November 2, 2016

Fire at insecticide factory injures 8

News reports indicate at least eight persons have been injured in a fire at Hndustan Insecticides plant in Kerala. The fire is attributed to carbon disulphide.
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Corrosion Induced Explosion of a High-Pressure Fire-Extinguishing Gas Cylinder

Thanks to Mr Satya Subrahmanyam DGM, EHS, Coromandel International Limited, for sending a link to the article Corrosion Induced Explosion of a High-Pressure Fire-Extinguishing Gas Cylinder in the Journal of Failure Analysis and Prevention -October 2014, Volume 14,Issue 5,pp 564–568 by Yong Jiang,Jian-ming Gong,Peng-jie Tang.
 The abstract of the article mentions "The failure of a high-pressure fire-extinguishing cylinder was investigated. Failure was induced by internal surface corrosion and stress corrosion cracking (SCC) due to condensation of carbonic acid. In internal surface, especially the area near the bottom of the exploded cylinder, severe corrosion was characterized by local pits. SCC initiated from these local corrosion pits was observed by metallurgical analysis. Microstructure of the failure cylinder near the internal surface consisted of multiple-banded structure and the banded structure could accelerate local corrosion initiation and propagation. The corrosion products built up on the fracture surface were primarily ferrous carbonate (FeCO3). The determination of moisture in fire-extinguishing gas was also examined."
Be careful of your CO2 extinguishers. Traces of moisture which can get in during refilling can cause the formation of carbonic acid and cause corrosion.


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November 1, 2016

Inadvertent mixing incident causes chlorine cloud

More than 100 people were treated for respiratory problems after an inadvertent mixing of chemicals caused a large gas cloud at a plant in Kansas, USA. The two chemicals involved in the spill were identified as sulfuric acid and sodium hypochlorite, which mixed to create a chlorine cloud.
Are you training personnel on the inadvertent effects of mixing of chemicals?

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October 24, 2016

Caustic soda handbook

PPG industries, as part of their Responsible Care initiative have published a very good safety handbook on Caustic soda. You can read it in this link.


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October 21, 2016

Toxic Warehouse Fire In Maywood Out, But Evacuees Still Can't Go Home

Though this incident occurred in June, there are lessons to be learnt in emergency planning and response.

Toxic Warehouse Fire In Maywood Out, But Evacuees Still Can't Go Home: Crews are now making sure there are no lingering health risks before letting the rest of the evacuees return home.


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October 10, 2016

Van explosion due to epoxy resin

A van explosion and fire in Chelmsford in UK has been attributed to a self-combusting epoxy resin which the van was transporting. Understand the hazards of chemicals by reading the MSDS.
Read more at http://www.essexlive.news/chelmsford-van-explosion-pictures-show-devastation-on-city-centre-road/story-29782245-detail/story.html#lfd47Y66JXsfjDiu.99


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September 23, 2016

China averaged 29 chemical accidents per month so far this year - Greenpeace

China averaged 29 chemical accidents per month so far this year - Greenpeace: Beijing, 21 September, 2016 - 232 chemical-related accidents occurred in China from January to August 2016, an average of 29 per month, according to Greenpeace East Asia’s ‘Chemical Accident Counter’. The accidents caused 199 deaths and 400 injuries. The findings demonstrate the lax management of China’s chemicals industry, the world’s largest. In addition, preliminary findings from Greenpeace East Asia’s chemicals industry distribution mapping shows a worrying correlation of facility location and population density, as well as proximity to ecologically sensitive areas. Greenpeace calls on the Chinese government to radically overhaul the current chemicals management system and introduce greater transparency.


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September 21, 2016

Bomb Squad: How Cops Safely Move Explosives

Bomb Squad: How Cops Safely Move Explosives

Interesting fact about ""Total containment

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September 16, 2016

How many people die at US oil refineries each year? - EHS today

An article published in 2015 in EHS today gives the number and reasons for accidents in US refineries till 2015. An interesting statistic from the article is "At least 64 people died at refineries in the 10 years before the BP explosion. At least 58 people have died since March 23, 2005". Read the article in this link.

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September 13, 2016

Ball valve wrongly fixed causes an incident

A propane gas release took place during the opening of a flange on the downstream side of a ball valve on a propane pipeline.The ball valve was installed in the wrong direction, so that the cavity vent released the flow to the down stream side rather than to upstream side as intended. The incident occurred when vapor was released when the flange bolts on the downstream side of the ball valve were loosened. Personnel arrested and stopped the release of propane vapor after tightening the flange with full bunker gear and self contained breathing apparatus.

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September 9, 2016