Overview
ISO/TR 16732-2:2012, Fire Safety Engineering - Fire Risk Assessment - Part 2: Example of an Office Building, published by the International Organization for Standardization (ISO), provides a comprehensive application example of the fire risk assessment framework outlined in ISO 16732-1. Targeting fire safety engineering professionals, building designers, and risk assessors, this Technical Report illustrates a step-by-step fire risk assessment of a 40-storey office building. The document serves as a practical guide for implementing standardized fire risk assessment methodologies, supporting policy analysis, code compliance, and design evaluations in office buildings.
Key Topics
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Fire Risk Assessment Procedure
The document walks through the key steps in the fire risk assessment process, including:
- Establishing the assessment context and objectives
- Identifying and specifying representative fire scenarios
- Estimating the probability of different fire scenarios (smouldering, non-flashover, flashover)
- Evaluating consequences: life safety, property damage, and business continuity
- Calculating scenario risks and combined fire risk metrics
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Design Option Comparison
Several fire protection design options are examined, typically varying by fire resistance rating (FRR), the presence and reliability of sprinkler systems, and inclusion of a refuge area for occupants with limited mobility.
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Use of Statistical and Deterministic Models
The report describes how technical models, fire statistics, and engineering judgment are applied to estimate probability, assess consequences, and model occupant evacuation and toxic exposure.
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Risk Evaluation and Acceptance Criteria
Results are analyzed against code-compliant baseline building designs, using metrics like expected risk to life (ERL) and fire cost expectation (FCE) for comparison and decision-making.
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Societal vs. Individual Risk
The approach emphasizes societal risk analysis, suitable for policymakers and organizations considering fire safety for groups of similar buildings.
Applications
ISO/TR 16732-2:2012 is valuable for a variety of practical applications in fire safety and building management:
- Building Design and Code Compliance
Use for performance-based fire safety design to ensure proposed alternatives meet or exceed safety requirements compared to standard codes (e.g., National Building Code compliance).
- Risk-Based Decision-Making
Supports informed selection of fire protection measures and investments by comparing design options in terms of risk reduction and cost-effectiveness.
- Policy and Regulatory Analysis
Guides authorities and consultants in evaluating the potential impact of alternative fire safety policies, especially for large classes of office properties.
- Emergency Planning and Management
Assists in identifying critical scenarios and evacuation considerations for office buildings, enhancing occupant safety planning.
- Standardization and Best Practices
Promotes consistent application of fire risk assessment across projects, supporting harmonization and international best practices in fire safety engineering.
Related Standards
- ISO 16732-1:2012 – Fire Safety Engineering – Fire Risk Assessment – Part 1: General
The foundational standard detailing the methodology ISO/TR 16732-2 applies.
- ISO/TR 16732-3:2012 – Fire Safety Engineering – Fire Risk Assessment – Part 3: Example of an Industrial Property
A complementary example applying the same risk assessment principles to an industrial setting.
- ISO/TC 92 Standards – Fire Safety
Includes related standards on fire safety terminology, system performance, and fire protection engineering.
By providing a detailed real-world example, ISO/TR 16732-2:2012 helps bridge theory and practice in fire risk assessment for office buildings. It is widely referenced by fire safety engineers, regulators, and building owners seeking to implement risk-based fire safety strategies in compliance with international standards.