1. PDS-XADS Structural material to be used in lead- bismuth Development Needs ADOPT Karlsruhe meeting of March 14, 2002 L. CINOTTI Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A.

2. ADOPT Karlsruhe meeting of March 14, 2002 ëWell known materials like 316L and modified 9Cr1Mo seem adequate for use up to 450°C in flowing lead- bismuth with a speed below 2m/s and oxygen activity control. Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Structural material candidate for use in lead-bismuth State of art

3. ADOPT Karlsruhe meeting of March 14, 2002 Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Structural material candidate for use in lead-bismuth 1- Operating Conditions Temperature < 450°C Pb-Bi speed < 0,5 m/s Negligible irradiation Oxygen activity control 2- Selected material Stainless steel 316 L 3- R&D needs Confirmation of the adequacy, particularly for welded joints Components for XADS cooled by Pb-Bi Main vessel IHXs Purification Unit In vessel refuelling system

4. ADOPT Karlsruhe meeting of March 14, 2002 Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Structural material candidate for use in lead-bismuth 1- Operating Conditions Temperature < 450°C Pb-Bi speed < 1m/s Low neutronic irradiation: <2 dpa in the life Oxygen activity control 2- Selected material Stainless steel 316 L 3- R&D needs Confirmation of the adequacy, particularly for welded joints Components for XADS cooled by Pb-Bi Inner vessel Diagrid

5. ADOPT Karlsruhe meeting of March 14, 2002 Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Structural material candidate for use in lead-bismuth 1- Operating Conditions Temperature < 500°C Pb-Bi speed < 0,5 m/s High neutronic irradiation: < 30 dpa over lifetime Oxygen activity control 2- Selected material Modified 9Cr 1Mo (Reference) Aluminised AIM austenitic stainless steel Nimonic PE 16 Russian material 3- R&D needs Confirmation of the aluminization process Confirmation of the adequacy of the materials, particularly for welded joints Components for XADS cooled by Pb-Bi Fuel rods

6. ADOPT Karlsruhe meeting of March 14, 2002 Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Structural material candidate for use in lead-bismuth 1- Operating Conditions Temperature< 450°C Pb-Bi speed < 0,5 m/s High neutronic irradiation: < 30 dpa over lifetime Oxygen activity control 2- Selected material 9Cr 1Mo 3- R&D needs Confirmation of the adequacy of the materials, particularly for welded joints Components for XADS cooled by Pb-Bi Fuel wrapper

7. ADOPT Karlsruhe meeting of March 14, 2002 Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Structural material candidate for use in lead-bismuth 1- Operating Conditions Temperature< 450°C Pb-Bi speed < 0,5 m/s High neutronic irradiation: < 40 dpa over lifetime Oxygen activity control Spallation products 2- Selected material 9Cr 1Mo 3- R&D needs Confirmation of the adequacy of the materials, particularly for welded joints Components for XADS Target Unit

8. ADOPT Karlsruhe meeting of March 14, 2002 Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Ansaldo Nucleare Divisione di ANSALDO ENERGIA S.p.A. Structural material candidate for use in lead-bismuth 1- Operating Conditions Temperature< 500°C Pb-Bi speed < 2 m/s High neutronic irradiation: < 15 dpa per year High proton flux: < 30 µA/(cm2*s), 600 MeV for Pb-Bi system < 50 µA/(cm2*s), 600 MeV or 30 µA/(cm2*s), 800 MeV for gas system Oxygen activity control Spallation products 2- Selected material 9Cr 1Mo ……….. 3- R&D needs Confirmation of the adequacy of the material Components for XADS Beam Window