2.8. Measurement equipment is fully documented with specific information (Manufacturer, Model Number, Serial Numbers) as required; generic description of the equipment type is not acceptable.
2.9. Unique Centerline and Control Limit values are provided for each SPCP Line Item. The default requirement is that control limits must be determined independently for each SPCP Line Item. In some rare instances, e.g. if all control charts for a given family of Rational Subgroups for a particular Quality Characteristic are extremely similar, it might be permissible to use the same control limits for all of them. Since this is an unlikely situation, SQE must investigate any occurrence of all-same control limits to determine whether or not it can be accepted. Also ensure that the control limits are consistent with the chart type (e.g. LCL = 0 for R charts with n = 4 or 5).