ML22103A068

NRC Staff Follow Up Questions Related to the Shielding Evaluation for Revision 10 of the Certificate of Compliance for the Model No. Halfpact Package

ML22103A068
Person / Time
Site:	07109218, 07109279
Issue date:	12/09/2021
From:	Stephen Burns Nuclear Waste Partnership
To:	Garcia-Santos N Storage and Transportation Licensing Branch
Garcia-Santos N
Shared Package
ML22103A064	List: ML22103A068 ML22103A069 ML22103A070
References
EPID L-2021-LLA-0033, EPID L-2021-LLA-0034
Download: ML22103A068 (1)

Text

TRUPACT-II and HalfPACT Review: Follow up Questions Date: 12/8/2021

1. Update the following information in TRUPACT-II SAR tables 5.4-12, 5.4-13 and 5.4-15 based upon the results of SCA-CAL-0005 (ADAMS Accession No. ML21279A188) to demonstrate compliance with the applicable regulatory limits in 10 CFR Part 71:

a. calculated dose rate (mrem/hr)

b. tally error

c. allowable activity (par/s) and

d. allowable activity (Ci)

2. Update the following information in TRUPACT-II SAR tables 5.5-16, 5.5-18 and 5.5-22 based upon the results of SCA-CAL-0005 (ADAMS Accession No. ML21279A188) to demonstrate compliance with the applicable regulatory limits in 10 CFR Part 71:

a. calculated dose rate (mrem/hr)

b. tally error and

c. allowable activity (/s)

3. Is the gamma scan performed on an assembled container or only on individual components?

4. Explain how the gamma scan will be used to measure the thickness of the lead shield in the corners of the shielded container. If the gamma scan is not used, explain how you ensure that the thickness of the lead in the corners of the shielded container are within the values shown in the licensing drawings.

5. Provide the maximum amount of the proposed content that can be shipped a single shielded container and per shipment considering the applicable regulatory limits in 10 CFR Part 71. Also, provide the calculation a as part of your response.

6. During the phone call last week, the applicant mentioned that they performed a calculation assuming a 1/2 -in. gap of the lead shield. Using the 1/2 -in. gap of the lead shield, provide the allowable activity calculation using the applicable 10 CFR Part 71 dose\dose rate limit.