Hazardous areas Zone 2
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - International Codes - 1979 MODU Code – Code for the Construction and Equipment of Mobile Offshore Drilling Units – Resolution A.414(XI) - Chapter 6 – Machinery and Electrical Installations in Hazardous Areas for all Types of Units(See also 4.1) - 6.2 Classification of hazardous areas1 - Hazardous areas Zone 2

Hazardous areas Zone 2

  6.2.4

  • .1 Enclosed spaces which contain open sections of the mud circulating system from the final degassing discharge to the mud pump suction connexion at the mud pit.

  • .2 Outdoor locations within the boundaries of the drilling derrick up to a height of 3 metres above the drill floor.

  • .3

    • .1 Semi-enclosed locations below and contiguous to the drill floor and to the boundaries of the derrick or to the extent of any enclosure which is liable to trap gases.

    • .2 Outdoor locations below the drill floor and within a radius of 3 metres from a possible source of release such as the top of a drilling nipple.

  • .4 The areas 1.5 metres beyond the Zone 1 areas specified in 6.2.3.4 and beyond the semi-enclosed locations specified in 6.2.3.2.

  • .5 Outdoor areas within 1.5 metres of the boundaries of any ventilation outlet from or access to a Zone 2 space.

  • .6 Semi-enclosed derricks to the extent of their enclosure above the drill floor or to a height of 3 metres above the drill floor, whichever is greater.

Parent topic: 6.2 Classification of hazardous areas footnote
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