15.5. Operation Process Charts. An operation process chart of seed preparation is shown in Fig. 15.1. It will be used to demonstrate the methods of chart design and its use.
Operation process charts can be prepared on plain sheets of paper of sufficient size to include all the required operations, or a paper of sufficient size to include all the required operations, or a form such as shown can be used. The chart type is material,man,or machine, indicating the type of procedure being charted. The method is present, proposed, of revised, indicating existing conditions,proposed changes, or revised procedure developed after previous study. Movement of materials is from left to right on horizontal lines and down on vertical lines unless otherwise indicated by arrows. The main flow should begin at the top of the sheet and proceed straight downward. Material added to the main line of flow is indicated by a horizontal line to the left of the main-line flow. Material removed is indicated by a horizontal line to the right of the main flow line. Conventional details and their meaning are shown in Fig. 15.2.