| A | B |
|---|
| What is an MSDS ? | A document that all manufactures of potenially hazardous materials must provide to the users of their products. It contains detial information regarding possible hazards resulting from the use of their products on the Material Safety Data Sheet |
| What is proximity work ? | Working near, but not in direct cintact with an potential hazard. |
| What is a confined space ? | A space that has a small area, limited means of entry or exit, may also have poor ventilation. |
| Should you report accidents, incidents, or near-misses ? | You should report any of these no matter how minor |
| Give some examples of personal protective equipment (PPE): | Safety glasses, gloves, ear plugs, safety shoes, welding helmets |
| What should you try first if someone is being electrocuted ? | Disconnect the power source |
| What should you try second if someone is being electrocuted ? | Push them away with a non-electrically conductive material |
| What is distortion ? | Movement or wraping of parts during heating or welding |
| What are job code specifactions ? | When ever a bridge, building or ship, or pressure vessel is welded the manufacturer and the buyer must agree on how each weld must be made . To keep from writing new codes for each job, government agencies, societies, and associations have developed universal codes. |
| What are the major compents of an arc welder ? | Electrode lead and holder, workpiece clamp(ground) and lead, power supply (machine) |
| How does welding current differ from te primary welding current ? | Welding current has high amps, and low volts, and primary current coming into the receptable has high volts and low amps |
| In the electrode numer E7018, what does the E represent ? | Electrode |
| In the electrode number E7018, what does the 70 represent ? | Tensile strength |
| In the electrode number E7018, what does the 8 represent ? | The chemical make-up of the flux ans steel. |
| In the elctrode number E7018, what does the one represent ? | That the rod can be used in any position (flat, horizonal, vertical, or overhead) |
| If the number was E7028, what would the 2 mean ? | Horizontal position |
| If the number was E7038, what would the 3 mean ? | Vertical position |
| If the number was E7048, what would the 4 mean ? | Overhead position |
| State the meaning of the acronym E6011. | Electrode with 60,000 psi tensile strength that can be useed in any position |
| What are the five basic joint types ? | Butt, Tee, Lap, Edge, and Corner |
| What are the basics forces that a weldment must be able to withstand ? | Tensile, compression, bending, torsin, shear |
| What is base metal preparation ? | Cleaning and preparing base metal joints for welding |
| What tools are used in metal cleaning ? | Files, grinders, chipping hammers, wire brushes, sandpaper |
| Name some safety conerns with oxyfuel equipment . | Explosion if compressed with oil |
| Acetylene pressures must never be above what psi ? | 15 |
| Acetylene cylinders have safety plugs designed to melt if what was to happen ? | External temeperatues rise above 220 degrees F |
| Acetylene cylinders have what type of liquid inside them ? | Acetone |
| Acetylene cylinders that have been tipped over must be stood back upright for how long before the can be used ? | 30 minutes |
| What will happen if you don't stand them upright the correct amount of time ? | The liquid acetone inside of the cylinders will be withdrawn and gum up the regulators and check valves |
| Oxygen cylinders have safety plugs designed to blow if what happens ? | Internal pressures of the cylinder rises too high |
| What does a check valve do ? | Allows gas to only flow in one direction |
| What does a flash arrestor do ? | Prevents backfires and flashbacks. It will allow heat, nut no flames to pass through to the regulator |
| Flash arrestors often have what built into them ? | Check valves |
| What is attached directly to the cylinders to control the amount of gas released ? | Regulator |
