Practice question

Purging with nitrogen (where used) aims to:

  1. Improve odour for crew comfort only
  2. Displace oxygen/flammable mixtures to reduce ignition risk under controlled procedures
  3. Increase oxygen to 30% for entry
  4. Replace cleaning water in every case without assessment

Answer: B — Displace oxygen/flammable mixtures to reduce ignition risk under controlled procedures

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