The general requirements of an SPC system shall encompass, but are not limited to, the following elements:
- 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
