This preview shows page 1. Sign up to view the full content.
Unformatted text preview: Installation and Welding of Pipe Testing Excavate trench to depth necessary, using laser level to find rough grade and line. Excavated material should be placed in designated spill pile Place proper protective system Place pipe with designated equipment, coordinating placement with operators and workers in the trench Survey joints to confirm they are at correct location (Note: if using bell and spigot connection, overlap must be correct, as well) Welding of inside and outside of pipe After welding passes testing CLSM can be poured After CLSM sets, backfill should be placed and compacted Mag Partial Testing checks for errors in welding and fractures Air testing checks for annular space between each joint Nuclear density gauge tests for compaction of fill All testing must be complete and pass specifications before CLSM can be poured Note: Tests and requirements may vary depending on specifications...
View Full Document
- Fall '08