Statement of Work for the procurement of the Collimator and Camera mirrors of the GTCAO WFC. Gran Telescopio de Canarias, S.A.

Transcription

1 OAPs SOW TITLE Statement of Work for the procurement of the Collimator and Camera mirrors of the GTCAO WFC Code : Issue : Date : No. of pages : 8 Gran Telescopio de Canarias, S.A. Instituto de Astrofísica de Canarias Centro Común de Astrofísica de La Palma Vía Láctea s/n Cuesta de San José s/n LA LAGUNA, TENERIFE, Islas Canarias BREÑA BAJA, LA PALMA, Islas Canarias Tfno Fax Tfno Fax gtc@iac.es

2 2 of 8 Approval control Prepared by Dolores Bello Developments Department Signed in the original copy Revised by F. Javier Castro López-Tarruella Head of Developments Department Signed in the original copy Approved by F. Javier Castro López-Tarruella Head of Developments Department Signed in the original copy Authorized by Pedro Alvarez Director Date: Signed in the original copy 18/08/10

3 3 of 8 Changes record Issue Date Section Page Change description All All First Edition Applicable documents Nº Document title Code Issue AD1 Collimator/Camera Mirror DR/AO-CR-WC-210/001 Reference documents Nº Document title Code Issue List of acronyms and abbreviations DDU GTC GTCAO ISO RFP WFC Delivery Duty Unpaid Gran Telescopio de Canarias Gran Telescopio de Canarias Internacional Standard Request for Proposals Wavefront corrector

4 4 of 8 CONTENTS 1. SUMMARY SCOPE OF WORK REQUIREMENTS OF THE PRODUCT ACCEPTANCE TESTS DOCUMENTATION REQUIREMENTS QUALITY ASSURANCE REQUIREMENTS PACKAGING, DELIVERY AND WARRANTY PERIOD... 7

5 5 of 8 1. SUMMARY This document stipulates the Statement of Work for the Collimator and Camera mirrors of the Wavefront Corrector of the System of the Gran Telescopio Canarias. 2. SCOPE OF WORK The scope of the work to be performed by the Contractor shall be: Fabrication, test, packaging and delivery of the Collimator and Camera mirrors. Delivery of the following components: o The Collimator and Camera mirrors packaged in re-usable boxes. o Three witness samples Delivery of the following documentation: o Material certificates of the mirror blanks o Cleaning procedure. o Coating removal procedure o Acceptance s report 2.1 Requirements of the product The Collimator and Camera Mirrors shall comply with the specifications defined in the applicable drawing AD1 and clarifications given hereafter. The three witness samples shall be Ø25 mm and 7mm thickness of the same material than the Collimator and Camera mirrors. They shall be polished and coated with the same processes than the mirrors. Witness samples shall be marked in a permanent way on the side surface with the sample number. The mark shall outstay all possible defined tests and still be easily readable Surface form specification The surface form is specified in units of fringes, assuming that the wavelength test is 632.8nm and that one fringe corresponds to λ/2, that is 316.4nm. The sagitta error and the irregularity (3/A/(B)) values apply to the whole clear aperture of the optics. The RMSi specification applies to any subaperture with the specified diameter within the clear aperture. This RMSi specification is the departure of the surface at the considered subapertures from the best fit spherical surface for each subaperture. This means that when measuring the surface with the interferometer, the RMSi shall be obtained after removing piston, tip-tilt and local defocus from the subaperture. 2.2 Acceptance tests The Contractor shall perform all the tests and inspections defined in the Acceptance Plan. The Contractor shall provide all the equipment needed for the tests. All the raw data obtained from

6 6 of 8 the inspection and test shall be archived, and delivered to GRANTECAN. The contractor shall also prepare and deliver to GRANTECAN a verification report including all the results. The Acceptance Plan shall include, at least, the following tests: Dimensional verification of the finished Collimator and Camera mirrors Measurement of the off-axis distance and radius of curvature of Collimator and Camera mirrors. Interferometric measurement of the full aperture surface irregularity functions of the Collimator and Camera mirrors. The spatial resolution of the measurement shall be small enough to capture high spatial frequency defects of the surface. Inspection of surface imperfections of Collimator and Camera mirrors Measurement of surface texture (roughness) of Collimator and Camera mirrors Coating spectral reflectance measurement of the witness samples Coating durability tests of the witness samples In case the coating shall be commercial off-the-shelf, the Contractor can provide the existing certificates about reflectance and environmental durability, including the spectral reflectance curve measured (spectral range µm wavelength) and the environmental tests performed. Witness samples have to be delivered in any case. GRANTECAN reserve the right to perform tests on the witness samples provided to verify the coating characteristics. In case of custom coating the reflectance and environmental durability tests are mandatory. The durability shall be tested by means of the test sequence indicated in Table 2-1. The reflectance shall be measured before and after the environmental test sequence. Table 2-1. sequence for verification of environmental durability of the coating step Number (from ISO ) Degree of severity Norm sample 1 sample 2 sample Adhesion 02 ISO X X X 2 1 Abrasion 02 ISO X 3 4 Solubility 01 ISO X 4 6 Cold 07 ISO X 5 7 Dry Heat 05 ISO X 6 5 Damp heat 07 ISO X Solvent Solubility 01 ISO X 8 2 Adhesion 02 ISO X X X GRANTECAN reserves the right to take part in all or part of the acceptance tests. Contractor shall deliver all the raw data obtained from the inspections/ tests as annex to the inspection/test reports.

7 7 of 8 Once the Collimator and Camera Mirrors have satisfactorily passed all the acceptance inspection and test and the Contractor has updated accordingly the documentation, the Factory Acceptance of the Collimator and Camera Mirrors shall be declared. 2.3 Documentation requirements English or Spanish shall be used both for text in drawings and documents. The Contractor shall use the International System of units or International System accepted units. Any exception shall be previously authorized by GRANTECAN S.A. and shall be widely used in engineering practices within the European Union. The following documentation shall be delivered: Cleaning procedure. A description of the recommended procedure to clean the optical surface o eliminate dust or usual dirty from the normal use of the mirrors. The document shall include the list of equipment required. Coating removal procedure. A description of the recommended process to remove the reflectance coating from the mirror substrate. GRANTECAN could recoat the mirrors during its life, with our own coating capabilities. report: A description of the performed tests with the results obtained and having as annex all the raw data obtained from the inspections/tests. The test report shall include a verification matrix. The performed tests shall be at least those described in the acceptance plan. 2.4 Quality assurance requirements The Contractor must be certified to be in accordance with some quality management standard (ISO 9000 or similar). As part of the quality control procedures, if a non-conformity arises at any moment during the development of the work, the Contractor shall immediately communicate it to the GRANTECAN S.A.. Also as part of the management control the Contractor shall designate a single person in charge of any the interaction with GRANTECAN S.A. This person shall maintain informed to GRANTECAN about the progress of the procurement, in particular at least the following milestones should be reported to GRANTECAN S.A.: Reception of the mirror blanks Start of the polishing End of the polishing Start of coating Start of the Acceptance tests 2.5 Packaging, Delivery and Warranty period The mirrors shall be packaged on re-usable boxes that can be used for storage of the mirrors after the required reception inspections at GRANTECAN until the final integration of the items in our system.

8 8 of 8 The Contractor shall deliver the items to GRANTECAN in terms DDU according the INCOTERMS The delivery address is: GRANTECAN S.A. Instituto de Astrofísica de Canarias c/vía Láctea s/n LA LAGUNA (Santa Cruz de Tenerife) SPAIN The Provisional Acceptance of the equipment shall be declared after the reception and inspection of the integrity of the items. GRANTECAN shall perform the inspection within 15 days of delivery; in other case the Provisional Acceptance shall be automatically declared. The equipment shall have a warranty period of two years starting at the date of Provisional Acceptance. During this guarantee period the Contractor shall have the obligation to substitute or repair any defective equipment that shows up not to be in conformity with the specifications except for tear and wear and usual obsolescence and use of the equipment. The Final Acceptance of the equipment shall be declared after the Contractor has fulfilled its obligations during the warranty period. GRANTECAN shall have the right to request to the Contractor the recoating of the optical surface of the Collimator and Camera Mirrors during the warranty period at a fix price defined in the contract.