Posts Tagged ‘ piping line ’

Storage Tank Cleaning Safety

Storage tank cleaning safety is the most important aspect that needs to be considered deeply before doing tank cleaning work. This applies for all storage tanks. In addition, special consideration should be given for tank that is used for storing highly flammable and toxic chemicals.

The following tank cleaning safety tips will help you preventing work accident because of doing this work. Please read those tips carefully and improve your preparation when you find that you have left something.

But, my very first recommendation is to read MSDS or material safety data sheet of chemical contained in the storage tank. Make sure that you have understood precisely about all aspect associated with that chemical. (more…)

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List of Safety Precautions for Shutdown Activities of Chemical Plants

safety precautions for shutdown activities of chemical plantsThere are two kinds of chemical plant shut down, i.e. planned shutdown and emergency or unplanned shutdown. An example of planned shutdown is as preparation for Turn Around or yearly preventive maintenance programs. Emergency plant shutdown can be triggered by many factors, such like electric power failure, machinery failure, instrumentation trouble and many more.

In both shutdown cases, there are safety precautions for shutdown activities of chemical plants that need to be taken into account. Such safety precautions are required to prevent potential hazards that commonly appear during plant shut down.

In fact, many people may underestimate chemical plant safety in shutdown condition. Of course there may no pumps running, no reactions occur or production process. But various potential hazards such as over pressure, fire and explosion still exist, which could present real danger to the plant and people inside it. (more…)

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A Simple Tip for Avoiding Accidental Valve Operation

lock-valve-handle

ball valve

There are many drain valves around the plant site. These valves can be installed at equipments or pipe lines. Generally, they are operated only at certain conditions such as for draining condensate and depressurized equipment or piping line. In this case, we talk about ball valve with valve handle type as shown by the image on left.

However, these drain valves may be operated accidentally, hit by plant operators or misoperation, which potentially creating an emergency situation. As an example, if the drained material is highly flammable liquid. (more…)

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Confined Spaces Definition

confined-spacesIn this post, we will talk about confined spaces definition. After reading this post, it is hoped that you could easily recognize confined spaces in the plant site and provide adequate hazard control against confined spaces hazards.

By definition, confined spaces mean spaces that are large enough spaces where workers can bodily enter and perform assigned works. Confined spaces, which can easily found in chemical plant site, at least have the following characteristics:

a. Have limited or restricted openings/ways for entry and exit.
b. Not designed and purposed for continuous workers occupancy.
c. Have poor natural ventilation.

According to the above definition, we should be able to identify all of the confined spaces exist in the plant site. And I believe we can easily identify them. Below are confined spaces that are commonly found in chemical plant site. Just add them through comment column if you would like to add another one and share with other readers

1. Solvent tanks
2. Pressure vessels
3. Boiler
4. Reaction towers
5. Product tanks
6. Gas holder
7. Absorber column
8. Kiln
9. Calciner
10. Resin exchanger column
11. Large piping line
12. Bulk chemical container

I have many experiences working in confined spaces during my assign work in chemical plant site. Storage tanks, pressure vessels and reactors are some of confined spaces that I had entered. Special precautions have to be fully given during work in confined spaces, otherwise accident will probably occur.

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