Pre-Application MeetingSeptember 30, 2014

- Chapter 5 revision- Other minor correctionsOther minor corrections

Rerun MCNP with updated weight windowsResolve convergence issues◦ Resolve convergence issues

Revise model to remove “self-shielding” of resin Address consistency of Lead Slump calculations Address consistency of Lead Slump calculations

between Chapter 2 and 5◦ Original value chosen for use in shielding analysis without

knowledge of end drop and fire analysis resultsknowledge of end drop and fire analysis results Remove neutron emitter calculation◦ SAR and SER language should matchg g

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New WW FileOLD WW FileFile: rpsnGenericm

nps ~1E+09

Run time 17 hours

Tally Score 1.520E-04

fsd 0 0053

nps ~2E+07

Run time 3 minutes

Tally Score 1.514E-04

fsd 0 0130

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fsd 0.0053 fsd 0.0130

OLD Weight Window File

New Weight Window File

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Remove Resin Material from MCNP models◦ MCNP Model assumes void throughout cavity◦ MCNP Model assumes void throughout cavity Removes correction factors (material, density, cab)

◦ “Problem Isotopes” may be modeled explicitly with resin material included Potential “Problem Isotopes”-

IsotopePerformance Criteria

(RTL-001-CALC-SH-0101)Max Ci Limit

(in current SAR)Ratio

Co-60 607.00 732.25 1.21Zn-65 251.00 1,486.67 5.92Ag-110M 46.20 622.61 13.48Fe-59 51.80 763.21 14.73Cs-134 229.00 3,877.35 16.93Co-58 467.00 10,738.12 22.99M 54 422 00 16 373 56 38 80

Co-60 is already modeled explicitly All other Isotopes have a Ratio>1E+03

Mn-54 422.00 16,373.56 38.80Cs-137 (Ba-137m) 349.00 27,114.11 77.69

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Section 1.2.1.7Remove the phrase:◦ Remove the phrase:“The lifting pocket retaining pins remain installed when the pockets are not in use. In this way the blocks are rendered inoperable when not in use so they cannot be inadvertentlyinoperable when not in use so they cannot be inadvertently used as cask tie-downs.”

◦ Replace with the phrase:“Wh t i f ki lifti th k t“When not in use for packing lifting, the pockets are rendered inoperable so they cannot be used as cask tie-downs.”

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Table 4.4.4-1 (and Table 7.5.1-7)Add a condition to the table to limit the waste content to◦ Add a condition to the table to limit the waste content to 130 ft³.

Section 4.4.5 (and Section 7.5.2)◦ Add the following restrictions:

Condition for Shipper to use the Detailed Analysis1 Waste consisting of resins and filters from commercial power plants2 Waste has been grossly dewatered3 Secondary containers are passively vented within the cask cavity during shipment.

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Section 7.4.2-7.4.4Replace the term “spreader beam” with “yoke”◦ Replace the term spreader beam with yoke .

Section 7.6.1◦ Update the loading table such that units are in p g

milliCuries/kg◦ Note the neutron limit of 3.5 milliCuries/kg

(3.5 x 10-6 Ci/g) described in the Certificate of Compliance.g◦ Note that Cf-252, Cf-254, and Cm-248 are included as

both gamma and neutron emitters.

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Test Personnel QualificationsRemove the requirement:◦ Remove the requirement:“Test personnel shall be ASNT NDT or COFREND Level II certified in leakage testing.”

◦ Replace with the requirement:◦ Replace with the requirement:“Test personnel shall be ASNT NDT or COFREND Level II certified in leakage testing, or trained to a program in accordance with the recommendation of ASNT SNT-TC-1A.”eco e dat o o S S C

Pre-Shipment Leakage Test Procedure◦ Separate this section to describe 2 test options:

G S 99 bl Gas-Pressure Drop → ANSI N14.5-1997, table A1, test A.5.1 Gas-Pressure Rise → ANSI N14.5-1997, table A1, test A.5.2

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Pre-Shipment Leakage Test ProcedureCorrect Step 12 of the test procedure◦ Correct Step 12 of the test procedure“Ensure that the pressure change is less than or equal to the pressure gauge resolution.”

◦ Remove references to “Ambient Temperature” and replace◦ Remove references to Ambient Temperature and replace with “Base Metal Temperature of Cask Lid” (ASME Section V, Article 10).

◦ Add a note in Step 8 allowing for vacuum conditioning of◦ Add a note in Step 8 allowing for vacuum conditioning of the O-ring seals.

◦ Add a step after disconnecting the vacuum pump:“Wait for the pressure to stabilize with an absolute pressure ofWait for the pressure to stabilize, with an absolute pressure of 30 ~ 90 mbar before starting the test.”

◦ Add a final step to replace the leak test port plug.

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Pre-Shipment Leakage Test Acceptance CriteriaThe SAR currently references formulas B 1 B 14 and B 17 of◦ The SAR currently references formulas B.1, B.14, and B.17 of Annex B of ANSI N14.5-1997.

◦ Formula B.17 is located in Section B.14, which states:“In accordance with 7 2 the sensitivity of the leakage testIn accordance with 7.2, the sensitivity of the leakage test procedure to be used shall be equal to or less than one-half the maximum permissible leakage rate for the tracer fluid.”

◦ Section 7 2 describes the “Design Leakage Rate Test” which◦ Section 7.2 describes the Design Leakage Rate Test which is only used “during design evaluation”.

◦ We believe Formula B.17 does not apply to the Pre-Shipment Leakage Test Incorporating it into our acceptance criteriaLeakage Test. Incorporating it into our acceptance criteria results in an additional margin of a factor of 2.

◦ The modified acceptance criteria is described on the following slides

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following slides.

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Calculation and SAR revision by end of November 20142014.

Pre application meeting around mid November to present the calculation results and changes in the gSAR.

Submittal by the end of December 2014.

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