Study on the characteristics of the new type of plastic water glass gel fire prevention and fire extinguishing material

2021 ◽  
Author(s):  
Haizhou Song ◽  
Wei Lu ◽  
Wei Fu ◽  
Jiliang Li ◽  
Zaixin Su ◽  
...  
Keyword(s):  
Water Glass ◽  
Fire Prevention ◽  
Fire Extinguishing ◽  
New Type

scholarly journals Fabrication of microcapsule extinguishing agent with core-shell structure for lithium-ions battery fire safety

2021 ◽  
Author(s):  
Weixin Zhang ◽  
Lin Wu ◽  
Dujin Qiao ◽  
Jie Tian ◽  
Yan Li ◽  
...  
Keyword(s):  
Large Scale ◽  
Urea Formaldehyde ◽  
Lithium Ion ◽  
Formaldehyde Resin ◽  
Shell Material ◽  
Lithium Ions ◽  
Safety Issues ◽  
Fire Extinguishing ◽  
New Type ◽  
Core Shell Structure

Safety issues limit the large-scale application of lithium-ion batteries. In this work, a new type of N-H-microcapsule fire extinguishing agent is prepared by using melamine-urea-formaldehyde resin as shell material, perfluoro(2-methyl-3-pentanone)...

scholarly journals Analysis of the Problems and Safety Measures of Magnesium Fires

2020 ◽  
Vol 20 (2) ◽  
pp. 95-104
Author(s):  
Euipyeong Lee
Keyword(s):  
Research And Development ◽  
Safety Management ◽  
Case Analysis ◽  
Fire Fighting ◽  
Fire Prevention ◽  
Safety Measures ◽  
Fire Extinguishing

The problems and safety measures for magnesium fires were analyzed based on the fire case analysis in this study. The following problems were analyzed: ① the fire occurs in areas where there is no regulation under the Hazardous Goods Safety Management Act, ② the lack of safety measures during the firefighting of magnesium fires, ③ absence of adaptive fire fighting agents or equipment, ④ absence of suitable fire fighting tactics. For safety measures, the following were analyzed: ① enactment of magnesium fire guidelines, ② the education and publicity regarding fire prevention and countermeasures by fire organizations, ③ the obligation to have appropriate fire extinguishing agents in the places where magnesium is stored and handled, ④ the development of suppression equipment and fire fighting tactics, and ⑤ the research and development of fire extinguishing agents.

Research on Adaptability of Slag-Based Geopolymer with Superplasticizer

2009 ◽  
Vol 405-406 ◽  
pp. 129-134 ◽  
Author(s):  
Qing Wang ◽  
Lin Li ◽  
Chang Peng Wu ◽  
Zhi Tong Sui
Keyword(s):  
Water Glass ◽  
Raw Materials ◽  
Cementitious Material ◽  
Evaluation Standard ◽  
Optimum Content ◽  
New Type ◽  
Geopolymer Paste

Using slag and metakaoline as raw materials , different modules of water glass as activator ,a new type of cementitious material—slag-based geopolymer was prepared. The fluidity of slag-based geopolymer paste and optimum content of superplasticizer in slag-based geopolymer mortar being as evaluation standard, adaptablities of slag-based geopolymer to naphthalene superplasticizer and melamine superplasticizer were studied. The results have shown that both naphthalene superplasticizer and melamine superplasticizer with slag-based geopolymer were adaptable well, obvious saturated points and optimum contents to two kinds of superplasticizers were performed.

scholarly journals ASSESSMENT OF FIREFIGHTING EFFICIENCY OF VEGETATION FIRES IN CURITIBA-PARANÁ

FLORESTA ◽  
2021 ◽  
Vol 51 (4) ◽  
pp. 900
Author(s):  
Heitor Renan Ferreira ◽  
Antonio Carlos Batista ◽  
Alexandre França Tetto
Keyword(s):  
Soil Fauna ◽  
Water Storage ◽  
Fire Department ◽  
Fire Prevention ◽  
Minimum Volume ◽  
Burnt Area ◽  
Fire Extinguishing ◽  
Vegetation Fires ◽  
The Mean ◽  
The Military

Vegetation fires, when not controlled, cause economic disruption, temporary loss of vegetation, and damage to soil, fauna and health. To improve the process of fire prevention and firefighting, it is necessary to evaluate the performance of the involved agents. The objective of this study was to evaluate the firefighting efficiency of vegetation fires in the municipality of Curitiba, Paraná, from 2011 to 2015, using records from the Fire Department of the Military Police of Paraná. Once the consistency of the fire records was verified, they were classified and information was gathered regarding the extent of burnt area, time of first attack, combat time, main fire-extinguishing methods used, and amount of water used. The results indicate that 88% of the records registered a burnt area inferior or equal to four hectares. In addition, the mean burnt area was of 2,399.21 m², the mean attack time was of 14.1 minutes, and the mean combat time was of 29.9 minutes, all lower than the ones presented by studies from different locations. As for the fire-extinguishing methods, it was verified that smothering equipment and water were used in 66.4 and 60.6% of the records, respectively. The mean amount of water used was of 1,186.56 liters per fire, indicating a minimum volume necessary for water storage containers for firefighting in the study area. Based on the results, we concluded that the firefighting of vegetation fires in Curitiba is efficient.

Strength Enhancement of Sludge Based Geopolymer by Si/Al Ratio Variation

2012 ◽  
Vol 610-613 ◽  
pp. 518-521
Author(s):  
Z.X. Yang ◽  
J.M. Zhao ◽  
Kyu Hong Hwang ◽  
S.J. Shin ◽  
H.R. Lee
Keyword(s):  
Mechanical Properties ◽  
Compressive Strength ◽  
Water Glass ◽  
Bending Strength ◽  
Construction Material ◽  
Strength Enhancement ◽  
Optimal Value ◽  
New Type ◽  
Alkaline Activator ◽  
Main Components

To obtain a new type of construction material with lower CO2emission and energy consumption, fly ash was used as the main components. Solution of NaOH/KOH and water glass were applied as alkaline activator. The amount of water glass and the ratio of alkaline/water glass were varied to adjust Si/Al ratio to reach an optimal value. The specimens were cured in air and oven, then their mechanical properties such as compressive strength and bending strength were measured and their microstructures were investigated.

MODELS AND METHODS FOR RISK ANALYSIS OF FIRE-DANGEROUS SITUATIONS AT NUCLEAR POWER PLANTS

2018 ◽  
pp. 97-100
Author(s):  
S. N. Goncharenko ◽  
I. V. Yaroshhuk
Keyword(s):  
Risk Analysis ◽  
Nuclear Power ◽  
Power Plants ◽  
Statistical Study ◽  
Heat Removal ◽  
Fire Prevention ◽  
Prevention Measures ◽  
Fire Extinguishing ◽  
The Russian Federation ◽  
Safety Characteristic

The paper presents the review models, methods and approaches to the formalized analysis of data in the fire extinguishing systems and safety characteristic for difficult, explosive and fire-dangerous management objects. A statistical study of temperatures in the system of passive heat removal from the reactor was carried out using a set of approaches and parallel processing tools for specifically structured large amounts of data. A method for calculating, analyzing and monitoring the risk of a fire-hazardous situation in the passive loop of a reactor is proposed. A subsystem for predicting the occurrence of flammable situations has been developed based on methods, models and algorithms of risk analysis, which has the ability to generate management decisions in the form of a complex of fire prevention measures implemented in accordance with the requirements of regulatory and technical documents valid in the Russian Federation.

scholarly journals A Study on the Application of Hydraulic Calculations considering the Corrosion Coefficient of Steel Piping for Fire Protection

2020 ◽  
Vol 34 (4) ◽  
pp. 69-77
Author(s):  
Chul-Hwan Mun ◽  
Ho-Jung Kang ◽  
Jae-Wook Choi
Keyword(s):  
Stainless Steel ◽  
Fire Prevention ◽  
Steel Pipes ◽  
Fire Extinguishing ◽  
Water Based ◽  
Pressure Pipeline ◽  
C Value ◽  
Materials Used ◽  
In Fire ◽  
Corrosion Coefficient

With the recent enlargement and complication of buildings, damage caused by the incidents of fires breaking out are escalating. Consequently, the use of sprinkler facilities is increasing among water-based fire extinguishing systems. Piping materials used in fire prevention systems include carbon steel (for general or pressure pipeline), CPVC, copper, and stainless-steel. Among these, the steel and CPVC pipes, which are commonly employed in fire prevention, were considered for testing the reliability of the water-based systems. This analysis was performed using the PIPENET software to perform hydraulic calculations in order to examine the flow and pressure at the terminal head when the corrosion coefficient was applied; this coefficient was applied considering the aging of pipes. Assuming a uniform pipe diameter in the steel pipes, the rated flow in the pump installed on the first floor of the basement was reduced by over 10% after 20 years had passed (C value of 90); moreover, the reduction in pressure and flow at its terminal head exceeded 30% and 16.5%, respectively. The results indicate that it is difficult to ensure the reliability of these fire prevention facilities. Furthermore, according to our estimation, considering 30 years had passed (C value of 80), the rated flow of the pump was reduced by over 15%, and the corresponding reduction in pressure and flow at its terminal head exceeded 42% and 24%, respectively.

Characterisation and coagulation performance of polysilicate–ferric–zinc

2015 ◽  
Vol 69 (6) ◽  
Author(s):  
Xia Xu ◽  
Rong-Yan Shen ◽  
Yu-Ting Liang ◽  
Shui-Li Yu ◽  
Li-Ping Wang
Keyword(s):  
Water Glass ◽  
Molar Ratios ◽  
Industrial Grade ◽  
Coagulation Performance ◽  
New Type

AbstractA new type of coagulant, polysilicate-ferric-zinc (PSFZn) with different Fe/Zn molar ratios, was synthesised using water glass (industrial grade, w(SiO

scholarly journals An Improved Composite Fly Ash Gel to Extinguish Underground Coal Fire in Close Distance Coal Seams: A Case Study

2020 ◽  
Vol 2020 ◽  
pp. 1-11 ◽  
Author(s):  
Jun Guo ◽  
Guobin Cai ◽  
Yan Jin ◽  
Xuezhao Zheng ◽  
Yin Liu
Keyword(s):  
Fly Ash ◽  
Cost Effective ◽  
Solid Material ◽  
Superior Performance ◽  
Gelling Agent ◽  
Fire Prevention ◽  
Fire Control ◽  
Long Distance ◽  
Coal Fire ◽  
Fire Extinguishing

Fire extinguishing with the superior performance of fly ash composite colloid material is a cost-effective colloid fire prevention technology. In this paper, a new powder additive (suspending agent (XK-XJ) and gelling agent) was developed for the existing fire extinguishing technology of fly ash compound colloid. Tests show that the best additions to the fly ash slurry were 0.3% and 0.1∼0.3%, respectively. The grouting technical scheme of adding a suspending agent on the ground and gelling agent downhole was proposed to solve the problems of solid material settlement and blockage in the long-distance pipeline transportation process. Finally, the optimized fly ash colloid fire prevention and extinguishing technology was successfully applied to the fire control engineering examples of close-range coal seam groups, and the rationality of the developed powder and its proportion was tested, and the feasibility in coal fire control was tested.

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