block out在此何意?(设备绝热)? code inspection plates, nameplates, etc. on piping and equipment shall be blocked out so as to remain visible. 管子和设备上面的规范检验牌和设备铭牌等必须隔开于保温层之外而醒目可见。 1. 设备的code inspection不见得就一定非得是asme规范呀。欧洲常用的有关管子和设备的绝热保温的规范有bs5970 - code of practice for thermal insulation of pipework & equipment (in thetemperature range -100°c to +870°c) 2. 因为管子和设备需要包覆保温层,所以这些标牌/铭牌一般不会先固定在设备表面上包覆上保温层之后,然后在保温材料上开个口子,让这些标牌/铭牌露出来,那样的话标牌/铭牌之处就失去保温了。一般在需要做设备保温時,这些标牌/铭牌要么是设备做完保温之后订在保温层外面,要么是更常用的是用mounting bracket 安装托架和固定架把它们固定在设备之上,所以对设备包覆保温层的時候,就需要特別注意把这些标牌/铭牌的东东隔开于保温层之外(blocked out)而不要被包覆上。 3. code inspection plate俺手头沒有现成的照片給大家,但绝热保温的规范的规范检验牌通常会标明所包覆的保温材料和性能的识别, a=heat insulation, glass fibre b=heat insulation, mineral wool c=heat insulation, calcium silicate d=heat insulation, foam glass f=cold insulation, polyurethane or polystyrene formed in place g=cold insulation, preformed polyurethane or polystyrene h=cold insulation, foam glass j=acoustic insulation - light k= acoustic insulation – medium l= anti condensing insulation n=acoustic insulation – heavy p=personnel protection at locations of possible contact s=steam tracing t=electric tracing u=steam jacket v=water jacket w=wrapping, underground lines x=acoustic insulation – with impedance layer y=thermal and acoustic insulation 也会标示对应的保温温度范围,热导系数,使用的规范(比如bs5970 )查看更多