An Unresolved Item (
URI) was opened regarding the adequacy of a 10 Code of Federal Regulation (CFR) 50.59 screening that was completed for the modification of Solid State Protection System. In 2013, a potential violation of
10 CFR 50.59(d)(1) was identified for the licensees failure to perform a full written
10 CFR 50.59 evaluation which provided the basis that the test or experiment did not require a license amendment. The inspectors identified five issues with potential adverse effects such as response time, Human System interface, software, testing and third party commercial vendor.
Enforcement Guidance Memorandum (EGM) 14-002, issued October 2, 2014 (
ADAMS Accession No.
ML14014A125), provided guidance on the use of
enforcement discretion to disposition Westinghouse pressurized water reactor (
PWR) licensee noncompliance with Title 10 of the Code of Federal Regulations (10 CFR), Section 50.59, Changes, tests and experiments, for plants that have installed digital complex programmable logic device (
CPLD)-based circuit boards in the solid state protection system (SSPS) without meeting the requirements of
10 CFR 50.59(c)(2)(vi) and/or
10 CFR 50.59(d)(1). The Action section of
EGM 14-002 lists four criteria for licensee to demonstrate before NRC will exercise the
enforcement discretion. A review was performed and the inspectors determined that the licensee met all the criteria listed in the Action section of the EGM to receive discretion for this issue and the
URI is closed.
