Schedule Development

Integrated Master Schedule (IMS)

Example Project 3The Integrated Master Schedule (IMS) is a time-based schedule containing the networked, detailed tasks necessary to ensure successful program/contract execution. The IMS is traceable to the Integrated Master Plan (IMP), Work Breakdown Structure (WBS), Statement of Work (SOW), Contractor Performance Report (CPR) and Earn Value Management system (EVMS).

The IMS is used to verify attainability contract objectives, evaluate progress toward meeting program objectives, and integrate the program schedule activities with all related components. The Program Manager (PM) develops an IMS on all cost or incentive contracts, subcontracts, Government Interagency Acquisition work agreements, and other agreements valued at or greater than $20 million. [1]

The IMS utilizes Critical Path network management techniques to optimize the relationship of critical activities. It uses the same (3) three; Events, Accomplishments, and Criteria to show network relationships; as IMP.

Definition: The Integrated Master Schedule (IMS) is a time-based schedule containing the networked, detailed tasks necessary to ensure successful program/contract execution.

Guide: DoD Integrated Master Plan & Integrated Master Schedule Preparation & User Guide

The 4 Steps to Developing an Integrated Master Schedule (IMS): [1]

IMS Contract Data Requirements List (CDRL)

Data Item Description DI-MGMT-81661 “Integrated Program Management Report (IPMR)” is used to obtain the IMS. The contracting officer and contractor should negotiate reporting provisions in the contract, including the level of detail, submission dates, and frequency of the schedule risk analysis. The IMS is not normally considered a contractual document. [1]

How the Integrated Master Plan (IMP) relates to the Integrated Master Schedule (IMS)

The Integrated Master Plan (IMP) and Integrated Master Schedule (IMS) are linked together and show that a program is adequately planned and has the potential to achieve its goals and objectives within a program’s schedule and cost constraints. The IMP and IMS are valuable tools a PM can use in preparing for a Request for Proposal (RFP) and Source Selection.  It can serve as the basis of an offeror’s proposal and evaluation criteria.

The IMP and IMS are Program Management tools for program personnel and stakeholders to provide oversight of acquisition programs. They provide a systematic approach to program planning, scheduling, and execution.

IMP and IMS Relationship

Integrated Master Plan (IMP)

The Integrated Master Plan (IMP) is an event-based, top-level plan consisting of a hierarchy of Program Events.  Each event is decomposed into specific accomplishments and each specific accomplishment is decomposed into specific Criteria.  The IMP is ultimately used to develop a time-based Integrated Master Schedule (IMS) to shows a networked, multi-layered schedule showing all the detailed tasks required to accomplish the work effort contained in the IMP. The IMP and IMS are related to the Work Breakdown Structure (WBS). The IMP provides a Program Manager (PM) with a systematic approach to planning, scheduling, and execution.

AcqLinks and References:

Updated: 8/3/2021

Rank: G1

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