Posts Tagged ‘ hot work ’

A Must Have List of Safety Inspection Checklist

Safety inspection is a regular safety job that is purposed to ensure that equipments, tools, work conditions, work area, plant facilities and so on have already met minimum safety requirements. It is carried out in order to detect any safety deficiencies as early as possible so that accident can be avoided.

Successful safety inspection requires reliable tool that’s a checklist. Safety inspection checklist lists up inspection items that need to be conformed. Such checklist is main reference for safety inspection job. With it, safety inspection will obtain consistent results.

Generally, safety inspection checklist can be obtained from equipment manuals, operation manuals, safety standards, expert advises and experiences. Ideally, you have all the required checklists. However, some of you may not know what kinds of safety inspection checklists are required in your plant site.

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Facts You Should Know About LEL Monitor and LEL Meter

LEL monitor or combustible gas monitor is a very vital aspect in hot work safety. Failure in doing accurate LEL monitor will bring to a catastrophic condition. The same condition will also happen when you use improperly calibrated LEL meter or LEL detector, which is used to measure LEL percentage of combustible gas or vapor in the atmosphere.

Before doing LEL monitor or operating LEL meter, you should know exactly the following facts. They will help you how to do LEL monitor properly. (more…)

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Again, Another Hot Work Related Accident Was Happened

Yesterday morning (9/11), a hot work related accident was happened at Dupont’s Yerkes plant on River Road in Tonawanda, US. In that work accident one contractor worker was killed and another worker was injured.

accident-at-workThe accident was happened when two contractor workers were welding on a 10,000 gallon chemical storage tank. The tank exploded during the welding work. The tank is usually used to store vinyl fluoride.

According to Dupont official, the chemical storage tank was emptied and cleaned up for several times to make sure it is safe to do welding work. However, some chemical reactions took place when the welding work was in process and caused the chemical storage tank exploded. (more…)

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Chemical Storage Tanks – Safety Tips

chemical-storage-tankThe explosion on chemical storage tank at Packaging Corporation of America, Tomahawk, Wisconsin, on July 29, 2008, which killed three people, has shown how chemical storage tanks could put hazard into reality.

The above accident did not represent the entire potential hazards associated with the presence of chemical storage tanks in a chemical plant. In addition, the condition become worst when chemical stored in the chemical tanks are flammable, combustible, corrosive or even toxic.

Because chemical storage tanks present in all chemical plants, improvement of their safety is very important. That’s why this article is written. (more…)

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Hot Work Permits and Dangers of Hot Work

Chemical Safety Board US released a safety video about the dangers of hot work recently. In that video, some real cases of chemical plant accidents caused by hot work were presented.

This video shows the importance of hot work permits that have to be got before hot works can be conducted at site. We will see how fire and or explosion happened when hot works were being conducted.

Chemical Safety Board would like to emphasize how to do correct preparations with correct methods prior to hot work execution. Complete hot work permits could eliminate hot work hazards. (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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Understanding LEL of Common Combustible Gases

by Lukman Nulhakiem

LEL-of-common-combustible-gasesThere are many common combustible gases found in chemical plant. These combustible gases have one similarity. They can be ignited when their concentration in air are within their flammability limits.

What are flammability limits? Flammability limits or commonly known as explosive limits are defined as concentration of combustible gas in mixture with air in which they can be ignited and exploded in the presence of source of ignition.

The lowest concentration of a combustible gas in mixture with air where it still can be ignited is called by Lower Explosive Limit (LEL) or Lower Flammable Limit (LFL). Whereas, the highest concentration of a combustible gas in mixture with air where it still can be ignited is called by Upper Explosive Limit (UEL) or Upper Flammable Limit (UFL). (more…)

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