Robotic Inspection – Arkan al Falah

Online Robotic Tank Inspection

The aim is to inspect Above storage tanks online without the need of shut down. The service is in compliance with API 653 and RP 575. The service is safe, cost effective and the UT READINGS ALONG WITH Extreme value analysis can result in extension of tank interval of inspection. The TUWAIQ robot is capable to be deployed in flammable product using Nitrogen purge in compliance with API 505.

TUWAIQ robot is the 1^st Robot to be deployed in DGA tank and is having a triangulation system to determine the exact location of the robot and ultimately the location of the defects in the tank floor.

The advantages of our technology

Safety

Cost
Effective

Timely

Integrity &
Reliability

No confined Space Entry
A certified procedure as per international procedures in compliance with API505
No environmental risk from discharging the tank

No Downtime
No need for alternate storage
No product transfer

Short Project Duration
Low cost. no man entry

UT Inspection and Remaining Life Assessment for Tank Bottom
Complies with RBI program

In-service robotic tank inspection is a proven technology incorporated in American Petroleum Institute Standards (API 653 , API RP 575)

API 653 Reference

6.4.1.2 All tanks shall have a formal internal inspection conducted at the intervals defined by 6.4.2. The authorized inspector shall supervise or conduct a visual examination and assure the quality and completeness of the nondestructive examination (NDE) results. If the internal inspection is required solely for the purpose of determining the condition and integrity of the tank bottom, the internal inspection may be accomplished with the tank in-service utilizing various ultrasonic robotic thickness measurement and other on-stream inspection methods capable of assessing the thickness of the tank bottom, in combination with methods capable of assessing tank bottom integrity as described in 4.4.1.

API RP 575 Reference

As Per API Recommended practice 575 section 6 It is stated that “API Std 653 recognizes the proper use of alternative inspection methodologies. For example, robotic inspection is one possible approach to achieve an assessment of the tank bottom and other internal members without personnel entry.” Further in API RP 575 Appendix A (Selected Non-Destructive Examination Methods) part A.5 it is mentioned that Robotic inspection is one of the recommended practices for storage tank inspection. In API RP 575 Section 7.4.4 the number of measurements taken for a statistical sampling will depend on the size of the tank and the degree of soil-side corrosion found. Typically, 0.2% to 10% of the bottom should be scanned randomly. The collection of thickness data is required to assess the remaining bottom thickness.

The cost of out of services inspection

Safety Measures

- - Inspection simulation with special testing equipment before deployment.
  - Control Room will not start if LEL sensors are not connected and reading less than 25% LEL level.
  - All wiring is insulated and sealed in the sheaving of the umbilical cable.
  - Circuit trip point in the umbilical cable: if the nitrogen pressure is low, the generator shuts down automatically.
  - TP near manway: if oxygen levels approach 5%, the generator shuts down automatically.
  - TP in zone 0: if nitrogen pressure is low, the generator shuts down automatically.

For more details open the PDF below

Open PDF

Our Services

Robotic Inspection
Tank Vapor Space Visual Inspection
Oily Sumpit Visual Inspection
Tank Cleaning and Sludge Removal

Submersible Robots
3D Structure Light
Sludge Assessment and Recycling

AFI Robotics

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