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tigwelder_riskassessment [2017-10-01 18:43] miketigwelder_riskassessment [2017-10-01 19:15] mike
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 ====== TIG welder risk assessment ====== ====== TIG welder risk assessment ======
 +
 +This follows the template from the [[http://www.hse.gov.uk/risk/index.htm|HSE's risk management site]]
  
 ^ What are the hazards? ^ Who might be harmed and how? ^ What are you already doing? ^ Do you need to do anything else to control this risk? ^ Action by who? ^ Action by when? ^ Done ^ ^ What are the hazards? ^ Who might be harmed and how? ^ What are you already doing? ^ Do you need to do anything else to control this risk? ^ Action by who? ^ Action by when? ^ Done ^
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 Cautious estimate that 20% of that volume is taken by cupboards/tools/stuff, so actual volume of air in the room: V<sub>r</sub> = 71.37 * 0.8 = 57.096m<sup>3</sup> Cautious estimate that 20% of that volume is taken by cupboards/tools/stuff, so actual volume of air in the room: V<sub>r</sub> = 71.37 * 0.8 = 57.096m<sup>3</sup>
  
-Volume of oxygen after gas release: V<sub>o</sub> = 0.21 * (V<sub>r</sub> Volume of gas in cylinder) = 0.21 * (57.096m<sup>3</sup> - (20L * 200bar / 1000)) = 0.21 * (57.096m<sup>3</sup> - 4m<sup>3</sup>) = 11.15016m<sup>3</sup>+Volume of oxygen after gas release: V<sub>o</sub> = 0.21 * (V<sub>r</sub> Volume of gas in cylinder) = 0.21 * (57.096m<sup>3</sup> - (20L * 200bar / 1000)) = 0.21 * (57.096m<sup>3</sup> - 4m<sup>3</sup>) = 11.15016m<sup>3</sup>
  
 Resulting oxygen concentration: C<sub>ox</sub> = 100 * V<sub>o</sub> / V<sub>r</sub> = 100 * 11.15016 / 57.096 = 19.53% Resulting oxygen concentration: C<sub>ox</sub> = 100 * V<sub>o</sub> / V<sub>r</sub> = 100 * 11.15016 / 57.096 = 19.53%
tigwelder_riskassessment.txt · Last modified: 2017-12-13 16:11 by mike

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