Assessments - 2, GPA: 3.5 ( )

Fabricante : Gentek Arquivo Tamanho: 1.29 mb Arquivo Nome : Língua de Ensino:

Prior to using the enclosure, check to make sure that the exhaust blower is operating and that air is entering the enclosure at its specified face velocity. The use of an airflow monitor is recommended to alert the user to a problem with airflow. 2. Use good housekeeping in the enclosure at all times. Clean up spills immediately. Periodically clean enclosure interior. 3. Do not overload the work surface with apparatus or work material. The safe operation of the enclosure is based upon having proper airflow through the structure. Do not place large objects directly on the work surface. Instead, elevate the object 3/4" on blocks to allow a flow of air under the object and into the rear baffle exhaust slots. Ensure blocks are level and secured in place. 4. Blocking large portions of the rear baffle will change the airflow pattern in the enclosure causing turbulence. (Do not store containers or supplies against the rear baffle, as this will affect airflow). 5. Always work with your hands as far back into the enclosure as possible. Keep all powders, chemicals and apparatus inside the lower air foil of the enclosure. 6. Do not work in this enclosure without the exhaust system running. 7. Perchloric acid use in this enclosure is prohibited. 8. High-level radioisotope materials are prohibited in this enclosure. Consult your Safety Officer. 9. Avoid cross drafts and limit traffic in front of the enclosure. Air disturbances created may draw contaminants out of the enclosure. 10. A qualified certification technician should test the enclosure before it is initially used. The enclosure should be validated whenever it is relocated. 11. The use of safety goggles, protective clothing, gloves and any other personal protective equipment recommended by your safety officer should be used. 31 Chapter 4: High Performance Features and Safety 12. The sash must remain in the down position while using the enclosure. 13. Proper performance of the enclosure depends largely upon its location and the operator’s work habits. Consult the references in Appendix D. 14. The enclosure should be recertified whenever it is serviced or at least annually thereafter. 15. The HEPA filter provides personnel and environmental protection from particulate matter. Because room air is drawn over the work surface during operation, this enclosure should not be used for operations requiring product protection from environmental contamination. 16. Avoid the use of flammable gases or solvents in the enclosure if possible. Care must be taken to ensure against the concentration of flammable or explosive gases or vapors. Use of an open flame should be avoided in the enclosure. Open flames may disrupt the airflow patterns in the cabinet, burn the HEPA filter and damage the filter’s adhesive. Gases under high pressure should not be used in the enclosure as they may disrupt the airflow patterns of the cabinet. 17. HEPA filters a...

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