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Case Study of Hybrid Onshore-Offshore CP Life Extension Retrofit for East Texas Facility

Product Number: 51324-20974-SG

Author: Yuxi Duan; Colette Brogna-Nichols

Publication Date: 2024

$40.00

Dock components of an East Texas oil and gas facility required a cathodic protection retrofit, however the scour in the area precluded traditional bottom-laid anode approaches. A pre-existing impressed current cathodic protection (ICCP) system protecting onshore assets was integrated with the offshore components to protect and extend the useful life of the associated facility docks and near-shore assets. Scour-protected bonds were used to integrate the onshore ICCP system to offshore assets, reducing the cathodic protection (CP) retrofit’s design footprint. Sacrificial anodes were installed where cable voltage drop and/or seabed scouring operations precluded bonding to the onshore ICCP system. This case study demonstrates that an ICCP-first hybrid retrofit is capable of protecting both offshore and onshore assets. The sacrificial anode cathodic protection (SACP) retrofit provided CP to remote dolphins and piles where installing bonding cables would have been impractical, given that routine scouring is expected in the area. The inspection data shows that above-ground storage tanks (ASTs), coated onshore pipelines, dock structures, both the land- and water-side bulkheads, and near-shore piles and dolphins can simultaneously meet NACE CP criteria with a properly-designed CP continuity retrofit.

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NACE SP0216-2016, “Sacrificial Cathodic Protection of Reinforcing Steel in Atmospherically Exposed Concrete Structures.”

Product Number: 21403-SG

Publication Date: 2016

$179.00

HISTORICAL DOCUMENT. Guidelines for sacrificial (galvanic) cathodic protection (SACP) of reinforcing steel in atmospherically exposed concrete elements or structures. Not applicable to nonferrous, coated or galvanized reinforcement.

Products tagged with 'sacp'

Case Study of Hybrid Onshore-Offshore CP Life Extension Retrofit for East Texas Facility

NACE SP0216-2016, “Sacrificial Cathodic Protection of Reinforcing Steel in Atmospherically Exposed Concrete Structures.”

Association for Materials Protection and Performance