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Smart Infrared Inspection System Field Operational Test - Center for ...

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BRAKE ALERTS<br />

Brakes are responsible <strong>for</strong> a majority of the alerts issued by SIRIS (this could vary by<br />

site and environment) and are an important safety issue <strong>for</strong> trucks, buses and other<br />

large vehicles.<br />

When a vehicle passes through the system, SIRIS measures the temperature of the<br />

brakes through the rim. The brakes are compared to the criteria set <strong>for</strong> SIRIS and an<br />

alert can be issued <strong>for</strong> a hot or cold brake.<br />

Hot brakes can be caused by many different circumstances including but not limited<br />

to dragging brake components, air system defects, mechanical errors, failure of<br />

opposite brake, or driving preference. Cold brakes can also be caused by some of the<br />

same conditions including but not limited to suspension, mechanical or air supply<br />

issues; inoperative or out of adjustment; or incorrect or missing attachments.<br />

When a brake alert is issued, the operator should view the screen and the temperature<br />

data <strong>for</strong> the brakes. (S)He should view not only the brake temperature <strong>for</strong> the side that<br />

has been flagged but the in<strong>for</strong>mation <strong>for</strong> the brake on the opposite side of that axle. A<br />

brake on one side could be hotter due to an inoperative or faulty brake on the other<br />

side.<br />

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