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Pressure regulators problem.

Pressure regulators problem. Pressure regulator type. Sample #. Tested. Test result. Comments. Backhofen Instrum AG LPRI. 2048. 7.09.04- 19.09.04. 50% after 115h in all zone. > 40 %/100 h. 2049. 6.10.04- 11.10.04. 50% after 93h in all zone. 50 %/100 h. 2049-2

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Pressure regulators problem.

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  1. Pressure regulators problem. S.Konovalov "Pressure regulators."

  2. Pressure regulator type Sample # Tested Test result Comments Backhofen Instrum AG LPRI 2048 7.09.04- 19.09.04 50% after 115h in all zone > 40 %/100 h 2049 6.10.04- 11.10.04 50% after 93h in all zone 50 %/100 h 2049-2 after flushing 25.10.04- <2% after 140h Electronegative impurities 1060  27.09.04 Slight Si contamination, organics Chemical test Zimmerli ZM-R25S 2045 23.08.04- 6.09.04 25% after 254h 10 %/100 h 2050 6.10.04- 15.10.04 13% after 185h 7 %/100 h 2050-2 after flushing 25.10.04- 1.11.04 12% after 140h 8.6 %/100 h 2052 after flushing 25.10.04- 1.11.04 25-45% after 140h in all zone 18-32%/100h 2053 25.10.04- 2-3% after 140h 1058 2.07.04 No Si, organics Chemical test S.Konovalov "Pressure regulators."

  3. Initially the sample gave a large amount of electronegative impurities. Sample was flushed with Ar-CO2 mixture flow during one week (gas flow 10l/h no heating). Very big gas gain drop ~50 % in all irradiation area after 115 hours of irradiation. Backhofen. Sample #2048 S.Konovalov "Pressure regulators."

  4. Very big gas gain drop ~50 % at the end of irradiation area, 5% gas gain degradation in the beginning of irradiation zone after 93 hours of irradiation. Backhofen. Sample #2049 S.Konovalov "Pressure regulators."

  5. The same as 2049 after flushing and heating (TA1-GG) Ageing less then 2% after 140h of irradiation Test is going on. Backhofen. Sample #2049-2 S.Konovalov "Pressure regulators."

  6. Slight Si contamination, organics. Backhofen. Sample #1060 S.Konovalov "Pressure regulators."

  7. 25% ageing after 245h Zimmerli. Sample #2045 S.Konovalov "Pressure regulators."

  8. 13% ageing after 185 h 5-7% ageing after 147h Zimmerli. Sample #2050 S.Konovalov "Pressure regulators."

  9. The same as 2050 after flushing and heating (ageing team) 12% ageing after 140 h Zimmerli. Sample #2050-2 S.Konovalov "Pressure regulators."

  10. after flushing and heating (TA1-GG) 25-45% gas gain drop after 140 h Zimmerli. Sample #2052 S.Konovalov "Pressure regulators."

  11. Up to 2-3% ageing after 140 h Zimmerli. Sample #2053 S.Konovalov "Pressure regulators."

  12. No Si,organics Zimmerli. Sample #1058 S.Konovalov "Pressure regulators."

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