In the assembly process for automobile engines, at one stage in the process a gasket is placed between the two sections of the engine block before they are joined. If the gasket is damaged (e.g., bent, crimped), oil can leak from the cylinder chambers and foul the spark plugs, in which case the entire engine has to be disassembled and a new gasket inserted. The company wants to develop a p-chart with 2 σ limits to monitor the quality of the gaskets prior to the assembly stage. Historically, 2% of the gaskets have been defective, and management does not want the upper control limit to exceed 3% defective. What sample size will be required to achieve this control chart?