#1726
huubhubregtse
Participant

HI

the bellows are installed in the steam duct.
they consist of a SS bellows welded to CS rings.
Some of them are Multi ply where the inner sheet gives the sealing.
the other sheets are mostly having holes to avoid pressure between the sheets.
if the innner ring get a hole due to fatique there is a entrance for air into the ACC.
We have seen this problem before

Huub