ML19114A324
| ML19114A324 | |
| Person / Time | |
|---|---|
| Site: | 07103052 |
| Issue date: | 03/05/2019 |
| From: | Azzaoui S TN Americas LLC, Orano USA |
| To: | Division of Spent Fuel Management |
| Shared Package | |
| ML19115A128 | List:
|
| References | |
| DOS-18-011415-044-NPV, V1.0 | |
| Download: ML19114A324 (8) | |
Text
NON PROPRIETARY VERSION Form: PM04-4-MO-6 rev.02 Orano TN SAFETY ANALYSIS REPORT N O N P RO P R I ET AR Y V E R S I ON CHAPTER 3A - APPENDIX 15 Prepared by / signature Date TN-MTR S. AZZAOUI Identification:
DOS-18-011415-044-NPV Version:
1.0 Page 1 / 8 TN International CONTAINMENT OF THE PACKAGE CONTENT FORMED BY THE TN-MTR CASK LOADED WITH GISETE CONTENT Table of Contents Revisions / versions history 2
SUMMARY
3
- 1. INTRODUCTION 4
- 2. Temperatures used 4
- 3. Activity release 4
- 4. CONCLUSIONS 4
- 5. REFERENCES 5
LIST OF TABLES 6
Form: PM04-4-MO-6 rev.02 N O N P RO P R I ET AR Y V E R S I ON Orano TN Identification:
DOS-18-011415-044-NPV Version:
1.0 Page 2 of 8 NON PROPRIETARY VERSION Revisions / versions history Rev. or Version Date Purpose and record of changes Prepared by / Checked by 00 See 1st page First issue S. AZZAOUI/ T. WILLEMS
Form: PM04-4-MO-6 rev.02 N O N P RO P R I ET AR Y V E R S I ON Orano TN Identification:
DOS-18-011415-044-NPV Version:
1.0 Page 3 of 8 NON PROPRIETARY VERSION
SUMMARY
This chapter presents the analysis of activity release from the package formed by the TN-MTR cask loaded with gisete content. This analysis is based upon the method detailed in Chapter 3A.
This chapter studies, in particular:
the maximum internal pressure within the enclosure for both Normal Conditions of Transport &
Accident Conditions of Transport; the maximum activity likely to be released in NCT & ACT.
This chapter considers the gisete radioactive content as described in Chapter 3A.
The results of analyses in this chapter are as follows:
- The maximum normal operating pressure is equal to 1.68 bar.
- the maximum pressure inside the cavity is 1.82 bars under Accident Conditions of Transport, which has no influence on the enclosure (< 7 bars).
- the maximum activity release rate is 2.69.107 A2 / hour in Normal Conditions of Transport, and 5.99.103A2 / week in Accident Conditions of Transport.
The regulatory criteria for internal pressure (MNOP & the strength of the enclosure) for the cask and the activity rates are respected.
Form: PM04-4-MO-6 rev.02 N O N P RO P R I ET AR Y V E R S I ON Orano TN Identification:
DOS-18-011415-044-NPV Version:
1.0 Page 4 of 8 NON PROPRIETARY VERSION
- 1. INTRODUCTION This chapter presents the analysis of activity release from the package formed by the TN-MTR cask loaded with gisete content (see Chapter 0A-14).
The calculations for evaluating the activity release are based on the method described in Chapter 3A.
- 2. Temperatures used The cavity gas temperatures are taken from heat transfer chapter 2A. The relevant temperature values for the calculation are as follows:
NCT ACT Cavity gas temperature
°C K
- 3. Activity release The cavity filling gas is air.
According to the characteristics of the gisete contents radioactive material presented in Chapter 0A-14, the only relevant isotope for the release analysis is 90Sr.
The approach described in Chapter 3A is applied to calculate the total activity release. Table 3A-15.1 gives the input data and data calculated by applying this approach, for both NCT & ACT.
The maximum internal pressures, after one year under NCT followed by one week of ACT, are respectively equal to 1.68 and 1.82 bar. These pressure levels are lower than 7 bars and therefore meet the pressure criteria.
The following table summarises the results of the releases for the gisete content loaded in the TN-MTR cask:
Activity release NCT (A2 / hour)
ACT (A2/week)
In an aerosol form 2.69.107 5.99.103 Total Regulatory criterion 1.10-6 1
The release of activity in NCT and ACT meets the regulatory criteria (<1>).
- 4. CONCLUSIONS The activity released from the package formed by the TN-MTR cask loaded with gisete content is calculated using the method defined in Chapter 3A. For this content, the cavity is filled with air.
The maximum pressure within the TN-MTR enclosure loaded with gisete content, is equal to:
1.68 bars in NCT, which is lower than the regulatory Maximum Normal Operating Pressure (7 bars)<1>.
1.82 bars in ACT; this pressure is lower than the maximum 7 bars which is authorised for the enclosure (See Chapters 1 & 1-10).
Form: PM04-4-MO-6 rev.02 N O N P RO P R I ET AR Y V E R S I ON Orano TN Identification:
DOS-18-011415-044-NPV Version:
1.0 Page 5 of 8 NON PROPRIETARY VERSION The calculated maximum activity release rate reaches 2.69.107 A2 / hour in Normal Conditions of Transport, and 5.99.103 A2 / week in Accident Conditions of Transport. The regulatory criteria (<1>)
are met.
- 5. REFERENCES
<1> Applicable IAEA regulation: see chapter 00
Form: PM04-4-MO-6 rev.02 N O N P RO P R I ET AR Y V E R S I ON Orano TN Identification:
DOS-18-011415-044-NPV Version:
1.0 Page 6 of 8 NON PROPRIETARY VERSION LIST OF TABLES Table Number Title Number of pages 3A-15.1 Parameters and results from the analysis of the containment of the gisete content loaded in the TN-MTR cask.
2
Form: PM04-4-MO-6 rev.02 N O N P RO P R I ET AR Y V E R S I ON Orano TN Identification:
DOS-18-011415-044-NPV Version:
1.0 Page 7 of 8 NON PROPRIETARY VERSION TABLE 3A-15.1 (1/2)
PARAMETERS AND RESULTS FROM THE ANALYSIS OF THE CONTAINMENT OF THE GISETE CONTENT LOADED IN THE TN-MTR CASK.
Normal conditions of transport Notation Parameters Unit Values 0
Internal pressure on closure Pa 1,04.105 SLR temperature upon closure K
298 Temperature of the cavity gases in NCT K
0 Pressure resulting from temperature rise Pa 1,68.105 SLR leakage rate guaranteed prior to transport Pa.m3.s-1 4,70.104 D
Equivalent capillary leakage diameter m
2,63.105 a
Capillary Leakage length m
7,80.103 Maximum external pressure Pa 1,04.105 Molar mass of the air kg.mol-1 0.029 Viscosity of air at temperature Tg Pa.s 2,64.105 Maximum normal operating pressure Pa 1,68.105 Minimum atmospheric pressure Pa 6,00.104 Leakage rate in normal conditions of transport Pa.m3.s-1 7,46.104
é Activity of aerosols A2 / g aerosol 1,7.101 Activity flow of aerosols in NCT A2/hour 2,69.107 Total release under NCT A2/hour Regulatory criterion during NCT A2/hour
- 1. 106 Safety coefficient 3.7
Form: PM04-4-MO-6 rev.02 N O N P RO P R I ET AR Y V E R S I ON Orano TN Identification:
DOS-18-011415-044-NPV Version:
1.0 Page 8 of 8 NON PROPRIETARY VERSION TABLE 3A-15.1 (2/2)
PARAMETERS AND RESULTS FROM THE ANALYSIS OF THE CONTAINMENT OF THE GISETE CONTENT LOADED IN THE TN-MTR CASK.
Accident conditions of transport Notation Parameters Unit Values Temperature of the cavity gases in ACT K
Internal pressure under ACT Pa 1,82.105
Viscosity of air at temperature T g' Pa.s 2,79.105 Leakage rate under ACT Pa.m3.s-1 8,46.104 Activity flow for aerosols under ACT A2/week 5,99.103 Total release under ACT A2/week Regulatory criterion during ACT A2/week 1
Safety coefficient 166