Understanding NRT- Reading 1- 2 of 2- Radiogaphic Testing A

Film Packaging
Radiographic film can be purchased in a number of different packaging
options. The most basic form is as individual sheets in a box. In preparation
for use, each sheet must be loaded into a cassette or film holder in the
darkroom to protect it from exposure to light. The sheet are available in a
variety of sizes and can be purchased with or without interleaving paper.
Interleaved packages have a layer of paper that separates each piece of film.
The interleaving paper is removed before the film is loaded into the film
holder. Many users find the interleaving paper useful in separating the sheets
of film and offer some protection against scratches and dirt during handling.
Industrial x-ray films are also available in a form in which each sheet is
enclosed in a light-tight envelope. The film can be exposed from either side
without removing it from the protective packaging. A rip strip makes it easy to
remove the film in the darkroom for processing. This form of packaging has
the advantage of eliminating the process of loading the film holders in the
darkroom. The film is completely protected from finger marks and dirt until the
time the film is removed from the envelope for processing.
Charlie Chong/ Fion Zhang