Quality Assurance for LHC Gas Systems

1. Quality Assurancefor LHC Gas Systems Stefan Haider / EP-TA1

2. Outline • Definitions • Where do we need Quality Assurance (QA) • How do we plan to do it? • Handle changes…. • Verify along the way • Specific activities for Gas • Conclusions Quality Assurance, S.Haider

3. Definitions • What is Quality? • Quality is the extent to which expectations of stakeholders as agreed upon with them are fulfilled. • Stakeholders: the experiments, EP-TA1-Gas section, operators, etc… • Agreement : we make the gas systems with the experiments requirements and also maintain them Quality Assurance, S.Haider

4. Where do we need QA We need to assure quality for: • Conformity to User Requirements • User approved requirements • Use of approved materials only • Etc • Cleanliness • Cleaning procedures • Procedures that assure the cleanliness of a large order • Clean assembly areas • Etc • Functionality • Individual parts • Modules • Operations procedures • Etc Quality Assurance, S.Haider

5. QA General • Recipe • Take User requirement for the gas systems (PRR) • Verify that UR’s are measurable! (e.g. are they for cleaning?) • Make an Assembly Breakdown Structure for each gas system • Make a Product Breakdown Structure for each system • Look for commonalities: e.g. Mixers have often the same URs • Make a production line for each sub-product • Mixer line, distribution, pump, purifier,..etc • Test each module against the Users and our own Requirements. • Make an acceptance test • For each module amongst ourselves • For the final gas system with the experiments user. Quality Assurance, S.Haider

6. Handle Changes !!! • Introduce a Engineering Change Request ECR • Has to be a single mechanism that transmits the change to all concerned parties • Every change has to pass through analysis, assignment, actual work, test, final report • Every change HAS to be traceable: who triggered it, when, why, etc Quality Assurance, S.Haider

7. Verify along the way • After every step we need control • Procurement • Check that we got what we ordered. Correct cleanliness, correct O-rings, dimensions, etc….. + fill check-lists • Assembly • Check that every component is on the right place, right assembly direction etc.. + fill check-lists • Test • Fill the according check-lists • Every rack that leaves our lab should have a folder with all these check lists attached to it. Quality Assurance, S.Haider

8. Specific activities for Gas • Gas hardware production • Gas control software production • Configuration management for parameters and constants that are needed to operate gas systems. Quality Assurance, S.Haider

9. Gas Hardware QA structure • Documents to be prepared • NUMBERING system and naming conventions • Work instructions for the assembly and labs • Engineering change request form • Test procedures • Test reports • Installation and commissioning • Operation and maintenance • Etc….. Quality Assurance, S.Haider

10. Conclusions • QA for gas is needed • With a QA procedure in place, • we make sure that the experiment get what they need • we shall increase transparency of our work • we make sure that during the production nothing is forgotten • We make sure that a maximum of control is available for all parties involved. Quality Assurance, S.Haider