By law, when a propane tank reaches 12 years of age, it can no longer be filled. We see this frequently at our propane platform here in Peabody, and with the Fourth of July weekend coming up, we figured weâd share with you how to tell whether your grill tank is out of date.he only thing youâll need is the manufacturing date. As of the day of this post, any tank with a manufacture date before 07-01 we would not be able to fill. If a tank is more then 12 years old, it cannot be filled.
The noun CUMULONIMBUS CLOUD has 1 sense: 1. a dark cloud of great vertical extent charged with electricity; associated with thunderstorms. Familiarity information: CUMULONIMBUS CLOUD used as a noun is very rare.
Cumulonimbus calvus clouds have some features like nearly all cumulonimbus clouds and some of them are mentioned below: 1  They are very large, dark and threatening. 2  They have a sort of mushroom like appearance, even at this stage. 3  The top is the significant part because it shows how mature the cloud actually is.umulonimbus calvus clouds are sort of like the juveniles of the storm cloud world. Cumulonimbus clouds are always large and looming. When a cumulonimbus cloud matures, its top changes shape.