Skip to content
Slint SC Safety Manual

Standards Compliance

Standards in Scope

Section titled “Standards in Scope”

Slint SC targets three functional safety standards:

  • ISO 26262, for automotive.
  • IEC 61508, for industrial.
  • IEC 62304, for medical device software.

The analysis and the evidence are the same for all three. What differs is the integrity level each one asks for and the clauses each one imposes, so the Tool Classification is done once per standard.

Nothing in this package is specific to one application domain. Slint SC renders a safety-related user interface; what that interface controls or reports is the integrator’s concern.

Specification and Management of Safety Requirements (ISO 26262-6 6.x)

Section titled “Specification and Management of Safety Requirements (ISO 26262-6 6.x)”

The standards tell us what properties a safety-critical system must have (traceability, freedom from interference, determinism, etc.), but they don’t tell us how to write those requirements for a GUI toolkit.

Slint SC states them in two places. The Language Specification says what the language and the runtime must do, one identified paragraph at a time, and each paragraph is traced to the tests that verify it. The Evaluation Report says what can go wrong instead, and what detects or constrains each of those.

Integrity Level

Section titled “Integrity Level”

Slint SC is a Safety Element out of Context (SEooC). It’s developed without a specific application function, so it has no integrity level of its own to derive. Instead it’s developed to be capable of the level below, and the integrator confirms that level is the one their application needs.

  • ISO 26262: ASIL B. ASIL (Automotive Safety Integrity Level) describes the risk level of something. ASIL D=highest, C=high, B=medium, A=low risk, QM = not safety critical. Without an application function there’s no HARA (Hazard Analysis and Risk Assessment) to derive an ASIL from, so ASIL B is a target rather than a result.
  • IEC 61508: (TODO) decide the SIL Slint SC is developed to be capable of.
  • IEC 62304: (TODO) decide the software safety class.

Where an application isn’t safety related at all, the full Slint framework can be used instead, and none of this applies.

ISO 26262 Clause Map

Section titled “ISO 26262 Clause Map”

All ISO26262 references below are valid for the 2018 edition of the standard.

(TODO: the equivalent maps for IEC 61508 and IEC 62304.)

© 2026 SixtyFPS GmbH