ML17037C692

Table 7.2-1 (Cont'D) 4 of 6

ML17037C692
Person / Time
Site:	Nine Mile Point
Issue date:	02/06/2017
From:	Niagara Mohawk Power Corp
To:	Office of Nuclear Reactor Regulation
References
Download: ML17037C692 (1)

Text

NMPNS-2 TABLE 7.2-1 (CONT'D)Line Isolated Instrument sensing line (not part of protection system)Number of Lines As required Approximate Pipe Size, In~Valves Per Line~Grou Valve Location Relative to Primary Containment Outside Outside Valve and/or Operator eM3 Flow check Hand Power to Ope~n,6)Spring Hand Power to~cc,c)Hand Isolation 1 Excess flow Closing Normal~Time 7,11,12)Status(9,lO)

Open)Open)))emarks Typical of Class B instrument lines which)AS do not form part of protection system Service air to drywell Instrumentgss to drywell Reactor Bldg.closed loop cooling water in Reactor Bldg.closed loop cooling water out Demineralized water in Drywell purge inlet Drywell main exhaust Drywell exhaust bypass Later 3-6 3-8 30 30 B B B B B B Inside Outside Inside Outside Outside Inside Outside Inside Inside Outside Inside Outside Ins id.e Outside Outside Hand Hand.Check AO MO Check MO MO Check MO AO butterfly AO butterfly AO butterfly AO butterfly AO Hand Hand Air/A-c D-c D-c A-c A-c A-c/Air A-c/Air A-c/Air A-c/Air A-c Hend Hand Process Spring D-c Process D-c A-c Process A-c Spring Spring Spring Spring Spring Reverse flow RM RM Reverse flow Reverse flow RM A>F A,F A>F A,F A,F Standard Standard Standard Standard Standard Standard Standard Standard Standard Standard Closed Closed Open Open Open Open Open Open Closed Closed Closed Closed Closed Closed Closed Only need during maintenance)AS As[AS (AS Suppression chamber purge inlet Suppression chamber exhaust 1 valve bypass Inside Outside Outside AO butterfly AO butterfly AO A-c/Air A-c/Air A-c Spring Spring Spring A,F A,F A>F Standard Standard Standard Closed Closed Closed Suppression chamber main exhaust Drywell air sample Suppression chamber air sample 1/2 1/2 B B B B Inside Outside Ins ia.e Outside Inside Outside AO butterfly AO butterfly SO valve SO valve SO valve SO valve A-c/Air A-c/Air A-c D-c A-c D-c Spring Spring Spring Spring Spring Spring A,F A>F A>F A,F A,F A>F Standard Standard Closed Closed Open Open Open Open iAS (AS hof6