2012年12月20日星期四

Fireproof coatings use of countermeasures

The countermeasures problems in the use of fireproof coatings
(A) to strengthen publicity and education to enhance their understanding. Steel structure engineering fire hazard causes are many, but a very important reason for thinking and understanding is steel structurenot in place, contempt fire prevention of the illegal construction of luck.The fire department should make use of newspapers, radio, flyers, and other forms of extensive publicity on fire prevention, organizational design, construction units, the training of fire codes and laws and regulations to improve the level of business theory and law enforcement abiding sense of design, construction personnel. Conditional can also take advantage of the actual case of fire, visits to the scene of the fire; take advantage of the news media and public disclosure of fire losses and casualties; convened fire responsibility to publicly address the General Assembly, so deeply rooted awareness of fire safety in the entire society everyone. 

(B) the correct selection of a variety of fire-resistant coating. A wide variety of fire retardant coatings market, its fire performance are not the same. Therefore, must be full investigation of the role of fire retardant paint varieties grasp its performance, and in accordance with the substrate coating normal use conditions and fire environmental conditions, such as the right choice varieties of fire-resistant coating. Thin, ultra-thin or thick fire retardant paints can not be indiscriminately on for all steel structure fire protection, must be in accordance with the building fire risk, environmental conditions, production technology, value protection aspects to be taken into account, truly fireproof paint fire performance.
(C) strengthen the supervision and management, good production and sales shut. Fire resistance and physical and chemical properties of test report products sold must be qualified by the national testing organizations in order to sell the factory, and shall be accompanied by the manual, indicating the technical steel structureperformance, manufacturing batch number, storage period, the scope of application. Fire supervision departments respond to each batch of fire-resistant coating to the factory quality sampling and testing its packaging, labels, indicating compliance with the requirements. All operating units of the fire retardant coating, purchase required to contact the manufacturer for product brochures and other information provided to the user in the sales brochures and other information, and the implementation of the operating systems listed, marked with the manufacturer of the product, technical performance, product testing organizations, the scope content. The fire supervision departments should track supervision, regular or irregular spot checks of product quality, mastery of the marketing staff expertise and after-sales service. Violation of the provisions of the production of substandard products, endangering public safety by or unlicensed, unlicensed operators, according to the law strictly, sales of fake and shoddy products, in conjunction with the industry and commerce, quality supervision and other relevant departments to resolutely crack down on the majority of maintenance users and the interests of the masses. 

(D) to strengthen the supervision of the construction site, testing organizations. Book issued an audit opinion, the fire department should expressly require the the fireproof coating construction unit shall have the appropriate the construction qualification to undertake the project, at the same time to track the construction site supervision services. Such as before brush fire retardant coating, require the construction unit first surface rust and rust treatment is determined according to the requirement, the steel surface debris should be cleaned and the gap junction applications of fire retardant paint or other fireproof material to fill the blocking level before construction. Should maintain good ventilation, rainy days or when the surface of the steel members condensation, unfit for the job. Because of the rapid construction of fire-resistant coating, strengthen the supervision and inspection of the construction site, it is extremely important. Check through the construction site, you can master the basic situation of the construction team and the progress of the project, the quality is good or bad, whether the product is qualified. Also only field inspection and supervision, to discover hidden promptly rectification hidden to avoid unnecessary losses. In addition, to strengthen the detection units of firefighting agency management efforts, and correctly guide industry self-awareness, strict testing specifications and requirements, to give the corresponding penalties for a false report or larger error detection unit, until the abolition of their qualifications.
(E) strict acceptance criteria to ensure that the quality of the project. Fire department in the construction unit to apply for acceptance requirements before the first request to provide intermediary testing organizations test report and construction records, including the records of the hidden works, at the same time the fire department in the site acceptance process to grasp the following requirements of the classification and acceptance: The coated thin fireproof coatings to comply with the following requirements: 1 between the coating and the steel substrate and coating firmly bonded between, such as delamination, hollowing; 2, coating thickness to meet fire resistance design requirements; 3, the appearance of the coating to be smooth, clear contours, color uniformity, no obvious depression, chalking, loose laitance, mastoid have been removedsteel structure from any individual cracks, its width should not be greater than 0.5mm. Thick coating fireproof coatings to meet the following requirements: 1, between the coating and the steel substrate and coating bonded firmly and completely closed, such as delamination, hollowing; 2, coating thickness of 80 area% (inclusive) to meet the design requirements for fire resistance, and the thickness of the thinnest should not be less than 85% of the design thickness; 3, the appearance of the coating should be smooth, without significant depression, chalking, loose laitance , have been removed from any individual cracks mastoid, its width should not be greater than 1mm. Acceptance When you encounter one of the following circumstances, should check whether its coating steel components connected to steel mesh, to ensure a solid coating: 1, withstand shock and vibration beam; 2, the design coating thickness is greater than when 40mm; 3, sticky lacquer strength is less than a coating of 0.05Mpa; 4, the web height of the beam greater than 1.5m.

New technology for steel the high corrosion coating rust


http://steelprofileexport.blogspot.com/2012/12/new-technology-for-steel-high-corrosion.html

没有评论:

发表评论