AC2 - SLM3 (Reviewer)

49問 • 2年前

問題一覧

a Japanese concept that aims to optimize time for production, is a very practical, simple and proven approach to improving housekeeping in the workplace.

is the first S which means sorting out unnecessary items and discarding them.

Seiri/Sort/Suriin

is the second S which means we need to organize things

Seiton/Systematize/ Sinupin

is the third S which means we have to sanitize or clean our workplace

Seiso/Sweep/Simutin

is the fourth S which means we have to standardize what we are doing

Seiketsu/Standardize/Siguruhin

is the fifth and last S which means we have to do this process without prodding

Shitsuke/Self- Discipline/Sariling kusa

can eliminate some workplace hazards and help get a job done safely and properly.

Effective housekeeping

can frequently contribute to accidents by hiding hazards that cause injuries.

Poor housekeeping

Benefits of Good Housekeeping

Maintains safe and healthy work conditions Saves time, money, materials, space and effort Improves productivity and quality of work Boosts morale Reflects a well-run organization

Electric accidents are classified into:

electric shock eye injury Fire or explosion

caused by contact with charged or leaked parts of electric facilities

electric shock

caused by strong light from arc welding work

eye injury

ignited by overheat, sparks, leakage current, static charges, and the like

fire or explosion

CIRCUIT PROTECTION DEVICE:

Fuses Circuit breakers Ground fault circuit – interrupters (GFCIs)

is a supersensitive appliance, rapid action power switch which breaks a circuit when where is more than 5 milliamps difference between the hot wire and the neutral or grounded conductors.

Ground fault circuit – interrupter (GFCI)

is the most serious electrical hazard. This happens when you touch a live wire, a tool or machine with poor insulation. You then become a conductor.

Electrical Shock

The minimum current at which a man feels an electric shock is about

1 mA at 60Hz

the limit current at which man endure the pain of an electric shock is about

7 to 8 mA

maximum current at which man can still move is about

10 to 15 mA

Other Types of Safeguarding

InterlockedGuard Restraint Device Two-Hand Control Gate

When this type of guard is opened or removed. The tripping mechanism and/or power automatically shuts off or disengages, and the machine cannot cycle or be started until the guard is back in place.

InterlockedGuard

Use cable or straps attached to the operator’s hands and a fixed point Must be adjusted to let the operator’s hands travel within a predetermined safe area Hands - feeding tools are often necessary if the operation involves placing material into the danger area

Restraint Device

Requires constant, concurrent pressure to activated the machine The operator’s hands are required to be at safe location (on control buttons) and at a safe distance from the danger area while the machine completes its closing cycle

Two-Hand Control

Movable barrier device which protects the operator at the point of operation before the machine cycle can be started

Gate

is the result of chemical combination of a combustible fabric (fuel) with oxygen within the nearness of sufficient warm

Fire

In case any one of the three is lost, a fire will not begin. The relationship is called

Fire Triangle

Basic Chemistry of Fire

Fuel Oxygen Heat Chemical Reaction

combustible materials. This includes many substances such as natural gas (methane), plastics, wood, natural and artificial fibers, paper, coal and other living matter.

Fuel

Fine normally draws its fire through the air, which is a mixture of 21 percent oxygen and 78 percent nitrogen.16% of oxygen is needed to sustain fire

Oxygen

Sufficient _____ to raise the temperature of the fuel and oxygen occurs.

Heat

Vapors of gases, which are distilled during burning process of a material, are carried into the flame

Chemical Reaction

Three Methods of Heat Transfer

Conduction Convection Radiation

Is the transfer of thermal energy between neighboring molecules in a substance due to a temperature gradient. It takes places in solids, such as metal, timber, concrete and glass.

Conduction

Is one of the major modes of heat transfer. It takes the place in fluids and gases cause by convection currents.

Convection

Is electromagnetic radiation emitted from a material which is due to the heat of the material. The characteristics of which depend on its temperature. It is the process of heat transmission though air and gases.

Radiation

Hot surface produced by defective electrical equipment are a common source if ignition.

Electrical equipment

If some liquids are heated or sprayed to a very hot surface, it may ignite spontaneously without a present ignition source.

Spontaneous Ignition

Is a type of combustion which occurs without an external ignition source. Combustion begins if a sufficiently strong oxidizer, such as oxygen, is present.

Spontaneous Combustion

In may workplaces, employees smoking, or other persons smoking in a certain area. Can be a source of fire.

Smoking

Sparks can be created by friction, for instance where the moving part of a machine comes to contract with a fixed part, or two moving surfaces rub each other or slide together during machine operation.

Friction

n vehicle maintenance, and parking areas, diesel-petrol engine, vehicle emissions and hot surface like exhaust systems can be a source of ignition

Engines, Vehicle Emissions and Hot Surface

Open flame in the workplaces such as boilers, furnaces, portable heating appliances, etc. can be also a source of ignition.

Open Flame Sources

In limited cases, _____ can be a source of ignition.

Lighting

Fires involving wood, paper, cloth, trash and other ordinary materials.

Class A

Fires involving flammable liquids such as gasoline, thinners, oil-based paints and greases.

Class B

Fires involving energized electrical equipment, where a nonconducting gaseous clean agent or smothering agent is needed. The most common type of extinguisher for this class is a carbon dioxide exinguisher.

Class C

Fires involving combustible metals such as magnesium, sodium, potassium, titanium, and aluminum.

Class D

Fires involving commercial cooking appliances with vegetable oils, animal oils, or fats at high temperatures.

Class K

means putting everything in its proper place. It is everybody’s business to observe it in the workplace.

Housekeeping

AC2 - LM2 (Reviewer)

AC2 - LM2 (Reviewer)

HIRAC

HIRAC

MSE Reviewer

MSE Reviewer

EE12 Quiz 1

EE12 Quiz 1

PEC Definition - Quiz 1

ユーザ名非公開 · 45問 · 2年前

PEC Definition - Quiz 1

Quiz 2

Quiz 2

PEC Quiz 2

PEC Quiz 2

Chapter 5

Chapter 5

Chapter 6

Chapter 6

Quiz

Quiz

Finals

Finals

Fluids Finals

Fluids Finals

問題一覧

a Japanese concept that aims to optimize time for production, is a very practical, simple and proven approach to improving housekeeping in the workplace.

is the first S which means sorting out unnecessary items and discarding them.

Seiri/Sort/Suriin

is the second S which means we need to organize things

Seiton/Systematize/ Sinupin

is the third S which means we have to sanitize or clean our workplace

Seiso/Sweep/Simutin

is the fourth S which means we have to standardize what we are doing

Seiketsu/Standardize/Siguruhin

is the fifth and last S which means we have to do this process without prodding

Shitsuke/Self- Discipline/Sariling kusa

can eliminate some workplace hazards and help get a job done safely and properly.

Effective housekeeping

can frequently contribute to accidents by hiding hazards that cause injuries.

Poor housekeeping

Benefits of Good Housekeeping

Maintains safe and healthy work conditions Saves time, money, materials, space and effort Improves productivity and quality of work Boosts morale Reflects a well-run organization

Electric accidents are classified into:

electric shock eye injury Fire or explosion

caused by contact with charged or leaked parts of electric facilities

electric shock

caused by strong light from arc welding work

eye injury

ignited by overheat, sparks, leakage current, static charges, and the like

fire or explosion

CIRCUIT PROTECTION DEVICE:

Fuses Circuit breakers Ground fault circuit – interrupters (GFCIs)

is a supersensitive appliance, rapid action power switch which breaks a circuit when where is more than 5 milliamps difference between the hot wire and the neutral or grounded conductors.

Ground fault circuit – interrupter (GFCI)

is the most serious electrical hazard. This happens when you touch a live wire, a tool or machine with poor insulation. You then become a conductor.

Electrical Shock

The minimum current at which a man feels an electric shock is about

1 mA at 60Hz

the limit current at which man endure the pain of an electric shock is about

7 to 8 mA

maximum current at which man can still move is about

10 to 15 mA

Other Types of Safeguarding

InterlockedGuard Restraint Device Two-Hand Control Gate

When this type of guard is opened or removed. The tripping mechanism and/or power automatically shuts off or disengages, and the machine cannot cycle or be started until the guard is back in place.

InterlockedGuard

Restraint Device

Two-Hand Control

Movable barrier device which protects the operator at the point of operation before the machine cycle can be started

Gate

is the result of chemical combination of a combustible fabric (fuel) with oxygen within the nearness of sufficient warm

Fire

In case any one of the three is lost, a fire will not begin. The relationship is called

Fire Triangle

Basic Chemistry of Fire

Fuel Oxygen Heat Chemical Reaction

combustible materials. This includes many substances such as natural gas (methane), plastics, wood, natural and artificial fibers, paper, coal and other living matter.

Fuel

Fine normally draws its fire through the air, which is a mixture of 21 percent oxygen and 78 percent nitrogen.16% of oxygen is needed to sustain fire

Oxygen

Sufficient _____ to raise the temperature of the fuel and oxygen occurs.

Heat

Vapors of gases, which are distilled during burning process of a material, are carried into the flame

Chemical Reaction

Three Methods of Heat Transfer

Conduction Convection Radiation

Is the transfer of thermal energy between neighboring molecules in a substance due to a temperature gradient. It takes places in solids, such as metal, timber, concrete and glass.

Conduction

Is one of the major modes of heat transfer. It takes the place in fluids and gases cause by convection currents.

Convection

Radiation

Hot surface produced by defective electrical equipment are a common source if ignition.

Electrical equipment

If some liquids are heated or sprayed to a very hot surface, it may ignite spontaneously without a present ignition source.

Spontaneous Ignition

Is a type of combustion which occurs without an external ignition source. Combustion begins if a sufficiently strong oxidizer, such as oxygen, is present.

Spontaneous Combustion

In may workplaces, employees smoking, or other persons smoking in a certain area. Can be a source of fire.

Smoking

Friction

n vehicle maintenance, and parking areas, diesel-petrol engine, vehicle emissions and hot surface like exhaust systems can be a source of ignition

Engines, Vehicle Emissions and Hot Surface

Open flame in the workplaces such as boilers, furnaces, portable heating appliances, etc. can be also a source of ignition.

Open Flame Sources

In limited cases, _____ can be a source of ignition.

Lighting

Fires involving wood, paper, cloth, trash and other ordinary materials.

Class A

Fires involving flammable liquids such as gasoline, thinners, oil-based paints and greases.

Class B

Class C

Fires involving combustible metals such as magnesium, sodium, potassium, titanium, and aluminum.

Class D

Fires involving commercial cooking appliances with vegetable oils, animal oils, or fats at high temperatures.

Class K

means putting everything in its proper place. It is everybody’s business to observe it in the workplace.

Housekeeping