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・ Circuit des Ardennes (cycling)
・ Circuit des Champs de Bataille
・ Circuit des Nations
・ Circuit des Remparts
・ Circuit design
・ Circuit design language
・ Circuit diagram
・ Circuit du Mas du Clos
・ Circuit du Val de Vienne
・ Circuit emulation service
・ Circuit extraction
・ Circuit Gilles Villeneuve
・ Circuit ICAR
・ Circuit ID
・ Circuit identification code
Circuit integrity
・ Circuit International Automobile Moulay El Hassan
・ Circuit judge
・ Circuit judge (England and Wales)
・ Circuit Jules Tacheny Mettet
・ Circuit Makati
・ Circuit Media
・ Circuit Merit
・ Circuit minimization for Boolean functions
・ Circuit Mont-Tremblant
・ Circuit no Ōkami
・ Circuit noise level
・ Circuit of culture
・ Circuit of Ireland Rally
・ Circuit of the Americas


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Circuit integrity : ウィキペディア英語版
Circuit integrity


Circuit integrity refers to the operability of electrical circuits during a fire. It is a form of fire-resistance rating. Circuit integrity is achieved via passive fire protection means, which are subject to stringent listing and approval use and compliance.
==Fireproofing==

Providing fireproofing for cables, cable trays, or electrical conduit, is meant to keep cables operational during a specified fire exposure and time. This can be done in two different ways:
* Cable coating is generally considered a fire retardant, which lowers the spread of flame and generation of smoke along the combustible cable jacketing. Some cable coating systems are able to achieve a measure of circuit integrity, which is demonstrated and quantified through certification listing and listing and approval use and compliance.
* An enclosure can be provided. Calcium silicate board can be used, or other methods including boards made of vermiculite, bonded and pressed with sodium silicate, flexible wraps made of ceramic fibre and rockwool, or ceramic fibre wraps treated with endothermic materials. In all cases, the installed configuration must meet the certification listing of the tested system. Alternatively, cables that achieve fire-resistance ratings on their own can be used, such as Mineral-insulated copper-clad cable, or MI cable. Mica insulated cables have also demonstrated a measure of circuit integrity for small cables.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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