# SR-3: robot model

Canonical ID: `791f75c0-1459-4b10-ba3d-8d0cfded258e`

- **Slug:** square-robot-sr3
- **Form factor:** subsea
- **Lifecycle:** active
- **Deployments registered:** 0

## Specs

- **class:** autonomous tank-inspection robot
- **method:** phased-array ultrasonic testing
- **coverage:** up to ~90% of tank floor
- **certification:** FM Class I Div 2

## Deployments

_No deployments registered for this model._

## Supply chain

_No verified supply relationships on file. Supply-chain coverage is being added across the registry; check back as the seed populates this model's suppliers._

_Suppliers appear when verified with at least two strong sources. Sources are append-only; corrections add new sources rather than rewrite history._

## Common questions

### What is SR-3?

Square Robot's SR-3 is an autonomous submersible robot that inspects the floors of in-service aboveground storage tanks containing volatile products, using phased-array ultrasonic testing (PAUT) to achieve up to ~90% floor coverage to API 653 / EEMUA 159 standards. FM-approved for Class I, Division 2.

### Who makes SR-3?

SR-3 is made by Square Robot, based in Boston, MA.

### Where is SR-3 deployed?

No verified deployments of SR-3 are currently on the DEPLOY registry. DEPLOY records deployments only when verified at a named site with a primary source; absence may reflect pre-deployment, research, or manufacturer-internal use.


## Sources (1)

1. https://squarerobot.com/robotic-tank-inspection-for-volatile-products/

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