国产精品无码免费视频二三区,最近2019中文字幕在线,99精产国品一二三产品区别,chinese中年熟妇free

Is ATEX certification required for exporting explosion-proof products to the European Union?

ATEX is an explosion-proof directive certified by the EU CE, with the directive code 2014/34/EU and the certification standard EN60079, applicable to EU countries and regions. The ATEX directive is a mandatory directive, and explosion-proof equipment e

What are the classifications of explosion-proof certification?

Explosion proof certification is a product safety certification for use in explosive gas and dust environments. The measures taken by the product to achieve explosion protection involve many types of explosion protection. Common types include intrinsic

What is MA Certification? How can enterprises apply for MA certification?

Coal safety certification is a mandatory safety certification for equipment and products used underground in coal mines, which adopts a "product testing+factory inspection" approach, We need to conduct both testing of the applied product and

What is the difference between intrinsic safety certification and explosion-proof certification?

Explosion proof certification refers to a safety certification for equipment and products used in explosive hazardous areas. To meet the requirements of explosion-proof certification standards, certain measures must be taken to achieve it, which we call e

How to obtain explosion-proof certification for explosion-proof products?

At present, explosion-proof products are divided into mining and non mining types.The explosion-proof products used in coal mining sites require coal safety certification, which includes both explosion-proof performance testing and performance standard te

What is intrinsic safety certification?

Intrinsic safety certification refers to the explosion-proof certification of intrinsic safety. The following is a detailed introduction to intrinsic safety certification: The basic definition of intrinsic safety: Intrinsic safety refers to limi

防爆電氣3C認證實施細則

防爆電氣產(chǎn)品的3C認證，即中國強制認證（China Compulsory Certification），是保障消費者人身安全和國家安全、加強產(chǎn)品質(zhì)量管理的重要舉措。自2019年10月1日起，防爆電氣產(chǎn)品被納入CCC認證管理范圍，并于2020年10月1日起開始強制執(zhí)行。這一認證制度不僅要求產(chǎn)品必須符合特定的安全標(biāo)準，還涉……

如何解讀防爆認證標(biāo)志的含義？

解讀防爆認證標(biāo)志上的含義主要從以下幾個關(guān)鍵方面入手： 一、防爆型式 常見的如隔爆型用“d”表示，增安型用“e”表示，本質(zhì)安全型用“i”等。 不同的防爆型式意味著采用了不同的防爆技術(shù)手段來防止爆炸的發(fā)生。例如隔爆型是通過將可能產(chǎn)生火花或高溫的部件封裝在一個堅固的外殼內(nèi)，當(dāng)……

防爆認證|防爆電氣的基礎(chǔ)知識

防爆電氣是指在含有爆炸性物質(zhì)的環(huán)境中使用的電氣設(shè)備，通過采取相關(guān)的防爆措施的設(shè)計以防止電氣設(shè)備自身原因產(chǎn)生火花、電弧或高溫等點燃源引發(fā)爆炸事故。 以下是一些防爆電氣的基礎(chǔ)知識： 爆炸性物質(zhì)分級、分組 爆炸性氣體按其最大試驗安全間隙（MESG）或最小點燃電流比（MICR）分級，劃分為IIA，IIB和II……

防爆認證的防爆區(qū)域劃分

（一）爆炸性氣體環(huán)境區(qū)域劃分 0 區(qū)：在正常情況下，爆炸性氣體混合物連續(xù)地、長時間頻繁出現(xiàn)或長時間存在的場所，例如石油鉆井平臺的某些部位。爆炸性危險氣體存在時間通?！?000 小時/年。 1 區(qū)：在正常情況下，爆炸性氣體混合物有可能出現(xiàn)的場所，像煤礦非采掘面、石油石化封閉區(qū)域（有通風(fēng)口）等。該區(qū)域爆炸性危險……