6.4 Personal monitors
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Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1361 – Revised Recommendations on the Safe Use of Pesticides in Ships Applicable to the Fumigation of Cargo Transport Units – (27 May 2010) - Annex – Revised Recommendations on the Safe Use of Pesticides in Ships Applicable to the Fumigation of Cargo Transport Units - 6 Fumigation Detection - 6.4 Personal monitors

6.4 Personal monitors

  6.4.1 Small electronic personal monitors are available for Phosphine, but not for Methyl bromide. Phosphine monitors can be placed inside the cargo transport unit while unloaders are working, or worn by individuals on outer garments. The location of an independent monitor is important both to ensure that any fumigant is detected and ensure that the reading is not compromised by ventilation at the door or external contaminants. Monitors issue an audible signal if Phosphine levels reach the pre-set level and are useful as warning devices. However, they should not be used for the initial fumigation detection and measurement process. Also, electronic monitors have the disadvantage that they can respond to a range of harmless substances giving misleading alarm signals.

  6.4.2 Personal monitors are also available to show the level of oxygen within the cargo transport unit. This would indicate a deoxygenated atmosphere but would not necessarily indicate that the atmosphere is free from fumigant.

Parent topic: 6 Fumigation Detection
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