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Operating results 2019 441

In 2019 the seven (7) German plants generated 75.10 The Taishan-1 in China (capacity: 1,750 MWe billion kilowatt hours (kWh) of gross. At the end of 2019 gross, 1,660 MWe net, reactor type: EPR, the most powerful nuclear the Philippsburg 2 nuclear power plant ceased commercial operation power plant worldwide and the most powerful single power plant due to the revision of the German Atomic Energy Act in the political worldwide) achieved the world record in electricity production in aftermath of the accidents in Fukushima, Japan, in 2011. Seven 2019 with appr. 13 billion kilowatt hours. ­nuclear power plants with an electric gross output of 10,013 MWe Worldwide, 41 nuclear power plant units achieved production were in operation during the year 2019. ­results of more than 10 billion kilowatt hours net in the year 2019. REPORT All seven nuclear power plants in operation in 2019 achieved Additionally German nuclear power plants are leading with their ­results with a gross production greater than 10 billion kilowatt hours, lifetime electricity production. The Brokdorf, Emsland, Grohnde, one power plant, The Isar 2 unit even produced more than 12 billion ­Isar 2 and Philipsburg 2 nuclear power plant have produced more kilowatt hours. than 350 billion kilowatt hours since their first criticality. Additionally the Isar 2 unit achieved one of the world’s ten best production results in 2019 (“Top Ten”, sixth place). At the end of 2019, 449 reactor units were in operation in 31 countries worldwide and 54 were under construction in 16 countries. The share of nuclear power in world electricity production was around 11 %. German ­nuclear power plants have been occupying top spots in electricity production for decades thus providing an impressive demonstration of their efficiency, availability and reliability.

Operating results of nuclear power plants in Germany 2018 and 2019

Nuclear power plant Rated power Gross electricity Availability Energy availability generation factor* factor** in MWh in % in %

gross net 2018 2019 2018 2019 2018 2019 in MWe in MWe

Brokdorf KBR 1,480 1,410 10,375,751 10,153,213 90.60 87.69 84.72 82.34

Emsland KKE 1,406 1,335 11,495,686 10,781,232 94.78 89.20 94.67 89.12

Grohnde KWG 1,430 1,360 10,946,635 10,700,632 92.82 90.10 91.61 89.80

Gundremmingen KRB C 1,344 1,288 10,361,862 10,381,798 90.41 89.20 89.85 88.50

Isar KKI 2 1,485 1,410 12,127,490 12,036,656 95.46 95.95 95.24 95.68

Neckarwestheim GKN II 1,400 1,310 9,703,700 10,411,410 81.35 94.03 81.00 88.00

Philippsburg KKP 2 1,468 1,402 10,993,639 10,606,307 90.63 89.63 90.47 89.31

Total 10,013 9,515 76,004,763 75,071,247 90.85 90.82 89.60 88.86

* Availability factor (time availability factor) kt = tN/tV: The time availability factor kt is the quotient of available time of a plant (tV) and the reference period (tN). The time availability factor is a degree for the deployability of a power plant. ** Energy availability factor kW = WV/WN: The energy availability factor kW is the quotient of available energy of a plant (WV ) and the nominal energy (WN). The nominal energy WN is the product of nominal capacity and reference period. This variable is used as a reference variable (100 % value) for availability considerations. The available energy WV is the energy which can be generated in the reference period due to the technical and operational condition of the plant. Energy availability factors in excess of 100 % are thus impossible, as opposed to energy utilisation.

*** Inclusive of round up/down, rated power in 2019.

**** The Gundremmingen nuclear power plant (KRB B) was permanently shutdown on 31 December 2017 due to the revision of the German Atomic Energy Act in 2011.

All data in this report as of 31 March 2020

Report Operating results 2019 atw Vol. 65 (2020) | Issue 8/9 ı August/September

Brokdorf 442

Operating sequence in 2019

Electrical output in %

100 REPORT 90 80 70 60 50 40 30 20 10

January February March April May June July August September October November December

100 In 2019, the Brokdorf nuclear power plant (KBR) was connected to p Exchange CS32 (emergency power supply), the grid for a total of 7,682 operating hours with an availability factor replacement Exchange CS41 (normal power supply). 80 of 82.3 %. The gross generation for the year under review was p Building ZB.9 Fire protection upgrading overflow flaps. 10,153,212 MWh. In 2019, the thermal reactor output was again 60 ­limited to a maximum of 95 % with a coolant temperature reduced The grid synchronisation took place on 9 July 2019 at 08:17 h after by 3 K due to the specifications of ME 02/2017 “Increased oxide layer 31.1 days. 40 thickness on rod cladding tubes of fuel elements”. Compared to planning, the start-up date was delayed by 4.6 days. On 13 April 2019, the plant was disconnected from the grid by The inspection extension is mainly due to the additional inspections 20 triggering “Manual-TUSA” due to increasing vibrations at the turbine-­ of the heating tube plugs on steam generators 30 and 40. generator set. After completion of the inspection work, the unit was 0 reconnected to the grid on 22 April 2019. Unplanned shutdowns and reactor/turbine trip In the period from 17 to 22 November 2019, the plant was shut On 13 April 2019, the turbine was disconnected from the grid by down to the “subcritical cold” state due to several findings on the ­triggering “manual turbine trip” due to increasing vibrations at the 100­baffle in the cooling water return structure. turbine-generator set. After completion of the inspection work, the unit was reconnected with the grid on 22 April 2019. 80 Planned shutdowns In the period from 17 to 22 November 2019, the plant was shut On 7 June 2019, the plant was shut down for the 31st refuelling and down to “subcritical cold” state due to several findings on the baffle 60 annual inspection. in the cooling water return structure. The inspection and maintenance included the following priorities: 40 p Reactor Full core discharge Power reductions above 10 % and longer than for 24 h

20 Replacement of 60 fresh fuel elements Load reductions for the implementation of the grid-supporting Inspection of fuel elements, ­power control as well as redispatch on demand of the control centre

0 control elements, throttle bodies. were carried out. p Containment Leak rate test. p Main coolant Ring exchange electric motor WANO Review/Technical Support Mission pump YD30 Inspection of axial bearings The WANO Peer Review 2019 was conducted in the period 15 to Replacing the mechanical seal 26 July 2019 in the form of an “Optimized Peer Review”, i.e. Positionierung:(axial bearing). ­shortened to 2 weeks. In the run-up to the WANO Peer Review 2019, p MainBezug, coolant links,Inspection unten of the axial bearing. a Crew Performance Observation (CPO) was successfully completed pump YD40 for the first time by the KBR shift team on the simulator of a German p SteamX = generator 20,475 WS Y test = 95,25Steam generator B = 10/20, 173,5 H = nuclear38,2 power plant with pressurised water reactor in the period VGB: HKS6Kadditionally 30 % 30/40. from 6 to 9 May 2019. p Mainatw: steam 100 safety 60 Internal 0 0 inspections. In summary, WANO confirmed a very good result for KBR. and relief valves station p Cooling water Work in the pump antechambers of the Delivery of fuel elements secondary cooling water systems During the reporting year 28 fuel elements were ­delivered and VE10/20 and 30/40 stored. Work in the main cooling water channels VA40-60. Waste management status p Turbine/ Control Inspection / Generator By the end of the year 2019, 33 loaded CASTOR© cask were located Generator ND II + III, run-out measurements, at the Brokdorf on-site intermediate storage. Displacement measurements Inspection bearing SB14.

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Operating data

Review period 2019 REPORT

Plant operator: PreussenElektra GmbH Availability factor in % Shareholder/Owner: PreussenElektra GmbH (80 %), in % Vattenfall Europe Nuclear Energy GmbH (20 %) 100 Plant name: Kernkraftwerk Brokdorf (KBR) Address: PreussenElektra GmbH, Kernkraftwerk Brokdorf, 90 92 93 93 93 25576 Brokdorf, Germany 90 Phone: +49 4829 752560 84 Web: www.preussenelektra.de 80 78 70

First synchronisation: 10-14-1986 60 Date of commercial operation: 12-22-1986 Design electrical rating (gross): 1,480 MW 50 Design electrical rating (net): 1,410 MW Reactor type: PWR 44 40 Supplier: Siemens/KWU

The following operating results were achieved: 30 Operating period, reactor: 7,682 h Gross electrical energy generated in 2019: 10,153,212 MWh 20 Net electrical energy generated in 2019: 9,635,834 MWh Gross electrical energy generated since 10 first synchronisation until 12-31-2019: 360,721,021 MWh Net electrical energy generated since 0 84 93 93 93 93 52 91 88 first synchronisation until 12-31-2019: 342,884,965 MWh 2012 2013 2014 2015 2016 2017 2018 2019 Availability factor in 2019: 87.69 % Availability factor since date of commercial operation: 89.78 % Collective radiation dose of own and outside personnel in Sv Capacity factor 2019: 82.34 % Capacity factor since 10 date of commercial operation: 85.94 % Downtime 9 (schedule and forced) in 2019: 12.31 % Number of reactor scrams 2019: 0 8

Licensed annual emission limits in 2019: 7 Emission of noble gases with plant exhaust air: 1.0 · 1015 Bq Emission of iodine-131 with plant exhaust air: 6.0 · 109 Bq 6 Emission of nuclear fission and activation products with plant waste water (excluding tritium): 5.55 · 1010 Bq 5 Proportion of licensed annual emission limits for radioactive materials in 2019 for: 4 Emission of noble gases with plant exhaust air: 0.075 % Emission of iodine-131 with plant exhaust air: 0.087 % 3 Emission of nuclear fission and activation products with plant waste water (excluding tritium): 0.0005 % 2 Collective dose: 0.158 Sv 1

0.13 0.22 0.17 0.14 0.14 0.13 0.14 0.16 0 2012 2013 2014 2015 2016 2017 2018 2019

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Emsland 444

Operating sequence in 2019

Electrical output in %

100 REPORT 90 80 70 60 50 40 30 20 10

0 January February March April May June July August September October November December

Apart from the 39.4 days refuelling outage the Emsland nuclear Unplanned shutdowns and reactor/turbine trip ­power plant (KKE) had been operating uninterrupted and mainly at None. full load during the review period 2019. Producing a gross power generation of 10,781,232 MWh with a capacity factor of 89.12 % the Power reductions above 10 % and longer than for 24 h power plant achieved a very good operating result. 16 April to 17 May: 17st Stretch-out operation.

Planned shutdowns Peer Reviews 32rd refuelling and 31rd overall maintenance outage. From 9 September 2019 to 20 September 2019 a WANO team of 10 experienced nuclear professionals from 7 different countries, The annual outage was scheduled for the period 17 May to 26 June. ­conducted an optimized Peer Review (PR) at KKE NPP. The outage took 39.4 days from breaker to breaker including an In summary, the WANO exit report concludes that KKE completed ­outage prolongation (18 days) due to replacement of the generator. the 2019 Peer Review with a very good result. In addition to the replacement of 40 fuel elements the following 100­major maintenance and inspection activities were carried out: Delivery of fuel elements 28 Uranium-fuel elements were delivered. 80 p Inspection of core and reactor pressure vessel internals. p Inspection of a reactor coolant pump. Waste management status 60 p Inspection of pressurizer valves. No CASTOR© cask loading was carried out during the review period p Eddy current test on steam generator tubes. 2019. 40 p Containment leak rate test. At the end of the year 47 loaded casks were stored in the local p 20 Pressure test on different coolers and tanks. ­interim storage facility. p Inspection on main condensate pump. p 0 Maintenance works on different transformers. p Different automatic non-destructive examinations.

Positionierung: Bezug, links, unten X = 20,475 Y = 95,25 B = 173,5 H = 38,2 VGB: HKS6K 30 % atw: 100 60 0 0

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Operating data

Review period 2019 REPORT

Plant operator: Kernkraftwerke Lippe-Ems GmbH Availability factor in % Shareholder/Owner: RWE Power AG (87,5 %), Capacity factor in % PreussenElektra GmbH (12,5 %) 100 Plant name: Kernkraftwerk Emsland (KKE) Address: Kernkraftwerk Emsland, 95 95 95 94 93 95 90 91 Am Hilgenberg, 49811 Lingen, Germany 89 Phone: +49 591 806-1612 Web: www.rwe.com 80

70

First synchronisation: 04-19-1988 60 Date of commercial operation: 06-20-1988 Design electrical rating (gross): 1,406 MW 50 Design electrical rating (net): 1,335 MW Reactor type: PWR 40 Supplier: Siemens/KWU

The following operating results were achieved: 30 Operating period, reactor: 7,821 h Gross electrical energy generated in 2019: 10,781,232 MWh 20 Net electrical energy generated in 2019: 10,237,093 MWh Gross electrical energy generated since 10 first synchronisation until 12-31-2019: 357,600,201 MWh Net electrical energy generated since 0 95 95 95 91 94 93 95 89 first synchronisation until 12-31-2019: 339,066,997 MWh 2012 2013 2014 2015 2016 2017 2018 2019 Availability factor in 2019: 89.20 % Availability factor since date of commercial operation: 93.91 % Collective radiation dose of own and outside personnel in Sv Capacity factor 2019: 89.12 % Capacity factor since 10 date of commercial operation: 93.77 % Downtime 9 (schedule and forced) in 2019: 10.80 % Number of reactor scrams 2019: 0 8

Licensed annual emission limits in 2019: 7 Emission of noble gases with plant exhaust air: 1.0 · 1015 Bq Emission of iodine-131 with plant exhaust air: 5.0 · 109 Bq 6 (incl. H-3 and C-14) Emission of nuclear fission and activation products with plant waste water (excluding tritium): 3.7 · 1010 Bq 5

Proportion of licensed annual emission limits 4 for radioactive materials in 2019 for: Emission of noble gases with plant exhaust air: 0.016 % 3 Emission of iodine-131 with plant exhaust air: 0.0 % (incl. H-3 and C-14) 2 Emission of nuclear fission and activation products with plant waste water (excluding tritium): 0.00 % 1 Collective dose: 0.067 Sv 0.09 0.08 0.06 0.10 0.05 0.09 0.06 0.07 0 2012 2013 2014 2015 2016 2017 2018 2019

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Grohnde 446

Operating sequence in 2019

Electrical output in %

100 REPORT 90 80 70 60 50 40 30 20 10

January February March April May June July August September October November December

100During the 2019 reporting year, the Grohnde nuclear power plant After completion of the work on bracing the RPV head and closing was scheduled for a 36-day overhaul with refueling from grif and the primary circuit (RKL hydraulically sealed), a limited availability 80achieved a time availability of 90.1 %. Gross generation amounted to of a core instrumentation lance (internal neutron measuring system 10,700,632 MWh. for the determination and monitoring of the power distribution 60 Compared to the planned 26 days, the inspection was extended ­density) and 3 Fuel element exit temperature measurements, caused by 250 hours. Delays in the inspection of the drive rods, the by a defective plug connection, were determined. The defective core 40­replacement of the LVD lance G10, a conspicuous closing behaviour instrumentation lance was replaced. of the DH spray valve YP10 S233 and contamination of the turbine oil 20were the main reasons for the revision delay. Unplanned shutdowns and reactor/turbine trip Due to a high Weser water temperature, the output was reduced None. 0 to 447 MW on June 26 and then increased again to full capacity. According to the specifications of the load distribution system, Power reductions above 10 % and longer than for 24 h 26 load reductions were made in 2019 over a total of 228 hours and In the months January, February, April, October and December load 100156 mains and 70 primary controls for a total of 4,307 hours. following operation due to requirements of the load distributor.

80 Planned shutdowns Delivery of fuel elements 21 April to 27 May: 36th refuelling and plant inspection with In March 2019 the delivery of 44 U-/U-Gd fuel elements of the 60 ­maintenance. ­company Westinghouse took place. As planned, the Grohnde nuclear power plant was shut down on 40 April 21 for revision and the 36th refuelling. The main planned work Waste management status © of20 the inspection and maintenance were: No CASTOR V/19 containers were loaded in 2019. p Unloading and loading with the insertion The interim storage facility with 34 stored CASTOR© V/19 casks

0 of 52 fresh fuel elements. was handed over to Bundesgesellschaft für Zwischenlagerung mbH p Full inspection on 19 fuel elements. (BGZ). p Eddy current testing on 32 control rods. p Visual inspection on 15 throttle bodies. General points/management systems p YD10 D001 Overhaul axial bearing. In September 2019, the surveillance audit of the quality ­management p YD30Positionierung: D001 Motor conversion. system (ISO 9001) and the recertification of the environmental p YD20Bezug, D001 Replacing links, untenthe mechanical seal. ­management system (ISO 14001) and the occupational health p YD40 D001 Replacing the mechanical seal &WS test and safety management system (OHSAS 18001) were successfully of Xthe = pump 20,475 shaft. Y = 95,25 B = 173,5 H = ­completed.38,2 p Start-upVGB: test HKS6K of the BE 30 centring % pins of the UKG and the OKG. p VA01atw: + VA02 100 Inspection 60 0 0 and cleaning of cooling water sections. p TF20 B001 Cleaning the nuclear intercooler. p TF20 S013/S014 Replacing the screws on the quick-closing flaps. p TH20 Inspection of secondary shut-offs with pipe freezing. p Work and inspections in the redundancies with the main focus of activities in the main redundancy 2/6 (maintenance work on valves and actuators and tests on tanks, batteries and ­electrotechnical branches).

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Operating data

Review period 2019 REPORT

Plant operator: Gemeinschaftskernkraftwerk Grohnde GmbH & Co. OHG Availability factor in % Shareholder/Owner: PreussenElektra GmbH (83,3 %), Capacity factor in % Stadtwerke Bielefeld (16,7 %) 100 Plant name: Kernkraftwerk Grohnde (KWG) Address: Gemeinschaftskernkraftwerk Grohnde GmbH & Co. OHG, 95 90 92 P.O. bx 12 30, 31857 Emmerthal, Germany 89 89 90 Phone: +49 5155 67-1 84 E-mail: [email protected] 80 82 Web: www.preussenelektra.de 73 70

First synchronisation: 09-05-1984 60 Date of commercial operation: 02-01-1985 Design electrical rating (gross): 1,430 MW 50 Design electrical rating (net): 1,360 MW Reactor type: PWR 40 Supplier: Siemens/KWU

The following operating results were achieved: 30 Operating period, reactor: 7,889 h Gross electrical energy generated in 2019: 10,700,632 MWh 20 Net electrical energy generated in 2019: 10,113,330 MWh Gross electrical energy generated since 10 first synchronisation until 12-31-2019: 388,274,835 MWh Net electrical energy generated since 0 95 90 84 89 75 86 93 90 first synchronisation until 12-31-2019: 367,082,606 MWh 2012 2013 2014 2015 2016 2017 2018 2019 Availability factor in 2019: 90.10 % Availability factor since date of commercial operation: 91.70 % Collective radiation dose of own and outside personnel in Sv Capacity factor 2019: 89.80 % Capacity factor since 10 date of commercial operation: 91.30 % Downtime 9 (schedule and forced) in 2019: 9.90 % Number of reactor scrams 2019: 0 8

Licensed annual emission limits in 2019: 7 Emission of noble gases with plant exhaust air: 9.0 · 1014 Bq Emission of iodine-131 with plant exhaust air: 7.5 · 109 Bq 6 Emission of nuclear fission and activation products with plant waste water (excluding tritium): 5.55 · 1010 Bq 5 Proportion of licensed annual emission limits for radioactive materials in 2019 for: 4 Emission of noble gases with plant exhaust air: 0.019 % Emission of iodine-131 with plant exhaust air: 0.000 % 3 Emission of nuclear fission and activation products with plant waste water (excluding tritium): 0.000 % 2 Collective dose: 0.261 Sv 1 0.54 0.52 0.27 0.31 0.25 0.23 0.12 0.26 0 2012 2013 2014 2015 2016 2017 2018 2019

Report Operating results 2019 atw Vol. 65 (2020) | Issue 8/9 ı August/September

Gundremmingen C 448

Operating sequence in 2019

Electrical output in %

100 REPORT 90 80 70 60 50 40 30 20 10 0 January February March April May June July August September October November December

In the review year 2019, unit C of Gundremmingen (KRB C) nuclear Power reductions above 10 % and longer than for 24 h power plant was operated at full load without any major restrictions 24 to 25 February: Periodic tests. except for one planned outage for refuelling. 4 to 21 April: Stretch-out-operation. From 4 April to 21 April unit C was in stretch out operation. 4 to 5 August: period tests and maintenance work. During the shutdown a total of 152 fuel elements were unloaded and 1 to 4 December: period tests, change of the control rod traversing replaced with 112 fresh and 40 (2 MOX) partially spent fuel ­elements. order , leak detection in turbine condenser and maintenance work. During the outage all safety relevant workings were monitored by the relevant nuclear controlling authority, the Bavarian State Delivery of fuel elements ­Ministry of the Environment and Consumer Protection (StMUV), and In 2019, no fresh fuel elements were delivered. consulted authorized experts. The inspection of the technical ­systems with regard to safety and reliability confirmed the excellent ­condition Waste management status of the plant. In 2019, a total of 9 CASTOR© casks were loaded. Thus, at the end of A gross total of 10,381,798 MWh of electricity was produced. 2019, 69 CASTOR© casks with each 52 spent fuel elements out of 100 units B and C are stored in the local interim storage. Planned shutdowns 80 21 April to 29 May 2019: 33th refuelling outage and 21th overall General points maintenance inspection. In the year 2019, the recertification of the environmental ­ manage- 60 The following major activities were carried out: ment system (ISO 14001) and energy management system (ISO p 40 Refuelling and sipping of all fuel elements inside the core; result: 50001) were successfully carried out. two defective fuel elements. p 20 Visual inspection and non-destructive testing of reactor pressure vessel stud bolts and internals. p 0 Inspection of main isolation valves of main steam and safety and relief valves. p Emptying of redundancies 1 and 3 for preventive measures on valves and tanks. p Inner inspection and pressure tests on high pressure preheater stringsPositionierung: and reactor water clean-up system. p ExtensiveBezug, non-destructive links, unten testing of pipes and tanks. p InspectionX = 20,475 of two emergency Y = 95,25 diesel generators. B = 173,5 H = 38,2 p Precautionary replacement of 10 kV power cables. VGB: HKS6K 30 % Unplannedatw: 100shutdowns 60 0 0 and reactor/turbine trip 29 to 31 May: Manual scram due to safety valve staying in open ­position during a period test, subsequently exchange of one of his pilot valves.

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Operating data

Review period 2019 REPORT

Plant operator: Kernkraftwerk Gundremmingen GmbH Availability factor in % Shareholder/Owner: RWE Power AG (75 %), Capacity factor in % PreussenElektra GmbH (25 %) 100 Plant name: Kernkraftwerk Gundremmingen C (KRB C) Address: Kernkraftwerk Gundremmingen GmbH, 90 91 Dr.-August-Weckesser-Straße 1, 89355 Gundremmingen, Germany 89 90 90 90 89 Phone: +49 8224 78-1 86 86 E-mail: [email protected] 80 Web: www.kkw-gundremmingen.de 70

First synchronisation: 11-02-1984 60 Date of commercial operation: 01-18-1985 Design electrical rating (gross): 1,344 MW 50 Design electrical rating (net): 1,288 MW Reactor type: BWR 40 Supplier: Siemens/KWU, Hochtief 30 The following operating results were achieved: Operating period, reactor: 7,810 h 20 Gross electrical energy generated in 2019: 10,381,798 MWh Net electrical energy generated in 2019: 9,900,234 MWh 10 Gross electrical energy generated since first synchronisation until 12-31-2019: 341,323,552 MWh 0 92 90 90 90 86 88 90 89 Net electrical energy generated since 2012 2013 2014 2015 2016 2017 2018 2019 first synchronisation until 12-31-2019: 325,082,303 MWh Availability factor in 2019: 89.20 % Availability factor since Collective radiation dose of own and outside personnel in Sv date of commercial operation: 89.20 % Capacity factor 2019: 88.50 % 10 Capacity factor since date of commercial operation: 87.60 % 9 Downtime (schedule and forced) in 2019: 10.80 % 8 Number of reactor scrams 2019: 1 7 Licensed annual emission limits in 2019 (values added up for Units B and C, site emission): 6 Emission of noble gases with plant exhaust air: 1.85 · 1015 Bq Emission of iodine-131 with plant exhaust air: 2.20 · 1010 Bq Emission of nuclear fission and activation products 5 with plant waste water (excluding tritium): 1.10 · 1011 Bq 4 Proportion of licensed annual emission limits for radioactive materials in 2019 for (values added up for Units B and C): 3 Emission of noble gases with plant exhaust air: 0.48 % Emission of iodine-131 with plant exhaust air: 0.40 % 2 Emission of nuclear fission and activation products 1.36 1.49 with plant waste water (excluding tritium): 0.16 % 1.14 0.84 0.89 1 0.78 0.79 Collective dose: 0.79 Sv 0.55

0 2012 2013 2014 2015 2016 2017 2018 2019

Report Operating results 2019 atw Vol. 65 (2020) | Issue 8/9 ı August/September

Isar 2 450

Operating sequence in 2019

Electrical output in %

100 REPORT 90 80 70 60 50 40 30 20 10

January February March April May June July August September October November December

With a gross of 12,036,656 MWh and a Delivery of fuel elements ­availability of 95.68 %, unit 2 of Isar (KKI 2) nuclear power plant In the year under review, 40 uranium fuel elements were delivered achieved an excellent operating result in 2019. The unit also made an from Westinghouse. The dry storage facility contains 16 uranium fuel important contribution to grid stability through increased load elements in stock. ­sequence and control operation, which, however, reduced the net electricity supply that can be generated by 384,950,000 MWh, Waste management status ­corresponding to 11.4 full operation days. The highest generator In 2019, no fuel elements were stored in the BELLA on-site interim ­active power was reached on 20.01.2019 and amounted to 1520 MW. storage facility. Of the storage and transport casks stored in the on-site interim Planned shutdowns storage facility, 26 CASTOR© V/19 casks as well as 7 TN24E have to The fuel element replacement with plant inspection and ­maintenance be assigned to KKI 2. took place from 13 July 2019 to 27 July 2019 with a duration of The interim storage facility was taken over by Bundesgesellschaft 14.8 days. During the inspection and maintenance, 48 new fuel für Zwischenlagerung mbH (BGZ) on 1 January 2019. 100­elements were inserted. General points 80 Unplanned shutdowns and reactor/turbine trip Due to increased oil temperatures at the engine of the main coolant None. pump JEB30 AP001, a precautionary bearing oil change was carried 60 out. For this purpose, the plant output was reduced on 10 August Power reductions above 10 % and longer than for 24 h 2019 from 07:00 hrs to the minimum load point of 360 MW with a 40 None. gradient of 30 MW/min.

20 After the scheduled completion of the exchange and start of the Safety Reviews main coolant pump, full load operation was reached again around

200 and 22 Februar: Management evaluation KKI. 6:34 pm. 6 March: Review of operations by the management of PreussenElektra GmbH. An internal emergency exercise was conducted on 18 November2019. 11 to 15 March:­­ ­ ­Re-certification audit by DNV GL The exercise started within the normal working hours. The scenario Business Assurance Zertifizierung & Umwelt- assumed was an earthquake close to the site, which caused the Positionierung:gutachter GmbH according to DIN EN ISO ­failure of the external main electricity supply and the cooling water Bezug, links,9001/14001, unten BS OHSAS 18001 and EMAS. supply of the emergency diesel generators as well as leakages in the 12 March­­ ­ Inspection in accordance with §16 of the Major storage pool cooling water pipe. In addition, the failure of various and 30X April: = 20,475 Accidents Y = 95,25Ordinance (Störfall B = 173,5 Verordnung) H– = communication38,2 systems was assumed in the course of the exercise. VGB: HKS6KFire 30Protection % and Immission Control. The emergency exercise was completed professionally and 3 andatw: 4 July: 100 60 Internal 0 0 audit “Measurement and test ­purposefully by a highly motivated team. ­equipment monitoring” in KKI. 7 August:­­ ­ Management system status meeting. 8, 18 October Management system audit - Part 1 in the KKI. and 13 November: 10 October: 2nd operational review (half-year review) by the management of PreussenElektra GmbH. 29 October:­­ ­ Audit “Fuel element handling and and 4/5 November fuel element disposal“. 4/5 December: Plant inspection “Integrated Management System.

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Operating data

Review period 2019 REPORT

Plant operator: PreussenElektra GmbH Availability factor in % Shareholder/Owner: PreussenElektra GmbH (75 %), Capacity factor in % Stadtwerke München GmbH (25 %) 100 Plant name: Kernkraftwerk Isar 2 (KKI 2) 96 96 Address: PreussenElektra GmbH, Kernkraftwerk Isar, 94 94 95 90 Postfach 11 26, 84049 Essenbach, Germany 90 89 91 Phone: +49 8702 38-2465 Web: www.preussenelektra.de 80

70

First synchronisation: 01-22-1988 60 Date of commercial operation: 04-09-1988 Design electrical rating (gross): 1,485 MW 50 Design electrical rating (net): 1,410 MW Reactor type: PWR 40 Supplier: Siemens/KWU

The following operating results were achieved: 30 Operating period, reactor: 8,405 h Gross electrical energy generated in 2019: 12,036,656 MWh 20 Net electrical energy generated in 2019: 11,375,505 MWh Gross electrical energy generated since 10 first synchronisation until 12-31-2019: 365,762,469 MWh Net electrical energy generated since 0 94 96 95 89 96 92 95 96 first synchronisation until 12-31-2019: 345,352,094 MWh 2012 2013 2014 2015 2016 2017 2018 2019 Availability factor in 2019: 95.95 % Availability factor since date of commercial operation: 93.36 % Collective radiation dose of own and outside personnel in Sv Capacity factor 2019: 95.68 % Capacity factor since 10 date of commercial operation: 92.48 % Downtime 9 (schedule and forced) in 2019: 4.05 % Number of reactor scrams 2019: 0 8

Licensed annual emission limits in 2019: 7 Emission of noble gases with plant exhaust air: 1.1 · 1015 Bq Emission of iodine-131 with plant exhaust air: 1.1 · 1010 Bq 6 Emission of nuclear fission and activation products with plant waste water (excluding tritium): 5.5 · 1010 Bq 5 Proportion of licensed annual emission limits for radioactive materials in 2019 for: 4 Emission of noble gases with plant exhaust air: 0.127 % Emission of iodine-131 with plant exhaust air: < limit of detection 3 Emission of nuclear fission and activation products with plant waste water (excluding tritium): < limit of detection 2 Collective dose: 0.047 Sv 1

0.14 0.08 0.09 0.25 0.06 0.14 0.06 0.05 0 2012 2013 2014 2015 2016 2017 2018 2019

Report Operating results 2019 atw Vol. 65 (2020) | Issue 8/9 ı August/September

Neckarwestheim II 452

Operating sequence in 2019

Electrical output in %

100 REPORT 90 80 70 60 50 40 30 20 10

January February March April May June July August September October November December

In 1002019, the Neckarwestheim II nuclear power plant (GKN II) Integrated management system (IMS) EnKK ­generated a gross output of 10,411,400 MWh. Net electrical The Integrated Management System (IMS) of EnBW Kernkraft ­generation80 was 9,758,339 MWh, of which 9,371,600 MWh were GmbH (EnKK) according to KTA 1402 with the partial systems ­supplied to the public three-phase grid and 1,039,800 MWh to the for nuclear safety (SMS), quality management (QMS/QSÜ), static60 converter system of Deutsche Bahn AG. The plant was ­occupational safety management (AMS) as well as environmental ­connected to the grid for 7,699.8 hours. This results in a time and energy management (UMS, EnMS) was also continuously ­utilization40 of 87.90 %. ­further developed in 2019. The scope and content of the respective process descriptions were gradually adapted to the various internal Since20 the three-phase alternating current machine was requirements and the related approval-relevant specifications. ­commissioned, 340,241,584 MWh gross and 318,174,476 MWh net have0 been generated. The completeness and effectiveness (conformity) of the process-­ oriented IMS, including the quality management measures, were Planned shutdowns confirmed by appropriate internal audits as well as by a several-day 1009 August to 22 September: 36th fuel element replacement and annual­ inspection by the assessor (ESN) and the supervisory authority at the inspection with maintenance. GKN and KKP sites. 80 The inspection and maintenance included the following priorities: p Fuel element replacement with the use of 40 new fuel elements. The modular and demand-oriented structure of the IMS according to 60 p Eddy current tests of the heating tubes of all 4 steam generators. KTA 1402 also enables continuous and efficient adaptation to the p Secondary tube sheet inspection on all 4 steam generators. site-specific requirements in operation/post-operation in subsequent 40 p Major overhaul of a primary-side safety valve on the years. Another important focus will be the gradual integration of

20 pressuriser JEF10. ­dismantling aspects into the IMS in order to exploit synergy effects. p Pressure test of the heat exchangers in the volume control

0 ­system. Waste management status p Leak rate check of the containment. In 2019, 5 CASTOR© V/19 casks were loaded with 69 GKN I and 2 p Partial major overhaul of the main feed water pump LAC30 and GKN II fuel elements and transported to the Neckarwestheim on-site the main condensate pump LCB10. interim storage facility. At the end of 2019, 716 GKN II fuel elements p Major overhaul of main steam valves at LBA10 and LBA40. (dry storage, wet storage and reactor) and 49 GKN I fuel elements p MaintenancePositionierung: activities on transformers and on (wet storage) were thus in the GKN II facility. Since 1 January 2019, bothBezug, grid connections. links, unten the on-site interim storage facility in Neckarwestheim has been p Maintenance on the and on mechanical components ­operated by the federally owned Gesellschaft für Zwischenlagerung in Xthe = main 20,475 redundancy Y 2/6.= 95,25 B = 173,5 H = (BGZ).38,2 This is the implementation of the “Act on the Reorganisation VGB: HKS6K 30 % of Responsibility in Nuclear Waste Management”. Unplannedatw: 100shutdowns 60 0 0 and reactor/turbine trip 3 to 22 September: Unplanned extension of the maintenance.

Power reductions above 10 % and longer than for 24 h 13 June to 9 August: Stretch-out operation January to April and October to December: Load sequence ­operation.

Report Operating results 2019 atw Vol. 65 (2020) | Issue 8/9 ı August/September 453

Operating data

Review period 2019 REPORT

Plant operator: EnBW Kernkraft GmbH (EnKK) Availability factor in % Shareholder/Owner: EnBW Erneuerbare und Konventionelle Capacity factor in % Erzeugung AG (98,45 %), ZEAG Energie AG, Deutsche Bahn AG, 100 Kernkraftwerk Obrigheim GmbH Plant name: Kernkraftwerk Neckarwestheim II (GKN II) 94 90 92 93 93 Address: EnBW Kernkraft GmbH, Kernkraftwerk Neckarwestheim, 90 89 88 Im Steinbruch, 74382 Neckarwestheim, Germany Phone: +49 7133 13-0 80 81 E-mail: [email protected] Web: www.enbw.com 70

First synchronisation: 01-03-1989 60 Date of commercial operation: 04-15-1989 Design electrical rating (gross): 1,400 MW 50 Design electrical rating (net): 1,310 MW Reactor type: PWR 40 Supplier: Siemens/KWU

The following operating results were achieved: 30 Operating period, reactor: 7,706 h Gross electrical energy generated in 2019: 10,411,400 MWh 20 Net electrical energy generated in 2019: 9,758,339 MWh Gross electrical energy generated since 10 first synchronisation until 12-31-2019: 340,241,584 MWh Net electrical energy generated since 0 92 90 93 93 95 89 81 94 first synchronisation until 12-31-2019: 318,174,476 MWh 2012 2013 2014 2015 2016 2017 2018 2019 Availability factor in 2019: 94.03 % Availability factor since date of commercial operation: 92.92 % Collective radiation dose of own and outside personnel in Sv Capacity factor 2019: 88.00 % Capacity factor since 10 date of commercial operation: 92.55 % Downtime 9 (schedule and forced) in 2019: 5.87 % Number of reactor scrams 2019: 0 8

Licensed annual emission limits in 2019: 7 Emission of noble gases with plant exhaust air: 1.0 · 1015 Bq Emission of iodine-131 with plant exhaust air: 1.1 · 1010 Bq 6 Emission of nuclear fission and activation products with plant waste water (excluding tritium): 6.0 · 1010 Bq 5 Proportion of licensed annual emission limits for radioactive materials in 2019 for: 4 Emission of noble gases with plant exhaust air: 0.0098 % Emission of iodine-131 with plant exhaust air: < limit of detection 3 Emission of nuclear fission and activation products with plant waste water (excluding tritium): < limit of detection 2 Collective dose: 0.096 Sv 1

0.13 0.08 0.10 0.12 0.08 0.15 0.12 0.10 0 2012 2013 2014 2015 2016 2017 2018 2019

Report Operating results 2019 atw Vol. 65 (2020) | Issue 8/9 ı August/September

Philippsburg 2 454

Operating sequence in 2019

Electrical output in %

100 REPORT 90 80 70 60 50 40 30 20 10

January February March April May June July August September October November December

In100 the reporting year 2019 the nuclear power plant block Integrated management system (IMS) EnKK ­Philippsburg 2 (KKP 2) generated a gross output of 10,993,639 MWh. (NPP P, GKN, KWO) The80 net electrical power generation consisted of 10,323,151 MWh. The integrated management system (IMS) of the EnBW Kernkraft The plant was 7,939 h on the grid. This corresponds to a availabilty GmbH (EnKK) with its partial system for nuclear safety (SMS), factor60 of 90.63 %. ­quality management (QMS/QSÜ) as well as environmental Since the commissioning of the plant 366,161,155 MWh gross and and energy­ management (UMS, EnMS, Umwelt- und Energie­ 347,076,47340 MWh net were generated managementsystem) were also in 2019 continuously further ­developed. Scope and content of each process descriptions were Planned20 shutdowns gradually adapted to the different internal requirements and related 11 May to 15 June: 33nd refuelling and annual major inspection. approval criteria. Besides the confirmation of conformity for the 0 Major inspection work carried out: IMS, the recertification of the EnKK energy management system p Inspection of one of the three main feed pumps. (EnMS, Energiemanagementsystem) according to DIN EN ISO 50001 p 100Eddy current testing of two of the four steam generators. took place in 2019 to improve energy efficiency. The certificate p Leak test of reactor containment. was thus exten­ded by three years. p 80Inspection of the main cooling water system. The completeness and effectiveness of the process-oriented IMS, p Engine replacement on two of six main cooling water pumps. including the quality management measures, were confirmed by p 60Maintenance work on individual emergency power generators. ­appropriate internal audits as well as by a several-day inspection by the expert (ESN) and the supervisory authority at the GKN and KKP Unplanned40 shutdowns and reactor/turbine trip sites. 18 August: Turbine trip (TUSA) via the criterion “high condenser The modular and demand-oriented structure of the IMS ­according pressure”.20 to KTA1402 also enables continuous and efficient adaptation to the site-specific requirements in operation/post-operation in subsequent Power0 reductions above 10 % and longer than for 24 h years. Another important focus will be the gradual integration of 15 March to 11 May: Stretch-out operation ­dismantling aspects into the IMS in order to exploit synergy effects. 26 July to 24 August: Reduction of heat input into the Rhine and compliance with the permissible outlet temperature. Waste management status 15 October to 2 November: Reduction of heat input into the Rhine During the year 2019 in total 2 transportation and storage casks of and compliancePositionierung: with the permissible outlet temperature. type CASTOR© V/19 were stored in the on-site intermediate storage. 8 NovemberBezug, to 3 links, December: unten Reduction of heat input into the Rhine Altogether 33 loaded CASTOR© V/19 and 29 loaded CASTOR© and complianceX = 20,475 with the Ypermissible = 95,25 outlet temperature. B = 173,5 H = 38,2V/25 casks were at the on-site intermediate storage. VGB: HKS6K 30 % atw: 100 60 0 0

Report Operating results 2019 atw Vol. 65 (2020) | Issue 8/9 ı August/September 455

Operating data

Review period 2019 REPORT

Plant operator: EnBW Kernkraft GmbH (EnKK) Availability factor in % Shareholder/Owner: EnBW Erneuerbare und Konventionelle Capacity factor in % Erzeugung AG (98,45 %), ZEAG Energie AG, Deutsche Bahn AG, 100 Kernkraftwerk Obrigheim GmbH Plant name: Kernkraftwerk Philippsburg 2 (KKP 2) 90 Address: EnBW Kernkraft GmbH, Kernkraftwerk Philippsburg, 90 90 89 P.O. box 11 40, 76652 Philippsburg, Germany 86 Phone: +49 7256 95-0 80 82 82 E-mail: [email protected] Web: www.enbw.com 70 73

First synchronisation: 12-17-1984 60 63 Date of commercial operation: 04-18-1985 Design electrical rating (gross): 1,468 MW 50 Design electrical rating (net): 1,402 MW Reactor type: PWR 40 Supplier: Siemens/KWU

The following operating results were achieved: 30 Operating period, reactor: 7,865 h Gross electrical energy generated in 2019: 10,606,307 MWh 20 Net electrical energy generated in 2019: 9,963,117 MWh Gross electrical energy generated since 10 first synchronisation until 12-31-2019: 376,767,462 MWh Net electrical energy generated since 0 86 73 82 91 82 63 91 90 first synchronisation until 12-31-2019: 357,039,589 MWh 2012 2013 2014 2015 2016 2017 2018 2019 Availability factor in 2019: 89.63 % Availability factor since date of commercial operation: 88.78 % Collective radiation dose of own and outside personnel in Sv Capacity factor 2019: 89.31 % Capacity factor since 10 date of commercial operation: 88.51 % Downtime 9 (schedule and forced) in 2019: 10.37 % Number of reactor scrams 2019: 0 8

Licensed annual emission limits in 2019: 7 Emission of noble gases with plant exhaust air: 1.1 · 1015 Bq Emission of iodine-131 with plant exhaust air: 1.1 · 1010 Bq 6 Emission of nuclear fission and activation products with plant waste water (excluding tritium): 5.5 · 1010 Bq 5 Proportion of licensed annual emission limits for radioactive materials in 2019 for: 4 Emission of noble gases with plant exhaust air: 0.11 % Emission of iodine-131 with plant exhaust air: 0.0002 % 3 Emission of nuclear fission and activation products with plant waste water (excluding tritium): 0.06 % 2 Collective dose: 0.072 Sv 1

0.22 0.16 0.14 0.15 0.18 0.07 0.12 0.07 0 2012 2013 2014 2015 2016 2017 2018 2019

Report Operating results 2019