First, read the English article below.

Turn the valve clockwise until it is hand-tight. This helps prevent any possible gas leaks from escaping the tank. If you smell something similar to rotten eggs or a skunk's spray, propane may be leaking from your tank. Use a pair of scissors to cut the plastic wrap-around off of the tank. Water can get trapped underneath the sleeve and cause rust to form. Rust damage can ruin the integrity of the tank, making it more prone to damage. Save the label since it will have important graphics and handling instructions you may want to consult later on. Any external damage could ruin the integrity of the propane tank overall. If you find signs of rust, dents, or peeling paint, replace your propane tank before you store it. Do not fill a tank that has been weathered or damaged. A propane tank past 10 years old needs to be re-qualified and should be checked that it's still safe for you to use. Even if there doesn't seem to be any damage, it may have internal wear and tear. After an initial inspection, have your tank checked every 5 years afterward. 

Now, please write a short abstract for it in Indonesian. Abstract:
Pastikan katup tangki tertutup ketika tidak digunakan. Lepaskan label untuk mencari karat. Periksa lecet atau cat yang terkelupas di tangki. Gunakan jasa profesional untuk memeriksa tangki yang berusia lebih dari 10 tahun.