français vers anglais Technique / Génie Construction / génie civil operations in a job

Not much context: "sauts étanches" is one item in a list of "Outillage standard" for a job which involves injecting heated wax around a steel tie rod ("injection sous vide") and pressure testing to ensure there are no leaks. In case it helps, some other items in this list are "ceinture chauffante" (to heat the wax), "Bascule" (to weigh it), "pompe à vide". This term doesn't occur elsewhere in this document (that describes the procedure for injecting the wax and testing for leaks).