1. UC Davis Departmental Safety Coordinator Meeting
Brooke Stahmer
University Sales Specialist
(916) Cell

2. Today’s Goal
Brief overview of a few very in depth topics
Examples and best practice’s
The ISEE program overview

3. Liquid Nitrogen Withdrawal Device
¼” Turn for safe
use
Pressure Relief
Safety Vent
Most secure way
to use LN2

4. Cryogenic Safety

5. X X

6. Moving Liquid Containers
Lift vs. Roll
Push vs. Pull
Beware of Rough Surfaces/Slots/Crevasses/Grates
Liquid Cylinders With Castors are Not for Rough Surfaces

7. What causes oxygen deficiency?
Vaporization of cryogenic liquids (except oxygen) in an enclosed area.
Air Contains 78% Nitrogen, 21% Oxygen
< 19.5% Oxygen, Risk of Oxygen Deprivation
Rapid Nitrogen Venting
Increases Nitrogen Concentration,
One Volume of LN2 = 696 Volumes of Gas
Little Warning
Odorless, Colorless
Symptoms
Light Headed, Dizziness, Drowsiness, Unconsciousness, Death

8. Oxygen Deficiency Monitors
Oxygen Monitor
Alarms <19.5% O2
Audible
Flashing Light
Inside Room
Outside Room
Portable O2 Monitor!

9. Cylinder Storage Best Practices
Understand the properties and hazards
Know your SDS
Secure cylinders with 1-2 points of contact to wall, floor, workbench or cart.
Know the requirements per hazard class
Store the cylinders in a safe place
Secure to a fixed object or cart
Always store with cap on
Never near an electrical outlet
3 or more cylinders should be nested

10. Incompatibility Table
The table below provides criteria for separating hazardous materials:
Type
Material
Nonflammable
Gas
Flammable
Oxidizing
Highly Toxic &
Toxic Gas __ C
Flammable Gas
20 feet or
separation
Oxidizing Gas
Corrosive Gas
C - compatible

11. SDS and Data Sheets

12. The Right Range of Supply
Tube Trailers, Bulk
TT 45,100 / 181,155 SCF
Bulk ,000 Gallon
46,500 – 1.2 mm SCF
MicroBulk
230 / 450 / 1,000 / 1,500 Liter
61 / 119 / 264 / 396 Gallon
5,658 / 11,070 / 24,600 / 36,900 SCF
Dewars
230 / 180 Liter
61 / 48 Gallon
5,658 / 4,428 SCF
300 / 200 Size
304 / 228 SCF
Cylinders

13. Increase Laboratory Safety
Centrally locate cylinders within the work area
Wall mounted regulators
Floor space savings
Increase safety
Consider future requirements
Lecture Bottle Rental

14. Ways To Reduce Cylinder Handling

15. Safety of Personnel/Facility
I SEE Program
Safety of Personnel/Facility
Efficiency of Gas/Cryo Systems
Equipment Reliability & Capability

16. Do you want personalized help?
Personalized in depth lab assessment (ISEE)?
Specialty Gas storage questions?
Redeployment of surplus equipment?
Lecture bottle disposal opportunities?
Need a safe cost effective gas supply system change?
Questions on where to get some of the cryogenic accessories?
Brooke Stahmer
University Sales Specialist
(916) Cell