Modifications of the document Version Date Authors or paragraphs modified Description or comments 2.0 17-03-2016 R. Alzbutas (LEI), S. Ostapchuk (SSTC) with support of other authors (see above) All Version which jointly Includes WP21 and WP22 parts as decided in technical meeting 3.0 18-04-2016 R. Alzbutas (LEI), S. Ostapchuk (SSTC) with support of other authors (see above) All Pre-final version available for discussions and internal review and for updates including additional contributions 4.0 09-06-2016 E. Raimond (IRSN) All Final review (approval). Editorial modifications and few additions with updates. Other national examples may be useful in appendix (for the review phase). 5.0 31-12-2016 R. Alzbutas (LEI), S. Ostapchuk (SSTC) with support of other authors (see above) All Addressed and incorporated end user comments from September 2016 workshop in Vienna. 6.0 22-02-2017 E. Raimond (IRSN) Few Editorial modifications List of diffusion European Commission (scientific officer) Name name Organization Passalacqua Roberto EC
ASAMPSA_E Project management group (PMG) Name First name Organization Raimond Emmanuel IRSN Project coordinator Guigueno Yves IRSN WP10 coordinator Decker Kurt UNIVIE WP21 coordinator Klug Joakim LRC WP22 coordinator until 2015-10-31 Kumar Manorma LRC WP22 coordinator from 2015-11-01 Wielenberg Andreas GRS WP30 coordinator 2016-03-31 Löffler GRS WP40 coordinator WP30 coordinator from 2016-04-01 REPRESENTATIVES OF ASAMPSA_E PARTNERS Name First name Organization Mustoe Julian AMEC NNC Grindon Liz AMEC NNC Pierre Cecile AREVA Godefroy Florian AREVA Dirksen Gerben AREVA Kollasko Heiko AREVA Pellisseti Manuel Bruneliere Hervé Hasnaoui Chiheb AREXIS Hurel François AREXIS Schirrer Raphael AREXIS Gryffroy Dries Bel V De Gelder Pieter Bel V Van Rompuy Thibaut Bel V Jacques Véronique Bel V Cazzoli Errico CCA Vitázková Jirina CCA Passalacqua Roberto EC Bonnevialle EDF Bordes Dominique EDF Vasseur Dominique EDF Panato Eddy EDF Romanet François EDF Julien EDF Gallois EDF Mohamed EDF Brac Pascal EDF Jan Philippe EDF Nonclercq Philippe EDF Bernadara Pietro EDF Benzoni Stéphane EDF Sylvie EDF Rychkov Valentin EDF Coulon Vincent EDF Banchieri Yvonnick EDF Burgazzi Luciano ENEA Karlsson Anders FKA Hultqvist Göran FKA Pihl Joel FKA Ljungbjörk FKA KÄHÄRI Petri FKA Wielenberg Andreas GRS Loeffler GRS Tuerschmann Michael GRS Mildenberger Oliver GRS Sperbeck Silvio GRS Serrano Cesar IEC Benitez Francisco Jose IEC Del Barrio Miguel A. IEC Apostol Minodora RATEN ICN Farcasiu Mita RATEN ICN Nitoi Mirela ICN Stefanova Antoaneta Groudev Pavlin INRNE Laurent IRSN
Clement Christophe IRSN Duluc IRSN Leteinturier Denis IRSN Raimond Emmanuel IRSN Corenwinder François IRSN Pichereau Frederique IRSN Georgescu Gabriel IRSN Bonneville Hervé IRSN Denis Jean IRSN Bonnet Jean-Michel IRSN Lanore Jeanne-Marie IRSN Espargilliere Julien IRSN Mateescu Julien IRSN Guimier Laurent IRSN Bardet Lise IRSN Rahni IRSN Bertrand Nathalie IRSN Duflot Nicolas IRSN Scotti Oona IRSN Dupuy Patricia IRSN Thierry IRSN Rebour Vincent IRSN Guigueno Yves IRSN Prošek Andrej JSI Volkanovski Andrija JSI Alzbutas Robertas LEI Olsson Anders LR Häggström Anna LR Klug Joakim LR Kumar Manorma LR Kowal NCBJ Borysiewicz Mieczyslaw NCBJ Potempski Slawomir NCBJ Vestrucci Paolo NIER La Rovere Stephano NIER Brinkman Hans NRG Zhabin Oleg SSTC Bareith Attila NUBIKI Lajtha NUBIKI Siklossy Tamas NUBIKI Caracciolo Eduardo RSE Gorpinchenko Oleg SSTC Dybach Oleksiy SSTC Vorontsov Dmytro SSTC Grondal Corentin TRACTEBEL Claus Etienne TRACTEBEL Oury Laurence TRACTEBEL Dejardin Philippe TRACTEBEL Yu Shizhen TRACTEBEL Mitaille Stanislas TRACTEBEL Zeynab Umidova TRACTEBEL Bogdanov Dimitar TUS Ivanov Ivan TUS Kubicek Jan UJV Holy Jaroslav UJV Kolar Ladislav UJV Jaros Milan UJV Hustak Stanislav UJV Decker Kurt UNIVIE Prochaska Jan VUJE Halada Peter VUJE Stojka Tibor VUJE REPRESENTATIVE OF ASSOCIATED PARTNERS (External Experts Advisory Board (EEAB)) Name First name Company Hirata Kazuta JANSI Hashimoto Kazunori JANSI Inagaki Masakatsu Yamanana Yasunori TEPCO Coyne Kevin US-NRC González Michelle M. US-NRC
In general, considerations should also be to those hazard combinations that include coincident independent hazards without any correlation. Combination of independent hazards should be identified and selected by applying screening methods accompanied with expert judgement. In absence of screening a comprehensive list of hazard combinations, including the extreme weather hazard in question, could be assembled that is not possible to assess in an appropriate manner due to the large number of the identified combinations. In the following Table 1 some criteria, which application should lead to the list of possible combinations of external events (considerably smaller than mentioned above [30] and practically treatable) are presented. The relevant SKI Report “Guidance for External Events Analysis” [30] is summarised in various ASAMPSA_E reports (e.g. [34]). Criteria for irrelevant combinations of external events (hazards) Independence Definition Influence Individual event selection criteria Events occur independently of each other in time AND Probability of simultaneously occurring events is low Events are independent in time AND Several external events are included in individual event definition Events are independent in time AND Events affect the same NPP safety function AND Combined effect on safety function is not larger than what would be in case of most severe event. Individual external events selection criteria are applicable to the combinations as well. The criteria for selection of events (hazards) combinations may be related to the consideration of these conditions: More general definition of events Several external events are included in a more general definition of event. Events interdependence Base for the definition of important external events (their combinations) is whether they are dependent or not. Different safety functions of NPP are affected If condition 2 is satisfied, then other condition is considered: whether different NPP safety functions are affected. If events in combination affect the same function, the 4th condition has to be applied. The degree of impact on NPP safety functions If two dependent external events affect the same safety function, these events still might make an important combination. The effect in combination may be more severe than effect of separate events. Individual external events criteria If a combination is judged to be important even after the application of all the above rules, then individual external events criteria has to be applied for the combination as well.
1.7. Very strong composite glazed frost glazed frost thickness/diameter on the wire of freezing rain support, mm ≥35 1.8. Very strong freezing rain glazed frost thickness/diameter on the wire of freezing rain support, mm ≥20 1.9. Very strong wet snow sleet glazed frost thickness/diameter on the wire of freezing rain support, mm ≥35 1.10. Hard frost minimum air temperature, °C; duration of hard number of days ≤-30; 1–3 1.11. Heat maximum air temperature, °C; duration of heat, number of days ≥30; ≥3 1.12. Frost within active plant vegetation period daily average air temperature, °C; air (soil surface) temperature, °C ≥10; <0 1.13. Drought within active plant vegetation period daily average air temperature, °C; hydrothermal coefficient – a numerical duration, number of days ≥10; <0.5; >30
1.14. Drought in the forests complex forest rate of fire – a numerical value; forest fire risk ≥10 000; V 1.15. Very fog visibility, m; duration, h ≤100 ≥12; 1.16. Very strong storm (complex of hazardous meteorological phenomena: thunderstorm and / or flaw strong rain hail) fact; maximum wind speed, m/s; amount of precipitation, mm/h.; hailstone diameter, mm is; 15–28; ≥15/≤12; ≥6 2. Catastrophic meteorological phenomena 2.1. Hurricane maximum wind speed, m/s ≥33 2.2. Very strong rain amount of precipitation, mm; duration, h >80; ≤12 2.3. very strong rain amount of precipitation, that precipitated within 5 days or less, exceeds monthly standard climate rate, times >3 2.4. Very strong snow amount of precipitation, mm; snow pack increase, cm; duration, h >30; >30; ≤12