ANALISA TEKNIS PENGUJIAN KEKEDAPAN PENGELASAN PADA TANGKI TONGKANG DENGAN MEMBANDINGKAN METODE CHALK TEST, AIR PRESSURE TEST DAN VACUUM TEST

Abstract

PT. Dock & amp; perkapalan kodja nautical ( persero ) shipyard
 banjarmasin is a company that move in ship industry, development for
 shipbuilding industry large enough aims to meet the needs of countries will ships
 as a country maritime .In doing their activities, company got a job as the
 construction of ships new, work a serviceman a ship etc. The field of that is
 associated with welding, welding identical also with a flaw and fraud especially
 on the part affected a serviceman .
 Testing impermeability a tank were done in order to the examination of the
 possibility of mismanagement of a connection is welding and why ensure the
 quality of welds, an adequate number of qualified to leakage in the connection las
 can be seen from that there was an indication who occuring when testing done in
 the same manner .There are several a method of testing, and among the companies
 were a method of lime oil , water test and a vacuum test drives in .Chalk test
 drives in / lime oil is a method of welding stability testing traditional tank , water
 pressure test drives in is a method of welding stability testing a tank by the
 principle of the compressed air and a vacuum test drives in also made use of of the
 nature of soapy water , only on the implementation of the activity a method of
 testing is provided by way of an instrument a vacuum box shaped with one of the
 sides open and one of the sides made from the materials of glass .
 In the process of testing kekedapan welding a method of the most accurate
 in a reading of a point to leakage in connection las that is a method of water
 pressure test/the compressed air with flattened flattened a reading of a point
 leakage is more than 1 in any its testing. A method of tests need time in at least
 the process that is a method of vacuum test and water pressure test.Testing first
 method vacuum test 1.15 hours and water pressure test by 0.47 hours. Testing
 second method vacuum test 1.30 hours and water pressure test 1.20 hours. Testing
 third method vacuum test 0.40 hours and water pressure test 0.50 hours. Testing
 fourth method vacuum test 1.15 hours and water pressure test 1.20 hours. Testing
 fifth method vacuum test .30 hours and water pressure test 0.37 hours. Testing
 sixth method vacuum test 1.40 hours and water pressure test 1.30 hours.