Views: 55 Author: Site Editor Publish Time: 2021-11-25 Origin: Site
First, the current national standards, such as "Architectural Design Fire Code", "High-rise Civil Building Design Fire Code", "People's Air Defense Engineering Design Fire Code" and other codes are only some principle provisions, can not well guide the design, construction and fire supervision work.
Second, for no natural lighting or poor lighting conditions in the stairwell and walkways and other places, because there is no light source or because of the normal light source illumination is low, light storage is difficult to ensure. Third, the light storage type self-luminous evacuation signs have the disadvantage of poor light penetration, in the fire smoke is thicker when the use of the effect is not good. Fourth, the production quality of some products is poor, the service life is not long, several times after the light storage and luminous, the effect is significantly reduced.
From the end of the 20th century to the beginning of the 21st century, the application of light storage type self-luminous evacuation signs gradually began to promote the birth and application of new technologies, but also revealed that the national norms, standards lagging behind. At the same time also raised the question of whether the product's enterprise monitoring standards meet the requirements of national standards?
Is the measurement method and index of evacuation indication illumination different from the light evacuation indication sign? Whether the applicable place can be equivalent to the light evacuation signs and so on, to the design and construction have brought confusion. Many provinces and municipalities have issued documents to promote the light storage type self-luminous evacuation signs, some provinces and municipalities to develop the corresponding local standards, and some designers refer to Germany, Japan and other foreign standards.
In the field of light storage type self-luminous evacuation signs has not formed a set of perfect technical standard system. Therefore, as soon as possible to develop and improve the relevant national norms, standards is a matter of urgency, so that the light storage type self-luminous evacuation signs design and construction can be based on, but also to facilitate fire supervision and inspection can be carried out correctly.
In addition, according to the technical performance of the product, the development of the corresponding design, construction standards, can not simply refer to the design of electro-luminescent evacuation signs, construction standards.
Clearly light storage type self-luminous evacuation signs set place and requirements, to avoid blind promotion.
At present, some construction projects on the light storage type self-luminous evacuation signs and electric light source type evacuation signs without distinction, completely alternative use, and even some engineering design, construction will be the provinces and municipalities to promote the use of light storage type self-luminous evacuation signs file as the basis for design and construction. Due to the lack of understanding of product performance, in the design and construction of the project in a blind state, but also caused a certain amount of fire hazards.