What is the minimum waiting time after Halon discharge before re-entry?

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Multiple Choice

What is the minimum waiting time after Halon discharge before re-entry?

Explanation:
After Halon discharge, you don’t re-enter until the space is ventilated and the atmosphere is confirmed safe. The minimum waiting time is fifteen minutes because Halon displaces oxygen and can linger in enclosed spaces. Giving time for ventilation to purge the gas and for oxygen levels to recover reduces the risk of asphyxiation. The space should be tested with appropriate detectors and declared safe by qualified personnel before anyone enters. If oxygen is still low or Halon concentration remains high, wait longer and re-test.

After Halon discharge, you don’t re-enter until the space is ventilated and the atmosphere is confirmed safe. The minimum waiting time is fifteen minutes because Halon displaces oxygen and can linger in enclosed spaces. Giving time for ventilation to purge the gas and for oxygen levels to recover reduces the risk of asphyxiation. The space should be tested with appropriate detectors and declared safe by qualified personnel before anyone enters. If oxygen is still low or Halon concentration remains high, wait longer and re-test.

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