May 1, 2014

Hydrogen from CO2 and sunlight

An interesting article in the Times of India mentions the experiment of producing hydrogen using carbon dioxide and sunlight. Worth a read in this link.


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April 27, 2014

Two lab analysts die

Further to my earlier post of an accident due to a naphtha fire in an ammonia plant , it is sad to note that two lab analysts who suffered 80% burns have died in a hospital in Chennai. This incident highlights the dangers which personnel face when dealing with hazardous chemicals. They do not give you a chance. The reason for the incident is being investigated. I had worked as a shift in charge at this plant 30 years back. The place where we used to collect naphtha samples regularly was at the hydrodesulfurisation sections ( primary and secondary) outlet.
Look at all you sample collection procedures and whether all hazards have been identified. Train lab personnel to recognize these hazards and report them to plant personnel.


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April 25, 2014

Simultaneous jobs and their dangers

Many times, during an annual shutdown of a chemical plant, many jobs will be taking place and there is pressure to complete the  jobs on time. Be careful during this period as there may be a tendency to overlook some of the hazards due to simultaneous jobs. Your regular HIRA (hazard identification and risk assessment) may not be adequate and some risks due to nearby jobs may be skipped. Before every turnaround ensure that a special training is given to the people who conduct HIRA on how to identify hazards from simultaneous jobs.


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April 22, 2014

Are you travelling in a confined space?

In a lighter vein........
I am sure many of you will be flying frequently on official visits. Though planes are designed to be evacuated very quickly during an emergency, I often compare them to flying in a confined space! I have tried to correlate the system in chemical industries used for confined space entry to that of flying in a plane:

Confined space entry permit = boarding pass
Man watch = flight stewards
24 V lighting = emergency escape path lighting
Air blower system for ventilation = cabin air pressurisation system
Oxygen monitoring = oxygen masks drop down when oxygen is less
Rescue plan = emergency exits and chutes
Chief emergency and rescue controller= pilot!


I am sure you will be more comfortable when u fly next!! All the best!


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April 14, 2014

Accident at chemical facility at Tarapur MIDC

Close on the heels of the accident at a chemical facility in Andhra Pradesh, news about a series of explosions in a chemical facility in MIDC, Tarapur has been reported. No causalities have been reported. Read about the incident in this link.
 
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April 12, 2014

Chemical factory blast kills two in Andhra Pradesh - The Hindu

Chemical factory blast kills two in Andhra Pradesh - The Hindu



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Fire in ammonia plant injures 7

I felt sad to read the news about a naphtha fire in the ammonia plant of Madras Fertilizers which injured two people seriously. A total of 7 people were reported injured. Read the news article in this link.

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April 11, 2014

Mists of flammable material can be dangerous

In my career as a process safety consultant, I have investigated some fires caused by fine spray of a flammable  liquid. The most common include pressurised lube oil leaking from a defective hose or hose joint and the fine mist catching fire.
Read a good reference of various fire incidents caused by mist fires in this link.


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April 7, 2014

Sulphuric acid spill/leak incidents

Sulphuric acid leak/spill incidents continue to occur. Read about two incidents in these links
Accident 1
Accident 2

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April 5, 2014

PSM internal audit survey results

My thanks to the 22 persons who participated in the survey. The survey results are as follows:

  1.  Over 65% of repsondents say that their PSM internal audit is carried out once in 6 months
  2. All respondents say that they audit all their elements at a time
  3. 30% of respondents replied saying that they audit process safety culture also
  4. 50% of respondents use a rating system for the PSM internal audits
  5. 85% of respondents replied saying that they feel the PSM issues are coming out during the audits
  6. 60% felt that management was not viewing the PSM internal audits seriously
  7. 85% felt that technical competency for conducting PSM internal audits needs improvement
  8. 50% of the respondents say they classify audit findings as per risk.
 
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LNG tank leak incident

An incident at a a large LNG storage facility in Washington state in USA when an explosion in a "processing vessel" sent sharpnels into an LNG storage tank, puncturing it,has lessons in Quantitative RIsk Assessment and assumptions made.
The graphic leak of LNG from the tank ( which is similar to liquified ammonia tanks) but stores LNG at a temperature of -160 Deg C is shown in the video in a news report. The tank also appears leaking at two different places on the outer shell. The wind direction has helped in not igniting the vapour leak.

Link 1 - video
Link 2- news report


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April 3, 2014

The GM recall - what are the lessons in process safety culture?

You must be reading the news about the recall of 2.6 million cars GM made due to a problem in the ignition switch which could shut off the car while driving, disable the airbag, power steering and anti lock brakes. However it is reported that GM took 10 years from the time the problem was discovered and recalling the cars to fix the problem. Meanwhile 13 deaths have been attributed to this.
 In the ongoing Senate hearing, the recently appointed CEO of GM Ms Barra told the subcommittee, "that the new GM is more "focused on the customer" compared to a "cost culture" years ago at the automaker."

What is the commonality between a giant automotive maker and PSM? The answer is "cost culture". Beware of the cost virus in your organisation's PSM system.It can cause deadly accidents.
  
Read about the problem and recall in this link
Read about the testimony of GM Chief in this link

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April 1, 2014

Uzbek fertiliser plant acid spill investigation

In late February 2014, a sulphuric acid spill from a storage facility in a fertiliser plant in Uzbek was reported. Now the investigation reveals that it was a seam failure of the tank. Read the article in this link


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March 29, 2014

Role of HR in Safety

Mr M.K.Rao, Executive Director of India Glycols Limited has written a good article on "Role of HR in Safety". You can read the article in this link.  My thanks to him.

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March 22, 2014

Process safety management internal audit survey

I would appreciate if, for those who are running PSM systems, you answer this survey (8 questions). Results will be published in the blog later.
Take the survey in this link.


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March 19, 2014

Fire in chemical unit

A fire in a  chemical unit in Udaipur has gutted the unit. In the pictures in the news report in this link, you can see remnants of barrels that have caught fire. Often, plants store chemicals in barrels on roads due to lack of space. This practice is a waiting time bomb. Barrels exposed to heat from a fire can explode violently and  spread the fire rapidly. 

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Confined space accident kills 7

 The Hindu Business Line has reported a confined space accident in a textile mill in Erode where 7 workers lost their lives. Apparently, the accident took place when maintenance work was taking place in a sunken pit in a ETP, when a valve broke and released poisonous fumes. The would be rescuers ( 6 of them) entered the  pit one by one to rescue the others and died. Please emphasize in your training the importance of rescuers NOT to enter any space for rescue unless they are adequately protected. This incident  is a tragic loss of life
Read about the incident in this link.


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March 18, 2014

When the back up fails........

 When I was working in Saudi Arabia, the 3000MTD gas based methanol plant was operated with state of the art DCS systems. Just before a planned turnaround, instrument personnel were working with some control room underfloor cables when, by mistake, all power to the DCS displays were lost. It was restored after 30 minutes. The plant parameters were maintained throughout the upset without any safety issue as the controllers in auto were doing their job. However a case study presented in 2012 by Shri KC Tripathy and others of NTPC shows how safety hazards cropped up during "complete and simultaneous DCS failure in two 500MW units"
The case study mentions among other useful learnings, the following:
"All processors (active and redundant) abruptly rebooted at once. Thereby both redundant network & redundant processor concepts of DCS design were defeated".

 Read the case study in this link.



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March 15, 2014

Common causes of flange leaks

Often flanges are a source of leaks, causing release of hazardous chemicals that may result in a fire or toxic chemical exposure. Read a good article on the basic causes of such leaks in this link.
 

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March 11, 2014

Process safety - voluntary or regulatory?

I read an interesting editorial in the "Record" about the above subject. Worth reading in this link.


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March 7, 2014

Lessons from NASA astronaut "water in helmet" incident

In July 2013, during a spacewalk outside the International space station, an astronaut reported water entry into his helmet. He was asked to get back only after he made three calls saying the water didn’t appear to be from a drinking bag. Later it was found out that the drinking bag was not the problem and a choked filter was the cause of the leak. The NASA investigation report mentions some of the reasons for the incident as inadequate training, the crew members and ground misunderstanding the severity of the situation, and a (false) perception that any water leak is likely due to a problem with the drinking bag. Do not normalize deviations!
Read more: http://www.universetoday.com/109814/as-astronauts-helmet-filled-with-water-he-told-nasa-three-times-it-wasnt-from-the-drinking-bag/#ixzz2uuMFin1Z

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March 1, 2014

Moving scaffolding near HT cables

In 2012, there was an electrocution incident in China, when painters moving mobile scaffolding contacted a 10000 V electrical line. The CCTV video in this link illustrates the dangers of high voltages. It is graphic and not for the faint hearted. See the video in this link.


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February 25, 2014

Case study on fire incident in cooling tower

 Read and share this good case study from Oil Industry Safety Directorate. The recommendations, I think speak for themselves, where the issues were.

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February 22, 2014

Sulphuric acid leak in refinery injures two

A leak from a sulphuric acid pipe in a refinery in USA  has reportedly injured two employees. It appears that workers in the refinery were "afraid" as acid leaks continued to occur frequently. Incidentally, the company has not allowed CSB investigators to pursue their investigation. Read about the incident in this link.


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February 21, 2014

Pneumatic test accident

The dangers of pneumatic testing is again highlighted by an incident where a 335 litre vessel exploded during the test, causing a worker to loose his legs. Read about the incident in this link

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February 18, 2014

Misuse of expansion bellows as pipe supports leads to accident

An incident in a pharma company in the UK where bromine sprayed a worker causing severe injuries has been attributed to the bellows used to support pipe work and also corrosion of the bolts of the bellows. Read the incident and causes in this link


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February 15, 2014

Thumb rules for mechanical seals

Mechanical seal failures cause a hazardous chemical to come out with severe consequences. A very practical rules of thumb for mechanical seals written by Mc Nally (who has 35 years of experience) can be found in this link.


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February 12, 2014

Chemical plant fire -photos

See 27 photos of the fire in this link.
You can see the pool fire also. Worth noticing is the pressure of the water in the fire water monitors which help to keep surrounding equipment cool


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February 10, 2014

Pictures from Chingari Trust

As readers are aware, the proceeds from my book go to the Chingari Trust in Bhopal, who take care of the children affected by the Bhopal Gas Disaster. As humans we often react only when it happens to us. The legacy of Bhopal must never be forgotten. Please see some pictures about the activities sent by the trust












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February 7, 2014

High pressure water jet machine accident

An accident during a high pressure jet machine usage is given in this link

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February 6, 2014

Chlorine leak affects many

A news report mentions about an accident on NH 75  on the Jharkhand UP border caused a truck carrying chlorine tonners to turn turtle, resulting in the bursting of some tonners. More than 100 persons are reportedly affected.It appears that bad road conditions led to the truck overturning.
Read about the incident in this link.


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February 4, 2014

Sulphur dioxide leak incident

In 2001, a release of SO2 gas was triggered when a vehicle hit a power supply pole and caused a power outage. Read about the incident and it's causes in this link.

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Interesting incident from workshop

Am currently attending an Indo US workshop on Science and technology for preventing terrorism. A speaker from the US mentioned an incident involving human factors - a highly secure facility which had three layers of security was penetrated by a group of activists, who managed to penetrate all three layers without being noticed by guards. When the activists reached the  secure building, they tried throwing some stones to attract attention, but the security guards thought that carpenters were working late and ignored the noises. Finally they were detected and apprehended. The incident was captured by video. The speaker highlighted that the guards never anticipated a breach as they thought that the three layer security was foolproof. The guards let their guard down! When people do routine monotonous jobs, there is a tendency to ignore warning signs as they are not alert enough.
The same applies to operators who run complex chemical plants with layers of automation. It is a human tendency to think that automation will always do its job. Make sure your operators are trained in the hazards of over dependence of automation. (automation addiction).


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February 1, 2014

Confined space fatality

One person died when entry was made into a decommissioned submarine without proper atmospheric monitoring. Most probable cause of the accident was oxygen depletion due to rusting inside the decommissioned sub. Many times, we feel that a decommissioned equipment is safer than an equipment that is in service. We let our guard down and then a fatality occurs. Sometimes, new equipment are brought to the site before a turnaround and placed near the unit. They may be nitrogen blanketed and have to be treated just like any vessel in service. Make sure your maintenance personnel understand this.
Read about the accident in this link.

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January 28, 2014

Methane is dangerous - regardless of the source!

 A news report mentions of an explosion in a farm shed with cows, injuring one cow. The explosion was attributed to methane gas from 90 flatulent cows.The cause of ignition was reported to be static electricity. The roof of the shed was blown off!



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January 21, 2014

Toxic gas formation in confined spaces

Confined space accidents due to exposure to toxic gases after entry continues to kill people. Read a warning about how toxic gases can be generated in confined spaces in this link. 


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January 17, 2014

Phosgene leak in plant at Dahej

A phosgene leak at a new toluene di isocyanate plant at Dahej on January 9th has reportedly affected 21 employees with one in serious condition. Interestingly, the company has filed a FIR against the technology provider.
Read about the incident in these links
Link1

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January 13, 2014

The importance of containment

An incident is being reported in the US where a storage tank storing Crude MCHM, consisting mostly of 4-methylcyclohexane methanol developed a hole and started leaking. The secondary containment (dykes) also failed and the chemical entered a river which is the main source of drinking water. 
Maintain your primary and secondary containments.....read about the incident in this link.


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January 8, 2014

Lessons Learned: When Disaster Strikes A Chemical Plant

Lessons Learned: When Disaster Strikes A Chemical Plant

Thanks to Balu (My classmate who is now in the US) for sending this good case study.

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January 7, 2014

Incidents in chemical units in Andhra Pradesh

Andhra Pradesh continues to experience incidents in chemical units.
Read about the recent two fire incidents in this link. 
Read about another incident this week in this link. (Thanks to Mr. Subrahmanyam for the info) 

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Workers suffer chemical burns to face

Workers suffer chemical burns to face

The above incident is a classic case of what will happen if you ignore warnings.

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January 5, 2014

Online leak sealing incident

An incident in a refinery in Belgium in which a bonnet of a steam valve flew open killing two contractors during sealant injection highlights the dangers. Many engineers take on line leak sealing for granted and a quick fix to arrest leaks. Remember on line leak sealing is an inherently unsafe method unless properly engineered. In India a plethora of on line leak sealing agencies have mushroomed offering leak sealing at low cost. Cost should not be the deciding factor while choosing the agency. Check their engineering expertise.
Read about the incident in this link.

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January 4, 2014

Process safety - where are we heading??

I was reading an article on process safety and a new terminology called "peak risk". In the last decade a number of new terminologies and technologies have mushroomed. But I think we have lost our way somewhere. Ultimately, accidents happen due to decisions taken by Management that have an effect on process safety and causes a catastrophic accident. Over a period of years, chemical manufacturing companies have fewer and fewer technical personnel on the board. As long as we do not address this issue, new terminologies and new technologies will only make someone's purse fatter but will not prevent a catastrophic accident!

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January 2, 2014

Welding incident

  Welding incident in youtube ... see the response of the fire watch... do you think it was right or wrong?


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December 31, 2013

Happy New Year 2014!

I WISH YOU AND YOUR FAMILIES A VERY HAPPY, HEALTHY AND PROSPEROUS 2014!

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December 26, 2013

Confined space engulfment hazards

A fatality in a grain bin in a ethanol manufacturing plant highlights the dangers of entry into bins containing material and its engulfment hazards. The victim apparently enetered the bin to clear a choke when the grain began to flow and he was trapped.
Read about the incident in this link.


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December 23, 2013

Laws of process safety

 And now for a bit of humour, I have coined some laws of process safety.....
  • Process safety performance is inversely proportional to the time a plant / maintenance manager spends in meetings!
  • The number of technical persons on the board of a chemical manufacturer is inversely proportional to the chance of a process safety incident occurring
  • The more voluminous your PSM program, the more likely a process safety incident would occur.
  • Managing process safety is no rocket science - it is look,listen and feel (look at what people are doing, listen to people and feel the pulse of the plant)
  • Runaway reactions always happen when the human is around!
  • Process safety management does not require six sigma, it requires stick sigma!


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December 19, 2013

Blast at pharma plant at Tarapur

An explosion and fire has taken place at a pharma plant at Tarapur. Read about the incident in http://www.dnaindia.com/mumbai/report-twin-blasts-rock-tarapur-unit-1937012


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December 16, 2013

Fire in phenol plant in USA

A fire in a phenol plant in the USA has been captured in this video. Read the article in this link.

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December 13, 2013

Static charge causes dust explosion

A man was critically injured when a static charge in an improperly grounded vacuum cleaner which was being used to clean machinery, ignited the dust causing an explosion and subsequent small fire,


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December 9, 2013

Salt water tank explosion

In some places, oil and gas reservoirs are found in porous rock formations that also usually contain significant amounts of saltwater. The saltwater produced with oil and gas must be disposed of in a manner that will not cause or allow the potential for pollution of surface or subsurface waters.. In this incident, a salt water tank exploded and 13 other tanks caught fire. The explosion, which occurred after a truck driver had unloaded the salt water into the tank and was leaving the site. The only victim was the truck driver who offered to help firefighters by getting more water to extinguish the fire. While the truck driver was heading back, he suffered a suspected heart attack.The cause of the explosion is under investigation. But this incident highlights the need to treat all tanks with respect.

Read about the incident in this link.

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December 7, 2013

Changes proposed to OSHA PSM rule

"On Dec 3, 2013 The U.S. Department of Labor's Occupational Safety and Health Administration announced a request for information seeking public comment on potential revisions to its Process Safety Management standard and related standards, as well as other policy options to prevent major chemical incidents. The RFI is in response to executive order 13650, which seeks to improve chemical facility safety and security, issued in the wake of the April 2013 West, Texas, tragedy that killed 15 in an ammonium nitrate explosion. Once the RFI is published in the Federal Register, interested parties may submit comments online atwww.regulations.gov, by mail or facsimile. To view the RFI visithttp://www.osha.gov/chemicalexecutiveorder/OSHA_PSM_RFI.pdf. For more information, visitwww.osha.gov/chemicalexecutiveorder/index.html."

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December 2, 2013

Technology and emergency response

Thermal imaging technology has been around for decades and it's cost has come down, together with improvements in technology. Often they are used to detect hot spots in electrical systems and insulation or refractory hot spots. Now firefighters are using this technology in emergency response rescue. See a you tube video in this link


Today is the 29th anniversary of the Bhopal Disaster. Let us not forget the lessons from Bhopal....

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November 25, 2013

Explosion of acid tank in Fertilizer Plant

 An empty acid tank exploded during maintenance. This occurred in a phosphate fertiliser manufacturing facility in the USA. The lid of the tank apparently flew 100 feet in the air. Two people were injured.There is a lesson from this and other similar incidents - tanks are dangerous, be it empty or full. Follow all proper hot work precautions. Even waste water tanks have exploded during hot work due to the release of gases.

Read about the incident in this link.


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November 19, 2013

Fatality due to gas powered generator

In 2007, a pipeline x ray technician who was developing films in a portable darkroom died due to CO poisoning caused by a gas powered generator. If you use diesel or gas powered generators inside closed spaces, be careful as CO will accumulate. Read the fatal alert in this link.

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November 15, 2013

Fire in Chevron Refinery

Fire in refinery


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Lightning causes tank to explode

A salt water tank containing trace amounts of hydrocarbon exploded in the USA after a lightning strike. The explosion of the tank caused other nearby tanks also to catch fire. This incident highlights the importance of maintaining the integrity of your lightning protection system. Many plant managers do not pay heed to this protection system, thinking it will never happen.
Read about the incident and see a video in this link

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November 8, 2013

Chevron Fire One Year Later - What Will It Take to Prevent Another? - New America Media

Excellent article!

Chevron Fire One Year Later - What Will It Take to Prevent Another? - New America Media

"There needs to be a fundamental shift of the burden of proof that a company is operating safely. Right now, the burden of proof lies with public agencies; they’re charged with playing Sherlock Holmes and trying to find hazardous conditions. What’s needed is to shift the burden of responsibility for safe operation to the plant. They have to demonstrate their competence in health, safety, and environmental performance as a condition of operation. Then a public agency can determine whether the plant is meeting those standards, and whether they’re sufficiently competent or not. That would change things. And, if the whole process is much more transparent and accessible to the public, that would make health, safety, and environmental performance much more compelling to the plant management".

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Structural integrity failure incident

A newly constructed dome for storing iron ore collapsed. Luckily no one was injured. See the pictures and article in this link. The cause of incident is under investigation.

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November 5, 2013

Trevor Kletz passes away

The father of process safety has passed away at the age of 91. Dr Trevor Kletz had authored many books on process safety and also introduced the concept of inherent safety much before the Bhopal disaster. My early working days were spent devouring his well written books and his subtle sense of humour. I  pray his soul rest in peace!

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November 4, 2013

Another view of behaviour based safety programs

I have always maintained the view that behaviour based safety programs will succeed only if top managements behaviour is also observed and corrected. Read an interesting article from a unions perspective in this link. This article should be read by all top management.

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November 2, 2013

HPCL Fire investigation

 According to a Times of India report, the Oil Industry safety directorate has faulted HPCL management for the August 23rd inferno in the cooling tower which claimed 28 lives.The article mentions the following:
"Revealing the lack of precautions taken by HPCL-Visakha Refinery, OISD said that internal pre-commissioning safety audit was done by a multi-disciplinary team of HPCL but the "recommendations/ pending jobs were not completed".
The lapses list
** Management failed to stop commissioning even though several processes remained unfinished
** Nearly 100 personnel were allowed to be present and work at the site during commissioning
** No senior official was available at the site and commissioning activity was left to one supervisor only
** Hazard identification not done and no risk analysis carried out
** Hot job carried out under the supervision of the maintenance department
** Contract workers not told to leave the site before the commissioning of the facilit
  Read the article in this link.

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November 1, 2013

HAPPY DIWALI

HAPPY DIWALI TO ALL MY READERS YOUR FAMILY! ENJOY!!



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COMMENTS ON CHEMICAL PLANT SAFETY & SECURITY RATING SYSTEM


I appreciate the initiative on the new safety and security rating system for chemical plants by the Indian Government and am sharing my comments sent to the Ministry on the new safety rating system:
1.    The initial screening criteria will eliminate many of the existing chemical units in the small and medium scale sector which also handle highly hazardous chemicals.  In such a case, what will be the action? I suggest that Initially, for SME sector, certification to OHSAS 18001 could be made mandatory and the proposed safety and security rating system be applied to MAH units. Later the modalities to extend it to SME sector could be worked out.
2.      In the initial screening criteria, one of the KPI’s is mentioned as “approved and documented PSM system available and implemented”. There is no reference to which PSM model to follow. I suggest that the basic OSHA CFR 1910.119 PSM rule of USA be followed. The threshold limit of chemicals for which PSM system applies could be the same list used in MSIHC rules.
3.    Any rating system is a snapshot of the organisations safety performance. However, in process safety management, top management commitment and technical competency of the people who run the system are important for achieving incident free performance. The proposal for the new safety rating system suggests that organisations with good safety performance will be incentivized. The opposite of this must also be implemented – if an organization that has been rated either 3,4 or 5 star in the new rating system experiences a reportable accident ( as defined in factory rules) after the award of the rating and within the periodicity of assessment, then the rating should automatically be downgraded to “Poor”.  This will ensure continued top management focus. The list of organizations who have been thus downgraded may be publicized on the Ministry of Chemicals and Fertilizers website or on a new website specifically dedicated to the “Chemical Plant Safety and Security Rating system”
4.      In the 19 KPI’s of final assessment, KPI’s 12,13 and 14 (Contractor management, emergency preparedness and response and training and competency) are already covered in the PSM system mentioned in KPI 2. They can be assessed as part of the PSM system.
5.      As the concept of “Occupier” and “Factory Manager” is already legally required for companies, I suggest that both of them be mandatorily assessed in final assessment on how they track PSM performance as well as competency levels to maintain the PSM system.
6.      In the evaluation questionnaire for PSM, in point 2.3, it is asked if QRA/LOPA is done for all operations and recommendations implemented? Instead, the question could be Whether Hazard Identification and risk analysis based on guidelines of IS 15526:2006 has been carried out and recommendations implemented?
7.      Finally, the new rating system will be recognized as unbiased and transparent by the public only if the if the assessment evidences for those organisations that have been awarded “Good, Very Good and Excellent” are posted on the website of the Ministry of Chemicals and Fertilizers or on a new website specifically dedicated to the “Chemical Plant Safety and Security Rating system”
                                                   END
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October 31, 2013

HPCL VISAK REFINERY FIRE INCIDENT INVESTIGATION

An investigation of the cooling tower explosion in HPCL Visak refinery by the joint chief  inspector of factories suggests that "HPCL failed to adopt safety steps"
Read the article in Times of India in this link.

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October 29, 2013

Implementing PSM - do not overdo it!

I often get RFQ's for PSM implementation some of which writes down everything under the earth!
Recently I got one that included occupational health, off the job safety, and customers and products! All these mentioned items are part of the basic necessities BEFORE PSM is implemented. So if you have a doubt in your basic safety do not implement PSM till you get your house in order!



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October 26, 2013

Explosion incident


"On May 8, 2005, a crew of three, a painter , an attendant and a supervisor were in the process of applying a paint/liner product on the interior of a rail tank car in an enclosed shop. The painter was inside the tank car and the attendant was standing on top of the railcar at the manhole. The supervisor had just stepped into his office when a loud explosion occurred. Flammable vapors had accumulated in the tank car and the shop.The attendant was blown from the top of the rail car to the floor of the shop but was basically unharmed' Read details in this link..

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October 23, 2013

Accidents in the lab and process safety

 A recent fatal accident at a lab in a Chemical Plant in the UK highlights the need to understand that process safety also needs to be taken care of in the lab. Some sources are attributing the explosion was caused by the exposure of trimethylindium, a pyrophoric chemical, to the air.
Read more in this link
In another incident in 2008, a 23 year old Chemistry research student died form burn injuries during a lab experiment. A detailed explanation of the incident is given in this link. 

Personnel working in Labs and R & D's need to exercise the same caution, if not more, as they may be working with certain chemicals which may behave differently under different conditions.Process safety should start from the lab....



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October 18, 2013

One dead in LPG road tanker blast

 A LPG road tanker driver died in Mathura when his tanker met with an accident while allegedly avoiding cops who were demanding bribes. Read the news article in this link

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October 15, 2013

Simple properties of chemicals and process safety

The newspapers are full of reports of a dry ice explosion in a restroom in LA international airport. Dry ice or solid CO2 has a property of directly changing into gas from its solid state as it's temperature increases. If the dry ice is kept in an enclosed container, then it exerts immense pressure and can explode the container. The discovery channel has a video in this link which demonstrates vividly what can happen. Worth a see by all plant operators to realise the hazards of chemicals.


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October 12, 2013

Safety rating system for chemical units

The ministry of chemicals and fertilisers have published the draft safety rating system for chemical plants on their website for public comments. Give your comments to them by October end. You can access the draft rating system in this link. See the file in "important links" as well as "updates" scrolling on their website.


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October 11, 2013

Where does your reactor rupture disc vent?

An accident in a reactor caused a rupture disc to burst open and spew the reactor contents out, killing people. Very often, people think that just by installing a rupture disc, a reactor is safe. You need to properly design the outlet system of a rupture disc. Read about the incident in this link.

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October 8, 2013

Ammonia transfer line incident

An incident of ammonia release has been reported in the USA when apparently a pressure safety valve malfunctioned. Check your safety valves in transfer lines - where do the PSV's release?  Are they tested regularly? Many times, tranfer lines are always in use and operations do not find the opportunity to release them for maintenance.

Read about the incident in this link.

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October 5, 2013

Ruptured reboiler caused fire?

A company news release about the explosion at their Geismar plant indicates the following:

"According to the preliminary findings three main factors in combination with one another contributed to the incident:
>      The unexpected presence of liquid hydrocarbons in the reboiler in standby mode
>      The introduction of heat into this standby reboiler
>      The pressure relief system was isolated from the reboiler which was in standby mode"
Read the news release in this link.
It is heartening to see this news release on the company's website itself. In India, we are still waiting news about the investigation about the cooling tower explosion in a refinery!!

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October 3, 2013

"This is your pilot sleeping"

A recent incident in a British airline where both the pilot and copilot dosed off because of lack of adequate sleep in the previous nights highlights the importance of fatigue management in the chemical industry, too. While the chance of a control room operator in a common control room in a chemical unit to fall asleep unnoticed is less, fatigue often impairs judgement and reaction. For plants using process simulators for training, it is worth to take the trainee through a series of night shift training sessions so that he himself feels the difference.
Read about the incident in this link.

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October 1, 2013

Emergency exits

Thanks to Mr Salim Akthar for sharing news about a fatality in a cement plant where a person died due to lack of proper emergency egress. The incident occurred when the persons went to attend to a cement extraction problem in a silo.  As the choke suddenly cleared, the victim panicked and it appears that while trying to escape from the exit staircase his forehead struck against some equipment / obstruction on the way. He died due to the impact. This incident highlights the importance of emergency exits while performing non routine jobs.


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September 23, 2013

Possible dust explosion during hot work

Thanks to Sujith for sending information on a possible dust explosion in a tank storing HDPE in Korea, during welding work. The news article in the Korea Joongang Daily mentions:
"The sudden and massive blast hit the plant, located at the Yeosu Industrial Complex, at around 9 p.m. Thursday, catching workers engaged in welding off guard, some falling 30 meters (98.4 feet) down from the tank to the ground, according to witness accounts.
The death toll is likely to rise as five of the 11 wounded are reportedly severely burned. Firefighters contained the fire within 10 minutes after the blast.
The plant, owned by Daelim Industrial, was undergoing maintenance work at the time.
Workers were welding a door into the tank to make an entrance so the company could send inspectors in to examine the interior, the company said. 

“We checked if there was remaining gas in the tank every time workers were put to work, thus multiple times a day,” said an official with Daelim’s public relations team, who requested anonymity.
“Each time, the result was zero. There was no gas lingering in the tank and thus that was not what caused the explosion.” 


Read the article in this link.


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Hot work accidents

We keep hearing about hot work accidents and loss of life. They are totally preventable and we need to apply basic precautions. See a powerpoint on welding cutting and brazing in this link.

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September 19, 2013

State of preparedness for chemical emergencies

A news report in the Times of India indicates that are 380 "Major Accident Hazard" (MAH) prone industrial units, of which 331are operational in Gujarat.  It also mentions that toxic chemicals with more than 5,000 MT tonnes storages in Gujarat are acrylonitrile, ammonia, benzene, chlorobenzene, chloroform, cyclohexanone, ethylene dichloride, hydrogen, cyanide, P-xylene, styrene monomer and toluene. The report specifies the gaps in infrastructure required for chemical emergency preparedness. Read the report in this link.

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September 15, 2013

Inherent safety and LOPA

A Chemical Engineering friend of mine (Vijay) who has about 35 years of experience in Process Industry wrote in to say this:

"Participated in a LOPA study involving pyrophoric materials. However, what struck me was people failed to understand intrinsic safe and unsafe. They did not grasp that giving high SIL rank and spending lot more on SIL certified instrumentation does not buy any increased safety from accidents that can occur when a pyrophoric material is handled. Only a process change can make things safer, not SIL certification or LOPA for inherently unsafe processes. This also happens to be the message of Fukushima. But people dont get it".

There is a strong lesson in his message!!
 
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September 12, 2013

HPCL refinery fire death toll increases to 27

The latest figure indicates 27 people have died till now in the HPCL cooling tower fire. I feel very sad when newpaper articles mention the death toll, also mention that only one HPCL employee was killed in the incident. A life is a life whether it is a contract worker or employee.
I am waiting for any news about the investigation. Any one know anything about the investigation findings?

Novel solution to flange leaks due to thermal expansion

Often, flanges leak due to the thermal expansion difference between the flange material and the fasteners.  An interesting article by a company that deals with such leaks. Read the article in this link.
PS: This is for information only.

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September 9, 2013

Another confined space fatality due to nitrogen

On 18th May an engineer in a refinery in Iran died when he entered a vessel filled with nitrogen. Time and again we keep hearing about deaths due to nitrogen. What are you doing to raise awareness of your employees about the hazards of nitrogen?
Read this article in EHS today.


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September 7, 2013

Ammonia leak kills 7

Closely following on the heels of the ammonia leak in a cold storage facility in China, an ammonia leak in a factory in Gujarat has reportedly killed 7 people.
Ammonia is used in cold storage facilities as it is a refrigerant. However the large number of leaks and incidents in India and in the World indicates that cold storage owners do not give adequate importance to safety while handling ammonia. As part of Responsible Care, companies manufacturing and selling ammonia to cold storage users may assist in training the users on the hazards of ammonia. Read about the incident  in this link.


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September 4, 2013

Hydrogen sulphide -the deadly killer

Unconfined spaces are also dangerous as far as hydrogen sulphide is concerned. Be careful when working near a potential source of hydrogen sulphide, even though it may be in open space. Two case studies of accidents involving hydrogen sulphide are given in this link.

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September 2, 2013

Emergency response after the HPCL fire accident

The death toll in the fire accident in the cooling tower at HPCL, Visakh has climbed to 19. It is very sad to see so many lives lost. A specialist doctor laments the state of emergency preparedness of the hospitals to handle burn victims. We never seem to learn from the lessons of Bhopal. We seem to have have a learning disability as far as emergency preparedness goes, as it is assumed it will never happen. Read the article in the Times Of India where a leading doctor blasts the state of emergency preparedness after the accident in this link.

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September 1, 2013

Accident during dewatering pipeline after hydrotest

An accident where two workers during the de-watering of natural gas pipelines after hydrotest as they were struck by temporary de-watering piping, which was not properly anchored and broke loose from its coupling from excessive air pressure. Read about the incident in this link.

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