电气设备防爆标志问题？ flameproof : d 隔爆型 pressurized : p 正压型 increased safety : e 增压型 intrinsic safety : ia/ib 本安型 oil-immersed : o 油浸型 encapsulation : m 浇封型 special : s 查看更多
关于unwetted vessel翻译？ 楼主看看api521--3.15.1.2.1,对unwetted wall vessel的解释: 3.15.1.2 effect of fire on the unwetted su**ce of a vessel 3.15.1.2.1 unwetted wall vessels are those in which the internal walls are exposed to a gas, vapor, or super-critical fluid, or are internally insulated regardless of the contained fluids. these include vessels that contain separate liquid and vapor phases under normal conditions but become single phase (above the critical) at relieving conditions. vessels may be designed to have internal insulation. a vessel should be considered internally insulated when the internal wall can become insulated by the deposition of coke or other materials as a result of the contained fluids. as in the case with wetted su**ces, relieving temperatures are often above the design temperature of the equipment being protected. if, however, the elevated temperature is likely to cause vessel rupture, additional protective measures should be considered (see 3.15.4 and 3.15.5).查看更多
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