10 CFR 50.71(e) - Maritime Administration - U.S. Department of ...

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Updated Final Safety Analysis Report - (STS-004-002)located near the PP system connection and was actuated by pushbuttons on the sampling roominstrument panel. The loop contains a conductivity cell (CIRA/SA-7), which monitored thewater quality of the demineralizer effluent. The water could flow through the sampling bombline inside the hood or through the bypass line. Flow through the loop was controlled by amanual control valve (SA-15V) located outside the hood. Rotameter (SA-3 and SA-5),downstream of the sampling bomb and bypass line, were used to adjust the loop flow. Thenormal flow was about 1 gpm. The water was returned to the buffer seal surge tank. Adiaphragm operated valve (SA-32V), actuated with the same pushbuttons as used for valve SAl9V,is located near the connection to the surge tank.Samples for dissolved hydrogen and total gas analysis were taken upstream of the sample bomb.A water faucet is also located upstream of the sample bomb so that bottle samples could betaken. Locally indicating bourdon tube type pressure gages (PI/SA-10 and PI/SA-12) arelocated on each side of the sampling bomb. A pressure indicator (PI/SL-7) for the buffer sealsurge tank (SL-T1) is also located inside the hood so that the tank pressure could be monitoredwhile samples were taken.The second sample loop was arranged so that it could be used to sample the lab waste tank (PD-T1) and the inner bottom tanks (PD-P5 and PD-T6) in the PD system. To perform this function,a supply line is connected between the discharge header for the waste transfer pump (PD-P1)and the upstream side of the sampling bomb. A return line is located between the downstreamof the bomb and the suction header for pump PD-P1. Diaphragm operated isolation valves arelocated on the supply line (SA-24V) and in the return line (SA-29V). Both valves wereactuated with the same set of pushbuttons on the sampling room instrument panel. Thepushbuttons for valves SA-19V and SA-32V (PP system) and the pushbuttons for valves SA-24V and SA-29V have an electrical interlock arrangement so that one set of valves could not beopened when the other set of valves were open. This minimized the possibility ofcontaminating PP system primary water with water from the waste storage tanks.The manual valving for the lab waste tank and the inner bottom tanks is arranged so that theinlet and outlet lines could have been connected to pump PD-P1 to circulate a representativesample through the sample bomb for subsequent analyses. The valves have reach rods whichwere operated in the sampling room.Makeup storage tanks (PD-T2 and PD-T3) could be sampled with the same arrangementprovided for tanks PD-T1, PD-T5 and PD-T6; however, a direct line runs from the primarymakeup pump (PD-P2) discharge line to a water faucet in the sampling hood. This line wasused to sample the primary system expansion water that was stored in PD-T2 and PD-T3.9.2.6 Intermediate Cooling Water (CW) System9.2.6.1 FunctionAll of the intermediate cooling water (CW) system equipment is deactivated, disabled, drainedand performs no active function.The CW system cooled various components in the reactor plant while maintaining anintermediate barrier between primary water and sea water. This minimized the possibility ofreleasing radioactive fluid directly to the sea and minimized the possibility of water containingchlorides contacting equipment constructed of stainless steel.Rev. VI 106
9.2.6.2 DescriptionUpdated Final Safety Analysis Report - (STS-004-002)The CW system has two separate flow circuits, one for sea water and one for fresh water. Thesea water circuit is composed of two pumps (CW-P1 and CW-P2), two main intermediatecoolers (CW-C1 and CW-C2), a suction sea chest, an overboard discharge, manual valves andpiping. The two pumps are arranged in parallel with one as standby. The coolers are connectedin parallel so that either pump can deliver sea water to either cooler. The sea water pumps tooksuction from the sea chest and pumped the sea water to the tube side of the intermediate coolers.Heat was removed from the fresh water circulating through the shell side. The heated sea waterwas then discharged through the overboard discharge. The intake for the pumps is alsoconnected to the suction sea chest for the salt water service system. This sea chest can be usedif the normal sea chest was clogged or out of service. An auxiliary overboard discharge is alsoprovided. Additionally, the salt water circuit normally supplies cooling water for reactorcompartment ventilation system cooling coils (RS-C1 and RS-C2). The line is connected to thedischarge of the sea water pumps.The sea water pumps, located at the forward end of the engine room on the lower level, arevertically mounted centrifugal pumps of bronze construction. They had a design rating of 1491gpm with a suction head of 4 to 9 psig and a total developed head of 20 psi. The motor wasrated at 25 horsepower.The fresh water circuit is a closed loop consisting of two circulating pumps (CW-P3 and CW-P4), two main intermediate coolers (CW-C1 and CW-C2), a surge tank (CW-T1), manualvalves, a strainer (CW-F26), control valves, relief valves, instrumentation and piping. Thepumps circulated fresh water through the shell side of the intermediate coolers to a supplyheader. Fresh water flowed and cooled the following: Components inside the Containment Vessel; Purification letdown coolers (PP-C1, PP-C2, PP-C3 and PP-C4); Primary (neutron) shield tank cooling coils (CW-F12 and CW-F13); Primary relief valve leak off condensers (PR-C1 and PR-C2); Containment air cooling coils (CC-C1 and CC-C2); Primary pumps (PS-P1, PS-P2, PS-P3 and PS-P4); Components outside the Containment Vessel; Buffer seal coolers (SL-C1 and SL-C2); Control rod drive hydraulic power supply coolers 1 and 2; Instrument air compressors (NI-P1 and NI-P2) and associated after coolers; Quantichem analyzer coolers; and, Feedwater sample cooler.The water from these components collected in a return header and then completed the cycle byflowing through a common line to the suction of the fresh water circulating pumps. The freshwater pumps (CW-P3 and CW-P4) are arranged in parallel with one acting as a standby. Theyare vertically mounted centrifugal pumps made of bronze. The design flow rate for each pumpwas 675 gpm with a suction head of 15 psig and with a total developed head of 65 psi. Thefresh water pumps are located at the forward end of the engine room on the lower level.Downstream of the fresh water pumps, the intermediate coolers (CW-C1 and CW-C2) arearranged in parallel so that either pump could be used with either cooler. The coolers weresingle-pass, straight, shell-and-tube heat exchangers with salt water flowing through the tubesand fresh water flowing through the shell side. The tubes, associated tube sheet liners and inletRev. VI 107
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10 CFR 50.71(e) - Maritime Administration - U.S. Department of ...

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