ML17037C785

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

ML17037C785
Person / Time
Site:	Nine Mile Point
Issue date:	02/06/2017
From:	Niagara Mohawk Power Corp
To:	Office of Nuclear Reactor Regulation
References
Download: ML17037C785 (1)

Text

NMPNS-2 TABLE 7.2-1 (CONTtD)Line Isolated Instrument sensing line (not part of protection system)Service air to drywell Number of Lines As required Approximate Pipe Size, In.Valves Per Line~Grou B B Valve Location Relative to Primary~tt t Outside Outside Inside Outside Valve and/or Operator~xpe~6 Flow check Hand Check AO Power to~en tj>6)Spring Hand, Air/A-c Power to~ci Hand Process Spring Isolation~SS 1 Excess flow RM Reverse flow RM Standard Open Open Closing Normal~TŽe 7 11,12)Status(9,IO)

Open)Open)))emarks Typical of Class B instrument lines which do not form part of protection system Instrument air to drywell Reactor Bldg.closed loop cooling water in Later Inside Outside Outside Check AO MO Air/A-c A-c Process Spring A-c Reverse flow RM Standard Standard Open Open Open Reactor Bldg.closed loop cooling water out Demineralized water in Drywall purge inlet Drywell main exhaust Drywell exhaust bypass 24 B B B B B B Ihltside Inside Outside Ins id.e Outside Inside Outside Outside MO Check MO AO butterfly AO butterfly AO butterfly AO butterfly AO A-c A-c A-c/Air A-c/Air A-c/Air A-c/Air A-c Process A-c Spring Spring Spring Spring Spring Reverse flow RM A>F,Z A,F,Z A>F>Z Standard Standard Standard Standard Standard Standard Standard Open Closed Closed Closed Closed Closed Closed Closed Suppression chamber purge 1 inlet Suppression chamber exhaust 1 valve bypass Suppression chamber main exhaust Drywell air sample 24 1/2 Inside Outside Outside Inside Outside Inside Outside AO butterfly AO butterfly AO AO butterfly AO butterfly SO valve SO valve A-c/Air A-c/Air A-c A-c/Air A-c/Air A-c D-c Spring Spring Spring Spring Spring Spring Spring A>F,Z A>F>Z A,F,Z A,F,Z Standard Standard Standard Standard Standard Closed Closed Closed Closed Closed Open Open Suppression chamber air sample Inside Outside SO valve SO valve A-c D-c Spring Spring A>F>Z Open Open 4of6