Mega System Tech iCV-03 Bedienungsanleitung PDF herunterladen (Seite 61)

OCTE SAFEdoc

FAB

d. welding in the presence of explosive materials.

ANSWERS TO WELDING SAFETY TEST

1. Cotton, wool and leather are recommended for clothes.

2. Fabric softeners decrease clothes ability to repel sparks.

3. Synthetics may melt where sparks land. Note: some specialized synthetic materials can

provide a short-term flame barrier.

4. Welding goggles should fit over safety glasses or spectacles, and should make full-face

contact.

5. A portable exhaust fan helps vent an area.

6. Earmuffs and plugs help to exclude noise and sparks.

7. Facial hair, clothing, goggles and spectacles can affect the seal.

ANSWERS TO WELDING FIRES AND EXPLOSIONS HAZARDS TEST

1. Air ducts and shafts carry sparks to distant areas.

2. Excess oxygen causes materials to burn, which are not normally combustible, or causes

them to burn more fiercely.

3. Oxygen, (or the oxygen in air) must mix with substances to make them combustible.

4. Because they may leak, allow gases to accumulate in the atmosphere.

ANSWERS TO WELDING FUMES AND GASES TEST

1. Staying to one side of the welding plume is the first defense.

2. Rust inhibitors produce phosphine gas.

3. Phosgene may be produced by degreasers.

FAB SAFEdoc Page 58

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Mega System Tech iCV-03 Bedienungsanleitung Seite 61