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TRANSCRIPT
V&V OF SAMG
AT
DUKOVANY NPP
12-14 December 2016Vienna IAEA
Miroslav Trnka
OVERVIEW
• General
• History of EOP and SAMG
• Validation
• Drill
1
CZECH REPUBLIC
� NPP Temelín
2 Units VVER 1000/V320
� Unit 1 - 2002 � Unit 2 - 2003� Installed capacity 2 x 1059 MWe� 14 - 15 GWh production per year
� NPP Dukovany
4 Units VVER 440/V213
� Unit 1 - 1985 � Unit 2 - 1986� Unit 3 - 1986� Unit 4 – 1987� Installed capacity 4 x 500 MWe� 15 - 16 GWh production per year
HISTORY OF EOPS AND SAMG
1993 begin development of EOPs, Westinghouse philosophy,
1999 implementation of EOPs
2001 begin development of SAMGs
2003 implementation of SAMGs
2010 upgrade SAMG – shutdown mode and Spend Fuel Pool
2013 begin development of DAM Program (FLEX)
2015 begin development of EDMG
2016-2017 Upgrade of SAMG
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EDUCATION OF SA
Four groups of knowledge levels :
A) – members of TSC, shift supervisor, safety engineer and head of ERC
B) – CR crew, radiological in ERC and TSC
C)- members of ERC
D)- others
Basic educationTheory + SAMG A-16/ B -8/ C-2/- hours
Periodic (every year) A -5 /B-2 / C-1/- hours
4
EDUCATION OF SA
SAMG:
TSC + CR crew + Shift supervisor + safety engineer
Phenomenology: melting fuel, hydrogen, cooling in vessel, melt through RPV + visualization by SW ATLAS
Coordination drills:TSC members in shelter and CR crew on simulator 4 hour × 2 per year
Exercise by Plant plan
Shift are drill on usage mobile and portable devices
5
VALIDATION SAMG
Analyses
• verification of the proposed strategy• Changes and modifications of strategy
• Melcor• Astec
• Description of phenomenology• Time windows
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In Vessel Retention, LOCA 200 mm
[K]
[K]
0.952 hod.
48.000 hod.6.690 hod.3.078 hod.
2.286 hod.1.397 hod.
[K]
[K]
0.952 hour
48.000 hour6.690 hour3.078 hour
2.286 hour1.397 hour
[K]
[K]
0.952 hod.
48.000 hod.6.690 hod.3.078 hod.
2.286 hod.1.397 hod.
[K]
[K]
0.952 hour
48.000 hour6.690 hour3.078 hour
2.286 hour1.397 hour
Capacity of new PARs
LOCA 200 mm bez TQ: Celková bilancia vodíku pri LOCA 200 mm
Obr. 2.11. Hmotnosti vodíka.
0.
50.
100.
150.
200.
250.
300.
350.
400.
450.
0 2 4 6 8 10 12 14 16 18 20 22 24
Čas [h]
Hm
otn
osť
[kg
]
celková vyrobená
zachytená v PO
zachytená v HZ
zrekombinovaná
uniknutá do okolia
EDU: LOCA 200 mm na SV so zaplavením ŠR a drenážou žľabov, scenár 2 ASTEC V 1.3 rev. 2
SAMG - VALIDATION
Full scope simulator:
EOPs – transitions to SAMG
The First hours in SA• SACRG –
• start IVR (flooding of RPV, depressurissation of I.O• Level in SGs• Isolation of CNTM• Electric power• Habitability of CR
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IN VESSEL RETENTION
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DAM PROCEDURE
11 procedures , short, single-instruction on the use of mobile and portable devices to fulfill some functions, sometimes several variations.
Usage in SAMGs, EOPs (blackout), SD EOPs, EDMG
Issue from 2014, This is necessary to drill shift and fire brigade
Examples:
• Feeding SGs by mobile pump (from 2005)• Makeup RCS using pump powered by mobile DG• Loss of vital instrumentation or control power• SFP makeup• Isolation of Hydroaccumulators
11
1212
KEY PARAMETERS MEASUREMENT
Portable I&C Devices
� SAMG entry parameters
� Measurement from transmitter or on line to Control Room
� Measurement in voltage or current transform to real value of parameter
�Not measured in breach of the sensor or routes between sensor and transmitter
DAM – FEEDING OF SG (AND SFP)
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Fire brigade mobile pump – 7 pc (2 pumps
portable)
EMERGENCY PREPAREDNESS
• Fuel tank truck for refilling to SBO diesel and gasoline to small power generators –
Volume (15 m3 + 2 m3)
• Hose truck with pump 6 m3 / minute for long-distance transport of water up to 2.6 km - 1 pc
Another pump 6 m3 / min at a trailer for water- supply 1 piece
ALTERNATIVE FEEDING OF RCS, CTNM, SFP
� Injection after loss of cooling into RPV, SFP or spray system using Fire brigade pump
�Valves and quick operated valves is possible to open/close by portable devices
�New procedure for using these devices� Injection using T-joints – is necessary to cut piping� Injection using flange – dismantling, without cutting
Objímka
T-JOINT
PLACE TO CUTTING
FLANGE
PLACE FOR FLANGE – AIR PIPING
USAGE OF FLANGE
PORTABLE DRIVER
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CONTROL QOV BY PORTABLE DRIVER-
CONNECTION
22
MOBIL DG
�4 × 320 kW (+ 4 cable cars)
�Supply one division of battery section (valves, I&C
measurement, PAMS)
+ one pump directly about 70 kW
POSSIBILITY TO SUPPLY PUMP IN CONTROL
ZONE
Emergency exit/entry doors
STAGING OF MOBILE DG DURING OPERATION
Staging of mobile DG
CONCLUSION.
1. Aanalyses depends on the model
2. Full Scope Simulator has its technical limits
and because after the start of SA is probably feasible only support activities on the place (because of possible non habitability in CR)
3. We place great emphasis on drills
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END
Do not forget that preventionis more important than repression
Question ?
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