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54 Cards in this Set
- Front
- Back
Firefighting Operations Bulletin 7
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“Thermal Imager”
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TICs enable firefighters to “see through” smoke-filled rooms by taking advantage of what?
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Greater optical depth in infrared region of electromagnetic spectrum compared to the visible region.
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Firefighters use TIC’s for the following:
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Search and rescue
Locating fires Locating escape routes Locating hot spots in salvage and overhauls operations Haz-Mat incidents |
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In general, infrared imaging systems are classified into four wavelength regions:
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The near infrared spectral range (NIR)
The short wavelength infrared region (SWIR) The mid-wavelength infrared region (MWIR) The long wavelength infrared region (LWIR) and it is in this spectral region that firefighting thermal imagers operate. |
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Firefighting thermal imagers are designed to measure what?
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Radiation that is emitted from objects, rather than radiation that is scattered by objects in the scene. Also, thermal imagers are designed to detect radiation emitted from objects corresponding to a particular temperature range.
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What are the two important reasons why firefighter thermal imagers utilize the long wavelength infrared region (LWIR):
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Sufficient emissions from objects at ambient temperatures.
Minimal loss due to ambient gases and particles. Infrared imagers which are designed for firefighting applications must also provide sufficient contrast so that the firefighters can identify objects (doors, windows, people, fire, etc.) in the image. |
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If you are looking through the TIC and you see an image that is white what does this mean?
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That you are looking at the hottest area in contrast. The cooler areas will be black. Keep in mind though, that the temperature differential may be a few degrees or a few hundred degrees.
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Will the TIC return a useable image if everything in the room is the same temperature?
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No, neither hot or cold.
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On what apparatus are TICs carried?
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Truck companies and rescue squads
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During exterior operations who should carry the TIC?
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The truck officers should consider carrying the TIC themselves as this will allow quicker exchange of information as conditions change.
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When should the TIC always be utilized and where should it be positioned?
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The TIC should be utilized on all structural fire incidents and, if possible, it should be operated directly behind or in close proximity of the attack line.
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When should the TIC be used ahead of the attack team?
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Never
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The TIC will show the user a:
One-dimensional view Two-dimensional view Three-dimensional view None of the above |
B. Two-dimensional view
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When using a TIC, which part of the room should be scanned first?
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The ceiling area should be scanned first and then the walls and floor.
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When operating with the attack line, TIC operators should consider scanning the area ____________, periodically allowing the operator to monitor possible changing conditions in the exit area.
In front of them Behind them Beside them Above them |
B. Behind them
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Which rescue squad teams should carry the TIC on structural fires?
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Both
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What is the primary use of the TIC:
Directing the attack line Rapid Intervention Salvage and Overhaul Search and Rescue |
D. Search and Rescue
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After each use of the camera, the battery should be recharged for a minimum of ___ .
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4 hours
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A digital read out of the temperature of the object framed by the target area is located in _____________ of the display screen.
Lower right Lower left Upper right Upper left |
A. Lower right
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The minimum reading of the TIC is:
32 degrees C 32 degrees F 100 degrees F 15 degrees C |
B. 32 degrees F
(0 degrees C) |
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The TIC can be cleaned with:
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A dampened cloth with a solution of water and mild detergent.
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Parts and service for the TIC are available from:
Facilities Maintenance On-duty Special Ops. BFC Fleet Maintenance On-duty Safety Officer |
B. Safety Officer
(202) 673-6432 |
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FIREFIGHTING OPERATION BULLETIN # 7
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THERMAL IMAGING CAMERAS
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What color are the cooler temperatures?
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Blue
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What color are the warmer temperatures?
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White
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As temperatures increase what color will the images be shown in?
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Yellow and red
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What temperature does high sensitivity mode operate up to?
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3000 F
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What will the TIC do when temperatures reach above 3000?
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The TIC will switch to the low sensitivity mode.
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Why does the TIC switch from high sensitivity to low sensitivity mode?
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If it didn’t the screen would white out.
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What does the operator need to know when operating the camera?
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Know what mode the camera is operating in and utilize the temperature read out and or temperature bar on screen to know what the temperature is of the area or object.
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What is shuttering?
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The TIC’s image may freeze on screen at times. The TIC is refreshing the focal plane in order to operate properly. This function is normal.
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In what mode might the TIC do “shuttering” more often?
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Low sensitivity mode
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What will the TIC not transmit through?
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Glass and Water
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Where do you never aim the TIC?
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At the sun - may cause severe damage to the unit
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What is the sensitivity distance of the TIC?
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3’ to infinity
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During a field test at TA flashover simulator what Temperature range was displayed on the TIC prior to rapid increase of temperature and flashover?
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4000 to 4500 The TIC was aimed at the ceiling
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How many models of TICs does the department have?
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3
MSA 5200 Eagle imager 160 Scott Eagle imager II Scott |
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How much does the MSA 5200 weigh and how long is the operating time?
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Weight is 2.8lbs
Operating time is 2 hours at nominal 720F |
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On the MSA 5200 where does the L appear indicating its operating in the low sensitivity mode?
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Lower left corner
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On the MSA 5200 what color is the shutter indicator and where does it appear?
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Green and appears in the upper left corner
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When the MSA 5200 is “shuttering” how long will the image temporarily freeze?
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1 second
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The MSA 5200 on screen operating Quick temp spotter and vertical bar gauge spans temperatures from ------- to --------- in high sensitivity and from --------- to --------- in low sensitivity.
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From 0 to 300 F in high sensitivity
From 0 to 1000 F in low sensitivity |
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On MSA 5200 where is the battery status located and how many LED lights are in a row?
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Lower right corner
3 LED lights are in a row |
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On the MSA 5200 what color are the LED lights and what are they indicating?
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Green –full battery
Yellow - marginal power left Red 15 minutes battery power left Red flashing –indicates battery power shut down in about 1 minute |
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How much does the Eagle imager 160 weigh and how long is the operating time?
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4.2 lbs
3 ½ hours |
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On the Eagle 160 where is the battery status indicator?
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Upper right corner
The bar indicates battery charge by showing a lighter color than the screen itself. |
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On the Eagle 160 what does the EI icon indicate?
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Temperature above 200 F
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The Eagle 160 does utilize color- When?
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High sensitivity mode 1000* F color RED
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How much does the Eagle Imager II weigh and how long is the operating time?
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Weight 4.2 lbs
Operating time 1 hour |
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Where is the battery status indicator on the Eagle Imager II?
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Upper right corner
When fully charged the battery shaped icon will appear completely white, as the battery is used it will change incrementally to black. |
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On Eagle Imager II where will the low battery icon appear?
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Center of screen as a triangle with an empty battery shape inside.
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On Eagle Imager II if you see a yellow triangle with an exclamation point towards the center what does that indicate?
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That the core temperature is at a critical level and the unit needs to be removed from the area to prevent damage.
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The Eagle II TIC has 3 standard settings for color palette what are they?
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1. Gray monochrome- black cool – white hot
2. Autumn- represents infrared as dark red (cool) – bright yellow (hot). 3. Full color- represents infrared as blue (cool) to bright yellow (hot). |
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On Eagle II TIC what is the infotherm option?
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When the infotherm option is chosen the radiometry option is included automatically. This feature is a special combination of the gray monochrome and the full color option where objects in excess of 450 F appear as shades of red.
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