6 Common Mistakes Made in Safety Valve Installation

There are many safety equipments used for releasing or controlling over pressurization in chemical plant operation. One of the most common types is safety valve. Safety valve prevents equipment and piping from damage due to over pressure by releasing certain amount of fluid into the atmosphere.

Safety valves are installed on pressure vessels or high pressure pipe line. They serve as protecting devices. However, because of improper installation, safety valves could do nothing to protect the equipment from over pressurization. So, it is very important to avoid common mistakes made during safety valve installation.

Improper installation of safety valve could endanger plant equipments as well as safety of workers and people inside plant site. You have to know common types of those miss-installations. Here are six common mistakes made in safety valve installation.

1. Safety valve is not mounted vertically.

2. Block valves are installed at the upstream and or downstream of safety valve.

3. The inlet pipe size is smaller than connection size of the safety valve.

4. A cap or plug is installed at the vent line.

5. The diameter of outlet pipe is smaller than the safety valve outlet.

6. The discharge outlet is not located at safe distance that could harm workers’ safety and health. The vent discharge should also be considered to be far enough from ignition source if the discharging material is combustible or flammable.

The above common improper practices of safety valve installation must be avoided. So, that safety valve as pressure releasing device is fully function. All pressure vessels and pressurized facility remain safe.

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