Free bump for Norway. My great grandfather owned a jewelry store in Oslo. Unfortunately I'm so far removed from the culture that the only Norwegian thing I have been doing is making fun of people that are complaining about the -15 degrees Fahrenheit w/ wind chill.
...that's a myth...Okay crap puns aside you're totally safe. They have burst disks but they are guerrilla's low profile version. Pressurized cylinders and their regulators are very heavily regulated by the government, if it wasn't safe you wouldn't be able to buy it.