IEC 61340-4-4:2012 静电 - 第4-4部分:特定应用的标准测试方法 - 柔性中间散装容器的静电分类（纤维）
标准编号：IEC 61340-4-4:2012
中文名称：静电 - 第4-4部分:特定应用的标准测试方法 - 柔性中间散装容器的静电分类（纤维）
英文名称：Electrostatics - Part 4-4: Standard test methods for specific applications - Electrostatic classification of flexible intermediate bulk containers (FIBC)
发布日期：2012-01-18
标准范围
IEC 61340-4-4:20 12规定了用于危险爆炸性环境的体积在0.25 m3和3 m3之间的柔性中型散货箱（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之外。要求包括:-FIBC的分类和标签；-内衬的分类；-每种类型的FIBC和内衬的测试方法规范；-FIBC和内衬的设计和性能要求；-在为爆炸危险环境定义的不同区域内安全使用FIBC（包括具有内衬的那些），针对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）进行了描述；-FIBC型式鉴定和认证程序，包括内衬的安全使用。本标准的要求适用于所有类型的FIBC和内衬，在使用前进行制造测试，旨在用于危险爆炸性环境:1区和2区（仅限IIA和IIB组）以及21区和22区。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 μ A的危险爆炸性环境中的使用。符合本标准规定的要求并不一定能确保FIBC中的内容物不会产生危险的静电放电，例如锥形放电。遵守本标准的要求并不减轻全面风险评估的需要。例如，金属和其它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来自粉末的危险放电。本标准中包含的测试方法可以与其他性能要求结合使用，例如当风险评估显示相关的最小点火能量小于0.14 mJ、充电电流大于3.0 μ A或环境条件超出本标准中规定的范围时。符合本标准规定的要求并不一定保证在正常使用过程中FIBC不会对人员造成电击。第二版取消并取代了2005年出版的第一版，构成了技术修订。与第一版相比的主要变化如下:a)采用基于A、B、C和D四种类型的FIBC类型分类系统。b)与IEC 60079中定义的危险区域和危险区域相关的FIBC安全使用指南-增加了10-1和IEC 60079-10-2。c)对可接地点的电阻和FIBC上的电气击穿电压测量应仅在低湿度下测量。d)更改FIBC标签要求，以提高最终用户的清晰度和识别便利性。e)增加了与FIBC结合使用内衬的分类、性能要求和安全使用指南。f)增加了一个信息性附件，为质量控制和检验测试的测试方法提供了指导。
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.
标准预览图
