Confined Space Safety Quiz

Confined Space Entry

• Water level in the confined space should be below 15 cm (6 in.) before entry.
• A dry metal platform should be available for use if water is present in the confined space.
• Air in the confined space must be checked for explosive gases, fumes, and vapors before entry.
• Oxygen content in the confined space must be checked before entry.
• Carbon monoxide levels must be checked if there has been any burning or products of burning involved.

Mechanical Handling Equipment and Aisles

• Sufficient safe clearance must be ensured when using mechanical handling equipment in aisles and passageways.
• Aisles and passageways must be kept in clear and good repair.
• Permanent aisles and passageways should be appropriately marked.
• Materials stored in tiers should be stocked, blocked, interlocked, and limited in height.

Storage Areas

• Storage areas must be kept free from accumulations of materials to avoid hazards.
• Vegetation control should be exercised in storage areas when necessary.
• Clearance signs should be provided to warn of clearance limits.
• Derail and/or bumper blocks should be installed on spur railroad tracks to prevent rolling cars from contacting other cars or entering work areas.

Openings and Pits

• Manholes, tank openings, or other openings left unattended should be protected by barricades and warning signs.
• At night, unattended openings should be protected beyond barricades.
• Covers and/or guardrails should be provided to protect personnel from hazards of open pits, tanks, vats, and ditches.

Hazardous Substances

• The process or operation involving hazardous substances can be carried out in an air-tight enclosure to prevent personal contact with harmful substances.
• If airtight enclosures cannot be used, harmful substances should be controlled by removing them at their point of origin.
• Warning labels on containers of hazardous substances should be in rectangular shapes.
• Markings on labels should be in black on white background.

Labelling and Testing

• Manufacturers are primarily responsible for correctly labelling containers of hazardous substances.
• The atmosphere of workrooms should be tested for hazardous substances annually.
• Ventilation and exhaust equipment should be inspected and tested periodically.
• Cleaning of floors, walls, and equipment in workplaces with toxic substances should be done daily by wet brushing or sweeping.
• Workers exposed to irritating or toxic substances should promptly report any physical complaints.
• The employer should maintain accurate records of employee exposure to potentially toxic materials for legal requirements.