Standard: UFC 3-520-05


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This UFC cites and supplements existing Government and commercial standards and specifications governing the architectural, mechanical, plumbing, and electrical requirements for design of stationary secondary battery installations. These batteries are operated on a continuous float charge and require ventilation to limit hydrogen gas concentrations.

Note: The additional requirements identified in MIL-HDBK 411B, Power and the Environment for Sensitive DoD Electronic Equipment, can apply to larger battery installations, such as for fixed Department of Defense (DoD) communications, data processing, and information systems facilities. However, this UFC has more stringent criteria with respect to hydrogen control, and conforms with current industry practices and standards (single fan versus dual fan criteria). Therefore, MIL-HDBK 411B is no longer required with respect to battery area design.


Unified Facility Criteria (UFC) 3-520-05 provides design guidance for stationary secondary battery installations. It serves as a planning, engineering, and design reference for professional facility planners, designers, and constructors, including DoD personnel and Government contractors. Designers and planners will use this document for individual project planning, for preparing engineering documentation, and for preparing contract documents for construction and renovation projects.

Organization: Unified Facilities Criteria
Document Number: ufc 3-520-05
Publish Date: 2008-04-14
Page Count: 21
Available Languages: EN
DOD Adopted: NO
ANSI Approved: NO
Most Recent Revision: YES
Current Version: YES
Status: Active

Document History

Document # Change Type Update Date Revision Status
UFC 3-520-05 Change Type: C1 Update Date: 2015-05-01 Revision: 15 Status: ACTV

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