Natural gas pipelines are under high pressure but not all sections of the pipeline are rated the same. Specifically, there is an area called the Specification Break which is defined as an area where high-pressure piping transitions to a lower pressure rated section. Those areas are particularly vulnerable to ruptures or fissures and need to be monitored.
Rather than buying an expensive and complex safety PLC, look to the STA Functional Safety Trip Alarm as your Safety Instrumented System logic solver. You can utilize three STAs in a 2oo3 voting scheme to initiate an emergency shutdown when a rupture or leak occurs at the Specification Break. Similarly, you could do the same for the temperature. The STA is SIL 2/3 capable, approved by exida and rated Class I Div 2/Zone 2.
Key attributes:
- exida approved SIL 2/3 capable logic solver
- Simple PC or push-button programming
- Relays wired together to create simple 2oo3 voting logic
- See this product in the Online Catalog