On October 02, 2013 (78 FR 60763), the Pipeline and Hazardous Materials Safety Administration (PHMSA) published a clarification notice on PHMSA’s policy regarding applications for firework device series. PHMSA has required separate applications for each individual firework device. Often one firework device has identical hazardous properties to another firework device that is intended to produce a similar result in a firework display. These similar firework devices are considered part of a series of firework devices. In this notice, PHMSA is clarifying its policy regarding firework device series applications, which details the categories of fireworks for which PHMSA firework series applications may be permitted, and the criteria necessary to be considered a firework series. PHMSA believes that by issuing fireworks approvals or certifications to firework device series, the application backlog will be reduced, the current level of safety will be sustained, and firework series will reach the market faster.