1 / 8

Handling of materials

Handling of materials. LO To be able to understand the different procedures for handling different materials and able to explain why these procedures exist. Materials. It is the nature of a material that will dictate the handling procedure

jalene
Download Presentation

Handling of materials

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Handling of materials LO To be able to understand the different procedures for handling different materials and able to explain why these procedures exist.

  2. Materials • It is the nature of a material that will dictate the handling procedure • The procedure is needed to keep operators and anybody close by safe • The procedure is based on the risks with the material

  3. Mercury • Key risk is that mercury is a heavy metal. Mercury vapour is hazardous • Disposal involves collected mercury spillages using a spillage kit. Simple kits involve a sponge like material to collect the mercury into a container. The container has an air-tight lid, which when in place will keep mercury vapours in. • Should be disposed off within local authority guidelines. As heavy metal there are special procedures. As a valuable material is recycled. Specialist firms will collect and even pay for large quantities; although will charge to remove small amounts.

  4. Acids • Weak acids can generally be diluted with water and washed away, provided not into a surface water drain and not done on a commercial basis (ie regular effluent disposal) • Strong acids should be neutralised first using a weak base such as sodium carbonate powder before rinsing away. • Any acids classified as toxic may required special treatments in addition to above.

  5. contamination • Key risk here is contamination of equipment. So if equipment has had contact with bacteria then the options are: • Incineration: A permanent process that kills all bacteria and destroys equipment. Eg Might be useful for used agar plates. • Sterilization: May include possible steam treatment or use of cleaning detergents with biocides Key outcome is that bacteria are removed and equipment can be used again.

  6. Glass objects • Clearly risk of cuts and further breakage • Transport of these object needs careful packaging. • Packaging needs to be clearly labelled. • Glass can be recycled, provided it is clean and not contaminated.

  7. Solvents • Are organic compounds and vapours can often be harmful to humans. • Often highly flammable. • To avoid these risks should be used away from sources of ignition. Users should use in ventilated area such as in a fume cabinet. Failing this a face mask equipped with a suitable filter to clean the air or clean air supply.

  8. Radioactive Materials • Radioisotopes can cause cancer. • To prevent this isotopes are stored in a lead lined box when not in use • Sources should be handled with special long tweezers so that human tissue is a safer distance away • Sources should be pointed away from users and other personnel. • Must be disposed off using documented procedure via specialist companies/organisations

More Related