TOP-STATS

Trinity Operating Procedures - TOPs

TOP-STATS: Statistical Techniques

Rev: 12/06/2017

Scope: This procedure covers the use of statistical techniques throughout the company's quality system.

Procedure:

STEP WHO WHEN INFO TO USE WHAT TO DO

1 Any team member Upon having an idea for using SPC or should a customer Purchase Order require SPC process monitoring Own ideas or research Make suggestion to QA Manager regarding use of SPC to help control the Production Process.

2 QA Manager Upon receiving suggestion (or having own idea) for using SPC Suggestion; own ideas or research Review idea and consider how the Production Process can improve by using statistical analysis. Discuss with the process owners, QC Supervisors, Production Supervisors or Superintendent.

3 QA Manager possibly with others Upon deciding to implement SPC on a process Prints, product dimensions and tolerances Develop and implement a data collection configuration into SPC Software Program, Infinity Proficient or equivalent.

4 QA Manager After enough data has been gathered to generate analytical statistics Results of data collection Review the effectiveness of the new data collection configuration; determine if this configuration is collecting the information needed to analyze the process.

If decide to discontinue, do so; if decide to continue system with modifications, go back to step 3; if decide to permanently continue system, go to step 5

5 QA Manager For forge and machine jobs requiring capability analysis or for internal capability analysis SPC Software Outputs Review the data collected utilizing SPC Software using capability charts, x-bar-r, historgrams, Pk, Cpk or other Software generated charts or reports to determine process stability.

6
QA Manager, Production Team Member After reviewing SPC Software reports and charts Charts and reports from the SPC Software Program Analyze the trends and control during the production process. Ask operators to note causes of out-of-control events. See ISPEC-STATS for other trend and control events analysis tools. Discuss and Implement improvement opportunities. Request a Corrective Action per TOP-CARRR as appropriate.

7
QA Manager As deemed appropriate Charts and reports from the SPC Software Program Review reports with customer if required. Provide customer plan of action if warranted.

Revision history:

Release Date	Description of Change	Owner	Approver
12/06/2017	Updated to comply with revised Quality Manual and new TOPs format.	Tim Ellis	Todd Sheppard

Documents are controlled only when viewed on-line at trinityforge.com in the original English -- printed copies or translations are not controlled documents.
?2017 Trinity Forge, Inc.

STEP	WHO	WHEN	INFO TO USE	WHAT TO DO
1	Any team member	Upon having an idea for using SPC or should a customer Purchase Order require SPC process monitoring	Own ideas or research	Make suggestion to QA Manager regarding use of SPC to help control the Production Process.
2	QA Manager	Upon receiving suggestion (or having own idea) for using SPC	Suggestion; own ideas or research	Review idea and consider how the Production Process can improve by using statistical analysis. Discuss with the process owners, QC Supervisors, Production Supervisors or Superintendent.
3	QA Manager possibly with others	Upon deciding to implement SPC on a process	Prints, product dimensions and tolerances	Develop and implement a data collection configuration into SPC Software Program, Infinity Proficient or equivalent.
4	QA Manager	After enough data has been gathered to generate analytical statistics	Results of data collection	Review the effectiveness of the new data collection configuration; determine if this configuration is collecting the information needed to analyze the process. If decide to discontinue, do so; if decide to continue system with modifications, go back to step 3; if decide to permanently continue system, go to step 5
5	QA Manager	For forge and machine jobs requiring capability analysis or for internal capability analysis	SPC Software Outputs	Review the data collected utilizing SPC Software using capability charts, x-bar-r, historgrams, Pk, Cpk or other Software generated charts or reports to determine process stability.
6	QA Manager, Production Team Member	After reviewing SPC Software reports and charts	Charts and reports from the SPC Software Program	Analyze the trends and control during the production process. Ask operators to note causes of out-of-control events. See ISPEC-STATS for other trend and control events analysis tools. Discuss and Implement improvement opportunities. Request a Corrective Action per TOP-CARRR as appropriate.
7	QA Manager	As deemed appropriate	Charts and reports from the SPC Software Program	Review reports with customer if required. Provide customer plan of action if warranted.