5.6 Acceleration and Recovery Scheduling per RP 54R-07

AACE Planning and Scheduling Professional PSP

Track your progress as you read

Finished sections get a check mark.

1 Chapter 0: Introduction & AACE PSP Exam Structure

0.1 Current AACE PSP Exam, Eligibility, and Certification Facts 0.2 Planning and Scheduling Professional Roles and Competencies 0.3 Cost Engineering and Scheduling Terminology per RP 10S-90

2 Chapter 1: Scope Definition & Planning Fundamentals

1.1 Work Breakdown Structure (WBS) Architecture & RP 33R-15 1.2 Organization & Resource Breakdown Structures (OBS, RBS, RAM) 1.3 Project Planning and Activity-Logic Development 1.4 Contract Requirements and Delivery Constraints 1.5 Stakeholder Identification, Needs, and Plan Review 1.6 Constructability Methods and Value Engineering 1.7 Resource Identification and Project Variables 1.8 Scope, Goals, Project Plan, and Phase Definition 1.9 Cost Breakdown Structure and Cost Estimate Development 1.10 Phase Relationships, Baseline Plan, Forecasts, and Risk/Recovery Planning

3 Chapter 2: Critical Path Method Mechanics & Network Logic

2.1 Activity Definition and Logic Relationships 2.2 Activity Durations, Productivity, and Work Calendars 2.3 Forward and Backward Pass Mathematical Mechanics 2.4 Float Calculations and Critical-Path Identification

4 Chapter 3: Advanced Network Techniques & Schedule Constraints

3.1 Schedule Constraints and Their Impact on Dates and Float 3.2 Advanced Logic Modeling: Ladders and Fragnets 3.3 Schedule Levels of Detail and Schedule Basis Documentation 3.4 Schedule Scope and Schedule Specification 3.5 Breakdown-Structure Relationships and the Cost Estimate Model 3.6 Stakeholder Feedback and Types of Schedules 3.7 Activities, Milestones, Schedule Quality, and Basis Documentation

5 Chapter 4: Resource Management & Leveling

4.1 Resource Planning, Allocation, and Histograms 4.2 Resource Leveling vs. Resource Smoothing 4.3 Cumulative Resource S-Curves & Productivity Tracking

6 Chapter 5: Baseline Management & Schedule Updating

5.1 Baseline Establishment, Forecasts, and Controlled Revision 5.2 Progress Measurement and Data Date Mechanics 5.3 Out-of-Sequence Logic: Progress Override vs. Retained Logic 5.4 Schedule Update Review and Quality Verification per RP 53R-06 5.5 Cost/Resource Management, Schedule Change, and Feedback 5.6 Acceleration and Recovery Scheduling per RP 54R-07 5.7 Control Schedules, Variance Analysis, Forecasts, and Management Summaries

7 Chapter 6: Schedule Risk Analysis & Monte Carlo Simulation

6.1 Schedule Risk Principles, Risk Drivers, and Three-Point Estimates 6.2 Monte Carlo Simulation, Criticality, Correlation, and Merge Effects 6.3 Risk Outputs, Confidence Dates, Sensitivity, and Contingency

8 Chapter 7: Earned Value & Earned Schedule Management

7.1 Earned Value Foundations: PV, EV, AC, and Variances 7.2 Traditional EV Performance Indices & Late-Project Quirks 7.3 Earned Schedule (ES) Theory, SV(t), and SPI(t) 7.4 Independent Schedule Forecasting & IEAC(t)

9 Chapter 8: Forensic Schedule Analysis & Delay Claims

8.1 Delay Classification, Criticality, and Contract Questions 8.2 RP 29R-03 Taxonomy, Data Validation, and Method Selection 8.3 TIA, Windowed Analysis, and Subtractive Models 8.4 Concurrency, Pacing, and Float: Technical Analysis Before Entitlement

10 Chapter 9: Executive Communication & Practical Scenario Applications

9.1 Official PSP Memo Writing Framework 9.2 Structured Technical Problem-Solving for PSP Scenarios 9.3 Current Exam Strategy and Core Calculation Review

5.6 Acceleration and Recovery Scheduling per RP 54R-07

Key Takeaways Explain This Topic AI

RP 54R-07 addresses recovery scheduling; it is not an earned-value Recommended Practice.

Acceleration changes planned execution to achieve an earlier result and can involve crashing, fast-tracking, resequencing, shifts, or changed methods.

A recovery schedule must begin from validated current status and show feasible resources, logic, cost, risk, safety, and quality effects.

The cause of delay and responsibility for recovery cost are separate from the technical task of developing a credible recovery plan.

Last updated: October 2026

5.6 Acceleration and Recovery Scheduling per RP 54R-07

AACE RP 54R-07 is titled Recovery Scheduling—As Applied in Engineering, Procurement, and Construction . It provides guidance for creating or reviewing a recovery schedule when current status and progress forecast late completion. It is not an earned-value standard.

Acceleration versus recovery

Acceleration is an execution change intended to achieve an earlier completion than the otherwise forecast plan. Recovery is acceleration or corrective planning aimed at regaining a required or target date after variance. A project can also accelerate an already on-time schedule for business reasons.

Techniques include:

adding qualified crews, equipment, or shifts;
overtime or alternate calendars;
resequencing preferential logic;
fast-tracking work that can safely overlap;
crashing selected critical activities;
changing means, methods, fabrication, or logistics;
expediting design decisions or procurement; and

phased turnover or changed acceptance sequence.

Start from valid status

A recovery model built on incorrect actual dates or obsolete logic is not credible. Confirm the data date, actual progress, remaining scope, constraints, current longest paths, resource availability, and approved changes.

Do not simply set the required finish as a mandatory constraint and call the negative float a plan. The recovery activities and commitments must explain how time will be regained.

Develop alternatives

For each option quantify:

Dimension Review
Time Days recovered and affected milestones
Resources Crew, skill, equipment, supervision, workfront
Cost Premium time, mobilization, expediting, indirects
Logic Overlap, interfaces, new critical or near-critical paths
Safety/quality Congestion, fatigue, inspection, rework risk
Risk Probability of achieving the recovery assumption
Governance Approval, contract change, and accountable owner

Recovery is rarely linear. More overtime can reduce hourly productivity; adding crews can create congestion; fast-tracking can increase rework from incomplete design.

Review the recovery schedule

Check that:

status agrees with the accepted current update;
all logic, duration, calendar, and resource changes are identified;
added resources are actually available;
production rates are supported;
the plan protects safety and quality;
critical and near-critical paths are analyzed;
required approvals and procurement are included; and

progress measures can track the recovery commitments.

Contract boundary

RP 54R-07 notes that responsibility for increased recovery cost is beyond its technical scope. The project may need to resolve excusable delay, directed acceleration, constructive acceleration, or contractor responsibility under its contract and applicable law. The scheduler should state the modeled requirement and assumptions without making unsupported legal conclusions.

Example

A forecast is twenty working days late. Option A adds a night shift to recover twelve days but requires scarce supervision. Option B resequences two workfronts to recover eight days with moderate interface risk. The combined option does not automatically recover twenty days because the paths may merge and share resources. Model each alternative in the current network, then validate resource and risk interaction.

Control after approval

Once selected, establish activity-level commitments, responsibility, short-interval measures, and review cadence. Compare actual recovery performance with both the current forecast and recovery target. Do not overwrite the original baseline; preserve the history of variance and authorized changes.

A recovery schedule is credible only when it is an executable management plan, not a cosmetically earlier finish date.

Applied review: prove that recovery can be executed

Acceleration seeks earlier performance than the otherwise planned or forecast result; recovery seeks to regain a target after slippage or emerging risk. Either may use resequencing, parallel work, added crews, shifts, alternate methods, prefabrication, work-face changes, expedited procurement, or scope decisions. Each option has prerequisites and side effects. More people can reduce productivity in congested areas, and overtime can introduce fatigue or declining output.

A recovery schedule begins with accurate current status and identification of the paths controlling the target milestones. Model the proposed intervention, confirm resource and material availability, calculate the effect, and identify new or transferred risks. Include approval dates, mobilization, learning, access, supervision, safety, quality, and commissioning impacts. Compare alternatives on time gained, incremental cost, confidence, and operational consequence.

AACE RP 54R-07 concerns recovery scheduling; it should not be cited as an earned-value standard. Its subject reinforces the need for a documented, traceable plan rather than a cosmetic compression of remaining durations. Monitor recovery with leading measures such as crew mobilization, design release, procurement commitment, and production rate, then update the forecast when evidence differs from the assumption. On the exam, reject “recovery” that overwrites the baseline, ignores current status, or imposes impossible dates without means and resources.