[en] This report documents the technical evaluation of the proposed changes to the plant reactor protection system by the licensee of Pilgrim Nuclear Power Station, Unit 1, to account for single-loop plant operation. This evaluation is restricted to only the electrical, instrumentation, and control design aspects of proposed changes to the plant technical specifications for single-loop operation beyond 24 hours. The conclusion of the evaluation is that the Pilgrim Nuclear Power Station, Unit 1, license amendment for single-loop opertion has met the review criteria provided anomalous control room indications are corrected or warning-tagged for the duration of single-loop operations and the title or position of the appropriate technical individual to make the independent check of the setpoint adjustment be identified