ML25191A061
| ML25191A061 | |
| Person / Time | |
|---|---|
| Site: | 07109388 |
| Issue date: | 07/10/2025 |
| From: | Fels S Orano NCS GmbH |
| To: | Office of Nuclear Material Safety and Safeguards |
| Shared Package | |
| ML25191A055 | List: |
| References | |
| EPID L-2020-NEW-0003 0045-PA-2021-001, Rev 1 | |
| Download: ML25191A061 (1) | |
Text
Prepared Checked Released S. Fels W. Apel M. Hennebach 13.02.2025 14.02.2025 14.02.2025 1 / 7 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH Test Instruction Periodic Inspections of 30B-X Cylinders 0045-PA-2021-001-Rev1 Docusign Envelope ID: B899D5A3-FED7-4960-BB69-C7FD634302A4
0045-PA-2021-001-Rev1 2 / 7 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH Table of Contents List of Revisions 3
1 Scope, Objective and Responsibilities 4
2 Applicable Documents and Regulations 4
3 Description of the 30B-X cylinder 4
4 Qualification of Personnel 5
5 Radiation Protection Clearance 5
6 In-Service Inspections and Tests 5
6.1 Routine Operational Inspections...................................................................................... 5 6.2 Periodic Inspections and Tests........................................................................................ 5 7
Equipment for Inspections 6
8 Inspection Performance, Evaluation, and Assessment of Results 6
8.1 Visual Inspections........................................................................................................... 6 8.2 Dimensional Checks........................................................................................................ 6 9
Non-conformances and Deviations 7
10 Documentation 7
Literature 7
Appendix 1 Acceptable and Unacceptable Damage to 30B-X Cylinders 8
Appendix 2 Criteria for Degree of Corrosion for the 30B-X Cylinder 9
Docusign Envelope ID: B899D5A3-FED7-4960-BB69-C7FD634302A4
0045-PA-2021-001-Rev1 3 / 7 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH List of Revisions Revision Date of revision Modifications 0
28.06.2021 Original 1
14.02.2025
- Inclusion of the latest revisions of referenced documents, which affects section references related to ANSI N14.1
- Revision of section 5 to avoid misinterpretations regarding health physics clearance Docusign Envelope ID: B899D5A3-FED7-4960-BB69-C7FD634302A4
0045-PA-2021-001-Rev1 4 / 7 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH 1 Scope, Objective and Responsibilities These instructions describe the type and scope of the in-service inspections and tests of the 30B-X cylinder as required by [ANSI N14.1] or [ISO 7195], as well as the required additional tests for the internal CCS of the 30B-X cylinder. The in-service inspections and tests consist of:
- Routine operational inspections of the 30B-X cylinder when received and prior to sampling, withdrawal, filling, or shipping to ensure that it remains in a safe, usable condition.
- Five-year periodic inspections and tests for recertification of the 30B-X cylinder.
The user of the 30B-X cylinder is responsible for carrying out the in-service inspections and tests.
2 Applicable Documents and Regulations Handling instructions
[0045-HA-2021-001]
Use and handling of the DN30-X package Specification
[0045-SPZ-2021-001]
Specification of the 30B-X cylinder
[ANSI N14.1]
Uranium Hexafluoride - Packaging for Transport
[ANSI N14.5]
Radioactive Materials - Leakage Tests on Packages for Shipment
[ASNT SNT-TC-1A] Personnel Qualification and Certification in Nondestructive Testing
[ISO 7195]
Nuclear Energy - Packagings for the transport of uranium hexafluoride (UF6)
[DIN EN ISO 9712] Non-destructive testing - Qualification and certification of NDT personnel The standards, regulations, and rules mentioned in this document must be applied in their currently valid revision.
The user is informed in writing by the owner of the package approval when a new revision of this test instruction is available.
3 Description of the 30B-X cylinder The main components of the 30B-X cylinder are:
- The cylinder shell with an ellipsoidal head on each end
- The valve and plug half couplings
- The cylinder valve and plug
- The interior criticality control system (CCS) consisting of criticality control rods (CCRs) containing neutron absorbing material in the form of boron carbide (B4C), three lattice holders, and longitudinal stiffeners that keep the CCRs in position. Two CCR restraints each consisting of a backing bar and a rotation preventing device that maintain the positioning of the CCS within the 30B-X cylinder cavity.
Docusign Envelope ID: B899D5A3-FED7-4960-BB69-C7FD634302A4
0045-PA-2021-001-Rev1 5 / 7 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH 4 Qualification of Personnel The personnel responsible for the in-service inspections and tests of the 30B-X cylinder must be familiar with this test instruction.
The responsible person for supervising the in-service inspections and tests of the 30B-X cylinder must be appointed by the management of the user and has to be independent from operations.
In compliance with [ANSI N14.1], all nondestructive examination (NDE) personnel shall be certified in accordance with [ASNT SNT-TC-1A] or [DIN EN ISO 9712], or other equivalent standards, and inspections shall be carried out using Code1-compliant procedures.
5 Radiation Protection Clearance Radiation protection clearance of the 30B-X cylinder that is to be inspected has to be available before the in-service inspections and tests of that 30B-X cylinder begin.
6 In-Service Inspections and Tests 6.1 Routine Operational Inspections Routine operational inspections of 30B-X cylinders shall be performed as specified in
[ANSI N14.1], section 5.3.3 and at least as described in [USEC-651] (or in equivalent plant specific instructions). In addition to [ANSI N14.1], section 5.3.3 the following applies to the 30B-X cylinder:
- Conditions of the 30B-X cylinder that might indicate excessive damage of the CCS, such as severe outer damages of the cylinder shell or skirts, should be referred to a qualified inspector. Reuse of such cylinders is only allowed after internal inspection of such cylinders and proof that the CCS is undamaged.
Details on the routine operational inspections of 30B-X cylinders are also provided in handling instruction [0045-HA-2021-001].
6.2 Periodic Inspections and Tests Five-year periodic inspections and tests of 30B-X cylinders shall be performed as specified in
[ANSI N14.1], section 5.3.4.2 and at least as described in [USEC-651] (or in equivalent plant specific instructions). In addition to [ANSI N14.1], section 5.3.4.2 the following applies to the 30B-X cylinder:
- An internal and external examination of the 30B-X cylinder has to be performed by a qualified inspector, including a visual inspection of the internal CCS as far as accessible.
- Deviating from [ANSI N14.1], Table 3, a 30B-X cylinder shall no longer be used in UF6 service when the shell thickness has decreased below 11 mm.
1 Code or the Code Section VIII, Division 1 of the ASME Boiler and Pressure Vessel Code.
Docusign Envelope ID: B899D5A3-FED7-4960-BB69-C7FD634302A4
0045-PA-2021-001-Rev1 6 / 7 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH 7 Equipment for Inspections The equipment used for dimensional checks and weight checks has to be calibrated. The calibration certificates have to be valid. For the tare weight re-establishment of the 30B-X cylinder that is required at each five-year periodic inspection described in section 6.2, a suitable weighing device designed for at least 1700 kg [3750 lb] has to be used. In addition, the uncertainty of the weighing device has to be less than +/- 0.1 %.
During in-service inspections and tests, the inspected area has to be sufficiently illuminated, either through daylight or through artificial light of at least 500 Lux (this is the equivalent illumination 1 m away from an 80 W fluorescent lamp). Disturbing light effects such as reflections have to be avoided.
For visual inspection of the internal CCS of the 30B-X cylinder, video-endoscopy equipment has to be used that has been tested and maintained according to the manufacturer's specifications. The tester must be trained on the use of this device.
8 Inspection Performance, Evaluation, and Assessment of Results 8.1 Visual Inspections The internal and external examination of the 30B-X cylinder by a qualified inspector is carried out on various components of the 30B-X cylinder:
- Inner and outer surface of the 30B-X cylinder as far as accessible
- Internal CCS including the CCRs as far as accessible The visual inspection is carried out with respect to the following aspects:
- Presence or absence of parts
- Cleanliness
- Surface condition
- Irregularities, damages, and deformations
- Corrosion
- Integrity The criteria and requirements for the degree of corrosion of the 30B-X cylinder are provided in Appendix 2. Furthermore, dimensional checks may be necessary if objections are raised from visual inspections.
8.2 Dimensional Checks Dimensional checks are only necessary if objections are raised from visual inspections during routine operational inspections described in section 6.1 or periodic inspections described in section 6.2.
Dimensional checks are carried out by means of adequate measuring devices. The criteria and requirements for dimensional checks of the 30B-X cylinder are provided in Appendix 1.
Docusign Envelope ID: B899D5A3-FED7-4960-BB69-C7FD634302A4
0045-PA-2021-001-Rev1 7 / 7 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH 9 Non-conformances and Deviations The repair of 30B-X cylinders has to be performed in accordance with [ANSI N14.1], section 5.3.5 and specification [0045-SPZ-2021-001].
10 Documentation The performance and results of the five-year inspections must be recorded in written protocols.
Literature
[0045-HA-2021-001]
0045-HA-2021-001, Use and Handling of the DN30-X Package, Rev. 2, Orano NCS GmbH, February 2025
[0045-SPZ-2021-001]
0045-SPZ-2021-001, Specification of the 30B-X cylinder, Rev. 3, Orano NCS GmbH, February 2025
[ASNT SNT-TC-1A]
Personnel Qualification and Certification in Nondestructive Testing, 2024 Edition, 2024
[ANSI N14.1]
ANSI N14.1-2023, Uranium Hexafluoride - Packaging for Transport
[ANSI N14.5]
ANSI N14.5-2022, Radioactive Materials - Leakage Tests on Packages for Shipment
[DIN EN ISO 9712]
DIN EN ISO 9712:2022-09, Non-destructive testing - Qualification and certification of NDT personnel
[ISO 7195]
ISO 7195:2020-11, Nuclear Energy - Packagings for the transport of uranium hexafluoride (UF6), Third edition
[USEC-651]
USEC-651, The UF6 Manual - Good Handling Practices for Uranium Hexafluoride, Rev. 10, Centrus Energy Corp., 2017 Docusign Envelope ID: B899D5A3-FED7-4960-BB69-C7FD634302A4
0045-PA-2021-001-Rev1 1 / 1 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH Appendix 1 Acceptable and Unacceptable Damage to 30B-X Cylinders Check for:
Explanation 1
Pressure-envelope (shell or heads) curved dents Acceptable: any shallow/gentle curved dent in the cylinder shell that has a depth to diameter ratio of less than 1/12, providing the depth is less than 12.7 mm. Any cut, dent or gouge in the cylinder shell that is less than 2.54 mm in depth.
2 Cracks in the pressure envelope Unacceptable: visible cracks 3
Pressure-envelope bulges Unacceptable: visible bulges 4
Pressure-envelope dents Unacceptable: sharp dents 5
Pressure-envelope gouges, cuts or dents Unacceptable: any gouge, cut or dent with a depth greater than 12.7 mm or a depth to diameter ratio greater than 1/12, if the depth is between 2.54 mm and 12.7 mm.
6 Pressure-envelope gouges, cuts or dents Unacceptable: any gouge, cut or dent with a depth such that the wall thickness is less than 11 mm and a noticeable loss of metal.
7 Skirt torn from head with removal of metal from head Docusign Envelope ID: B899D5A3-FED7-4960-BB69-C7FD634302A4
0045-PA-2021-001-Rev1 1 / 1 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH Appendix 2 Criteria for Degree of Corrosion for the 30B-X Cylinder Condition Classification Further action 1
Acceptable 2
Acceptable 3
Acceptable Measurement of wall thickness in the corroded areas and further investigation if required.
4 Acceptable Measurement of wall thickness and further investigation if required.
5 Not acceptable Refurbishing required.
Docusign Envelope ID: B899D5A3-FED7-4960-BB69-C7FD634302A4