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Q&A: Operation



ISO9000:2015 defines the Quality as “the degree to which a set of inherent characteristics of an object fulfils requirement”.

For example, a shopping bag has a function to carry things to put in, which is common to everyone. If the printing on the shopping bag has a defect, the shop owner may not satisfy with it because the shop’s image may drop down. But for its customer, nothing is concern with the defect of the printing because it does not effect the inherent function of the shopping bag.  Even though the object is same, the degree of fulfilment of requirement differs depending on the viewpoint of the concerned people. There is no absolute device nor standard to evaluate the quality.

Seven Basic Tools of Quality is a designation given to a fixed set of graphical techniques which are helpful in troubleshooting issues related to quality. They are used to solve the problems related to quality.

They include;

  1. Pareto chart

“Pareto chart” can find important defects and problems by stratifying data by phenomenon.

  1. Cause-and-Effect diagram

“Cause-and-Effect diagram” can organize the relationship between causes and results.

  1. Graphs (including control chart)

“Graph” makes the comparison of data easier to see visually. The whole image of the data becomes easy to understand.

“Control chart” can see whether the process is stable.   It is possible to distinguish and manage natural variations and variations of abnormal causes.

  1. Check sheet

“Check sheet” can grasp data classification, distribution by item and appearance situation.

  1. Histogram

“Histogram” divides the data into several sections and gathers the data of that section. The frequency (number) is represented by a bar graph. You can grasp data variation.

  1. Scatter diagram

“Scatter diagram” can see the relation (correlation) of characteristics, what relationship is between two data.

  1. Stratification

“Stratification” is a method of grasping problems by dividing data by group.

Safety is the control of hazards to attain an acceptable level of risk. *Control – is to regulate or to restrain.  *Hazard – is an unsafe act or unsafe condition which, if left uncontrolled,may rsults in an accident. *Risk – chance of personal or physical damage caused by the hazard.

In factory,safety is more important than production.The word “safety” has many different meanings in society. So it is dificult to define it uniquely.Even so,”safety” in the factory enviroment has the following meaning;  There are no accidents that result in: *personal injuries  *damage to property  *bad effects on residents and areas around the factory.       The factory is managed to ensure that the above conditions are maintained continuously.

Maintenance is to keep it in a normal condition.Maintenance at the factory is main work such as inspection, repair etc. Specifically, it refers to exhaust or replacement of damaged or deteriorated parts.

Actually, there are many negative things if you do not do maintenance.

For example, if you think that parts should be repaired and replaced after parts have broken down, there are parts that require time to obtain, so it may take several months before repair request and repair / replacement work , Inconvenient situations such as parking equipment can not be used until the work is completed will occur.

Once a major accident happens, it will cost a lot of money.

If maintenance is done on a regular basis, you can keep machinery and parts as long as possible, check parts and parts that are getting worse in advance, and take preventive maintenance before breakdown.

Regular maintenance is very necessary in order to use the mechanical type parking device for longer, safer and more reasonably.