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March 26, 2013

On line flare cleaning

I read about a online cleaning of a partially blocked flare header. I was wondering what change the refinery made for the flare header to get partially blocked in the first place. See the video and article in this link. PS: This is for information only.

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March 22, 2013

Slurry pump accident

Even a slurry pump when operated dead headed can cause a serious accident. When pumps are operated with their discharge valve closed and no recirculating, the energy will converted to heat. In this incident a slurry pump over pressurized due to superheating of the slurry. Read about the incident   in this link.

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March 17, 2013

Are your contingency plans in place?

A recent fire in the Chennai Airport air traffic control complex due to a battery explosion highlights the how good contingency planning and drills can bring a dangerous situation in control. A Times of India article mentions that "A battery of the uninterrupted power system, that was the third back up for the Advance Surface Movement Guidance and Control System (ASMGCS) or surface movement radar, had caught fire and exploded. The battery system that exploded was immediately isolated from other equipment to prevent damage to sensitive machines. Even as the fire fighting was taking place, a few air traffic controllers were sitting along with their colleagues on the second floor and communicating with pilots of overflying aircraft over high frequency communication system."

Read the full article in this link.



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March 14, 2013

Confined space entry precautions

Reading a 1987 document about the hazards of confined spaces indicates how relevant it is even today. Old is gold!
Read it in this link. 

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March 11, 2013

Ammonia leak from plant

An incident where a safety valve in an ammonia plant lifted and discharged ammonia to the atmosphere has been reported. Check where your ammonia safety valves discharge. Vent stacks which may have been built by the designer may not be the appropriate solution as the population around the plant may have increased. Read about the incident in this link.


Contribute to the surviving victims of Bhopal by buying my book "Practical Process Safety Management"