atw 2018-05v6

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atw Vol. 63 (2018) | Issue 5 ı May 348 Isar 2 REPORT Operating sequence in 2017 100 90 80 70 60 50 40 30 20 10 Electrical output in % January February March April May June July August September October November December On 22 January 1988 unit 2 of Isar nuclear power plant (KKI 2) fed for the first time electricity into the grid. 30 years later KK2 convinces 80 with position number 1 of the German generation statistic among nuclear power plants. With more than 11.5 b kilowatt hours of 60 generated power in the year 2017, KK2 leads the German ranking despite of frequently providing system services (in the year 2017 this 40 corresponded to the supply of standard performance of 7.8 full-load days of non-produced power), 13 days of stretch-out operation 20 ( before downtime), the additional short shutdown and the annual revision. 100 0 Planned shutdowns 100 14 to25 January: Short shutdown with refuelling. Power plant KKI 2 remained shortly shutdown from 14 until 25 80 January for refuelling and the intended pre-commissioning-works with duration of nearly 12 days. 36 fuel elements were inserted. 860July to 20 July: Refuelling with annual revision. Refuelling took place from 8 until 25 July with duration of 17.6 days. The 40 revision was completed 8 hours before its actually scheduled date. During the revision 44 new fuel elements were inserted. 20 Unplanned shutdowns and reactor/turbine trip 0 After the grid synchronisation on 25 July at 14:41 h started the scheduled performance increase with the given gradients. During the power consumption up to 450 MWel generator power the turbine automated test system „protection systems“ was examined. Positionierung: Approximately 45 seconds after starting the subgroup control for the turbine „protection systems„ a reactor scram and Bezug, links, unten turbine scram were released on 25 July at 15:56 h. The cause was a valve malposition inside the hydraulic system of the turbine (see ME VGB: 01/2017). HKS6K The generator 30 % was synchronised again with the grid on 26 July at 23:29 h. X = 20,475 Y = 95,25 B = 173,5 H = 38,2 atw: 100 60 0 0 Power reductions above 10 % and longer than for 24 h None. National Peer Review 25 to 27 October: National Peer Review “Risk assessment”. WANO Review/Technical Support Mission 31 July to 3 August: WANO pre-visit. Delivery of fuel elements In the reporting year 28 uranium fuel elements from Westinghouse were delivered. 32 uranium fuel elements are in stock at the dry storage. Waste management status Currently 35 CASTOR® V-casks (13 units CASTOR® V/19 (85-typ), 13 units of CASTOR® V/19 (96-type), 9 units of CASTOR® V/52 (85-type)) and 7 TN®24E-casks are stored in the on-site intermediate storage. During the period from 18 September 2017 until 1 December 2017 6 TN®24E-casks were successfully loaded at the KKI 2. With this loading campaign no further fuel element transportations are further necessary until EoL (31 December 2022). Technical optimisation of the KKI BELLA: The commissioning of the unit safety relevant trades took place during the calendar weeks 49 until 51. The functional testing and acceptance testing (FAP) were successfully completed in the presence of the supervising expert in calendar week 51. General points Performance changes of ±100 MW from approx. 1,270 MWe1 for the prequalification of the frequency arrangement were carried out on 22 March 2017 between 14:00 h and 16:53 h. Form 8 August 2017 until 10. August 2017 four laden journeys were carried out for the examination and commissioning of the retrofitted predictor in the adaptive power distribution regulation (ALV) for an automatically adjustment of the D-bank characteristic curve impact. Thereby the minimum performance of approximately 560 MW MWel equivalent to a reactor performance of approx. 46 % was achieved. For the upgrade (exchange of modules)) of the PRINS processor (process computer) lowering phases in each case of 2 x 35 MW were run due to the limited availability of the calculation value “Thermal Reactor Power” in calendar weeks 38, 39 40 and 41. Report Operating results 2017 – Part I*
atw Vol. 63 (2018) | Issue 5 ı May 349 Operating data Review period 2017 REPORT Plant operator: PreussenElektra GmbH Shareholder/Owner: PreussenElektra GmbH (75 %), Stadtwerke München GmbH (25 %) Plant name: Kernkraftwerk Isar 2 (KKI 2) Address: PreussenElektra GmbH, Kernkraftwerk Isar, Postfach 11 26, 84049 Essenbach, Germany Phone: 08702 38-2465, Telefax: 08702 38-2466 Web: www.preussenelektra.de 100 90 80 93 Availability factor in % Capacity factor in % 96 94 94 90 89 96 91 First synchronisation: 01-22-1988 Date of commercial operation: 04-09-1988 Design electrical rating (gross): 1,485 MW Design electrical rating (net): 1,410 MW Reactor type: PWR Supplier: Siemens/KWU 70 60 50 40 The following operating results were achieved: Operating period, reactor: 8,022 h Gross electrical energy generated in 2017: 11,523,513 MWh Net electrical energy generated in 2017: 10,901,556 MWh Gross electrical energy generated since first synchronisation until 12-31-2017: 341,598,323 MWh Net electrical energy generated since first synchronisation until 12-31-2017: 322,966,901 MWh Availability factor in 2017: 91.53 % Availability factor since date of commercial operation: 93.21 % Capacity factor 2017: 91.15 % Capacity factor since date of commercial operation: 92.27 % Downtime (schedule and forced) in 2017: 8.47 % Number of reactor scrams 2017: 1 Licensed annual emission limits in 2017: Emission of noble gases with plant exhaust air: 1.1 · 10 15 Bq Emission of iodine-131 with plant exhaust air: 1.1 · 10 10 Bq Emission of nuclear fission and activation products with plant waste water (excluding tritium): 5.5 · 10 10 Bq Proportion of licensed annual emission limits for radioactive materials in 2017 for: Emission of noble gases with plant exhaust air: 0.057 % Emission of iodine-131 with plant exhaust air: < limit of detection Emission of nuclear fission and activation products with plant waste water (excluding tritium): < limit of detection Collective dose: 0.139 Sv 30 20 10 0 10 9 8 7 6 5 4 3 2 93 96 2010 2011 94 2012 96 2013 95 2014 89 2015 Collective radiation dose of own and outside personnel in Sv 96 92 2016 2017 1 0 0.23 0.08 0.14 2010 2011 2012 0.08 2013 0.09 2014 0.25 2015 0.06 2016 0.14 2017 Report Operating results 2017 – Part I*
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