Products tagged with 'deadlegs'

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Deadleg Stress Corrosion Cracking Risks in SS Piping Systems in Refining and Renewable Units

Product Number: 51324-20816-SG

Author: Cathleen Shargay; Garry Jacobs; Shahab Soltaninia

Publication Date: 2024

$40.00

Although the problem of chloride stress corrosion cracking (SCC) of austenitic stainless steel drain lines in hydroprocessing units has been well known for many years, new questions on these deadlegs are arising with the renewable units handling biofuel feeds. Some potential issues are in the hydrodeoxygenation (HDO) units and certain pretreatment units, wherever these units have high pressure SS piping. Many of the hydroprocessing unit case histories of leaks and cracks occurred shortly after startups from turnarounds and were attributed to water not being drained before startup. In contrast, some of the renewable units may have a risk of water condensing in deadlegs even during normal operation. The hydroprocessing unit case histories have been compiled to help to define the conditions, such as main line operating temperature and pressure which contribute to SCC in the deadlegs. The process chemistry, especially water content, oxygen and pH differences between the refining and renewable units are reviewed, and material recommendations are given for drain lines and other deadlegs in each type of unit.

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Evaluation Of Dead Leg Piping with Internal Corrosion at A Salt Dome Natural Gas Storage Facility

Product Number: 51323-19041-SG

Author: Leslie A. Ward, Len J. Krissa, Garry Matocha, Thomas Pickthall

Publication Date: 2023

$20.00

The essence of this paper is to talk about internal corrosion found in deadleg piping at the Enbridge Gas Transmission, & Midstream (GTM) Egan Hub Partners Storage Facility and especially how the corrosion was evaluated after the deadlegs were removed. The salt dome cavern storage facility is in south central Louisiana. The internal corrosion was found in the piping that comes from the storage caverns and goes through pressure reduction stations and then through dehydrations systems.

Products tagged with 'deadlegs'

Deadleg Stress Corrosion Cracking Risks in SS Piping Systems in Refining and Renewable Units

Evaluation Of Dead Leg Piping with Internal Corrosion at A Salt Dome Natural Gas Storage Facility

Association for Materials Protection and Performance