标准摘要
[中文适用范围]： IEC 61340 的这一部分规定了用于危险爆炸性环境中体积在 0@25 m3 至 3 m3 之间的柔性中型散装容器 (FIBC) 的要求。爆炸性环境可能由 FIBC 中的内容物产生，也可能存在于 FIBC 外部。要求包括： - FIBC 的分类和标签； ——内衬的分类； ——每种类型集装袋和内衬的测试方法规范； ——集装袋和内衬的设计和性能要求； - 在爆炸危险环境@定义的不同区域内安全使用集装袋（包括带有内衬的集装袋），描述了存在或可能存在可燃粉尘的区域（IEC 60079-10-2）@和爆炸性气体环境（IEC 60079-10-1）； - FIBC@ 型式鉴定和认证程序，包括内衬的安全使用。注 1：附录 C 给出了可用于制造质量控制的测试方法指南。本标准的要求适用于所有类型的 FIBC 和内衬@在使用前按制造时进行测试@并打算用于危险爆炸物环境： 1 区和 2 区（仅限 IIA 和 IIB 组）以及 21 区和 22 区（危险区域和爆炸组的分类见附件 D）。对于某些类型的 FIBC@，本标准的要求仅适用于最小点火能量为 0@14 mJ 或更大且充电电流不超过 3@0 µA 的危险爆炸性环境。注 2：0@14 mJ 是典型 IIB 族气体或蒸气的最小点火能量。尽管存在更敏感的材料，但 0@14 mJ 是 FIBC 清空时可能存在的任何材料的最低点火能量。 3@0 µA 是常见工业过程中可能出现的最高充电电流。最小点火能量和充电电流的这种组合代表了实践中可能预期的最严酷的条件。符合本标准规定的要求并不一定确保 FIBC 中的内容物不会产生危险的静电放电@，例如锥形放电@。附件 E 中给出了与锥体排放相关的风险信息。遵守本标准的要求并不能减轻全面风险评估的需要。例如，金属和其他导电粉末以及调色剂粉末可能需要额外的预防措施，以防止粉末产生危险放电。注 3：在上段提到的示例中，如果是金属或其他导电粉末，则可能需要采取额外的预防措施，因为如果粉末被隔离并带电，可能会产生燃烧火花，如果是墨粉，则可能会发生燃烧放电可能发生在快速填充和排空操作期间。未来的 IEC/TS 60079-32 [1]1 提供了有关可能需要的额外预防措施的指导。本标准中包含的测试方法可与其他性能要求结合使用@例如，当风险评估显示关注的最小点火能量小于0@14 mJ@充电电流大于3@0 ??@或环境条件超出本标准规定的范围。符合本标准规定的要求并不一定保证集装袋在正常使用过程中不会造成人员触电。 1 方括号中的数字指的是参考书目。 [外文原描述]： IEC 61340-4-4:2012 specifies requirements for flexible intermediate bulk containers (FIBC) between 0,25 m3 and 3 m3 in volume, intended for use in hazardous explosive atmospheres. The explosive atmosphere may be created by the contents in the FIBC or may exist outside the FIBC. The requirements include: - classification and labelling of FIBC; - classification of inner liners; - specification of test methods for each type of FIBC and inner liner; - design and performance requirements for FIBC and inner liners; - safe use of FIBC (including those with inner liners) within different zones defined for explosion endangered environments, described for areas where combustible dusts are, or may be, present (IEC 60079-10-2), and for explosive gas atmospheres (IEC 60079-10-1); - procedures for type qualification and certification of FIBC, including the safe use of inner liners. The requirements of this standard are applicable to all types of FIBC and inner liners, tested as manufactured, prior to use and intended for use in hazardous explosive atmospheres: Zones 1 and 2 (Groups IIA and IIB only) and Zones 21 and 22. For some types of FIBC, the requirements of this standard apply only to use in hazardous explosive atmospheres with minimum ignition energy of 0,14 mJ or greater and where charging currents do not exceed 3,0 μA. Compliance with the requirements specified in this standard does not necessarily ensure that hazardous electrostatic discharges, e.g. cone discharges, will not be generated by the contents in FIBC. Compliance with the requirements of this standard does not mitigate the need for full risk assessment. For example, metal and other conductive powders and toner powders may require additional precautions to prevent hazardous discharges from the powders. Test methods included in this standard may be used in association with other performance requirements, for example when a risk assessment has shown the minimum ignition energy of concern is less than 0,14 mJ, charging currents are greater than 3,0 μA, or the ambient conditions are outside of the range specified in this standard. Compliance with the requirements specified in this standard does not necessarily ensure that electric shocks to personnel will not occur from FIBC during normal use. This second edition cancels and replaces the first edition, published in 2005, and constitutes a technical revision. The main changes with respect to the first edition are listed below: a) Adoption of a type classification system for FIBC based on four types: A, B, C and D. b) Guidance for safe use of FIBC in relation to hazardous areas and hazardous zones defined in IEC 60079-10-1 and IEC 60079-10-2 is added. c) Resistance to groundable points and electrical breakdown voltage measurements on FIBC shall be measured at low humidity only. d) Requirements for labelling FIBC are changed to improve clarity and ease of recognition by end users. e) Classification, performance requirements and guidance for safe use of inner liners in combination with FIBC are added. f) An informative annex giving guidance on test methods for quality control and inspection testing is added.
英文名称Electrostatics - Part 4-4: Standard test methods for specific applications - Electrostatic classification of flexible intermediate bulk containers (FIBC)