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API 653 Storage Tank Inspection Repair

Storage Tank Inspection & Repair Program

API 653 compliant inspection and repair of aboveground storage tanks at a major oil terminal

Overview

Project Overview

AETERNA was contracted to perform API 653 inspections on a fleet of aboveground storage tanks at a major oil terminal. The scope included internal and external inspections, ultrasonic thickness measurements, settlement surveys, and integrity assessments to ensure continued safe operation.

01
Tank Fleet

18 tanks including floating roof and fixed roof designs

02
Methods

UT mapping, MFL scanning, vacuum box testing, settlement surveys

03
Repair Oversight

6 tank repairs supervised to API 653 and ASME PCC-2

Challenge

The Challenge

Multiple tanks required internal entry and cleaning before inspection. Variable tank ages required tailored approaches. Some tanks exhibited significant bottom plate corrosion requiring detailed evaluation.

Two tanks were found with bottom plate thickness below minimum required - emergency repair planning was needed immediately to avoid extended production downtime.
Solution

Our Solution

Our API 653 certified inspectors performed comprehensive inspections including UT thickness mapping of shell and bottom plates, vacuum box testing of welds, and magnetic flux leakage scanning. We developed prioritized repair recommendations and re-inspection schedules aligned with the operator's integrity management program.

1

Inspection

Tanks cleaned and gas-freed. UT thickness mapping of bottom plates at 1ft grid intervals

2

Assessment

API 653 evaluation of shell, bottom, roof, and structural components

3

Repair Program

Supervised bottom plate replacement and annular ring repairs with risk-based schedules

Results

Key Results

Measurable outcomes delivered through our technical expertise and commitment to quality.

18
Tanks Inspected
6
Repairs
92%
Integrity
100%
API 653

Ready to Discuss Your Project?

Contact our storage tank inspection team to schedule your API 653 compliance inspection.

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