NFPA 101A-2019 Guide on Alternative Approaches to Life Safety.
1.3.3 The method described in this guide is an index method. Index methods are a type of qualitative risk assessment. Quanti- tative risk assessments can also be used to evaluate designs that are proposed as alternative approaches to life safety. For infor- mation on developing fire risk assessments, see the SFPE Engi- neering Guide to Fire Risk Assessment. Guidance on reviewing fire risk assessments can be found in NFPA 551. 1.3.4 For further information on alternative approaches to fire safety, see “Systems Approach to Fire-Safe Building Design,” Section 1, Chapter 9, of the 20th edition of the NFPA Fire Protec- tion Handbook and the SFPE Handbook of Fire Protection Engineer- ing, 5th edition, Chapter 82,“Fire Risk Indexing.” Chapter 2 Referenced Publications 2.1 General. The documents or portions thereof listed in this chapter are referenced within this guide and should be consid- ered part of the recommendations of this document. 2.2 NFPA Publications. National Fire Protection Association, 1 Batterymarch Park, Quincy, MA 02169-7471. NFPA 13, Standard for the Insalltion of Sprinkler Systems, 2016 Most health care facilities have repetitive arrangements so that a complete picture can be developed by evaluating typi‐ cal zones until all combinations are evaluated. The zones selec‐ ted should include the following: (1) Each type of patient zone having a different type of mobi‐ lity, density, or attendant ratio, as specified in Worksheet 4.7.2 (2) Each zone that represents a significantly different type of construction, finish, or protection system (3) Zones containing special medical treatment or support activities (e.g., operating suites, intensive care units, labo‐ ratories) (4) Zones not involving housing, treatment, or customary access for four or more inpatients simultaneously who are incapable of self-preservation; such zones should be eval‐ uated as follows: (a) Any zone, whether or not used for patient egress, shall be permitted to be evaluated on the same basis as a patient use zone. In such cases, the value of factor F in Worksheet 4.7.3 shall be assigned the value of factor L (“Zone Location”) from Worksheet 4.7.2. In such cases, Safety Parameter 10, “Emer‐ gency Movement Routes,” from Worksheet 4.7.6 shall be graded “deficient” if the exit capacity is less than that prescribed for the actual occupancy of the space and “<2 routes” if less than 75 percent of the prescribed exit capacity is present.NFPA 101A pdf download.