In his first continuous sampling plan , H. F. Dodge showed that his procedure guarantees an Average Outgoing Quality Limit (AOQL) with the assumption that the process is in a state of statistical control. It is proved in this paper that the Dodge procedure, without the assumption of control, guarantees an AOQL, although different from that specified by Dodge.
Gerald J. Lieberman. "A Note on Dodge's Continuous Inspection Plan." Ann. Math. Statist. 24 (3) 480 - 484, September, 1953. https://doi.org/10.1214/aoms/1177728988