Today, we’re going to talk about the 3 industrial Control And Safety Systems. Of course, have an industrial system is of the utmost importance these days. The goal of Control And Safety Systems is to protect the environment, industrial plants, and, undoubtedly, humans.
It’s always best to make sure that a company is following a system and is performing within the allowed control margins.
3 Types Of Industrial Safety Systems:
Basically, there are 3 types of the industrial safety systems:
- PSS (Process Shutdown System or Process Safety System).
- SSS (Safety Shutdown System).
- Safety Spray Shields.
The first 2 safety systems are the main ones. However, the third system’s goal is to act as a barrier and contain the spray out of gases and oils from pipes, flanges, and valves.
Let’s talk about the SSS since it’s really important…
Firstly, you should know that the safety shutdown system (SSS) is divided into:
- ESD (Emergency Shutdown)
- EDP (Emergency Depressurization) systems.
In case of an emergency, the SSS will shut down the facility in a safe state. Consequently, this will ensure that the safety of the people, the asset, and the environment.
The SSS will control all the outputs and inputs related to ESD (emergency shutdown) functions.
The best part is that these safety systems could be managed from the main gas and fire systems.
The ESD (emergency shutdown):
Now, the ESD is categorized into different 3 levels; which are:
Level 1: Manages the shutdown of the plant area. Level 1 can activate level 2 if needed. You should know that level 1 can only be activated from the main control in charge of the plant area.
Level 2: Any individual ESD zones are shut down and isolated. Also, sometimes the activation of EDP is made if needed.
level 3: Concerns the “liquid inventory containment”.
Sometimes, the ESD process can cause the accumulation of flammable liquids or fluids. So, to avoid any undesired hazards, these liquids must be released to prevent any pressure increase in piping and vessels.
As a result, EDP (Emergency Depressurization) is activated and used along with the ESD to release any trapped fluids in a safe manner and to a safe location.