WELDING

WELDING
In the MARINE ENGINEERING there will be welding jobs so for the past couple of weeks we have been welding, and we have also been learning the different techniques and the right way of welding. Then we were taught how to brass and the procedures, also i was shown and taught how to set my welding plant and the right way of holding the welding torch. Also taught the different types of  welding.i.e.mig and tig/Arc welding and Gas welding. Also welding is properly the most dangerous jobs there is in the industry because most welding is done in confined space. The smallest mistake could cause fatal consequences.So when welding always know proper procedure and health and safety for yourself.

COMPONENTS/ GAS WELDING

FLASHBACK RESET VALVE

  This is the flash back reset valve it stops any flame or flashbacks from getting in the main valve and starting a fire. When at the time there is a flashback, the flashback valve will automatically shut off gas and flick and when it does u shut the whole plant off. That way giving you time to reset the flashback valve.

 GAS BOTTLES

There are Two main bottles that are used for gas welding. One bottle is the oxygen bottles which is black is a major requirement the both bottles are color coded for health and safety. Also the Acetylene is Maroon or red and most be in a upright position every time . Make sure that both bottle are secured when in use.

WELDING TORCH

The torch is used to mix the two gases and were the flame is ignited and when ignited there are three different types of flame neutral flame, oxidizing flame and carb flame. also most welding is done with the neutral flame. Also if not handled properly the welding torch can cause major injury or could be burned badly. 

Welding PLANT 

When you are setting your plants you must first place the regulator plants onto the gas bottles before use. Also make sure never to use oil or on the threads as it can start a combustion in which causing a fire. When shutting down plant fully turn the main valves off then t urn on valves on torch fully releasing any left over acetylene and oxygen.

TIPS

There are also different types of welding tips depending on what it is needed for  and the type of job there are also tips that are used to cut metal and others that help fuse metal. So there are a variety of tips for use.

HEALTH AND SAFETY

PART 3

OVERALLS

Overalls are for protecting the body from harmful objects, acid liquids and materials that might caused serious injuries. it helps minimise injuries. Not only are there overalls there are steel tipped safety boots and safety goggles that keep your body safe.

 

Health and Safety TOOLS(hand and machine)

Health and Safety TOOLS(hand and machine)

health and safety tools


I'm going to explain how to use tools properly and and what there use's are and whats the right way and wrong way of using them.

How to use a ball peen hammer and USE

• Ball peen hammer is used in variety of peening used for both shaping and striking. And striking punches and chisels, in metal fabrication.
•  Firstly hold firmly like making a hand shake

• Make sure hammer head secure and not loose
• Check for cracks and chips in hammer before use
• Hold the hammer close towards the middle of hammer
• Always wear safety glasses
• Always watch out for fingers
• Wear steel toed boots in case for falling objects 

How to use a metal filer

• Always check handle is on tight and not loose
• Check for rust, chips and cracks
• Always use two hands when filing
• Don’t hit or drop file. 
• Wear safety when filing overhead. 

HACKSAW 

•  Before using hacksaw check that the blade secure and not loose. 
• check for any damage to hacksaw blade.
• When about to cut keep fingers far from blade 
• when cutting stand at safe distance and don't rush when cutting for the hacksaw might break and get fingers.
• always wear safety glasses when using the hacksaw. 

LATHE

When using the lathe always wear safety goggles and stregthen any loose clothing or jewelery hanging down and also makesure that the safety guard is down. Makesure that you understand and know how to use it. Don't use any tools of any sort while lathe is in operation, also keep concentration when using lathe.




GRINDER

Always use safety goggles
lower guards and roll up sleeves of overalls.
know wat ur grinding and never grind small pieces of metal.

DRILL

When using drill makesure that drill is locked in with the chuck key.
also lower guard when drilling.
lock whatever is being drilled with vice or anything else to stop movement.

work place safety

WORK PLACE SAFETY

How to approach an Accident ?

1. Who should Investigate ?

* only people who are certified and have the skills and knowledge in case a accident shall occur. They will be the ones to investigate.
* If the accident is really serious and surely to be an recurrence there will be a certified group with all the skills and knowledge to check and justify the accident.


2. Gather all the facts.

* Interview witnesses and find those involved and have them describe the accident in details for better understanding of what happened.
* Complete all accident forms
* Make sure you understand the accident that has taken place in sequence before any analysis is made.


3. Identify all hazards Involved.

* look r all hazards and consider:
* Equipment and materials used.
* the kind or work environment your working in.
* see if your doing work procedures and practices properly
* Check before any job if you have any health issues.


4. Assess the hazard controls.

* what were the controls in place and why weren’t useful ?
* what else is needed ?
* is there a need to train and inform employees.


5. Decide Future Action.

* Describe what needs to be done so they can prevent further incident and accidents
* who should do what and when should it be done by.


6. Inform all those affected.

* Inform everyone who needs to knw and can do something about it, and not only those that were involved.

* this means circulating your report and making a summary of your findings.


7. Follow up.

* There must be routine check ups to make sure that all changes have been made and results were achieved.
* this relies that all measures are in place and to ensure that people are accountable for their actions, or lack of.

Health and Safety 1 FIRE EXTINGUISHER

MACHINE WORKSHOP

What do i know about health and safety well I’ve learned so far from last semester and the first couple weeks of this semester is to know what you are doing and that it is important to have the right clothing(overalls, safety boots, gloves etc.). Also know and understand the machine (drill, grinder, lathe, milling machine etc.) for which u are about to use. Finally I will also talk about some hand tools the right way to use them and also the wrong. As I go on I learn more and more about health and safety I will also be showing the different classes of fires and there extinguishers.


FIRE EXTINGUISHERS

As you can see here are the different fire extinguishers and the class of fire they are most suitable for. I will now explain the right way and wrong way for using the fire   extinguisher. 

HOW TO USE A FIRE EXTINGUISHER

The right way to use a fire extinguisher is:

·         Before using the fire extinguisher even though there are different types of extinguishers they all work for the same purpose.

·         For simple and easy memory of using the fire extinguisher use the acronym for which I’m about to explain.(PASS)

·         P: Pull the pin at the top of the extinguisher by doing that it will then release a lock and allow to discharge.

·         A: Aim at the base of the fire, not the flames u must aim for the base of the fire to put it out.

·         S: Squeeze the lever slowly, when you do this you will release the solution in the extinguisher out.

·         S: Sweep from side to side, using the sweeping back and forth to put out the flame.

·         Use the extinguisher from a safe distance several meters away from the flame and move closer as the fire starts to diminish.

Watch video for demonstration:
http://www.youtube.com/watch?v=ZCSms-jyOao

THE WRONG WAY OF USING THE FIRE EXTINGUISHER
So pretty much it’s the total opposite of using it rightfully and using for all the wrong reasons, some are just to play with but always take using a fire extinguisher very seriously.


THE DIFFERENT CLASSES OF FIRE

There are SIX DIFFERENT CLASSES OF FIRE.

Class A: Class A fires are the most common fires and are caused when solid and organic materials such as wood, cloth, rubber become heated so much that they ignite and then combust and cause a fire.

Class B: Class B fires are caused by flammable liquids and gases(petrol, diesel, propane, LPG etc.). Also use the same formula as all the other classes of fires which is heat +oxygen+fuel equals fire.

Class C: Class C is electrical equipment(overloading power points, faulty equipment etc.). Is a type of fire which starts from inside the machine(short circuiting, or overloading of a circuit). Causing fires.

Class D: Class D fires are caused by combustible metals such as sodium, titanium, magnesium, potassium, uranium, lithium, plutonium, calcium and others are flammable.This fires are very common and can spread to class A materials and make it alot more worst.

Class K: Class K fires are caused by cooking oils and fats. when over heated can combust and cause a fire.


References:
http://www.fire-extinguisher101.com/using.html
http://www.juliantrubin.com/encyclopedia/engineering/fire_classes
http://nz.images.search.yahoo.com