3 Pre-Planning
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 - 3 Pre-Planning

3 Pre-Planning

  3.1 Prior to entering a tank, all persons who are to be involved in the task should meet to:

  • .1 define the purpose of entering the tank;

  • .2 identify the steps to be taken to achieve the purpose;

  • .3 develop a plan of action; and

  • .4 assign responsibilities.

  3.2 The meeting should address:

  • .1 scheduling of manpower – may include the following:

    • .1 authorization: the master will be ultimately responsible for authorizing tank entry. An officer should be designated as the responsible person with sufficient knowledge of the procedures to be established and complied with on board, in order for ensuring that the correct procedures are observed;

    • .2 the person undertaking the testing of the atmosphere should be trained in the use of the equipment. Only properly calibrated equipment should be used and the manufacturers' instructions should be strictly followed;

    • .3 attendant means a person who is suitably trained within the safety management system, maintains a watch over those entering the tank, maintains communications with those inside the tank and initiates the emergency procedures in the event of an incident occurring; and

    • .4 tank rescue team are any members of the crew trained in the use of rescue and resuscitation equipment;

  • .2 tank washing;

  • .3 gas freeing;

  • .4 testing of the tank atmosphere;

  • .5 identifying and minimizing physical hazards;

  • .6 listing equipment needed, i.e. safety, fire fighting, communication, tools, escape and rescue;

  • .7 advising personnel who will enter the space of the hazards associated with the operation;

  • .8 maintaining safe conditions in the tank; and

  • .9 reviewing emergency procedures for rescue and fire fighting – may include the following:

    • .1 the person in charge of the rescue party should not enter the tank, but should coordinate the rescue operation from the tank access;

    • .2 in the event that a casualty must be removed from the tank, sufficient persons must be on deck and available to effect proper use of the rescue equipment;

    • .3 sufficient persons should be assigned to the tank rescue team. They should be familiar with the tank arrangement and trained in the use of the equipment and able to deliver first aid; and

    • .4 the decision to remove an injured person from the space must be based on the relative danger of his location and extent of his injuries, versus the danger of increasing his injuries by movement prior to effecting first aid.


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