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Proceedings Paper

Transitioning from conceptual design to construction performance specification
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Paper Abstract

On successful completion of a conceptual design review by a funding agency or customer, there is a transition phase before construction contracts can be placed. The nature of this transition phase depends on the Project's approach to construction and the particular subsystem being considered. There are generically two approaches; project retention of design authority and issuance of build to print contracts, or issuance of subsystem performance specifications with controlled interfaces. This paper relates to the latter where a proof of concept (conceptual or reference design) is translated into performance based sub-system specifications for competitive tender. This translation is not a straightforward process and there are a number of different issues to consider in the process. This paper deals with primarily the Telescope mount and Enclosure subsystems. The main subjects considered in this paper are: • Typical status of design at Conceptual Design Review compared with the desired status of Specifications and Interface Control Documents at Request for Quotation. • Options for capture and tracking of system requirements flow down from science / operating requirements and sub-system requirements, and functional requirements derived from reference design. • Requirements that may come specifically from the contracting approach. • Methods for effective use of reference design work without compromising a performance based specification. • Management of project team's expectation relating to design. • Effects on cost estimates from reference design to actual. This paper is based on experience and lessons learned through this process on both the VISTA and the ATST projects.

Paper Details

Date Published: 25 September 2012
PDF: 13 pages
Proc. SPIE 8449, Modeling, Systems Engineering, and Project Management for Astronomy V, 84490B (25 September 2012); doi: 10.1117/12.924501
Show Author Affiliations
Paul Jeffers, National Solar Observatory (United States)
Mark Warner, National Solar Observatory (United States)
Simon Craig, National Solar Observatory (United States)
Robert Hubbard, National Solar Observatory (United States)
Heather Marshall, National Solar Observatory (United States)

Published in SPIE Proceedings Vol. 8449:
Modeling, Systems Engineering, and Project Management for Astronomy V
George Z. Angeli; Philippe Dierickx, Editor(s)

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