The REVISED 2013 standard NFPA 1981 – Standard on Open-Circuit Self-Contained Breathing Apparatus for Emergency Services was officially changed in 12/2012. Manuafctuer’s are now making SCBA’s that will meet the new NFPA requirements for Open-Circuit SCBA’s. The new standard contains some significant chnages that will certainly aid the user of open-circuit SCBA’s. Those changes include: