IEC 61340-4-4-2018 PDF

Full title and description

St IEC 61340-4-4-2018 — Electrostatics - Part 4-4: Standard test methods for specific applications — Electrostatic classification of flexible intermediate bulk containers (FIBC). This standard specifies classification, test methods, labelling, design and performance requirements, and safe-use guidance for FIBC (approximately 0,25 m3 to 3 m3) intended for use in potentially explosive atmospheres.

Abstract

IEC 61340-4-4:2018 provides standardized procedures to assess electrostatic behaviour and ignition risk of flexible intermediate bulk containers and their inner liners, labels and document pockets. It defines FIBC types (A, B, C, D), inner-liner classifications (L1, L1C, L2, L3), required tests (electrical breakdown, surface resistivity, resistance-to-groundable-point, ignition testing), labelling and documentation rules, and type-qualification/certification processes. The standard also gives guidance for safe use in zones defined by IEC 60079-10-1 and IEC 60079-10-2.

General information

• Status: Published / Current (third edition, revised).
• Publication date: 30 January 2018 (IEC publication date; national transpositions published April–May 2018).
• Publisher: International Electrotechnical Commission (IEC).
• ICS / categories: 17.220.99; 29.020; 55.080 (electrostatics; electrical engineering; sacks/bags).
• Edition / version: Edition 3.0 (2018).
• Number of pages: IEC webstore lists 97 pages for the IEC publication; some national/adopted versions and catalogs list 54–56 pages (differences arise between IEC master document and regional publication formats).

Scope

The standard applies to flexible intermediate bulk containers (FIBC) with volumes between 0,25 m3 and 3 m3 that are intended for use where an explosive atmosphere may be created by the FIBC contents or exist outside the FIBC. It covers classification and labelling of FIBC and inner liners, test methods specific to each FIBC and accessory (labels, document pockets), design and performance requirements, safe-use guidance in hazardous zones (combustible dust and explosive gas atmospheres), and procedures for type qualification and certification.

Key topics and requirements

• FIBC classification system (Types A, B, C, D) and corresponding labelling requirements.
• Inner-liner classification (L1, L1C, L2, L3) and rules for liners used inside FIBC.
• Standardized test methods: electrical breakdown/strength, surface resistivity, resistance to a groundable point, ignition testing and sampling/conditioning procedures.
• Design and performance requirements for FIBC bodies, inner liners, labels and document pockets, including designated earthing/grounding points where applicable.
• Operational and safe-use guidance tied to hazardous-area classification standards (IEC 60079-10-1, IEC 60079-10-2) and earthing guidance (reference to IEC TS 60079-32-1).
• Notable technical update in the 2018 edition: the maximum resistance-to-ground limit for Type C FIBC (and corresponding inner liners) was raised from 10 MΩ to 100 MΩ; labelling and inner-liner classification were revised.

Typical use and users

Primary users include FIBC manufacturers (design and quality control), third‑party testing and certification laboratories, process safety and EHS engineers in chemical, pharmaceutical, food, mining and bulk‑handling industries, logistics and storage operators handling combustible or flammable powders and granules, and regulators or compliance teams evaluating safe packaging for explosive atmospheres. Testing/QA teams use the test methods for type-qualification and routine quality checks.

Related standards

Commonly cross‑referenced standards include IEC 60079-10-1 and IEC 60079-10-2 (area classification for gas and dust hazardous zones), IEC TS 60079-32-1 (guidance on earthing), IEC 61340 series test parts (for material resistivity and measurement methods such as IEC 61340-2-1 and IEC 61340-2-3), IEC 60243-1 (dielectric strength test methods), and ISO/EN standards on FIBC general requirements (for example ISO 21898/EN ISO 21898). Regional transpositions exist as EN IEC 61340-4-4:2018 / national adoptions.

Keywords

FIBC, flexible intermediate bulk container, electrostatics, electrostatic classification, inner liner, ignition testing, resistance to ground, surface resistivity, hazardous area, IEC 61340, earthing, labelling, type qualification.

FAQ

Q: What is this standard?

A: IEC 61340-4-4:2018 is an IEC international standard that defines electrostatic classification, test methods, labelling and safe‑use guidance for flexible intermediate bulk containers (FIBC) used where explosive atmospheres from contents or surroundings may be present.

Q: What does it cover?

A: It covers classification of FIBC and inner liners, detailed test procedures (electrical breakdown, surface resistivity, resistance to groundable points, ignition testing), design and performance requirements for FIBC and accessories, labelling, sampling/conditioning and procedures for type qualification and certification, plus guidance on safe use in zones defined by IEC 60079-10-1 and IEC 60079-10-2.

Q: Who typically uses it?

A: FIBC manufacturers, testing/certification laboratories, process safety and EHS engineers, supply‑chain/logistics operators handling combustible/flammable powders, and regulatory/compliance personnel.

Q: Is it current or superseded?

A: The 2018 edition is the current third edition (published January 30, 2018 by IEC) and supersedes the 2012 edition and its 2014 amendment. Users should check national adoption publications for regional status and any later amendments.

Q: Is it part of a series?

A: Yes — it is Part 4‑4 of the IEC 61340 series on electrostatics (which includes basic measurement and test methods parts such as IEC 61340-2-x and application parts). It also cross‑references several IEC standards on hazardous areas (IEC 60079 series) and related test methods.

Q: What are the key keywords?

A: FIBC, electrostatic classification, inner liner, ignition testing, resistance to ground, surface resistivity, hazardous atmosphere, earthing, labelling, type qualification.