The document covers the usage of liquid nitrogen (LN2) in the context of overclocking, outlining safe practices, necessary equipment, and general handling rules. It emphasizes the importance of safety while using LN2, including ventilation, the correct type of containers, and precautions around children. Additionally, it introduces further certification levels for those interested in expanding their knowledge and skills in LN2 for overclocking.

1. LN2 Certification
Level 2: LN2 Use for Overclocking “personal”
Prepared'by'
Our'Mission'
'
• Evangelize'overclocking'
• Convert'enthusiasts'in'to'passionate'overclockers'
• Support'the'community'
• Further'professionalize'extreme'overclocking'
'
'
Copyright'HWBOT'2015'

2. Disclaimer
HWBOT'or'any'of'its'representaHves'accepts'no'liability'for'the'content'of'this'presentaHon,'or'for'
the'consequences'of'any'acHons'taken'on'the'basis'of'the'informaHon'provided.'
'
HWBOT'shall'not'be'liable'for'any'loss'or'damage'of'whatever'nature'(direct,'indirect,'
consequenHal,'or'other)'whether'arising'in'contract,'tort'or'otherwise,'which'may'arise'as'a'result'
of'the'use'of'(or'inability'to'use)'cryogenic'gases'and/or'liquids'of'any'kind.'
'
This'presentaHon'is'published'for'general'informaHon'purposes.'Any'use'made'of'the'informaHon'in'
this'presentaHon'by'the'reader'is'their'sole'responsibility.'These'safety'informaHon'have'been'
prepared'by'HWBOT'based'upon'established'industry'safety'standards'and'recognized'resources.'
Although'HWBOT'deems'the'data'in'these'documents'accurate,'HWBOT'cannot'be'held'liable'
should'their'content'fail'to'meet'the'legal'sHpulaHons'applicable'in'any'jurisdicHons'it'may'be'
applied'into.''
'
The'HWBOT'LN2'CerHficaHon'presentaHons'are'subject'to'revision.'Visit'our'website'to'ensure'that'
you'have'the'latest'version.'
'
' Copyright'HWBOT'2015'

3. Course summary
1. About'Liquid'Nitrogen'(reminder)'
2. LN2'for'Overclocking'&'Safe'Use'
a. Vocabulary'
b. Usage'flow'
c. PPE'
3. General'manipulaHon'rules'
4. Personal'use'of'LN2'at'home'
5. To'go'further'
Copyright'HWBOT'2015'

4. About Liquid Nitrogen (reminder)
• LN2'='Liquid'Nitrogen'
• Cryogenic'liquid'
• Boiling'point'below']150°C'
• Most'used'cryogenics'gases:'nitrogen(LN2)'&'
helium(LHe)'
• Evaporated,'volume'='x700'(raHo'1:700)'
• Colourless,'Odourless,'Tasteless'
• LN2'Temperature:']196°C'or']320°F'
• Non'flammable,'non'explosive,'non'toxic'
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5. LN2 use for overclocking
Vocabulary'
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Tank'/'Ranger' Dewar' Thermal'Flask' Container'

6. LN2 use for overclocking
Order'of'use'(any'other'way'is'wrong!)'
Copyright'HWBOT'2015'
Tank'/'Ranger' Dewar' Thermal'Flask' Container'

7. LN2 use for overclocking
Order'of'use'(any'other'way'is'wrong!)'
Copyright'HWBOT'2015'
Tank'/'Ranger' Dewar' Thermal'Flask' Container'
opHonal'

8. General manipulation rules
• Use'Thermal'Flasks'
• Use'metallic'flasks'only']'Never'use'glass'flasks!'
• Only'pour'LN2'from'the'flask'into'your'container'
• No'plasHc'cups,'paper'cups'and'other'DIY'techniques'
• Do'not'use'the'dewars'to'pour'into'your'container'
• Keep'an'organized'bench'desk'
• Don’t'play'with'LN2,'its'a'tool']'not'a'game!'
Copyright'HWBOT'2015'

9. LN2 for overclocking: at home
• Always'keep'the'room'well'venHlated'
• We'recommend'to'keep'a'window'open'at'all'Hmes.'
• Secure'your'bench'area'&'Keep'it'Hdy'
• Keep'the'LN2'out'of'reach'of'childrens'
• Do'not'allow'children'to'play'around'your'rig'
• Never'leave'LN2'or'your'OCed'system'unajended'
• If'possible'store'your'dewar'outdoors''
• Do'not'let'anyone'“play”'with'LN2'
Copyright'HWBOT'2015'

10. LN2 deware operation
• Only'use'dewars'designed'to'withhold'LN2'
• Only'fill'in'well'venHlated'areas'
• Never'overfill'a'dewar'
• Treat'dewars'with'care'and'use'adapted'
equipment'to'move'them'if'over'25L'
• Always'close'the'dewar'with'the'provided'cork,'
do'not'use'anything'else!'
Copyright'HWBOT'2015'

11. To go further
• AddiHonal'cerHficaHons'courses'available:'
• Next'CerHficaHon'Levels''
• Level'3:'LN2'for'Overclocking'“with'others”'
• Level'4:'LN2'for'Overclocking'“public'demonstraHons”'
• Train'others'
• Be'able'to'train'others'to'the'safe'use'of'LN2'for'overclocking'
Copyright'HWBOT'2015'

12. Thanks
QuesHons?'Contact'us.''
Pieter'Jan]Plaisier'
'
+886'970'726'470'
'
pieter@hwbot.org'
Copyright'HWBOT'2015'
Timothée'Pineau'
'
xyala@hwbot.org'
+886'970'203'741'

13. References
• Air'Liquid'Encyclopedia,'Physical'properHes'of'Cryogenics.'Retrieved'on'December'2014'from'hjp://encyclopedia.airliquide.com/help.asp?LanguageID=11'
• D.R.'LIDE,'Handbook'of'Chemistry'and'Physics,'88th'Ed,'Editor'CRC'Press,'2007]2008.'
• Gas'Encyclopedia,'Air'Liquide,'Editor'Elsevier,'1976.'
• Handbook'of'Compressed'Gases,'4th'Ed,'Editor'Kluwer'Academic'Pub,'1999.'
• InternaHonal'standards:'Gas'cylinders']'CompaHbility'of'cylinder'and'valve'materials'with'gas'contents']]'Part'1:'ISO'11114]1'(May'2012),'Part'2:'ISO'11114]2'(March'2001).'
• Linde'Group,'Handling'of'Cryogenic'liquefied'gases.'Retrieved'on'December'2014'from'
hjp://www.linde]gas.fr/internet.lg.lg.fra/fr/images/Handling%20of%20cryogenic%20liquefied%20gases201_72930.pdf'
• Linde'Group,'Handling'of'Gas'Cylinder.'Retrieved'on'December'2014'from'
hjp://www.linde]gas.fr/internet.lg.lg.fra/fr/images/Handling%20of%20Gas%20Cylinders%20at%20and%20aver%20Fire%20or%20Heat%20Exposure201_72931.pdf'
• Linde'Group,'Oxygen'deficiency.'Retrieved'December'on'2014'from'hjp://www.linde]gas.fr/internet.lg.lg.fra/fr/images/Oxygen%20deficiency201_72932.pdf'
• Linde'Group,'Handling'refrigerated'liquefied'nitrogen'in'transportable'cryogenic'receptacles.'Retrieved'on'December'2014'from'
hjp://www.linde]gas.fr/internet.lg.lg.fra/fr/images/Handling%20refrigerated%20liquefied%20nitrogen%20in%20transportable%20cryogenic%20receptables201_72944.pdf'
• Mayoclininc.org,'Frostbite:'first'aid.'Retrieved'on'January'2015'from'hjp://www.mayoclinic.org/first]aid/first]aid]frostbite/basics/art]20056653'
• Praxair,'Nitrogen'Refrigerated'Liquid.'Retrieved'on'January'2015'from'
hjp://www.praxair.com/~/media/North%20America/US/Documents/SDS/Liquid%20Nitrogen%20Medipure%20Gas%20N2%20Safety%20Data%20Sheet%20SDS%20P4630.pdf'
• The'university'of'Auckland,'Safe'storage'of'liquid'nitrogen.'Retrieved'on'February'2015'from'
hjps://cdn.auckland.ac.nz/assets/science/for/current]students/HR/health]safety]wellness/documents/SMOU%2021%20Safe%20Storage%20of%20Liquid%20Nitrogen
%20(2)%20(2).pdf'
• The'University'of'Auckland,'Cryogenic'Liquids.'Retrieved'on'February'2015'form'
hjps://cdn.auckland.ac.nz/assets/science/for/current]students/HR/health]safety]wellness/documents/SMOU18]Cryogenic%20Liquids.pdf'
• The'University'of'Auckland,'Safety'guidelines'for'cryogenic'materials.'Retrieved'on'February'2015'from'
hjps://cdn.auckland.ac.nz/assets/science/for/current]students/HR/health]safety]wellness/documents/cryogenic_materials_guide.doc'
• Web'Health'Center,'Different'Kinds'of'Asphyxia.'Retrieved'on'January'2015'from'hjp://www.webhealthcentre.com/HealthyLiving/first_aid_drown.aspx'
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