Grease Duct Light Test

To validate liquid tight integrity the international mechanical code imc requires a grease duct leakage test in section 506 3 2.

Grease duct light test.

1 1 these test methods evaluate the enclosure materials and the grease duct enclosure systems using the following test methods. Work lighting and other factors. The test involves passage of a light with not less than 100 watts through the entire section of ductwork to be tested listed ducts are exempt from this requirement. The fire engulfment test also tests the fastening methods.

A light test shall be performed by passing a lamp having a power rating of not less than 100 watts or 1500 lumens for energy. Outside should be dark enough so u can hardly see things than turn on the light in the duct and move it so you are sure that every angle is ok. Light test for duct leakage is the most common test and very authentic but there is a procedure to take into the consideration. A light test or an approved equivalent test method shall be performed to determine that all welded and brazed joints are liquid tight.

1 blower with speed control vfd to generate range of pressure flowrange of pressure flow 2 flow measuring devices flow grid flow station high flow flow grid flow station high flow orifice plate low flow. Noncombustibility fire resistance durability internal fire and fire engulfment with a through penetration fire stop. A light test shall be performed by passing a lamp having a power rating of not less than 100 watts. The permit holder shall be responsible to provide the necessary equipment and perform the grease duct leakage test.

4 1 5 a fire engulfment test uses a standardized fire exposure the time temperature curve of test methods e 119 to simulate a fire occurring on the outside of the grease duct and demonstrates the ability of the grease duct enclosure system to remain intact without a through opening. A light test or approved equivalent test method shall be performed to determine that all welded and brazed joints are liquid tight.