1. April 2005 T. J. Hill / NSNFP Technical Lead Drop Testing Update - MCO and 24-Inch ISFP Test Canisters

2. Drop Test Efforts Two 24-Inch Idaho Spent Fuel Project (ISFP) test canisters (modified versions of the standardized DOE SNF canister design) dropped 30 feet: –45-degree impact (24MOD-45-1) –70-degree impact for slapdown (24MOD-70-2) Two MCO test canisters dropped using repository drop criteria from WASRD, Rev 4: –23-foot vertical drop (MCO-00-1) –2-foot 60-degree (worst orientation) drop (MCO-60-2)

3. MCO 23-ft Drop Test

4. Pressure Testing – Post Drop Two ISFP test canisters (24MOD-45-1 and 24MOD-70-2) –Held greater than 50 psig air steady for 1 hour Two MCO test canisters (MCO-00-1 and MCO-60-2) –Held greater than 50 psig air steady for 1 hour

5. Helium Leak Testing – Post Drop Two ISFP test canisters (24MOD-45-1 and 24MOD-70-2) –Helium leak tested less than 1x10 -7 std cc/sec (leaktight) Two MCO test canisters (MCO-00-1 and MCO-60-2) –MCO-00-1 not greater than 1x10 -5 std cc/sec (alternate test method due to prior internal helium contamination) –MCO-60-2 less than 1x10 -7 std cc/sec (leaktight)

6. MCO Internal Helium Contamination

7. ISFP Test Canister Deformations Good analysis matches to actual deformations and strains –Typically within 4% on deformations –Good matches with measured strains

8. ISFP Test Canister Deformations - cont. No internal sleeves were used Localized “bumps” in shell due to internals Analysis accurately predicted these deformations within 2%

9. MCO Test Canister Deformations - cont. Good analysis matches to very small actual deformations and strains

10. ISFP Test Canister Internals No significant damage to ISFP internals

11. MCO Test Canister Internals Component Original Dimension Post-Drop Dimension Model Predicted Dimension Center Post Length 29.278-in. 25-1/8-in. 25-5/16-in. Center Post Diameter 2.840-in. 3.047-in. 3.025-in. Only MCO-00-1 was cut open and only bottom basket was of interest Basket cuts are from canister cutting efforts

12. MCO Test Canister Contamination Radioactivity readily measured once top end of test MCO-00-1 cut off (tape applied after cutting open to prevent potential spread of contamination from holes) Disposed as low level waste at INL with less than 0.5 mr/hr reading

13. Conclusion NSNFP issued two reports –EDF-NSNF-045 for ISFPs –EDF-NSNF-047 for MCOs NSNFP has demonstrated these DOE SNF canisters will not breach during repository defined drop events