6 Additional Precautions for Entry into a Tank where the Atmosphere is Known or Suspected to be Unsafe
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - Circulars - Maritime Safety Committee - MSC.1/Circular.1401 – Guidelines on Tank Entry for Tankers Using Nitrogen as an Inerting Medium – (9 June 2011) - Annex – Guidelines on Tank Entry for Tankers Using Nitrogen as an Inerting Medium - 6 Additional Precautions for Entry into a Tank where the Atmosphere is Known or Suspected to be Unsafe

6 Additional Precautions for Entry into a Tank where the Atmosphere is Known or Suspected to be Unsafe

  6.1 Tanks that have not been tested should be considered unsafe for persons to enter.

  6.2 If the atmosphere in a tank is suspected or known to be unsafe, the tank should only be entered in the event of an emergency. The number of persons entering the tank should be the minimum compatible with the task to be performed.

  6.3 Suitable breathing apparatus, e.g., of the air-line or self-contained type, should always be worn, and only personnel trained in its use should be allowed to enter the space. Air-purifying respirators should not be used.

  6.4 Persons entering tanks should be provided with calibrated and tested personal multi-gas detectors that monitor the levels of oxygen, carbon monoxide and other gases, as appropriate. Rescue harnesses should be worn and, unless impractical, lifelines should be used. Appropriate protective clothing should be worn particularly where there is any risk of toxic substances or chemicals coming into contact with the skin or eyes of those entering the tank.

Parent topic: Annex – Guidelines on Tank Entry for Tankers Using Nitrogen as an Inerting Medium
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