CPR Repairs Leak In Place on 72″ CCW Metal Bellows
CUSTOMER: A nuclear power plant in Ontario
APPLICATION DATE: 2003 & 2005
PROBLEM: Corrosion inside bellows possibly caused during unit layup resulted in leak to bellows. Bellows operates under vacuum at approximately 100F.
SUBSTRATE: Steel
APPLICATION METHOD: After surface preparation CPR Material was applied to hole and surrounding area on bellows.
CPR FACTS: Additional repairs were carried out on second unit in 2005. CPR repair avoided need for bellows replacement which would have taken valuable weeks during unit restart and cost 20 times as much as the CPR repair.
PHOTOGRAPHS
View of bellows showing leak to bottom section near 6 o’clock position.
Close up of cracked and leaking area.
Application of CPR Material in progress.
Completed application. CPR Material ended up being approximately 1/8″ thick in most sections.