The Commission has issued the enclosed Amendment No. 19 to Facility

The amendment revises the Appendix A Technical Specifications (TSs) relating to Reactor Coolant System heatup and cooldown limitations. Specifically, Figures 3.4-2 and 3.4-3 are modified to show applicability of the curves up to 11.1 equavalent full-power years (EFPY), to provide revised RTNDT values at 11.1 EFPY at 1/4 and 3/4 thickness, and to indicate the copper content of the controlling material. These changes implement commitments made by North Atlantic Energy Corporation (letter G. Thomas to USNRC dated November 30, 1988) in response to Generic Letter 88-11. Bases Section 3/4 4.9 is revised to reflect the methodology applied to determine the P/T limits. A copy of the related Safety Evaluation is also enclosed. The Notice of Issuance will be included in the Commission's biweekly Federal Register notice. Sincerely, Original signed b