دانلود مقاله Thermal design of housing tube, conductors and maximum permitted load current of sealed cable penetrations through the steel containment of Nuclear Power Plant
سال انتشار: ۱۳۸۴
محل انتشار: بیستمین کنفرانس بین المللی برق
تعداد صفحات: ۶
Kholodniy – Doctor of Technical Science, Corresponding Member of Academy of Sciences of Russia, head scientific associate of OAO VNIIKP
Doostkam – Technical Representative of Atomic Energy Organization of Iran in Russia, “Bushehr” NPP
is 20 – 30 oС, while in the contaminated zone (inside the containment) it is 60 oС under nominal conditions, and can reach 90 and 150
oС under small and big leak conditions, accordingly. The sealed penetration construction is provided in Figure 1. The steel tube of the penetration (2) is fixed in the containment wall (1) by means of steel flanges (3) provided at the tube ends. Modules (6) with insulated copper conductors (5) run through the tube and the flanges. Stainless steel protection casings (4) are mounted on the flanges (3). The points where the modules pass through the flanges are fitted with tight seals. Each module of Elox sealed penetration contains from 1 to 40 insulated conductors, cross section of power and control cables varies from 0.81 to 254 mm2. Currents in durable mode are from 2.5 to 640 А. Each cable in the penetrations where КМЖ cables with magnesia insulation and copper tube sheathing are used is laid separately, with their sheathings soldered separately to the flanges.