TwinTurbo.NET: Nissan 300ZX forum - That looks very salvagable. Clean up extinguisher residue
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Subject That looks very salvagable. Clean up extinguisher residue
     
Posted by Gordo NA2LS Daytona on May 22, 2019 at 10:52 AM
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In Reply To New project car. Anyone ever recover a fire damaged engine? posted by Polish on May 21, 2019 at 07:53 PM
     
Message before you decide to do anything further:

Dry chemical fire extinguishers leave behind a sometimes corrosive powder and therefore must be cleaned as soon as the fire department deems the building safe. Follow these steps:

Sweep or vacuum up loose residue.

Break down the silicone found in dry chemical fire extinguishers by spraying the remaining residue with isopropyl alcohol diluted by half with warm water. Let the solution work for a few minutes, and then rinse with water.

For monoammonium phosphate-based extinguishers, neutralize these dry chemicals by washing with hot water and baking soda. Let the solution work for a few minutes, and then rinse with water.

For sodium bicarbonate and potassium bicarbonate-based extinguishers, neutralize these dry chemicals by applying a solution of 98 percent hot water and 2 percent vinegar. Let the solution work for a few minutes, and then rinse with water.

Clean the area with soapy water and rinse. Blow dry the area to remove excess water and let it finish air drying completely.

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