1. He Plant, LN2 Systems and Commissioing
Güney Korkmaz
7th Machine Advisory Committee Meeting of TARLA
SEPTEMBER Ankara University

2. CONTENT Introduction TARLA’s scope He Plant comissioning plan
Warm piping
He Plant comissioning plan

3. He Plant : Layout & Piping
50 m3 He Buffer
Phase Seperator
500 L Dewar
Cold Box 2
Compressor Station
Vaporizer
Cold Box 1
Warm Vacuum Pumps
10 m3 LN2 Buffer
LN2 Vaporizer
Oil Removal System
Cooling Power at 1.8 K
210 W
Outlet temperature
1.8 – 2.1 K
Liquid He pressure stability
± 0.2 mbar
Flow rate of 1.8 K liquid He
0 – 10.7 g/s

4. He Plant : Basic P&ID

5. TARLA’s scope Infrastructure (done) UPS (done)
Unboxing and positioning (done)
Instrument Air (done)
Cooling Water (done)
He gas & LN2 purchase (done)
Signal and Electricity Cables (WIP)
Warm piping (WIP)

6. Issues with warm piping
Contract made in Dec. 2014
Late delivery (June 2015) of equipment
Poor welding quality
Equipment cleanliness issues

7. Warm Piping Acceptance tests Radiographic inspection of weldings
To see penetration of weldings
Pressure test
15 bar
Helium Leak test
≤ 10-5 mbarl/s
Cleanliness inspection

8. CB 2 & Test Module : Basic P&ID

9. Tests of Helium Plant Commissioning will finish in Jan. 2016
Cooldown mode (300 K to 4.5 K)
Stand-by mode (4.5 K)
Operation mode (1.8 K – 2.1 K)
Warm up mode (1.8 K to 300 K)
Acceptance criteria ±0.2 mbar pressure stability and temperature between 1.8 – 2.1 K for 2 hours

10. Conclusion Cabling and warm piping will be completed in Sep. 2015
Tests of warm piping will be completed in Oct. 2015
If the tests are succesful we will be ready for final stage of comissioning

11. Thank You