• Testing@Lonestar-Lab.com
  • Enquiry@Lonestar-Lab.com
  • +971 55 571 7957
  • Home
  • About Us
  • Services
    • Analytical Chemistry
    • Civil / Construction Material Testing
    • Clean Room Validation
    • Environmental Testing
    • Food Testing
    • Geotechnical Engineering
    • Indoor Air Quality Monitoring
    • Industrial Hygiene
    • Material/Metallurgical Testing
      • Coating Test Facilities
      • Corrosion Testing
      • Fracture Toughness (CTOD) Testing
      • Full Ring Test
      • Mechanical Testing
      • Metallurgical Failure Investigation
      • Salt Spray Test
    • Topographic Survey
  • Accreditations & Certifications
  • QHSE
    • QHSE
    • OHSE Policy
    • Quality Policy
    • Survey
  • Clients
  • Downloads
  • Enquiry
  • Contact Us
  • Home
  • About Us
  • Services
    • Analytical Chemistry
    • Civil / Construction Material Testing
    • Clean Room Validation
    • Environmental Testing
    • Food Testing
    • Geotechnical Engineering
    • Indoor Air Quality Monitoring
    • Industrial Hygiene
    • Material/Metallurgical Testing
      • Coating Test Facilities
      • Corrosion Testing
      • Fracture Toughness (CTOD) Testing
      • Full Ring Test
      • Mechanical Testing
      • Metallurgical Failure Investigation
      • Salt Spray Test
    • Topographic Survey
  • Accreditations & Certifications
  • QHSE
    • QHSE
    • OHSE Policy
    • Quality Policy
    • Survey
  • Clients
  • Downloads
  • Enquiry
  • Contact Us

Full Ring Test

Lonestar has the capacity, resources and space required to conduct several Full Ring Tests (also known as CAPCIS Tests) simultaneously on various sizes of pipe coupons. These tests are required by numerous Oil and Gas companies to determine performance of materials under source service conditions using a full ring pipe coupon.

Sour service problems in pipeline steels are caused by various forms of hydrogen damage due to presence of Hydrogen Sulfide. The main mechanisms are Hydrogen Induced Cracking (HIC), Sulfide Stress Corrosion Cracking (SSCC) and Stress Oriented Hydrogen Induced Cracking (SOHIC).

SSCC and HIC have long been recognized and have well established standard test procedures. For SSCC to occur a combination of tensile stress (applied and/or residual), corrosive environment and susceptible material is required. Stresses found within pipework systems are predominantly tensile and the environment i.e. sour oil and gas is a highly corrosive environment. HIC requires only the corroding environment. SOHIC is a combination of both SSCC and HIC and generally requires some element of stress, together with the Sulfide containing environment

There is a clear need for a laboratory based test method which can be used to evaluate the susceptibility of steels to all forms of cracking due to sour service. The Full Ring Test Method (FRT) has been designed to determine such susceptibilities.

Testing Method

  • OTI 95 635

Testing Suitability

  • Full circumferential ring is tested including all welds, HAZ and parent metal
  • Online monitoring (UT Scan, hydrogen permeation) possible
  • Full residual stress of manufacture and welding retained
  • Full weld included and tested
  • Full coupling of dissimilar materials along residual stress

Testing Process

  • Strain Gauging of test ring to measure the applied stress
  • Test cell containment
  • Periodic On line UT monitoring for crack detection
  • Unloading
  • Magnetic particle inspection
  • Metallography
  • Analytical Chemistry
  • Civil / Construction Material Testing
  • Clean Room Validation
  • Environmental Testing
  • Food Testing
  • Geotechnical Engineering
  • Indoor Air Quality Monitoring
  • Industrial Hygiene
  • Mechanical/Material
    • Coating Test Facilities
    • Corrosion Testing
    • Fracture Toughness (CTOD) Testing
    • Full Ring Test
    • Mechanical Testing
    • Metallurgical Failure Investigation
    • Salt Spray Test
  • Topographic Survey


Lonestar (Lonestar Dubai & Lonestar Abu Dhabi) are both ISO/IEC 17025:2017 Accredited Testing Laboratories by Emirates International Accreditation Centre (EIAC). Lonestar Dubai is also accredited by GCC Accreditation Center (GAC) and International Accreditation Service (IAS) respectively, while Lonestar Abu Dhabi Lab and Inspection are both accredited by Emirates National Accreditation System (ENAS) as per ISO/IEC 17025:2017 & ISO 17020:2012 Standards the scope of accreditation are available on their respective website. Further, Lonestar Abu Dhabi is approved as Designated Laboratory by Abu Dhabi Quality and Conformity Council (ADQCC). Both Laboratories (Lonestar Dubai & Abu Dhabi) are certified by TUV as per ISO 9001:2015, 14001:2015 and ISO 45001:2018.

© 2019 All Rights Reserved by Lonestar Technical Services LLC