1. Ulf Odén WP Manager Target System
Helium Filter Design
Ulf Odén
WP Manager Target System
20 July, 2019

2. Outline of the presentation
Charge question
Target Cooling System (1010) flow chart
Basic filter design data
CDR design
CDR committee comments and responses
Final Design
Conclusions

3. Charge question
Waste management – helium filter design and handling, handling of waste water from the Target Station systems
(Ulf Odén, Håkan Carlsson, Lennart Stenman)
Charge question: Will the pursued technical solutions for waste management of filters and contaminated water assure safe, efficient and reliable maintenance work within the Target Station? Proper Alara?

4. System 1010

5. Filter design data 10g contaminated particles per year
Based on the assumption that all possible oxygen in the He is used for oxide production on the tungsten surface and that all the oxide is released into the He.
1300 GBq
Shielding 10 cm lead
10g is conservative based the ETHEL experiments

6. CDR Design – Semi manual handling

7. CDR – Design remote handling

8. CDR committee comments
“shall be possible to replace the filter cartridges remotely, the committee doesn’t consider the shown concepts to be sufficiently mature”
“Options for filter extraction methodology need to be clearly defined, as it appears that this could significantly affect the design of hardware and handling systems”

9. Changed basic design idea
It is not possible to extract the filter insert from the filter unit without severe risk to contaminate the utility room.
Focus instead on simplified replacement of the complete filter unit.

10. Final filter design solution

11. Change of filter unit

12. Conclusions
The amount of radioactive debris is conservatively calculated and also verified in lab test (ETHEL)
The radiation level from the filter will be monitored online
The final design is adjusted to radiation safe maintenance procedures
Extended waste but much simplified handling