Walker Technical
greyShading

60" Seawater Overboard Caisson

 
DOWNLOAD CASE STUDY (click to download)

 

 

Overview

A 60 Seawater Overboard Caisson had sustained external corrosion, resulting in wall loss in two separate areas.

Scope

The scope of work was to provide an engineered composite repair with a 15 year design life. This required Technowrap Rope Access Technicians working in the splashzone applying the Walker Technical Technowrap Splashzone repair system over the defect areas.

Challenges

The job had to be postponed due to excessive wind speeds and adverse weather conditions.

Solution

The repair design dictated that a 4 layer Technowrap Splashzone repair system was applied. Walker Technical worked with the asset integrity team who provided surface preparation to Sa2.5 cleanliness and an average 65m profile for the required landing areas as per the engineered design calculations.

Following unavoidable delays, the repair was completed guaranteeing the caisson with an extended life for 15 years. The platform OIE commended the team for their quality of work and safe execution.