The 2011 NFPA 31 now covers all liquid fuels -- not just petroleum-based oils -- that are approved for use in oil-burning appliances, such as boilers, air heaters, and water heaters.
Updated to reflect industry developments, the 2011 NFPA 31: Standard for the Installation of Oil-Burning Equipment is the new industry benchmark for correct installation of liquid fuel-burning appliances in industrial, commercial, and residential occupancies.
Substantive changes and improvements in the 2011 edition include:
- Expanded section on acceptable fuels for liquid fuel-burning appliances now includes biodiesel blends, biofuels, and recycled lubrication oil, in addition to No. 2 fuel oil.
- Specifications for minimum thickness for different diameters of steel pipe vent connectors
- Major revisions to Chapter 7, Liquid Fuel Tanks, to consolidate requirements for fill and vent openings; conform to leak testing and inspection requirements of NFPA 30; and address removal of fuel oil tanks from service, with a provision to allow keeping the tank on site to allow for future use
- Major technical and editorial revisions to Chapter 8: Heating Fuel Piping Systems, including consolidation of vent piping requirements into one section; consolidation of piping requirements for cross-connected tanks; consolidation of requirements for special piping arrangements; and specific requirements for proper use of audible tank fill alarms (tank vent whistles)
This widely-used Standard important working tool for anyone involved with the design or installation of liquid fuel-burning appliances and their fuel supply. (Softbound, 58 pp., 2011)
NFPA®'s Redline PDF contains both the current NFPA document and a Redline version of the document which shows changes from the previous edition marked in color. With the Redline you can quickly spot changed sections and tell specifically what has been changed from the previous edition, saving time and confusion.
- Changed sections are marked with a vertical rule.
- Deleted material is shown in red strikethrough type.
- New material appears in blue underscored type.
Sample (NEC® 2014)
411.2411.3 Definition. Low-Voltage Lighting Systems.
(A) General. Lighting Ssystems Ooperating at 30 Volts- volts or Less. A lighting system consisting less shall consist of an isolating power supply, the low-voltage luminaires, and associated equipment that are all identified for the use. The output circuits of the power supply are shall be rated for not more than 25 amperes and operate at 30 volts (42.4 volts peak) or lessmaximum under all load conditions.
(B) Class 2. Listed Class 2 lighting equipment shall be rated in conformance with Chapter 9, Table 11(A) or Table 11(B).
411.3411.4 Listing Required. Lighting systems operating at 30 volts or less shall comply with 411.3(A)411.4(A) or
411.3(B).411.4(B). Class 2 power sources and lighting equipment connected to Class 2 power sources shall be llisted.