Radioactive Thorium Tungsten Electrode and Preventive Measures

TIG and plasma arc welding using thorium tungsten electrode containing 1-1.2 % of thorium oxide , thorium is a radioactive substance , in the welding process and thorium tungsten rod contact with the process, affected by radiation . Radiation acting on the body in two forms : one is external irradiation , the second is to enter the body through the respiratory and digestive systems occur in vivo exposure. From the right TIG and plasma welding mask a lot of investigation and determination proved that they are less harmful radioactivity , because daily consumption of thorium tungsten rods only 100-200 mg dose of radiation is minimal , little effect on the human body . But there are two cases must be noted: First, in the container welding, poor ventilation , dust in the radioactive particles may exceed health standards ; Second, when the grinding and the presence of thorium thorium tungsten rod tungsten rod locations , radioactive aerosols and radioactive dust concentration can reach or exceed health standards. Radioactive substances invade the body can cause chronic radiation sickness , mainly in the general functional state weakened , you can see the obvious debilitating weakness, decreased resistance to infectious diseases , weight loss and other symptoms. < br />
Measures to prevent radiation injury

( 1) Thorium tungsten rod should be a dedicated storage device , a lot of storage should be hidden in a metal box inside , and install the exhaust pipe .

( 2 ) Use of airtight cover welding, the operation should not open the cover , manual operation, the air must wear protective helmets or use other effective measures .

( 3 ) Shall be available exclusively to the grinding wheel thorium tungsten rod , wheel confidential install dust removal equipment, grinder debris on the ground should always be wet wipe and focus deep processing .

( 4 ) Grinding thorium tungsten rod should wear dust masks. After contact with thorium tungsten rod should wash their hands with soap and running water , and wash clothes and gloves .

( 5 ) The selection of appropriate standards welding , to avoid excessive burning thorium tungsten rod .

( 6 ) As far as possible without the use of thorium tungsten rod cerium or lanthanum tungsten rod tungsten rod , because the latter two non-radioactive .


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