BELZONA SUPERWRAP II PATCHES SEAWATER BULK MEDIA FILTER VESSEL

KHIA ID: 5574

Industry: Oil & Gas (OILG)
Application: SOS-Ships and Offshore Structures (SOS)
Substrate: Carbon Steel

Customer Location: Gulf of Mexico, USA
Application Date: March 2015

Products:
Belzona 1121 (Super XL-Metal)

Belzona 1212

Belzona 1291 (ES-Metal)

Belzona 1982 (SuperWrap II Resin)

Belzona 9381 (SuperWrap II Reinforcement Sheet)

Belzona 9382 (Release Film)

Problem: Damage to the external part of the bottom of the vessel due to corrosive environment and seawater transported in the vessel.

Photograph Descriptions

Seawater Bulk Media Filter Vessel
After abrasive blasting
Belzona 1212 used to patch over thin wall area and sealed through-wall defect
Belzona Superwrap II applied as per engineered design

Application Situation

Seawater bulk media filter vessel on offshore Oil and Gas platform.

Application Method

The application was carried out in accordance with a modified Belzona Know-How System Leaflet SOS-5 for Reinforcing Cargo Tank Bottoms. The bolt plugging the hole was removed, water drained, and the defected area was exposed. The through-wall defect was sealed with Belzona 1291 and thinned areas were rebuilt with Belzona 1212. The substrate was then cleaned to the requirements of SSPC SP 10 (Near-White Metal) by abrasive blasting. Three wraps (6 layers) of Belzona Superwrap II were applied to the repair area according to design. SuperWrap II repair was consolidated by applying pressure against a curved surface made of Belzona 1121.

Belzona Facts

The customer chose Belzona SuperWrap II because it gave them a specified design life and the “engineering calculations” to prove it would work. Competitor products were unable to provide a specifically engineered composite patch. Customer was pleased with ease of the repair process versus traditional welding methods. By using a composite patch they were able to avoid emptying the entire vessel, hence saving a considerable amount of downtime and labor.

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