Safety with Cylinder:

High pressure gas cylinders are made from steel or Aluminium alloys fitted with valves. The contents are identified by adhesive labels, stenciling and a system of color coding. The following Information is marked on each cylinder by permanent stamping:

Cylinder Marking
Filling pressure
Test pressure
Manufacturer and country of Origin
Serial Number
Stamp of official authority
Date of previous pressure tests and/or inspections with the stamps of the testing/inspection authorities.
Cold rolled sheets, strips and coils.

These marks must never be removed or defaced. Cylinders can only be filled if they carry the correct information.

Safety with Acetylene:

When calcium carbide and water are mixed, acetylene and lime sludge are produced. Acetylene burns in air, with a smoky flame and when burning it develops a lot of heat at high temperature. Mixtures of acetylene and air are very easy to ignite or explode, for example by a spark, small flame or hot spot.

Safeguards:

Ventilate areas where acetylene may be present
Do not smoke
Do not produce sparks
Do not produce hot spots
Use only explosion-proof electrical equipment
Do not tolerate acetylene leaks.
Avoid producing air/acetylene mixtures.
Do not allow air to enter acetylene circuits.
Purge air from acetylene circuits with nitrogen before admitting acetylene.
Before beginning maintenance work, purge acetylene circuits with nitrogen.