Advanced On-stream Solutions for Touch Point Corrosion Damage
Touch point corrosion (TPC) is damage mechanisms that plague industry. Accelerated external wall loss at these highly localized points presents particular integrity concerns as the damage is:
- Difficult to avoid
- Difficult to measure
- Difficult to detect
- Difficult to remediate
Seamless TPC Integrity Solution Offerings
- Laser Scanning
Laser Scanning Visualization and UAV Inspection
TEAM has the capability to rapidly capture geospatial data and create a digital model of the plant or facility. This data allows touch points to be identified, digitally tagged and cataloged. TEAM utilizes advanced drone technology as part of its comprehensive solution set, which allows the operator to quickly carry out visual inspection areas of concern with restricted access without the need to erect expensive scaffolding.
- Rope Access
Rope Access – Close Visual Inspection and NDE
Where remote screening has identified potential for damage TEAM can deploy fully certified rope access technicians to gain further insight, TEAM’s Technicians are certified in a wide range of NDE methods allowing data to be collected without the need to erect expensive scaffolding unnecessarily. Findings from the rope access work can then inform further decisions, avoiding wasting resources on false positive damage concerns.
- Advanced NDE
Advanced NDE Damage Screening & Sizing
TEAM employs both direct and indirect ultrasonic methods which enable industry leading technicians to identify, assess, and quantify areas of concern related to TPC and CUPS. TEAM’s extensive range of NDE techniques allows Level 3 practitioners to deploy the best technology for the application from digital profile radiography, bulk wave UT, M-Skip, guided wave and EMAT.
M-Skip Phased Array utilizes high angle phased array ultrasonic inspection to identify and quantify areas of concern several inches away from the transducer location.
Guided Wave (Long Range) provides a complete volumetric assessment of the piping system under evaluation and can identify and qualify multiple contact points from a single test location.
EMAT (Short Range) utilizes an EMAT based ultrasonic semi-automated pipe crawler that can provide indirect remaining wall measurements on the pipe system.
- API 579 Fitness for Service
API 579 Fitness for Service
Should NDE determine that damage is expected, TEAM’s advanced engineering group can carry out a first-pass fitness for service assessment to guide next steps, including assessing the risk of lifting the line on-stream to gain access to any damage. TEAM has the capability to carry out fitness-for-service assessments up to to API 579 Level 3 using finite element analysis. This fitness-for-service can be further refined based on any subsequent inspections of the damage.
- On-Stream Line Lifting
Engineered On-Stream Line Lifting
Should any damage detected require further assessment using direct methods, or a repair or remediation, TEAM is able to carry out a engineering analysis of the damage line to assess the risk of lifting. If suitable, TEAM can lift the line in a controlled manner to create access for further activities. TEAM’s engineered on-stream line lifting solution provides a step change in safety in comparison to lifting using cranes or uncontrolled jacking. TEAM’s solution provides the following benefits:
- Lift curvature evaluated using piping stress analysis
- Lift height limited using mechanical stops
- Detailed Risk Assessment and JSA collaboration
- Full lift height mechanically locked, hydraulics depressurized
- Ultra-portable lifting jacks – suitable for manual handling
- Rapid movement of lift points along pipe supports
Remediation & Repair
Where coating breakdown and minor damage is found, TEAM is able to remediate the contact point using a range of advanced coatings and bonded wear plates, eliminating the crevice and preventing further degradation.
Should a fitness-for-service assessment deem a repair is required, TEAM’s industry leading composite repair system can be deployed. TEAM controls the full repair process from material selection through design, installation and inspection ensuring compliance with ASME PCC-2 and ISO 24817. Where a composite repair is unsuitable, TEAM’s mechanical repair enclosures
- Condition Monitoring
Condition Monitoring – Ensuring Ongoing Reliability
A reliability-focused touch point corrosion program is not just a discrete project, on-going monitoring of the plant is required to ensure integrity. TEAM’s program includes the option of a range of monitoring techniques from conventional riskbased inspection through to permanently installed guided wave collars that allow real time condition assessment for critical lines.