BS EN IEC 60519-8 pdf free download

BS EN IEC 60519-8 pdf free download. Safety in installations for electroheating and electromagnetic processing.
8 Protection against hazards from electric or magnetic fields This clause of Part 1 is applicable.
9 Protection against hazards from radiation
This clause of Part I is applicable.
10 Protection against hazards from thermal influences This clause of Part 1 is applicable, except as follows.
10.1 General
Additions:
10.1.101 Perforation of the crucible and base plate can cause a fire or an explosion due to the cooling-water flow into liquid metal and slag. The following special measures for design and operation of equipment shall be taken to ensure the protection of personnel and equipment.
a) Sufficient water-cooling to the crucible and base plate shall be ensured In the hot state. For further details, see 10.5.
b) The size of electrode(s) relative to the crucible shall be carefully designed and manufactured in such a way that they remain at a reasonable distance between the crucible and the electrode(s) to avoid the occurrence of arcing. The position of electrode(s) relative to the crucible shall be monitored during melting and aligned.
C) The mechanical properties of graphite electrode(s) and consumable electrode(s) shall be ensured to avoid cracking and a part of electrode dropping into the crucible that can cause arcing during the operation. The electrode(s) with horizontal cracks in the surface or inside is (are) unacceptable.
d) The strength of the welded zone between the consumable electrode and the electrode stub in the operation condition shall be sufficient to avoid it breaking away.
e) The voltage and current in the secondary circuit shall be carefully set and controlled to the limited values in the starting phase, especially in the case of cold starting with solid conductive slag, in order to avoid the electrode arcing or short circuit occurring with the base plate that can cause perforation of the base plate.
10.1.102 Slag materials shall be sufficiently dried before use in order to decrease the moisture so that molten slag cannot be ejected from the crucible during the melting of the slag.
10.1.103 The relative positions between the mould and the base plate shall be fixed and the gap between them shall be so narrow that the molten slag cannot leak out.
10.1.104 Water accumulation in the area around the melting station shall be avoided. Measures shall be taken to remove any water from this area in the event of leakage.
10.3 Hazards caused by working conditions
Additions:
10.3.101 The control station and the melting power supply shall be completely protected against the liquid metal and slag being ejected from the melting area.
10.3.102 The electrical, mechanical and hydraulic equipment as well as the flexible connections of cooling circuits shall be protected against heat radiated directly from the slag and electrodes and convected hot gases. They shall also be protected against heating in excess of admissible limits due to electric and electromagnetic phenomena (resistive or inductive).
So as not to impair safety, all metal parts which are subjected to high-intensity magnetic fields and are in contact with oil, shall be made of non-magnetic material and installed in such a way as to avoid formation of closed loops.BS EN IEC 60519-8 pdf download.