Showing posts with label Safety. Show all posts
Showing posts with label Safety. Show all posts

Monday, August 25, 2014

Stampede - an Operations failure

Operations failures that cause a loss of lives and are avoidable without much difficulty are very painful. Here lives are at stake and not merely excess stocks or breakdowns or some other performance metrics. Take the lastest stampede in Madhya Pradesh: http://bit.ly/1p7f9yf. 

As of now 10 people have been reportedly dead.

The number of temple stampede deaths in India are unprecedented. Take this data:
October 2013: Madhya Pradesh, 115 dead
February 2013: Allahabad, 36 dead
November 2011: Haridwar, 16 dead
January 2011: Sabrimala, 102 dead
March 2010: Kunda, 71 dead
August 2008: Himachal Pradesh, 162 dead

The list can go on. These are all stampede events with relation to some religious activity. The data has been sourced from wikipedia.

All places of religious importance have a significantly higher than average rate of human density. This makes the system highly susceptible to failures. An electric fire at home may at most cause a fire and in a worst case death of a few people. In a dense area, an exactly similar event can lead to very grave outcome. A small spark may ignite a chain of events leading to an enormous tragedy. The first point being made here is that tragedies of similar nature in domestic and public locations have a much greater impact in public places.

At homes, or even in offices the people in the system are more or less constant. All those people generally have a long term stake in the well being of that place. Thus, in a majority of cases, minimum safety standards are ensured. In public places, in spite of the religious connection, the situation is very different. Pilgrims may not always be as careful in ensuring a risk minimizing behaviour. That there are so many other pilgrims may create a condition where no individual takes the onus.

A third point is about the concept of risk probability. Say an office has 100 people and each of them is capable of causing a catastrophe with a probability of 0.01%. The chance the there will be a catastrophe in the office is still lower than 1%. In a gathering of 10,000 people the chance of a similar tragedy would be more than 60%. Simple statistical calculations point to the fact that the probabilities of tragedies caused by human failure are significantly higher in public places.

Some religious places have a spurt of pilgrims on some specific days of a year only. This spurt can increase the number of pilgrims by more than a thousand times. With pilgrims the entourage also includes shopkeepers, beggars and similar people. Most places are not designed to handle this sudden increase in the number of people. Thus the system is in a shock and very susceptible to failures. 

There can be more reasons. But, the point remains, that in places with high human density, like the places of worship, the probability and the impact of a tragedy are both very high. It thus makes sense that temple management and the staff of such public places give more than average attention to safety issues. There has to be some sort of paranoia for tragedy prevention.

One way to create such systems is of course by the rule of law. Temples and other religious places could be forced to have a set of safety based policies and the temple management could be made directly liable for any deviations or failures. The fear of punitive action might force attention on this ignored issue. However, it is common knowledge that forced compliance based system rarely result in intended outcomes. People would always find ways to subvert the rules and thus there would be no major improvement in the behavior.

I am not clear to the exact nature of the solution. But, I am clear that every place of religious gathering would have to evolve their own ways of safety procedures. Temple management and staff must be educated and thus motivated to create safety policies. A temple would never have a deity that is unclean. Something should be done so that unsafe practices are a similar anathema. Every human is an incarnation of the divine. Thus, ensuring safety of humans is probably as big as any other offering made to the almighty. 


Saturday, March 23, 2013

Accidents are cheap and safety expensive

There was a blast in the Tarapur unit of Aarti Drugs Limited at the Tarapur MIDC yesterday. Five young people lost their lives. It seems these young people were screaming with pain for 2 - 3 hours before giving up the struggle.

http://timesofindia.indiatimes.com/city/mumbai/5-dead-as-reactor-blast-brings-building-down/articleshow/19137728.cms

This is not the first incident of an accident at Aarti Drugs Limited. As recent as October 2012 a major boiler blast in the Dombivali unit of Aarti Industries had led to three people being hospitalised and more than 125 others treated for vomiting, burning eyes and breathing problems. Coming back to Tarapur, this is just one of the many incidents which have been reported from Tarapur MIDC. In December 2012 a reactor blast in Sunrise Process Equipment had led to injury of four people. In September 2011 a hydrogen sulphide gas leakage at the Sequent Scientific plant at Tarapur had caused death of 4 employees.

Tarapur is not a town secluded from the mainstream. It is less than 100 kms away from Mumbai and has the Atomic Power station. The industrial town also boasts of organisations like Tarapur Management Association (TMA) and Tarapur Industries Manufacturers' Association (TIMA). Such frequent accidents do not show these organisations, factory owners and professionals working in Tarapur in a positive light. 


Why is it that the accident rate is so high in the Tarapur MIDC and also a few select companies like Aarti Industries? The only possible reason is that it is cheaper to manage accidents and more expensive to prevent them.

The low probability factor

Human minds are known to ignore all risks that have a very low probability of occurrence. That is why people avoid wearing helmets and seat belts. Even though the impact of a traffic accident is high, possibly death, the extremely low probability makes the human mind think - it can't happen to me. This is precisely why these firms, their owners and the senior professionals have a lax attitude towards accidents.

What they fail to understand is that a series of low risk situations would lead to a high risk probability. For example, assume that one process has a probability of failure as 1%. If five such processes are kept in a series, the cumulative probability of failure would be higher than 60%. This is a very simple probability calculation and I do not think that the firm owners are oblivious of this fact.

Accident prevention is a mindset. It starts with not tolerating even the slightest deviation from the operating norms. Equipments have to be maintained as per some fixed processes. Piping and valves have to be changed routinely. People working in the plants have to be trained continuously for safety procedures. But, all these activities are very expensive. It is probably easier to 'manage' a boiler inspector rather than shut the firm and have a honest boiler inspection. Same could be the case with pollution inspectors who are generally 'considerate'. As it is, it very rare for a business owner to get jailed for such acts of wilful murder.

Is it Tarapur and Aarti alone?
Of course not. The lax attitude towards industrial safety seems universal in India. A major automobile OEM has different safety standards for its own and contract employees. It is rare to see a worker on scaffolding in industries and around new constructions wearing safety belts. There are many offices in Mumbai where adequate fire protection  measures are avoided and extinguishers even when present are past the due date.

May be, the government authorities who are responsible to monitor and the business owners who are responsible to provide have both enough incentives to not do their jobs. At such times it is the professionals and professional organisations (like TMA and TIMA) who are responsible towards highlighting lax procedures and forcing firms to implement safety procedures. Businesses surely have to run to create profits and every action of businesses would be directed towards creating higher returns. However, human life should be above all such calculations. It might be okay to work around excise, transport and all such officials. But, anything that could even have the smallest probability of impact on human life must be non negotiable. 

Disclaimer
There of course will be some exceptions. I am sure that some plants in Tarapur and such industrial clusters have a very elaborate safety mechanism. But at the same time, there would possibly be a large number who would consider safety as an unnecessary burden. The article is directed towards these firms.

I do not have data of accident rates at other locations and I consider even a single occurance of such accidents as an untoleratable act.