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Barrel TRT Straw Leak Test. K. McFarlane Hampton University DOE/NSF Review, BNL March 2001. Straw Leak Test Status. Running now with 2-straw partially automated system Can reliably get 125 straws/day (target) New 4-straw system is under construction (in use April 2001)

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barrel trt straw leak test

Barrel TRT Straw Leak Test

K. McFarlane

Hampton University

DOE/NSF Review, BNL March 2001

straw leak test status
Straw Leak Test Status
  • Running now with 2-straw partially automated system
  • Can reliably get 125 straws/day (target)
  • New 4-straw system is under construction (in use April 2001)
  • Automation of additional steps is being developed
  • Basic leak test technology is unchanged.

K. McFarlane

BNL, 20-Mar to 22-Mar, 2001

leak test station
Leak Test Station

K. McFarlane

BNL, 20-Mar to 22-Mar, 2001

leak test head
Leak Test ‘Head’

K. McFarlane

BNL, 20-Mar to 22-Mar, 2001

straw leak test criterion
Straw Leak Test Criterion
  • Straw is re-tested if leak rate exceeds 0.020” water in 20 s (0.7 mbar/bar/min; cf. TDR specification of 0.1 mbar/bar/min)
  • Straw that fails three times is rejected.
  • Typical re-test results are: 0.004, 0.001, 0.010, 0.002”.
  • Leak rate is usually a function of our machine. We do not plan to change.

K. McFarlane

BNL, 20-Mar to 22-Mar, 2001

leak test partial automation
Leak Test Partial Automation

Partial automation – BridgeView front panel

K. McFarlane

BNL, 20-Mar to 22-Mar, 2001

database entry
Database Entry

K. McFarlane

BNL, 20-Mar to 22-Mar, 2001

new leak test head
New Leak Test ‘Head’

K. McFarlane

BNL, 20-Mar to 22-Mar, 2001

conclusions
Conclusions
  • Leak check criterion is satisfactory; upgrade of equipment will proceed on the basis that existing basic method works
  • Production rate now adequate; expected to increase, releasing technician time for other work.

K. McFarlane

BNL, 20-Mar to 22-Mar, 2001