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1. Joint Cost and Schedule Confidence Level
(JCL)
A Status Report
February 2010
Used with permission
2. Topics
• JCL policy review
• Why new confidence policy
• Implementation details and SMC and
PMC decisions
• Status of program and project JCLs
• Quality standards
• Project feedback to date
• Observations and lessons learned
• Next steps 2
3. Recap of NPD 1000.5
• Programs to be baselined at a 70% joint confidence level (a 70 percent
probability the program’s projects will be completed at or below the
estimated cost & at or before the projected schedule).
• Projects to be baselined/budgeted at JCL that supports the program
approved JCL
• Projects to be funded at no less than a 50% JCL or as approved by the
decision authority
• JCLs to be developed and maintained through lifecycle beginning at
KDP-I or KDP-C
• Programs in extended operations generally not required to develop
JCL, but new or upgraded capabilities within ops will develop JCL
• Program and project proposed cost and schedule baselines will be
assessed by an independent review team
• External commitments will be based on JCL approved by the
responsible Agency management council
• Programs and projects are annually reviewed by MD or MSO to confirm
that current baselines and JCL are consistent with their annual budget
submit. Significant changes to funding are to be reviewed and 3
approved by the responsible Agency management council
4. Review of Policy Purpose
• Provide stronger assurance to stakeholders that
NASA could meet cost and schedule targets
– Original confidence policy stated that agency would budget
projects at the 70% confidence level of an independent
estimate
– Original policy was silent about meeting schedule targets;
only cost
• Provide an more transparent mechanism to
communicate the consequences of Congressional or
OMB funding changes, i.e., reductions to funding
change the probability of meeting cost and schedule
commitments
4
5. Implementation Details and SMC and
PMC Decisions
• Implementation plan was to “just do it” now and to continuously
evolve the process and products.
• Office of Chief Engineer chartered a JCL Working Group to
recommend derived requirements, flow down, and
communication strategy
– Included representatives from SMD, ESMD, SOMD, MSFC, GSFC,
JPL, OCFO, OSMA and PA&E
• The 18 May 2009 SMC accepted the Working Group’s
recommendations, but the 17 December PMC provided more
specific direction:
– The Program Manager is responsible for the Program JCL
– JCLs must be computed for KDP-C based on probabilistic resource
loaded schedules
– Exceptions must be granted a formal waiver by OCE
– A JCL re-calculation may be required by BPR leadership based on
project performance. PA&E and OCE are to use existing metrics
or new factors for purpose of tracking performance
– Projects that are very late in the development cycle, need not
develop a JCL and PA&E is to develop an alternative method of
calculating the Program JCL
5
6. Implementation Details (Concluded)
• SMC and PMC direction (concluded)
• PA&E to develop guidance on uncertainty factors used in the
JCL computation
• Develop a pilot program to examine the benefits of
performing parametrically-based JCLs at KDP B
• SMAP, MAVEN, and LADEE identified.
• LADEE subsequently re-directed based on imminent KDP C
6
7. Status of Program and Project JCLs
• PA&E providing consulting support to help
programs and projects develop JCLs
– Completed: MMS, LDCM, and SOFIA
– Pilot project: MAVEN
– In-process: JWST, LADEE and MAVEN
• CxP developing own JCL
• JPL developing JCL for its projects
– Completed: MSL and NuStar
– Pilot project: SMAP
• IT Program and projects
– Planned to start in February 2010 7
10. General JCL Quality Standards
• Overarching principles: Transparent, traceable, defendable and timely (T, T, D &
T)
• Cost and schedule base-estimates must
– Have a clear basis for the estimates
– Include all the cost elements and schedule activities
– Be supported by relevant data
• All possible risks, threats, liens, uncertainties, mitigation strategies and
opportunities must be explicitly quantified
– Probability of occurring
– Estimated cost, schedule (or both) consequences
• Address available annual resources
• Incorporate impacts of cost and schedule performance to date
• Risks must be transparently incorporated into cost, schedule and/or both
• JCL product documentation/model must describe
– Basis for base schedule duration and logic
– Basis for base cost estimates
– Risks included and basis for probability and consequences
– Risks excluded and why
– Description of JCL method used
10
11. Project Feedback to Date
• Adds a new requirement without dropping any of other requirements
– Still had to reconcile with other estimates
– Not staffed to do
– Not equipped or trained to do
• Process of creating integrated master schedule, resource loading the
schedule, and assigning probabilities was onerous
• Impact of discrete risks to project cost or schedule was overshadowed
by uncertainty assignments (perceived as arbitrary)
• Assignment of uncertainty and correlation was not well understood or
readily transparent to all
• Models took too long to perform “what-if” analyses because the model
was at too low a level of detail and because of model inefficiencies
• Took 7-12 staff months to develop
• JCL models will be cumbersome to maintain
11
12. Observations and Lessons Learned
• Observations:
– JCL process requires integrated master schedule that is linked with
cost and risk and much time and effort was spent developing an
integrated resource loaded schedule
– Project personnel are unfamiliar with developing resource-loaded
schedules and associated tools
– Projects need more experienced personnel to meet this
requirement
• Lessons learned:
– Develop models at an appropriate level of detail that is useful to
management and at the same time is maintainable
– Explain techniques to reduce Monte Carlo simulation times
– Ensure all risks are quantified and understood by all
• Discrete risks
• Uncertainty from history
– Provide guidance on uncertainty factors
12
13. Next Steps
• Explore the potential for an alternate method to
calculate program JCLs when member projects are
not available
• Provide status report on the value of the parametric-
based JCL pilot projects (MAVEN and LADEE)
• Publish and distribute guidelines on uncertainties and
educate project staffs on their use
• Complete JCL handbook informed by JCL experience
• Periodically update the SMC and PMC on JCL
development progress
13
14. Next Steps (Concluded)
• Assist OCE-led working group to develop alternate
methods of assuring that projects establish credible
technical, cost and schedule estimates at KDP-B, i.e.,
better basis of estimates/evidence of realistic plans
– Analogous project experiences
– Realism about mass and other technical data growth rates
– Realism concerning complexity, heritage, and technology
readiness levels
– More comprehensive discussion of risks and the possible
impact to plans and corresponding reserves
14
17. JCL is a Paradigm Shift
• JCL integrates cost, schedule and risks
• “Reserves” are driven by the quantification of
the risk vice a set “design standards”
• If we want projects to meet cost and schedule
commitments, we must budget and fund them
with a higher probability of success
• Difference between agreed to JCL for
budgeting and amount allocated to projects
determine the Unallocated Future Expenses
(UFE), previously referred to as Management
Reserves. UFE is necessary for a project’s
17
success
18. Unallocated Future Expenses (UFE)
X = Project most likely point estimate
Y = Cost estimate where there is a 65% chance that final actual cost
will be less than cost estimate
Y-X = Total Unallocated Future Expenses (UFE) REQUIRED to meet 65 % CL
Z = Project requirement with project-assigned UFE (Z-X)
100
Probability
(Confidence
Level) • The S curve is the cumulative
65 probability distribution coming out of
the statistical summing process
• 65% confidence that project will cost
Project UFE indicated amount or less
50 • Provides information on potential cost
as a result of identified project risks
• Provides insight into establishing UFE
levels
25
MD or
Program-Held
UFE
Cost Estimate
X Z Y 18
(Dollars)