What actions were taken at VY as a result of the ISA at Maine Yankee?
After the Maine Yankee ISA, we evaluated the computer programs at all plants, including VY, to ensure that the issues found at Maine Yankee did not exist at other plants. Two additional recommendations related to engineering inspections resulted. They were to (1) conduct design inspections at selected facilities and (2) modify the inspection procedure (IP-37550) to add periodic “vertical slice” engineering inspections. The first recommendation was subsumed in the Reactor Oversight Process (ROP) as an engineering baseline inspection. The second recommendation spurred the creation (along with the outcomes from the Millstone experience) of the architect-engineer (A-E) inspection program. A-E inspections were eventually conducted at 21 plants, including VY. It’s important to note that the NRC also issued a request for information to licensees pursuant to 10 C.F.R. § 50.54(f) in October 1996, regarding the adequacy and availability of design-basis information. The purpose of this request wa
