Project Scope: Manufacture, quality release and factory dispatch of an ST35/08 modular water storage tank with a capacity of 3,745 kL.
The project required strict quality control and detailed documentation.
Multiple stakeholders also needed to inspect and verify the work. At the same time, the project had a fixed delivery schedule.
The manufacturing and inspection processes therefore had to work together. The goal was to identify issues early, reduce rework and prevent delays during final assembly.
The Project Data Book was compiled throughout the manufacturing process.
Material test certificates, incoming inspections, dimensional checks and release inspections were recorded as work progressed. This ensured that quality records were complete and traceable.
Witness points and component fit-up checks were included in the production schedule.
The client was notified early when inspections were required. This allowed inspections to take place without stopping the production line.
The project specification required 10% Non-Destructive Testing (NDT) on specified structural and piping components.
SBS Tanks carried out testing beyond this requirement. This provided additional verification of component integrity before release.
Two independent specialist service providers were appointed.
One specialist carried out Visual Testing (VT). The other conducted Dye Penetrant Testing (PT).
This provided focused inspection of the relevant components.
NDT and witness activities were observed and validated on-site.
The inspection team included the Quality Coordinator, two Heads of Department and the Operations Manager.
This provided multiple levels of quality oversight throughout the process.
Pre-dispatch inspections confirmed component fit-up and readiness for final assembly and packaging.
The process helped minimise rework and material waste while keeping the project on schedule.
The completed NDT reports and Project Data Book were available for client review and sign-off.
The tank was then formally released for dispatch.
This project demonstrates the importance of quality assurance throughout the manufacturing process.
From material verification and inspections to NDT and final release, each stage was documented and controlled.
The result was a structured manufacturing process designed to support quality, traceability and reliable project delivery.
This case study demonstrates how SBS Tanks applied rigorous manufacturing quality controls to the production of a 3,745 kL ST35/08 modular liquid storage tank. The project required strict documentation, stakeholder inspections and non-destructive testing while maintaining the target delivery schedule. Quality controls included progressive Project Data Book compilation, scheduled witness points, dimensional inspections and NDT beyond the specified 10% requirement. Independent specialists conducted Visual Testing and Dye Penetrant Testing, with inspections overseen by SBS quality and operations personnel. Comprehensive pre-dispatch verification and completed quality documentation enabled client sign-off and formal release for dispatch.
Quality controls included material verification, incoming inspections, dimensional checks, component fit-up inspections, witness points, release inspections and Non-Destructive Testing (NDT).
A Project Data Book is a collection of project quality and manufacturing records. For this project, documentation was compiled progressively throughout manufacturing, including material certificates, inspection records and release documentation.
The project included Visual Testing (VT) and Dye Penetrant Testing (PT), conducted by independent specialist service providers.
Yes. While the project specification required 10% NDT on specified structural and piping components, testing was carried out beyond the required threshold to provide additional verification.
NDT and witness activities were observed and validated by the Quality Coordinator, two Heads of Department and the Operations Manager.
Inspection and witness points were incorporated into the production schedule, with early client notification allowing inspection activities to take place without disrupting the manufacturing sequence.
Pre-dispatch verification confirmed component fit-up and readiness for final assembly and packaging. The completed NDT reports and Project Data Book supported client sign-off and formal release for dispatch.
© SBS Holdings 2026
