Overview
ISO/TS 15791-2:2022 - Plastics - Development and use of intermediate-scale fire tests for plastics products - Part 2: Use of intermediate-scale tests for semi-finished and finished products provides guidance and requirements for designing and using intermediate-scale fire tests for semi‑finished and finished plastic products. The Technical Specification covers typical applications, methods for preparation and mounting of test specimens, orientations (horizontal or vertical), and the parameters to be measured, reporting expectations and how results can be used either for direct product assessment or as input for scaling studies.
Key topics and technical requirements
- Scope and applicability: Applies to planar, linear and profiled plastics products and to specimens tested in end‑use configurations where practical.
- Specimen preparation & mounting: Guidance for finished products, substrates, backing boards, joints, fixing methods and recommended air‑gap arrangements. Annex A addresses preparation relevant to end‑use conditions.
- Measured parameters & reporting: Defines which product parameters to capture (e.g., ignitability, flame spread, flaming debris, deformation) and how test results should be reported for reproducibility and use in comparative assessments or scaling.
- Test orientations and phenomena: Guidance for horizontal and vertical testing, including handling melting/slumping of thermoplastics, intumescence, specimen collapse and flaming debris management.
- Applications of intermediate‑scale tests: Use as pre‑selection tests during product development and as end‑product tests when end‑use mounting can be reproduced. The specification also highlights limitations (effluent, cost, restricted scenario range).
- Normative references: Integrates principles from ISO 10840, ISO 13943 and references such as ISO 14697 and ISO 30021 for related test choice and substrate guidance.
Practical applications and users
ISO/TS 15791-2:2022 is intended for:
- Manufacturers of semi‑finished and finished plastic products (boards, profiled sections, composites, pipe insulation, glazing elements) for product development, production control and quality assurance.
- Test laboratories developing intermediate‑scale fire procedures or reporting fire performance data.
- Regulators and specifiers using intermediate‑scale data for regulatory assessment or as input to larger‑scale fire performance evaluations.
- R&D teams performing material selection, pre‑selection screening, or scaling studies to predict large‑scale behaviour.
Practical benefits include more representative fire behaviour than small‑scale tests, ability to include end‑use fixings and joints, and improved evaluation of flame spread and real‑world phenomena.
Related standards
Keywords: ISO/TS 15791-2:2022, intermediate-scale fire tests, plastics, semi-finished products, finished products, specimen mounting, flame spread, reaction-to-fire, scaling studies.