I need clarification: your question is "UFC 3-520-02" — a document title — but no specific question about that publication's content.
What specific requirement, design standard, or procedure from UFC 3-520-02 (Facility Energy System Resilience and Reliability) do you need answered?
The passages provided show UFC 3-520-02 covers reliability metrics (MTBF, MTTR, availability calculations) [UFC 3-520-02 27 July 2023 Change 1] and is referenced by multiple Air Force and DoD publications as the criteria for facility energy system design. Please ask your specific question so I can apply the relevant rule.
Unofficial — answered from indexed publication text, which may be incomplete or out of date. Your MAJCOM/unit supplement may be stricter. Verify the official PDF before acting or writing a finding.
DAFI 21-101 para 15.8.11, p. 268 (effective/current as of 2026-03-16)ates. (T-2) 15.8.9.1. Electrical power system design will be IAW AFMAN 32-1062, Electric Systems, Power Plants and Generators, AFMAN 32-1065. Reference UFC 3-501-01, Electrical Engineering, UFC 3-520-01, Interior Electrical Systems, UFC 3-530-01, and UFC 3-550- 01, Exterior Electrical Power Distribution, UFC 3-600-01, Fire Protection Engineering for Facilities, and Engineering Technical Letter 02-15, Fire Protection Engineering Criteria - New Aircraft Facilities. 15.8.10. The cost of running power (such as, lighting, and electrical) from prime or temporary power sources to the sunshades will be included in the cost estimate and will be borne by the owning unit. (T-2) 15.8.11. In no case will the loss of parking spots resulting from the purchase or installation of aircraft sunshades be a pr
No supplement passage retrieved — check the supplement chain on the pub page before citing.
No federal/DoD passage retrieved.