Diese Präsentation wurde erfolgreich gemeldet.
Wir verwenden Ihre LinkedIn Profilangaben und Informationen zu Ihren Aktivitäten, um Anzeigen zu personalisieren und Ihnen relevantere Inhalte anzuzeigen. Sie können Ihre Anzeigeneinstellungen jederzeit ändern.
Extinguishing fires by Jasmine Rivera & Amanda Warren Module 3
Fire Extinguishing agents <ul><ul><li>Water </li></ul></ul><ul><ul><li>Carbon Dioxide (CO2) </li></ul></ul><ul><ul><li>Mul...
Water <ul><li>Pros </li></ul><ul><li>Effective on Class A fires </li></ul><ul><li>Plentiful </li></ul><ul><li>Removes heat...
Carbon dioxide (CO2) <ul><li>Pros </li></ul><ul><li>Effective on both Class B & C Fires </li></ul><ul><li>No residue </li>...
Dry chemical <ul><li>Pros </li></ul><ul><li>Sodium bicarbonate (baking soda) </li></ul><ul><li>Very effective on Class B &...
Multipurpose dry chemical <ul><li>Pros </li></ul><ul><li>Effective on Class A, B & C fires </li></ul><ul><li>Interrupts ch...
Halon 1301 <ul><li>Pros </li></ul><ul><li>Bromotrifluoromethane </li></ul><ul><li>Removes heat </li></ul><ul><li>Non-toxic...
Halon 1211 <ul><li>Pros </li></ul><ul><li>Effective on Class A, B & C fires </li></ul><ul><li>No residue </li></ul><ul><li...
Nächste SlideShare
Wird geladen in …5
×

Module3 - Extinguishing Fires

333 Aufrufe

Veröffentlicht am

  • Als Erste(r) kommentieren

  • Gehören Sie zu den Ersten, denen das gefällt!

Module3 - Extinguishing Fires

  1. 1. Extinguishing fires by Jasmine Rivera & Amanda Warren Module 3
  2. 2. Fire Extinguishing agents <ul><ul><li>Water </li></ul></ul><ul><ul><li>Carbon Dioxide (CO2) </li></ul></ul><ul><ul><li>Multipurpose Dry Chemical </li></ul></ul><ul><ul><li>Halon 1301 </li></ul></ul><ul><ul><li>Halon 1211 </li></ul></ul>
  3. 3. Water <ul><li>Pros </li></ul><ul><li>Effective on Class A fires </li></ul><ul><li>Plentiful </li></ul><ul><li>Removes heat </li></ul><ul><li>Non-toxic </li></ul><ul><li>Inexpensive </li></ul><ul><li>Cons </li></ul><ul><li>May spread Class B fires </li></ul><ul><li>May carry pollutants in run-off water </li></ul><ul><li>Conducts electricity </li></ul><ul><li>Freezes in cold climates </li></ul>
  4. 4. Carbon dioxide (CO2) <ul><li>Pros </li></ul><ul><li>Effective on both Class B & C Fires </li></ul><ul><li>No residue </li></ul><ul><li>Relatively inert </li></ul><ul><li>Reduces oxygen to less than 15% </li></ul><ul><li>Cons </li></ul><ul><li>Toxic to humans >4% by volume </li></ul><ul><li>Dissipates rapidly-allows reflash </li></ul><ul><li>Not the best agent for deep-seated fires </li></ul>
  5. 5. Dry chemical <ul><li>Pros </li></ul><ul><li>Sodium bicarbonate (baking soda) </li></ul><ul><li>Very effective on Class B & C fires </li></ul><ul><li>Interrupts chemical reactions </li></ul><ul><li>Not considered toxic </li></ul><ul><li>Cons </li></ul><ul><li>Obscures vision </li></ul><ul><li>Absorbs moisture and may cake within </li></ul><ul><li>May be irritating </li></ul><ul><li>Not effective on deep-seated Class A </li></ul><ul><li>Leaves residue </li></ul>
  6. 6. Multipurpose dry chemical <ul><li>Pros </li></ul><ul><li>Effective on Class A, B & C fires </li></ul><ul><li>Interrupts chemical reactions </li></ul><ul><li>Non-conductive </li></ul><ul><li>Ammonium phosphate </li></ul><ul><li>Cons </li></ul><ul><li>More irritating then ordinary dry chemical </li></ul><ul><li>Obscures vision </li></ul><ul><li>Nozzle pressure may causing burning liquids to splash </li></ul>
  7. 7. Halon 1301 <ul><li>Pros </li></ul><ul><li>Bromotrifluoromethane </li></ul><ul><li>Removes heat </li></ul><ul><li>Non-toxic </li></ul><ul><li>Inexpensive </li></ul><ul><li>Cons </li></ul><ul><li>May spread Class B fires </li></ul><ul><li>May carry pollutants in run-off water </li></ul><ul><li>Conducts electricity </li></ul><ul><li>Freezes in cold climates </li></ul>
  8. 8. Halon 1211 <ul><li>Pros </li></ul><ul><li>Effective on Class A, B & C fires </li></ul><ul><li>No residue </li></ul><ul><li>Used in portable fire extinguishers </li></ul><ul><li>Interrupts chemical reactions </li></ul><ul><li>May be sprayed (boiling point: 25 degrees F) </li></ul><ul><li>Cons </li></ul><ul><li>Must be used at >5%by volume </li></ul><ul><li>Vapor density : 5.7 (collects in pits & low areas) </li></ul><ul><li>Toxic decomposition products are generated by fire </li></ul><ul><li>Production restricted currently due to depletion of ozone layer </li></ul>

×