Abstract: This paper discusses the key points in the engineering design of methyl methacrylate tank farm from the aspects of tank design, safety accessories, control system and the treatment of waste gas, waste water and waste solids. The three-level pressure protection measures including nitrogen seal system, breathing valve and emergency vent manhole for maintaining the stable pressure in storage tank are discussed in detail, the setup of closed discharge system for waste water and waste gas in tank farm is introduced, and some corresponding countermeasures are introduced for the polymerization of MMA, such as not using inner floating roof and controlling the storage temperature in tank, so as to ensure the long-term and safe operation of the tank farm and meet the latest environmental protection requirements

Key words: Methyl methacrylate/MMA, tank farm design, nitrogen seal, closed discharge