Недостатки типового проектирования автоматических установок пожаротушения. Часть 2. Проектный пожар и безопасность применения

2020 ◽  
Author(s):  
Nikolay Smirnov ◽  
Victoria Grishakina ◽  
Galiya Sitdekova
Keyword(s):  
Highly Qualified ◽  
Design Fire ◽  
Development Scenarios ◽  
Fire Extinguishing ◽  
Reasonable Choice ◽  
Typical Design ◽  
Maximum Design ◽  
Freon 114B2

Критерий «максимальный проектный пожар» может использоваться для обоснования эффективности автоматической установки пожаротушения (АУП). Он выбирается из анализа сценариев и динамики развития пожара, представляет собой пожар, наиболее сложный для пожаротушения с помощью АУП. Безопасность огнетушащих газов зависит от их свойств. СО и хладон 114В2 являются наиболее опасными огнетушащими газами. Типовое проектирование АУП не учитывает специфические особенности объектов защиты. Обоснованный выбор АУП должен осуществлять только высококвалифицированный специалист, прошедший соответствующее обучение.The criterion «maximum design fire» is used to justify the effectiveness of automatic fire extinguishing installation (AUP). It is based on the analysis of fire development scenarios and found the most difficult fire for fire-extinguishing with AUP. The safety of extinguishing gases depends on their properties. CO and freon 114B2 are the most dangerous fire extinguishing gases. Typical design of AUP does not take into account the specific features of objects of protection. Reasonable choice of AUP should be made only by a highly qualified specialist after the appropriate training.

The wave algorithm used to determine the optimal indoor route for smoke divers in case of fire and fumigation

2021 ◽  
Vol 30 (3) ◽  
pp. 31-40
Author(s):  
E. V. Stepanov ◽  
D V. Tarakanov ◽  
N. G. Topolskiy
Keyword(s):  
Work Performance ◽  
Software Tool ◽  
Point Of Entry ◽  
Fire Extinguishing ◽  
Moore Neighborhood ◽  
Reasonable Choice ◽  
Remote Monitoring Systems ◽  
Fire Spreading ◽  
Theoretical Foundations ◽  
Fire Origin

Introduction. One of the main objectives, pursued by the information analysis support extended to smoke divers, is the preparation of indoor routes. Technical capabilities, represented by advanced remote monitoring systems, provide a fire extinguishing manager with the necessary information about the point of fire origin and mathematical tools allow to predict fire spreading characteristics. The goal of this work is to develop an algorithm for the preparation of an optimal indoor route for smoke divers to support management decisions in the event of fire. To achieve this goal, it is necessary to develop the theoretical framework and implement it in a software programme.Theoretical foundations. The theory of cellular automata is employed in this paper to simulate the routes of smoke divers inside a building. A cellular automaton with a Moore neighborhood is applied. We use differential equations, similar to the Kolmogorov equations, to monitor the fire parameters.Results and discussions. A modified wave algorithm was developed to determine the optimal indoor route. The software tool was applied to simulate the route of gas divers. Coefficients of importance were applied in the process of mathematical modeling; they took account of the prioritized work to be performed by smoke divers.Conclusions. The results of the study suggest that the algorithm allows to identify the optimal itinerary, thereby enabling the decision maker, responsible for sending teams of smoke divers to the work performance location, to make a reasonable choice of the point of entry for the personnel and machinery, as well as their itinerary inside the building.

Design and Realization of the Mobile Robot with Caterpillar Double Accused for Extinguishing

2012 ◽  
Vol 184-185 ◽  
pp. 1542-1545
Author(s):  
Ying Xu ◽  
Lei Yuan ◽  
Jin Tan Duan
Keyword(s):  
Mobile Robot ◽  
Structure Design ◽  
Control Mode ◽  
Control System Design ◽  
Technology Research ◽  
Connecting Rod ◽  
Operation Analysis ◽  
Design Fire ◽  
Fire Extinguishing ◽  
Cross Country

In this paper, two kinds modes of the mobile robot made fire caterpillar method are presented, manual control and automatic control,can this not only make it have the performance of the movement in cross-country, but also realize the early warning and effective extinguishing the fire by carrying the flame using sensors and connecting rod type fire extinguishing actuators.This paper introduce the robot structure design, fire extinguishing actuators, control system design, operation analysis and the realization of two-way control mode , provide the reference for minitype ground mobile robot and the related technology research.

scholarly journals Evaluation of Design Fire Curves for Single Combustibles in a Cinema Complex

2020 ◽  
Vol 34 (3) ◽  
pp. 18-27 ◽  
Author(s):  
Hyo-Yeon Jang ◽  
Cheol-Hong Hwang ◽  
Chang Bo Oh ◽  
Dong-Gun Nam
Keyword(s):  
Growth Rate ◽  
Fire Growth ◽  
Two Stage ◽  
Maximum Heat ◽  
Design Fire ◽  
Fire Extinguishing ◽  
Maximum Heat Release ◽  
Actual Fire ◽  
Fire Curve ◽  
General Method

An actual fire test was performed on single combustibles placed in a local cinema complex, and quantitative differences in the maximum heat release rate (HRR) and fire growth rate were investigated based on the design fire curve methods (i.e., the general and 2-stage methods). In terms of combustible use and fire load, a total of 12 combustibles were selected, classified into cinema lounge and movie theater. It was found that the maximum HRR and fire growth rate determined using the two-stage method were quantitatively different from those of the general method. The application of the two-stage method, which can be used to determine the fire growth rate of the initial fire stage more precisely, could be useful in accurately predicting the activation time of fire detectors and fire-extinguishing facilities, as well as the available safe egress time (ASET) and required safe egress time (RSET).

No Radiotherapy a Reasonable Choice Over Age 70

Ob Gyn News ◽  
2007 ◽  
Vol 42 (2) ◽  
pp. 7
Author(s):  
BRUCE JANCIN
Keyword(s):  
Reasonable Choice

The effects of face attractiveness onpre-selective recruitment

2002 ◽  
Vol 61 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Pascal Pansu ◽  
Michel Dubois
Keyword(s):  
Facial Attractiveness ◽  
Highly Qualified ◽  
Relational Skills

The aim of this study was to determine how facial attractiveness of applicants influences pre-selective evaluation in two different occupational fields (one relational and one non-relational). A total of 224 participants (working individuals and students) were asked to judge a fictitious applicant based on a resumé (applicant’s qualifications: highly vs. less qualified) and a photograph (attractive vs. unattractive). Overall, the results showed that facial-attractiveness effects on interpersonal judgments are not absolute, and that their occurrence partly depends on the situation in which the judgments are made. Regardless of occupational field, when the applicants were highly qualified (whether attractive or unattractive) they were systematically judged positively, whereas in the case of less qualified applicants, facial attractiveness differentially affected judgments in the two occupational fields: less-qualified but attractive applicants were only judged more favorably than less-qualified and unattractive ones when the job involved relational skills.

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