Final answer:
Workers in phosphoric acid plants can protect themselves by wearing respirators, wetting down scale, and washing hands regularly.
Explanation:
Workers in phosphoric acid plants around phosphoric acid filters and associated areas can protect themselves by:
- Wearing respirators when welding on piping or equipment containing scale to prevent inhalation of radioactive particles.
- Wetting down the scale to prevent the generation of dust that could spread radioactivity.
- Washing hands before eating, drinking, or smoking to avoid ingesting any radioactive contaminants inadvertently picked up from the work environment.
Learn more about Radioactive material protection in phosphoric acid plants here:
https://brainly.com/question/30579291