Page 1
Page 2
Page 3
Page 4
Page 5
Page 6
Page 7
Page 8
Page 9
Page 10
Page 11
Page 12
Page 13
Page 14
Page 15
Page 16
Page 17
Page 18
Page 19
Page 20
Page 21
Page 22
Page 23
Page 24
Page 25
Page 26
Page 27
Page 28
Page 29
Page 30
Page 31
Page 32
Page 33
Page 34
Page 35
Page 36
Page 37
Page 38
Page 39
Page 40
Page 41
Page 42
Page 43
Page 44
Page 45
Page 46
Page 47
Page 48
Page 49
Page 50
Page 51
Page 52
Page 53
Page 54
Page 55
Page 56
12 Dimensional Inspection A modeular dimensional inspection bench is used to measure diameterplate thickness irradia- tion induced swelling fuel rod growth and clad- ding creep down in-reactor service and creep out during dry storage. Length measurement of each rodlet can also be performed with the Remote Fuel Metrology System. Length measurement uncer- tainty of the system is 0.0025 cm 0.001 in.. A calibration check with a certified reference length standard is performed at the beginning of a series of measurements. The length standard is traceable to a National Institute for Standards and Technol- ogy NIST standard. The diameter profile measurement is also per- formed with the Remote Fuel Metrology System. The Remote Fuel Metrology System and Element Contact Profilometer ECP instruments measure the diameter profile by contact profilometry. The diameter measurement is made by two horizon- tally-opposed magnetic transducers connected to sapphire-tipped contact probes. Linear positions and displacements are derived from a digital- position readout system and are recorded on a data acquisition system. The diameter measurement uncertainty is 0.0005 cm 0.0002 in.. The diam- eter measurement accuracy is validated at the beginning of a series of measurements and at the beginning and ending of each shift of operation during an extended period of use. This calibration check is performed using two certified plug gauge reference standards that bound the lower and upper values of the measurements. The diameter standards are veri- fied traceable to a NIST standard. Remote fuel metrology unit for measure length and diameter.