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GB 36900.2-2018 English PDF

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GB 36900.2-2018: Concrete High Integrity Container for Low-and-Intermediate Level Radioactive Solid Wastes
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GB 36900.2-2018English539 Add to Cart 6 days [Need to translate] Concrete High Integrity Container for Low-and-Intermediate Level Radioactive Solid Wastes Valid GB 36900.2-2018

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Standard similar to GB 36900.2-2018

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Basic data

Standard ID GB 36900.2-2018 (GB36900.2-2018)
Description (Translated English) Concrete High Integrity Container for Low-and-Intermediate Level Radioactive Solid Wastes
Sector / Industry National Standard
Classification of Chinese Standard Z05
Word Count Estimation 27,295
Date of Issue 2018-11-19
Date of Implementation 2019-03-01
Regulation (derived from) Ministry of Ecology and Environment Announcement No.50 of 2018; National Standard Announcement No.15 of 2018
Issuing agency(ies) State Administration for Market Regulation, China National Standardization Administration

GB 36900.2-2018: Concrete High Integrity Container for Low-and-Intermediate Level Radioactive Solid Wastes


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(Low and medium level radioactive waste high integrity container - concrete container) 1ICS 13.030 Z 05 National Standards of People's Republic of China Low and medium level radioactive waste high integrity containers --Concrete container Concrete High Integrity Container for Low-and-Intermediate Level Radioactive Solid Wastes Published on.2018-10-29 2019-3-1 implementation State Market Supervisory Administration Ministry of Ecology and Environment release I directory Foreword. II 1 Scope..1 2 Normative references..1 3 Terms and Definitions.1 4 Basic safety requirements 2 5 Product Performance Requirements 4 6 Inspection method..5 7 Inspection rules..8 8 logo. 10 9 Storage and transportation of products..10 Appendix A (Regulatory Directory) Product Specifications..11 Appendix B (normative catalogue) quality loss test method 14 Appendix C (normative catalogue) porosity test method 15 Appendix D (normative catalogue) nitrogen permeability test method. 17 Appendix E (normative catalogue) Method for determination of radionuclide Cs-137 diffusion coefficient.17 Appendix F (normative catalogue) Determination of the limits of external defects in concrete containers.21 Appendix G (normative catalogue) Non-destructive testing method for concrete containers.23 36900.2-2018

Foreword

To implement the "Environmental Protection Law of the People's Republic of China" The Nuclear Safety Law of the Republic establishes this standard to prevent and control radioactive pollution, improve environmental quality, and protect human health. Low and medium level radioactive waste high integrity container series Standard high integrity container series made of three different materials Standard composition. - "High-integrity container for low- and medium-level radioactive waste - ductile iron container" (GB 36900.1); - "High-integrity container for low- and medium-level radioactive waste - concrete container" (GB 36900.2); - "High-integrity container for low- and medium-level radioactive waste - cross-linked high-density polyethylene containers" (GB 36900.3). This standard is the second part of the "low and medium level radioactive waste high integrity container - concrete container" (GB 36900.2), specifies high-integrity concrete containers for packaging low- and medium-level radioactive solid waste (hereinafter referred to as "concrete container") basic safety requirements, product performance requirements, inspection methods, inspection rules, signs and Product storage and transportation requirements. Appendix A~G is a normative appendix. This standard is the first release. This standard is formulated by the Department of Environmental Protection Radiation Protection, the Nuclear Safety Supervision Department, and the Science and Technology Standards Department. This standard was drafted. China Nuclear Power Engineering Co., Ltd., Tsinghua University, China Institute of Atomic Energy, Shanghai Nuclear Engineering Research and Design Institute, China Building Materials Science Research Institute Co., Ltd. This standard has been implemented since March 1,.2019. This standard is explained by the Ministry of Ecology and Environment. 36900.2-2018 Low and medium level radioactive waste high integrity container - concrete container

1 Scope of application

This standard specifies the high integrity container for concrete used for packaging low and medium level radioactive solid waste (hereinafter referred to as “mixed” Basic safety requirements, product performance requirements, inspection methods, inspection rules, identification and storage and transportation of products begging. This standard applies to waste conditioning, storage, transportation and disposal activities in the management of low- and medium-level radioactive solid waste. Concrete containers used are not suitable for packaging containers containing high level waste and used as Type B and Type C packages. This standard applies to the design, manufacture, procurement, inspection and other activities of concrete containers.

2 Normative references

The contents of this standard refer to the terms in the following documents. For undated references, the valid version applies to this standard. GB 5749 Sanitary Standard for Drinking Water Safety regulations for near-surface disposal of low- and medium-level radioactive solid wastes GB 9132 GB 11806 Safe Transport Procedure for Radioactive Material GB 12711 Low and medium level radioactive solid waste packaging safety standards GB 50119 Concrete Admixture Application Technical Specifications GB/T 175 universal Portland cement GB/T 1596 for fly ash in cement and concrete GB/T 14684 construction sand GB/T 14685 construction pebbles, gravel GB/T 15219 Quality assurance of transportation and packaging of radioactive materials GB/T 18046 for granulated blast furnace slag powder in cement and concrete GB/T 27690 silica fume for mortar and concrete GB/T 50081 Standard test method for mechanical properties of ordinary concrete GB/T 50082 standard test method for long-term performance and durability of ordinary concrete Methods for determination of physico-physical properties of coal and rock - Part 5. Methods for determination of water absorption of coal and rock JG/T 5004 concrete ultrasonic detector Classification of Radioactive Waste (Ministry of Environmental Protection, Ministry of Industry and Information Technology, National Defense Science and Technology Industry Bureau announced the 65th of.2017) number)

3 Terms and definitions

The following terms and definitions apply to this standard. 3.1 high integrity container high integrity container In the expected life of more than 300 years, it can effectively contain the containers of low- and medium-level radioactive solid waste contained therein. high The integrity container can be made of different materials (eg concrete, ductile iron, high density polyethylene and/or composite). 36900.2-2018 3.2 porosity porosity The ratio of the pore volume inside the porous object to the total volume of the object. 3.3 sand surface sandy surface Defects on the surface of concrete containers not exceeding 2 mm, such as pitting, peeling, sanding and pits on the outer surface. 3.4 hollow cavity On the surface or inside of the concrete container structure, the unfilled space of pits, bubbles, holes, etc., having a depth or length exceeding 2 mm. 3.5 gap outer defect Defects, corners and partial defects caused by mechanical external forces during the manufacture or handling of concrete container surfaces. 3.6 Type B package B type package B (U) type package and/or B (M) type package that meets the requirements of GB 11806. 3.7 Type C package C type package C type package that meets the requirements of GB 11806.

4 basic safety requirements

4.1 General safety requirements 4.1.1 High integrity containers are capable of maintaining radioactive content for more than 300 years under long-term storage or final disposal conditions. can. 4.1.2 The structural material and sealing material of the high integrity container shall be the contents contained in it and the environment in which it is placed (eg temperature, humidity, Pressure, corrosive media, radiation field, sunlight exposure). If necessary, it can be placed inside and outside the concrete container in corrosion resistance. Lining, jacket or coating and venting device with filter. 4.1.3 The structure of high integrity containers should be considered for ease of handling, stacking and prevention of surface area water. 4.1.4 When used as a transport container, it should also meet the requirements of GB 11806. If necessary, additional shock absorbers can be added. 4.1.5 The design, procurement, manufacturing and other activities of high-integrity containers shall be prepared in accordance with the requirements of GB/T 15219. Outline and follow the instructions. 4.2 Special safety requirements 4.2.1 Requirements for content a) Meet the requirements of GB 9132, the Classification of Radioactive Waste and other relevant standards. b) The volume of free liquid in the waste package should be less than 1% of the volume of solid waste. c) The waste contained in the container shall not contain chemicals that are incompatible with the material of the container. 4.2.2 Requirements for raw materials a) The raw materials used to make concrete containers mainly include. cement, aggregates, admixtures, reinforcing materials, chemical admixtures and Mix water. In addition to meeting the corresponding national or industrial standards, the quality of raw materials should also meet the requirements of concrete resistance. Special requirements for variety and performance proposed by the long-term requirements. 36900.2-2018 b) Portland cement should be selected with a strength of not less than 42.5. c) For coarse aggregates, high-purity limestone inactive aggregates with high compressive strength and relatively rough surface should be used. d) The fine aggregate should be medium-heavy river sand with uniform texture, good gradation and low water absorption, and the mud content should be less than 1.0%. e) Chemical admixtures should use products with high water reduction rate, which can significantly improve the durability of concrete and the quality is stable. f) Admixtures should be of a variety of quality. g) Mixing water should meet the requirements of drinking water according to GB 5749. h) Reinforcing materials (rebar, fiber, etc.) should be of good tensile and corrosion resistant materials. 4.2.3 Hardened concrete performance requirements a) Mechanical properties 1) 28-day cube compressive strength ≥ 60MPa; 2) 28 days splitting tensile strength ≥ 5.5MPa; 3) 28-day static compression modulus ≥35GPa. b) physical properties 1) 28 days shrinkage ≤ 300 μm/m; 2) 28 days of mass loss < 30kg/m3; 3) Porosity ≤ 12% after 56 days of curing. c) γ-resistant radiation performance After irradiation with a cumulative dose of ≥106 Gy, the compressive strength loss was < 20%, and no cracks were visible to the naked eye. d) Frost resistance The concrete anti-freeze rating is not less than F400. e) Impermeability 1) Water seepage height ≤ 5mm; 2) nitrogen permeability coefficient ≤ 5.0 × 10-18m2; 3) 铯-137 diffusion coefficient (aqueous medium) ≤1.0×10-3cm2/d; 4) The 28-day chloride ion mobility coefficient DRCM < 1.5 × 10-12 m2/s. f) chemical stability 1) Sulfate resistance grade > KS150; 2) The carbonization depth d < 0.1 mm for 28 days. g) Biodegradation resistance test It should be carried out as needed. 4.2.4 Requirements for concrete container structure The structure of the concrete container shall meet the requirements of the concrete container structure for the temporary storage, transportation and final disposal of the waste package, and ensure the stacking code and The stability of the transportation process. The concrete container shall be provided with components for gripping and matched with the spreader. 4.2.5 Performance requirements for sealing materials The sealing material is used to seal the concrete container in conformity with the structural form of the concrete container. Sealing material in addition to capping operation 36900.2-2018 In addition to the required operational performance, other performance is consistent with the requirements of Section 4.2.3.

5 Product performance requirements

5.1 Models, specifications and dimensions The type, specification and size of concrete containers should be standardized and serialized as much as possible. Recommended specifications for barrel and box concrete containers See Appendix A. Users can use concrete containers of other specifications and sizes as needed, but their performance should meet the mandatory requirements of this standard. Sexual requirements. 5.2 Appearance quality 5.2.1 Dimensional inspection Dimensional deviation of concrete bucket type containers shall comply with the requirements of Table 1; the dimensional deviation of concrete box type containers shall comply with the requirements of Table 2. Table 1 Concrete bucket type high integrity container size deviation Maximum size (mm) Outer diameter (mm) Inner diameter (mm) Height (mm) Coaxiality (mm) ≤1500 ±2 ±2 ±2 ±3 >1500 ±3 ±3 ±3 ±5 Table 2 Dimensional deviation of concrete box type high integrity container biggest size (mm) Length (mm) width (mm) height (mm) diagonal Length difference (mm) Inside and outside inside and outside ≤2000 ±2 ±2 ±2 ±2 ±2 ±2 ±4 >2000 ±3 ±3 ±3 ±3 ±3 ±3 ±6 5.2.2 Sand surface The surface of the concrete container should be smooth and flat. The surface area of each piece of sand should not exceed 100cm2. The piece and the piece cannot be connected. The product should not exceed 10% of the total surface area of the concrete container. See 6.3.2 for the test method. 5.2.3 void The area of each cavity on the surface of the concrete container shall not exceed 20 mm2, and the hole and the hole shall not be connected. The outer surface of each square meter shall not exceed More than two. Holes > >5 mm deep are not allowed under any circumstances. See 6.3.3 for the test method. 5.2.4 Crack Cracks with a width of ≤ 0.1 mm shall not be longer than 100 mm on the outer surface. 0.2mm ≥ width > 0.1mm crack, in The length of the outer surface shall not exceed 20 mm. Cracks with a width greater than 0.2 mm are not allowed under any circumstances. See 6.3.4 for the test method. 36900.2-2018 5.2.5 gap The gap that does not affect the strength and containment performance of the concrete container may not be repaired; the depth is greater than 5 mm. Repair should be handled according to unqualified products. See 6.3.5 for the test method. 5.3 Internal quality The concrete should be dense and free of voids >5 mm in diameter; aggregates and reinforcements should be evenly distributed without significant delamination; steel There is no obvious movement of the rib position, the thickness of the protective layer meets the design requirements; the concrete is well combined with the reinforcing fiber, steel bar and embedded parts, and there is no off Leaving the phenomenon. See 6.3.6 for the test method. 5.4 Impermeability The concrete container shall be subjected to a water seepage test in accordance with the provisions of 6.3.7 to verify its impermeability. Concrete container filled with water 3 Concrete containers should be free of leakage and stagnation after the day. 5.5 Load performance The concrete container shall be subjected to a stacking test in accordance with the provisions of 6.3.8 to verify its load performance. After the stacking test, coagulation The earth container should be free from deformation and damage and should meet the water resistance of the product. 5.6 Impact resistance The concrete container shall be subjected to a drop test in accordance with the provisions of 6.3.9, and the concrete container shall be subjected to a penetration test according to Section 6.3.10. To test its impact resistance. The qualified index of the concrete container drop test is. after the drop test, the concrete container has no content spilled. The qualified index for the concrete container penetration test is. the concrete container shall not be damaged after the test. 5.7 Operating performance Conducting performance tests on handling, lifting or bolting of operating members or embedded parts of concrete containers shall be carried out for 50 consecutive operations without cause Barriers, components or embedded parts are not damaged. 5.8 Non-destructive testing Non-destructive testing of concrete containers shall be carried out in accordance with the provisions of 6.3.11. Ultrasonic velocity average (mv), standard deviation of all measuring points (sv), the minimum value of ultrasonic velocity (vmin) and the design eigenvalue (vk) of the ultrasonic velocity, and the design standard deviation (σ) should satisfy the following relationship. Mv-sv ≥ vk ; vmin ≥ vk-σ.

6 Test methods

6.1 Raw material inspection methods For the detection of raw materials for concrete containers, there are special requirements in the formulation design according to the method specified by the formula design; When special requirements are met, they should be in accordance with the requirements of the corresponding national or industry standards. a) Cement quality testing shall be carried out in accordance with the provisions of GB/T 175; b) The quality inspection of coarse aggregate is carried out in accordance with the provisions of GB/T 14685; c) Sand quality testing shall be carried out in accordance with the provisions of GB/T 14684; d) The quality test of fly ash shall be carried out in accordance with the provisions of GB/T 1596; e) Silica fume quality testing shall be carried out in accordance with the provisions of GB/T 27690; 36900.2-2018 f) The quality inspection of slag powder is carried out in accordance with the provisions of GB/T 18046; g) The quality inspection of concrete chemical admixtures shall be carried out in accordance with the provisions of GB 50119; h) Drinking water that meets GB 5749 “Sanitary Standard for Drinking Water” can be used as concrete mixing water without testing. 6.2 Hardened concrete performance test method 6.2.1 Mechanical properties a) The cubic compressive strength test is carried out in accordance with the provisions of GB/T 50081; b) The splitting tensile strength test is carried out in accordance with the provisions of GB/T 50081; c) The static compression modulus test is carried out in accordance with the provisions of GB/T 50081. 6.2.2 Physical properties a) The shrinkage test is carried out in accordance with the provisions of the shrinkage test (contact method) in GB/T 50082; b) See Appendix B for the quality loss test method; c) See Appendix C for porosity testing methods. 6.2.3 γ-resistant radiation performance Irradiation intensity (1.2 ~ 1.4) × 103 Gy/h, γ-irradiation dose ≥ 1.0 × 106 Gy. Compressive strength test of cube after irradiation According to the provisions of GB/T 50081. 6.2.4 Frost resistance The antifreeze test method is carried out in accordance with the GB/T 50082 antifreeze test (quick freezing method). 6.2.5 Impermeability a) water penetration resistance test according to GB/T 50082 (water seepage height method), the test pressure is 2.0MPa; b) See the D for nitrogen permeability test method; c) 铯-137 diffusivity test method is shown in Appendix E; d) The chloride ion mobility coefficient test method is carried out according to the provisions of the fast chloride ion mobility coefficient method in GB/T 50082. 6.2.6 Chemical stability a) The anti-sulfate attack test is carried out in accordance with the provisions of GB/T 50082; b) The carbonization performance test shall be carried out in accordance with the provisions of GB/T 50082. 6.3 Concrete container performance test method 6.3.1 Dimensional inspection The measurement was performed with a universal measuring tool with an accuracy of 0.5 mm. 36900.2-2018 6.3.2 Sand surface The transparent film shown in Figure F.1 in shape and size is placed on the defect for inspection. Transparency consists of two pieces, each piece It is 100mm long and 50mm wide. Two pieces of film can be placed in parallel in length or width. The depth of the defect was measured with a depth gauge with an accuracy of 10 mm ± 0.1 mm. 6.3.3 Cavity The size and depth of the cavity were checked with a depth gauge of 10 mm ± 0.1 mm and a diameter of 10 mm ± 0.1 mm. 6.3.4 Crack measurement The crack width and length were checked using a crack tester with a precision of 0.01 mm. 6.3.5 Gap Check the gap size with a universal gauge. 6.3.6 Internal quality inspection The concrete container to be inspected is longitudinally cut in half, and the concrete compactness of the section and the distribution of the aggregate are visually inspected. The gauge detects the size of the void and the distribution of the reinforcing material (rebar, fiber). 6.3.7 Impermeability On the 7th day after demolding, fill the concrete container with the appearance quality and size and fill it with water, cover it, and check it after the 28th day. Check the concrete container for leaks and dampness. 6.3.8 Stacking test Place the concrete container on a sturdy platform with a uniform solid material with a density of 2500kg/m3 and a filling system. The number is 95%. The stacking test was carried out in accordance with the provisions of GB 11806, and the stacking time was 24 hours. An equivalent method can also be used instead. stack The concrete container should be free from any deformation and damage after the code test. 6.3.9 Drop test A 45° oblique straight drop test was performed on the concrete container. The concrete container contains a uniform solid material with a density of 2500kg/m3 during the test. The filling factor is 95%. Drop test in accordance with the provisions of GB 11806, the free fall distance of the drop test should meet GB 11806 The provisions for testing the free fall distance of the package under normal conditions of transport. 6.3.10 Through test The concrete container contains a uniform solid material with a density of 2500 kg/m3 and a filling factor of 95%. In accordance with the provisions of GB 11806 Carry out the test under normal conditions of transport. 36900.2-2018 6.3.11 Nondestructive testing Non-destructive testing of concrete containers is carried out in accordance with the provisions of Appendix G.

7 Inspection rules

7.1 Type test Type inspection should be carried out when one of the following conditions occurs in the production of concrete containers. a) Trial-type identification of new product production or conversion of old products; b) After formal production, if there are major changes in structure, materials and processes, which may affect product performance; c) After the product has been discontinued for a long time (more than one year), when the production is resumed; d) When there is a big difference between the factory inspection result and the type inspection result; e) when the national nuclear safety regulatory authority proposes or requires the user to carry out type inspection; At least three standard samples shall be kept for each batch type test for later traceability inspection. The retention time is three years. The type test content and test sequence of the concrete container are tested item by item according to the items listed in Table 3. Various tests can be done on a concrete On the container. The number of concrete containers for the qualification test for producing the same type of concrete container shall not be less than three. When the product is discontinued for a long period of time (more than one year), all types of test contents may not be carried out when the production is resumed, but it must be completed. The test contents of items 1~6, 10, 15~18, 20, and 24. Table 3 Type inspection items Serial number detection item

1 cube compressive strength

2 tensile strength

3 Static compression modulus

4 contraction

5 weight loss

6 Porosity

7 γ-resistant radiation performance

8 Frost resistance

9 water seepage

10 nitrogen permeability 11 Cs-137 diffusion coefficient 12 chloride ion mobility coefficient 13 Resistance to sulfate attack 14 carbonization performance 15 size inspection 16 appearance defects 36900.2-2018 17 hollow 18 crack 19 Internal quality 20 impermeability 21 load performance 22 Impact resistance 23 Operating performance 24 non-destructive testing 7.2 Factory inspection The size, appearance quality and non-destructive testing of concrete containers should be checked one by one. The test items are shown in Table 5. Each batch of the same specification Pump 10% (at least one) for water seepage test and stacking test. If the sampling test fails, the batch is judged to be unqualified. After the inspection, the concrete card, material certificate, product inspection report and concrete container shall be provided for each concrete container. certificate. 7.3 Decision rules 7.3.1 Type test determination rules If all the tests are qualified, the inspection batch is judged to be qualified. If there is a failure, the inspection batch is unqualified. 7.3.2 Factory inspection judgment rules According to the importance of the impact of the test items on the performance of concrete containers, the test items are divided into Class A, Class B and Class C. The concrete container inspection items are shown in Table 4. Table 4 Concrete container inspection item list Serial number test item A class B class C class 1 Internal dime...

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