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2. Unsafe firearm and cartridge combinations - Wikipedia

   en.wikipedia.org/wiki/Unsafe_firearm_and...

   Another example of an unsafe firearm and cartridge combination is the firing of saboted rounds in firearms with muzzle devices (such as a flash suppressor, muzzle brake, or choke) unless the muzzle device has been specifically designed for safe use with that particular type of saboted ammunition (see Saboted ammunition and muzzle devices below).

3. Firearm malfunction - Wikipedia

   en.wikipedia.org/wiki/Firearm_malfunction

   A dud (also a misfire or failure to fire) occurs when the trigger is pulled but the primer or powder in the cartridge malfunctions, causing the firearm not to discharge. Dud rounds can still be dangerous and should be deactivated and disposed of properly. [citation needed]

4. Safety (firearms) - Wikipedia

   en.wikipedia.org/wiki/Safety_(firearms)

   The most common form of safety mechanism is a switch, button or lever that when set to the "safe" position, prevents the firing of a firearm. [1] Manual safeties are as varied as the designs of firearms themselves, but the two most common mechanisms are a block or latch that prevents the trigger and/or firing mechanism from moving, and a device ...

5. Safe-cracking - Wikipedia

   en.wikipedia.org/wiki/Safe-cracking

   A safe may be compromised by using a manufacturer-set combination. Known as try-out combinations, these allow an owner initial access to their safe in order to set a new unique one. Sources of try-out combinations exist by manufacturer. Other easy-to-guess combinations include a birthdate, street address, or driver's license number.

6. Tap (valve) - Wikipedia

   en.wikipedia.org/wiki/Tap_(valve)

   Faucet is the most common term in the US, similar in use to "tap" in British English, e.g. "water faucet" (although the term "tap" is also used in the US). Spigot is used by professionals in the trade (such as plumbers), and typically refers to an outdoor fixture.

7. Powder-actuated tool - Wikipedia

   en.wikipedia.org/wiki/Powder-actuated_tool

   In the case of hull breaches, these tools fastened steel plates over damaged areas. [3] These tools were developed by Mine Safety Appliances , for the United States Navy. [ 4 ] Powder-actuated tools were investigated and used prior to this development; they were used in anti-submarine warfare during the First World War and were the subject of a ...

8. Safety cabinet - Wikipedia

   en.wikipedia.org/wiki/Safety_cabinet

   If the safety cabinet is connected to a 24-hour technical exhaust air system, then the hazardous area is limited to the inside of the cabinet. To prevent damage to the cabinet by corrosion, no acids or alkalis may be accommodated in this type of cabinet: TRbF Appendix L: Storage equipment in working areas (safety cabinets)/ points 4.1 and 4.2 ...

9. Chamber pressure - Wikipedia

   en.wikipedia.org/wiki/Chamber_pressure

   Within firearms, chamber pressure is the pressure exerted by a cartridge case's outside walls on the inside of a firearm's chamber when the cartridge is fired. The SI unit for chamber pressure is the megapascal (MPa), while the American SAAMI uses the pound per square inch (psi, symbol lbf/in 2) and the European CIP uses bar (1 bar is equal to 0.1 MPa).