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GB 36900.3-2018 English PDF

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GB 36900.3-2018: Concrete High Integrity Container for Low-and-Intermediate Level Radioactive Solid Wastes
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GB 36900.3-2018English399 Add to Cart 4 days [Need to translate] Concrete High Integrity Container for Low-and-Intermediate Level Radioactive Solid Wastes Valid GB 36900.3-2018

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Standard similar to GB 36900.3-2018

GB/T 40009   GB/T 39224   GB/T 38785   GB/T 45754   GB/T 32124   GB 36900.1   

Basic data

Standard ID GB 36900.3-2018 (GB36900.3-2018)
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 20,223
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 36900.3-2018: Concrete High Integrity Container for Low-and-Intermediate Level Radioactive Solid Wastes


---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
(Low and medium level radioactive waste high integrity container - crosslinked high density polyethylene container) 113ICS 13.030 Z 05 National Standards of People's Republic of China Low and medium level radioactive waste high integrity containers --Crosslinked high density polyethylene container Cross Linked High Density Polyethene 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

Content

Foreword. II 1 Scope..1 2 Normative references..1 3 Terms and definitions. 2 4 Basic safety requirements 2 5 Product performance requirements..5 6 Inspection method..5 7 Inspection rules..7 8 logo .9 9 Product Storage and Transportation..9 Appendix A (informative) List of chemical substances that are incompatible with containers..11 Appendix B (Normative) Container Models and Dimensions .12 Appendix C (Normative) Container Structure.13 Appendix D (normative appendix) creep extrapolation calculation method.14

Foreword

In order to implement the Environmental Protection Law of the People's Republic of China, the Law of the People's Republic of China on Prevention and Control of Radioactive Pollution, The whole law, the prevention and control of radioactive pollution, improve environmental quality, protect human health, and develop this standard. The low-to-medium-level radioactive waste high-integrity container series consists of high-integrity container standards made of three different materials. - "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 third part of the "low and medium level radioactive waste high integrity container - cross-linked high density polyethylene container" (GB 36900.3), specifies the safety of cross-linked high-density polyethylene high-integrity containers for packaging low- and medium-level radioactive solid waste Requirements, quality requirements, inspection methods, inspection rules, identification and storage and transportation. Appendix A of this standard is an informative appendix, and Appendix B~Appendix D is a normative appendix. This standard is the first release. This standard is formulated by the Radiation Source Safety Supervision Department of the Ministry of Ecology and Environment, the Nuclear Facilities Safety Supervision Department, and the Science and Technology Standards Department. This standard is mainly drafted by. China Guangdong Nuclear Power Engineering Co., Ltd., China Guangdong Nuclear Research Institute Co., Ltd., National Power Investment Group Yuanda Environmental Protection Co., Ltd. Ltd. and National Power Investment Group Co., Ltd. This standard has been implemented since March 1,.2019. This standard is explained by the Ministry of Ecology and Environment. Low and medium level radioactive waste high integrity container - crosslinked high density polyethylene container

1 Scope of application

This standard specifies cross-linked high-density polyethylene high-integrity containers for packaging low- and medium-level radioactive solid wastes (hereinafter referred to as “capacity” Safety requirements, quality requirements, inspection methods, inspection rules, identification and storage, and transportation. This standard applies to waste conditioning, storage, transportation and disposal in the safety management activities of low and medium level radioactive solid waste. It is used for packaging high-level waste or as a packaging container for Type B and Type C packages. This standard applies to the design, manufacture, procurement, inspection and other activities of 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. 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 19434.8 Dangerous goods rigid plastic intermediate bulk containers inspection safety specification performance test GB/T 711-2017 high quality carbon structural steel hot rolled steel sheet and strip Plastics -- Determination of density of non-foam plastics -- Part 1 . Dipping method, liquid pycnometer method and titration method GB/T 1040.1 Determination of tensile properties of plastics - Part 1. General GB/T 1043.1 Determination of impact properties of simply supported beams - Part 1 . Non-instrumental impact test GB/T 1634.1 Determination of deformation temperature of plastics - Part 1 . General test methods GB/T 1842 plastic polyethylene environmental stress cracking test method GB/T 2408 Determination of the burning properties of plastics - Horizontal method and vertical method GB/T 2411 Plastic and hard rubber using a hardness tester to determine the indentation hardness (Shore hardness) Standard environment for GB/T 2918 plastic sample conditioning and testing GB/T 4610 Plastic hot air furnace method for measuring temperature Determination of embrittlement temperature of GB/T 5470 plastic impact method GB/T 9341 Determination of bending properties of plastics GB/T 11546.1 Determination of creep properties of plastics - Part 1 GB/T 11547 Determination of the properties of plastics GB/T 15219 Quality assurance of transportation and packaging of radioactive materials GB/T 19466.3 GB/T 24128 Radioactive waste classification" Plastics - Differential scanning calorimetry (DSC) - Part 3. Determination of melting and crystallization temperature and enthalpy Plastic mold resistance test method (Ministry of Environmental Protection, Ministry of Industry and Information Technology, National Defense Science and Technology Industry Bureau Announcement No. 65 of.2017)

3 Terms and definitions

The following terms and definitions apply to this standard. 3.1 High Density Polyethylene High Density Polyethene (HDPE) High-density polyethylene is a kind of thermoplastic resin material with high crystallinity, and its density is usually 0.935-0.960g/cm3, which has good resistance. Thermal, chemical stability, radiation resistance, biodegradation, creep resistance, mechanical strength and other properties. 3.2 Cross-linked high-density polyethylene Cross Linked High Density Polyethene (CL-HDPE) Through the cross-linking reaction, the polyethylene molecules change from a linear structure to a network structure, and the mechanical properties, aging resistance and environmental stress resistance of the material Corrosion resistance, chemical resistance, and creep resistance are enhanced to form crosslinked high density polyethylene. 3.3 High Integrity Container High Integrity Container (HIC) It is expected to contain containers for low- and medium-level radioactive solid waste contained in it for more than 300 years. High finish Integrity containers can be made of different materials (such as concrete, ductile iron, high density polyethylene or composites). 3.4 Compatible Compatibility Two or more substances are in contact with each other and do not cause a bad physical and chemical reaction. 3.5 Type B package B type Package Meet the B type package specified in GB 11806. 3.6 Type C package C type Package Meet the C-type package specified in GB 11806.

4 basic safety requirements

4.1 General safety requirements 4.1.1 Under the conditions of long-term storage and final disposal, the container can maintain the containment performance of the radioactive content for more than 300 years. 4.1.2 The structural material of the container shall be in accordance with the contents of the container and the environmental conditions in which it is used (eg temperature, humidity, corrosive medium, irradiation, yang) Light exposure) compatible. If necessary, lining, jacket or coating can be placed inside and outside the container, with a filter vent or internal dewatering Pieces and so on. 4.1.3 The structural design of the container should be considered for easy handling, stacking and prevention of surface water in the container. 4.1.4 When used as a transport container, the requirements specified in GB 11806 shall be met, and a shock absorbing device may be added if necessary. 4.1.5 The design, procurement, manufacturing and other activities of the container shall be prepared in accordance with the requirements of GB/T 15219 and shall be in accordance with the requirements. Row. 4.2 Special safety requirements 4.2.1 Content requirements 4.2.1.1 The waste contained in the container shall meet the corresponding provisions of the Classification of Radioactive Waste and GB 9132. 4.2.1.2 Containers can be used to hold low and medium levels of radioactive solid waste, such as. a) resin, mud, diatomaceous earth and granular activated carbon; b) filter element and filter core; c) Waste ash from incineration ash or humidification oxidation treatment. 4.2.1.3 The waste contained in the container shall not contain chemical substances that are incompatible with the material of the container, see Appendix A. 4.2.1.4 The volume of free liquid in the waste package should be less than 1% of the volume of solid waste. 4.2.2 Raw material requirements 4.2.2.1 Raw materials for containers include high density polyethylene resins, crosslinkers, antioxidants and UV inhibitors. 4.2.2.2 The high-density polyethylene resin selected for the container shall be powdery, natural, photosynthetic, weather-stable, cross-linkable and suitable for rotary molding. work. 4.2.3 Molding material requirements The crosslinked high density polyethylene after molding shall meet the performance requirements of Table 1. Table 1 Performance requirements of molding materials Serial number performance unit requirements test parameter test method Physical properties Density (method A) kg/m3 ≥940 23°C GB/T 1033.1 Environmental stress cracking F50 (A method) h >1000 GB/T 1842 Mechanical properties Shore hardness (D) N/mm2 ≥60 GB/T 2411 Tensile strength MPa ≥19 50 mm/min GB/T 1040.1 Modulus of elasticity MPa ≥600 50 mm/min GB/T 1040.1 Tensile strain at break % ≥350 50 mm/min GB/T 1040.1 Flexural modulus MPa ≥680 2 mm/min GB/T 9341 Simply supported beam notched impact strength KJ/ m2 ≥10 23°C GB/T 1043.1 Thermal performance Load deformation temperature °C ≥70 0.45 MPa GB/T 1634.1 Embrittlement temperature (A method) °C ≤-75 GB/T 5470 Melting temperature °C ≥125 GB/T 19466.3 Flash point temperature °C ≥ 380 GB/T 4610 4 Flame retardant performance HB GB/T 2408

5 Chemical resistance

Incompatibility except as listed in Appendix A In addition to studying matter, the most common Good with inorganic acids, bases and salts Corrosion resistance. 6 γ-resistant radiation performance Tensile strength, hardness and hardness of the sample No loss of elastic modulus, fracture pull The extension strain should be greater than 50%. Cumulative dose spoke Photo 1×106Gy See 6.2.5 for details. 7 Biodegradability The growth level of mold is grade 0. temperature 29 ° C ± 1 ° C, Relative humidity ≥90%. See 6.2.6 for details.

8 creep resistance

On the time-creep stress line Extrapolation for 300 years The stress is not less than 9.7 MPa. Test temperature is 25 ° C ± 1 ° C. See 6.2.7 for details. Note 1. If there are special requirements for chemical corrosion resistance test, it can be carried out in accordance with GB/T 11547. Note 2. UV resistance test and thermal cycle performance test should be carried out as needed. 4.2.4 Structural requirements 4.2.4.1 The container barrel and top cover are formed by rotational molding or other suitable processes and are not allowed to be spliced. 4.2.4.2 The mouth of the container may be threaded or other structure, and the mouth of the barrel and the top cover shall be properly matched to ensure the container is sealed. 4.2.4.3 When the contents of the container are exhausted due to radiation degradation, an exhaust device with a filter shall be provided on the top cover of the container. The exhaust device shall not impair the containment capacity of the container. The exhaust unit should meet the following performance requirements. a) It should be able to release the gas generated in the container while preventing the entry of external moisture and the leakage of the contents. b) The filter should have a filtration efficiency of not less than 99.97% for 0.45 μm dioctyl phthalate (DOP). c) Corrosion-resistant and radiation-resistant materials should be used, which are compatible with the container materials and contents, and do not affect the container's containment ability. 4.2.4.4 The container basket should be able to withstand 3 times the rated mass. At this time, the maximum stress of the basket does not exceed the yield strength of the component material; it should also withstand 5 times the rated mass, at which time the maximum stress of the basket does not exceed the ultimate strength of the component material. 4.2.4.5 Internal components (such as linings, dewatering components, etc.) to be added shall be compatible with the contents and high-density polyethylene materials and shall not be broken. The containment ability of bad containers. 4.2.4.6 The inner and outer metal component materials of the container shall meet at least the performance requirements of No. 20 steel in GB/T 710. 4.2.4.7 When the design or use unit of the container has special requirements on the size or structure of the container, the consent of the disposal unit is required and With the consent of the regulatory authorities. In addition to these special requirements, the remaining requirements for the container should be implemented in accordance with this standard. 4.2.5 Use environment 4.2.5.1 Containers should be protected from exposure to sunlight. The exposure to sunlight during the period from manufacture to final disposal should not exceed one year. 4.2.5.2 The design temperature of the container is -40 ° C ~ 70 ° C, the operating temperature during process operation, storage and transportation, disposal should meet the following requirements. a) Process operation. -40 ° C ~ 60 ° C b) Storage and transportation. -40 ° C ~ 70 ° C c) Disposal. ≤25°C

5 Product performance requirements

5.1 Models, specifications and dimensions The type, specification and size of the container should be standardized and serialized as much as possible. See Appendix B for the recommended model and dimensions of bucket and box containers. See Figure C for a schematic representation of the structure of the container. Users can use other sizes and sizes of containers as needed, but their performance should meet the requirements of this standard. Mandatory requirements. 5.2 Appearance quality The appearance quality of the inner and outer surfaces of the container shall comply with the requirements of Table 2. Table 2 Container appearance quality requirements Project technical requirements bubble Number ≤ 3 barrel mouth, bottom of container No air bubble diameter/mm ≤ 3 Black impurity ≤5 per.200mm ×.200mm surface Dispersed distribution; no visible impurities Length/mm ≤ 4 The surface of the barrel surface is smooth, no blisters, no plasticization Cracks and holes are not allowed There is no effusion on the outer wall. Slight scratches, no more than 1% of surface area Oil pollution is not allowed Deformation is not allowed Exhaust filter is smooth, no obstruction; fastened to the top cover 5.3 Performance test requirements 5.3.1 It shall be subjected to the sealing test specified in 6.3.2. After the test, the container was leak free. 5.3.2 The stacking test specified in 6.3.3 shall be carried out. After the test, the container has no leakage and no deformation that affects transportation safety. 5.3.3 It shall be subjected to the penetration test specified in 6.3.4. After the test, the surface of the container was not damaged. 5.3.4 The drop test specified in 6.3.5 shall be applied. After the test, the container barrel and the top cover were not cracked, and the container was free from leakage.

6 Test methods

6.1 Sample Preparation and Condition Adjustment 6.1.1 Sample preparation The sample can be prepared from the rotomolded product or from the small mold product configured in the product processing. The requirements for the preparation of each performance sample are as follows. a) The samples used in the performance tests of items 1, 2, 3, 4 and 7 in Table 1 are prepared according to the corresponding standards; b) The samples used for the detection of γ-irradiation resistance and creep resistance are prepared according to the standards corresponding to the properties measured in the performance test. 6.1.2 Sample state adjustment The standard environment for the condition adjustment and test of the sample is the standard environment (23/50) specified in GB/T 2918, ie the temperature is 23±2°C, Humidity 50% ± 10%. The state adjustment time is at least 40h. 6.2 Forming material performance test method 6.2.1 Physical properties The physical property test of the material was carried out in accordance with the test method specified in item 1 of Table 1. 6.2.2 Mechanical properties The mechanical properties of the material were tested in accordance with the test method specified in item 2 of Table 1. 6.2.3 Thermal performance The thermal property test of the material was carried out in accordance with the test method specified in item 3 of Table 1. 6.2.4 Flame retardant properties The flame retardant properties of the materials were tested in accordance with the test methods specified in item 4 of Table 1. 6.2.5 γ-resistant radiation performance Irradiate the sample with a 60Co radiation source (irradiation dose rate should not be higher than 1×104 Gy/h) until the cumulative absorbed dose of the sample reaches the table. Cumulative absorbed dose requirements as specified in item 4-1 of 4-1. Determination of tensile strain at break, hardness, tensile strength and elastic modulus of the sample after irradiation the amount. 6.2.6 Biodegradability Anti-fungal performance test according to GB/T 24128. Place the culture dish containing the inoculated sample at a temperature of 29 ° C ± 1 ° C, phase Incubate for 28 days in a biological incubator with a humidity of ≥90%. The mold growth grade of the sample after the test was tested. 6.2.7 Creep resistance The creep rupture test was carried out in accordance with the provisions of GB/T 11546.1. At least 7 stresses should be used for the creep rupture test to make the creep fracture The time is about 1h, 10h, 30h, 100h, 300h, 1000h and 3000h, and the longest time for creep rupture should be no less than 3000h, each should Use at least 2 parallel samples for force. After the test, draw the time-creep stress extrapolation line as shown in Appendix D. 6.3 Container performance test method 6.3.1 Structural dimensions and appearance 6.3.1.1 Structural dimensions. Universal gauge inspection with an accuracy of 0.5 mm. 6.3.1.2 Appearance inspection. Air bubbles and black impurities are measured with a measuring instrument with an accuracy of 0.01 mm, and the rest of the items are visually observed under natural light. 6.3.2 Seal test The sealing test was carried out in accordance with the hydraulic test method in GB 19434.8. Apply a hydraulic pressure of not less than 52 kPa (gauge pressure) inside the container, and protect Hold internal pressure for at least 10 minutes. 6.3.3 Stacking test The container contains a uniform solid material having a density of 1600 kg/m3 and a filling factor of 90%. Carry out the stacking test according to the provisions of GB 11806 Test, stacking time is 24h. 6.3.4 Through test The container contains a uniform solid material having a density of 1600 kg/m3 and a filling factor of 90%. Through test according to the provisions of GB 11806 Test, the height of the drop is 1m. 6.3.5 Drop test The container contains a uniform solid material having a density of 1600 kg/m3 and a filling factor of 90%. Make the bottom of the container according to the provisions of GB 11806 The 45° oblique free fall test, the drop height meets the requirements of Table 3. Table 3 Free fall distance of the drop test Rated mass R (1)/kg free fall distance/m R< 5000 1.2 5000≤R< 10000 0.9 10000 ≤ R < 15000 0.6 R≥15000 0.3 Note. (1) R is the sum of the quality of the container and the quality of the contents.

7 Inspection rules

7.1 Type test 7.1.1 Type inspection requirements Type inspection should be carried out when the container is produced in one of the following cases. 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) In normal production, the physical properties, mechanical properties and flame retardant properties of high-density cross-linked polyethylene materials are tested once a year; d) After the product has been discontinued for a long time (more than one year), the production will resume; e) When there is a big difference between the factory inspection result and the type inspection result; f) When the national nuclear safety regulatory authority proposes or requires the user to carry out type inspection. 7.1.2 Container type inspection shall be carried out in accordance with the provisions of Table 4. Material performance inspection and container performance inspection can be carried out on different containers, each time The number of test containers for identification shall not be less than three. Table 4 Type inspection items Serial number test item

1 density

2 Environmental stress cracking resistance

3 Shore hardness

4 tensile strength

5 modulus of elasticity

6 tensile strain at break

7 flexural modulus

8 simply supported beam notched impact strength

9 load deformation temperature

10 embrittlement temperature 11 melting temperature 12 ignition temperature 13 flame retardant properties 14 Chemical resistance 15 γ-resistant radiation performance 16 Biodegradability 17 creep resistance 18 structure size 19 bubbles 20 black impurities 21 barrel surface 22 Cracks, holes 23 outer wall effusion 24 scratches 25 oil pollution 26 deformation 27 exhaust filter 28 Seal test 29 stacking test 30 through test 31 drop test 7.2 Factory inspection 7.2.1 The container must be type-approved before it can be officially mass-produced. 7.2.2 The delivery of containers shall be inspected in batches, and the same raw materials, the same model, and the containers processed in the same process shall be batches. 7.2.3 The size and appearance quality of the container should be checked one by one. 7.2.4 Each batch of containers is sampled for sealing test. The sampling quantity is shown in Table 5. Table 5 Number of samples (number) Batch range sampling quantity 1~5 1 6~20 2 21~50 3 51～100 4 >100 4% 7.2.5 After passing the inspection, the manufacturer shall provide a material certificate, product inspection report and certificate for each container. 7.3 Decision rules 7.3.1 Decision rules for type inspection 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 Determination rules for factory inspection If all the tests are qualified, the inspection batch is judged to be qualified. If there is a failure, the inspection batch is unqualified. 7.3.3 Treatment of unqualified batches If the sampling is judged to be unqualified, the sampling test shall be doubled and the stringency shall remain unchanged. If it still fails, it is judged that the batch of products is unqualified.

8 logo

8.1 Identification 8.1.1 According to the requirements of GB 12711, the radioactive identification, container number and model number should be sprayed or affixed to the prominent position on the outer surface of the container. 8.1.2 Mark the manufacturer or code, date of manufacture and lot number on the outer surface of the container. 8.2 Quality requirements for marking The label of the container should be eye-catching, clear, and durable, without damaging the performance of the container. 9 Product storage and transport...

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