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NFPA 1122 applies to the design, construction, limitation of propellant mass and power, and reliability of model rocket motors and model rocket motor reloading kits and their components.

The 2002 edition of the Code contains changes intended to coordinate the three rocketry documents--NFPA 1122, 1125: Code for the Manufacture of Model Rocket and High Power Rocket Motors, and 1127: Code for High Power Rocketry. This has been accomplished by deleting redundant requirements that were contained in this document as well as NFPA 1125. This includes moving all model rocket motor testing and certification requirements from NFPA 1122 to NFPA 1125. In addition, the 2002 NFPA 1122 contains the new edition of the Model Rocket Safety Code.