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Title:VARNOST SISTEMA ZA ČIŠČENJE KONDENZATA
Authors:ID Kodrič, Domen (Author)
ID NOVAK PINTARIČ, ZORKA (Mentor) More about this mentor... New window
ID SIMONIČ, MARJANA (Comentor)
Files:.pdf VS_Kodric_Domen_2013.pdf (2,21 MB)
MD5: A21151459DBBD5144E65795741D2040B
 
Language:Slovenian
Work type:Bachelor thesis/paper
Typology:2.11 - Undergraduate Thesis
Organization:FKKT - Faculty of Chemistry and Chemical Engineering
Abstract:V diplomskem delu smo obravnavali obrat čiščenja kondenzata, ki se nahaja v sekundarnem delu Nuklearne elektrarne Krško (NEK). Zaradi kontaminacije vode v posameznih delih procesa je potrebno čiščenje kondenzatne vode. Kemijsko čiščenje kondenzatne vode poteka z uporabo ionskih izmenjevalcev. Regeneracija le-teh poteka v regeneracijskih posodah s prečrpavanjem kemikalij HCl in NaOH iz rezervoarjev. Nezaželeni obratovalni pogoji lahko negativno vplivajo na procesno opremo, jo poškodujejo in povzročijo nevarnost za zaposlene. V delu smo izvedli analizo varnosti procesa regeneracije ionske smole v sistemu za čiščenje kondenzata v NEK. Uporabili smo metodo HAZOP, ki identificira nevarnosti v sistemu. Z izvedbo te študije smo predvideli možne scenarije in opisali njihove posledice. Na tej osnovi smo skonstruirali drevo dogodkov in drevo odpovedi. Slednji predstavljata zaporedja vzrokov in neželenih dogodkov, ki lahko privedejo do nesreč. Ob tem smo izvedli kvantitativno vrednotenje pogostosti nevarnega dogodka. Prikazan je preračun masnega pretoka pri iztekanju nevarne kemikalije NaOH iz rezervoarja.
Keywords:varnost, nuklearna elektrarna, čiščenje kondenzatne vode, metoda HAZOP, drevo odpovedi, drevo dogodkov.
Place of publishing:Maribor
Publisher:[D. Kodrič]
Year of publishing:2013
PID:20.500.12556/DKUM-42983 New window
UDC:66.012:331.45(043.2)
COBISS.SI-ID:17452054 New window
NUK URN:URN:SI:UM:DK:XYE74CVA
Publication date in DKUM:29.11.2013
Views:2510
Downloads:329
Metadata:XML DC-XML DC-RDF
Categories:KTFMB - FKKT
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Secondary language

Language:English
Title:SAFETY OF CONDENSATE POLISHING SYSTEM
Abstract:The subject of this diploma thesis is the plant for polishing the condensate water which is located in the secondary part of the Krško Nuclear Power Plant (NEK). It is necessary to clean the condensate water due to its contamination within various parts of the process. Chemical polishing of condensate water is accomplished by using ion exchangers. Regeneration of those is performed in the regenerating tanks by pumping the chemicals HCl and NaOH from the reservoirs. Undesirable operating conditions may negatively affect the process equipment, cause its damage and widespread danger to staff. In this diploma work, the safety analysis of process for ion resins regeneration within the condensate polishing system in the NEK was accomplished. The HAZOP method was used for identification of process hazards. By conducting this study, we have predicted possible scenarios and described their consequences. On the basis of the previous methods, we constructed the event tree and the fault tree. They represented a sequences of causes and negative events that could lead to an accident. A quantitative evaluation of hazardous event frequency was also performed. The mass flow rate of NaOH leaking from the tank was calculated.
Keywords:safety, nuclear power plant, polishing condensate water, HAZOP method, event tree, fault tree.


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