Installation & Field Services
TTT technology. Backed by real-world fabrication and installation capability.
Tuff Tube Transition provides the patented connection technology. Viking Vessel Services provides the code-qualified fabrication, welding, quality and field capabilities to support TTT projects when customers need more than component supply.
From replacement-header fabrication to field tube alterations and installation support, Viking gives TTT customers a practical route from engineered solution to completed project.
One technology — complete project support
From component solution to completed project.
TTT can be supplied as a patented component solution, but some projects require engineering coordination, fabrication, qualified welding, inspection, documentation and field installation.
That is where Viking Vessel Services adds value.
Engineering & Project Support
Project review, engineering coordination and TTT application support.
Fabrication & Qualified Welding
Replacement-header fabrication, power piping and qualified welding.
Quality & Inspection
Quality control, inspection support and project documentation.
Field Services & Installation
TTT installation, industrial boiler/HRSG work and plant field services.
Code-qualified capability
Code-qualified fabrication & alteration capability.
For TTT and HRSG work, the two most relevant Viking authorizations are its ASME Section I S Certificate of Authorization and its National Board R Certificate of Authorization.
ASME Section I — S Authorization
Viking holds an ASME S authorization supporting applicable Section I boiler, HRSG and power-piping manufacturing work, including replacement-header and pressure-part manufacture where the project requires Section I Code manufacture.
National Board — R Certificate
Viking also holds a National Board R Certificate of Authorization for repairs and alterations performed in accordance with the National Board Inspection Code (NBIC). TTT field tube work that is classified as an alteration is performed within the applicable R-alteration process, with the project-specific Code/NBIC documentation route determined by the scope of work, original construction Code, Inspector and jurisdictional requirements.
Replacement header projects
The applicable certification and documentation route depends on the project scope. Replacement pressure parts may be manufactured under the applicable ASME Section I authorization, while NBIC repair/alteration projects may also involve replacement-part fabrication and R-form documentation where permitted by the applicable Code/NBIC requirements.
Viking's combination of S and R capabilities gives TTT projects flexibility across both new Section I manufacture and in-service repair/alteration work.
Viking also holds an ASME U authorization for Section VIII pressure-vessel work. It is a current Viking capability but is not central to the TTT/HRSG application.
Replacement header fabrication
From engineered connection to complete header assembly.
For Header Integrity Program projects, Viking can support the fabrication of replacement HRSG header assemblies incorporating Tuff Tube Header Connections (TTHCs), subject to the applicable Code, NBIC, Inspector and jurisdictional requirements.
Integrating the TTHC during controlled fabrication moves critical connection work away from the outage environment and lets the replacement assembly arrive prepared for installation.
TTT field installation
Qualified support for TTHC & TTPS applications.
TTHC
Tube-to-header
Supports tube-to-header connection work and replacement-header applications.
View TTHC product detail
TTPS
Tube-to-tube
Supports tube-to-tube tie-ins using the Tuff Tube Purgeless Sleeve connection.
View TTPS product detailInstallation work is performed to the applicable project requirements, approved welding procedures, Code/NBIC requirements and quality program.
Welding & quality
Qualified welding. Controlled quality.
Viking's shop and field capabilities are supported by approved welding procedures, qualified personnel, project-assigned quality control, inspection and documentation appropriate to the application.
- GTAW
- GTAW / Orbital Welding
- SMAW
- FCAW
- GMAW
- SAW
- Project-assigned QC inspection
- Project documentation
- In-house welder training
- Fit-up / visual inspection hold points
- Project Code, Inspector & quality-program requirements
For TTT work, the welding process, procedure and inspection route are determined by the specific application, material, approved WPS and governing project requirements.
From component supply to turnkey support
Choose the level of support your project needs.
TTT Component Supply
Genuine TTT components for qualified project applications.
Technical / Project Support
Application review, installation resources and coordination.
Fabrication Support
Replacement-header and pressure-part fabrication where applicable.
Field Installation
Qualified welding, alteration and installation services.
Integrated Project Support
Coordination from engineered TTT solution through fabrication and field execution.
24/7 Emergency support available
Urgent outage or tube / header issue?
+1 (855) 420-2025 · Ext. 6
Next step
Need more than the component?
Talk to TTT about your repair, outage or replacement-header project. We can help determine the TTT technology required and whether Viking fabrication or field support would benefit the project.
Viking Vessel Services is a separate company providing the fabrication, welding and field capability behind TTT projects.