What are the two methods used to determine pressure in facility containers?

The correct answer identifies the two primary methods for determining pressure in facility containers: fixed pressure gauges/meters and portable pressure gauges. Fixed pressure gauges are permanently installed on containers or equipment and continuously display the pressure, enabling easy monitoring. These gauges are crucial for maintaining safe operating conditions and ensuring that the pressures remain within specified limits to prevent leaks or other hazardous situations.

Portable pressure gauges, on the other hand, can be used for spot checks or when the fixed gauges are not accessible. They provide flexibility for personnel to assess pressure levels in various containers throughout a facility. Utilizing both types of gauges helps ensure comprehensive monitoring, improving safety and operational efficiency.

In this context, the other options do not effectively represent recognized methods for measuring pressure in facility containers. For example, using valves and hoses does not provide a direct measurement of pressure; rather, they are components of the system that might be involved in managing the flow of materials. Observing temperature changes may offer some information about pressure trends, but it is not a reliable or direct method of measuring pressure. Likewise, visual inspections, while important for overall safety and integrity assessments, cannot provide specific pressure measurements. Thus, the best answer emphasizes the established tools specifically designed for pressure determination.