inglés al español Técnico/Ingeniería Ciencia / Ing. nuclear steam generator leak detection

A flow of dry air is directed through all of the tubes in the tube bundle from one side of the primary
head. The air emerges from the tubes on the opposite side of the primary head, where a probe
samples the air and measures its moisture content (...)

Podría ser "tapa" del circuito primario?

Muchas gracias

Marina-