ISO 6184-1-1985 PDF

Full title and description

ISO 6184-1:1985 — Explosion protection systems — Part 1: Determination of explosion indices of combustible dusts in air. This part specifies a laboratory test method for determining explosion indices of combustible dusts suspended in air inside a closed volume and gives criteria for correlating results from other procedures to the values obtained by the specified method.

Abstract

Specifies a test method to determine explosion indices of combustible dusts in air for confined explosions; provides criteria for correlating results from alternative test procedures and notes limitations (it does not address ignition conditions of reactants and absence of ignition in the test does not imply a dust is non‑explosive).

General information

• Status: Published (International Standard, confirmed).
• Publication date: November 1985 (Edition 1, 1985-11).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 13.230 — Explosion protection.
• Edition / version: Edition 1 (1985).
• Number of pages: 5.

Scope

This part of ISO 6184 applies to test methods used to determine explosion indices associated with confined dust/air explosions following ignition of combustible dust suspensions in a closed volume. It defines the quantities to be measured, the test arrangement and conditions needed to obtain reproducible indices, and criteria for correlating other test methods to the quantities specified. It does not address ignition characteristics of reactants or broader dust hazard assessments outside the enclosed‑volume test context.

Key topics and requirements

• Definition and measurement of explosion indices for combustible dusts in air (as determined in a closed volume test apparatus).
• Specified test apparatus, test preparation and operating conditions to ensure reproducible results.
• Procedures for recording and calculating the relevant explosion quantities and indices.
• Criteria to correlate and interpret results from alternative test methods against the values produced by this method.
• Notes on limitations: absence of ignition in this test does not prove a material cannot explode under other conditions.

Typical use and users

Used by industrial safety engineers, testing and certification laboratories, explosion protection system designers, process safety specialists and regulatory compliance teams in industries handling combustible powders (food processing, grain handling, chemical, pharmaceutical, metal powders, etc.) for hazard assessment, equipment design and verification of protective measures.

Related standards

ISO 6184 is a multipart series on explosion protection systems. Related parts include ISO 6184-2:1985 (determination of explosion indices of combustible gases in air), ISO 6184-3:1985 (determination of explosion indices of fuel/air mixtures other than dust/air and gas/air) and ISO 6184-4:1985 (determination of efficacy of explosion suppression systems). These companion parts cover analogous test methods for different fuel types and evaluation of suppression measures.

Keywords

explosion indices, combustible dusts, dust explosion testing, explosion protection, confined explosion, ISO 6184, process safety

FAQ

Q: What is this standard?

A: ISO 6184-1:1985 is an ISO International Standard that specifies a laboratory test method to determine explosion indices of combustible dusts suspended in air in a closed volume (part of the ISO 6184 series on explosion protection).

Q: What does it cover?

A: It covers the test arrangement, measurement and calculation procedures for explosion indices derived from confined dust/air ignition tests, and provides criteria to correlate other test methods to the quantities determined by this method. It does not cover ignition‑condition indices or broader risk‑assessment practices.

Q: Who typically uses it?

A: Safety engineers, testing laboratories, process and plant designers, and regulatory or compliance personnel in industries that handle combustible powders use this standard for hazard evaluation and design of protective systems.

Q: Is it current or superseded?

A: The original publication date is November 1985. This edition was reviewed and confirmed in ISO's systematic review process (last confirmation recorded in 2021), and the 1985 edition remains the current confirmed version.

Q: Is it part of a series?

A: Yes — ISO 6184 is a multipart series addressing explosion protection systems; other parts cover gases, other fuel/air mixtures and evaluation of suppression system efficacy (for example ISO 6184-2, -3 and -4, all published in 1985).

Q: What are the key keywords?

A: Explosion indices; combustible dust; dust explosions; explosion protection; confined test; ISO 6184; process safety.