What are hazards associated with DRI or Direct Reduced Iron ?

DISCHARGE PRECAUTION 

The hydrogen concentration in the cargo space shall be measured immediately before any opening action of the hatch covers.

If the hydrogen concentration is greater than 1% (> 25% LEL) by volume, all appropriate safety precautions in conformity with the procedures provided by the shipper or the recommendations of the competent authority shall be taken.

If in doubt, expert advice shall be sought.During precipitation, all cargo operations shall be suspended and holds containing cargo shall be closed. Monitoring for hydrogen of those holds containing cargo shall be resumed.