(updated February 26, 2024)
Technical and programmatic review of the issues and progress over the last two months provided resolution on the path forward for both the end of telescope/M1M3 (Primary-Tertiary Mirror) testing and Camera integration work at SLAC. While the results from both of these areas were excellent this month, the final forecast of schedule impact did extend out another two weeks from last month’s estimates.
Project earned value toward the MREFC effort increased by $1.7 million this month to a calculated $506.1 million. The cost variance changed by -$2.4 million this month to -$0.9 million, and the cost performance index held at 1.0. The schedule variance changed by -$1.1 million to -$7.0 million, which equates to a schedule performance index of 0.99. No project controls change requests (LCR) was implemented this month. As of the end of the month, the project has allocated 90% of the total contingency to the baseline through the change control process. The remaining contingency of $9.2 million is 17% of (TPCII -BAC -CV)/(EACII -ACWP ).
(ETC = Estimate to completion, BAC = Budget at completion, BCWP = Budgeted cost of work performed).
A more detailed list can be found here [1].
Updated with post Covid replan dates pending agency approval
The table shows forecast dates, i.e., the Project’s current best estimate. There is, in addition, schedule contingency that is not included in those dates, amounting to about 6 weeks at present. It is likely that the Project will use most or all of that schedule contingency.
The schedule for science data is best estimated relative to the System First Light Milestone. The Operations Team, in consultation with the Rubin Construction Project, currently anticipate the following:
Links
[1] https://dmtn-232.lsst.io/
[2] http://ls.st/rtn-011