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DS 1-12
Ceilings and Concealed Spaces Interim revision. Minor editorial changes were made.
DS 1-15
Roof-Mounted Solar Photovoltaic Panels Interim revision. Changes include the following:
• Provided guidance on rooftop photovoltaics combined with vegetative roofs and agrivoltaics.
• Provided guidance on arc and ground fault protection.
• Provided guidance on space separations for skylights and elevated modules.
DS 1-20
Protection Against Exterior Fire Exposure This document has been completely revised. Significant changes include the following:
• Updated for consistency with FM Data Sheet 1-42, MFL Limiting Factors, and other resources .
• Updated exposure sprinkler design criteria based on recent research.
• Updated FM exposure fire loss information.
• Removed information regarding hazards created by vehicles when buildings are constructed over highways.
DS 2-0
Installation Guidelines for Automatic Sprinklers Interim revision. Changes include the following:
• The guidelines for when sprinkler protection is recommended within ceiling pockets has been updated.
• Editorial changes have been introduced to better clarify the recommendations offered in this data sheet.
DS 2-8
Earthquake Protection for Water-Based Fire Protection Systems Interim revision. Changes include the following:
• Modified four-way riser sway brace spacing guidance to align with NFPA 13 (Section 2.2.1.1.2.3).
• Modified “G” factor values for sway brace design to align with ASCE 7-2022 (Section 2.2.1.2.2).
• Made minor editorial changes.
DS 2-81
Fire Protection System Inspection, Testing and Maintenance Interim revision. Significant changes include:
• Added recommendations regarding the use of automated pump testing in Section 2.9.
• Added Section 3.1.11.3 to provide supporting material for the automated pump testing.
DS 3-7
Fire Protection Pumps Interim revision. Minor editorial changes were made.
DS 3-10
Private Fire Service Mains and Connections (New Title) Full revision. The following changes were made:
• Changed the name of the data sheet to “Private Fire Service Mains and Connections”.
• Improved the definition of private fire service water mains.
• Updated installation guidance for positioning underground mains beneath railroad tracks.
• Updated thrust block guidance for fully restrained pipes.
• Added new guidance for thrust blocks used with plastic piping.
DS 3-26
Fire Protection for Nonstorage Occupancies Interim revision. Added new Section 2.4, Ignition Source Control. (Moved from FM Data Sheet 5-21 that was made obsolete.)
DS 5-4
Transformers Interim revision. Changes include the following:
• Added new recommendation in Section 2.1.0 of dry-type condenser bushings for new installations.
• Added new recommendation in Section 2.1.4 for replacement strategy of critical transformers.
• Added new recommendation in Section 2.1.8 to provide spare condenser bushings as part of equipment breakdown spare for transformers rated 100 MVA and above.
• Clarified the guidance in Section 2.1.5 for on-line condition monitoring recommendations, including FM Approved monitoring systems.
DS 4-12
Foam Extinguishing Systems Interim revision. The following changes were made:
• Reformatted Section 2.1, Introduction, to add general recommendations for the inclusion of medium and high-expansion foam systems.
• Updated Section 2.6.4.17, Alternate Test Methods, to include test liquids for Planit Safe that are allowable for SFFF and AR-SFFF.
• Updated viscosity information in Sections 2.5.4 and 3.4.5 on the compatibility of SFFF and AR-SFFF concentrates for use with variable viscosity proportioners.
DS 5-32
Data Centers and Related Facilities Interim revision. The following changes were made:
• Reference to FM Data Sheet 1-8, Antenna Towers and Signs, was removed; applicable recommendations were moved to FM Data Sheet 1-28, Wind Design.
• References to FM Data Sheet 1-45, Air Conditioning and Ventilating Systems, were removed.
DS 5-33
Lithium-Ion Battery Energy Storage Systems Interim revision. Changes include the addition of FM Approved off-gas detection and clarification of fire protection recommendations for outdoor containerized BESS.
DS 7-11
Conveyers Interim revision. Significant changes include:
• Clarified scope in Section 1.0.
• Consolidated and revised belt width, requiring sprinklers installed beneath in Section 2.2.3.5.
• Clarified fire protection recommendations in Section 2.1.7 for conveyors entering a building or passing through a fire wall.
• Defined different conveyor types in Appendix A.
DS 7-15
Garages Interim revision. Added recommendations on EV charging stations (Section 2.1.1) for electric vehicles (EV).
DS 7-29
Ignitable Liquid Storage in Portable Containers Interim revision. Guidance on lecithins has been added in Section 2.1.3.10. These products can be treated as very high flash point liquids.
DS 8-9
Storage of Class 1, 2, 3, 4 and Plastic Commodities Interim revision. Minor editorial changes were made.
DS 8-33
Carousel Storage and Retrieval Systems Interim revision. Minor editorial changes were made.
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