GB14569.3-1995
Characteristic requirements for solidified waste of low and intermediate level radioactive waste--Bitumen solidified waste
低、中水平放射性废物固化体性能要求 沥青固化体
GB 14569.3-1995 is a current mandatory Chinese national standard for Characteristic requirements for solidified waste of low and intermediate level radioactive waste--Bitumen solidified waste. It appears in the Construction compliance cluster with a product safety focus and has an implementation date of Aug 1, 1996.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the bitumen solidified waste of low and intermediate-level radioactive waste intended for near-surface disposal. It establishes the minimum performance requirements and testing methods for these solidified products. It is primarily mandatory for facilities processing radioactive waste into bitumen matrices for near-surface repositories. Additionally, bitumen solidified waste designated for engineered cavity disposal may refer to this standard.
Technical requirements
This standard specifies the physical and chemical requirements for bitumen solidified waste, focusing on structural integrity and safety. Key parameters include inhomogeneity, water content, and waste loading capacity, which must be strictly controlled to ensure matrix stability. The waste distribution inhomogeneity must not exceed a specific threshold, and total waste包容 capacity is capped to prevent matrix degradation. The standard outlines critical thermal stability parameters, requiring the solidified waste to meet minimum softening point criteria. Furthermore, it establishes strict thresholds for the initial exothermic temperature and ignition point to prevent thermal runaway or fire hazards during storage and transport. Compliance with these thermal limits is mandatory for safety approval. A major focus is placed on water resistance and radiation resistance. The standard sets specific leaching rate limits for key radionuclides such as 60Co, 137Cs, and 90Sr in deionized water. The solidified waste must also demonstrate minimal volume expansion after prolonged water immersion and gamma irradiation exposure.
Testing methods
The standard mandates specific testing procedures to verify compliance. Inhomogeneity is tested via core sampling from a 200L drum, measuring waste distribution at various heights. Water content is determined by a controlled heating and weighing process. Waste loading is measured using a chemical extraction method involving benzene or carbon disulfide. Thermal properties are evaluated using a metal bath procedure for the initial exothermic temperature, while the ignition point and softening point are tested according to referenced standards GB/T 267 and GB/T 4507, respectively. Leaching and immersion tests must be conducted on cylindrical samples to assess water resistance over extended periods. Finally, gamma irradiation resistance is tested using a 60Co radiation source to simulate long-term radiolytic degradation.
FAQs
What products are regulated under GB 14569.3-1995?
This standard applies to bitumen solidified waste intended for near-surface disposal of low and intermediate-level radioactive waste. It can also be referenced for engineered cavity disposal.
What are the key performance requirements for bitumen solidified waste under this standard?
It sets mandatory minimum performance requirements including a maximum inhomogeneity of 20%, specific water content limits, a minimum softening point of 55°C, and strict leaching rate limits for radionuclides.
How does GB 14569.3-1995 relate to other radioactive waste standards?
The standard references several GB/T and GB standards, such as GB 9132 for shallow ground disposal and GB/T 7023 for long-term leach testing, which may share similarities with international ISO standards but are specifically tailored for Chinese regulatory compliance.
The summary above provides a high-level overview of GB 14569.3-1995. To ensure complete compliance for your radioactive waste management products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 14569.3-1995 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Product
- CCS
- F75
- ICS
- 27.120.30
- Competent department
- Ministry of Ecology and Environment
- Technical committee
- Ministry of Ecology and Environment