Research Reactor Details - LENA, TRIGA II PAVIA


Country Italy (Italian Republic)
Facility Name LENA, TRIGA II PAVIA
Facility Number IT-0005
Status OPERATIONAL
Last Updated 2009/03/23


General Data
Owner  UNIVERSITA DI PAVIA
Operator  LABORATORIO ENERGIA NUCLEARE APPLICATATA
Licensing  MINISTERO ATTIVITA PRODUTTIVE
Construction Date  1964/09/01
Criticality Date  1965/11/15
Safeguards  IAEA, EURATOM
Initial Cost 250000
Annual Cost 700 000
Total Staff 18
No of Operators 9


Technical Data
Reactor Type TRIGA MARK II
Thermal Power, Steady (kW) 250.00
Max Flux SS, Thermal (n/cm2-s) 1.0E13
Max Flux SS, Fast (n/cm2-s) 1.2E13
Thermal Power, Pulsed (MW) 250.00
Max Flux Pulsed, Thermal (n/cm2-s) 1.1E16
Max Flux Pulsed, Fast (n/cm2-s) 1.2E16
Moderator H2O,ZRH
Coolant LIGHT WATER
Natural Convection Cooling YES
Forced Cooling NO. Forced ht removl from tnk
Coolant Velocity in Core 450 L/MIN
Reflector GRAPHITE
Reflector Number of Sides radial and axial
Control Rods Material B4C
Control Rods number 2 B4C + 1 borated graphite


Experimental Facilities
Horizontal Channels 6
Horizontal Max Flux (n/cm2-s) 2.0E12
Horizontal Use RESEARCH
Vertical Channels
Vertical Max Flux (n/cm2-s)
Vertical Use
Core Irradiation Facilities 3
Core Max Flux (n/cm2-s) 1.0E13
Reflector Irradiation Facilities 1rot. rack
Loops Number
Loops Max Flux
Loops use


Fuel data
Origin of Fissile Material USA & France
Enrichment Supplier USA & France
Equilibrium Core Size 80 ELEMENTS
Plates per Element
Dimensions of Plates
Rods per Element 1
Dimensions of Rods, mm 37.5 X 725
Tubes per Element
Dimensions of Tubes, mm
Cladding Material AL ALLOY OR SST
Cladding Thickness, mm 0.76 & 0.51
Fuel Material UZRH
Fuel Thickness, mm 36,7D X 356 L
Uranium Density, g/cm3 0.5
Burnup on Discharge, max %
Burnup Average, % 10
Last Shipment Year
Last Receipt Year 1999
Fuel Fabricator GENERAL ATOMICS, USA


Utilization
Hours per Day  8
Days per Week  5
Weeks per Year  42
MW Days per Year  5
Materials/fuel test experiments  Number of runs: 10
Isotope Production  NO
Neutron Scattering  NO
Neutron Radiography  NO
Neutron capture therapy  Patients irradiated: N/A
Activation Analysis  N/A
  • number of samples irradiated
  •  2000
    Transmutation  NO  
    Geochronology  NO
    Teaching  Number of students: 840
    Training  Number of operators/experimenters trained: 4
    Other Uses  Irradiation of electronics devices


    Operating Experience
    Reactor Thermal Power Date of Operational for
    Category Type kW Criticality Construction Years Months
     RESEARCH  TRIGA MARK II  250.00  1965/11/15  1964/09/01  44  6