Safety and licensing requirements for LMFBR decay heat removal systems are identified. Three types of requirements are considered: (1) system configuration requirements (i.e., redundancy and diversity), (2) sizing requirements (which dictate heat removal capacity), and (3) safety classification requirements (which dictate code class, quality assurance requirements, seismic category, etc.). The requirements are developed based on current Government regulations and industry standards, supplemented as necessary by risk and reliability considerations.