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Elucidating The Influence Of Calcium Ion Concentration On Corrosion Inhibitor Performance

Product Number: 51321-16692-SG

Author: Michal Ciolkowski; Neil Bretherton

Publication Date: 2021

$20.00

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Weld Jointing Influence on Boiler Tube Sheet Integrity

Product Number: MPWT19-14366

Author: Sameer Ayyar, Mahmood Al-Ridy, Farhat Choudhary, Adi Alammari, Itoro Akrasi

Publication Date: 2019

$0.00

Boiler system is one of the most critical systems for a utility plant. A utility plant had experienced high percentages of boiler downtime owing to boiler tube sheet cracking failures. Investigations carried out revealed high stress at the tube-to-tube sheet joint in the boiler fire-side entrance. Tube-to-tube sheet joints at the boiler fire-side entrance had been fabricated by strength welding and without any expansion. The strength welded joint had created undue stress leading to cracking of the weld joint by thermal expansion. A higher quality expanded joint consisting of expanding, flaring and seal welding the fire-side entrance was implemented during the re-tube process. The utility plant has now zero downtime due to boiler tube failure. This article summarizes the description and history of failures with the boiler at the utility plant; investigations and corrective actions carried out; and the present improved condition of the boilers.

Products tagged with 'tds'

Elucidating The Influence Of Calcium Ion Concentration On Corrosion Inhibitor Performance

Weld Jointing Influence on Boiler Tube Sheet Integrity

Association for Materials Protection and Performance