Frequently asked questions
What pipe sizes does the Internal RT Crawler inspect?
The Saudi Aramco-approved Internal RT Crawler covers pipeline diameters from 16 inch to 52 inch, carrying X-ray heads rated 160, 200 and 300 kV at 5 mA. Positioning accuracy is plus or minus 5 mm, and the crawler operates from minus 10 to plus 70 degrees Celsius.
Is the RT Crawler approved by Saudi Aramco?
Yes. Saudi Aramco Engineering Report SAER-13115, dated 8 September 2025, names TCR as the Internal RT Crawler technology provider, with USD 4,980,000 documented cost avoidance over five years, approximately an 80 percent reduction. Radiographic procedure TCR.QCP.REV-02 is conformant with SAEP-1143, the Aramco engineering procedure for radiographic examination.
What cross-country pipeline track record supports the crawler fleet?
TCR has radiographed 14,000+ pipeline girth welds across 2,600+ km of cross-country mainline, spanning 20+ named pipeline projects with 15+ master contractors. On a single project, EnProCon TJTC Kolar, 9,266 weld joints were digitally scanned and cloud-archived. The crawler fleet sits at TCR Engineering and TCR Arabia.
Has the RT Crawler worked outside the GCC?
Yes. The first non-GCC cross-border deployment was Nepal Oil Corporation's MAPL Phase II, executed via Likhita Infrastructure under Nepal Oil Corporation permission Ref 2080/81 dated 30 July 2023. The fleet, developed in-house at TCR, operates from both TCR Engineering in India and TCR Arabia in Saudi Arabia.