91久久无人区码一码二码三码-精品国产美女福利在线不卡-亚洲18视频在线播放-国产成人91青青草原精品

banner
Your present position: Home >> Contact Us >>  News >> The world's first standard for scrapping elevator components has been introduced

The world's first standard for scrapping elevator components has been introduced

Number of Views: 1181 Date: 2022-03-30 02:08:11

The National Standards Committee held a media briefing on the 20th and released the national standard "Technical Conditions for Scrapping Main Components of Elevators". This standard was independently developed by China, and there is currently no relevant international standard available internationally. The standard specifies 13 technical conditions for the scrapping of major elevator components that have a significant impact on the safe operation of elevators, including safety protection devices, emergency rescue devices, shaft safety doors and flap doors, drive engines, cars, landing doors and car doors, and electrical control devices. This fills the gap in the lack of elevator scrapping standards in the domestic and international elevator industry for many years.


It is reported that there are currently 3.6 million elevators in use in China, of which over 80000 have been in use for more than 15 years. The safety risks of old elevators have attracted widespread attention. Due to various factors such as design, manufacturing, installation, maintenance, and use, there are significant differences in the service life of elevator systems, making it difficult to establish a standard for determining the scrap of elevator systems. By scrapping the main components that have the risk of failure or potential failure, the upgrading and renovation of the entire elevator system can be promoted, which is beneficial for improving the operational safety and service life of elevator equipment.


The new standards also take into account public safety and resource conservation. Taking Shanghai as an example, there are currently over 20000 elevators with a service life of more than 15 years. If all elevators are scrapped based on a design life of 15 years, with an average cost of 400000 yuan per unit, it would require an investment of over 8 billion yuan. However, only scrapping and replacing components that do not meet safety performance requirements can continue to maintain safe operation of elevators. By replacing 20% of the components, it can save over 6.4 billion yuan in funds.


The new standard will officially come into effect on February 1st next year, accelerating the renovation and upgrading of in use elevators, especially old ones, to improve their safety performance. At the same time, the National Standards Committee will accelerate the development of the national standard "Technical Conditions for Scrapping Main Components of Escalators and Moving Walkways", improve the national standard system for scrapping elevator products, and continuously enhance the safe operation level of old elevators.


主站蜘蛛池模板: 日本人妻精品一区二区三区| 在线中文亚洲中文字幕| 亚洲AV国产国产久青草| 亚洲少妇人妻一区二区| 国产乱人伦中文无无码视频试看 | 日本高清久操人妻在线| 午夜av在线一区二区三区| 亚洲色无码?线精品观看| 国产三级无遮挡在线观看| 久久a级毛片免费观看| 玖玖玖视频在线观看视频6| fc2成年免费视频在线| 亚洲AV永久中文精品综合| 一区二区三区四区在线乱码| 欧洲老熟妇506070| 久久久无码精品亚洲电影| 免费永久看女裸体网站| 国产精品夜夜操黑丝袜美女| 国产打屁股调教在线播放97| 精品一区二区在线女教师| 日本女优的骚逼真肥操的真舒服| 久久久久琪琪去精品色无码| 国产精品久久久久久99.| 国产尤物视频在线播放| 精品一区二区三区四区96| 国产亚洲精品av久久| 亚洲一区二区三区女厕偷拍| av中文字幕乱码在线看| 91人妻人人做人碰人人蜜臀| 国产精品日本在线观看| 国产精品久久高潮呻吟声| 新91欧美在线精品亚洲| 在线天堂中文最新版网| 热re91久久精品国产99热| 麻豆精品国产粉嫩av| 日韩精品免费一区三区| 日本黄高清视频网站| 国产91丝袜在线18| 久精品久精品久久精品| 国产精品不卡在线视频| 精品午夜福利在线视在亚洲|