Describes the general requirements of a statistical process control (SPC) system. The general requirements of an SPC system shall encompass, but are not limited to; (a) Overall quality system; (b) Management commitment; (c) SPC system documentation; (d) Critical process nodes; (e) Gage characterization and capability; (f) Process characterization and capability; (g) Control system documentation; (h) On-line/off-line control, (i) Training; (j) Supplier SPC systems; (k) Calibration; (l) Preventive maintenance; (m) Self audit.