Spark proofing a fridge: How do I go about spark proofing a fridge for storage of hydrogen peroxide? Can a refrigerator not on ground floor be spark proofed?

Spark proofing a fridge: How do I go about spark proofing a fridge for storage of hydrogen peroxide? Can a refrigerator not on ground floor be spark proofed?
Hydrogen peroxide storage: I have stored H2O2 in the fridge in the Chem Prep room for years but recently I have been part of discussions that say this should never be the case