Features January 2018 Issue

Preventing Emergency Flare Fizzle

We’ve been enjoying desert-dry gasoline for five years, courtesy of silica gel vent driers from H2OUT (see “EPA Mandate Sparks Fuel-Vent Filter Test,” Practical Sailor, January 2013). As a result, carburetor corrosion and jet plugging have been eliminated. PS diesel testers have report reduced condensate water and corrosion. We tested H2Out space driers against desiccants and dehumidifiers (“Dehumidifier Field Tests,” Practical Sailor, June 2017) and concluded they had insufficient capacity for cabin drying. However, we quietly put one to work, protecting our flares. Although marine signal flares are waterproof, are packaged in plastic bags, and include deliquescent ingredients in the formulation, it is well known that by the expiration date, as many as half will not function. When we cleaned out our new-to-us boat 10 years ago, we discovered a package of four Orion Hand Held Signal Flares stored in a damp transom locker. They looked shaky, so we tested them, still a year short of expiration. Three of the four flares lit, but only one burned properly. The others sputtered, one going out and the other burning long and dull. This time, with fresh flares, we included an H2OUT SD109 space drier inside the bag and stored them in a dry cabin locker.

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