Primerjava orodij za simulacijo nenadzorovanega sproščanja plinov v okolico

Heindler, Anže (author), Novosel, Barbara (mentor)

V magistrskem delu sta bila primerjana računalniška programa za simulacijo nenadzorovanega sproščanja nevarnih snovi na podlagi več različnih scenarijev izpusta vodikovega klorida v okolico. Prosto dostopen program ALOHA je poenostavljen program za simulacijo izpusta snovi oziroma plina, med tem, ko je plačljiv program PHAST nekoliko zahtevnejši in kompleksnejši za uporabo. V uvodnem poglavju dela so opredeljene značilnosti programov, vhodni podatki za model ter prednosti in slabosti obeh programov. V nadaljevanju so zapisane lastnosti amonijaka in vodikovega klorida. Amonijak je bil uporabljen zgolj v simulaciji kontrolnega scenarija, vodikov klorid pa tako v simulaciji kontrolnega scenarija kot tudi v simulaciji eksperimentalnega dela, kjer je bilo obravnavanih več scenarijev izpusta. Za preverbo pravilne uporabe programa PHAST sta bili izvedeni dve kontrolni simulaciji. Rezultate sem primerjal z literaturnimi podatki. Cilj magistrskega dela je bil primerjati rezultate simulacij nenadzorovanih izpustov dveh nevarnih snovi z omenjenima programoma. Izvedeni sta bili dve kontrolni simulaciji (za vodikov klorid in amonijak) ter štiri simulacije izpusta vodikovega klorida ob njegovem skladiščenju in uporabi v podjetju, v katerem se uporablja v proizvodnji. Kljub upoštevanim identičnim parametrom sta programa podala različne rezultate. Program ALOHA je podal v večini primerov dva do trikrat večja vplivna območja. Program PHAST omogoča lažjo preglednost rezultatov, izris vplivnega območja po 90 sekundah izhajanja in lažjo korekcijo vplivnih območij. Kljub temu menim, da je program ALOHA primeren in ustrezen za uporabo ob modeliranju vplivnih območij za izdelavo ocen tveganja in varnostnih poročil, saj poda nekoliko večje vplivno območje, kar je sprejemljivo z vidika večje varnosti.

• Language: Slovenian
• Keywords: vodikov klorid, ALOHA, PHAST, vplivno območje, ERPG
• Work type: Master's thesis/paper
• Typology: 2.09 - Master's Thesis
• Organization: FKKT - Faculty of Chemistry and Chemical Technology
• Year: 2021
• PID: 20.500.12556/RUL-124809
• COBISS.SI-ID: 52769283
• Publication date in RUL: 19.02.2021

HEINDLER, Anže, 2021, Primerjava orodij za simulacijo nenadzorovanega sproščanja plinov v okolico [online]. Master’s thesis. [Accessed 26 April 2025]. Retrieved from: https://repozitorij.uni-lj.si/IzpisGradiva.php?lang=eng&id=124809

Secondary language

• Language: English
• Title: Comparison of tools for simulation od uncontrolled gas release in the environment

Abstract

In this work I compared two programs for simulations of the uncontrolled release of hazardous substances in environment based on several different hydrogen chloride release scenarios. The free program ALOHA is a simplified program for simulations of the release of a substance or gas, while commercial program PHAST is more demanding and complex for use. The introductory part of the work defines the characteristics of the programs, the model input data and the advantages/disadvantages of both programs. The properties of ammonia and hydrogen chloride are given and explained in the following. Ammonia was used only in the control simulation and hydrogen chloride in both the control and the experimental part simulations, where several release scenarios were considered. Two control simulations were performed to check the appropriate use of the PHAST program, and the results were compared to the literature data. The aim of this work was to compare the results of the simulations of uncontrolled releases of two hazardous substances with the two mentioned programs. Two control simulations (for hydrogen chloride and ammonia) and four simulations of the release of hydrogen chloride during its storage and production use in the company were carried out. Despite the identical parameters taken into account in simulation, the two programs gave different results. The ALOHA program usually resulted two to three times larger areas of influence. The paid PHAST program enables easier transparency of the results, drawing of the impact area after 90 seconds of release and easier correction of the impact areas. Nevertheless, I believe that the ALOHA program is suitable for modeling the area of influence when producing risk assessments and safety reports, as it results larger areas of influence, which is applicable in terms of added safety.

• Keywords: hydrogen chloride, ALOHA, PHAST, impact zone, ERPG