NFPA has issued the following errata on NFPA 2001, Standard on Clean Agent Fire Extinguishing Systems, on October 26, 2015: NFPA 2001, Errata 2001-15-2, referencing 5.5.2.1(a) and (b) equations on the 2015 edition An errata is a correction issued to an NFPA Standard, published in NFPA News, Codes Online, and included in any further distribution of the document.