Technology and Operation - Kernkraftwerk Gösgen

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Periodicals 60 Regular publications � Annual Report of Kernkraftwerk Gösgen-Däniken AG (www.kkg.ch) � Bulletin of the Swiss Nuclear Forum, Bern (www.nuklearforum.ch, covers general nuclear power related topics in short summaries and operating figures for Switzerland’s nuclear power plants, published monthly) � Nagra Annual Report, National Cooperative for the Disposal of Radioactive Waste (Nagra), Wettingen (www.nagra.ch) � Supervision Report, Radiation Protection Report, Swiss Federal Nuclear Safety Inspectorate (ENSI), Brugg (www.ensi.ch, reports compiled by the public authorities on the operation of Swiss nuclear power plants, the confederation’s supervisory activities and radiation protection) � Environmental radioactivity and radiation doses in Switzerland, Federal Office of Public Health (FOPH), Department of Radiation Protection, Bern (www.bag.admin.ch, compilation of the results of radioactivity monitoring, published annually) � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �
Key technical data Power Gross electrical output 1035 MW Net electrical output 985 MW Thermal reactor output 3002 MW Reactor building Outside diameter 63.6 m Height above base plate 56.8 m Wall thickness in the cylindrical part 1.6 m Wall thickness in the dome 1.2 m Thickness of base plate 2.8 m Steel containment structure Inside diameter 52 m Wall thickness 32 mm Design overpressure/temperature 4.89 bar/135°C Reactor pressure vessel Inside diameter 4360 mm Wall thickness of cylindrical shell (without cladding) 221 mm Material 22NiMoCr3-7 Cladding thickness 6 mm Total height including closure head 10,827 mm Design pressure/temperature 175 bar/350°C Weight without internal structures 360 t Weight of core internal structures 135 t Reactor Coolant and moderator H2O Fuel uranium (UO2) and Mox (UO2 and PuO2) Number of fuel assemblies 177 Overall weight per assembly 666 kg Fuel rods per fuel assembly 205 (Mox: 204) Arrangement square lattice configuration Overall length of fuel rods 3860 mm Active fuel length of a rod 3550 mm Outer diameter of fuel rods 10.75 mm Cladding tube material Zry-4/DX ELS 0.8 Cladding tube wall thickness 0.725 mm Total uranium weight in core 76 t Enrichment reload fuel assemblies 4.6–4.95 % U-235 equivalent Average burnup at discharge 55–65 MWd/kg HM Average heat flux density 67.5 W/cm 2 Average linear power 228 W/cm Number of control assemblies 48 Absorber rods per control assembly 20 Absorber material AgInCd � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � �
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Technology and Operation Gösgen nu
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6 31 7 29 27 26 10 Headwater channe
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This brochure provides an overview
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Contribution to Switzerland’s ele
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% 100 90 80 70 60 50 40 30 20 10 0
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The first self-sustained chain reac
Page 13 and 14: access for heavy goods vehicles. A
Page 15 and 16: pool then increases the storage cap
Page 17 and 18: is equally distributed over the thr
Page 19 and 20: Reactor coolant pump Reactor coolan
Page 21 and 22: Coolant treatment systems The volum
Page 23 and 24: leakage rate, and must also take ch
Page 25 and 26: Treatment of liquid radioactive was
Page 27 and 28: Safety barriers Nuclear fuel matrix
Page 29 and 30: The single-failure criterion applie
Page 31 and 32: Containment venting system 1 Contai
Page 33 and 34: An extensive retrofit of the pressu
Page 35 and 36: turbine from being damaged by erosi
Page 37 and 38: The feedwater pumps pump the feedwa
Page 39 and 40: ing, where it is divided over the n
Page 41 and 42: gency and residual heat removal sys
Page 43 and 44: ods to such an extent that the bala
Page 45 and 46: sound are performed in different in
Page 47 and 48: The familiar effects of ageing incl
Page 49 and 50: Aerosol collector. tower has also t
Page 51 and 52: The radiation dose received by the
Page 53 and 54: From the 1970s up to the 1990s, the
Page 55 and 56: Reprocessing plant La Hague Fuel el
Page 57 and 58: 1985 � The Federal Council approv
Page 59 and 60: terim Storage Facility for Radioact
Page 61 and 62: Characteristics HP = High-pressure
Page 63: Internet addresses � Swiss Federa
Page 67 and 68: 53 56 55 50 51 Component drain syst
Page 69 and 70: Speed 3000 rev/min Turbine gross ef
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Technology and Operation - Kernkraftwerk Gösgen

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