Monday, April 4, 2016

Young Drivers

o  Almost 3,000 under 25 yrs killed or seriously injured
o  1 in 5 crash within 1 year of passing test
o  38,800 deaths and injuries in crashes involving drivers of less than 2 years’ experience
o  1 in 3 young male drivers crash within 2 years of passing their test
o  An 18 year old driver is more than 3 times more likely to crash than a 48 year old

In 2005

o  195 passengers and 88 pedestrians killed in crashes involving 17 – 20 year old drivers or riders
o  148 passengers and 93 pedestrians killed in crashes involving 21 – 25 year old drivers or riders

Lack of Experience
o  This is one of the main causes of accidents among young drivers. As experience grows so the accident level falls.
o  Key Periods for Young Drivers
n  Before Starting to Drive
n  During the Learning Period
n  After the Test

        Attitude
o  Young drivers, especially men, are over confident and often make risky manoeuvres, including;
n  Driving to fast
n  Driving to close to the vehicle in front
n  Dangerous overtaking
o  Young drivers consistently rate their performance as above average
o  Good driving is considered to be the ability to handle the car at high speeds

Hazard Perception
o  Young drivers often have excellent vehicle control skills and fast reactions.
o  But often poor at identifying potential hazards and assessing risk. Young drivers tend to overestimate their abilities.
o  It takes new drivers up to 2 seconds longer to react to hazardous situations than a more experienced driver.
Peer Pressure
o  Young drivers, especially men, who carry passengers are more likely to have a crash
n  Showing off to friends
n  Encouraged by friends
n  Freedom of driving
Gender
o  Young male drivers have a higher accident rate than their female counterparts
o  Also more likely to commit driving offences
o  A result of some of the factors outlined previously

Making Young Drivers Safe
o  The Pass plus Scheme helps young drivers to gain increased experience of driving in different conditions. Taking this course can also lead to decreases in insurance costs
o  Safe driving agreement. An agreement between the young driver and parents that the family car can only be used if certain conditions are met

Parents Influence After Test
o  New drivers often use parents’ car or parents help finance new driver’s car
o  RoSPA survey – 25% new drivers subject to parental restrictions.
o  53% of those not subject to restrictions would not object to negotiating some with parents

Making Young Drivers Safe
o  Limit driving at night. The majority of young driver accidents occur at night. Agree that the young driver cannot use the car at night
o  Limit the number of passengers. Agree to only have one or two passengers in the car until the driver has gained more experience
o  Ask the young driver to stick to a zero limit on drink and drugs for the first year of driving. Ask them not to get a lift with anyone who has been drinking or taken drugs
o  Discuss with the young driver the dangers of speeding. Outline that different situations, such as icy roads, need a slower speed
o  Discuss the danger of distractions such as using mobile phones, load music and eating whilst driving to ensure they understand the danger of being distracted
o  Stress the importance of passengers travelling safely. Agree that the young driver can only carry passengers if they wear seatbelts

Parents
  1. Help parents set good example – refresher training
  2. Help parents to help their children learn to drive – Training,  Resources
  3. Help parents influence young driver after test

When travelling with your son or daughter, let them drive to increase their experience. Offer constructive advice, but don’t be a back seat driver!


pict by How to teach your kids to drive  http://home.bt.com/category/learning-to-drive


Boiling Liquid Expansion Vapor Explosion (BLEVE)

BLEVE or Boiling Liquid Expanding Vapor Explosion can be defined as a major failure of a container at a moment in time when the contained liquid is at a well temperature above its atmospheric pressure boiling point. A type of explosion that can occur when a vessel containing a pressurized liquid is ruptured. A BLEVE is what happens, for instance, when a closed container of flammable liquid is exposed to strong heating.

Characteristic
If you have:
§  Pressurized and isolated vessel
§  Flammable liquid
§  Heating sources nearby
You have the chance to experience the BLEVE within 14 minutes in average.

* H.R. Wesson & J.R. Lott, “Effectiveness of fire resistant coatings applied to structural steels exposed to direct flames contact, radiant heat fluxes, and mechanical and cryogenic thermal shock”, AGA Transmission Conference, St. Lois, 1977.


Significant Bleve Accident
Several significant BLEVE accidents are as follows:
1. Feyzin, France in 1966
2. Kingman, Arizona in 1973
3. San Juan Ixhuatepec, Mexico in 1984
4. Others:
§  Waverly, Tennessee in 1978
§  San Carlos, Spain in 1978
§  Quebec, Canada in 1993
§  Burnside, Illinois in 1997


Bleve Type
There are 3 common types of BLEVE:

1. Thermally Induced BLEVE
2. Mechanically Induced BLEVE
3. Pressure Induced BLEVE

Thermally Induced
- The scenario generally is as follows:
1. A partially filled pressure vessel is subjected to high heat flux from a fire.
2. The liquid temperature starts to increase, causing pressure increase also within vessel.
    When the relief valve pressure setting is reached, starting to vent vapor.
3. Temperature on tank shell that is not in contact with the liquid increase dramatically.
4. The heat weakens the tank shell and Thermally Induced Stress are created near the vapor/liquid interface.
5. The heat, stress, and high internal pressure combine to cause a sudden violent tank rupture.
6. Tank fragments are propelled away to some distance at great force.
7. Most of the remaining liquid vaporizes rapidly and the rest is mechanically atomized to small drops. A fireball is created by the burning vapor and liquid.

Mechanically Induced
§  When a pressure vessel that is partially filled with liquid is mechanically   damaged.
§  This type of BLEVE is very rare for storage tanks, but is not uncommon in transportation accidents.
§  One good example is the tank car incident at Kali Krasak Bridge near Magelang, Indonesia in 1992.

When the tank car had an accident, rolled and the imposed stresses damaged the tank and failed catastrophically. Then the great explosion destroyed the bridge

Pressure Induced
§  When a pressure vessel is allowed to become completely filled with liquid. The temperature rises and there is no pressure relief valve or the pressure relief capacity is insufficient from exceeding the strength of the tank.
§  This type of BLEVE have occurred in several accident involving small, portable LPG cylinders for domesticuse.
§  However this BLEVE is rarely happened on a vessel with pressure relief valves.

BLEVE poses 4 main types of hazards:

1. Overpressure
2. Flying Shrapnel Object
3. Rocketing Tank Parts
4. Fireball

Over Pressure
§  There are 2 sources of overpressure:
1. Expansion of the vapor that was present in the tank
2. Flashing rapid change from liquid to vapor

§  A BLEVE can cause neighboring vessels, if within few meters, to shift from their supports, resulting in failure of connected piping, thus causing accident to propagate.
§  Overpressure wave can also cause serious injuries, especially those who do not wear protective clothing

Flying Shrapnel Object
§  Hazards posed by pieces of metal tank that are scattered when a tank ruptures are difficult to quantify.
§  The hazards will depend on energy that is transmitted to:
§  Pieces of the fragments
§  Sizes of the fragments
§  Weight of the fragments
§  Actual data gathered on the distances show that larger fragments of 125 m3 (33,000 gal) tank can reach as long as 460 m (1,500 ft). Smaller fragments could be thrown to several thousand feet.
§  NFPA course, Handling Hazardous Materials Transportation Emergencies, recommends an evacuation distance of 760 m (2,500 ft).

Rocketing Tank Parts
§  The “end tubes” of several bullet tank could travel in greater distance. For instance, a large segment of a 36 m3 (9,500 gal) tank could reach approximately 1,200 m (3,900 ft

Fireball
§  Fireball created by combustion of the mixture of vapor and liquid that is explosively dispersed by the sudden rupture of the tank.
§  Sudden expansion of compressed vapor and large quantity vapor from liquid flashing create a large ball of liquid droplets and vapor.
§  The heat of burning dispersed liquid and vapor causes a powerful thermal updraft which interacts with the burning fuel/air mixture to create shaped “ball of fire”.

How to Prevent Bleve
§  Proper design is applied
§  Prevent the fire
§  Prevent the heat of the fire
§  Avoid overpressure


Proper Design
§  Pressure vessel and its associated piping system
§  Sufficient relief valve capacity
§  Material strength
§  Sitting of major hazards installation
§  Fire protection system design

Prevent the Fire
§  Head shields and shelf couplers on railroad tank cars. This type of modification would be beneficial to prevent spill and fire following the derailments.
§  Proper diking and drainage would be very useful forpreventing liquid pools in case of accidental release.

Prevent Heat Radiation
§  Insulation. Ordinary type of insulation and jacketed with a steel skin demonstrate the effectiveness of insulation as a preventive measure. Other type of insulation is epoxy in tumescent coatings.
§  Advantage of the coatings:
§  Low moisture permeability
§  High adhesion to the substrate
§  Low differential expansion at steel interface
§  Bonded fixings not necessary
§  High mechanical strength
§  Low corrosivity
§  Good surface finish
§  Water. With sufficient water sprayed into the tank, it is possible to keep the tank and its contents below 100°C (212°F). Type of application are such as a fixed water spray nozzles, deluge systems and monitor nozzles.

Avoid Over Pressure
§  Keep the tank shell full with liquid throughout entire time of fire exposure
§  Admit water into the tank
§  De-pressurization system

Bleve Mitigation
§  Since BLEVE has uncertain and very short time to occur, NFPA recommended to evacuate the area and allow the impinging fire to burn itself out.
§  Other alternative could be to remove the vessel from the impinging flame (for the mobile tank).
§  And also to keep vessels cool and evacuate the area.

Could LNG tank bleve?
§  LNG tanks are not designed for pressure, and even if subjected to external fire, cannot be over pressurize to a level that would cause a BLEVE event. LNG tanks won't BLEVE because.
§  tanks are doubled walled (outer concrete wall up to 2 ft thick)
§  outer shell will prevent direct flame impingement on the inner tank
§  insulation between the outer and inner wall will greatly slow heat transfer to the LNG.
§  The tanks are also spaced sufficiently that the radiant heat from a fire on one tank would not cause a cascading failure of the other tanks. The outer concrete tank will be designed to withstand heat from an adjacent tank fire. Fire water systems will be stationed around the tanks and operating areas and would be used to keep surrounding equipment and facilities cool in case of a fire.

Conclusion
§  Have occurred with LPG tanks
§  Have never occurred with LNG fixed tanks.
§  Occurs when tank is heated by direct flame contact
§  The fire increases the temperature of the product (liquid) inside the tank.

I think this refinery is in Chiba City












Designing the Customer-Centric Organization

In order to be successful & viable firm the twenty first century a company must have a customer centric capability. The early movers will gain a competitive advantage, while straggles will scramble for competitive necessity
Today, nobody owns the customer, the customer own you. The customer may want to talk to the salesperson or to the distributor. The customer may want to talk directly to the service department. He or she may want to deal face to face or by telephone, fax, or e- mail. And customer who poses a question or complaint be email expects the salesperson to provide an answer to query during their next face to face meeting. If the salesperson cannot answer the question, the customer sees no relationship. To have a relationship, the company need to be able to do business the way the customer wishes.
1.       Surviving the customer revolution
o   That being customer- centric means literally organizing around the customer
o   The complete definition of organization (its more than just structure)
o   The definition of customer-centric organization and its contract to a product centric organization
o   How your organization compares to a complete customer centric design
o   How customer centric your organization really is

2.       Customer Centricity
o   That different solution strategies require different levels of customer centric organization
o   The solution strategies very in their scale and scope and integration requirement
o   How do determine your solution strategy with strategy locator
o   How to use the strategy locator to position your company on the customer-centric continuum
o   Hoe to use lateral form or organization to align the power and authority of your organization with your solutions strategy

3.       Light Level Application
o   How to apply the strategy locator to the light version of customer centric strategy
o   How to use customer tern as the structural form for light strategy
o   How to implement the total organization design by using management process, measure, reward, and people practice to complement the strategy and structure
o   That the leadership is the key ingredient for putting all of the pieces together

4.       Medium Level Application
o   How to apply the strategy locator to a more complex customer strategy.
o   The more complex strategy requires more complex organizations
o   How to evolve the organization by building, capabilities and then moving to more complex forms
o   How to use customer account units to customize package for different customers.
o   How to use CRM systems in the customer – centric organization

5.       Complete level application
o   How to apply the strategy locator to the most complete solutions strategies
o   How IBM created an organization that can act as One Company”
o   The definition of the front back organization model, which combines a customer centric front end with product centric back end
o   The different between horizontal generic solution and vertical industry specific solutions
o   How a solution process like CRM are used to manage the complex interface that go with high scale and scope solutions.
o   About the Kind of Human resources practice that are needed to support customer-centric organization.
6.       Alternate High Level Solution Companies
o   About the companies in their industries that have
o   That there are variation in the front back structure. Samsung applies it to division: Procter & Gamble, Like IBM, Applies it to the whole company.
o   That a successful solutions strategy requires the selection of customer who desire solution
o   That doing business the way the customer wants to do business causes a complex front end of the structure and value for the customer
o   That Procter & Gamble evolved first in the United States and then moved globally
o   How to manage the change process itself
Conclusion
The effective solutions providers are those with strong leadership teams that confront and resolve the contentious issues. These conflict are channelled into three key management process for discussion, debate, and resolution. These process are the strategic reconciliation of product and customers plans, the product portfolio, and opportunity management process. These process are the forum for exercise of strong leadership.

Adopted book of Jay R. Galbraith (Author of Design Organization)