黑料不打烊

Pasi奴lyta modulini懦 personalo sl臈ptuvi懦 sistemos 寞rengimo koncepcija, kurios sud臈tin臈s dalys yra pa膷ios sl臈ptuv臈s bei t懦 sl臈ptuvi懦 racionalus i拧d臈stymas ir charakteristik懦 parinkimas. 厂濒臈辫迟耻惫臈s darbe vadinamos personalo sl臈ptuv臈mis, o tarp saugos specialist懦 jos dar 啪inomos kaip lokalios sl臈ptuv臈s (angl. shelters-in-place). Nustatyta, kad personalo sl臈ptuvi懦 konstrukcijos yra gana gerai pa啪寞stamos pramonin臈s saugos profesionalams bei jas projektuojan膷i懦 ir statan膷i懦 寞moni懦 in啪inieriams. Rasta, kad sl臈ptuvi懦 sistemos formavimas, kuriuo siekiama u啪tikrinti kuo didesn臋 pavojingo pramon臈s objekto personalo saug膮, iki 拧iol yra atviras klausimas. I拧nagrin臈ta bendriausia sl臈ptuvi懦 klasifikacija. Aptartos plienin臈s ir gel啪betonin臈s modulin臈s sl臈ptuv臈s. Trumpai apra拧yti matematiniai (optimizavimo) metodai, kuriuos galima b奴t懦 taikyti ie拧kant geriausio sl臈ptuvi懦 i拧d臈stymo. I拧nagrin臈ta, kaip modulini懦 ant啪emini懦 sl臈ptuvi懦 i拧d臈stymo problema gal臈t懦 b奴ti sprend啪iama naftos rafinerijos atveju.

A concept for the installation of a modular personnel shelter system has been proposed, the components of which are the shelters themselves and the rational arrangement and selection of their characteristics. Shelters are called personnel shelters in the workplace, and among safety specialists they are also known as shelters-in-place. It has been established that the structures of personnel shelters are quite well known to industrial safety professionals and engineers of the companies designing and constructing them. It has been found that the formation of a shelter system, which aims to ensure the greatest possible safety of personnel at a hazardous industrial facility, is still an open question. The most general classification of shelters has been examined. Steel and reinforced concrete modular shelters have been discussed. Mathematical (optimization) methods that could be applied in finding the best arrangement of shelters have been briefly described. It has been examined how the problem of arranging modular ground shelters could be solved in the case of an oil refinery.

Baigiamajame magistro darbe nagrin臈jami cementinio鈥搆alkinio tinko mi拧iniai su nat奴raliu organiniu priedu 鈥� dumbliais. Baigiam膮j寞 darb膮 sudaro trys dalys: analitin臈, metodin臈 ir eksperimentin臈 tiriamoji. Analitin臈je dalyje ap啪velgiamos dumbli懦 savyb臈s, j懦 paplitimas Lietuvoje, ekologin臈 reik拧m臈 bei panaudojimo galimyb臈s. Taip pat aptariami sausieji statybiniai tinko mi拧iniai, cementinio鈥搆alkinio tinko savyb臈s ir moksliniuose 拧altiniuose pateikiami tyrimai apie tink懦 modifikavim膮 organiniais priedais. Metodin臈je dalyje apra拧omos tyrime naudotos 啪aliavos, j懦 savyb臈s, bandini懦 formavimo eiga bei taikyti tyrimo metodai. Pateikiamos mi拧ini懦 sud臈tys ir apra拧omi sukiet臈jusio skiedinio tankio, vandens 寞g臈rio, kapiliarinio vandens 寞g臈rio, lenkimo bei gniu啪dymo stiprio nustatymo metodai pagal taikom懦 standart懦 reikalavimus. Eksperimentin臈je tiriamojoje dalyje pateikiami atlikt懦 tyrim懦 rezultatai ir j懦 analiz臈. Nustatyta, kad dumbli懦 priedas tur臈jo 寞takos tinko mi拧ini懦 vandens poreikiui, sukiet臈jusio skiedinio tankiui, vandens 寞g臈riui ir mechanin臈ms savyb臈ms. Did臈jant dumbli懦 kiekiui ma啪臈jo lenkimo ir gniu啪dymo stipris, o vandens bei kapiliarinis vandens 寞g臈ris did臈jo. Darbo pabaigoje pateikiamos i拧vados ir naudotos literat奴ros s膮ra拧as. Darbo apimtis 鈥� 60 puslapiai, 9 lentel臈s, 21 paveikslai, 53 literat奴ros 拧altiniai, 2 priedai.

The final master's thesis examines cement鈥搇ime plaster mixtures modified with a natural organic additive 鈥� algae. The thesis consists of three parts: analytical, methodological, and experimental research. The analytical part reviews the properties of algae, their distribution in Lithuania, ecological significance, and possible applications. It also discusses dry plaster mixtures, the properties of cement鈥搇ime plaster, and research presented in scientific literature on the modification of plaster mixtures with organic additives. The methodological part describes the raw materials used in the research, their properties, the specimen preparation procedure, and the applied testing methods. Mixture compositions are presented, and the methods used to determine the density, water absorption, capillary water absorption, flexural strength, and compressive strength of hardened mortar according to applicable standards are described. The experimental research part presents the obtained test results and their analysis. The results showed that the algae additive influenced the water demand of plaster mixtures, the density of hardened mortar, water absorption, and mechanical properties. With increasing algae content, flexural and compressive strength decreased, while water absorption and capillary water absorption increased. The thesis concludes with conclusions and a list of references. Thesis volume 鈥� 60 pages, 9 tables, 21 figures, 53 references, 2 appendices.

Nagrin臈jama cilindrini懦 sl臈gini懦 ind懦 gaisro sukelt懦 sprogim懦 metu susidariusi懦 skeveldr懦 matmen懦 vertinimo problema. D臈mesys sutelkiamas 寞 verdan膷io skys膷io ir besiple膷ian膷i懦 gar懦 sprogimus (BLEVE sprogimus). Skeveldr懦 matmen懦 vertinimas apima pirmini懦 duomen懦 gavim膮, 拧i懦 duomen懦 pateikim膮 ir (arba) apdorojim膮 iki Bajeso analizei tinkamos formos ir apdorotos informacijos taikym膮 prognozuojant ind懦 defragmentacij膮 BLEVE avarij懦 metu. Si奴loma skeveldr懦 matmen懦 vertinimo proced奴ra pagr寞sta ankstesniais darbais, kuriuose buvo sukurtas Bajeso metodas, skirtas cilindrini懦 ind懦 irimo schemoms prognozuoti. 艩iame tyrime si奴lomi algoritmai, skirti duomenims apie skeveldr懦 matmenis rinkti ir apdoroti. Algoritmai remiasi trij懦 ind懦 skilimo schem懦, kurios vyrauja ind懦 sprogim懦 statistikoje, egzistavimu. Tokio irimo metu susidaro raketos pavidalo fragmentai, vadinami pailgaisiais antgaliais. 艩ios skeveldros laikomos pavojingiausiais ind懦 irimo produktais. Skeveldr懦 matmen懦 vertinimas apsiriboja pailg懦j懦 antgali懦 ilgio nustatymu 艩io tyrimo rezultatai parengti siekiant geriau 寞vertinti ir suma啪inti rizik膮, kuri膮 kelia galimas skeveldr懦, susidariusi懦 gaisro sukelt懦 ind懦 sprogim懦, poveikis.

The problem of assessing dimensions of fragments generated by fire-induced explosions of cylindrical pressure vessels is considered. The attention is focussed on boiling liquid expanding vapour explosions (BLEVEs). Assessing fragment dimensions comprises acquisition of raw data, bringing/processing this data to the form suitable for a Bayesian analysis and application of processed information to predicting fragmentation of vessels in future BLEVE accidents. The proposed procedure of assessing fragment dimensions is based on our previous work, in which a Bayesian approach to predicting fragmentation/failure patterns of cylindrical vessels has been developed. Algorithms suggested in the present study for collecting and processing data on fragment dimensions are conditioned by an existence of three fragmentation patterns that prevail in the statistics of vessel ruptures and produce rocket-like fragments known as oblong end-caps. These fragments are viewed as the most dangerous products of vessel ruptures. Assessing fragment dimensions is reduced to dealing with the length of the oblong end-caps. The results of this study were developed to better assess and reduce the risks posed by potential exposure to fragments generated by fire-induced container explosions.

艩iame magistro baigiamajame darbe nagrin臈jama medienos degumo problema ir galimyb臈s j膮 ma啪inti taikant antipireninius tirpalus kartu su 诲补啪补颈s. Mediena yra pla膷iai naudojama statyboje, interjere, eksterjere ir kituose sektoriuose, ta膷iau jos eksploatacin臈s savyb臈s laikui b臈gant blog臈ja del aplinkos veiksni懦, o degumas kelia papildom膮 rizik膮, ypa膷 naudojant apsaugines dangas, tokias kaip 诲补啪补颈 ir aliejai. Darbo tikslas yra i拧tirti antipirenini懦 tirpal懦 panaudojimo galimybes bei efektyvum膮 gerinant medienos atsparum膮 ugniai. Tyrimo metu analizuojamos skirting懦 medienos apdorojimo priemoni懦 savyb臈s, atliekami eksperimentai su antipireniniais tirpalais ir 诲补啪补颈s modifikuota mediena bei lyginamos skirtingais b奴dais apdorotos medienos degumo charakteristikos. Darbo naujumas siejamas su tuo, kad tiriama ne tik antipirenini懦 tirpal懦 寞taka medienos degumui, bet ir j懦 efektyvumo pokytis, kai impregnuota mediena papildomai padengiama da啪懦 sluoksniu. Eksperimentiniai tyrimai atlikti taikant standartizuotus metodus: vir拧utin臈s degimo 拧ilumos nustatym膮 kalorimetrine bomba bei reakcijos 寞 ugn寞 bandymus pagal vieno degan膷io objekto metodik膮. Gauti rezultatai leid啪ia 寞vertinti antipirenini懦 tirpal懦 ir da啪懦 s膮veik膮 bei j懦 寞tak膮 medienos degumo savyb臈ms, taip prisidedant prie saugesnio ir efektyvesnio medienos naudojimo statyboje. Baigiam膮j寞 darb膮 sudaro 寞vadas, trys skyriai ir i拧vados. Darbo apimtis yra 66 puslapiai. Tekste yra 52 paveikslai ir 10 lenteli懦. Pirmasis skyrius susideda i拧 penki懦 poskyri懦 ir devyni懦 skyreli懦, antrasis i拧 dviej懦 poskyri懦 ir penki懦 skyreli懦, tre膷iasis i拧 dviej懦 poskyri懦.

This master's thesis investigates the flammability of wood and the possibilities of reducing it by using fire-retardant solutions in combination with paints. Wood is widely used in construction, interior and exterior applications, and other fields; however, its properties deteriorate over time due to environmental factors and its flammability poses an additional risk, especially when protective coatings such as paints and oils are applied. The aim of the study is to evaluate the effectiveness and potential of fire-retardant treatments in improving the fire resistance of wood. The research includes the analysis treatment materials, experimental testing of wood modified with fire-retardant solutions and paints, and a comparison of flammability characteristics of differently treated wood samples. The novelty of study lies in assessing not only the effectiveness of fire-retardant solutions but also their durability and performance when impregnated wood is additionally coated with a protective paint layer. Experimental methods include the determination of gross heat of combustion using a bomb calorimeter and reaction-to-fire testing based on the single burning item method. The results provide insights into the interaction between fire-retardant treatments and paints, contributing to safer and more efficient use of wood in construction. The thesis consists of an introduction, three chapters and conclusions. The volume of the work is 66 pages. The text contains 52 figures and 10 tables. The first chapter consists of five sections and nine subsections, the second of two sections and five subsections, the third of two sections.

Pastat懦 renovacija ir modernizavimas yra 拧i懦 dien懦 kasdienyb臈. Pagal Aplinkos valdymo agent奴ros pateikiam膮 statistik膮, 拧iuo metu Lietuvoje yra renovuoti 4521 daugiabu膷iai, dar 1155 yra renovuojami 拧iuo metu. Ap啪velgiant jau renovuotus daugiabu膷ius, tai sudaryt懦 15,7% vis懦 Lietuvoje esan膷i懦 daugiabu膷i懦 neatitinkan膷i懦 energetinio naudingumo keliam懦 reikalavim懦. Mano pasirinkta darbo tema Gaisrin臈s saugos reikalavim懦 寞gyvendinimo vertinimas renovuojamuose pastatuose mano manymu yra aktuali siekiant u啪tikrinti prie拧gaisrin臋 saug膮 tokiuose objektuose. Renovacijos vietos tampa i拧 dalies statybviet臈mis, 寞 kurias papuola ir eksploatuojami pastatai, o tai sukelia papildom懦 rizik懦. Tokia s膮voka kaip renovacija, prakti拧kai n臈ra i拧skiriama jokiuose gaisrin臋 saug膮 reglamentuojan膷iuose dokumentuose. Tod臈l savo darbe ir noriu ap啪velgti tuos dokumentus, kurie vienaip ar kitaip reglamentuoja vykdomus darbus ir proced奴ras renovacijos proceso metu. Darbe ap啪velgiamos rizikos ir veiksniai 寞takojantys gaisrin臋 saug膮, priemon臈s ir praktikos saugai u啪tikrinti. Trumpai pristatoma situacija Lietuvos ir u啪sienio valstybi懦 patirtis vykdant renovacijos procesus. Antrojoje darbo dalyje nagrin臈jamas renovuojamas gydymo paskirties pastatas, kuriame yra kei膷iama ir paskirtis. Aptariami esami ir naujai pasirinkti gaisrin臈s saugos sprendimai, j懦 寞gyvendinimas. Vertinamas prie拧gaisrin臈s saugos 寞gyvendinimas darb懦 atlikimo metu. Atliekamas teorinis gaisro modeliavimas. I拧vados ir pasi奴lymai pateikiami darbo pabaigoje, ap啪velgiami nustatyti tr奴kumai.

Renovation and modernization of buildings is an everyday occurrence these days. According to statistics provided by the Environmental Management Agency, 4,521 apartment buildings have been renovated in Lithuania, and another 1,155 are currently under renovation now. Considering the renovated apartment buildings, this would constitute 15.7% of all apartment buildings in Lithuania that do not meet the energy efficiency requirements. In my opinion, the topic of my chosen work, Assessment of the implementation of fire safety requirements in renovated buildings, is relevant in order to ensure fire safety in such objects. Renovation sites become partly construction sites, into which buildings that are also operated fall, which causes additional risks. Such a concept as renovation is practically not distinguished in any documents regulating fire safety. Therefore, in my work, I want to review those documents that, in one way or another, regulate the work and procedures performed during the renovation process. The work reviews the risks and factors affecting fire safety, measures and practices to ensure safety. The situation, the experience of Lithuania and foreign countries in carrying out renovation processes, is briefly presented. The second part of the work examines a renovated medical building, in which the purpose is also changed. Existing and newly selected fire safety solutions and their implementation are discussed. The implementation of fire safety during the work is assessed. Theoretical fire modeling is performed. At the end of the work, conclusions and proposals are presented, and the identified shortcomings are reviewed.

Nagrin臈jama gaisro d奴m懦 拧alinimo sistem懦, 寞rengiam懦 po啪emin臈se automobili懦 stov臈jimo aik拧tel臈se, projektavimo problema. Problema i拧rei拧kiama alternatyvi懦, skirting懦 r奴拧i懦 sistem懦 palyginimo ir priimtiniausios sistemos pasirinkimo u啪daviniu. Matematiniu po啪i奴riu problema formuluojama kaip daugiakriteris sprendim懦 pri臈mimo (DKSP) u啪davinys. Skirting懦 r奴拧i懦 sistemos lyginamos tiek taikant ekonominius DKSP kriterijus, tiek kriterijus, i拧rei拧kian膷ius pavoj懦 啪mon臈ms, kuriuos gali paveikti gaisras po啪emin臈je stov臈jimo aik拧t臈je. Pastarieji kriterijai vadinami saugos kriterijais ir jais i拧re拧kiamas bei lyginamas sistem懦 efektyvumas. Parodoma, kad pasi奴lytai DKSP proced奴rai 寞gyvendinti b奴tina modeliuoti gaisr膮 ir evakuacij膮 po啪emin臈se automobili懦 stov臈jimo aik拧tel臈se. Alternatyvioms d奴m懦 拧alinimo sistemoms lyginti taikomas DKSP metodas TOPSIS. Teigiama, kad d奴m懦 拧alinimo sistem懦 priimtinumas ekonominiu ir saugos po啪i奴riu yra galimas tik nagrin臈jant konkre膷i膮 po啪emin臈s stov臈jimo aik拧tel臈s projektavimo situacij膮. Visiems projektavimo atvejams tinkamas sistem懦 rangavimas yra proble尘颈拧办补蝉 d臈l didelio skirtingus atvejus nusakan膷i懦 rodikli懦 skai膷iaus. Darbe pasi奴lyta proced奴ra skirta tobulinti d奴m懦 拧alinimo sistem懦 projektavim膮, formaliai 寞vertinant t懦 sistem懦 寞na拧膮 寞 gaisrin臋 saug膮.

The problem of designing fire smoke removal systems installed in underground car parks is considered. The problem is expressed as a problem of comparing alternative, different types of systems and selecting the most acceptable system. From a mathematical point of view, the problem is formulated as a multi-criteria decision-making (MCDM) problem. Different types of systems are compared using both economic MCDM criteria and criteria expressing the danger to people who may be affected by a fire in an underground car park. The latter criteria are called safety criteria and are used to express and compare the efficiency of the systems. It is shown that the implementation of the proposed MCDM procedure requires modelling of fire and evacuation in underground car parks. The MCDM method TOPSIS is used to compare alternative smoke removal systems. It is stated that the acceptability of smoke removal systems from an economic and safety point of view is possible only by analysing a specific underground car park design situation. Ranking systems that are suitable for all design cases is problematic due to the large number of indicators defining different cases. The procedure proposed in the work is intended to improve the design of smoke removal systems by formally assessing the contribution of those systems to fire safety.

Baigiamajame darbe vertinama, kok寞 pavoj懦 mi拧ko pakra拧膷io gaisrai kelia pramon臈s infrastrukt奴ros objektams, ypa膷 didel臈s talpos atmosferin臈ms naftos ir jos produkt懦 talpykloms. Apra拧omas praeityje vykusi懦 gamtos gaisr懦 poveikis naftos pramon臈s objektams. Apib奴dinami SEVESO III direktyvos reguliuojami Lietuvos naftos pramon臈s objektai ir du stamb奴s transporto mazgai, esantys arti mi拧k懦 masyv懦. Apra拧omos atmosferini懦 naftos produkt懦 talpykl懦 valdymo ir saugos u啪tikrinimo sistemos bei t懦 talpykl懦 komponentai, kuriuos gali pa啪eisti mi拧k懦 pakra拧膷io gaisrai. Pateikiama matematin臈 proced奴ra mi拧ko pakra拧膷io gaisro poveikiui naftos produkt懦 talpyklai vertinti. Pasi奴lytoji proced奴ra pritaikoma nagrin臈jant stambios Lietuvos naftos produkt懦 寞mon臈s terminalo talpyklas, esan膷ias ties pu拧懦 mi拧ko pakra拧膷iu.

The final thesis assesses the risk of forest edge fires to industrial infrastructure facilities, especially large-capacity atmospheric tanks of oil and its products. The impact of past natural fires on oil industry facilities is described. Lithuanian oil industry facilities regulated by the SEVESO III Directive and two large transport hubs located close to forests are described. The systems for control and safety ensuring of atmospheric oil product tanks and the components of those tanks that may be damaged by forest edge fires are described. A mathematical procedure is presented for assessing the impact of forest edge fires on oil product tanks. The proposed procedure is applied to analyzing tanks in the terminal of a large Lithuanian oil products company located at the edge of a pine forest.

Baigiamajame darbe nagrin臈jami evakuaciniai laiptai, teis臈s aktai. Darbe taip pat apra拧omi u啪sienio 拧ali懦 norminiai dokumentai, reglamentuojantys evakuacini懦 laipt懦 plot寞. Darbo tiriamojoje dalyje naudojant Pathfinder evakuacijos modeliavimo program膮 nagrin臈jama pastato esan膷io Vytauto g. 23, Bir啪ai visi拧kos evakuacijos i拧 pastato laikas, vertinama laipt懦 plo膷io 寞taka evakuacijai kei膷iant evakuacini懦 laipt懦 laiptatakio plot寞. Darb膮 sudaro 5 dalys: 寞vadas, 3 pagrindiniai skyriai, i拧vados, literat奴ros s膮ra拧as ir priedai. Darbo apimtis 鈥� 55p. teksto be pried懦, 3 iliustracijos., 4 lentel臈s., 50 拧altini懦., 7 priedai.

This final thesis examines evacuation staircases and relevant legislation. The work also describes regulatory documents from foreign countries governing the width of evacuation staircases. In the research part of the thesis, using the Pathfinder evacuation simulation software, the total evacuation time from the building at Vytauto St. 23, Birzai is analysed, and the influence of staircase width on evacuation is evaluated by varying the staircase width. The thesis consists of five parts: an introduction, three main chapters, a conclusions, a list of references, and appendices. The total volume of the thesis is 55 pages of text (excluding appendices), 3 illustrations, 4 tables, 50 sources, and 7 appendices.

Baigiamajame magistro darbe tiriamas granuliuoto putstiklio panaudojimas gipso kompozituose. Darbo tikslas 鈥� sukurti modifikuot膮 gipso kartonini懦 plok拧膷i懦 拧erd寞 naudojant putstiklio granules kaip lengv膮j寞 u啪pild膮. Literat奴ros ap啪valgoje aptariamos gipso kartonin臈s plok拧t臈s, lengvieji u啪pildai ir granuliuoto putstiklio technin臈s charakteristikos ir panaudojimo galimyb臈s statybiniuose kompozituose. Eksperimentin臈je dalyje pagaminti gipso bandiniai su skirtingais putstiklio granuli懦 kiekiais ir atlikti ri拧imosi trukm臈s, vizualinio mi拧inio klampumo, tankio, lenkimo bei gniu啪dymo stiprio tyrimai. Taip pat atlikta bandini懦 l奴啪io viet懦 mikrostrukt奴ros analiz臈 mikroskopu. Tyrim懦 rezultatai parod臈, kad did臈jant putstiklio kiekiui ma啪臈ja bandini懦 tankis, ta膷iau kartu ma啪臈ja ir mechaninis stipris. Nustatyta stipri tankio tiesin臈 priklausomyb臈 nuo lenkimo ir gniu啪dymo stiprio. Tyrim懦 rezultatai parod臈, kad pasiekta tankio ir stiprio priklausomyb臈 buvo nepakankama 寞prast懦 gipso kartonini懦 plok拧膷i懦 拧erdies savyb臈ms pasiekti, tod臈l ateityje tikslinga naudoti didesn臈s frakcijos putstiklio granules arba taikyti kitoki膮 mi拧inio ruo拧imo technologij膮, leid啪ian膷i膮 寞 mi拧in寞 寞traukti daugiau oro ir efektyviau suma啪inti kompozito tank寞. Darb膮 sudaro: 寞vadas, literat奴ros ap啪valga, metodin臈 dalis, eksperimentin臈 dalis, i拧vados ir literat奴ros s膮ra拧as. Darbo apimtis 鈥� 58 p. teksto be pried懦, 29 iliustr., 6 lent., 48 bibliografiniai 拧altiniai. Atskirai pridedami 2 darbo priedai.

This final master鈥榮 thesis focuses on the use of granulated expanded glass in gypsum composites. The aim of the thesis is to develop an innovative core for plasterboards using expanded glass granules as a lightweight filler. The literature review discusses plasterbords, lightweight fillers, and the technical characteristics and potential applications of granulated glass in construction composites. In the experimental section, gypsum specimens with varying amounts of expanded glass granules were produced, and tests were conducted on setting time, visual consistency, density, flexural strength and compressive strength. A microstructural analysis of the fracture surfaces of the specimens was also performed using a microscope. The results of the studies showed that as the amount of expanded glass increases, the density of the specimens decreases, but mechanical strength also decreases. A strong linear dependence of density on flexural and compressive strength was established. The test results showed that the achieved relationship between density and strength was insufficient to meet the core properties of standard plasterbords; therefore, in the future, it would be advisable to use expanded glass granules of a larger fraction or to apply a different mixing technology that allows for the incorporation of more air into the mixture and a more effective reduction in the composite鈥檚 density. The thesis consists of: an introduction, literature review, methodological part, experimental part, conclusions, and references. The volume of the thesis is 58 pages of text excluding appendices, 29 figures, 6 tables, and 48 bibliographic sources. Additionally, 2 appendices are attached separately.

Nagrin臈jama auk拧tos temperat奴ros, technologinio proceso ir aplinkos s膮lyg懦 poveikio plienin臈ms pastato konstrukcijoms, apsaugotoms prie拧gaisrin臈mis dangomis, problema. D臈mesys sutelkiamas 寞 pasyvi膮sias prie拧gaisrines dangas, eksploatuojamas skirtingose, da啪nai agresyviose aplinkos s膮lygose, ir j懦 atsparumo ugniai savybi懦 kitim膮. Prie拧gaisrini懦 dang懦 veiksmingumo vertinimas apima teorin臋 plienini懦 konstrukcij懦 elgsenos gaisro metu analiz臋, taikom懦 apsaugos priemoni懦 klasifikavim膮 bei bandym懦 rezultat懦 寞vertinim膮. Tyrime nagrin臈jamos skirtingos i拧sipu膷ian膷iomis dangos, su papildoma apsauga nuo aplinkos poveiki懦 ir be. Atsparumo ugniai vertinimas atliekamas standartiniais bandymais temperat奴ra keliama pagal standarte LST ISO 834:1997 nurodyt膮 kreiv臋. Analizuojami bandini懦 b奴kl臈s poky膷iai po ilgalaikio poveikio gamybin臈je aplinkoje, t.y. j懦 dangos pa啪eidimai. Tyrimo rezultatai skirti pagr寞sti racional懦 prie拧gaisrini懦 dang懦 parinkim膮 ir j懦 eksploatavimo s膮lyg懦 vertinim膮 projektuojant plienines konstrukcijas.

The problem of the impact of high temperatures, technological processes, and environmental conditions on steel building structures protected by fireproof coatings is examined. The focus is on passive fire protection coatings used in different, often aggressive environmental conditions, and changes in their fire resistance properties. The assessment of the effectiveness of fire protection coatings includes a theoretical analysis of the behavior of steel structures during a fire, a classification of the protective measures used, and an evaluation of the test results. The study examines different intumescent coatings, with and without additional protection against environmental influences. Fire resistance is assessed by standard tests, with the temperature raised according to the curve specified in standard LST ISO 834:1997. Changes in the condition of the samples after long-term exposure in a production environment, i.e., damage to their coatings, are analyzed. The results of the study are intended to justify the rational selection of fire-resistant coatings and the assessment of their operating conditions when designing steel structures.