Archive for the ‘ Safety Tips ’ Category

Taking Notes From Middletown Power Plant Explosion

Middletown power plant exploded on last 7 February, when natural gas vent operation was being done. The accident caused at least 6 people died and several others injured. Several similar accidents had also occurred in the past.

In the Middletown power plant explosion, there were some important notes that we could take whenever we do similar operation. Chemical Safety Board said Middletown explosion was due to lack of safety measures. (more…)

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Hydrostatic Pressure Test Safety Checklist

hydrostatic-pressure-testHydrostatic test is used for confirming mechanical integrity of installed pressure vessels and pipe lines. It has to be completed before putting the pressure vessels and pipe lines in use.

According to ASME Section VIII Division I, hydrostatic pressure is conducted at the pressure of 1.5 times design pressure. If a vessel is design for holding 1.0 kg/cm2.g pressure, the hydrostatic pressure test has to be done at 1.5 kg/cm2.g. (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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15 Preventive Measures against Carbon Monoxide Hazards

Because carbon monoxide is odorless and colorless, many workers in the plant site do not realize its existence in the workplace. Thus, preventive measures hold fundamental safety function in order to reduce carbon monoxide generation, avoid concentration buildup, alert workers about its existence and prevent carbon monoxide poisoning.

You may have established some preventive measures against CO. But the list below may give you another idea for completing hazard controls against CO. (more…)

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Safety Tips on Compressed Gas Cylinders

compressed-gas-cylinders-safetyCompressed gas cylinders have to be handled properly. Otherwise, associated hazards such as fall, fire, explosion or hazardous gas leakage may happen. That’s why a safety guide on compressed gas cylinders handling is vitally important.

Here are some safety tips on how to handle gas cylinders safely:

  • Compressed gas cylinder should be kept in a special room, fenced and locked.
  • Authorized and trained workers can only have access to the gas cylinders room.
  • Protect gas cylinder against mechanical damage, by using appropriate racks or other means to hold them securely.
  • When the gas cylinder is not used, valve caps should always be in place.
  • To move the gas cylinders manually use sturdy hand trucks, which can hold one or two gas cylinders.
  • Do not handle gas cylinder with electromagnets, ropes or slings.
  • Put appropriate label and symbol on the cylinders, which describes content and pressure.
  • Do not allow cylinders to direct sunshine or expose to high temperature (>52degC).
  • Keep flame away from contact with cylinder surface.
  • Keep flammable materials away from the cylinders.
  • Use suitable piping, valves, fittings and others apparatus for the contained gas and pressure.
  • Make sure we have provided valves, regulators and safety relief devices.
  • Always open cylinder valve slowly to wide-open position.
  • Maintain gas cylinder and its accessories in good condition.
  • Never use defective safety relief device and leaked cylinder. Mark it and separate from the good ones.
  • Separate and mark empty gas cylinders from the stock.
  • Do not accept gas cylinders without clear gas name and good gas cylinder condition.
  • Calculate exactly your compressed gas consumption. It is unsafe to store many compressed gas cylinders for 1 year consumption.

Compressed gas cylinder is a typical source of hazards found in chemical plants. So take it into account when we will do hazard identification task. And the above safety tips are forms of hazard controls.

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