Practice question

What level of non-fixed contamination on a vehicle surface requires decontamination before the vehicle can be released for general public transport under ADR 7.5.11 CV33?

  1. Contamination exceeding 1,000 Bq/cm²
  2. Any visible dust regardless of radioactivity
  3. Contamination exceeding 0.4 Bq/cm² for beta/gamma/low-toxicity alpha, or 0.04 Bq/cm² for all other alpha emitters
  4. Decontamination is never required for transport vehicles

Answer: C — Contamination exceeding 0.4 Bq/cm² for beta/gamma/low-toxicity alpha, or 0.04 Bq/cm² for all other alpha emitters

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