6.5 Emergency conditions due to drilling operations
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) - 6.5 Emergency conditions due to drilling operations

6.5 Emergency conditions due to drilling operations

  6.5.1 In view of exceptional conditions in which the explosion hazard may extend outside the above-mentioned zones, special arrangements should be provided to facilitate the selective disconnexion or shut-down of:

  • .1 ventilation systems;

  • .2 non-essential electrical equipment;

  • .3 essential electrical equipment;

  • .4 emergency equipment except battery supplied lighting and radio;

  • .5 generator prime movers.

  6.5.2 Electrical shut-down systems that are provided to comply with 6.5.1 should be designed so that the risk of unintentional stoppages caused by malfunction in a shut-down system and the risk of inadvertent operation of a shut-down are minimized.


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