JWST PRDS Project Mangement Case Study

Jesse Doggett

Project Engineer, ITEB/OED

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Outline

What is the JWST PRDS?

Stakeholders & Communication

PRDS Formal Documents

Planning and Subprojects

Managing Change

Quality

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JWST PRDS Project Reference Database

Data Used to Operate the Space Craft

PRDS Functional Components Data Editor

Version Control

Dependency Checking

Change Management

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Observatory LaunchSegmentOptical TelescopeElement (OTE)Spacecraft

Science & OperationsCenter (S&OC)LaunchVehiclePayloadAdaptorLaunch SiteServicesIntegrated ScienceInstrument Module(ISIM)

MissionSegmentElementSubsystemProject ReferenceDatabase Subsystem (PRDS)

Version ControlSystem (VCS) Change ManagementSystem (CMS)Data InterchangeSystem (DIS) Cross-ReferencingSystem (XREF)Component

JWSTMissionGroundSegment

Proposal PlanningSubsystem (PPS)Flight OperationsSubsystem (FOS)Data ManagementSubsystem (DMS)

InstitutionalSupportCommonSystemsOperations ScriptSubsystem (OSS)

JWS

T W

BS

(Work B

reakdown S

tructure)

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Stakeholders / Communication Stakeholders

NASA, NGST, Instrument Teams, ISIM, WFS&C, OSS, S&OC, PRDS Team

Communication Working Group Meetings

Status, Requirements, Interfaces, Design

Formal Documents

NGIN - JWST Restricted Web Site

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Formal Documents Planning Documents

Architecture, Operations Concept, Requirements, Design

Acceptance Documents Test Plan

Test Results

Release Notes

Other Interface Control Document

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Planning and Subprojects Basic Plan

Project broken up into phases or sub-projects.

Initial phase, implement baseline set of requirements.

Subsequent phases, requirements and bug fix implementations tracked in the Problem Report System

Delivery Procedures Minor Releases (bug fixes)

E-Mail Notification, Delivered via Download

Major Releases (new requirements) Formal Documents, Government Witness for Acceptance,

Contracting Officer Delivers CD and Hard Documents

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Managing Change Requirements

Informally Discussed in Working Group Meeting

Formal Request to Change Is Negotiated

New Requirements Document Approved and Updated

Important to Agree with Government on the Set of Requirements

Personnel Unplanned Departures Between First 2 Phases

Worked with Division to Identify Other Available Personnel

Slipped Schedule a Few Weeks

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Certification Requirements ~20 New Requirements / No New Funding

Initially, Informed NASA We Can’t Set Completion Date

“Rolling Wave Planning” Create and Refine Schedule and Plan

Design-As-We Go

Acceptance Test Only at the End

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Quality Planning Quality Assurance

Ensures that activities are being performed to verify requirements are met.

Not formally done for PRDS

Quality Control Software Testing for PRDS

Perform Regression and Problem Report Testing

Weekly Reports

Results Driver Future Action Document Failures

Determine If Immediate Fixes Required to Release