Cylinders - Dartmouth
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Cylinders Volume 2 / Issue 4 UNDER THE MICROSCOPE The Dartmouth College laboratory safety newsletter Contact EHS for specific ques7ons, 646-1762 or e-mail [email protected] The Basics: Cryogen Reminders 1. Extreme cold contents can cause instant and severe frostbite 2. Always wear leather or cryogen specific gloves, lab coat, safety goggles or glasses and faceshield 3. Oxygen displacement. Cryogens will quickly displace oxygen within the room 4. Cold embrittlement. Cryogens can cause rubber and plastic to become very brittle 5. Explosion hazard. Containers without ventilation can explode due to vapor expansion when warming 6. Only use those cryogens for which you have had material specific training Cryogen Cylinder Valve Components ² Chain cylinders ² Close valves when not in use ² Use correct regulator and do not modify ² Replace cap and use a cart when moving In the News: Cylinder Explosion University of Hawaii at Manoa h.p://khon2.com/ 2016/04/18/hfd-releases- inves@ga@on-report-on-uh- manoa-lab-explosion/ Follow the link below
Transcript of Cylinders - Dartmouth
Cylinders
Volume 2 / Issue 4
UNDER THE MICROSCOPE The Dartmouth College laboratory safety newsletter
ContactEHSforspecificques7ons,[email protected]
The Basics:
Cryogen Reminders 1. Extreme cold contents can cause
instant and severe frostbite2. Always wear leather or cryogen
specific gloves, lab coat, safety goggles or glasses and faceshield
3. Oxygen displacement. Cryogens will quickly displace oxygen within the room
4. Cold embrittlement. Cryogens can cause rubber and plastic to become very brittle
5. Explosion hazard. Containers without ventilation can explode due to vapor expansion when warming
6. Only use those cryogens for which you have had material specific training
Cryogen Cylinder Valve Components
² Chain cylinders
² Close valves when not in use
² Use correct regulator and do not modify
² Replace cap and use a cart when moving
In the News: Cylinder Explosion
University of Hawaii at Manoa
h.p://khon2.com/2016/04/18/hfd-releases-inves@ga@on-report-on-uh-manoa-lab-explosion/
Followthelinkbelow
Compressed Gasses
Only use gasses for which you have been trained Consult the Safety Data Sheet (SDS) if you are unsure of a
materials properties
Check cylinders when they arrive for….. 1) Hydrostatic test date within 5 years (new
dates will be stamped below original) 2) Content identifying label 3) Good general condition 4) Protective valve cap
EHSStaffMaureen !Michael!Katrina!Brenda!Sandy!Tom!Molly!Jason !
Moving a cylinder 1. Never move a cylinder with a
regulator in place 2. Make sure valve is closed and the cap
is in place 3. Use a hand truck or dolly designed
for cylinders 4. Never roll a cylinder across the floor 5. Prevent cylinders from dropping,
banging into objects or each other 6. Do not leave a cylinder unsecured
Cylinder Anatomy 1. Cylinder cap!2. Valve handwheel!3. Valve packing nut!4. Pressure relief device!5. Valve outlet connection!6. Cylinder collar!7. Valve outlet cap!8. Specification number!9. Cylinder serial number!10. Initial hydrostatic test
date!11. Inspectors insignia!
Two Stage Regulator
