ML25191A059

Orano NCS Gmbh - Test Instruction, Contamination and Dose Rate Measurements at the DN30-X Package, 0045-PA-2021-002 Rev. 1

ML25191A059
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: ML25191A056 ML25191A058 ML25191A059 ML25191A060 ML25191A061
References
EPID L-2020-NEW-0003 0045-PA-2021-002, Rev 1
Download: ML25191A059 (1)

Text

Prepared Checked Released S. Fels Y. van Wijk M. Hennebach 29.01.2025 12.02.2025 17.02.2025 1 / 8 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH Test Instruction Contamination and Dose Rate Measurements at the DN30-X Package 0045-PA-2021-002 Rev. 1 Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

0045-PA-2021-002 Rev. 1 2 / 8 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH Table of Contents 1

Objective and Scope 3

2 Other Documents 3

3 Date of Inspection 3

4 Qualification of Personnel 3

5 Measuring Equipment 4

5.1 Contamination Measurement Equipment............................................................................... 4 5.2 Dose Rate Measurement Equipment..................................................................................... 4 6

Measuring Sequence 4

6.1 Determination of Contamination............................................................................................. 4 6.2 Determination of Dose Rates................................................................................................. 5 6.2.1 Measurement of Dose Rates at the DN30-X Package................................................ 5 6.2.2 Measurement of Dose Rates at the Vehicle Loaded with DN30-X Packages.............. 6 7

Admissible Limit Value 7

7.1 Non-Fixed Contamination...................................................................................................... 7 7.2 Dose Rate.............................................................................................................................. 7 8

Non-Conformances and Deviations 7

8.1 Contamination........................................................................................................................ 7 8.2 Dose Rate.............................................................................................................................. 7 9

Documentation 7

Attachments 8

List of Revisions Revision Date of revision Modifications 0

28.06.2021 Original 1

17.02.2025

• Change layout to Orano corporate design

• Replacement of the term health physics with radiation protection to avoid possible misinterpretations

• Addition of references to 10 CFR 71 and 49 CFR 173 in section 6.1

• Improvement of wording in sections 6.2.2.1 and 6.2.2.2

• Removal of duplicate information

• Combination of separate dose rate measurement protocols for different numbers of packages into a single protocol Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

0045-PA-2021-002 Rev. 1 3 / 8 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH 1 Objective and Scope The objective of this test instruction is to specify the conditions for the contamination and dose rate measurements at DN30-X packages with UF6 contents of grade HALEU before transport. This also includes the measurement of the non-fixed contamination at the outer surface of the DN30-X pack-age. This test instruction ensures that the package meets the following regulations for the transport of radioactive material in the version valid at the time of transport:

Regulations for the Safe Transport of Radioactive Material (IAEA SSR-6),

European Agreement concerning the International Carriage of Dangerous Goods by road (ADR),

European Agreement concerning the International Carriage of Dangerous Goods by Inland Waterways (ADN)

European Agreement concerning the International Carriage of Dangerous Goods by Rail (RID)

International Maritime Dangerous Goods Code (IMDG-Code) 2 Other Documents The primary document to this test instruction is:

Handling instruction 0045-HA-2021-001 - Use and handling of the DN30-X package 3 Date of Inspection The measurements are performed on the loaded DN30-X package in accordance with the primary document.

4 Qualification of Personnel Personnel will be appointed by the radiation protection department of the site where the DN30-X packages are handled, in accordance with their operating authorization and the radiation protection instructions. Personnel must be familiar with the test instruction.

Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

0045-PA-2021-002 Rev. 1 4 / 8 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH 5 Measuring Equipment 5.1 Contamination Measurement Equipment Contamination measuring instruments must be adequate for performing the measurements. They must be calibrated with adequate test radiation sources, such as Am-241 for -emitters and Cs-137 or Sr/Y-90 for emitters. Calibration must be carried out according to DIN ISO 7503-3 or an equiv-alent international standard.

Other test radiation sources are acceptable if such test radiation sources are generally used at the site of dispatch and if they are calibrated according to DIN ISO 7503-3 or an equivalent international standard.

The measuring instrument and the measurement method used must be appropriate to measure non-fixed contamination with the following minimal values:

and -emitters as well as low toxicity -emitters 0.4 Bq/cm2 All other -emitters 0.04 Bq/cm2 The used measuring instruments and their characteristic data are to be recorded in the attached measuring instrument protocol B.1.

5.2 Dose Rate Measurement Equipment Dose rate measuring instruments must be adequate for performing the measurements, taking into account the type of radiation and the energy spectrum. The instruments must permit the detection of a minimum dose rate of 0.5 µSv/h. Measuring instruments for Gamma dose rates must be cali-brated.

The used measuring instruments and their characteristic data are to be recorded in the attached measuring instrument protocol B.2.

6 Measuring Sequence 6.1 Determination of Contamination Non-fixed contamination shall be determined by means of a wipe test according to DIN ISO 7503-2 or an equivalent international standard, taking into account ADR No. 4.1.9.1.2, IAEA SSR-6 para. 508, or 10 CFR §71.87(i) and 49 CFR §173.443.

Wipe test samples shall be carried out at least in those areas indicated in the attached measurement protocol C.1. Furthermore, wipe test samples have to be taken at all areas where contamination may occur because of loading and handling.

Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

0045-PA-2021-002 Rev. 1 5 / 8 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH As a rule, the following boundary conditions must be observed:

Requirements for wipe test Parameter Requirement Material for wipe test Dry, round filter paper Surface to be wiped 300 cm2 Removal factor 0.1 Efficiency of the wipe test for beta and gamma emitters 0.5 Efficiency of the wipe test for alpha emitters 0.25 The contamination level is determined using the following formula:

=

b i s where

= counting rate in s-1 b = background in s-1 i = response characteristics of the measuring instrument

= removal factor

= wiped surface in cm2 s = efficiency of the wipe test The measurement results shall be documented using the attached measurement protocol C.1.

The contamination measurement has to be performed before the dose rate measurement.

6.2 Determination of Dose Rates Transport of packages containing commercial grade UF6 with an enrichment of max. 5 % in U-235, either loaded or heels cylinders, has been carried out for decades in large numbers. The dose rates at the surface of such packages are on one hand well below the allowable dose rates and on the other hand the distribution of the dose rates is well known by experience.

The dose rates at the surfaces of packages containing a higher enrichment of U-235 are expected to be even lower as the concentration in U-238 is lower. The consideration of ALARA principles calls for the limitation of the number of measuring points for such packages to reduce the overall exposure of the radiation protection personnel.

The dose rate measurements shall be carried out after the contamination measurement.

6.2.1 Measurement of Dose Rates at the DN30-X Package The dose rates shall be measured and recorded at least at the indicated measurement points 1 to 5 in the attached measurement protocol D.1. The surface measuring point with the maximum dose rate shall be retained as a reference point to determine the dose rate at a distance of 1 m of the package. From experience with UF6 transport, the point of maximum dose rate at the surface is expected around measurement point 3; however, this has to be verified by the measurement.

Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

0045-PA-2021-002 Rev. 1 6 / 8 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH The measuring range shall be selected insofar that the display will be in the upper third, if possible.

Only gamma radiation is measured because of negligible neutron radiation. Background radiation at the point of measurement shall be subtracted from the measured result.

Neutron radiation is accounted for by multiplying the value of the maximum dose rate after subtract-ing the background radiation from the measured dose rate by a factor of 1.05.

In case the measurement of the gamma dose rate in 1 m distance (measurement point A1) is not possible because of geometrical constraints (i.e., the DN30-X package is mounted on a flatrack), the gamma dose rate at 1 m distance may be calculated by multiplying the maximum value at the surface with a factor of 0.25.

6.2.2 Measurement of Dose Rates at the Vehicle Loaded with DN30-X Packages 6.2.2.1 Vehicle Loaded with DN30-X Packages Oriented Laterally to the Direction of Travel In case the vehicle is loaded with DN30-X packages oriented laterally (i.e., sideways) to the direction of travel, the lateral surfaces of the vehicle match the front surfaces of the DN30-X packages. Subject to ALARA principles, the dose rates need not to be measured twice but can be transcribed from the records for the DN30-X packages themselves.

In any case, the dose rate at measurement points 5, 6, 7 and 8 shall be measured and recorded for the surfaces of the vehicle as shown in the attached measurement protocol D.2.

Measurements for points A1, A2, and A3 shall be taken at a distance of 2 m from the vehicle surface at the location of the maximum dose rate on both side and rear surfaces of the vehicle, respectively.

Generally, the measurement at 2 m distance at the front of the vehicle is not relevant, as the drivers cabin provides distance and shielding. Instead, measurement point C4 shall be measured and recorded.

6.2.2.2 Vehicle Loaded with DN30-X Packages Oriented Longitudinally to the Direction of Travel In case the vehicle is loaded with the DN30-X packages oriented longitudinally to (i.e., along with) the direction of travel, the surfaces of the vehicle do not match the surfaces of the DN30-X packages.

The dose rates shall be measured and recorded as indicated in the attached measurement proto-col D.3.

Measurements for points A1, A2, and A3 shall be taken at a distance of 2 m from the vehicle surface at the location of the maximum dose rate on both side and rear surfaces of the vehicle, respectively.

Generally, the measurement at 2 m distance at the front is not relevant, as the drivers cabin provides distance and shielding. Instead, measurement point C4 shall be measured and recorded.

Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

0045-PA-2021-002 Rev. 1 7 / 8 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH 7 Admissible Limit Value 7.1 Non-Fixed Contamination The following limit values for non-fixed contamination shall not be exceeded during the transport of the DN30-X package.

Non-Fixed External Radioactive Contamination Limits Contaminant Limit value in Bq/cm2 Beta and gamma emitters and low toxicity alpha emitters 2.0 All other alpha emitting radionuclides 2.0 7.2 Dose Rate The following limit values for dose rates (including neutron radiation contribution) shall not be ex-ceeded during the transport of the DN30-X package.

Radiation level limitations Measuring point Limit value in mSv/h Package surface 2.0 Exterior surfaces of vehicle 2.0 2 m distance from vehicle 0.1 8 Non-Conformances and Deviations If values exceeding the admissible limits are found during the check, the procedures given in sec-tions 8.1 and 8.2 shall be followed regarding contamination and dose rate, respectively.

8.1 Contamination If contamination values exceed the limits, the DN30-X package shall be decontaminated so that the limits are met.

8.2 Dose Rate DN30-X packages with dose rates exceeding the admissible limits must not be shipped outside the nuclear site.

9 Documentation Test results shall be documented on the attached forms A.1 to D.3, or in site specific forms and records that contain at least the information required by the attached forms A.1 to D.3.

The attached records B.1 to D.3 have to be signed by the examiner performing the measurements and the person responsible for radiation protection of the site.

The attached test protocol A.1 has to be signed by the person responsible for radiation protection of the consignor and the consignee.

Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

0045-PA-2021-002 Rev. 1 8 / 8 Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH Attachments Test Protocols DN30-X Test Protocol A.1: Contamination and Dose Rate Measurements (1 Page)

Measuring Instrument Protocols Measuring Instrument Protocol B.1: Contamination Measuring Instrument (1 Page)

Measuring Instrument Protocol B.2: Gamma Dose Rate Measuring Instrument (1 Page)

Measurement Protocols - Contamination DN30-X Measurement Protocol C.1: Measurement of Non-Fixed Contamination (1 Page)

Measurement Protocols - Dose Rates DN30-X Measurement Protocol D.1: Measurement of Dose Rates - UF6 Grade HALEU, Filled and Heels Cylinders (1 Page)

DN30-X Measurement Protocol D.2: Measurement of Dose Rates - Vehicle with 1 to 4 Packages in Lateral Direction (2 Pages)

DN30-X Measurement Protocol D.3: Measurement of Dose Rates - Vehicle with 1 to 2 Packages in Longitudinal Direction (2 Pages)

Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH DN30-X Test Protocol A.1 Contamination and Dose Rate Measurements Page 1/1 Protocol no.

Test instruction 0045-PA-2021-002 Consignor/consignee Plant Transport date Reference no.

DN30 PSP ID Cylinder ID 30B-X cylinder Filled Heels Use Exclusive Non-exclusive

1. Non fixed contamination Measurements protocol no.

Date Measurement areas Unit Limit Max. value Beta/Gamma-rays and Alpha-rays low toxicity Bq/cm2 4.0 All other Alpha-rays Bq/cm2 0.4

2. Dose rate Measurements protocol package no.

Date Measurements protocol vehicle no.

Date Measurement/calculation points Unit Limit Max. value Surface of package mSv/h 2

At 1 m distance from package (only if not under exclusive use) mSv/h 0.1 Vehicle surface mSv/h 2

At 2 m distance from vehicle mSv/h 0.1 Radiation protection Consignor Date Name Signature Date Name Signature Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH Measuring Instrument Protocol B.1 Contamination Measuring Instrument Page 1/1 Protocol no.

Test instruction 0045-PA-2021-002 Consignor/consignee Plant Transport date Reference no.

DN30 PSP ID Cylinder ID 30B-X cylinder Filled Heels Use Exclusive Non-exclusive General information Type Serial no.

Manufacturer Calibration source Nuclide Radiation type Designation Current activity N(t)

Activity on reference date N(0)

Measuring instrument data Responsiveness for alpha-radiation Responsiveness for beta-radiation Calibration date Comments Tester Radiation protection Date Name Signature Date Name Signature Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH Measuring Instrument Protocol B.2 Gamma Dose Rate Measuring Instrument Page 1/1 Protocol no.

Test instruction 0045-PA-2021-002 Consignor/consignee Plant Transport date Reference no.

DN30 PSP ID Cylinder ID 30B-X cylinder Filled Heels Use Exclusive Non-exclusive General information Type Serial no.

Manufacturer Official calibration Calibration certificate no.

Date Validity Measuring instrument data Dose measuring range in mSv/h Energy range in keV Tolerance in %

Comments Tester Radiation protection Date Name Signature Date Name Signature Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH DN30-X Measurement Protocol C.1 Measurement of Non-Fixed Contamination Page 1/1 Protocol no.

Test instruction 0045-PA-2021-002 Consignor/consignee Plant Transport date Reference no.

DN30 PSP ID Cylinder ID 30B-X cylinder Filled Heels Use Exclusive Non-exclusive General information Instrument serial no.

Last calibration date Wipe material dry wet Medium Responsiveness alpha-radiation beta-radiation Measurements Measuring area Beta and Gamma (max value)

Alpha (max value)

N s-1 N0 s-1 N-N0 s-1 Bq/cm2 N s-1 N0 s-1 N-N0 s-1 Bq/cm2 1 (a+b) 2 3

Measuring duration Tester Radiation protection Date Signature Date Name Signature Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH DN30-X Measurement Protocol D.1 Measurement of Dose Rates UF6 Grade HALEU, Filled and Heels Cylinders Page 1/1 Protocol no.

Test instruction 0045-PA-2021-002 Consignor/consignee Plant Transport date Reference no.

DN30 PSP ID Cylinder ID 30B-X cylinder Filled Heels Use Exclusive Non-exclusive General information Instrument serial no.

Last calibration date Measurements Unit: µSv/h Measured value (M)

Background radiation (B)

Dose rate (M-B)

Package surface Measurement points

< gamma >

1 2

3 4

5 max(1-5)

< gamma and neutron radiation >

DR(DN30-X) = max(1-5)

• 1.05 1 m distance from the package (radial)

DR(1m)

Determined by measurement Calculated: = DR(DN30-X)

• 0.25 Tester Radiation protection Date Name Signature Date Name Signature Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH DN30-X Measurement Protocol D.2 Measurement of Dose Rates Vehicle with 1 to 4 Packages in Lateral Direction Page 1/2 Protocol no.

Test instruction 0045-PA-2021-002 Consignor/consignee Plant Transport date Reference no.

DN30 PSP IDs Cylinder IDs 30B-X cylinders Filled Heels Use Exclusive Non-exclusive General information Vehicle no. plate Flatrack no.

Instrument serial no.

Last calibration date Measurements Unit: µSv/h Measured value (M)

Background radiation (B)

Dose rate (M-B)

Vehicle surface Transferred from the max. value from the protocols for packages 1-4 (marked in yellow)

< gamma >

[1]

[2]

[3]

[4]

Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH DN30-X Measurement Protocol D.2 Measurement of Dose Rates Vehicle with 1 to 4 Packages in Lateral Direction Page 2/2 Protocol no.

Test instruction 0045-PA-2021-002 Consignor/consignee Plant Transport date Reference no.

DN30 PSP IDs Cylinder IDs 30B-X cylinder Filled Heels Use Exclusive Non-exclusive Measurement points

< gamma >

5 6

7 8

max(1-8)

< gamma and neutron radiation >

DR(veh) = max(1-8)

• 1.05 2 m distance from the vehicle Measurement points

< gamma >

drivers cabin A1 A2 A3 C4 max(A1-A3, C4)

< gamma and neutron radiation >

DR(2m) = DR(veh)

• 1.05 Tester Radiation protection Date Name Signature Date Name Signature Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH DN30-X Measurement Protocol D.3 Measurement of Dose Rates Vehicle with 1 to 2 Packages in Longitudinal Direction Page 1/2 Protocol no.

Test instruction 0045-PA-2021-002 Consignor/consignee Plant Transport date Reference no.

DN30 PSP IDs Cylinder IDs 30B-X cylinders Filled Heels Use Exclusive Non-exclusive General information Vehicle no. plate Flatrack no.

Instrument serial no.

Last calibration date Measurements Unit: µSv/h Measured value (M)

Background radiation (B)

Dose rate (M-B)

Vehicle surface Measurement points

< gamma >

1 2

3 4

5 6

7 8

max(1-8)

Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2

Geistiges Eigentum der Orano NCS GmbH Property of Orano NCS GmbH DN30-X Measurement Protocol D.3 Measurement of Dose Rates Vehicle with 1 to 2 Packages in Longitudinal Direction Page 2/2 Protocol no.

Test instruction 0045-PA-2021-002 Consignor/consignee Plant Transport date Reference no.

DN30 PSP IDs Cylinder IDs 30B-X cylinders Filled Heels Use Exclusive Non-exclusive

< gamma and neutron radiation >

DR(veh) = max(1-8)

• 1.05 2 m distance from the vehicle Measurement points

< gamma >

drivers cabin A1 A2 A3 C4 max(A1-A3, C4)

< gamma and neutron radiation >

DR(2m) = DR(veh)

• 1.05 Tester Radiation protection Date Name Signature Date Name Signature Docusign Envelope ID: B4A5EEF0-66A8-425B-81BE-7CE522A940D2