Which of the following is required when attaching a gauge set to check system pressures in a laboratory setting?

• A. Heating the system to increase pressure before attaching the gauge set
• B. Opening all system valves before attaching the gauge set
• C. Using bare hands to ensure a tight connection
• D. Wearing appropriate personal protective equipment such as safety goggles and gloves

Answer: (D)

Verified step by step guidance

1. Understand the importance of safety when working with pressurized systems in a laboratory setting. Before attaching any gauge set, it is crucial to protect yourself from potential hazards such as chemical exposure, high pressure release, or mechanical injury.
2. Recognize that heating the system to increase pressure before attaching the gauge set is unsafe and unnecessary, as it can cause unexpected pressure surges and increase the risk of accidents.
3. Know that opening all system valves before attaching the gauge set can lead to uncontrolled release of pressure or hazardous substances, which is dangerous and should be avoided.
4. Avoid using bare hands to ensure a tight connection because this can expose your skin to harmful chemicals or hot surfaces. Instead, use appropriate tools and techniques to secure connections safely.
5. Always wear appropriate personal protective equipment (PPE), such as safety goggles and gloves, to protect your eyes and hands from potential hazards when attaching a gauge set to check system pressures.