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

More documents

Recommendations

Info

Updated Final Safety Analysis Report - (STS-004-002)the emergency diesel generator. Sea water suction was provided from either of two sea chestslocated on opposite sides of the ship. Additionally, the main fire system was tied in as a backupsea water supply. Sea water discharge was normally through the bottom of the vessel at thecenterline. However, in case of grounding, an alternate discharge was provided through the portside.9.1.2 Soluble Poison (SP) System9.1.2.1 FunctionAll of the soluble poison (SP) system equipment is deactivated, disabled, drained and performsno active function.The SP system was an alternate means of reactivity control for reactor shutdown. The systemwas capable of overriding sufficient reactivity to permit the operator to bring the reactor to acold, subcritical condition with all control rods withdrawn from the core. The system wouldhold down approximately 11% excess reactivity (a boric acid concentration of approximately4½ gm/liter).9.1.2.2 DescriptionThe SP system consists of a 28 cubic foot mixing tank (SP-T1) containing two immersionheaters (SP-H1 and SP-H2), an agitator (SP-F1), valves and piping. The mixing tank is locatedin the engine room at the navigation bridge level.For ease of handling, prepackaged boric acid crystals (400 pounds) were added to hot water inthe mixing tank and agitated to form a uniform solution. The solution temperature wasmaintained at 200°F by immersion heaters, which were controlled by the thermostat (TC/SP-2).The solution was pumped from the mixing tank into the DK system with the emergency makeuppump (DK-P3). The boric acid was circulated into the primary system by the emergencycanned pump (DK-P2), which, with or without assistance from the primary coolant pumpswould have dispersed the boric acid solution uniformly throughout the primary system water.9.2 Reactor Auxiliary Systems9.2.1 Primary Loop Purification (PP) System9.2.1.1 FunctionAll of the primary loop purification (PP) system equipment is deactivated, disabled, drained andperforms no active function. The demineralizers and their resins were removed in March 1976.The principal function of the PP system was to assure that the impurity concentrations in theprimary coolant were below specified levels. These impurities can consist of dissolved andundissolved corrosion products and residual impurities in the makeup water. Gases (argon,xenon, krypton and helium) were not removed by the PP system.Secondary functions of the PP system include the following:Supply makeup water to the buffer seal system;Remove decay heat during reactor shutdown; and,Decontaminate the primary coolant if a fuel rod should fail.Rev. VI 96
9.2.1.2 DescriptionUpdated Final Safety Analysis Report - (STS-004-002)The PP system consisted of four letdown coolers - three demineralizers; two filters; andassociated instrumentation, controls, valves and piping.The four letdown coolers (PP-C1, PP-C2, PP-C3 and PP-C4) are identical shell and tube heatexchangers arranged in two parallel loops, each loop containing two letdown coolers in series.Cooling water for the letdown coolers was supplied by the intermediate cooling water system.Isolation valves (PP-1V, PP-2V, PP-3V and PP-4V) are located upstream and downstream ofeach pair of coolers and were operated by pushbuttons from the main control room. The valvearrangement permitted operation with either pair of coolers.The carbon steel shell of each cooler is about 30 inches in diameter and about 21 inches long.The tube side, in which primary water circulates, was designed for 2000 psig and 650°F. Theshell of each cooler was designed for 150 psig and 225°F. The coolers are located inside thecontainment vessel.During normal reactor operation, primary water at approximately 521°F and 1750 psia wasdrawn from the reactor outlet line of the port primary coolant loop. This water flowed throughthe letdown coolers and the normal flow control valves (PP-7V or PP-8V) to reduce thetemperature and pressure to about 110°F and 50 psig.The flow control network, located downstream of the letdown coolers and inside thecontainment vessel, consists of the two normal flow control valves PP-7V and PP-8V) and abypass control valve (PP-6V). Valves PP-7V and PP-8V are diaphragm operated angle valvesand were used to control the system flow when the primary system pressure was above 500psig. At primary system pressure less than 500 psig, the bypass control valve (PP-6V), adiaphragm operated, straight-through valve, provided flow.Downstream of the flow control valves, the PP system piping penetrates the containment vesselbulkhead and enters the lower reactor compartment. A diaphragm operated valve (PP-57V) waslocated in this line immediately outside the containment vessel. This valve was operated by thecontainment isolation system. A flow measurement nozzle is located in the line downstream ofvalve PP-57V. A pressure detector (PIA/PP-6) and two temperature detectors (TICA/PP-4) arelocated in the same general area as the flow nozzle.The mixed-bed demineralizers (PP-E1, PP-E2 and PP-E3) were in the forward area of the lowerreactor compartment. They were removed in March 1976. Each unit was capable of handling aflow up to 30 gpm; therefore, with a normal system flow of 20 gpm, only one demineralizer wasin operation. Flows above 30 gpm required two units. The demineralizers were uprightcylindrical tanks, 30-inch ID and 5-foot high, with hemispherical heads. Each demineralizerwas surrounded with 4½ inches of lead shielding. Venting and draining operations associatedwith demineralizer units were made with a vent line connected to the gas manifold in thegaseous waste disposal (WL) system and with a drain line connected to the equipment drain andwaste collection (PD) system. Remotely operated isolation valves (PP-11V, PP-12V, PP-13V,PP-26V, PP-27V and PP-28V) are located on the upstream and downstream sides of eachdemineralizer. These valves were operated by pushbuttons from the main control room.The effluent filters (PP-E4 and PP-E5) are located at the outlet of the demineralizers in theforward port area of the lower reactor compartment. These units are identical in design andwere capable of removing resin fines and insoluble impurities from the demineralizer effluent.Each unit was capable of handling flows up to 30 gpm; therefore, at the normal flow of 20 gpm,only one unit was used. Each filter is about 12 inches in diameter and 32 inches long and isRev. VI 97
Page 1 and 2:
0U.S. Department Savannah Technical
Page 3 and 4:
Docket No. 50-238; License NS-1; N.
Page 5:
Ttit 1 ►'1 ltt tU.S. Department o
Page 8:
PageNo.Rev.No.Updated Final Safety
Page 11 and 12:
Updated Final Safety Analysis Repor
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Page 23 and 24:
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Page 31 and 32:
Page 33 and 34:
U p da te d Fi na lS af et yA n al
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
Page 43 and 44:
Figure 2-2General Arrangement - Inb
Page 45 and 46:
Page 47 and 48:
3.2.3 Port Operating CriteriaUpdate
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
U p da te d Fi na lS af et yA n al
Page 61 and 62:
Table 4-1List of Containment Penetr
Page 63 and 64: Table 4-1List of Containment Penetr
Page 71 and 72: Updated Final Safety Analysis Repor
Page 73 and 74: 5.3.3 Local ShieldingUpdated Final
Page 79 and 80: 7.1.2 General Performance DataUpdat
Page 81 and 82: 7.1.2.3 Water ChemistryUpdated Fina
Page 87 and 88: 7.5 Primary PumpsUpdated Final Safe
Page 91 and 92: 8.1.3 Construction Features8.1.3.1
Page 99 and 100: Figure 8-2Current Electrical Distri
Page 113: Updated Final Safety Analysis Repor
Page 117 and 118: 9.2.2 Buffer Seal (SL) System9.2.2.
Page 123 and 124: 9.2.5.2 DescriptionUpdated Final Sa
Page 125 and 126: 9.2.6.2 DescriptionUpdated Final Sa
Page 131 and 132: 9.2.8 Shutdown Circulation (SC) Sys
Page 141 and 142: 10.3.3 Non-nuclear InstrumentationU
Page 145 and 146: 11.5 Quality Assurance PlanUpdated
Page 155 and 156: Deck/compartmentsUpdated Final Safe
Page 165 and 166:
Page 167 and 168:
Page 169 and 170:
show all

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

Create successful ePaper yourself

Delete template?

Save as template?