Oil & Gas

Ras Tanura, KSA

SURFACE TREATMENT & COATING

Industrial surface preparation and protective coating for offshore platform components and pipeline infrastructure, covering 50,000+ square meters.

Sandblasting & Painting

Overview

PROJECT OVERVIEW

Ranin International executed a large-scale surface preparation and coating program for offshore components and pipeline infrastructure at Ras Tanura. Over 50,000 square meters were treated with multi-coat epoxy and polyurethane systems, with fireproofing applied to critical structural members. The project achieved zero coating failures during the warranty period with full SSPC/NACE compliance.

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Details

KEY DETAILS

ClientNATIONAL OIL COMPANY

Year2023

Duration6 MONTHS

StatusCOMPLETED

HIGHLIGHTS

Over 50,000 square meters of surface area prepared, primed, and coated to specification

Sa 2.5 and Sa 3 surface preparation standards consistently achieved and verified

Multi-coat epoxy and polyurethane systems applied per manufacturer specifications

100% dry film thickness (DFT) compliance verified across all coated surfaces at every stage

SSPC/NACE-certified coating inspectors on site throughout the entire project duration

Zero coating failures reported during the full warranty period following project completion

Environmental condition monitoring logged before every coating application shift

Complete inspection data books delivered to client for asset integrity management records

Insights

PROJECT INSIGHTS

A detailed look at the challenges, methods, and outcomes that defined this project

SURFACE PREPARATION: THE FOUNDATION OF COATING PERFORMANCE

The longevity of any protective coating system depends primarily on the quality of surface preparation beneath it. Our blasting crews achieved Sa 2.5 and Sa 3 cleanliness standards across all 50,000+ square meters of surface area using controlled grit media with dust extraction. Before any coating was applied, each prepared surface was verified for profile depth using replica tape and digital gauges, and environmental conditions including ambient temperature, relative humidity, steel temperature, and dew point were logged to ensure they fell within the coating manufacturer's application parameters.

MULTI-COAT SYSTEMS FOR MARINE AND INDUSTRIAL ENVIRONMENTS

The coating system specified for this project — zinc-rich inorganic primer, high-build epoxy intermediate coat, and aliphatic polyurethane topcoat — is engineered for long-term corrosion protection in aggressive offshore and industrial environments. Each coat was applied by airless spray per the paint manufacturer's data sheets, with stripe coating applied to all edges, welds, bolt heads, and surface irregularities to ensure uniform film build. Controlled overcoat intervals between each layer ensured proper intercoat adhesion throughout the system.

FIREPROOFING OF CRITICAL STRUCTURAL MEMBERS

Beyond anti-corrosion coating, the project scope included passive fire protection of critical structural steel using both cementitious and intumescent systems. Cementitious fireproofing was applied to primary columns and beams, while intumescent coatings were used on architecturally exposed steel and areas requiring thinner profiles. Compatibility between the fireproofing systems and the underlying anti-corrosion coating was verified at every application point to ensure system integrity.

INSPECTION, DOCUMENTATION, AND WARRANTY PERFORMANCE

SSPC/NACE-certified coating inspectors were present throughout the entire project, verifying dry film thickness at every stage, performing holiday detection testing on all coated surfaces, and conducting adhesion pull-off testing at representative locations. Complete inspection records were compiled into data books for the client's asset integrity management system. The project was completed with zero coating failures during the full warranty period, validating both the quality of the coating materials and the precision of our application processes.

Scope

SCOPE OF WORK

Comprehensive delivery across all project phases

SURFACE PREPARATION

Abrasive blasting to Sa 2.5 and Sa 3 standards using controlled grit media and dust extraction

Surface profile measurement and verification using replica tape and digital profile gauges

Environmental condition monitoring (humidity, dew point, steel temperature) before every coating shift

Solvent cleaning and degreasing of contaminated surfaces prior to abrasive blasting operations

Mechanical surface preparation including power tool cleaning for areas inaccessible to blasting

COATING APPLICATION

Zinc-rich inorganic primer application with controlled film thickness per manufacturer data sheet

High-build epoxy intermediate coat and aliphatic polyurethane topcoat applied by airless spray

Stripe coating of all edges, welds, bolt heads, and surface irregularities for uniform coverage

Controlled overcoat intervals monitored between each coat to ensure intercoat adhesion

Touch-up and repair coating of transport and handling damage prior to final inspection acceptance

FIREPROOFING

Cementitious fireproofing application on primary structural columns and beams for passive fire protection

Intumescent coating application on architecturally exposed steel and thin-profile areas

Thickness verification and adhesion testing at regular intervals throughout fireproofing application

Mesh reinforcement installation within cementitious fireproofing where specified by fire engineering

Compatibility verification between fireproofing systems and underlying anti-corrosion coating

INSPECTION & DOCUMENTATION

Dry film thickness (DFT) measurements documented at every stage of the coating process

Holiday detection testing using low-voltage wet sponge and high-voltage spark methods as required

Adhesion pull-off testing per ASTM D4541 to verify bond strength at representative locations

Complete coating inspection reports compiled into data books for client asset integrity records

Daily inspection logs, non-conformance reports, and corrective action tracking throughout the project

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