Design, Manufacture, Transport and Integration on-site in Chile of ALMA Antennas

1. Design, Manufacture, Transport and Integration on-site in Chile of ALMA Antennas • CRE Policy & Labelling • For ALMA Antenna Project • Progress Meeting # 05 • Dated June 21th, 2006

2. Change Request Policy

3. CRE Policy : recall on history • Issue of Change Request policy was first mentioned by ESO at PM2 as : • The requirements for change control are defined in the SOW • ESO want to have a light procedure and to avoid burden of unnecessary work • The Change request policy is to be described as part of the Configuration Control Plan (DRD-03). • AEM submitted a proposal to ESO on 2006/04/13: TM05 • Introduction of Class A and Class B changes • Class A change is applied to major changes and requires formal ESO approval before starting the implementation. • Class B change is applied to minor change: no CRE is issued to ESO, AEM implements the change. The change is then reported to ESO within released documents (as part of document change record). • ESO answered to AEM proposal on 2006/06/01: TM 26 • ESO confirms that configuration control is to be applied from PPDR closure. • ESO requests information on Class B change prior to implementation. • ESO wants to formally agree on change classification. • New proposal for class A & B definition (nearly all changes will be class A)

4. CRE Policy : New proposal from AEM (1/2) • Simplify : remove the Class A & B and propose a unique CRE as per SOW : • The issue of classification will introduce additional discussions with ESO and will introduce unnecessary delays. • Apply the Configuration Control as defined by the SOW section 6.6 • No need for further discussions and delays in order to define new procedures. • Configuration Control to be applied to documents as defined by the SOW: • SOW Section 6.5: “All applicable technical documents, which define the end product, shall be put under configuration control at PPDR”. • SOW appendix 1 defines the project milestone at which a document becomes applicable.

5. Documents for approval by ESO Documents for review by ESO CRE Policy : New proposal from AEM (2/2)

6. Labelling

7. Requirements on labelling • ESO Technical specification (sections 9.5 & 9.6) : • As a general rule the main parts and all exchangeable units shall be equipped with nameplates which are visible after installation of the part/unit and which contain the following information: • Part/unit name • Drawing number including revision • Serial number • Manufacturing month and year • Name of manufacturer. • Alternatively a system of marking based on barcodes or similar system may be used upon approval by ALMA • All cables and switches, junction boxes, sensors, and similar equipment shall be labeled. • Electrical cabinets, switch panels, UPS, and all electrical equipment which can be manually operated or is relevant for safety shall be labeled in English and Spanish. • SOW (section 6.5): • Produce a Configuration Item marking plan which uniquely identifies each configuration item according to the requirements of Section 9 of AD 01 (ESO Technical specification).

8. Proposal on Labelling • Labelling shall be applied officially at : • Complete antenna level • Configuration Item (CI) level (main parts) • LRU level (Lowest Replaceable Unit) (exchangeable units) • Consumable parts are not labelled, the reference to the lot number will appear in the log of activities. • ESO provides the labelling for all the parts delivered to AEM for integration with the antenna. • Some specific marking could be available on parts at lower level than LRU : • To be decided on case by case, according to the pertinence and feasibility. • The marking may not follow AEM rules : e.g. manufacturer marking. • The PDM shall trace (as-Built Status): • Any update at LRU level • Updates at lower level than LRU : log and batch or lot number. • Information on Part/unit name, Drawing number including revision, Serial number, Manufacturing month and year and Name of manufacturer will be provided by WAND and are not present on the labelling plate • Configuration Item marking plan to be included in the configuration control plan (DRD-03).

9. ALMA EUROPEAN CONSORTIUM Configuration Item reference (from PDM) CONFIG. ITEM NUMBER : ANTD-3320020 Hierarchical part numbering for this part (from PDM) PART & SERIAL NUMBER : 3.182 Serial number for this part number Part number within this configuration item Labelling plate (1/2) • The marking of parts could be implemented in different type and format : • Rigid aluminium plate • Flexible aluminium plate • Sticker • Gravure • Printed paper inside a plastic bag (for cable Proposed labelling plate (at CI and LRU level)

10. Proposal on Labelling • AEM proposes a numbering scheme for parts : • The first number identifies the generic part within the generic parts list for this configuration item. • The second number (after the “.”) is the instance number for this generic part. It identifies the serial production number for the part if the part is specifically produced for ALMA or the subcontractor serial production number if the part is a commercial product (e.g. electric motor). • This labelling do not mention antenna number : • Parts are not attached to a specific antenna • From the information on the label, Wand shall identify the antenna number where this part is installed. • Also Wand shall provide the complete list of parts together with their complete references for a given antenna number. • A specific label (big plate, e.g., on the antenna base) will identify the antenna number. • Wand shall be updated when a part is moved from one antenna to another antenna. • The model digit (F, P) is not present on the label but is available in Wand database.

11. ALMA EUROPEAN CONSORTIUM CONFIG. ITEM NUMBER : ANTD-3315010 PART & SERIAL NUMBER : 2 / 46127R09-2007 Labelling plate (2/2) • Each consortium member shall : • Enter in the PDM tool the generic parts list for its configuration items (to be taken from drawings). • Provide all the label plates for its parts and perform their labelling. • Update the PDM tool with the parts labelling information. • Keep updated these information inside the PDM tool. • In case of off-the-shelf equipment (e.g. electrical engine), in addition to the subcontractor plate, AEM will add its own labelling : Manufacturing serial number (provided by Manufacturer) Hierarchical part numbering for this part (*)

12. Source & Destination label Source & Destination label Cable label Cable label Cable label Cable label 5 meters 5 meters 5 meters Source & Destination label Cable label Cable labelling proposal • The labelling for cables shall contain : • The labelling of the part : cable (a specific product is identified as “Cabling”) • The reference of both end connectors and equipment : some end equipment could be outside ANTD project, compliance to be checked. • The cable labelling shall be repeated every 5 meters. • Source and destination defined by Configuration Item reference and part & serial number (e.g. ANTD-3335030_03.15). • Multiple board and port devices : the board number is identified with /02 and the port number with /05 (e.g. ANTD-3335030_03.15/02/05). ANTD-3335030_03.15/02/05 ANTD-3335030_02. 5/01 ANTD-3350030_02.21