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'''SFPE''' is the Society of Fire Protection Engineers, a professional organisation associated with the development and dissemination of fire-engineering knowledge. Its handbooks and engineering guides address fire dynamics, design methods, uncertainty and professional practice. These resources support engineering analysis but do not replace project-specific judgement or regulatory approval.<ref name="SFPE-iii">DiNenno (2002), pp. iii–iv.</ref><ref name="IFEG-0-3-2">Australian Building Codes Board et al. (2005), p. 0.3-2.</ref>
'''SFPE''', the Society of Fire Protection Engineers, is an organisation in the United States that represents fire protection engineers.<ref name="NIST-201">National Institute of Standards and Technology (2005), p. 201.</ref> It is based in Bethesda, Maryland.<ref name="DiNenno-iii">DiNenno et al. (2002), pp. iii–iv.</ref> The International Fire Engineering Guidelines (IFEG, 2005) list SFPE among the organisations that publish and provide knowledge for fire engineering.<ref name="IFEG-US-05">National Research Council of Canada et al. (2005), Part 0 (United States), pp. 0.5-6–0.5-10.</ref> Its publications include the ''SFPE Handbook of Fire Protection Engineering'', engineering guides on subjects such as performance-based design, and engineering standards such as one on calculating fire exposures to structures.<ref name="DiNenno-iii" /><ref name="Notarianni-42">Notarianni (2002), p. 5-42.</ref><ref name="ABCB-B1">Australian Building Codes Board (2020a), Data Sheet B1, p. 12.</ref>


The third edition of the SFPE Handbook identifies SFPE as copyright owner and the National Fire Protection Association as publisher. Its editorial structure brings together specialists in fundamentals, hazard calculations, design calculations, risk analysis and related subjects. That collaboration illustrates the breadth of the discipline.<ref name="SFPE-iii" />
SFPE has also developed a Canon of Ethics for Fire Protection Engineers, to which the IFEG refer for professional issues outside their own scope.<ref name="IFEG-US-01">National Research Council of Canada et al. (2005), Part 0 (United States), pp. 0.1-1–0.1-4.</ref> Its publications are used well beyond the United States. In New Zealand, Verification Method C/VM2 (second edition, 2025) refers to the SFPE Handbook for evacuation calculations.<ref name="MBIE-26">Ministry of Business, Innovation and Employment (2025b), pp. 26, 33.</ref> In Australia, the 2020 handbook for the Fire Safety Verification Method cites SFPE engineering standards.<ref name="ABCB-H">Australian Building Codes Board (2020b), pp. 109, 113.</ref> SFPE is a separate body from the National Fire Protection Association, which publishes the SFPE Handbook and develops codes and standards of its own.<ref name="DiNenno-iii" /><ref name="Iqbal-E1">Iqbal and Salley (2004), p. E-1.</ref>


SFPE guidance is used by engineers, reviewers and researchers in different regulatory contexts. Its methods must still be checked against the actual scenario and the applicable jurisdiction. A handbook correlation or design guide is not automatically a legal compliance route.<ref name="NUREG-1-1">U.S. Nuclear Regulatory Commission (2005), pp. 1-1–1-2.</ref><ref name="CVM2-7">Ministry of Business, Innovation and Employment (2025), pp. 7–9.</ref>
== Fire protection engineering and the society ==


== Role in fire engineering ==
SFPE describes fire protection engineering as the application of science and engineering principles to protect people and their environment from destructive fire.<ref name="IFEG-US-03">National Research Council of Canada et al. (2005), Part 0 (United States), pp. 0.3-1–0.3-2.</ref> In this description the field includes the analysis of fire hazards. It also covers reducing fire damage through the design, construction, arrangement and use of buildings, materials, structures, industrial processes and transport systems.<ref name="IFEG-US-03" /> A third part is the design, installation and maintenance of fire detection, suppression and communication systems, and a fourth is investigation and analysis after a fire.<ref name="IFEG-US-03" /> In the SFPE wording, a fire protection engineer knows through education, training and experience how fires start and spread, and how they can be detected, controlled or extinguished.<ref name="IFEG-US-03" /> Such an engineer can also anticipate how materials, structures and processes behave in fire.<ref name="IFEG-US-03" />


[[Fire safety engineering]] applies engineering principles and expert judgement to fire phenomena and human response. SFPE resources provide a technical basis for parts of that work, including physical models, data and design processes. They help make analyses more systematic and reviewable.<ref name="IFEG-0-3-1">Australian Building Codes Board et al. (2005), pp. 0.3-1–0.3-2.</ref><ref name="NUREG-1-1" />
The term "fire protection engineer" is common in the United States, but the IFEG mainly use "fire engineer", which they consider a better international description of the engineer who applies their design methods.<ref name="IFEG-US-01" /> The guidelines take their definition of [[Fire safety engineering|fire engineering]] from the International Organization for Standardization (ISO).<ref name="IFEG-US-03" /> In it, fire engineering is the application of engineering principles, rules and expert judgement based on a scientific appreciation of fire, its effects and the behaviour of people.<ref name="IFEG-US-03" /> Its aims include saving life, protecting property, preserving the environment and heritage, quantifying the hazards and risk of fire, and evaluating the measures needed to limit its consequences to prescribed levels.<ref name="IFEG-US-03" />


The handbook covers mechanics of fluids, heat transfer, combustion, fire dynamics, detection, suppression, smoke control, evacuation and risk analysis. Its section organisation allows different specialists to contribute methods and evidence. No single chapter represents every aspect of fire safety engineering.<ref name="SFPE-contents">DiNenno (2002), pp. v–vii.</ref>
NIST, the US National Institute of Standards and Technology, counts SFPE among the organisations that represent engineers, such as the National Society of Professional Engineers.<ref name="NIST-201" /> It distinguishes these groups from the organisations that develop codes and standards, and notes that they also provide training, especially where training affects how code provisions are applied in practice.<ref name="NIST-201" /> SFPE also carries out periodic surveys of the industry to understand what roles fire protection engineers play.<ref name="IFEG-US-01" /> The IFEG list two SFPE periodicals, the ''Journal of Fire Protection Engineering'' and the ''SFPE Journal'', among the journals useful to fire engineering professionals.<ref name="IFEG-US-05" /> In New Zealand, the IFEG note that fire engineers may be approved for full membership of bodies such as SFPE once they have shown appropriate qualifications and experience. Membership of an institution does not, however, necessarily prove the competence of an individual.<ref name="IFEG-NZ-04">National Research Council of Canada et al. (2005), Part 0 (New Zealand), p. 0.4-2.</ref>


NUREG-1805 provides an example of that knowledge being adapted. Its fire-dynamics methods were derived primarily from the SFPE Handbook, the NFPA Fire Protection Handbook and other fire-science literature. The methods were then implemented for US nuclear fire-protection inspection rather than presented as universal building-design answers.<ref name="NUREG-1-1" />
== The SFPE Handbook ==


C/VM2 also points to documents describing the Fire Engineering Brief, including IFEG and publications by British Standards and SFPE. This places SFPE guidance within a broader design and review process. Local regulatory methods still determine how compliance can be demonstrated.<ref name="CVM2-7" />
The third edition (2002) of the ''SFPE Handbook of Fire Protection Engineering'' is copyrighted by SFPE and published by the [[NFPA|National Fire Protection Association]] (NFPA) in Quincy, Massachusetts.<ref name="DiNenno-iii" /> Philip J. DiNenno was editor-in-chief, with six section editors from consultancies, a university, NIST, NFPA and The Fire Safety Institute.<ref name="DiNenno-iii" /> Its 72 chapters, each written by named authors, are grouped into five sections: Fundamentals, Fire Dynamics, Hazard Calculations, Design Calculations and Fire Risk Analysis.<ref name="DiNenno-v">DiNenno et al. (2002), pp. v–viii.</ref> Appendices then give data such as conversion factors, thermophysical properties of materials and fuel properties.<ref name="DiNenno-v" />
[[File:fse-sfpe-v1.svg|thumb|upright=1.5|alt=Fundamentals and hazard methods support design and risk analysis in the handbook.|The handbook combines specialist technical subjects. Based on DiNenno et al. (2002), pp. iii–vii.]]


SFPE's role is therefore best understood through its technical resources and professional activities. The supplied documents do not provide a complete organisational history, and no founding dates or membership claims are needed to explain that role.<ref name="SFPE-iii" /><ref name="IFEG-0-3-2" />
In his preface, DiNenno describes the handbook as a contribution towards documenting and integrating the theoretical and applied bases of fire safety engineering.<ref name="DiNenno-ix">DiNenno et al. (2002), pp. ix–x.</ref> The rapid assimilation of performance-based design had, in his view, underscored its importance.<ref name="DiNenno-ix" /> The third edition added chapters on heat fluxes from fires to surfaces, water mist systems and computer field modelling, and more material on risk assessment.<ref name="DiNenno-ix" /> Part of the new material on radiation heat transfer came from an SFPE technical committee working towards consensus on engineering methods.<ref name="DiNenno-ix" /> The editors expected future editions to include the work of several engineering consensus groups aiming at a consensus-based standard of care in fire safety engineering.<ref name="DiNenno-ix" />


== Handbook and technical authorship ==
Other documents draw on the handbook as well. NUREG-1805, a 2004 report for the US Nuclear Regulatory Commission, derived the technical basis of its Fire Dynamics Tools primarily from the SFPE Handbook and the NFPA Fire Protection Handbook.<ref name="Iqbal-xxxvii">Iqbal and Salley (2004), p. xxxvii.</ref> The IFEG name the SFPE Handbook among the textbooks that give methods for smoke production, smoke layer height, upper layer temperature and smoke movement.<ref name="IFEG-2-5">National Research Council of Canada et al. (2005), p. 2.5-2.</ref> In New Zealand, C/VM2 (2025) refers readers to Section 3, Chapter 13 of the fourth edition (2008) for more information on calculating the required safe egress time and on egress calculation procedures.<ref name="MBIE-26" /><ref name="MBIE-61">Ministry of Business, Innovation and Employment (2025b), p. 61.</ref>


The third-edition handbook lists Philip J. DiNenno as editor-in-chief. Section editors include Dougal Drysdale, Craig Beyler, W. Douglas Walton, Richard Custer, John Hall and John Watts. Their affiliations span universities, NIST, consulting organisations and NFPA.<ref name="SFPE-iii" />
The textbook ''Introduction to Fire Safety Engineering'' also takes values from the handbook. Its walking speeds for different groups, for example, range from 0.58 m/s for people with a walking frame to 1.25 m/s for healthy, unimpeded people.<ref name="VR-7.4">Van Rossum (2027), §7.4.</ref> From the same source it takes the smoke potential, which expresses how much light the smoke from one kilogram of burnt material blocks.<ref name="VR-6.4">Van Rossum (2027), §6.4.</ref> In fires this is usually 3,300 m²/kg, a generic average for burning building and furnishing materials.<ref name="VR-6.4" />
[[File:fse-sfpe-v1.svg|thumb|upright=1.5|alt=Fundamentals and hazard methods support design and risk analysis in the handbook.|The handbook combines specialist technical subjects. Based on DiNenno (2002), pp. iii–vii.]]


This editorial model separates specialist subjects while keeping them within one reference work. Fundamentals and hazard calculations inform later design and risk methods. Readers must follow those relationships instead of treating each formula as independent of its evidence base.<ref name="SFPE-contents" />
== Engineering guides and standards ==


The handbook's publication information identifies SFPE in Bethesda, Maryland, and NFPA in Quincy, Massachusetts. It also states copyright by SFPE and publication by NFPA. These bibliographic details document the organisations' respective roles in that edition.<ref name="SFPE-iii" />
Besides the handbook, SFPE publishes engineering guides that evaluate calculation methods for particular problems. In the handbook chapter on large hydrocarbon fires, Beyler explains that the methods for radiation from pool fires were evaluated and included in an SFPE engineering guide.<ref name="Beyler-272">Beyler (2002a), p. 3-272.</ref> In that guide the methods are described in full, their assumptions are identified and their limits of applicability are assessed.<ref name="Beyler-272" /> The guide also lists available input data and compares the accuracy of the methods with experimental data.<ref name="Beyler-272" /> These [[Hand calculations|hand calculations]] range from very crude initial hazard assessments to detailed methods that need more engineering effort.<ref name="Beyler-272" /> Where a simple method shows that a separation distance is far larger than needed for safety, a more rigorous analysis may not be necessary.<ref name="Beyler-272" />


Authorship of a chapter matters when citing a method. The handbook contains named contributors whose chapters should be identified rather than attributing every statement to SFPE as a single author. This is why articles in this wiki cite chapter authors and printed page numbers.<ref name="SFPE-iii" /><ref name="Fleming-4-73">Fleming (2002), p. 4-73.</ref>
A related SFPE guide of 2000 treats skin burns from thermal radiation in more detail than the handbook.<ref name="Beyler-308">Beyler (2002a), pp. 3-308, 3-313.</ref> In New Zealand, C/VM2 (2025) points to that guide where occupants escape past more than one window, because the time-dependent build-up of radiation must then be calculated.<ref name="MBIE-34">Ministry of Business, Innovation and Employment (2025b), pp. 34–35.</ref> For computer fire models, SFPE published Guidelines for Substantiating a Fire Model for a Given Application (2011). A 2016 validation study for the NRC names them as a useful reference next to the ASTM standard that the study follows.<ref name="Stroup">Stroup et al. (2016), p. 1-3.</ref>


The handbook is a secondary engineering resource rather than the original source of every underlying study. Where it summarises earlier experiments or correlations, the stated test conditions and limitations must be retained. Citing the handbook does not make every method universally valid.<ref name="NUREG-1-1" /><ref name="Notarianni-5-43">Notarianni (2002), pp. 5-43–5-44.</ref>
Such guidance does not make a calculation tool self-validating. NUREG-1805 asks first-time users to read the whole report before an analysis and to apply its spreadsheet tools only within the limits of their validity.<ref name="Iqbal-xxxix">Iqbal and Salley (2004), p. xxxix.</ref> The IFEG add that even an expensive and highly sophisticated computer model does not guarantee accurate results, so all model output must be reviewed and verified.<ref name="IFEG-2-8">National Research Council of Canada et al. (2005), p. 2.8-4.</ref> They also describe a hydraulic method for evacuation from the SFPE Handbook, which assumes among other things that all occupants start to leave at the same time.<ref name="IFEG-2-8" />
[[File:fse-sfpe-v2.svg|thumb|upright=1.5|alt=Scenario inputs pass through a bounded hand calculation and independent plausibility review.|Hand calculations require valid inputs and critical review. Based on Iqbal and Salley (2004), p. xxxix and National Research Council of Canada et al. (2005), p. 2.8-4.]]


== Engineering methods and hand calculations ==
SFPE also issues engineering standards. The Australian data sheets for the Fire Safety Verification Method (2020) cite SFPE S.01 (2011), a standard on calculating fire exposures to structures, as a standardised approach to predicting flashover.<ref name="ABCB-B1" /> For fire models, it gives as criteria for flashover an upper layer temperature above 600 °C or a heat flux to the floor above 20 kW/m².<ref name="ABCB-B1" /> The accompanying handbook lists S.01 among the methods for fully developed fires.<ref name="ABCB-H" /> It names SFPE S.02 (2015) as a source of examples for checking heat transfer models, a process known as validation and verification.<ref name="ABCB-H" /> In the United States, NIST recommended in 2005 that standards committees draw on the ASCE/SFPE 29 standard for fire resistance design when they address progressive collapse under fire conditions.<ref name="NIST-206">National Institute of Standards and Technology (2005), pp. 206, 212.</ref>


[[Hand calculations]] are simplified methods used to estimate fire phenomena and system responses. They can provide first-order estimates, comparisons and checks on more detailed work. Their equations and correlations require appropriate inputs and a stated validity range.<ref name="NUREG-1-1" /><ref name="IFEG-2-5-1">Australian Building Codes Board et al. (2005), pp. 2.5-1–2.5-2.</ref>
== Performance-based design ==


NUREG-1805 presents fire-dynamics tools for first-order quantitative analysis. It describes preprogrammed correlations and equations used by inspectors, with instructions to read the technical basis before analysis. The spreadsheet does not remove the need to understand the method and its assumptions.<ref name="NUREG-1-1" />
For [[Performance-based design|performance-based design]], SFPE published its Engineering Guide to Performance-Based Fire Protection Analysis and Design of Buildings in 2000.<ref name="IFEG-US-01" /> The guide is meant for both design engineers and approving authorities.<ref name="Notarianni-42" /> Its stated intent is to help them determine and document that agreed levels of fire safety are achieved for a particular project.<ref name="Notarianni-42" /> Its steps are to define the project scope, identify goals, define objectives, develop performance criteria, develop fire scenarios, develop and evaluate candidate designs, and select and document the final design.<ref name="Notarianni-42" /> The documentation has four parts: a fire protection engineering design brief, a performance design report, detailed specifications and drawings, and a building operations and maintenance manual.<ref name="Notarianni-60">Notarianni (2002), p. 5-60.</ref>
[[File:fse-sfpe-v2.svg|thumb|upright=1.5|alt=Scenario inputs pass through a bounded hand calculation and independent plausibility review.|Hand calculations require valid inputs and critical review. Based on U.S. Nuclear Regulatory Commission (2005), pp. 1-1–1-2 and Australian Building Codes Board et al. (2005), p. 2.8-4.]]


IFEG likewise presents simple methods for smoke production, layer height, temperature and movement. These methods depend on plume geometry, enclosure dimensions and fire inputs. Their calculated results must not be transferred beyond the conditions from which they were developed.<ref name="IFEG-2-5-2">Australian Building Codes Board et al. (2005), pp. 2.5-2–2.5-4.</ref>
The guide also gives a method for quantifying the fire risk from several fire scenarios. The total risk is the sum, over all fire scenarios considered, of the loss in each scenario multiplied by how often that scenario occurs.<ref name="Meacham">Meacham (2002), p. 5-161.</ref> Watts and Hall (2002) note that SFPE addresses the basics of fire risk analysis in its publications on performance-based design, and that SFPE task groups were adding further detail.<ref name="WattsHall">Watts and Hall (2002), pp. 5-6–5-7.</ref>


Simplified methods can help compare alternative designs. Consistent inputs and criteria allow reviewers to see how a change in arrangement affects the result. That comparison remains sensitive to the chosen benchmark and should not hide differences between scenarios.<ref name="IFEG-1-2-25">Australian Building Codes Board et al. (2005), pp. 1.2-25–1.2-26.</ref>
Other guidance builds on this work. The IFEG drew on the 2000 SFPE guide and on a Code Officials Guide to Performance-Based Design Review that SFPE produced with the International Code Council in 2004.<ref name="IFEG-US-01" /> For the United States, the IFEG call both documents good resources for deriving goals and objectives where no performance code has been adopted.<ref name="IFEG-US-02">National Research Council of Canada et al. (2005), Part 0 (United States), p. 0.2-9.</ref> They also mention SFPE work towards a consistent method for determining design fires.<ref name="IFEG-US-02" /> In addition, the IFEG recommend both guides as a benchmark for third-party reviewers of fire engineering reports.<ref name="IFEG-US-03-9">National Research Council of Canada et al. (2005), Part 0 (United States), pp. 0.3-8–0.3-9.</ref> In New Zealand, C/VM2 (2025) lists SFPE, with the IFEG and British Standards, among the publishers of internationally recognised documents on the fire engineering brief process.<ref name="MBIE-7">Ministry of Business, Innovation and Employment (2025b), p. 7.</ref>


Hand calculations also support review of computer output. A separate estimate can reveal an implausible input or unit, even where it cannot reproduce every detail of the model. This checking role is part of sound engineering practice rather than a claim that simpler is always better.<ref name="IFEG-2-8-4">Australian Building Codes Board et al. (2005), p. 2.8-4.</ref><ref name="NUREG-1-1" />
== Uncertainty and limits ==


== Performance-based design guidance ==
SFPE guidance does not remove uncertainty from performance-based design. Notarianni (2002) describes a review of the design process in the SFPE guide and of several case studies of real designs.<ref name="Notarianni-42" /> The review found seven barriers to documenting that agreed levels of fire safety had been reached.<ref name="Notarianni-42" /> The first two are performance criteria that are not established or agreed, and an unspecified process for choosing design fires.<ref name="Notarianni-43">Notarianni (2002), pp. 5-43–5-44.</ref> Others are assumptions about human behaviour, poorly documented limits of fire models and model outputs given as single values.<ref name="Notarianni-43" /> The last two are engineers working beyond their expertise and the lack of a standard way to include the reliability of fire protection systems.<ref name="Notarianni-43" />


[[Performance-based design]] evaluates whether a design meets agreed performance criteria. SFPE guidance describes steps for developing and documenting that evaluation. The guidance is intended to support both design engineers and approving authorities.<ref name="Notarianni-5-43" />
Each barrier can lead to switchover, in which reasonable changes in inputs, scenarios or parameters change the decision on whether a design is acceptable.<ref name="Notarianni-42" /> In one example, two engineers who had both followed the current design guidelines for real buildings chose very different performance criteria.<ref name="Notarianni-43" /> Because model predictions are compared with such criteria, the same design can pass under one set and fail under another.<ref name="Notarianni-43" />
 
The process begins with objectives, criteria and an understanding of the project. Design fires, occupant assumptions and analysis methods must then be selected and documented. A calculation performed without those foundations does not demonstrate that the agreed level of safety was achieved.<ref name="Notarianni-5-43" /><ref name="IFEG-1-2-3">Australian Building Codes Board et al. (2005), pp. 1.2-2–1.2-3.</ref>
 
The Fire Engineering Brief provides a related structure for stakeholder agreement. It records the scope, building and occupant characteristics, hazards, trial designs and acceptance criteria. SFPE guidance forms part of the wider collection of documents that can support such a process.<ref name="CVM2-7" /><ref name="IFEG-1-2-3" />
 
Performance-based work is iterative. Trial designs that fail the criteria must be revised and reassessed. The process should guide design development rather than simply producing a favourable report after decisions are complete.<ref name="IFEG-1-2-2">Australian Building Codes Board et al. (2005), pp. 1.2-2–1.2-3.</ref>
 
Acceptance can be comparative or absolute. A comparative method uses a common benchmark and compatible criteria, while an absolute method evaluates directly against agreed requirements. Both require explicit treatment of evidence and uncertainty.<ref name="IFEG-1-2-25" /><ref name="Notarianni-5-43" />
 
== Uncertainty and limitations of models ==
 
Notarianni identifies barriers to documenting agreed safety levels, including missing criteria, unspecified design fires, behavioural assumptions and model limitations. These can cause a design decision to switch when reasonable inputs change. The analysis must therefore examine more than one nominal result.<ref name="Notarianni-5-43" />
[[File:fse-sfpe-v3.svg|thumb|upright=1.5|alt=Changed criteria, scenarios, behaviour and model assumptions lead to different acceptability outcomes.|Uncertainty can change a design from acceptable to unacceptable. Based on Notarianni (2002), pp. 5-43–5-44.]]
[[File:fse-sfpe-v3.svg|thumb|upright=1.5|alt=Changed criteria, scenarios, behaviour and model assumptions lead to different acceptability outcomes.|Uncertainty can change a design from acceptable to unacceptable. Based on Notarianni (2002), pp. 5-43–5-44.]]


Human behaviour is a recurring source of uncertainty. Assumptions of immediate departure, full mobility and balanced exit use may not match observed behaviour. SFPE guidance calls for those assumptions to be revealed and their effects explored.<ref name="Notarianni-5-43" /><ref name="Proulx-3-342">Proulx (2002), pp. 3-342–3-344.</ref>
Human behaviour is a particular source of uncertainty. Proulx (2002) warns that research has shown some traditional assumptions about behaviour in fires to be wrong.<ref name="Proulx">Proulx (2002), pp. 3-342–3-343.</ref> He also cites the observation that the hydraulic model of evacuation assumes occupants who are alert, able-bodied and ambulatory, and deals only with movement, not with the time people take to start.<ref name="Proulx" /> Notarianni adds that one internationally used egress model assumes that all occupants are readily mobile and leave as soon as they hear an alarm.<ref name="Notarianni-43" /> Experience shows that this is often not the case.<ref name="Notarianni-43" />
 
Fire models predict effects based on selected inputs rather than reproducing every aspect of a real fire. Their validity conditions must be known and respected. Applying a model outside its intended conditions can produce an exact-looking but technically unreliable answer.<ref name="Notarianni-5-43" />
 
Point outputs do not directly show the uncertainty around them. A predicted activation time or evacuation time may change with fire growth, location, detector properties or occupant behaviour. Reporting only the point value can conceal that sensitivity.<ref name="Notarianni-5-43" />
 
Engineers can also work beyond their expertise without recognising it. Notarianni includes this among the barriers to defensible performance-based design. Specialist input and independent review help identify assumptions that a generalist may not recognise.<ref name="Notarianni-5-44">Notarianni (2002), pp. 5-43–5-44.</ref><ref name="IFEG-0-3-9">Australian Building Codes Board et al. (2005), p. 0.3-9.</ref>
 
== Ethics and professional judgement ==
 
[[Ethics in fire safety engineering]] concerns competence, honesty about evidence and attention to the consequences of engineering decisions. SFPE resources emphasise that uncertainty must be recognised rather than hidden. A defensible analysis states what is known, assumed and unresolved.<ref name="Notarianni-5-43" /><ref name="IFEG-1-8-10">Australian Building Codes Board et al. (2005), pp. 1.8-9–1.8-11.</ref>
 
Third-party review can test the quality of the Fire Engineering Brief, assumptions and calculations. IFEG calls for an independent reviewer with suitable competence and professional detachment. Review should be constructive and should not simply repeat the original engineer's preferences.<ref name="IFEG-0-3-9" />
 
Professional judgement remains necessary where methods or data are incomplete. IFEG requires such judgement to be justified in detail and, where appropriate, supplemented by other methods or data. It must not be used to disguise missing evidence.<ref name="IFEG-1-8-10" />
 
Communication is also part of professional responsibility. A design that depends on maintenance, staff action or occupant characteristics must communicate those conditions. Otherwise a favourable analysis can be undermined by an operational arrangement that was never specified.<ref name="IFEG-0-3-7">Australian Building Codes Board et al. (2005), pp. 0.3-7–0.3-8.</ref><ref name="IFEG-1-8-14">Australian Building Codes Board et al. (2005), pp. 1.8-13–1.8-14.</ref>
 
The limitations of a source should be reported as carefully as its result. Handbook equations, test data and example calculations belong to particular conditions. Honest use of SFPE material requires those conditions to remain visible in the project documentation.<ref name="NUREG-1-1" /><ref name="Notarianni-5-43" />
 
== Relationship with NFPA ==
 
[[NFPA]] is the National Fire Protection Association, which develops and publishes consensus codes and standards and publishes the SFPE Handbook. SFPE is associated with professional engineering guidance and technical development. Their collaboration does not make their roles identical.<ref name="SFPE-iii" /><ref name="NUREG-E1">U.S. Nuclear Regulatory Commission (2005), p. E-1.</ref>
 
The third-edition handbook records SFPE as copyright owner and NFPA as publisher. This is a concrete example of how professional technical content and publication infrastructure can come together. It should not be used to infer that every SFPE guide is an NFPA code.<ref name="SFPE-iii" />
 
NFPA standards can define installation or equipment requirements within an adopted framework. SFPE guides more often support the analysis of whether fire-safety objectives are achieved. Both kinds of document may be needed in a project, but their legal and technical status differs.<ref name="NUREG-E1" /><ref name="Notarianni-5-43" />
 
The two organisations' resources are also used together in government methods. NUREG-1805 draws on both handbooks for its first-order fire-hazard methods. Its nuclear-specific context must still be retained when those methods are applied.<ref name="NUREG-1-1" />
 
Using documents by title rather than by organisational shorthand reduces confusion. A citation should identify the guide, standard, chapter or edition that supports a claim. This is more reliable than saying that a design follows SFPE or NFPA without further detail.<ref name="SFPE-iii" /><ref name="Keough-1">Keough and Grill (2005), pp. 1–2.</ref>
 
== Use and review of SFPE resources ==
 
The intended engineering question should guide resource selection. A heat-response correlation, an evacuation method and a performance-based design guide address different problems. Choosing a recognised publication does not establish that its method is appropriate to the question.<ref name="IFEG-2-8-4" /><ref name="Notarianni-5-43" />
 
Input data must be evaluated for relevance and quality. Laboratory tests, incident observations and exposure data provide different evidence, and each has limitations. Engineering analysis must connect those inputs to the actual building, occupants and systems.<ref name="Hall-5-65">Hall and Ahrens (2002), pp. 5-65–5-66.</ref>
 
Calculations should be reviewed for units, assumptions and sensitivity. Independent checks can reveal a wrong input or a method used outside its domain. More complex software does not remove that need.<ref name="IFEG-2-8-4" /><ref name="NUREG-1-1" />
 
Project documentation should make the technical path traceable. Readers need to see the objectives, trial designs, scenarios, inputs and acceptance criteria. This enables reviewers to distinguish evidence from judgement and determine whether the conclusion is supported.<ref name="IFEG-1-2-3" /><ref name="IFEG-0-3-9" />


Operational conditions should be checked after implementation. Changes to the building, occupancy or systems can invalidate the original analysis. SFPE resources support re-evaluation, but responsibility for maintaining the design basis remains with the project and building management.<ref name="IFEG-0-3-8">Australian Building Codes Board et al. (2005), p. 0.3-8.</ref><ref name="IFEG-1-8-14" />
The handbook also has practical limits. Some of its equations, tables and charts keep US customary units because their data were originally developed in those units.<ref name="DiNenno-ix" /> Its notice states that neither the publisher nor the authors guarantee the accuracy or completeness of the contents, and that they supply information and opinion rather than engineering services.<ref name="DiNenno-iii" /> Where such services are needed, the notice advises seeking the help of an appropriate professional.<ref name="DiNenno-iii" />


The edition of a handbook should be identified when its methods are used. The handbook discussed here is the third edition published in 2002, with its own editorial organisation and technical content. Later developments and project-specific standards must be checked separately rather than assumed to share identical provisions.<ref name="SFPE-iii" /><ref name="Keough-1" />
== Ethics and professional practice ==


Professional competence includes knowing when to seek another discipline. Fire behaviour, structures, human response and building services can require different specialists. Review arrangements should bring that expertise into the assessment where the problem exceeds the original engineer's knowledge.<ref name="Notarianni-5-44" /><ref name="IFEG-0-3-9" />
One of SFPE's contributions to [[Ethics in fire safety engineering|ethics in fire safety engineering]] is its Canon of Ethics for Fire Protection Engineers, which the IFEG quote in part.<ref name="IFEG-US-04">National Research Council of Canada et al. (2005), Part 0 (United States), p. 0.4-2.</ref> Its preamble calls fire protection engineering an important learned profession whose work has a direct and vital impact on the quality of life of all people.<ref name="IFEG-US-04" /> The services of fire protection engineers therefore require honesty, impartiality, fairness and equity, and must be dedicated to protecting and enhancing public safety, health and welfare.<ref name="IFEG-US-04" /> Engineers are expected to maintain and constantly improve their competence and to act with balanced regard for the interests of the public, clients, employers, colleagues and the profession.<ref name="IFEG-US-04" />


SFPE methods can also be used during the building life cycle. Initial design analysis may need to be repeated when alterations affect the fire scenario or system dependencies. The original handbook method remains a tool, while the need for renewed evaluation follows from the changed building.<ref name="IFEG-0-3-8" />
Three fundamental principles follow from the preamble. Fire protection engineers use their knowledge and skill for the enhancement of human welfare.<ref name="IFEG-US-04" /> They are honest and impartial and serve the public, their employers and their clients with fidelity.<ref name="IFEG-US-04" /> They also strive to increase the competence and prestige of their profession.<ref name="IFEG-US-04" /> The IFEG state that the canon deals with professional issues outside their own scope and should be consulted as appropriate.<ref name="IFEG-US-01" />


Model verification should examine both the calculation and its interpretation. Correct implementation of an equation does not establish that the scenario, inputs or acceptance criteria are appropriate. Review must therefore cover the whole reasoning chain rather than only arithmetic.<ref name="IFEG-2-8-4" /><ref name="Notarianni-5-43" />
SFPE also has a role in education. After its World Trade Center investigation, NIST named SFPE in 2005 among the organisations affected by its recommendation to develop continuing education for fire protection engineers, structural engineers and architects.<ref name="NIST-222">National Institute of Standards and Technology (2005), pp. 222–223.</ref> It also named SFPE for training material on computational fire dynamics and thermostructural analysis tools.<ref name="NIST-222" /> For NIST's report on the active fire protection systems of the World Trade Center, an SFPE engineering programmes manager supplied introductory and summary material.<ref name="Evans">Evans et al. (2005), p. xxvii.</ref> Its purpose was to give all readers a common basis for understanding the results.<ref name="Evans" />


Risk and reliability analysis needs suitable exposure and performance data. Incident statistics, field observations and test results contribute different kinds of evidence. Using them with clear definitions and denominators supports more transparent comparisons between protective options.<ref name="Hall-5-65" />
== Relationship with NFPA and with regulation ==


These practices give SFPE resources a supporting role in responsible engineering rather than an authoritative answer for every project. Their value lies in documented methods, specialist knowledge and attention to uncertainty. Their appropriate use still depends on competent application and review.<ref name="Notarianni-5-43" /><ref name="IFEG-1-8-10" />
SFPE and NFPA are separate organisations with different roles. NFPA develops and publishes consensus codes and standards, whereas NIST groups SFPE with the organisations that represent engineers.<ref name="Iqbal-E1" /><ref name="NIST-201" /> The IFEG list the two as distinct bodies that publish fire engineering knowledge.<ref name="IFEG-US-05" /> They work together on publications: SFPE holds the copyright of the SFPE Handbook and NFPA publishes it.<ref name="DiNenno-iii" /> NIST also named both in 2005 for work on standard methods for multi-floor design fire scenarios.<ref name="NIST-206" />


Attribution should remain specific when drawing on handbook material. Citing the chapter author, edition and printed locator makes clear which technical treatment supports a claim. This is more informative than citing SFPE alone, particularly where different chapters use different assumptions or evidence.<ref name="SFPE-iii" /><ref name="Fleming-4-73" />
SFPE guides and standards are not regulations in themselves. A NIST report on the World Trade Center explains that trade associations and professional societies develop practices that may guide how buildings are designed and built.<ref name="Lew">Lew et al. (2005), p. 142.</ref> Such practices are not strictly enforceable unless a code refers to them, but they represent a consensus of what is reasonable or prudent.<ref name="Lew" /> Where a regulatory document does refer to SFPE material, it does so selectively. C/VM2 (2025), for example, cites the SFPE Handbook and an SFPE guide only in particular comments and clauses.<ref name="MBIE-61" /> Compliance with the New Zealand Building Code still requires each of its own ten design scenarios to be satisfied.<ref name="MBIE-7" />


Review by another competent engineer can be especially valuable when a model or design criterion is disputed. The reviewer should examine the Fire Engineering Brief and calculation basis, not merely agree with the conclusion. This supports transparent resolution of technical uncertainty and professional judgement.<ref name="IFEG-0-3-9" /><ref name="Notarianni-5-43" />
C/VM2 is meant for professional fire engineers who are proficient in fire engineering modelling methods.<ref name="MBIE-7" /> They are expected to apply appropriate judgement to model inputs and results.<ref name="MBIE-7" /> The IFEG likewise allow engineering judgement where valid methods or verified data are not available, but require all quantification based on it to be justified in detail.<ref name="IFEG-1-8">National Research Council of Canada et al. (2005), p. 1.8-10.</ref> For the United States, they give the fire engineer the task of evaluating a performance design and the authority having jurisdiction the task of assessing and approving it.<ref name="IFEG-US-0211">National Research Council of Canada et al. (2005), Part 0 (United States), p. 0.2-11.</ref>


== See also ==
== See also ==


* [[Ethics in fire safety engineering]]
* [[Acceptance criteria]]
* [[Fire safety engineering]]
* [[Fire scenario]]
* [[NFPA]]
* [[Fire safety objectives]]
* [[Qualitative design review]]
* [[Building regulations]]


== Notes ==
== Notes ==
Line 132: Line 82:
== References ==
== References ==


* Australian Building Codes Board, National Research Council of Canada, International Code Council, & Department of Building and Housing New Zealand. (2005). ''International fire engineering guidelines'' (2005 ed.). Australian Building Codes Board.
* Australian Building Codes Board. (2020a). ''Data sheets: Fire Safety Verification Method'' (Handbook annex, Print version 1.1).
* DiNenno, P. J. (Ed.). (2002). ''SFPE handbook of fire protection engineering'' (3rd ed.). National Fire Protection Association.
* Australian Building Codes Board. (2020b). ''Handbook: Fire Safety Verification Method'' (Print version 1.1).
* Fleming, R. P. (2002). Automatic sprinkler system calculations. In P. J. DiNenno (Ed.), ''SFPE handbook of fire protection engineering'' (3rd ed.). National Fire Protection Association.
* Beyler, C. L. (2002a). Fire hazard calculations for large, open hydrocarbon fires. In P. J. DiNenno, D. Drysdale, C. L. Beyler, W. D. Walton, R. L. P. Custer, J. R. Hall Jr., & J. M. Watts Jr. (Eds.), ''SFPE handbook of fire protection engineering'' (3rd ed., pp. 3-268–3-314). National Fire Protection Association; Society of Fire Protection Engineers.
* Hall, J. R., Jr., & Ahrens, M. J. (2002). Data for engineering analysis. In P. J. DiNenno (Ed.), ''SFPE handbook of fire protection engineering'' (3rd ed.). National Fire Protection Association.
* DiNenno, P. J., Drysdale, D., Beyler, C. L., Walton, W. D., Custer, R. L. P., Hall, J. R., Jr., & Watts, J. M., Jr. (Eds.). (2002). ''SFPE handbook of fire protection engineering'' (3rd ed.). National Fire Protection Association; Society of Fire Protection Engineers.
* Keough, R. J., & Grill, R. A. (2005). ''Fire alarm systems'' (NIST NCSTAR 1-4C). National Institute of Standards and Technology.
* Evans, D. D., Peacock, R. D., Kuligowski, E. D., Dols, W. S., & Grosshandler, W. L. (2005). ''Active fire protection systems'' (NIST NCSTAR 1-4). National Institute of Standards and Technology.
* Ministry of Business, Innovation and Employment. (2025). ''C protection from fire: Verification method C/VM2'' (2nd ed.). New Zealand Government.
* Iqbal, N., & Salley, M. H. (2004). ''Fire Dynamics Tools (FDTs): Quantitative fire hazard analysis methods for the U.S. Nuclear Regulatory Commission Fire Protection Inspection Program'' (NUREG-1805). U.S. Nuclear Regulatory Commission, Office of Nuclear Reactor Regulation.
* Notarianni, K. A. (2002). Uncertainty. In P. J. DiNenno (Ed.), ''SFPE handbook of fire protection engineering'' (3rd ed.). National Fire Protection Association.
* Lew, H. S., Bukowski, R. W., & Carino, N. J. (2005). ''Design, construction, and maintenance of structural and life safety systems'' (NIST NCSTAR 1-1). National Institute of Standards and Technology.
* Proulx, G. (2002). Movement of people: The evacuation timing. In P. J. DiNenno (Ed.), ''SFPE handbook of fire protection engineering'' (3rd ed.). National Fire Protection Association.
* Meacham, B. J. (2002). Building fire risk analysis. In P. J. DiNenno, D. Drysdale, C. L. Beyler, W. D. Walton, R. L. P. Custer, J. R. Hall Jr., & J. M. Watts Jr. (Eds.), ''SFPE handbook of fire protection engineering'' (3rd ed., pp. 5-153–5-175). National Fire Protection Association; Society of Fire Protection Engineers.
* U.S. Nuclear Regulatory Commission. (2005). ''Fire dynamics tools: Quantitative fire hazard analysis methods for the U.S. nuclear regulatory commission fire protection inspection program'' (NUREG-1805). Author.
* Ministry of Business, Innovation and Employment. (2025b). ''Verification Method C/VM2: Framework for fire safety design'' (2nd ed.).
* National Institute of Standards and Technology. (2005). ''Final report on the collapse of the World Trade Center towers'' (NIST NCSTAR 1).
* National Research Council of Canada, International Code Council, Department of Building and Housing, & Australian Building Codes Board. (2005). ''International fire engineering guidelines'' (2005 ed.). Australian Building Codes Board.
* Notarianni, K. A. (2002). Uncertainty. In P. J. DiNenno, D. Drysdale, C. L. Beyler, W. D. Walton, R. L. P. Custer, J. R. Hall Jr., & J. M. Watts Jr. (Eds.), ''SFPE handbook of fire protection engineering'' (3rd ed., pp. 5-40–5-64). National Fire Protection Association; Society of Fire Protection Engineers.
* Proulx, G. (2002). Movement of people: The evacuation timing. In P. J. DiNenno, D. Drysdale, C. L. Beyler, W. D. Walton, R. L. P. Custer, J. R. Hall Jr., & J. M. Watts Jr. (Eds.), ''SFPE handbook of fire protection engineering'' (3rd ed., pp. 3-342–3-366). National Fire Protection Association; Society of Fire Protection Engineers.
* Stroup, D., Lindeman, A., McGrattan, K., Peacock, R., Overholt, K., Joglar, F., LeStrange, S., & Montanez, S. (2016). ''Verification and validation of selected fire models for nuclear power plant applications: Supplement 1'' (NUREG-1824, Supplement 1; EPRI 3002002182). U.S. Nuclear Regulatory Commission, Office of Nuclear Regulatory Research; Electric Power Research Institute.
* Van Rossum, E. (2027). ''Introduction to Fire Safety Engineering''. Fire Safety Academy.
* Watts, J. M., Jr., & Hall, J. R., Jr. (2002). Introduction to fire risk analysis. In P. J. DiNenno, D. Drysdale, C. L. Beyler, W. D. Walton, R. L. P. Custer, J. R. Hall Jr., & J. M. Watts Jr. (Eds.), ''SFPE handbook of fire protection engineering'' (3rd ed., pp. 5-1–5-7). National Fire Protection Association; Society of Fire Protection Engineers.


[[Category:Fire Safety Design & Regulation]]
[[Category:Fire Safety Design & Regulation]]

Revision as of 19:04, 2 November 2026

SFPE, the Society of Fire Protection Engineers, is an organisation in the United States that represents fire protection engineers.[1] It is based in Bethesda, Maryland.[2] The International Fire Engineering Guidelines (IFEG, 2005) list SFPE among the organisations that publish and provide knowledge for fire engineering.[3] Its publications include the SFPE Handbook of Fire Protection Engineering, engineering guides on subjects such as performance-based design, and engineering standards such as one on calculating fire exposures to structures.[2][4][5]

SFPE has also developed a Canon of Ethics for Fire Protection Engineers, to which the IFEG refer for professional issues outside their own scope.[6] Its publications are used well beyond the United States. In New Zealand, Verification Method C/VM2 (second edition, 2025) refers to the SFPE Handbook for evacuation calculations.[7] In Australia, the 2020 handbook for the Fire Safety Verification Method cites SFPE engineering standards.[8] SFPE is a separate body from the National Fire Protection Association, which publishes the SFPE Handbook and develops codes and standards of its own.[2][9]

Fire protection engineering and the society

SFPE describes fire protection engineering as the application of science and engineering principles to protect people and their environment from destructive fire.[10] In this description the field includes the analysis of fire hazards. It also covers reducing fire damage through the design, construction, arrangement and use of buildings, materials, structures, industrial processes and transport systems.[10] A third part is the design, installation and maintenance of fire detection, suppression and communication systems, and a fourth is investigation and analysis after a fire.[10] In the SFPE wording, a fire protection engineer knows through education, training and experience how fires start and spread, and how they can be detected, controlled or extinguished.[10] Such an engineer can also anticipate how materials, structures and processes behave in fire.[10]

The term "fire protection engineer" is common in the United States, but the IFEG mainly use "fire engineer", which they consider a better international description of the engineer who applies their design methods.[6] The guidelines take their definition of fire engineering from the International Organization for Standardization (ISO).[10] In it, fire engineering is the application of engineering principles, rules and expert judgement based on a scientific appreciation of fire, its effects and the behaviour of people.[10] Its aims include saving life, protecting property, preserving the environment and heritage, quantifying the hazards and risk of fire, and evaluating the measures needed to limit its consequences to prescribed levels.[10]

NIST, the US National Institute of Standards and Technology, counts SFPE among the organisations that represent engineers, such as the National Society of Professional Engineers.[1] It distinguishes these groups from the organisations that develop codes and standards, and notes that they also provide training, especially where training affects how code provisions are applied in practice.[1] SFPE also carries out periodic surveys of the industry to understand what roles fire protection engineers play.[6] The IFEG list two SFPE periodicals, the Journal of Fire Protection Engineering and the SFPE Journal, among the journals useful to fire engineering professionals.[3] In New Zealand, the IFEG note that fire engineers may be approved for full membership of bodies such as SFPE once they have shown appropriate qualifications and experience. Membership of an institution does not, however, necessarily prove the competence of an individual.[11]

The SFPE Handbook

The third edition (2002) of the SFPE Handbook of Fire Protection Engineering is copyrighted by SFPE and published by the National Fire Protection Association (NFPA) in Quincy, Massachusetts.[2] Philip J. DiNenno was editor-in-chief, with six section editors from consultancies, a university, NIST, NFPA and The Fire Safety Institute.[2] Its 72 chapters, each written by named authors, are grouped into five sections: Fundamentals, Fire Dynamics, Hazard Calculations, Design Calculations and Fire Risk Analysis.[12] Appendices then give data such as conversion factors, thermophysical properties of materials and fuel properties.[12]

Fundamentals and hazard methods support design and risk analysis in the handbook.
The handbook combines specialist technical subjects. Based on DiNenno et al. (2002), pp. iii–vii.

In his preface, DiNenno describes the handbook as a contribution towards documenting and integrating the theoretical and applied bases of fire safety engineering.[13] The rapid assimilation of performance-based design had, in his view, underscored its importance.[13] The third edition added chapters on heat fluxes from fires to surfaces, water mist systems and computer field modelling, and more material on risk assessment.[13] Part of the new material on radiation heat transfer came from an SFPE technical committee working towards consensus on engineering methods.[13] The editors expected future editions to include the work of several engineering consensus groups aiming at a consensus-based standard of care in fire safety engineering.[13]

Other documents draw on the handbook as well. NUREG-1805, a 2004 report for the US Nuclear Regulatory Commission, derived the technical basis of its Fire Dynamics Tools primarily from the SFPE Handbook and the NFPA Fire Protection Handbook.[14] The IFEG name the SFPE Handbook among the textbooks that give methods for smoke production, smoke layer height, upper layer temperature and smoke movement.[15] In New Zealand, C/VM2 (2025) refers readers to Section 3, Chapter 13 of the fourth edition (2008) for more information on calculating the required safe egress time and on egress calculation procedures.[7][16]

The textbook Introduction to Fire Safety Engineering also takes values from the handbook. Its walking speeds for different groups, for example, range from 0.58 m/s for people with a walking frame to 1.25 m/s for healthy, unimpeded people.[17] From the same source it takes the smoke potential, which expresses how much light the smoke from one kilogram of burnt material blocks.[18] In fires this is usually 3,300 m²/kg, a generic average for burning building and furnishing materials.[18]

Engineering guides and standards

Besides the handbook, SFPE publishes engineering guides that evaluate calculation methods for particular problems. In the handbook chapter on large hydrocarbon fires, Beyler explains that the methods for radiation from pool fires were evaluated and included in an SFPE engineering guide.[19] In that guide the methods are described in full, their assumptions are identified and their limits of applicability are assessed.[19] The guide also lists available input data and compares the accuracy of the methods with experimental data.[19] These hand calculations range from very crude initial hazard assessments to detailed methods that need more engineering effort.[19] Where a simple method shows that a separation distance is far larger than needed for safety, a more rigorous analysis may not be necessary.[19]

A related SFPE guide of 2000 treats skin burns from thermal radiation in more detail than the handbook.[20] In New Zealand, C/VM2 (2025) points to that guide where occupants escape past more than one window, because the time-dependent build-up of radiation must then be calculated.[21] For computer fire models, SFPE published Guidelines for Substantiating a Fire Model for a Given Application (2011). A 2016 validation study for the NRC names them as a useful reference next to the ASTM standard that the study follows.[22]

Such guidance does not make a calculation tool self-validating. NUREG-1805 asks first-time users to read the whole report before an analysis and to apply its spreadsheet tools only within the limits of their validity.[23] The IFEG add that even an expensive and highly sophisticated computer model does not guarantee accurate results, so all model output must be reviewed and verified.[24] They also describe a hydraulic method for evacuation from the SFPE Handbook, which assumes among other things that all occupants start to leave at the same time.[24]

Scenario inputs pass through a bounded hand calculation and independent plausibility review.
Hand calculations require valid inputs and critical review. Based on Iqbal and Salley (2004), p. xxxix and National Research Council of Canada et al. (2005), p. 2.8-4.

SFPE also issues engineering standards. The Australian data sheets for the Fire Safety Verification Method (2020) cite SFPE S.01 (2011), a standard on calculating fire exposures to structures, as a standardised approach to predicting flashover.[5] For fire models, it gives as criteria for flashover an upper layer temperature above 600 °C or a heat flux to the floor above 20 kW/m².[5] The accompanying handbook lists S.01 among the methods for fully developed fires.[8] It names SFPE S.02 (2015) as a source of examples for checking heat transfer models, a process known as validation and verification.[8] In the United States, NIST recommended in 2005 that standards committees draw on the ASCE/SFPE 29 standard for fire resistance design when they address progressive collapse under fire conditions.[25]

Performance-based design

For performance-based design, SFPE published its Engineering Guide to Performance-Based Fire Protection Analysis and Design of Buildings in 2000.[6] The guide is meant for both design engineers and approving authorities.[4] Its stated intent is to help them determine and document that agreed levels of fire safety are achieved for a particular project.[4] Its steps are to define the project scope, identify goals, define objectives, develop performance criteria, develop fire scenarios, develop and evaluate candidate designs, and select and document the final design.[4] The documentation has four parts: a fire protection engineering design brief, a performance design report, detailed specifications and drawings, and a building operations and maintenance manual.[26]

The guide also gives a method for quantifying the fire risk from several fire scenarios. The total risk is the sum, over all fire scenarios considered, of the loss in each scenario multiplied by how often that scenario occurs.[27] Watts and Hall (2002) note that SFPE addresses the basics of fire risk analysis in its publications on performance-based design, and that SFPE task groups were adding further detail.[28]

Other guidance builds on this work. The IFEG drew on the 2000 SFPE guide and on a Code Officials Guide to Performance-Based Design Review that SFPE produced with the International Code Council in 2004.[6] For the United States, the IFEG call both documents good resources for deriving goals and objectives where no performance code has been adopted.[29] They also mention SFPE work towards a consistent method for determining design fires.[29] In addition, the IFEG recommend both guides as a benchmark for third-party reviewers of fire engineering reports.[30] In New Zealand, C/VM2 (2025) lists SFPE, with the IFEG and British Standards, among the publishers of internationally recognised documents on the fire engineering brief process.[31]

Uncertainty and limits

SFPE guidance does not remove uncertainty from performance-based design. Notarianni (2002) describes a review of the design process in the SFPE guide and of several case studies of real designs.[4] The review found seven barriers to documenting that agreed levels of fire safety had been reached.[4] The first two are performance criteria that are not established or agreed, and an unspecified process for choosing design fires.[32] Others are assumptions about human behaviour, poorly documented limits of fire models and model outputs given as single values.[32] The last two are engineers working beyond their expertise and the lack of a standard way to include the reliability of fire protection systems.[32]

Each barrier can lead to switchover, in which reasonable changes in inputs, scenarios or parameters change the decision on whether a design is acceptable.[4] In one example, two engineers who had both followed the current design guidelines for real buildings chose very different performance criteria.[32] Because model predictions are compared with such criteria, the same design can pass under one set and fail under another.[32]

Changed criteria, scenarios, behaviour and model assumptions lead to different acceptability outcomes.
Uncertainty can change a design from acceptable to unacceptable. Based on Notarianni (2002), pp. 5-43–5-44.

Human behaviour is a particular source of uncertainty. Proulx (2002) warns that research has shown some traditional assumptions about behaviour in fires to be wrong.[33] He also cites the observation that the hydraulic model of evacuation assumes occupants who are alert, able-bodied and ambulatory, and deals only with movement, not with the time people take to start.[33] Notarianni adds that one internationally used egress model assumes that all occupants are readily mobile and leave as soon as they hear an alarm.[32] Experience shows that this is often not the case.[32]

The handbook also has practical limits. Some of its equations, tables and charts keep US customary units because their data were originally developed in those units.[13] Its notice states that neither the publisher nor the authors guarantee the accuracy or completeness of the contents, and that they supply information and opinion rather than engineering services.[2] Where such services are needed, the notice advises seeking the help of an appropriate professional.[2]

Ethics and professional practice

One of SFPE's contributions to ethics in fire safety engineering is its Canon of Ethics for Fire Protection Engineers, which the IFEG quote in part.[34] Its preamble calls fire protection engineering an important learned profession whose work has a direct and vital impact on the quality of life of all people.[34] The services of fire protection engineers therefore require honesty, impartiality, fairness and equity, and must be dedicated to protecting and enhancing public safety, health and welfare.[34] Engineers are expected to maintain and constantly improve their competence and to act with balanced regard for the interests of the public, clients, employers, colleagues and the profession.[34]

Three fundamental principles follow from the preamble. Fire protection engineers use their knowledge and skill for the enhancement of human welfare.[34] They are honest and impartial and serve the public, their employers and their clients with fidelity.[34] They also strive to increase the competence and prestige of their profession.[34] The IFEG state that the canon deals with professional issues outside their own scope and should be consulted as appropriate.[6]

SFPE also has a role in education. After its World Trade Center investigation, NIST named SFPE in 2005 among the organisations affected by its recommendation to develop continuing education for fire protection engineers, structural engineers and architects.[35] It also named SFPE for training material on computational fire dynamics and thermostructural analysis tools.[35] For NIST's report on the active fire protection systems of the World Trade Center, an SFPE engineering programmes manager supplied introductory and summary material.[36] Its purpose was to give all readers a common basis for understanding the results.[36]

Relationship with NFPA and with regulation

SFPE and NFPA are separate organisations with different roles. NFPA develops and publishes consensus codes and standards, whereas NIST groups SFPE with the organisations that represent engineers.[9][1] The IFEG list the two as distinct bodies that publish fire engineering knowledge.[3] They work together on publications: SFPE holds the copyright of the SFPE Handbook and NFPA publishes it.[2] NIST also named both in 2005 for work on standard methods for multi-floor design fire scenarios.[25]

SFPE guides and standards are not regulations in themselves. A NIST report on the World Trade Center explains that trade associations and professional societies develop practices that may guide how buildings are designed and built.[37] Such practices are not strictly enforceable unless a code refers to them, but they represent a consensus of what is reasonable or prudent.[37] Where a regulatory document does refer to SFPE material, it does so selectively. C/VM2 (2025), for example, cites the SFPE Handbook and an SFPE guide only in particular comments and clauses.[16] Compliance with the New Zealand Building Code still requires each of its own ten design scenarios to be satisfied.[31]

C/VM2 is meant for professional fire engineers who are proficient in fire engineering modelling methods.[31] They are expected to apply appropriate judgement to model inputs and results.[31] The IFEG likewise allow engineering judgement where valid methods or verified data are not available, but require all quantification based on it to be justified in detail.[38] For the United States, they give the fire engineer the task of evaluating a performance design and the authority having jurisdiction the task of assessing and approving it.[39]

See also

Notes

  1. ↑ 1.0 1.1 1.2 1.3 National Institute of Standards and Technology (2005), p. 201.
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 DiNenno et al. (2002), pp. iii–iv.
  3. ↑ 3.0 3.1 3.2 National Research Council of Canada et al. (2005), Part 0 (United States), pp. 0.5-6–0.5-10.
  4. ↑ 4.0 4.1 4.2 4.3 4.4 4.5 4.6 Notarianni (2002), p. 5-42.
  5. ↑ 5.0 5.1 5.2 Australian Building Codes Board (2020a), Data Sheet B1, p. 12.
  6. ↑ 6.0 6.1 6.2 6.3 6.4 6.5 National Research Council of Canada et al. (2005), Part 0 (United States), pp. 0.1-1–0.1-4.
  7. ↑ 7.0 7.1 Ministry of Business, Innovation and Employment (2025b), pp. 26, 33.
  8. ↑ 8.0 8.1 8.2 Australian Building Codes Board (2020b), pp. 109, 113.
  9. ↑ 9.0 9.1 Iqbal and Salley (2004), p. E-1.
  10. ↑ 10.0 10.1 10.2 10.3 10.4 10.5 10.6 10.7 National Research Council of Canada et al. (2005), Part 0 (United States), pp. 0.3-1–0.3-2.
  11. ↑ National Research Council of Canada et al. (2005), Part 0 (New Zealand), p. 0.4-2.
  12. ↑ 12.0 12.1 DiNenno et al. (2002), pp. v–viii.
  13. ↑ 13.0 13.1 13.2 13.3 13.4 13.5 DiNenno et al. (2002), pp. ix–x.
  14. ↑ Iqbal and Salley (2004), p. xxxvii.
  15. ↑ National Research Council of Canada et al. (2005), p. 2.5-2.
  16. ↑ 16.0 16.1 Ministry of Business, Innovation and Employment (2025b), p. 61.
  17. ↑ Van Rossum (2027), §7.4.
  18. ↑ 18.0 18.1 Van Rossum (2027), §6.4.
  19. ↑ 19.0 19.1 19.2 19.3 19.4 Beyler (2002a), p. 3-272.
  20. ↑ Beyler (2002a), pp. 3-308, 3-313.
  21. ↑ Ministry of Business, Innovation and Employment (2025b), pp. 34–35.
  22. ↑ Stroup et al. (2016), p. 1-3.
  23. ↑ Iqbal and Salley (2004), p. xxxix.
  24. ↑ 24.0 24.1 National Research Council of Canada et al. (2005), p. 2.8-4.
  25. ↑ 25.0 25.1 National Institute of Standards and Technology (2005), pp. 206, 212.
  26. ↑ Notarianni (2002), p. 5-60.
  27. ↑ Meacham (2002), p. 5-161.
  28. ↑ Watts and Hall (2002), pp. 5-6–5-7.
  29. ↑ 29.0 29.1 National Research Council of Canada et al. (2005), Part 0 (United States), p. 0.2-9.
  30. ↑ National Research Council of Canada et al. (2005), Part 0 (United States), pp. 0.3-8–0.3-9.
  31. ↑ 31.0 31.1 31.2 31.3 Ministry of Business, Innovation and Employment (2025b), p. 7.
  32. ↑ 32.0 32.1 32.2 32.3 32.4 32.5 32.6 Notarianni (2002), pp. 5-43–5-44.
  33. ↑ 33.0 33.1 Proulx (2002), pp. 3-342–3-343.
  34. ↑ 34.0 34.1 34.2 34.3 34.4 34.5 34.6 National Research Council of Canada et al. (2005), Part 0 (United States), p. 0.4-2.
  35. ↑ 35.0 35.1 National Institute of Standards and Technology (2005), pp. 222–223.
  36. ↑ 36.0 36.1 Evans et al. (2005), p. xxvii.
  37. ↑ 37.0 37.1 Lew et al. (2005), p. 142.
  38. ↑ National Research Council of Canada et al. (2005), p. 1.8-10.
  39. ↑ National Research Council of Canada et al. (2005), Part 0 (United States), p. 0.2-11.

References

  • Australian Building Codes Board. (2020a). Data sheets: Fire Safety Verification Method (Handbook annex, Print version 1.1).
  • Australian Building Codes Board. (2020b). Handbook: Fire Safety Verification Method (Print version 1.1).
  • Beyler, C. L. (2002a). Fire hazard calculations for large, open hydrocarbon fires. In P. J. DiNenno, D. Drysdale, C. L. Beyler, W. D. Walton, R. L. P. Custer, J. R. Hall Jr., & J. M. Watts Jr. (Eds.), SFPE handbook of fire protection engineering (3rd ed., pp. 3-268–3-314). National Fire Protection Association; Society of Fire Protection Engineers.
  • DiNenno, P. J., Drysdale, D., Beyler, C. L., Walton, W. D., Custer, R. L. P., Hall, J. R., Jr., & Watts, J. M., Jr. (Eds.). (2002). SFPE handbook of fire protection engineering (3rd ed.). National Fire Protection Association; Society of Fire Protection Engineers.
  • Evans, D. D., Peacock, R. D., Kuligowski, E. D., Dols, W. S., & Grosshandler, W. L. (2005). Active fire protection systems (NIST NCSTAR 1-4). National Institute of Standards and Technology.
  • Iqbal, N., & Salley, M. H. (2004). Fire Dynamics Tools (FDTs): Quantitative fire hazard analysis methods for the U.S. Nuclear Regulatory Commission Fire Protection Inspection Program (NUREG-1805). U.S. Nuclear Regulatory Commission, Office of Nuclear Reactor Regulation.
  • Lew, H. S., Bukowski, R. W., & Carino, N. J. (2005). Design, construction, and maintenance of structural and life safety systems (NIST NCSTAR 1-1). National Institute of Standards and Technology.
  • Meacham, B. J. (2002). Building fire risk analysis. In P. J. DiNenno, D. Drysdale, C. L. Beyler, W. D. Walton, R. L. P. Custer, J. R. Hall Jr., & J. M. Watts Jr. (Eds.), SFPE handbook of fire protection engineering (3rd ed., pp. 5-153–5-175). National Fire Protection Association; Society of Fire Protection Engineers.
  • Ministry of Business, Innovation and Employment. (2025b). Verification Method C/VM2: Framework for fire safety design (2nd ed.).
  • National Institute of Standards and Technology. (2005). Final report on the collapse of the World Trade Center towers (NIST NCSTAR 1).
  • National Research Council of Canada, International Code Council, Department of Building and Housing, & Australian Building Codes Board. (2005). International fire engineering guidelines (2005 ed.). Australian Building Codes Board.
  • Notarianni, K. A. (2002). Uncertainty. In P. J. DiNenno, D. Drysdale, C. L. Beyler, W. D. Walton, R. L. P. Custer, J. R. Hall Jr., & J. M. Watts Jr. (Eds.), SFPE handbook of fire protection engineering (3rd ed., pp. 5-40–5-64). National Fire Protection Association; Society of Fire Protection Engineers.
  • Proulx, G. (2002). Movement of people: The evacuation timing. In P. J. DiNenno, D. Drysdale, C. L. Beyler, W. D. Walton, R. L. P. Custer, J. R. Hall Jr., & J. M. Watts Jr. (Eds.), SFPE handbook of fire protection engineering (3rd ed., pp. 3-342–3-366). National Fire Protection Association; Society of Fire Protection Engineers.
  • Stroup, D., Lindeman, A., McGrattan, K., Peacock, R., Overholt, K., Joglar, F., LeStrange, S., & Montanez, S. (2016). Verification and validation of selected fire models for nuclear power plant applications: Supplement 1 (NUREG-1824, Supplement 1; EPRI 3002002182). U.S. Nuclear Regulatory Commission, Office of Nuclear Regulatory Research; Electric Power Research Institute.
  • Van Rossum, E. (2027). Introduction to Fire Safety Engineering. Fire Safety Academy.
  • Watts, J. M., Jr., & Hall, J. R., Jr. (2002). Introduction to fire risk analysis. In P. J. DiNenno, D. Drysdale, C. L. Beyler, W. D. Walton, R. L. P. Custer, J. R. Hall Jr., & J. M. Watts Jr. (Eds.), SFPE handbook of fire protection engineering (3rd ed., pp. 5-1–5-7). National Fire Protection Association; Society of Fire Protection Engineers.
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