Thermal Analysis of a H1616 Shipping Container - prod.sandia.gov ...

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Temperature (F) 2000 1800 1600 1400 1200 1000 800 600 400 200 0 0 20 40 60 80 100 120 140 160 180 200 Time (min) Shroud Temperature (ISSIM3) Flange Temperature (ISSIM3) Shroud Temperature (C9SIM) Flange Temperature (C9SIM) Figure 33. Temperature Histories for Simulated Thermal Tests (C9SIM vs. ISSIM3). Temperature (F) 500 450 400 350 300 250 200 150 100 0 100 200 300 400 500 600 700 800 900 1000 Time (min) Flange Temperature (ISSIM3) Flange Temperature (C9SIM) Figure 34. Flange Temperatures for Simulated Thermal Tests (C9SIM vs. ISSIM3). 40
Temperature (F) 60 40 20 0 -20 -40 -60 -80 -100 -120 -140 0 20 40 60 80 100 120 140 160 180 200 Time (min) Shroud Temperature Difference Flange Temperature Difference Figure 35. Temperature Differences for Simulated Thermal Tests (C9SIM vs. ISSIM3). 5 Conclusions The goal of this analysis has been to show that the experimental thermal tests conducted for the certification of the H1616 shipping container provide a conservatively high estimate of the maximum flange temperature, a key measure of the thermal response of the shipping container. During the thermal tests, dangers associated with the handing of radioactive material that normally would be prevalent in actual accident conditions were eliminated by simulating the effects of heat generation by pre-heating empty shipping containers to temperatures greater than those expected when using filled containers. Federal regulations also require cooling in a 100 ◦ F environment under a cyclic solar radiation load. In the actual thermal tests performed for certification, the cooling temperature was close to 40 ◦ F and no steps were taken to simulate solar insolation effects. In order to show compliance with the Federal regulations, a computational model was developed to simulate the thermal response of the C9 thermal test as performed and for a number of different scenarios that met or exceeded the conditions specified by the Federal regulations. A one-dimensional finite difference model of the shipping container was developed in cylindrical coordinates. The model assumes the container is axisymmetric and allows for variable thermal properties in the radial direction. The model parameters were calibrated using shroud and flange temperature data obtained from two experimental 41
Page 1 and 2: SAND REPORT SAND2002-8511 Unlimited
Page 3 and 4: SAND2002-8511 Unlimited Release Pri
Page 5 and 6: Contents 1 Introduction . . . . . .
Page 7 and 8: Thermal Analysis of a H1616 Shippin
Page 9 and 10: 2 Model Development and Validation
Page 11 and 12: Table 4. Thermal Properties of the
Page 13 and 14: 3 Model Calibration In order to ens
Page 15 and 16: Temperature (F) 1600 1400 1200 1000
Page 17 and 18: shown in Figure 5 using the paramet
Page 19 and 20: Table 7. Final Model Parameters det
Page 21 and 22: 4 Analysis and Results Once the mod
Page 23 and 24: Temperature (F) 180 170 160 150 140
Page 25 and 26: Temperature (F) 60 50 40 30 20 10 0
Page 27 and 28: Temperature (F) 180 170 160 150 140
Page 39: Table 9. Description and Results of
Page 43 and 44: attributed to the fact that solar i
Page 45 and 46: References [1] General Plastics Mfg
Page 47 and 48: 1 MS 9401 J.M. Hruby, 8702 1 MS 904

Thermal Analysis of a H1616 Shipping Container - prod.sandia.gov ...

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