East Coast Part Supplier and Warehouse Association Moderated Interchange Newsgroup > New Jersey
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Heat sensor labels for fire department ladders
These are visual warning labels furnished on all aluminum and fiberglass ladders since 1984. These labels are a heat sensitive material that will turn black if any heat is ever present that is greater than approximately 300 degrees F. The 300 degree F temperature is used because once aluminum fire ladder materials (6061-T6 alloy) reach this 300 degree F (even if only for a moment), the ladder material may have lost 25% of its load capacity. This heat exposure effect is not reversible in the ladder and can continue to accumulate over its entire life.
WARNING: All ground ladders aluminum and fiberglass should never be placed near apparatus exhaust systems. Placing any ladder near an extreme heat source can turn heat labels black without the ladder even being used in a fire scene. Many different heat sources from any part of an apparatus can expose a ladder and weaken its strength.
NOTE: If any heat sensor label becomes black, remove the ladder from service at once and have the ladder load tested before the ladder is ever used again. If the ladder passes the load test, replace the heat sensor and return the ladder to service. Replacement heat sensor labels should only be placed on ladders that have passed the load test. If the ladder does not pass the test, remove from service and destroy immediately. Contact Maine Fire Equipment Co., Inc. for details on replacement heat sensor labels.
REMEMBER: Heat sensor labels that look OK do not make the ladder safe to use. ONLY a ladder test can determine if any ladder is safe to use.
NOTE: As of 1994, NFPA 1932 now requires 4 heat sensors per ladder section. Each heat sensor has an expiration date printed on it. Any expired labels must be replaced only after a horizontal bend test has been performed on the ladder. Place 2 heat sensor labels below the 2nd rung from the top of each section inside the beam. (1 inside the right beam- 1 inside the left beam) Place the other 2 heat sensor labels (one with instruction label) below the approximate middle of the section inside the beam. (1 inside the right beam- 1 inside the left beam)
Contact Maine Fire Equipment Co. for replacement heat sensor labels at:
(***) 474-2992 or 877-336-FIRE
Multiple labels available (The picture shows a sheet of 50 labels, the $2.50 each price is for 1 label)
