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

More documents

Recommendations

Info

Updated Final Safety Analysis Report - (STS-004-002)Feedwater was added to the steam drum through a feedwater distribution header located in the centerof the steam drum. The feedwater was directed downward into the drum, joins the water from thesteam separators and flows to the downcomers.Individual surface blowdown and chemical feed connections are provided in the steam drumsections.8.1.2 Design ConditionsThe design conditions of the steam generators are summarized in Table 8-1. The steam generatorswere designed, built, inspected and stamped in accordance with regulations of the United StatesCoast Guard (USCG) and American Bureau of Shipping (ABS). Where particular regulations didnot exist, the ASME code was applied and the matter was forwarded to the AEC and USCG forapproval.Table 8-1 Steam Generator DataDesign heat load, Btu/hr126.3E+6Tube side conditionsFluidPrimary coolant waterFlow, lb/hr4.6E+6Inlet temperature, °F 521.3Outlet temperature, °F 494.7Volume, cu ft 87Pressure drop, psig 17.5Design pressure, psig 2000Design temperature, °F 650Hydrostatic test pressure, psig 3000Shell side conditionsFeedwater temperature, °F 345Steam pressure, psig 455Steam temperatureSaturatedWater volume to fill shell, cu ft 355Water volume, operating, cu ft 227Design pressure, psig 800Design temperature, °F 650Hydrostatic test pressure, psig 1200Rev. VI 72
8.1.3 Construction Features8.1.3.1 Heat ExchangersUpdated Final Safety Analysis Report - (STS-004-002)The horizontal section of the heat exchanger is a single pass U-tube, U-shell arrangement. Thetubes are expanded and welded at both ends to the fixed tube sheets to prevent primary-tosecondarysystem leakage.The heat exchanger pressure shell, steam drum, support members and other components notdirectly in contact with the primary coolant are fabricated of carbon steel. The U-tubes areseamless drawn type-304 stainless steel, ¾ inch OD and 0.072 inch minimum wall thickness.Each heat exchanger has 812 tubes positioned in a 11/16 inch triangular pitch.Eight 6 inch downcomer nozzles are welded to the heat exchanger shell near the bottom.Twelve 8 inch and one 6 inch riser nozzles are welded to the heat exchanger shell along itsupper surface. The riser and downcomer tubes connect the steam side of the heat exchangerwith the steam drum. The downcomer tubes are shaped to provide the necessary flexibilitybetween these pressure vessels.8.1.3.2 Steam Drum and InternalsThe steam drum is horizontal with elliptical heads. A 12 inch by 16 inch manhole at one endprovides the necessary access to the internal parts.Steam separation was provided by 20 cyclone separators located within the steam drum. Thescrubber elements were mounted adjacent to the cyclone section and direct the vapor toward thedry-pipe section. The dry pipe was connected directly to a 7.750 inch ID outlet nozzle locatedin the upper drum section, where the steam flow was directed to the containment penetration.Two spring-loaded relief valves are on each steam drum to protect against overpressure. Theywere set to relieve at 800 psig and have a total relieving capacity of 108,000 lb/hr at the liftpressure. The valve effluent discharged directly to the containment vessel.Remote indication of water level was provided by three independent systems in each steamdrum. These consisted of two differential level sensing devices and one electrical conductivityunit provided on an external standpipe. The three assemblies were read out in the main controlroom. An additional ultrasonic detector assembly was installed experimentally on one steamdrum for evaluation.8.2 Main and Auxiliary Steam SystemsThe main and auxiliary steam systems were comparable in arrangement to those found aboardconventional ships of the same size and horsepower. The principal difference was in the utilization ofsaturated steam for both main propulsion and the auxiliary services. As a result of this arrangement, itwas necessary to employ steam separators at several points to maintain acceptable main steam qualityconditions. The steam quality limit was 0.25% and verified through an extensive series of tests performedprior to ship delivery in 1962.8.2.1 Main Steam SystemAll of the main steam system equipment is deactivated, drained, disabled and performs no activefunction.The main steam system pressure varied inversely as the reactor power demand and control was basedon constant reactor average temperature. This pressure varied as a function of power demand andprimary system average temperature.Rev. VI 73
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: Updated Final Safety Analysis Repor
Page 43 and 44: Figure 2-2General Arrangement - Inb
Page 47 and 48: 3.2.3 Port Operating CriteriaUpdate
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 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 89: Updated Final Safety Analysis Repor
Page 99 and 100: Figure 8-2Current Electrical Distri
Page 115 and 116: 9.2.1.2 DescriptionUpdated Final Sa
Page 117 and 118: 9.2.2 Buffer Seal (SL) System9.2.2.
Page 131 and 132: 9.2.8 Shutdown Circulation (SC) Sys
Page 141 and 142:
10.3.3 Non-nuclear InstrumentationU
Page 143 and 144:
Page 145 and 146:
11.5 Quality Assurance PlanUpdated
Page 147 and 148:
Page 149 and 150:
Page 151 and 152:
Page 153 and 154:
Page 155 and 156:
Deck/compartmentsUpdated Final Safe
Page 157 and 158:
Page 159 and 160:
Page 161 and 162:
Page 163 and 164:
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 ...

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?