电脑桌面
添加小米粒文库到电脑桌面
安装后可以在桌面快捷访问

iso12944大气腐蚀环境

iso12944大气腐蚀环境_第1页
1/10
iso12944大气腐蚀环境_第2页
2/10
iso12944大气腐蚀环境_第3页
3/10
I SO / E N 1 2 9 4 4MJM/19/07/97/GDPage No. 17/31/98This standard, which is both a new International Standard and a EuropeanStandard, has been given positive votes by both the International and Europeancommittees and can now proceed to being a full published standard. It is unlikelythat this will be the case for all parts until mid 1998 at the earliest.It should be noted, that because of the approval given by the European committee,this standard will replace existing national standards such as BS5493 and DIN55928.The main problem I see at the moment is that it appears unlikely that the US basedspecifying houses will use the specification, but will continue to use SSPC andNACE guidelines.ISO 12944 states that it is designed for use by engineers who have some technicalknowledge in the area of corrosion protection, as well as knowledge of otherrelevant specifications.Many will find the durability ranges to be extremely useful - this is the estimated timeto first major maintenance. This needs to be agreed between the interested partieswith reference to ISO 4628/1 to ISO 4628/5. It should always be realised that muchless effort is required to maintain a coating which has broken down to Ri2 than onewhich has broken down to Ri3, for example.The ‘durability’ ranges considered are:-Low2-5 YearsMedium5-15 YearsHigh>15 Yearsand are assuming the coating has reached a breakdown level of Ri3.(It is emphasised that the durability range is not a guarantee time. It is purelypresent to help the owner of the structure estimate sensible maintenance times.The guarantee time is generally shorter than the durability range, and there is nosimple relationship between the two.)I S O / E N 1 2 9 4 4MJM/19/07/97/GDPage ...

1、当您付费下载文档后,您只拥有了使用权限,并不意味着购买了版权,文档只能用于自身使用,不得用于其他商业用途(如 [转卖]进行直接盈利或[编辑后售卖]进行间接盈利)。
2、本站所有内容均由合作方或网友上传,本站不对文档的完整性、权威性及其观点立场正确性做任何保证或承诺!文档内容仅供研究参考,付费前请自行鉴别。
3、如文档内容存在违规,或者侵犯商业秘密、侵犯著作权等,请点击“违规举报”。

碎片内容

iso12944大气腐蚀环境

确认删除?
VIP
微信客服
  • 扫码咨询
会员Q群
  • 会员专属群点击这里加入QQ群
客服邮箱
回到顶部