Accidents / Incidents / Near misses

[sri2cool4u]

Hi Guys,

As we all know, safety is a day to day learning process, and is best learnt by sharing. We have been so good in this forum sharing Safety related information so far.

I thought it would be good for us to share the Accidents / Incidents / Near misses experienced in their related industry and will work on Investigation through the experience of experts in this forum. This way I think we will be able to get learn, understand and mitigate such an Accidents in our environment.

To start with I thought I would start with one of the Incident that I had experienced in my work experience in one of a chemical industry.

A hydrogenator reactor was filled with solvent (Ethanol) and catalyst (through a catalyst charging pot on top of the reactor) and pressurised with hydrogen upto a pressure of 30 barg. As the hydrogenation reaction (absortion of hydrogen through the solvent) is faster in the initial stages, it took 30 min to stabilise the hydrogen pressure in the reactor. The pressure in the reactor was monitored through the DCS. Suddenly the hydrogen leaked through the catalyst pot and was ignited (hydrogen fires are invisible). immediately the hydrogen was depressurised using nitrogen and the hydrogen fire was put off by the application of fire fighting systems.

This is just a brief note on the incident, If anyone is interested to proceed with this incident or come with their own incident from their industry they can.

Let us share, investigate, understand and mitigate.

Everyone is free to share their own perspective

Regards

Sri

[kamalnashar]

thanks

[ivanilych]

You can sign up to Chemical Safety Board (

[link Point to another website Only the registered members can access]

[sri2cool4u]

Hi Ivanilych,

Thank you for your references.

What we are trying to do here is make people come out with the accident / incident / near missed that they face in their industry and others to investigate and understand the problem to ensure it is not repeated in other places.

Anyhow thank you for your reference

[luckyankit]

Dear All,

While surfing net i found these usful article for the current running topic.

Rail Tank Car Collapse

[link Point to another website Only the registered members can access]
Possible Causes of Accident on a Project/ Process

[link Point to another website Only the registered members can access]

Thanks & Regards
Ankit

[sri2cool4u]

Hi All,

Hope some of you would have come across the Buncefield Incident. This did give a breakthrough for Explosion modeling and the differences in the present modelling and design of oil storage facilities.

For those who are not aware of, here is the link which gives the details of the incident investigation, recommendations raised etc . . .

[link Point to another website Only the registered members can access]
Regards

[saleh_hoydi]

Dear All,

I'm already joint to this useful forum, and it's a good idea Sri2cool4u come over it. And it was not bad idea that the participated friends posted some releated links and thank for both of them. In my opinion, it would be better for us to share A / I / Near miss's that we faced in our industry with our own investigation and comments releted, for sure we cant forget to post pictures and/or illustration for the A/I/N. I think that's what Sri meant?.

Thanks.

[sri2cool4u]

You are absolutely right soleh, that is how thinks can be learnt the easier and knowledge can be shared. More over this could help us prevent the similar hazard situation in where we work day to day

Regards

[Mohamed]

What happened?

􀂃 The two welders were Welding the 36'' final tie
from piping system to exchanger (1B vessel 1E-
0604).
􀂃 After completion of external root and hot pass
weld on piping connection to vessel (1B vessel 1E-
0604), one welder made an unauthorized confined
space entry into the vessel to check welding root
pass. He was thought that the argon purge was off
but one valve was not completely closed and one
purge line remained on. This resulted in the argon
atmosphere being sustained within the vessel, in
addition to the removal of the purge plug which
increased the concentration of argon in the vessel
as one argon hose was still on and was now leaking
into the vessel directly. So the first welder
collapsed, the second entered to affect rescue, but
unfortunately both welders were overcome by lack
of oxygen and collapsed inside the vessel.

ßÇä ÇááÍÇãÇä íÞæãÇä ÈÚãáíÉ ÇááÍÇã áÎØ 36 ÈæÕÉ æ åæ ÂÎÑ ÇáæÕáÇÊ

.(1B vessel 1E- ÇáÎÇÕÉ ÈÇáãÈÏá ( 0604
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ÃÏÊ Åáí ÒíÇÏÉ äÓÈÉ ÛÇÒ ÇáÃÑÌæä Úáí ÍÓÇÈ ÛÇÒ ÇáÃÂÓÌíä äÊíÌÉ æÌæÏ
ÃÍÏ ÎØæØ ÇáßÓÍ ÈÇáÃÑÌæä ÊÕÈ ÈÔßá ãÈÇÔÑ ÏÇÎá ÇáæÚÇÁ.
ããÇ ÃÏí Åáí ÓÞæØ ÇááÍÇã ãÛÔíÇð Úáíå ÈÏÇÎá ÇáæÚÇÁ æÞÇã ÇááÍÇã ÇáËÇäí
ÈÇáÏÎæá æÑÇÁå ÑÛÈÉ ãäå Ýí ÇäÞÇÐ Òãíáå ããÇ ÃÏí Åáí ÓÞæØå ÃíÖÇð Ýí
ÇáÍÇá.

MORE DETAILS IN ATTACHED FILE

[splendor]

why your are pointing finger, this the first mistake for accident investigation ...

[safetyuser]

Hi Guys,

As we all know, safety is a day to day learning process, and is best learnt by sharing. We have been so good in this forum sharing Safety related information so far.

I thought it would be good for us to share the Accidents / Incidents / Near misses experienced in their related industry and will work on Investigation through the experience of experts in this forum. This way I think we will be able to get learn, understand and mitigate such an Accidents in our environment.

To start with I thought I would start with one of the Incident that I had experienced in my work experience in one of a chemical industry.

A hydrogenator reactor was filled with solvent (Ethanol) and catalyst (through a catalyst charging pot on top of the reactor) and pressurised with hydrogen upto a pressure of 30 barg. As the hydrogenation reaction (absortion of hydrogen through the solvent) is faster in the initial stages, it took 30 min to stabilise the hydrogen pressure in the reactor. The pressure in the reactor was monitored through the DCS. Suddenly the hydrogen leaked through the catalyst pot and was ignited (hydrogen fires are invisible). immediately the hydrogen was depressurised using nitrogen and the hydrogen fire was put off by the application of fire fighting systems.

This is just a brief note on the incident, If anyone is interested to proceed with this incident or come with their own incident from their industry they can.

Let us share, investigate, understand and mitigate.

Everyone is free to share their own perspective

Regards

Sri

Absolutely

Maybe most of you already know this up-to-date website, anyway

Step Change in Safety

[link Point to another website Only the registered members can access]

regards

[goldmarlboro]

thanks