Answer :

Final answer:

When doing an oxy-fuel cut or weld, proper eye protection is essential. The recommended shade number for oxy-fuel welding is between 3 and 5; for oxygen cutting, it's between 4 and 8. Always refer to safety standards for specific requirements.

Explanation:

When performing an oxy-fuel cut or weld, it's crucial to wear appropriate protective gear, notably hood or goggles, to protect your eyes from intense light and harmful UV radiation. The shade of the lens should correspond to the intensity of the process; a darker shade is required for higher intensity operations. For oxy-fuel welding, a shade number between 3 and 5 is typically recommended, while a shade number between 4 and 8 is suggested for oxygen cutting. However, it's best to refer to safety standards befitting your region and from the American Welding Society (AWS) for precise requirements.

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