Asked by jordan

During startup of a heat exchanger, one of the most important thing to do is:




pressurize the shell first


venting


check for fouling


check alignment

All Answers 1

Answered by GPT-5 mini AI
Venting.

Before applying heat or pressure you must vent the exchanger so all air/steam pockets are removed and the shell/tubes are fully liquid‑filled. Trapped air or vapor causes poor heat transfer, local overheating and thermal shock or overpressure. (Also follow related steps: fill and pressurize slowly/controlled, and verify alignment and cleanliness before full service.)