At what pressure is the rupture disc typically designed to burst?

• A. 5 psig
• B. 10 psig
• C. 15 psig
• D. 25 psig

Answer: (C)

The rupture disc is typically designed to burst at a pressure point that provides a safety mechanism to prevent equipment failure or catastrophic release of refrigerants. A common standard for many refrigeration systems is indeed set around 15 psig. This pressure allows for a threshold where the disc will rupture if the system experiences pressure beyond a safe limit, thus helping to protect the integrity of components and ensuring safe operation.

The choice of 15 psig as the burst pressure aligns with safety regulations and guidelines in the industry, ensuring that the disc activates before reaching potentially dangerous pressure levels. This design consideration helps to minimize risks associated with overpressure conditions, particularly in systems containing refrigerants.

In contrast, pressures like 5 psig, 10 psig, or 25 psig do not correspond to standard operational thresholds in most refrigeration systems, making them less likely to be appropriate choices for rupture disc design within this specific context. Therefore, having 15 psig as the rupture point is critical for effective safety measures and regulatory compliance.