ISO 8421-2:1987

Overview

ISO 8421-2:1987 is the International Organization for Standardization vocabulary for structural fire protection. Published by ISO/TC 21 (Equipment for fire protection and fire fighting) in March 1987, this part of ISO 8421 provides clear English definitions of terms used in building and structural fire safety, with a French alphabetical index. It is a terminology standard - not a performance or testing specification - intended to harmonize language used by engineers, architects, regulators and emergency services.

Key facts:

• Part of the ISO 8421 series (vocabulary for fire protection).
• Terms are listed in English alphabetical order; a French index is included.
• General fire terms and phenomena are covered in ISO 8421-1.
• Numbering uses an initial “2” to denote Part 2.

Key Topics

This vocabulary standard defines concepts central to structural fire protection and building fire safety planning. Examples from the standard include:

• Containment elements: terms such as fire compartment, fire stop (cloison de recoupement), and bund/dyke (muret de rétention) for controlling spread and leakage.
• Openings and closures: damper, fire damper, safety curtain (rideau de sécurité).
• Access and egress elements: fire-fighting access, fire lift (ascenseur prioritaire sapeurs pompiers), fire lift switch.
• Stairway classifications: stairway, protected, enclosed, external, fire-fighting, lobby approach and accommodation stairway.
• External protection: roof resistant to external fire exposure and thermal radiation screen.
• Site drainage and containment: catchpit (cuvette de rétention).

Note: As a vocabulary document, ISO 8421-2 sets definitions and usage rather than prescriptive technical requirements or test methods.

Applications

ISO 8421-2 is practical for professionals and organizations who need consistent, internationally recognized terminology:

• Fire safety engineers & consultants - for reports, risk assessments and design documentation.
• Architects and structural engineers - to specify and coordinate fire protection measures in building designs.
• Code writers and regulators - to harmonize language in fire safety codes, standards and legislation.
• Manufacturers and suppliers - to label products (e.g., dampers, fire doors) consistently in specifications and datasheets.
• Emergency services and facility managers - to improve clarity in operational procedures, plans and training.

Using ISO 8421-2 helps avoid ambiguity in contracts, design documents, test reports and international communication.

Related Standards

• ISO 8421-1 - Fire protection - Vocabulary - Part 1: General terms and phenomena of fire.
• Other parts of the ISO 8421 series cover detection, alarm, smoke control, evacuation, suppression and rescue terminology (Parts 3–8).

Keywords: ISO 8421-2:1987, structural fire protection vocabulary, fire protection terminology, fire compartment, fire stop, fire damper, fire lift, fire-fighting access.