IEC 61340-4-4:2018 PDF
Electrostatics - Part 4-4: Standard test methods for specific applications - Electrostatic classification of flexible intermediate bulk containers (FIBC)
Electrostatics - Part 4-4: Standard test methods for specific applications - Electrostatic classification of flexible intermediate bulk containers (FIBC)
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 145
- Дата публикации:
- 30 января 2018 г.
- Издание:
- IEC IS 61340 edition 3 version 1
- ICS:
- 17.220.99
IEC 61340-4-4:2018 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 can be created by the contents in the FIBC or can 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, inner liner, labels and document pockets; – design and performance requirements for FIBC, inner liners, labels and document pockets; – 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 can 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. This third edition cancels and replaces the second edition, published in 2012, and Amendment 1:2014. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) in light of experimental evidence, the maximum resistance to ground limit for Type C FIBC, and corresponding resistance limits for inner liners used in Type C FIBC has been increased from 10 M ohms to 100 M ohms; b) the classification of Type L1 inner liners has been revised and extended to include Type L1C inner liners made from multi-layer materials with a conductive internal layer; c) a labelling requirement to include a reference to IEC TS 60079-32-1 for guidance on earthing has been added.
Abstract
Overview
IEC 61340-4-4:2018 - "Electrostatics - Part 4-4: Electrostatic classification of flexible intermediate bulk containers (FIBC)" defines electrostatic safety, test methods and classification for FIBC (0.25 m3 to 3 m3) intended for use in hazardous explosive atmospheres. The standard covers FIBC bodies, inner liners, labels and document pockets, and specifies test procedures, design/performance requirements, labelling and type qualification/certification. It also gives guidance for safe use in zones defined for combustible dusts (IEC 60079-10-2) and explosive gas atmospheres (IEC 60079-10-1).
Key topics and requirements
- Scope and classification: Defines FIBC types (Type A, B, C, D) and inner liner types (L1, L1C, L2, L3) based on electrostatic behaviour and construction.
- Test methods: Standardised procedures for electrical breakdown voltage, ignition testing, surface resistivity, and resistance to a groundable point; sampling, conditioning and detailed test reporting requirements are included.
- Design & performance: Requirements for construction, conductive elements, and insulating layers of liners and labels to mitigate electrostatic risks.
- Labelling: Mandatory classification and marking requirements for FIBC; a new labelling requirement references IEC TS 60079-32-1 for earthing guidance.
- Safe use & zones: Guidance for permitted combinations of FIBC and inner liners within explosion-hazard zones and for environments with combustible dust or flammable gases.
- Type qualification & certification: Procedures for factory testing, type qualification and certification, including provisions for inner liners.
- Significant 2018 changes:
- Resistance-to-ground limit for Type C FIBC (and corresponding inner liners) increased from 10 MΩ to 100 MΩ.
- Classification extended to Type L1C inner liners with conductive internal layers.
- Labelling must reference IEC TS 60079-32-1 for earthing guidance.
Applications
- Selection, specification and procurement of FIBC for use where contents or external atmosphere may form explosive mixtures (chemical, pharmaceutical, food, mining, agriculture, plastics).
- Design and manufacture of FIBC, inner liners, labels and document pockets to meet electrostatic safety requirements.
- Testing laboratories and certification bodies performing type qualification, ignition and electrical tests.
- Health & safety, process and plant engineers implementing safe handling, earthing/grounding and storage procedures for bulk bags in hazardous areas.
Who should use this standard
- FIBC manufacturers and designers
- Third‑party testing and certification bodies
- Occupational safety and process engineers
- Regulatory authorities and procurement teams specifying bulk packaging for hazardous atmospheres
Related standards
- IEC 60079-10-1 (flammable gas zone classification)
- IEC 60079-10-2 (combustible dust zone classification)
- IEC TS 60079-32-1 (guidance on earthing of electrostatic hazards)
Keywords: IEC 61340-4-4, FIBC, electrostatics, electrostatic classification, inner liner, ignition testing, resistance to ground, hazardous explosive atmospheres, earthing, IEC 60079.
Технические детали
- Технический комитет
- TC 101 - Electrostatics
- SKU
- IEC 61340-4-4:2018
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