GB15146.10-2001
Nuclear criticality safety for fissile materials outside reactors--Safety requirements for the use of fixed neutron absorbers
反应堆外易裂变材料的核临界安全 固定中子吸收体的应用安全要求
GB 15146.10-2001 is a current mandatory Chinese national standard for Nuclear criticality safety for fissile materials outside reactors--Safety requirements for the use of fixed neutron absorbers. It appears in the Construction compliance cluster with a product safety focus and has an implementation date of Apr 1, 2002.
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 design, construction, and operation of facilities that handle, process, or store fissile materials outside reactors. It also covers equipment related to the transportation of such materials. It is specifically targeted at systems utilizing fixed neutron absorbers as an integral part of nuclear criticality control.
Technical requirements
This standard specifies the general safety, design, and evaluation requirements for fixed neutron absorber systems used in nuclear facilities. It mandates that these systems must maintain subcriticality under normal and credible abnormal conditions throughout their operational lifetime. Compliance with the administrative requirements of GB 15146.1 and technical criteria of GB 15146.2 is mandatory. The design requirements dictate that the system must maintain its geometric relationship with fissile materials and withstand chemical, physical, radiological, and mechanical degradation. Designers must account for manufacturing tolerances, material uncertainties, and neutron cross-section data to ensure a proper safety margin. The design must also prevent accidental removal or alteration of the absorber components. For safety evaluation, the standard requires analyzing potential performance degradation due to physical or chemical changes, radiation damage, and depletion. The evaluation must consider credible adverse conditions such as fires, flooding, and mechanical impacts. Calculations must be validated against applicable experimental data or benchmark experiments.
Testing methods
The standard outlines verification and inspection procedures rather than specific laboratory tests. It requires in-service verification to confirm the continued integrity and positioning of the neutron absorber system. Testing methods may include neutron measurement techniques, non-destructive examination, or chemical analysis, calibrated to national standards.
FAQs
What products and facilities are regulated under GB 15146.10-2001?
This standard applies to the design, construction, and operation of facilities that handle, process, or store fissile materials outside reactors, as well as equipment related to the transportation of such materials. It specifically regulates the use of fixed neutron absorbers.
How does GB 15146.10-2001 relate to international standards?
The standard is technically equivalent to the American standard ANSI/ANS-8.21-1995 but adjusts the structure and replaces referenced standards with corresponding Chinese standards, such as GB 15146.1 and GB 15146.2.
Are the requirements in GB 15146.10-2001 mandatory?
Most clauses are mandatory, particularly those concerning design, safety evaluation, and verification. However, clauses 7.1.2 and 7.1.3 regarding specific measurement and calibration methods are recommended. Compliance with the mandatory sections is legally required for applicable nuclear facilities in China.
The summary above provides a high-level overview of GB 15146.10-2001. To ensure complete compliance for your products and facilities entering the Chinese nuclear market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 15146.10-2001 today to access all detailed parameters, administrative requirements, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- F09
- ICS
- 27.120.30
- Competent department
- State Administration of Science, Technology and Industry for National Defense
- Technical committee
- State Administration of Science, Technology and Industry for National Defense