However there must always be effective configuration

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Unformatted text preview: active approved baseline is communicated in a timely manner to all those relying on it. This communication keeps project teams apprised as to the distinction between what is frozen under formal change control and what can still be decided without configuration control board approval. Configuration control is essential at both the contractor and NASA field center levels. Changes determined to be Class I to the contractor must be referred to the NASA project manager for resolution. This process is described in Figure 19. The use of a preliminary Engineering Change Proposal (ECP) to forewarn of an impending change provides the project manager with sufficient preliminary information to determine whether the contractor should spend NASA contract funds on a formal ECP. This technique is designed to save significant contract dollars. Class 1 changes affect the approved baseline and hence the product version identification. Class 2 changes are editorial changes or internal changes not "visible" to the external interfaces. Class 2 changes are dispositioned by the contractor's CCB and do not require the NASA project manager's approval. Overly formalized systems can become so burdensome that members of the project team may try to circumvent the process. It is essential that the formality of the change process be appropriately tailored to the needs of each project. However, there must always be effective configuration control on every project. For software projects, it is routine to use version control for both pre-release and post-release deliverable systems. It is equally important to maintain version confor hardware-only systems. Approved changes on a development project that has only one deliverable obviously are only applicable to that one deliverable item. However, for projects that have multiple deliverables of "identical" design, changes may become effective on the second or subsequent production articles. In such a situation, the configuration control board must decide the effectivity of the change, and...
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This document was uploaded on 02/26/2014 for the course E 515 at University of Louisiana at Lafayette.

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