Saras Approved Storage Tank Suppliers: What the Standard Really Requires

Saras operates one of the Mediterranean’s largest refining complexes at Sarroch in Sardinia, Italy, alongside power generation and marketing activities. When a project’s storage tanks are ultimately destined for Saras-operated or Saras-affiliated work, “approved supplier” isn’t a marketing phrase — it’s a specific, audited status that Saras or its EPC contractor grants to individual manufacturers after a formal qualification process. For procurement and engineering teams in Italy sourcing storage tanks for this kind of work, understanding what that process actually involves is far more useful than searching for a badge.

This article explains what Saras-linked vendor approval covers, the engineering baseline it’s built on, and what to look for when qualifying a storage tank manufacturer for Saras-linked or Saras-grade projects.

What Saras Vendor Approval Actually Means

Vendor qualification on Saras projects typically involves a detailed audit of a manufacturer’s quality management system, welding procedures, plate and material control, non-destructive testing capability, and documented fabrication history. That audit is usually carried out by Saras’s own engineering and inspection teams, or by a third-party inspection agency acting on its behalf, and the resulting approval is specific to the manufacturer.

Because this status is granted directly by Saras to a named manufacturer, it isn’t something any supplier can claim without going through that process. What buyers researching suppliers can assess independently — before any formal audit — is whether a manufacturer’s engineering and quality practices are already built to the level Saras requires.

The Engineering Baseline Behind Saras-Grade Storage Tanks

Regardless of a tank’s final destination, the technical requirements that underpin Saras-grade fabrication are largely the same requirements that govern quality storage tank manufacturing generally:

Design Codes

API 650 for atmospheric storage tanks and API 620 for low-pressure tanks are common reference codes, with the European PED also applicable for pressure-relevant components, often supplemented with Saras’s own engineering standards for refinery-specific projects.

Material Traceability

Full mill test certificates and heat-number traceability carried from raw plate through to the finished, welded tank shell.

Foundation and Shell Engineering

Design that accounts for seismic loading, wind loading, and settlement, in line with API 650 annexes.

Welding Procedure Qualification

WPS and PQR documentation, with welders individually qualified under ASME Section IX or EN ISO 9606 as applicable.

Non-Destructive Testing

Radiographic testing of shell welds, vacuum box testing of floor welds, and magnetic particle testing where applicable.

Hydrostatic Testing

A full water test of the assembled tank shell before commissioning.

Third-Party Inspection

Hold-point sign-off from an accredited inspection body such as Lloyd’s Register, Bureau Veritas, TÜV, or DNV at critical stages of construction.

A manufacturer that applies this level of control as standard practice — not only on projects with a named end client — is generally the one positioned to succeed if and when a formal Saras audit takes place.

Where Notdstone Fits

Notdstone manufactures customized storage tanks for the safe storage of liquids, gases, chemicals, and petroleum products, serving Italy, the GCC, and international markets, with more than three decades of engineering experience across the team. Our fabrication and QA/QC processes are structured around the technical baseline described above — documented material traceability, ASME IX-qualified welding, comprehensive NDT, and hydrostatic testing before delivery.

To be clear with buyers researching this topic: formal vendor approval with Saras is issued directly by Saras to specific manufacturers following its own audit process, and we’re not claiming that status here. What we can speak to with confidence is the engineering rigor our storage tanks are built to on every project.

Equipment Built to That Standard

Storage Tanks

API 650/620-referenced tanks for liquids, gases, chemicals, and petroleum products.

Pressure Vessels

ASME Section VIII-compliant vessels engineered for safe containment under demanding pressure and temperature conditions.

Heat Exchangers

TEMA-designed shell-and-tube units for heating, cooling, condensation, and energy recovery.

Columns

Distillation, absorption, and stripping columns engineered for process efficiency in chemical and petrochemical service.

Reactors

Custom-engineered reactors for controlled chemical processing and reaction management.

Process Skids

Factory-assembled modular skids integrating vessels, pumps, piping, and instrumentation to compress site installation time.

Separators

Two- and three-phase separator vessels engineered for gas-liquid-liquid separation duty in upstream and process service.

FAQ

What does “Saras approved” mean for a storage tank supplier?

It means the manufacturer has been formally audited and accepted by Saras, covering their quality system, welding procedures, and testing capability for tank fabrication.

What design code applies to storage tanks on Saras-linked projects?

API 650 for atmospheric tanks and API 620 for low-pressure tanks are common reference codes, often supplemented with Saras’s own engineering standards for refinery-specific work.

Do Saras-grade storage tanks require special materials?

For aggressive stored products or refinery-specific service, yes — corrosion-resistant alloys or specialized internal coatings may be specified instead of standard carbon steel.

Since Saras operates in Italy, does that simplify sourcing for Italian manufacturers?

Being based in the same country as the end client can simplify logistics and communication, but it doesn’t replace the formal vendor-approval process — Italian manufacturers still need to be audited and accepted by Saras like any other supplier.

How can I verify a supplier’s vendor-approval claim?

Ask for written confirmation of the approval status and its exact scope — which equipment categories it covers — rather than relying on a general claim.

Working With Notdstone

If your project requires storage tanks engineered to API standards and manufactured under documented quality control, our engineering team can review your process requirements and provide a project-specific proposal. Get in touch with Notdstone to discuss your requirements.