Regulatory Watch

An HBEL is not the same as an operating target

Regulatory Watch

An evergreen source briefing on the distinction between the safety basis and routine cleaning limits.

What happened?

EMA’s 2018 Q&A distinguishes health-based exposure assessments from operational cleaning limits. This is background guidance, not a new regulatory development.

EDITORIAL INTERPRETATION

Why does it matter?

A calculation and an operating decision need different supporting explanations.

Key points

  • Identify what each limit represents.
  • Keep source assessment and operating rationale traceable.
  • Define the response to an excursion.

Practical impact

Discussion prompt: add a short “purpose of this value” field to the limit worksheet so reviewers can distinguish safety assessment, acceptance and monitoring decisions.

Related regulatory requirements

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