« March 2007 | Main | May 2007 »
Blog for Books: Another New Book Give Away for Our Blog Authors |
April 26, 2007 |
|
Posted by Don Dunnington at 09:18 PM | Comments (2) |
|
Our publisher Joe Taylor is offering three high-value books as prizes to the next three blog readers who post articles here. These are technical books commissioned by British Materials Handling Board that will help process engineers solve a number of material handling problems.
The books are written by Lyn Bates, managing director of Ajax Equipment Ltd. in Bolton, UK. Lyn is a frequent contributor to our Ask Joe column and serves on the Bulk Material Handling Committee of the Institution of Mechanical Engineers. He is also a UK representative to the Working Party for Mechanics of Particular Solids of the European Federation of Chemical Engineers.
Easy to Blog, Easy to Earn a Free Book
It's easy to become a powerandbulk blogger. Just send an email with your contact information to don@powderandbulk.com with the subject line: sign me up for the powder blog. We'll create an account for you and help you get started. If you’re one of the next three bloggers, you’ll receive one of these books by Lyn Bates:
User Guide to Segregation
Price £ 30.00 (about $60 US) – two free copies offered to our blog authors
Segregation is virtually inevitable to occur when handling of free flowing materials composed of particles that differ in some of their physical properties. The significance and consequences of this phenomenon varies widely but, it can seriously impinge on plant performance or product quality.
Probably the most useful section of the book describes various means of controlling or mitigating segregation. Explaining the principles behind these methods allows users to develop designs and techniques tailored to suit their specific needs.
The book also provides a valuable source of references cited in the publication.
Guide to the Design, Selection and Application of Screw Feeders
Price £ 49.95 (about $100 US) – one free copy offered to our blog authors
Screw technology today plays an increasing important role in the drive towards improving quality, reducing costs, securing better working conditions and providing flexibility in solids processing.
Solids handling is a core industrial activity, but is renown for operating difficulties that are quite unrelated to the capital cost of the equipment.
Reliable and accurate feeders can both improve the quality and consistency of a product through close control of the ingredients and offer impressive savings through the reduction of off-spec, give-away, or over-delivery of product to filling machines.
Start Blogging Now
To receive one of these books free, register today as a blog author by emailing don@powderandbulk.com and requesting a free account. Be sure to include in the subject line: sign me up for the powder blog. To create an account for you, we need your name (first and last), email address, business address and phone number.
Hero or Chicken - Risk Perception in Macho Territory |
April 15, 2007 |
|
Posted by Joseph Taylor at 06:00 PM | Comments (0) | TrackBack (0) |
|
Lessons Learned from Fatal Events - Alternatives and consequences
Industrial Accident Analysis Dichotomy
• Search for the real cause and implement effective corrective actions
• Or find the “appropriate person to blame” and do nothing else
Based in the article See & Flee in the Petrochemical Industry, by Jim Whiting and on 32 years of personal experience in design start-up, operation, and troubleshooting of direct reduction plants worldwide.
Investigations on fatal events in industrial plants in Mexico, Malaysia, Indonesia, India, and the North Sea, as well as in Australia according to Jim Whiting, bring a question to mind.
Were the workers aware that the mine conditions were unsafe and was that awareness translated into actions to reduce the risk? Or was the risk accepted as part of the job?
Especially after the recent evidence at Pasta de Conchos (explosion in a coal mine in Northern Mexico), and the “heroic” declarations of some politicians: “We will not rest until we have found and punished the person responsible!”
Particularly, in one of the companies where I was employed, a few years ago, two operators died in an explosion, there was a ball a fire that covered them during one of the product discharges. Unfortunately this was not an isolated event.
I remember the work environment and the spirit that moved us. Production is first, personal security was never mentioned, even though the official speech would say otherwise. We thought we were expected to be “machos”.
Nobody wanted to appear as a “chicken”.
In that period, even the use of dust masks was socially unacceptable. The use of fall arresting harnesses indicated fear or insecurity, and was taken as a bad example for the rest of the workers.
“Nothing is going to happen! We have worked like this for more than 35 years; we are not going to back up now, are we?” This was said to me by one of the company’s VP’s, when he wanted to install a video camera in the open discharge of one of the new reactors. When I was explaining to him that the camera had open electronic components and that the atmosphere was explosive, and that the dust was electrically conductive, he said to me “we’re not going to chicken-out, are we?”
I had to think fast and melt the fuses in the camera, so that we could not use it. I then designed a rig to put the camera in with minimum risk. The end result was there was indeed an explosion, but, fortunately, nobody was hurt, as they were using the appropriate equipment.
I lost the opportunity to move up in the administrative ladder, as there were two Vice Presidents and one Manager looking down into the reactor that day!
Explosions in the reactor’s charge and discharge were frequent; the balls of fire were, literally, fireworks. The personnel would play, throwing objects from high platforms to the new engineers. We would laugh at their fear when they heard an unexpected (for them), explosion.
Intoxicated employees and flames during maintenance and operation were part of the environmental conditions, especially in some of the loading bins and quench towers, where, more than once, we retrieved unconscious, burnt and, sometimes, deceased personnel.
Reports and discussions were confronted with opinions from people in higher positions with no on-site experience, or that were so brave as to not visualize the danger. A report on a risky situation was a sign of not wearing the company’s T-shirt, and it was a terminal career move.
But we never ran, we would always return to work, once the ball of flame had passed. Actually, we were really never afraid. Nobody reported anything, we all knew the environment we worked in and we considered it exciting and part of our work. Those who would stay away were criticized and stigmatized.
The question now is, how do we train the operators and maintenance personnel on when to run or when to be “macho”?
When is it OK to be afraid?
Unfortunately, in Mexico, the consequences for a fatal accident in a company are few, even though the official speech may deny it. So there are hardly any effective motivational and disciplinary policies, besides signs and useless statistics.
In some cases, the consequences have been limited to the loss of production, during the time it took to clean-up.
In Australia, in comparison, a plant can be shut-down indefinitely.
In other countries, the insurance company can refuse to pay de damages, and fines for a fatality are charged automatically, even before the investigation, and they can be considerable.
Even so, “the culture of production is first”, it is universal… and it extends to nuclear installations and even to NASA.
And the phobia to use the emergency shut-down button also.
Many years ago, when we were beginning to make use of computers to control chemical plant operations, we decided to install controlled shut-down buttons, baptized as “the panic” buttons.
Few of us could clearly see the conditions under which they should be activated.
We only knew that shutting down a complex installation without assistance from the control system was very difficult, due to the number of variables that the operator had to have in mind. (This button was installed after a catastrophic incident, similar, in sequence, but not in consequence, to the one in Chernovyl.)
Each operator would establish the criteria for activating the “panic” button.
An unfortunate name as it implied the lack of ability of the person who activated it. Our people were reluctant to activate the “panic” button, as it meant that they were afraid of something.
Years later an effort was made to change its name to CSB (Controlled Shutdown Button), a difficult task in the petrochemical industry. At least the name was changed in some drawings!
Later on, due to the persistence of one of the production managers, the shutdown button was used every time they had to shutdown the plant. So the “panic” part of activating the button was finally lost, and became a very comfortable addition to the operation environment.
A related incident happened not long ago, two operators followed by a Manager went to a platform to correct a problem. They all knew they could have the option of shutting down the plant, nevertheless, they decided to solve the problem, without using the panic button.
The apparent process control loss and the record of recent repeated plant shutdowns made them take a high risk decision that took their lives.
The situation had never been analyzed or drilled.
They made the wrong decision as a team (they did not work as a team; they supported the wrong decision due to an incorrect concept of solidarity.
The technical problem was finally tracked to a poor control loop tuning (the plant had been built using multiple contractors, each one supplying its own control system); the conflicts between control systems led them to block all but one computer during start-up, a shortcut that would cost them dearly.
But the issue here is, what led them to decide to put their lives on the line, when there was the option of shutting down the plant and starting-up again?
As with all investigations, pertaining to human performance problems, the principal challenge is to:
• Analyze which were the “good reasons” that made them take that risk.
• See what they took into account that made them believe that their opportunities of winning were better than those of loosing.
All this behavior depends on the perception of risk. Which was and is the perception of risk of the miners in the coal mine industry?
Three perceptions have been considered for this incident, at least, to try to interpret the motivation of the operators that died and the rest of the personnel involved.
1. One setting could be that they intentionally, or unintentionally, did, or did not do something that had created the problem, and they believed that they could correct the problem before anyone else could find out, possibly to avoid a professionally embarrassing situation or for fear of disciplinary actions. To activate a stop button and shutdown the plant would make everyone aware of the problem. They believed that, if they could solve the problem without stopping the process, then nobody would find out what had happened. In that particular case somebody had pushed the start-up button again, resetting the computer block-out during start-up. (The buttons were too close together and the operator’s attention was on controlling a dome.)
2. The second setting is that the emergency stop button had been given the name of “panic button” or “chicken button”.
During our investigations we discovered:
• That there was a cultural expectation established among all the workers and management process, that the plant should not shut down for any change, unless you were “chicken”.
• Management would award those who were known to have been able to make a change without shutting down the plant. (They would also give more importance to the people who spoke English, no matter how inefficient they were.)
• This perception was reinforced when management would give contradictory or ambiguous messages referring to when to use the emergency stop button or the shutdown control button to stop the plant.
• Management honestly said that they had never told the operators not to use the stop button, and they probably frequently said otherwise, “your safety is more important than the process”, you have the power to shutdown the plant when you consider it necessary” and other similar euphemisms.
• BUT there had been some previous incidents when someone had shut the plant down and management had commented almost simultaneously, “Yes, you should have pressed the stop button, BUT we lost $250,000 Dollars worth of production”. The message that was relayed to the operators was ambiguous and they were left with a feeling that they had done something wrong.
• Adding to this, the personal image of the plant manager was that of a GI at work, people were afraid of discussing any issue with him.
You will agree that, frequently, the influence or pressure of our peers or bosses can have a great effect on how we perceive risk and how we perform in our jobs.
The third perception is familiar to all who have started plants up. There are many actions required in a plant start-up. There is much equipment involved and, normally, few people on hand. Therefore, the decision to shut-down the plant also takes into consideration the perception of the amount of work and time it takes to re-start it.
3. This third perception could be the main reason why the organization, not to say the operators, avoided activating the controlled shutdown button and do whatever possible to maintain the plant operating; in many cases not having the foresight of the risk that is being taken.
The message should be clear – and should be clear in the minds of Management, that all levels of the organization should frequently discuss the risk perceptions and risk expectations, as to how to handle tolerable/intolerable risk situations for special and real settings in their immediate work environments.
Fatal accidents, in particular, project a provocative and valuable concept, to be considered always in the meetings prior to the work and risk evaluation. Although we cannot give the names of companies or people that are involved, we can describe the conditions that gave origin, and their consequences, hoping the lessons will be useful for all, and hoping that you will never need to live these situations.
One of these could illustrate the case.
The operators knew, through smell, sounds and vibrations that an explosion was imminent and “saw and fled”; the supervisors stayed behind and died.
a) What determined that the supervisors should stay behind?
b) What was their perception of risk, conscious or subconscious?
c) And, their perception of duty?
d) What finally determined their behavior, and why did they stay?
e) Why do only the good employees get hurt and, sometimes, die?
f) Did the supervisors relieve that their boss’ wanted them to stay and die?
g) Did the supervisors ignore the risk?
h) Did they accept it consciously?
Some questions come to mind:
1) Was this discussed at any moment, among themselves, as to when they should stay and solve the problems, or when to run? Was this ever on the agenda?
2) Did their bosses ever discuss and analyze this setting at a previous meeting?
3) Did the operators consider themselves less responsible for the plant security and therefore ran?
4) Did they ever have a meeting with Management addressing this situation explicitly?
5) Was the company implicitly encouraging the supervisors to be in risky situations?
Using the knowledge we have gained after the incident, we ask:
Why didn’t we do what we were supposed to have done?
And now that we know what we have to do, why are we not doing it?
Confucius said at one point:
“If you know what you need to do and you do not do it,
then you are worst than before “
“To see what is right and not to do it, is want of courage”
The questions are actually simple.
From the answers, we should obtain actions to carry out, and not only assign guilt.
Actually, finding a guilty person or persons serves to satisfy the desire of vengeance; to try to destroy the opponent’s image little by little, will not reflect in substantial improvements.
The person selected as guilty will simply be substituted by someone else, possibly with less training and surely with less experience, who will be afraid of taking any decision.
Some questions that can be asked are:
• How many more settings of “see and flee” can be identified in our work places before having to take that decision when the time comes?
• Is there a trans-functional communication protocol that will inform us of other dangerous conditions?
All these questions should be made and discussed regularly, evaluating the answers, planning, practicing and stage-managing the actions and reactions within the work groups in your installation.
In the theatre, war and emergencies…
“You are what you drill”
• A systematic incident analysis tool used in many nuclear plants and employed to find root causes and the appropriate solutions, has proven over and over, how useful it is in the proactive risk evaluating process. For more information check their site www.taproot.com
A final challenge to be used in safety and hygiene group discussions at work is, what it means to be a hero (especially in the case of underground mining management and nuclear and petrochemical operations):
• Have you taken risks you should not have taken?
• Have you not reported deviations that could cause a tragedy, for fear of being seen as a coward?
To center a fatal incident analysis, in the search of someone to blame and to finish the analysis when that person is found, is a recipe for disaster.
Finding the root cause and taking the appropriate corrective actions is the only way out of the spiral. Closely following the corrective actions, and making sure they have done their job properly, will be the first step. If the information flow channel is kept open and objective between operation and management, this will insure further improvement, and a safer working environment.
Article by:
M. C. Marco A. Flores V.
tecmen1@gmail.com
TECMEN SA de CV
Applied Innovation
and
J.F.(Jim) Whiting
jim@workplaces.com.au
Risk@Workplaces Pty. Ltd.
Can-Canning to Infinity |
|
|
Posted by Joseph Taylor at 05:46 PM | Comments (0) | TrackBack (0) |
|
The April 2007 meeting of Australian Institute of Packaging was about alternatives to the traditional can but neither of the presenters had furled skirts or high kicks synonymous with staging of Can-Can however the presentation was nonetheless entertaining.
Peter Banfield and Kelvin Davies of Visy combined to update the assembly with the latest trends in food packaging using alternatives to the traditional tin can or innovations on the same.
Peter had travelled extensively and compiled a kaleidoscope depicting trends and concepts. Where necessary a commentary on the salient aspects of the package was included but most were self explanatory, for the underpinning message was that unless your package delivers the message and the contents the promise, it will struggle in the marketplace.(especially with the aging population)
Researches differ widely about canning numbers in traditional forms however, Visy experience indicates that metal cans are definitely not in decline, but are growing in most parts of the world by being enhanced by the combination of technologies with that of the proven can. Foil and Easy Open Ends applied to metal cans is one example, as is the enclosing of single serve or portion pack food in cans in a paperboard sleeve to indicate high value. Ghee in a can with a foil lid was not only innovative but the marketers had made the metal can bulbous to stand out in the crowd.
Private Label (EU) is also a key driver toward innovative alternatives to metal cans and the brand manufacturer who ignores the trend exposed to being left behind. Private label Suppliers are so strong that there is a Private Label Manufacturers Association [PLMA] which is growing and organises exhibitions (Amsterdam) that are now globally recognised as “the place to be”.
Milk in glass and can containers that is retorted and having a different organoleptic profile is gaining some ground in the premium market of traditional UHT paperboard boxes and is now on sale in ten countries but poised to expand. Premiumising is a new word for packagers’ lexicon particularly in brands that want to segment and Private Label that are launching new brands not only against multinational “bread and butter” marques but often against a totally new technology.
In the Australian and North American segments Private Label products are increasingly being packaged in China, Thailand, Latin America and Africa, and imported at prices simply below local costs. As Peter Banfield indicated at retail metal cans continue to have good volumes in Australia, although many are now imported.
One thought provoker was given when it was explained that the development of a substitute flexible package in the US has also allowed the off shore manufacturer to take the advantage of supply chain cost savings, ramp up production and using those economies, “drop” the excess in the North American theatre.
One packer in the Philippines imports Australian dairy products processes them and re-exports the finished shelf stable consumer pack to Canada; but in the old world similar events are reported. A branded African company has food packaged in France and exported home for sale, whilst a Greek operator launched plastic as an alternative to glass, and as it reached maturity reverted to higher premium glass offering with remarkable success.
Shelf Stable is leaning to segmentation for these newer plastic packs and some are also targeting the chilled markets. One example from France which when reported raised some debate, is for shelf stable products to be displayed in Supermarkets exactly as the traditional chilled range. Concern from the audience was that consumers may become confused or complacent and end up with spoiled product.
Some emerging European trends market the advantages of new clear plastic barrier technology and has delivered retorted hot dogs with included sauce, which has not displaced cans, but glass. Extrusion blow moulded self heating packs (Wolfgang Puck) for the on-the-run consumer is an example
But all is not lost for the traditionalists for Peter, as he handed the microphone to Kelvin Davies; advised that the metal can makers in Thailand can not keep up with demand.
Kelvin explained the science of packaging food in alternative package forms and the manner in which a process [casually referred to by many] retort may be carried out. The important thing is to heat the product long enough to render the product sterile without degradation. Retorting may be done by traditional steam, other processes using electricity, and microwave, pressure, whilst light or chemical technology are also being developed. Much was advised about computer technology and logic systems in the control of retorting in the burgeoning market for ready to eat meals. Not only human food, for Peter Banfield had already told us that the many US consumers treat their pets to as much as US$8.00 per day worth of food!
Metal cans have been light weighted and combined with high speed filling lowered costs with significant success, which when added to inherent advantages in tamper evident and tamper proofing, combined with the 100% recyclability and high volume return in kerbside collections adds to longevity and continued acceptance.
But plastic alternatives have more ability in the areas of shelf awareness and stand out shapes. Consumers are slowly converting to the message that a plastic package represent high quality and will pay a premium for a package that actually arrives on the shelf at a higher unit cost than the one it replaced.
Whilst the introduction of plastic packages continues unabated the message for Kelvin the Scientist was that “plastic is more complicated” and careful evaluation is the most important thing to consider when making the change. Whilst realtors shout position-position-position the plastic package technologists would say evaluate-evaluate-evaluate and benchmark against a proven package in the same genre.
The evening ended with a question and answer session and by coincidence the two presenters from Visy were thanked by the 2007 Chairperson Nola Porteus also of Visy who presented new member John McBride with his certificate of office. Guess what? John works for Visy.
Written by Michael B Halley FAIP
Australian Institute of Packaging
Web site: http://www.aipack.com.au/
