Condensing (Sweating) Lines
Download Case StudyCNOOC Offshore Platform, China
Client: CNOOC
Location: Offshore, Bohai Sea
Conditions: High humidity, salt spray.
Object: Active sweating pipeline. Cracked disbonded coating
Year of application: 2018
Coating system:
- Wrappingband SZ (WSH)
- Outerwrap HSPEX
- Outerglass Shield
Surface preparation: St2/St3 Power tool grinding disc; cleaned, degreased w/ isopropyl alcohol
Access
- HSE – minimise impact
- Safety – Reduce risk to applicators
- Ergonomics – Ease of access and application strain
- Waste disposal – minimise waste and conform to non-hazardous standards
Climatic conditions
- High humidity
- Surface salt contaminants – system
Quality according to surface maintenance strategy
- Protective system – application quality repeatability
- Pre-treatment – minimise necessity for mistakes
- Application – easy and fast during work windows
- Competence – easy to train personnel
Project Summary
- Entire application completed in two days, including surface prep
- Surface preparation achieved was above minimum requirements
- Technology met with expectations – no downtime
- Application met with expectations – no downtime
- Quality of applied wrapping was excellent
- No significant waste disposal issues
Condensing Lines Coating System
- Product description:
- Stopaq Wrappingband WSH is a corrosion preventing wrap material
- that is especially designed for application on wet and submerged tubular objects,
- and it can also be applied on dry substrates. It adheres very well to bare steel and existing coatings.
- Wrappingband WSH – Product Data Sheet (English)
- Product description:
- Stopaq Outerwrap HSPEX is an outer wrap tape providing mechanical protection for Stopaq®
- corrosion preventing coating systems. It is made of a radiation cross-linked high density polyethylene
- backing (HDPE) and high tack butyl rubber adhesive. It’s well suited for above ground, underground
- and submerged applications. Stopaq® Outerwrap HSPEX is a highly flexible UV-resistant Outerwrap,
- providing impacts, indentations and abrasion resistance to the complete Stopaq system
- Outerwrap HSPEX – Product Data Sheet (English)
- Product description:
- Stopaq® Outerglass Shield is a composite wrap material consisting of a glass-fibre fabric impregnated
- with a solvent free moisture curing polyurethane resin. It is used as additional mechanical protection
- on Stopaq® corrosion preventative coating systems comprising Wrappingband and Outerwrap
- materials in order to obtain the desired resistance to mechanical loads, multiple layers can be applied.
- Outerglass Shield – Product Data Sheet (English)
