sicurezza:lab_safety_en
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| Entrambe le parti precedenti la revisioneRevisione precedenteProssima revisione | Revisione precedente | ||
| sicurezza:lab_safety_en [2025/10/31 14:41] – Marco Faverzani | sicurezza:lab_safety_en [2025/10/31 16:18] (versione attuale) – Marco Faverzani | ||
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| - | ====== Lab Safety ====== | + | ====== Lab Safety ====== |
| [[https:// | [[https:// | ||
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| * [[[https:// | * [[[https:// | ||
| * [[https:// | * [[https:// | ||
| - | * {{ : | + | |
| - | * < | + | * For maintenance requests contact Marco Faverzani or Elena Ferri |
| - | * {{ : | + | * {{ : |
| - | * {{: | + | * {{: |
| - | * {{: | + | * {{: |
| - | * {{: | + | * {{: |
| ===== In Case of Oxygen Deficiency Alarm ===== | ===== In Case of Oxygen Deficiency Alarm ===== | ||
| - | * leave the laboratory immediately | + | |
| - | * immediately report the alarm to the supervisor | + | * immediately report the alarm to the supervisor |
| - | * do not disable the alarm | + | * do not disable the alarm |
| - | * in any case, do not re-enter the laboratory until the external display shows that oxygen levels have returned to normal (>20%) and until the visual alarm outside the lab has been turned off | + | * in any case, do not re-enter the laboratory until the external display shows that oxygen levels have returned to normal (>20%) and until the visual alarm outside the lab has been turned off |
| - | * do not tamper with safety systems: | + | * do not tamper with safety systems: |
| - | + | * do not bypass the solenoid valve that intercepts the gaseous nitrogen line | |
| - | | + | * do not damage oxygen sensor capsules by exposing them to solvent vapors or gas flows |
| - | * do not damage oxygen sensor capsules by exposing them to solvent vapors or gas flows | + | * immediately report any anomalies in the oxygen sensors to the supervisor |
| - | * immediately report any anomalies in the oxygen sensors to the supervisor | + | |
| ===== In Case of Blackout ===== | ===== In Case of Blackout ===== | ||
| - | * in case of blackout, the [[[http:// | + | |
| - | * computers connected to the UPS will automatically shut down after a few minutes | + | * computers connected to the UPS will automatically shut down after a few minutes |
| - | * in case of blackout, the air conditioning and ventilation system (([[[http:// | + | * in case of blackout, the air conditioning and ventilation system (([[http:// |
| - | * once UPS backup ends, the oxygen monitoring system will no longer be active | + | * once UPS backup ends, the oxygen monitoring system will no longer be active |
| - | * in case of a prolonged blackout, if necessary, use the UPS time to safely secure cryogenic systems and leave the laboratory; otherwise, leave immediately | + | * in case of a prolonged blackout, if necessary, use the UPS time to safely secure cryogenic systems and leave the laboratory; otherwise, leave immediately |
| - | * in any case, once UPS backup ends, leave the laboratory immediately | + | * in any case, once UPS backup ends, leave the laboratory immediately |
| ===== Regulations ===== | ===== Regulations ===== | ||
| - | * Workplace Safety ((students, undergraduates, | + | |
| - | * {{ : | + | - {{ : |
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| ===== Cryogenic Liquids ===== | ===== Cryogenic Liquids ===== | ||
| - | * Liquids used in the laboratory | + | |
| + | * Liquid helium (T=4K) | ||
| + | * Liquid nitrogen (T=77K) | ||
| + | * risk of cold burn | ||
| + | * always use cryogenic gloves | ||
| + | * wear protective goggles | ||
| + | * do not touch cold parts with bare hands (especially metals) | ||
| + | * risk of asphyxiation ((the volume change from liquid to gas is about 700 times: 1 liter becomes 0.7 m³)) | ||
| + | * pay attention to oxygen sensors: in case of alarm, leave the laboratory immediately and report the risk | ||
| + | * keep liquid helium containers connected to the copper recovery line | ||
| + | * risk of explosion ((the volume change from liquid to gas is about 700 times: 1 liter becomes 0.7 m³)) | ||
| + | * check the opening of safety valves | ||
| + | * check the closure of vent valves | ||
| + | * always check pressure difference before opening a valve | ||
| + | * keep all containers vertical | ||
| + | * do not use dewars to pour liquid | ||
| + | * always close containers with proper lids | ||
| + | * beware of ice plugs formation (possible high pressure) | ||
| + | * in doubt, call the responsible person | ||
| + | * {{ : | ||
| + | * {{ : | ||
| + | * {{ : | ||
| + | * {{ : | ||
| - | * Liquid helium (T=4K) | + | ===== Pressurized Gases ===== |
| - | * Liquid nitrogen (T=77K) | + | |
| - | * risk of cold burn | + | |
| - | * always use cryogenic gloves | + | * gases distributed in the laboratory: compressed air, nitrogen, and helium |
| - | * wear protective goggles | + | * high pressures may also occur in dilution refrigerator circuits |
| - | * do not touch cold parts with bare hands (especially metals) | + | * always close both valves at the take-off points |
| - | * risk of asphyxiation ((the volume change from liquid to gas is about 700 times: 1 liter becomes 0.7 m³)) | + | * before opening valves, set the regulators to minimum |
| - | + | * keep regulators below 500 mbar | |
| - | * pay attention to oxygen sensors: in case of alarm, leave the laboratory immediately and report the risk | + | * use suitable hoses for gas withdrawal and always check their condition before use |
| - | * keep liquid helium containers connected to the copper recovery line | + | * do not tamper with safety valves |
| - | * risk of explosion ((the volume change from liquid to gas is about 700 times: 1 liter becomes 0.7 m³)) | + | |
| - | + | ||
| - | * check the opening of safety | + | |
| - | * check the closure of vent valves | + | |
| * always check pressure difference before opening a valve | * always check pressure difference before opening a valve | ||
| - | * keep all containers vertical | ||
| - | * do not use dewars to pour liquid | ||
| - | * always close containers with proper lids | ||
| - | * beware of ice plugs formation (possible high pressure) | ||
| - | * in doubt, call the responsible person | ||
| - | * {{ : | ||
| - | * {{ : | ||
| - | * {{ : | ||
| - | * {{ : | ||
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| - | ===== Pressurized Gases ===== | ||
| - | |||
| - | * gases distributed in the laboratory: compressed air, nitrogen, and helium | ||
| - | * high pressures may also occur in dilution refrigerator circuits | ||
| - | * always close both valves at the take-off points | ||
| - | * before opening valves, set the regulators to minimum | ||
| - | * keep regulators below 500 mbar | ||
| - | * use suitable hoses for gas withdrawal and always check their condition before use | ||
| - | * do not tamper with safety valves | ||
| - | * always check pressure difference before opening a valve | ||
| ===== Radioactive Sources ===== | ===== Radioactive Sources ===== | ||
| - | * Students are not authorized to handle radioactive sources | + | |
| - | * Do not touch with bare hands | + | * Do not touch with bare hands |
| - | * Do not touch the active part | + | * Do not touch the active part |
| - | * Keep at a safe distance from body and hands | + | * Keep at a safe distance from body and hands |
| - | * Protect eyes | + | * Protect eyes |
| - | * Limit exposure time | + | * Limit exposure time |
| - | * Handle with tongs | + | * Handle with tongs |
| - | * Always clearly label sources (indicating type and activity) | + | * Always clearly label sources (indicating type and activity) |
| - | * Store unused sources behind lead shielding | + | * Store unused sources behind lead shielding |
| - | * Study documentation before use | + | * Study documentation before use |
| - | * Sources used in the laboratory: | + | * Sources used in the laboratory: |
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| - | * {{ : | + | |
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| ===== Lifting Equipment ===== | ===== Lifting Equipment ===== | ||
| - | * overhead crane, electric hoist, forklift, and pallet truck may only be used with support from authorized personnel | + | |
| - | * when working with suspended loads, wear protective helmets | + | * when working with suspended loads, wear protective helmets |
| ===== Electrical System ===== | ===== Electrical System ===== | ||
| - | * it is strictly forbidden to tamper with electrical systems | + | |
| - | * access to electrical panels is allowed only for maintenance staff | + | * access to electrical panels is allowed only for maintenance staff |
| - | * it is strictly forbidden to tamper with electrical connections of instrumentation | + | * it is strictly forbidden to tamper with electrical connections of instrumentation |
| - | * do not leave computers or control panels open | + | * do not leave computers or control panels open |
| - | * electrical connections of equipment must only be made by electricians | + | * electrical connections of equipment must only be made by electricians |
| - | * do not overload power strips; always check the maximum rating | + | * do not overload power strips; always check the maximum rating |
| - | * do not connect multiple power strips in series | + | * do not connect multiple power strips in series |
| - | * do not leave power strips on the floor, especially near areas where cryogenic liquids are used | + | * do not leave power strips on the floor, especially near areas where cryogenic liquids are used |
| ===== Procedures ===== | ===== Procedures ===== | ||
| - | * [color=red]New Safety Procedures for UNIMIB Research Laboratories (10/ | + | |
| - | * General operating procedures provided by the Prevention and Protection Service | + | * General operating procedures provided by the Prevention and Protection Service |
| + | * {{: | ||
| + | * {{: | ||
| + | * {{: | ||
| + | * {{: | ||
| + | * Complete documentation {{: | ||
| + | * [[safety: | ||
| + | * Each laboratory user must review | ||
| + | * all general Operating Procedures listed above | ||
| + | * the specific rules, instructions, | ||
| + | * Each laboratory user must sign {{: | ||
| + | * Each laboratory user must print and sign this page | ||
| - | * {{: | + | ===== Bibliography (must read!) ===== |
| - | * {{: | + | |
| - | * {{: | + | |
| - | * {{: | + | |
| - | * Complete documentation {{: | + | |
| - | * [[safety: | + | |
| - | * Each laboratory user must review | + | |
| - | | + | * {{: |
| - | * the specific rules, instructions, | + | * {{: |
| - | * Each laboratory user must sign {{: | + | |
| - | * Each laboratory user must print and sign this page | + | |
| - | + | ||
| - | ===== Bibliography (to read!) ===== | + | |
| - | + | ||
| - | * {{: | + | |
| - | * {{: | + | |
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| Signature ............................................. | Signature ............................................. | ||
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| - | Would you like me to produce a **bilingual version** (Italian + English side by side or section by section)? It’s often useful for safety documentation. | ||
sicurezza/lab_safety_en.1761921704.txt.gz · Ultima modifica: da Marco Faverzani