One of the most important skills an EA needs to learn besides drafting is operating reproduction equipment or machines. The quality of a reproduced copy (usually called BLUEPRINT) measures the accuracy, completeness, and conformance to applicable standards of an original or traced drawing. All EAs therefore should be familiar with the aspects of performing this skill and should develop competency through practice and experience. This section discusses the various aspects of the reproduction process and maintenance of a typical reproduction machine.

Regardless of the type of reproduction machine used, it should be positioned in a room in such a manner as to ensure the best possible ventilation. The machine should be set against an outside wall and an exhaust tube or an exhaust vent provided with a fan should be installed since ammonia is used in the developing process.

If possible, less light is preferable because light-sensitive paper is used. All supplies of sensitized paper and other materials for repro-duction should be kept in a dehumidified, cool, and dark storage area. It is good practice to date the supplies so as to use the oldest stock first. Heat is a major factor to consider, no matter what machine is used.

Ventilation should be sufficient throughout the room, since the prints, even after they emerge from the machine, are saturated with ammonia fumes. The fumes from ammonia are very powerful, and personnel should avoid excessive inhalation. Chemicals used in developing solutions that come in powder form should be stored the same as sensitized materials. Ammonia should be stored in shatterproof bottles.

Ammonia fumes are extremely toxic! Burns, as well as temporary blindness, can result if you are careless while handling the solution.

Since reproduction machines are energized with electricity, you need a firm understanding of electrical safety. NEVER touch an energized electrical plug, switch, or any part of electrically operated equipment with wet hands or while standing in water or on a wet floor. If the machine should become wet or be in contact with water while in use, you should disconnect the electrical power source before attempting to clean up the area. It is also important for qualified and certified personnel to inspect electrical outlets and connections frequently for obvious signs of damage.