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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 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) • 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 K. McFarlane BNL, 20-Mar to 22-Mar, 2001
Leak Test ‘Head’ K. McFarlane BNL, 20-Mar to 22-Mar, 2001
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 Partial automation – BridgeView front panel K. McFarlane BNL, 20-Mar to 22-Mar, 2001
Database Entry K. McFarlane BNL, 20-Mar to 22-Mar, 2001
New Leak Test ‘Head’ K. McFarlane BNL, 20-Mar to 22-Mar, 2001
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