ML18079A178

Forwards Revision to Radiation Monitoring Sys Submitted on 781101.Revised Info Will Be Incorporated Into FSAR in Amend to Application

ML18079A178
Person / Time
Site:	Salem
Issue date:	04/23/1979
From:	MITTL R L Public Service Enterprise Group
To:	PARR O D Office of Nuclear Reactor Regulation
References
NUDOCS 7904300355
Download: ML18079A178 (6)

Text

Public Service Electric and Gas Company 80 Park F)laco Newark. N.J. 07101 Pho11e 201 430-7000 April 23, 1979 Director of Nuclear Reactor Regulation U. S. Nuclear Regulatory Commission Washington, D. C. 20555 Attention: Olan D. Parr Light Water Reactors Branch 3 Division of Project Management Gentlemen:

RESPONSE TO REQUESTS FOR ADDITIONAL INFORMATION NO. 2 UNIT SALEM NUCLEAR GENERATING STATION DOCKET NO. 50-3ll Public Service Electric and Gas hereby submits sixty (60) copies of its revision to the No. 2 Unit Radiation Monitoring System submitted on November 1, l978 . . This information will be incorporated into the Salem FSAR in an amendment to our application.

Attachment R1/Ji1' R. L. Mittl General Manager -Licensing and Environment and Construction 79043003ss The Energv

\l ------I ! r Control Room Intake Duct (Chan1Hd 2-nlB) 'l'his cbannel continuously monitors lhc: Control Hoom ventl lat ion system intake duct. Upon a higli radiation signal, this monitor initiates isolation of the ventilation system and actuates the Emergency Air Conditioning System which recirculatE=s the air through charcoal filters. This is a safety-related unit with a vital power supply. Either monitor 2-RlB or area monitor 2-HlA can initiate Control Room ventilation isolation.

Containment Sampling System (Channels 2-RllA, 2-Rl2A and 2-Rl2B) The Containment Sampling System consists of three radiation monitors -a particulate monitor, a gaseous monitor, and an iodine monitor. The system utilizes a pump to draw a continuous air sample from the containment atmosphere.

The air sample is routed by the three radiation monitors and then returned to the containment.

Containment isolation valves are providGd for the sampling system. The particulate monitor detects particulate activity on a moving filter tape mechanism.

The iodine monitor detects the iodine adsorbed in an impregnated charcoal filter cartridge.

Tbe gaseous monitor .detects noble gas activity in the air after it has passed through the particulate filter and iodine cartridge.

This monitor does not have the switching provisions described for the No. 1 Unit Containment or Plant Vent Monitoring System. A separate Plant Vent Sampling System is provided for No. 2 Unit.. SNGS-FSAR Units 1 & 2 11. 2-34 Amcnd1:1c11t

'1 P7o lJB '1:i Chlu\iN:::L TYPE 2-RlA Area 2-RlB Process 2-n.2 Area ,\rea 2-RS Area 2-R7 Area 2-R9 Area 2-RlOA Area 2-RlGB Area 2-HllA Process 2-12A Process 2-Rl28 Process 2-RlJA Process P78 140 05/06 DESCRIPTION Control Room Control Room Vent Duct Containment Charging Pump Room Fuel Handling Building Incore Seal Table Fuel Handling Building Containment Personnel

!latch Containment Personnel llatch Containment Particulate Containment Noble Gas Containment Iodine 21 Fan Cooler Service Water Discharge TN3LE 11. 2-7 NO. 2 u-JIT R/\DIATION MON!TO!!ING SYSTEM DETECTOR GM Tube Beta Scint. GM Tube GM Tube GM Tube GM Tube GM Tube G"I Tube GM Tube Beta Scint. Beta Scint. and GM Tube. Ga!T.la Scint. and Sliiddw G.:rnma Scint. RANGE/SENSITIVITY 10-l -104 mH/hr lo-6 uCi/cc 133xe lo-1 -104 mR/hr 10-l -io*I mR/lir 10-l -104 mR/hr 10-l -10 4 mR/hr lo-1 -104 mR/hr 10-l -104 mH/hr 1D-11 uci/cc 137cs 10-G uCi/cc 133 xe lo-1 1ucii/cc 131 r Gamma Scint. lo-7 uCi/cc 137cs VIT!\L x x x x x x x x x x x x x rowm CONTROL FUNCTIONS/INT:::HLOCKS Isolate Control Room Ventilation Isolate Control Ventilation Intiates Qiarcoal Filtration ard Evacuation Horns in Fuel Handling Building.

Initiates Charcoal Filtration and Evacuation Horns in Fuel H<indling Buildin<J.

l\ctuutes High Radiation Si<Jn at Hatch Actuates lligh Radiation Sign at !latch Contairu11ent Ventilation Isolation Containment Ventilation Isolation Contuinment Vent.i lation !solution

'

T1\BLE 11.2-7 NO. 2 UNIT RADIATION MONITORING (Continued)

CBA.".:Nl::L TYPE DESCRIPTION DE,"l'ECTOH RANGE/SENS

!TI VITY Special 4 9 2-R21 Area Containment High Range 10 -10 mR/hr 2-R24A Filter Seal Water Injection Ion Chamber 10-l -10 6 mH/hr Filter 2-R24B Filter Seal Water Injection Ion Chamber 10-l -106 mR/hr Filter 2-R25 Filter Seal Water Filter Ion Chamber 10-l -106 mR/hr 2-R26 Filter Reactor-Coolant Filter Ion Chamber 10-1 -106 mR/hr 2-R27 Filter Liquid Waste Filter Ion Chamber 10-l 106 mR/hr 2-R2B Filter Spent Fuel Pit Filter Ion Chamber 10-l -106 mR/hr 2-R29 Filter Spent Fuel Pit Skiuuner Ion Chamber 10-1 -106 mR/hr Filter 2-R30 Filter Refueling Water Purifi-Ion Chamber 10-1 -106 mH/lir cation Filter 2-R31 Process Letdown Line GallUTla Scint 10-6 uCi/cc 137cs 2-H321\* Area Fuel llandliny Crane GM Tube 10-l -104 mH/hr 2-R32i3* Area Cask Handling Crane GM Tube 10-l -104 mll/hr *Local Unly -Not Connected to Central l'roces:;inCJ System P78 l41J SYSTEM VI'l'l\L FQWER CONTHOL x x x x x x x x x x Prevents Prevents FUNCTIONS/INTEHLCX::KS Upward Crane Movement U!Jward Crane Movement r . e e CHANNI::L TYPE DESCRIPTION 2-R33 Filter Ion Exchange Filter 2-R34 Area Mechanical Penetration Area 2-R35 Process Steam Generator Blow-down Filter Discharge 2-R36 Process Evaporator and Feed Preheater Condensate 2-R38 Filter Steam Generator l.llowdown Fi 1 ter 2-R40 Filter Condensate Filter 2-R41 Process Plant Vent Particulate 2-R41B Process Plant Vent Iodine 2-R41C Process Plant Vent Noble Gas 2-42A Area 21 Waste Gus Decay Tank 2-428 Area 22 Waste Gas Dec<iy Tank 2-42C Area 23 Waste Gas Decay Tank 2-42D Area 24 Waste Gas Decay Tank P78 140 11/12 T!IBLI:: 11.2-7 NO. 2 UNIT MDIATION MONITORING SYSTl::M (Continued) oi::n.:croH VITAL Ion Chamber 10-1 -10 6 mH/hr x Ion 01amber 10-l -106 mil/hr x Garrrna Scint. 10-7 uCi/cc 137cs x Gar.una Sc int. lo-6 uCi/cc 137cs x Ion Chamber iu-1 -10 6 mR/hr x Ion Chamber io-1 -10 6 mR/hr x Beta Scint. lo-11 uci/cc 137cs x Ganr.ia Sc int. lo-11 uci/cc 131 1 x and Shielded Garrrna Sc int. Beta int. -G . 133 10 uC1/cc Xe x and GM 1'Ube. Ion Chamber 10-l -106 mry'hr x Ion Chamber 10-l -106 mH/hr x Ion Chamber 10-l -10 6 mil/hr x Ion Chamber 10-l -10G mH/hr x [Q\*/l:R CONTHOL FUNCTIONS/INTERLOCKS Diverts Blowdown Treatment ch<:Jrge to Waste Handling System Closes Condensate Valve from Wwste E.V<iporator a11c.i Feed Preheater Closes Condensate Line Valve Containr.1ent Ventil<ition Isolation Containment Ventilation Isolation Containment Ventilation Isolation Closes waste Gas Discharge Valve ' '

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