Head space in liquid waste containers should be avoided.

• A. True
• B. Not sure
• C. False
• D. Not applicable

Answer: (C)

Allowing some headspace in liquid waste containers is important to accommodate gas generation and thermal expansion. As liquids can release gases or expand with temperature changes, leaving space at the top prevents pressure buildup that could cause spills, leakage, or container rupture. Therefore headspace should be provided (not avoided) by filling to a safe level according to your facility’s guidelines and using appropriate, vent-caped containment when needed.