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RightShip Guide

THE DEEPDRAFT · RIGHTSHIP PREPARATION

Oxygen depletion and adjacent-space hazards

RISQ 8A.17Section 8A · Cargo Operation: Solid Bulk Cargo other than GrainSource marking: V

Applicability: Section 8A covers solid bulk cargo other than grain. Apply the cargo-specific conditions and vessel limitations in this entry.

What is being checked

Personnel recognise unsafe atmospheres and control entry.

Ready on board

0 / 6 checked

Check the vessel’s actual procedures, equipment and records against these points from RISQ 3.2.

Have officers and crew explain oxygen depletion, toxic emissions, self-heating and corrosive hazards of the carried cargo, including changes when wet.Apply entry precautions to holds and adjacent spaces during inspections, before loading and after discharge as relevant.For emergency entry, the source requires trained personnel with SCBA and protective clothing under a responsible officer’s supervision.Recognise source examples including vegetable/forest products, oilseed residues, wood, fibres, fishmeal, guano, ores/concentrates, coal/charcoal, DRI, dry ice and metal wastes/turnings.For DRI, identify the exact applicable schedule; do not treat Types A, B, C and D as interchangeable.For DRI(D), recognise combined Group A/B risks and the source’s emphasis on hydrogen measurement/control through surface ventilation.

Practice questions

Preparation prompts derived from this entry, not an official inspector interview script.

1Does a hold become safe immediately after cargo discharge?

No. The source stresses precautions before loading and after unloading, including adjacent spaces.

2Can a cargo be reassigned to DRI(D) simply because DRI(C) is wet?

No. Identify and meet the actual cargo schedule; the source’s descriptive comparison is not permission to relabel cargo.

Where a finding may arise

Missing evidence or defects inconsistent with the checks above may prevent a satisfactory answer. These are preparation concerns derived from the question, not explicit additional finding criteria or reported past observations.

Past observations for practice

Anonymised reports, manually reviewed before publication. These are reported experiences, not additional inspection requirements.

No reviewed observations have been added for this entry.

Share an observation for private review

Remove vessel, company and inspector names, report numbers, exact dates and confidential information. Do not paste a complete inspection report.

Source clarification

The PDF describes DRI(C)’s 0.3% moisture cap and DRI(D) by-product fines with moisture at least 2%, introduced in the cited 2025 context. It provides no authorisation for the intervening range. Its example list includes hazards beyond oxidation; dry ice, for example, should not be read as an oxidation mechanism. This summary is not an entry/rescue procedure.

References and source status

RightShip Inspection Ship Questionnaire, November 2025, version 3.2. Section 8A, page 118, reference 8.17.

The explanation, checklist and practice answer derive from the supplied questionnaire. Reported observations are separately contributed and manually reviewed; they are not official RISQ guidance.

Independent DeepDraft preparation guide, based on the supplied RISQ 3.2 questionnaire. Not an official RightShip product or inspection report.