English to Spanish Tech/Engineering Metallurgy / Casting rail welding

It is recommended that (brand)® welds be prohibited and should not be installed when the following conditions exist;

 On rail ends with the end bolt holes drilled.
 Within 4-1/8 inches of the edge of any hole in the rail.
 Within 2 inches of a cad weld or copper bond wire installation, if this type of bond exists, remove any presence of copper by grinding. The rail ends must then be inspected and cleaned after the grinding is complete.
 Closer than 2 feet from an existing plant weld.
 Closer than 14 feet to an existing (brand)® weld. Closely spaced (brand)® welds, which are brittle by nature compared to rail and flash butt welds, have contributed to derailments. Fourteen feet is slightly longer than a three axle locomotive truck.
 EXCEPTION: (brand)® welds can be placed closer than 14 feet but not less than 4 feet to existing (brand)® welds if the alternative is a rail joint, or if additional lengths of rail would have to be cut in to keep (brand)® welds at 14 feet apart. No bolt holes should exist between the 4 foot section of rail for (brand)® and 2 foot section for plant welds.