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Sodium Facilities Group

B.K.Nashine, AD, SFG

B.Babu, Head, DD&RSD

D.Ponraju, Head, SED

I.B.Noushad, Head, SGTFD

 

Device Development & Rig Services Division (DD&RSD)
Safety Engineering Division (SFD)

Steam Generator Test Facility Division (SGTFD)

 

ACTIVITIES
  • Operation and maintenance of experimental sodium facilities for testing full scale, prototype FBR components in sodium environment

  • Developmental activities in sodium technology like, cleaning of cold trap, regeneration of cold trap and safe disposal of waste sodium

  • Sodium handling, fire fighting techniques and conducting training programmes on sodium fire fighting

  • Fabrication activities related to sodium systems and cover gas systems

  • Chemical cleaning activities of sodium components and pipelines

  • Design, construction and maintenance of electrical power system and preheating system of sodium loops

  • Design, construction and maintenance of Electrical system of water test facilities

  • Design and Development of ECR type heaters for sodium  preheating  applications

  • Design, manufacture and sodium calibration of PM Flowmeters

  • FEM analysis of Mutual Inductance Level Probes, Temperature Sensitive Magnetic Switch

  • Design and Analysis of Annular Linear Induction Pumps and DC & AC Conduction Pumps

  • FEM analysis of Permanent Magnet Flowmeter and Eddy Current Flowmeter

  • Design of various FBR electromagnetic devices like electromagnets and magnetic bearing etc. and analysis of these devices using commercial FEM software

  • Calibration of sodium sensors for reactor use

  • Development and maintenance of Data Acquisition and Control System (DAS) for Sodium Rigs, water facilities, Steam generator test facility and pyro-processing facility

  • Design and development of sodium compatible high temperature sensors and associated electronics

  • Operation and maintenance of Creep and Fatigue sodium loops

  • Modification and commissioning of existing facilities for testing new materials

  • Design, Fabrication, erection and Commissioning of new test facilities for conducting experiments  in sodium

  • Design, development and commissioning of Instrumentation and control systems for sodium facilities

  • Sodium handling, transport/ transfer and chemical cleaning of sodium components after completion of experiments

  • Development and validation of high fidelity computational tools to simulate sodium pool and spray combustion phenomena

  • Assessment of various modes of sodium fire (spray, pool and combined) scenarios in SFR enclosures using the in-house computer codes

  • Extension of in-house fire hazard analysis code for sodium and conventional fire analysis

  • Mechanistic analysis of intra-subassembly molten core material dispersion due to sustained power coolant mismatch

  • Development and validation of in-house numerical codes to simulate inter-subassembly molten core material dispersion phenomenon using computational multiphase fluid dynamics approach

  • Consequences assessment of neutronic recriticality resultant energetics due to core wide disruption under severe accident scenario

  • Assessment of debris bed long term coolability characteristics of the single plate in-vessel core catcher design with multiple heat transfer paths under large core meltdown scenario

  • Development of multidimensional coupled neutronic and thermal hydraulic numerical models to address recriticality considerations due to core melting scenarios using multiphysics computational tools

  • Development of numerical models for design optimization of the laboratory scale induction melting system for molten fuel coolant interactions resultant debris characterization

  • Water hammer studies on various liquid filled piping configurations due to pressure surges

  • Coupled two-phase flow and fluid structure interaction analysis

  • Design, construction and commissioning of all experimental facilities at SED

  • Complete responsibility of internationally acclaimed SOFI, MINA and THEME experimental facilities

  • Conceptualization, design and construction of SASTRA facility

  • Material selection and feasibility studies towards development of sacrificial layered core catcher for future fast reactors 

  • Studies on flow blockage effects in subassembly at BLESS Loop

  • Compete engineering support and active participation in experiments of other facilities such as PATH, SFEF, SOCA and MFCI

  • Simulant experiments as well as numerical simulations related to PAHR to understand the Core melting, Molten core material dispersal, Melt Fragmentation/ Freezing, Debris settling & bed formation & Heat transferred to the coolant, Heat removal from dislocated core debris on Core-Catcher.  

  • 1: 4 experiment facility to study after CDA thermal loading

  • Study of Role of coolant depth, melt temp, melt mass on fragmentation & debris formation and distribution.

  • Measurement of Porosity & MMD of the Debris.

  • Study of Debris Bed Heat Transfer.

  • Measurement of pressure generated during FCI.

  • Temperature mapping with bottom heated debris in 1D & 2D geometries.

  • Experiments to simulate the breaching of grid plates by molten fuel and the subsequent fragmentation and debris settling phenomenon on core catcher with initial pressure of molten jet varied from 0-2 atm gauge pressure in Woods Metal-Water System.

  • Melt through time, area of opening / hole formed in GP-1 and GP-2, Debris distribution in GP and CCP, debris profile and MMD of the debris estimated.

  • Numerical prediction of melt-through time.

  • Experiments have been carried out with & without dummy SAs on top grid plate.

  • Videography at 1000 fps

  • HEATRAN-1 code developed and used for conduction problems and melting problems

  • Commercial CFD codes used for solving natural convection in enclosures and conjugate heat transfer problems

  • Numerical heat transfer analysis for jet breakup,  molten material relocation to core catcher and  design of improved core catcher 

  • Validation of computational models with experimental / analytical / benchmark solution

  • Development of heat transfer correlations from experimental / numerical results

  • Computation model for porous media heat transfer has been validated to simulate debris bed heat transport.

  • Development of an Advanced Sub-channel Thermal Hydraulic Analysis Systems frame work to study the effect of cross flow mixing on thermal hydraulic safety margins.

  • Qualification of Leak Collection System of PFBR

  • Large scale experiments on sodium spray fire and pool fire

  • Studies on sodium droplet  

  • Mitigation of sodium pool fire by nitrogen purging

  • Studies on Sodium Cable Interaction

  • Suppression of chemical activity of sodium by using nanomaterials

  • Development of carbon microsphere for sodium fire extinguishment

  • Studies on sodium infiltration in irradiated metallic fuel

  • Development of scrubber system for removal of sodium aerosol in air

  • Development of sodium disposal system

  • Development of sodium distillation system for sodium purification

  • Sodium spray characterization (droplet size distribution)

  • Development of numerical code for sodium fire studies   

  • Numerical simulation of gas bubble rising in a liquid pool of SFR

  • Sodium school for providing training in sodium Science and Technology