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op is shown in Figure 7-9. Dual Pressure Indicating Transmitters (PIT) are shown feeding their output signals into a High Signal Selector. This redundancy may be provided for plants with three or more boilers to allow continued plant operations during maintenance or failure of one PIT. UFC 3-430-11 27 Apr 2021 45 Figure 7-1 Typical Pressure Control Loop UFC 3-430-11 27 Apr 2021 46 Figure 7-2 Typical Temperature Control Loop UFC 3-430-11 27 Apr 2021 47 Figure 7-3 Typical Level Control Loop UFC 3-430-11 27 Apr 2021 48 Figure 7-4 Typical Flow Control Loop UFC 3-430-11 27 Apr 2021 49 Figure 7-5 Typical Cross-Limited (Lead-Lag) Boiler Control System for a Single Fuel Using Full Metering with Oxygen Trim UFC 3-430-11 27 Apr 2021 50 Figure 7-6 Single Element Drum Level Control System UFC 3-430-11
UFC 3-430-11 27 Apr 2021 UNIFIED FACILITIES CRITERIA (UFC) APPROVED FOR PUBLIC RELEASE; DISTRIBUTION UNLIMITED BOILER PLANT INSTRUMENTATION AND CONTROL SYSTEMS UFC 3-430-11 27 Apr 2021 UNIFIED FACILITIES CRITERIA (UFC) BOILER PLANT INSTRUMENTATION AND CONTROL SYSTEMS Any copyrighted material included in this UFC is identified at its point of use. Use of the copyrighted material apart from this UFC must have the permission of the copyright holder. Indicate the preparing activity beside the Service responsible for preparing the document. U.S. ARMY CORPS OF ENGINEERS NAVAL FACILITIES ENGINEERING COMMAND (Preparing Activity) AIR FORCE CIVIL ENGINEER CENTER Record of Changes (changes are indicated by \1\ ... /1/) Change No. Date Location This UFC supersedes UFC 3-430-11 Boiler Control Systems,
27 Apr 2021 50 Figure 7-6 Single Element Drum Level Control System UFC 3-430-11 27 Apr 2021 51 Figure 7-7 Two Element Drum Level Control System (Not Permitted) UFC 3-430-11 27 Apr 2021 52 Figure 7-8 Three Element Drum Level Control System UFC 3-430-11 27 Apr 2021 53 Figure 7-9 Multiple Boiler Control Loop – Plant Master UFC 3-430-11 27 Apr 2021 54 APPENDIX A GLOSSARY A-1 ACRONYMS AC Alternating Current AFCEC Air Force Civil Engineer Center ANSI American National Standards Institute ASME American Society of Mechanical Engineers BIA Bilateral Infrastructure Agreement BPVC Boiler and Pressure Vessel Code Btu British Thermal Unit C Celsius CEM Continuous Emission Monitoring CO Carbon Monoxide CSD Controls and Safety Devices DoD Department of Defense DC Direct Current DCS Distributed Control S
Utility Monitoring & Control System (UMCS) Front End and Integration UFC 3-420-02 Compressed Air UFC 3-440-01 Facility-Scale Renewable Energy Systems Fueling Systems UFC 3-460-01 Design: Petroleum Fuel Facilities UFC 3-460-03 Petroleum Fuel Systems Maintenance MO-230 M&O of Petroleum Fuel Facilities UFC 3-410-04 Industrial Ventilation UFC 3-430-09 Exterior Mechanical Utility Distribution Central Plants UFC 3-430-11 Boiler Plant Instrumentation and Control Systems UFC 3-490-06 Elevators UFC 4-826-10 Design: Refrigeration Systems for Cold Storage UFC 3-430-01FA Heating & Cooling Distribution Systems CANCELLED UFC 3-401-01 28 July 2025 Change 2, 14 May 2026 3 CHAPTER 2 TECHNICAL REQUIREMENTS 2-1 DOCUMENTATION REQUIREMENTS Comply with the design analysis and drawing requirements in the UFC 3-4
UFC 3-240-03N (MIL-HDBK-1138), Wastewater Treatment System Operation and Maintenance Augmenting Handbook, 16 January 2004 UFC 3-240-13FN, Industrial Water Treatment Operation and Maintenance, 25 May 2005 UFC 3-420-01, Plumbing Systems, 23 June 2010 UFC 3-430-09, Exterior Mechanical Utility Distribution, 16 January 2004 UFC 3-460-01, Design: Petroleum Fuel Facilities, 16 August 2010 UFC 3-460-03, Maintenance of Petroleum Systems, 21 January 2003 UFC 3-601-02, Operation and Maintenance: Inspection, Testing, and Maintenance of Fire Protection Systems, 8 September 2010 UFC 4-020-01, DoD Security Engineering Facilities Planning Manual, 11 September 2008 UFC 4-020-02FA, Security Engineering: Concept Design, 1 March 2005 UFC 4-020-03FA, Security Engineering: Final Design, 1 March 2005 UFGS 33 51
l Systems UFC 3-430-05, Natural Gas and Liquified Petroleum Gas (LPG) Distribution Pipelines UFC 3-501-01, Electrical Engineering UFC 3-550-01, Exterior Electrical Power Distribution UFC 3-600-01, Fire Protection Engineering for Facilities UFC 3-410-01, Heating, Ventilating, and Air Conditioning Systems UFC 4-010-06, Cybersecurity of Facility-Related Control Systems UNIFIED FACILITIES GUIDE SPECIFICATIONS https://www.wbdg.org/dod/ufgs UFGS 23 07 00, Thermal Insulation for Mechanical Systems UFGS 33 11 00, Water Utility Distribution Piping UFC 3-130-05 16 January 2025 103 UFGS 33 30 00, Sanitary Sewerage UNITED STATES GEOLOGICAL SERVICE https://waterdata.usgs.gov/nwis USGS, Water Data for the Nation OTHER “Calculation of Heat Loss from Pipes,” Utilities Delivery in Arctic Regions, Report No
200-01, DoD Building Code UFC 3-420-01, Plumbing Systems UFC 3-430-11, Boiler Plant Instrumentation and Control Systems UFM 3-230-13 5 February 2026 245 G-2 NONGOVERNMENT PUBLICATIONS. ASTM INTERNATIONAL https://www.astm.org/ ASTM D2688-15e1, Standard Test Method for Corrosivity of Water in the Absence of Heat Transfer (Weight Loss Methods) ASTM E1146, Standard Specification for Muriatic Acid (Technical Grade Hydrochloric Acid) AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) https://www.asme.org/ ASME PTC 19.11, Steam and Water Sampling, Conditioning, and Analysis in the Power Cycle NATIONAL ASSOCIATION OF CORROSION ENGINEERS (NACE) TPC Publication 1, Cooling Water Treatment Manual, 1990, ISBN 0-915567-69-5
eplacement] Replace Section 1001.1 with the following: CANCELLED UFC 3-410-01 28 July 2025 Change 1, 23 January 2026 46 “1001.1 Scope. This chapter governs the installation, alteration and repair of boilers, water heaters and pressure vessels. Use Chapter 10 and UFC 3-430-11 for boilers. If any conflict occurs between Chapter 10 and the above UFC, the requirements of the UFC take precedence.” 3-2.9.2 Section 1004 Boilers. \1\ /1/1004.3 - Working clearance [Addition] Insert after the last sentence of Section 1004.3: “Clearance around boilers must be per ANSI/NB23, National Board Inspection Code, Part 1, Sections 2 and 3, each with respective paragraphs entitled “Clearances.” 3-2.9.3 Sections 1005 Boiler Connections. 1005.3 Feedwater systems [Addition] “Provide heaters for the de-aeration of
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