seismic Category I pre-stressed concrete containment vessel (PCCV).
  • Turbine & Balance of Plant (BoP): Houses the turbine generators. Requires heavy-duty equipment foundations and isolation for high-speed rotary vibrations.
  • Auxiliary & Radwaste Buildings: Adjacent to the NI, designed for shielding (lead/high-density concrete) and negative air-pressure ventilation to contain airborne contaminants.
  • Administrative & Switchyard: Located in the low-security, "clean" zone of the premises, well outside the primary radiation shielding footprint.

Civil & Structural Engineering

  • Seismic Design: Structures must remain elastic without discernible damage during a Safe Shutdown Earthquake (SSE). Primary foundations often rest on bedrock with base isolation systems.
  • Missile Protection: External walls and roofs must be reinforced to withstand tornado-borne projectiles, aircraft impacts, or internal high-energy line breaks (HELB).
  • Shielding: Depending on the zone, walls are detailed using thick Heavy Concrete (e.g., barite or magnetite aggregates) to attenuate neutron and gamma radiation.
  • Watertightness: Sub-grade structures utilize continuous waterstops, waterproof membranes, and heavy steel liner plates to prevent groundwater ingress and radioactive leaks.

HVAC & Environmental Control

  • Safety Class HVAC: Redundant HVAC trains must be physically separated. They maintain negative pressure in radioactive zones and positive pressure in control rooms to prevent ingress of hazardous materials.
  • HEPA & Charcoal Filtration: Engineered safety features include air cleanup units with HEPA filters to trap particulates and charcoal filters for halogens.
  • Thermal Limits: Premises hosting sensitive electronic I&C (Instrumentation & Control) cabinets must be tightly controlled at 22° C ± 2° C and 40% - 60% relative humidity.

Electrical Distribution (Safety & Non-Safety)

  • Class 1E Systems: Independent, redundant, and physically separated power systems ensuring uninterrupted power to safety-related premises.
  • Physical Separation: Safety-related cables are routed in separate, fire-rated trays (3-hour fire rating).
  • Emergency Power: Seismic Category I structures host redundant emergency diesel generators (EDGs) and battery banks to sustain critical cooling and monitoring for a minimum of 72 hours during total station blackout.

Fire Protection

  • Hazard Barriers: Compartmentalization using 3-hour fire-rated walls, floors, and doors.
  • Suppression: The use of gaseous (e.g., FM-200 or Novec 1230) total-flooding systems in I&C and cable-spreading rooms to avoid water damage to sensitive electronics.
  • Safe Shutdown: Routing of redundant safe-shutdown trains in completely separate fire zones to ensure a fire in one area does not disable the plant's ability to shut down safely.

Codes & Standards Reference

  • Civil/Structural: ASCE 43 (Seismic Design), ASME BPVC Section III (Containment).
  • Electrical: IEEE Standards for Nuclear Power (Class 1E circuits).
  • Safety: IAEA Design of Nuclear Power Plants.

Explore the company profile, capabilities, and catalog coverage on NucFinder.

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