Introduction
Coretech Integrity, associated with StroyExpert has a great experience in Direct Assessment inspections.
For the 2008-2019 period our experts have successfully surveyed:
• 7 500+ km of Main Pipelines
• 50+ Oil Pumping stations
• 7 500+ km of Main Pipelines
• 50+ Oil Pumping stations
Main Objects Of Assessment
• main oil pipelines
• pipelines of oil pump stations
• main gas pipelines
• gas distribution pipelines
• pipelines of compressor stations
• underground gas storage facilities
• tools of cathodic protection
• highway and railroads transitions
Recent Direct Assessment case with JSC Transnet
Transnet Central Siberia, JSC, a subsidiary of the leading Russian oil transporting company – Transnet – is a large enterprise transporting hydrocarbons.
Direct Assessment was conducted by us at 132 km of a 48” dia. oil pipeline. ECDA, ICDA and SCCDA were conducted in accordance with NACE Standards:
• NACE ECDA SP-0502-2010. External Corrosion Direct Assessment Standard
• NACE LP-ICDA SP-0208-2008. Liquid Petroleum. Internal Corrosion Direct Assessment Standard
• NACE SCCDA SP-0204-2008. Stress Corrosion Cracking Direct Assessment Standard
• NACE ECDA SP-0502-2010. External Corrosion Direct Assessment Standard
• NACE LP-ICDA SP-0208-2008. Liquid Petroleum. Internal Corrosion Direct Assessment Standard
• NACE SCCDA SP-0204-2008. Stress Corrosion Cracking Direct Assessment Standard
We could identify 18 problem zones defected by corrosion and our report contained the following resulting information:
- Opinion of the subject-matter expert (SME) about DA effectiveness
- Description of damages, their mechanisms and causes
- RRR (Repair-Restore-Renew) - Remedial actions evaluation
- FFP (Fit for Purpose) - Estimating residual life
- Defining re-assessment period
- Defining inspection and maintenance plan
The work was performed in four steps:
1. Pre-Assessment
2. Indirect Inspection
3. Direct Examination
4. Post-Assessment