BS ISO 10294-5-2005 PDF

Full title and description

STB BS ISO 10294-5-2005 — Fire-resistance tests — Fire dampers for air distribution systems — Part 5: Intumescent fire dampers. This designation refers to the British adoption (BS ISO) of ISO 10294‑5:2005 and covers the specific test requirements and additional checks needed for intumescent (expandable) fire dampers used in air distribution systems.

Abstract

ISO 10294‑5:2005 specifies the adaptations to the general fire‑damper test method (ISO 10294‑1) that are needed to assess intumescent fire dampers. It identifies additional tests to evaluate operational reliability and performance when intumescent materials, rather than mechanical closing elements alone, are relied on to achieve integrity/insulation performance (EI classification). The standard notes that intumescent dampers alone cannot achieve the "S" (ambient leakage) classification without a mechanical damper component.

General information

• Status: Withdrawn according to the ISO bibliographic record (original ISO edition shown as withdrawn in the ISO lifecycle).
• Publication date: ISO publication March 2005 (edition 1, 2005); adopted as BS ISO 10294‑5:2005 (British publication listed April 2005).
• Publisher: International Organization for Standardization (ISO); published/adopted as a British Standard by BSI (BS ISO 10294‑5:2005).
• ICS / categories: 13.220.50 (Fire‑resistance of building materials and elements); 91.140.30 (Ventilation and air‑conditioning systems).
• Edition / version: Edition 1 (2005).
• Number of pages: ISO bibliographic entry lists 24 pages for the ISO edition; some national/BS listings show a 32‑page BSI print product (format/print differences between publishers).

Scope

The standard applies test modifications to the general fire‑damper test method so it can be used for intumescent fire dampers. It defines the additional procedures necessary to assess the expansion behaviour, sealing performance and operational reliability of intumescent elements when exposed to fire conditions, and it clarifies how the test results are used for classification (EI performance in accordance with ISO 10294‑2). The document highlights that intumescent solutions, without a mechanical damper, do not meet the ambient leakage (S) classification.

Key topics and requirements

• Adaptation of the general fire‑damper test method (ISO 10294‑1) to intumescent dampers, including specific specimen preparation and mounting arrangements.
• Additional tests to assess intumescent material behaviour: expansion/activation timing, sealing of openings, and sustained integrity/insulation under fire exposure.
• Operational reliability tests to confirm that the intumescent element will perform over expected service conditions.
• Classification intent: results are used to classify as EI dampers per the ISO 10294 series; explicit note that S (ambient leakage) classification requires a mechanical component.
• Reference and cross‑linking to other parts of the ISO 10294 series for full test methodology and classification rules.

Typical use and users

Used by fire‑safety engineers, HVAC and ductwork manufacturers, test houses and laboratories performing fire‑resistance testing, building code and compliance bodies, and product development teams designing intumescent fire damper solutions. National standards bodies and procurement organizations may also reference the document when specifying test criteria for intumescent dampers.

Related standards

ISO 10294 is a multi‑part series. Relevant related parts and replacements include ISO 10294‑1 (test method — historically the base method for dampers) and ISO 10294‑2 (classification and criteria), some of which have later been superseded or revised (for example ISO 21925‑1:2018 replaces/revises aspects of the series for mechanical dampers). Users should check the current status of related parts and any successor standards for up‑to‑date test and classification rules.

Keywords

fire resistance; fire dampers; intumescent dampers; air distribution systems; EI classification; fire testing; HVAC; leakage; operational reliability.

FAQ

Q: What is this standard?

A: ISO 10294‑5:2005 (published/adopted as BS ISO 10294‑5:2005) is the part of the ISO 10294 series that specifies test adaptations and additional checks for intumescent fire dampers used in air distribution systems.

Q: What does it cover?

A: It covers the special test arrangements, procedural adaptations and additional operational‑reliability assessments required when the fire‑sealing function relies on intumescent (expandable) materials rather than solely on mechanical closing elements; results are intended for EI classification under the ISO 10294 classification rules.

Q: Who typically uses it?

A: Test laboratories, fire‑safety and HVAC engineers, manufacturers of fire dampers and building compliance authorities use the standard to define and perform fire tests and to interpret test outcomes for product classification and specification.

Q: Is it current or superseded?

A: The ISO bibliographic record indicates this part is withdrawn; parts of the ISO 10294 series have been reviewed and some parts superseded or replaced (for example by ISO 21925‑1:2018 for mechanical dampers). Users should verify the current, authoritative status with ISO or their national standards body before relying on the standard for certification or regulatory compliance.

Q: Is it part of a series?

A: Yes — ISO 10294 is a multi‑part series covering fire‑resistance tests, classification and specific test parts for different damper types (mechanical, intumescent, thermal release mechanisms, etc.). See parts 1, 2, 4 and related items in the series for full context and classification rules.

Q: What are the key keywords?

A: Fire dampers; intumescent; fire resistance; EI classification; air distribution; HVAC; fire testing; operational reliability.