4M Analysis
A cause-analysis structure that organizes possible factors under People, Machine, Method and Material.
Glossary
Improvement language, explained clearly.
A growing reference for common Continuous Improvement, Lean, quality and manufacturing terms.
5 Whys
A questioning technique used to move from a visible problem toward the causal mechanism behind it.
5S
A workplace organization method commonly summarized as Sort, Set in Order, Shine, Standardize and Sustain.
8D
Eight Disciplines; a team-based corrective-action method covering containment, cause analysis, corrective action and prevention.
8 Wastes
A Lean framework for recognizing non-value-adding work: defects, overproduction, waiting, non-utilized talent, transportation, inventory, motion and extra-processing.
A3
A structured problem-solving and communication approach commonly summarized on one A3-sized page.
Andon
A visual or audible signal used to make an abnormal production condition visible and trigger an appropriate response.
Autonomous Maintenance
A TPM practice in which operators help preserve basic equipment conditions through cleaning, inspection and routine care.
Continuous Improvement
The disciplined practice of repeatedly improving processes, systems and ways of working through learning and verified change.
Control Chart
A time-ordered chart with statistically derived limits used to distinguish common-cause variation from special-cause signals.
Cycle Time
The elapsed time required to complete a process cycle or produce one unit at a defined process step.
Daily Management
A management system for making expected performance, actual performance, abnormalities, ownership and follow-up visible each day.
DMAIC
Define, Measure, Analyze, Improve and Control; a structured Six Sigma improvement method.
Early Equipment Management
A TPM approach that applies operating and maintenance learning to the design, selection, installation and startup of new equipment.
Fishbone Diagram
A cause-and-effect diagram used to organize possible causes of a defined problem into logical branches.
FMEA
Failure Modes and Effects Analysis; a structured method for identifying potential failures, effects, causes and risk-reduction actions.
Focused Improvement
A TPM pillar that uses cross-functional problem solving to remove chronic equipment and process losses.
Gemba
The actual place where work or value creation occurs.
Heijunka
Production leveling used to smooth volume and mix over time and reduce unevenness and overburden.
Hoshin Kanri
A strategy-deployment approach that connects long-term priorities with objectives, measures, ownership and learning across the organization.
Kaizen
Ongoing improvement through learning and practical changes to the way work is performed.
Kanban
A visual signaling method used to authorize replenishment or movement in a pull system.
KPI
Key Performance Indicator; a measure selected to show whether an important process, objective or result is performing as intended.
Leader Standard Work
A defined set of recurring leadership routines that supports process discipline, problem visibility and follow-up.
Line Balancing
The allocation of work across process steps or stations to improve flow and better match the required production pace.
MTBF
Mean Time Between Failures; a reliability measure representing average operating time between repairable equipment failures.
MTTR
Mean Time To Repair or Mean Time To Restore; a maintainability measure describing the average time required to return failed equipment to service.
OEE
Overall Equipment Effectiveness; a measure combining Availability, Performance and Quality.
One-Piece Flow
A flow condition in which work moves through process steps one unit at a time rather than in large batches.
Operational Excellence
A management approach that aligns strategy, processes, people and improvement systems to deliver consistently strong performance.
Pareto Analysis
A prioritization method that ranks categories by frequency or impact so attention can focus on the most significant contributors.
PDCA
Plan, Do, Check and Act; a repeated learning cycle for testing and improving changes.
Planned Maintenance
A TPM practice that uses scheduled maintenance activities to preserve equipment condition and reduce avoidable failures.
Poka-Yoke
Mistake-proofing; a design approach that prevents errors or makes them immediately detectable at the source.
Quality Maintenance
A TPM pillar focused on controlling equipment and process conditions that can create product-quality defects.
Root Cause Analysis
A structured investigation used to identify causal mechanisms deeply enough to select actions that reduce recurrence.
SMED
Single-Minute Exchange of Die; a systematic approach to reducing setup and changeover time.
SQDC
Safety, Quality, Delivery and Cost; a balanced daily-management framework often expanded to SQDCP by adding People.
Standard Work
The current best-known defined method for performing work safely, consistently and efficiently.
Takt Time
The production pace required to meet customer demand.
TPM
Total Productive Maintenance; a company-wide approach to equipment effectiveness, basic conditions and reliability.
Toyota Problem Solving
A disciplined problem-solving approach that emphasizes grasping the situation, identifying causes, implementing countermeasures and following results.
Value Stream Mapping
A visual method for studying the flow of material and information needed to deliver a product or service.
Visual Management
The use of visual signals and standards to make expected conditions, actual conditions and abnormalities easy to recognize.
Bottleneck
The process step or resource that currently limits the throughput of the overall system.
Capacity Planning
The comparison of realistic process capacity with expected demand to identify gaps, risk and improvement needs.
Measurement System Analysis
A set of methods used to determine whether measurement variation is acceptable for the decisions made from the data.
Process Capability
The relationship between stable process variation and specification limits, commonly summarized with indices such as Cp and Cpk.
Respect for People
An operating principle that develops capability, involves employees, makes problems safe to surface and designs systems that help people succeed.
Skills Matrix
A visual representation of who is qualified or developing for specific tasks, used to expose capability gaps and training risk.
Training Within Industry
A structured supervisor-development system built around practical methods such as Job Instruction, Job Methods and Job Relations.
Operational Excellence Management System
An integrated operating system that connects strategy, daily management, problem solving, capability development and improvement.
Jidoka
A Lean principle in which abnormalities are detected, defective work is stopped or contained, the condition is made visible, and recurrence is addressed.
Just-in-Time
A production principle that aligns flow and replenishment with actual need so the right item is available in the right quantity at the right time.
Pull System
A control method in which downstream consumption authorizes upstream replenishment within defined work-in-process or inventory limits.
Muda
Waste; activity that consumes resources without creating required customer value.
Mura
Unevenness or inconsistency in workload, demand, flow or operating conditions that creates instability.
Muri
Overburden; unreasonable strain placed on people, equipment or systems beyond a safe, reliable or sustainable level.
SIPOC
Suppliers, Inputs, Process, Outputs and Customers; a high-level process view used to clarify scope and major relationships before detailed analysis.
Critical to Quality
A measurable characteristic that is essential to meeting an important customer need or requirement.
Cost of Poor Quality
The financial loss associated with quality failures and nonconformance, including effects such as scrap, rework, returns, warranty and disruption.
Reliability-Centered Maintenance
A structured method for selecting maintenance strategies based on required functions, failure modes, consequences and technical evidence.
Voice of the Customer
A structured method for understanding customer needs, expectations, and experiences and translating them into requirements for process or product design.
Process Mapping
A visual representation of activities, decisions, handoffs, and flow used to understand how work is actually performed.
Theory of Constraints
A management approach that focuses improvement on the factor currently limiting the performance of the overall system.
First Pass Yield
The proportion of units that complete a process correctly the first time without rework, repair, retest, or repetition.
Predictive Maintenance
A maintenance approach that uses condition evidence and failure behavior to determine when intervention is needed before functional failure.
Breakdown Analysis
A structured investigation of equipment failure used to identify physical, task, and system causes and prevent recurrence.
Change Management
The disciplined work of helping people understand, adopt, and sustain a new way of working.
5W1H
A problem-definition structure using What, Where, When, Who, Which, and How to describe an abnormal condition before causal analysis.
Control Plan
A structured document that defines what process and product characteristics are controlled, how they are monitored, and what reaction is required when results are abnormal.
Layered Process Audit
A short, focused process audit performed by multiple leadership levels to verify that critical controls are being followed.
Yamazumi Chart
A stacked work-content chart used to compare operator or station workload against takt time and expose imbalance.
Spaghetti Diagram
A visual trace of actual movement through a workplace used to reveal excess travel, transport, and poor layout.
ECRS
An improvement method that challenges work by asking what can be Eliminated, Combined, Rearranged, and Simplified.
Little's Law
A stable-system relationship connecting work-in-process, throughput, and lead time.
Tiered Daily Meetings
A short daily-management cadence that connects frontline performance, escalation, support, and leadership response across organizational levels.
Catchball
A two-way dialogue process in Hoshin Kanri used to align objectives, measures, ownership, resources, and feasibility before execution.
CAPA
A structured Corrective and Preventive Action process used to contain problems, verify causes, implement corrective actions, and reduce recurrence.
Pp and Ppk
Process performance indices that compare overall observed process variation and centering with specification limits.
Obeya
A shared visual management environment used to coordinate strategy, performance, problems, decisions, and cross-functional action.
Nemawashi
The practice of building understanding and alignment through early discussion before a formal decision or major change.
Hansei
A disciplined reflection practice used to identify lessons and improvement opportunities after work or results are reviewed.
Kamishibai
A visual scheduling and status method used to make recurring process checks and management routines visible.
Standard Work Combination Table
A work-design tool that visualizes manual work, machine time, walking, sequence, and takt time within an operator cycle.
PFEP
Plan for Every Part, a controlled material-data system defining information such as usage, container quantity, storage, replenishment, and ownership.
Kaizen Event
A focused short-duration improvement activity in which a cross-functional team studies a defined process problem, tests changes, and establishes a better standard.
Toyota Kata
A structured approach for developing scientific improvement thinking through repeated Improvement Kata and Coaching Kata routines.
X-Matrix
A Hoshin Kanri strategy-deployment tool that visually connects long-term direction, annual priorities, measures, initiatives, and ownership.
Is / Is Not Analysis
A problem-definition technique that compares affected and unaffected conditions to identify meaningful distinctions and narrow causal investigation.
Hour-by-Hour Board
A visual daily-management tool that compares expected and actual production in short intervals so gaps can be addressed quickly.
Milk Run
A standardized material-delivery route that replenishes multiple locations at a defined sequence and frequency.
Asset Criticality
A risk-based ranking of equipment according to the consequence of failure and its importance to the operating system.
Supermarket Pull System
A controlled inventory location that supports pull replenishment when downstream consumption triggers replacement of material.
Gage R&R
A Measurement System Analysis study that separates repeatability, reproducibility, and part-to-part variation to evaluate whether a measurement system is fit for purpose.
Design of Experiments
A structured statistical method that changes multiple factors deliberately to estimate effects, interactions, and improved process settings.
Fault Tree Analysis
A deductive analysis that works backward from an undesired top event using logical AND and OR relationships to map possible failure pathways.
Short Interval Control
A daily-management practice that reviews performance in frequent intervals so teams can respond to abnormalities before the operating period is lost.
Maintenance Planning and Scheduling
The coordinated preparation and timing of maintenance work so jobs are ready, resources are available, and execution is more predictable.
Work Sampling
A work-measurement method that uses many distributed observations to estimate the proportion of time spent in defined activity categories.
Psychological Safety
A team condition in which people can raise concerns, admit uncertainty, ask questions, and offer ideas without unreasonable fear of punishment or embarrassment.
TWI Job Instruction
A Training Within Industry method for teaching work through preparation, structured demonstration, learner practice, and follow-up.
Process Ownership
End-to-end accountability for the performance, measures, standards, risks, and improvement of a process that may cross functional boundaries.
Hoshin Review Cadence
A recurring strategy-deployment review that compares expected and actual results, evaluates countermeasures, and adjusts execution through PDCA.
Centerlining
A method for defining and controlling critical process or equipment settings so proven operating conditions are visible and recoverable.
PM Optimization
The structured improvement of preventive maintenance tasks, intervals, and methods so work is technically aligned with failure modes and risk.
Quality at the Source
An approach that prevents and detects defects where work is performed rather than relying mainly on downstream inspection.
FIFO Lane
A controlled first-in, first-out queue that preserves sequence and limits work-in-process between connected operations.
Process Confirmation
A focused leadership routine used at the Gemba to verify that critical process conditions and standards are present and working.
Countermeasure Management
The discipline of connecting verified causes to specific actions, owners, due dates, follow-up, and evidence of effectiveness.
Process Governance
The structure of ownership, decision rights, measures, review routines, and escalation used to manage an end-to-end process across functions.
Improvement Portfolio Management
The discipline of selecting, sequencing, and reviewing multiple improvement initiatives based on strategy, value, risk, dependencies, and available capacity.
Flow Efficiency
The proportion of total lead time spent on value-adding work, used to expose waiting, queues, and delays inside a process.
Production Preparation Process (3P)
A Lean approach for exploring alternative process, layout, and equipment concepts before major production decisions are locked in.
Failure-Finding Task
A scheduled functional check used to discover hidden failures in protective or standby functions that may not be evident during normal operation.
First Article Inspection
A structured verification that an initial production output conforms to defined requirements before normal production is released.
Stakeholder Analysis
A structured assessment of who is affected by a change, their influence and concerns, and the engagement needed for successful implementation.
Containment Action
A temporary control used to protect the customer, process, or organization while root cause investigation and permanent corrective action continue.
Abnormality Management
A daily management discipline that defines normal conditions, makes deviations visible, establishes response and escalation, and restores the process to standard.
Employee Suggestion System
A structured process for capturing, evaluating, testing, implementing, and recognizing improvement ideas from employees.
Yokoten
The horizontal sharing of proven improvement learning across teams or locations, with local evaluation and adaptation rather than blind copying.
Kaizen Event Facilitation
The structured guidance of a focused improvement event so the team can observe, analyze, test, decide, and follow through effectively.
TWI Job Methods
A Training Within Industry method for questioning job details, eliminating unnecessary work, and developing a better way to perform the job.
TWI Job Relations
A Training Within Industry method that helps supervisors gather facts, weigh actions, make people-related decisions, and follow up constructively.
Pacemaker Process
The point in a Lean value stream where production is scheduled to set the operating rhythm for downstream demand and upstream replenishment.
Work Measurement
The structured determination of the time required for a defined method under specified conditions, used for capacity, balance, planning, and improvement.
After Action Review
A structured review comparing expected and actual results to identify lessons, actions, and changes that should influence future work.
Improvement Project Charter
A concise agreement defining an improvement problem, goal, scope, measures, ownership, constraints, and reason for the work.
Escalation Management
A structured method for moving unresolved operating problems to the level with the authority, expertise, or resources needed to help.
Process Maturity Assessment
An evidence-based evaluation of how consistently a process is owned, standardized, measured, governed, problem-solved, and improved.
Maintenance Backlog Management
The discipline of prioritizing, preparing, aging, scheduling, and reviewing identified maintenance work that has not yet been completed.
Run at Rate
A structured production trial used to verify whether a process can sustain required output, quality, staffing, and operating conditions.
7 Basic Quality Tools
A practical set of data and problem-solving methods including check sheets, histograms, Pareto charts, fishbone diagrams, scatter plots, control charts, and stratification.
Decision Matrix
A structured comparison of alternatives against explicit criteria and weights to make tradeoffs and decision logic visible.
Process Architecture
A structured hierarchy showing how major end-to-end, enabling, and management processes relate across an organization.
Business Process Management
The ongoing discipline of designing, operating, measuring, governing, and improving important business processes as organizational assets.
Operating Review System
A connected set of daily, weekly, and monthly performance reviews designed to place problems and decisions at the appropriate management level.
Standardization After Improvement
The discipline of converting a verified better method into the new normal through updated standards, training, controls, ownership, and follow-up.
Kaizen Newspaper
A visual follow-up method for tracking unfinished improvement actions with clear owners, due dates, status, barriers, and verification.
Daily Accountability Process
A daily management routine that connects visible target gaps with ownership, response, escalation, action follow-up, and recovery to standard.
Barrier Analysis
A problem-solving method that examines missing, weak, failed, or bypassed controls to understand why an unwanted event was able to occur.
Force Field Analysis
A structured assessment of forces supporting or restraining a proposed change so implementation can strengthen support and reduce barriers.
Lessons Learned System
A structured process for capturing, verifying, classifying, owning, and reusing experience so future work benefits from prior learning.
Shift Handover Management
A structured transfer of critical operating information, abnormalities, temporary controls, priorities, and open actions between shifts or teams.
Change Readiness Assessment
An evaluation of sponsorship, stakeholder support, capability, workload, systems, and barriers before a significant change is implemented.
Management of Change (MOC)
A formal process for evaluating and controlling technical and operational risk before changes are implemented and released into normal operation.
Event and Causal Factor Charting
A time-based investigation method that reconstructs events, conditions, and causal factors to support disciplined root cause analysis.
Weibull Analysis
A reliability method that uses time-to-failure data to estimate failure behavior, life characteristics, and maintenance or design implications.
Standard Time
An approved planning time for a defined work method under specified conditions, derived through a controlled work-measurement approach.
Quality Escape Management
The disciplined response to a nonconformance that reached the customer, including protection, scope definition, investigation, corrective action, and effectiveness verification.
Benefits Realization
The discipline of verifying that completed improvement work produced the expected operational, financial, customer, capacity, or risk outcome.
Daily Direction Setting
A daily management routine that translates demand, staffing, constraints, and risk into clear priorities for the current day or shift.
RACI Matrix
A role-clarification tool identifying who is Responsible, Accountable, Consulted, and Informed for specific activities or decisions.
Process Performance Management
The discipline of defining, reviewing, and improving measures that describe end-to-end process outcomes and operating health.
Current Reality Tree
A Theory of Constraints thinking tool that links undesirable effects through cause-and-effect logic to identify deeper common causes.
Production Readiness Review
A structured pre-release review confirming that people, equipment, materials, quality controls, documentation, capacity, and support are ready.
Shutdown and Turnaround Planning
The structured preparation and control of scope, labor, materials, sequencing, risk, execution, and startup for major maintenance outages.
Supplier Quality Management
The discipline of defining requirements, qualifying suppliers, monitoring performance, controlling changes, and improving supplier capability.
SDCA
A stabilization cycle using Standardize, Do, Check, and Act to hold a proven method, detect abnormality, and maintain a stable baseline before further improvement.
Standard Work Audit
A structured comparison of actual work with the documented sequence, timing, WIP, and required operating conditions.
A3 Coaching
A coaching approach that develops problem-solving capability by questioning evidence, logic, experimentation, and reflection while the learner owns the A3.
Genchi Genbutsu
A Lean principle of going to the actual place and examining the actual process and facts before forming conclusions or making important decisions.
MRO Spare Parts Management
The discipline of balancing equipment criticality, lead time, usage, repairability, obsolescence, and inventory when deciding which maintenance spares to stock.
Drum-Buffer-Rope
A Theory of Constraints scheduling method that uses the constraint as the drum, protects it with a buffer, and controls work release with a rope.
Statistical Process Control
The disciplined use of process data, control charts, reaction plans, and process knowledge to understand variation and maintain process stability.
Cause-and-Effect Matrix
A prioritization tool that scores process inputs against weighted critical outputs to focus investigation on the variables most likely to matter.
Improvement Funnel
A structured process for capturing, screening, prioritizing, and selecting improvement opportunities before they move into active execution.
Management by Exception
A management principle that handles normal conditions through standards while directing leadership attention to meaningful abnormalities, risks, and decisions.
Training Needs Analysis
A structured assessment of required competence, current capability, performance gaps, and the development actions needed to close them.
Process Mining
An analytical approach that reconstructs actual process paths from time-stamped event data to reveal variants, delays, rework, and conformance gaps.
Change Point Analysis
A problem-solving method that compares conditions before and after a problem appeared to identify changes that may explain the new abnormal condition.
Lubrication Management
The disciplined control of lubricant selection, storage, contamination, application, intervals, routes, and condition feedback across equipment.
EPEI
Every Part Every Interval; a measure of how frequently a mixed-model process can produce every required part before the sequence repeats.
Acceptance Sampling
A statistical lot-decision method that uses a defined sample size and acceptance criteria instead of inspecting every unit.
Improvement Tollgate Review
A structured project decision point that tests evidence, scope, risk, ownership, and readiness before improvement work advances to the next phase.
Daily Performance Dialogue
A short daily conversation that uses current performance, abnormalities, actions, ownership, and support needs to convert metrics into decisions.
Change Sponsorship
The active leadership role that aligns direction, removes barriers, reinforces new behavior, and sustains leadership commitment during significant change.
Cellular Manufacturing
A Lean layout and operating approach that organizes people and equipment around a product family to support shorter flow, lower WIP, and fewer handoffs.
PM Compliance
The percentage of preventive maintenance tasks completed within the organization’s defined compliance window.
Production Pitch
A practical production-management interval commonly calculated as takt time multiplied by a standard pack or transfer quantity.
Quality Function Deployment
A structured method for translating prioritized customer needs into measurable technical requirements and design priorities.
Operational Definition
A precise rule describing exactly how a measure, event, defect, or condition is identified, counted, classified, and excluded.
Small Test of Change
A deliberately limited experiment used to test one improvement idea, compare actual results with a prediction, and learn before wider implementation.
Problem Statement
A factual description of the measurable gap between the current condition and the required condition, including scope and impact without assumed causes or solutions.
Bad Actor Analysis
A reliability prioritization method that ranks assets or failure modes by recurring downtime, cost, frequency, or other losses to focus deeper investigation.
Reliability Block Diagram
A functional model that represents series, parallel, and redundant component relationships to show how component reliability affects system success.
Decision Rights
Defined authority for who recommends, approves, decides, and escalates specific choices within a process or improvement system.
Risk-Based Thinking
The practice of considering uncertainty, consequence, controls, and opportunity as part of normal operational and improvement decisions.
Production Loss Analysis
A structured analysis of downtime, speed, quality, waiting, changeover, and other losses that reduce available capacity or good output.
Attribute Agreement Analysis
A measurement-system study for categorical judgments that evaluates repeatability, reproducibility, and agreement with a reference classification.
Improvement Backlog
A managed queue of accepted improvement opportunities that are visible and prioritized but not yet active, used to protect focus and limit work in progress.
Shift Start-Up Meeting
A short beginning-of-shift alignment meeting covering safety, staffing, priorities, handover issues, readiness gaps, and immediate support needs.
Competency-Based Qualification
A qualification approach that signs a person off only after demonstrated knowledge and job performance meet defined competence criteria.
Process Control Strategy
An operating logic that combines critical characteristics, preventive controls, measurement, reaction rules, ownership, and escalation to keep a process in control.
Cause Verification
The disciplined testing of whether a suspected cause actually changes the problem, using evidence, comparison, controlled tests, and repeatability.
Maintenance Job Kitting
The preparation and reservation of verified parts, tools, documents, and consumables before scheduled maintenance work begins.
Line-Side Material Presentation
The design of point-of-use material location, container size, orientation, identification, and replenishment to support safe and stable flow.
Nonconforming Output
Product, service, material, or information that does not meet a specified requirement and must be controlled to prevent unintended use or delivery.
Process Validation
The structured demonstration that a process can consistently achieve its intended result under defined operating conditions before full release or routine ownership.
Process Design Review
A cross-functional review that challenges process flow, risk, controls, maintainability, staffing, and interfaces before a new or redesigned process is released.
Problem Stratification
The separation of problem data into meaningful groups such as product, machine, shift, supplier, or time to reveal where the issue is concentrated.
Hypothesis-Driven Problem Solving
A problem-solving approach that states suspected causes as testable explanations, predicts evidence, and uses focused tests to accept, reject, or refine them.
P-F Curve
A reliability concept showing the interval between the point when a developing failure becomes detectable and the point when functional failure occurs.
Schedule Attainment
A production-control measure of how closely actual output by item and time window follows the approved production schedule.
Mizusumashi
A standardized material-support role, often called a Water Spider, that follows a repeatable route to replenish material, remove empties, and handle signals.
Capability Development Plan
A structured plan that converts identified capability gaps into prioritized training, practice, coaching, qualification, and follow-up actions.
Improvement Capacity Planning
The practice of matching active improvement demand with realistic people, specialist, sponsor, and operating capacity so the organization does not start more work than it can finish.
Daily Management Reaction Plan
A defined response linking an abnormal operating trigger with immediate action, ownership, escalation thresholds, and follow-up.
Change Champion Network
A group of credible local influencers who connect sponsors and project teams with employees by reinforcing change, surfacing barriers, and supporting adoption.
Process Interface Management
The discipline of defining inputs, outputs, acceptance criteria, ownership, and escalation where one process hands work or information to another.
Fault Isolation
A structured troubleshooting method that narrows a broad failure symptom to the responsible subsystem, component, signal, or condition through functional testing.
Model Mix Sequencing
The design of a repeatable production order for different product models so demand, workload, material flow, and changeover conditions remain manageable.
Kanban Sizing
The calculation of authorized pull-system inventory and replenishment signals using demand, replenishment lead time, container quantity, and controlled safety allowance.
Control Limits
Statistically calculated boundaries that describe expected process behavior on a control chart; they are different from specification limits, which define acceptable requirements.
Process Baseline
A documented starting condition describing current process performance, variation, operating conditions, and measurement rules before an improvement is implemented.
Change Impact Assessment
A structured assessment of how a proposed change affects roles, processes, systems, skills, behaviors, and stakeholder groups.
CONWIP
A pull-control method that limits total work in process across a flow using a fixed number of circulating authorization signals.
Precision Maintenance
A reliability discipline that reduces maintenance-induced defects through correct installation, alignment, torque, lubrication, cleanliness, and post-work verification.
Critical Process Parameter
A process input or operating condition with a meaningful effect on an important process output and therefore requiring defined limits and control.
Data Collection Plan
A documented plan defining what data will be collected, why, how, where, when, by whom, and with what sampling and measurement rules.
APQP
Advanced Product Quality Planning, a structured approach for coordinating customer requirements, product and process risk, validation, controls, and launch readiness.
PPAP
Production Part Approval Process, a structured submission of product, process, measurement, capability, and control evidence demonstrating production readiness.
Lead Time
The total elapsed time from a defined request, release, or start point to a defined completion or delivery point, including processing and waiting.
Work in Process (WIP)
Work that has entered a process but has not yet reached the defined completion point, including jobs waiting, being processed, or moving between steps.
Throughput
The rate at which a system produces completed output over time; it should be distinguished from local utilization or activity.
Cycle Time vs Takt Time vs Lead Time
A comparison of actual process cycle speed, customer-required production rhythm, and total elapsed system time.
Rolled Throughput Yield (RTY)
The combined first-pass yield across multiple process steps, representing the probability that work completes the full process without defect or rework.
DPMO
Defects Per Million Opportunities, a normalized defect measure based on defects divided by total defined opportunities, multiplied by one million.
Sigma Level
A summary measure used in Six Sigma to express defect performance using normal-distribution conventions; the conversion assumptions should be stated explicitly.
Yield vs First Pass Yield
The distinction between output that eventually becomes acceptable and output that passes correctly the first time without rework.
Daily Loss Review
A short daily-management routine that converts recent production, quality, maintenance, delivery, and labor losses into prioritized actions, ownership, and escalation.
Problem Decomposition
The structured breakdown of a broad performance gap into smaller, measurable subproblems so investigation can focus on the most important branch.
QRQC
Quick Response Quality Control, a rapid problem-response approach emphasizing immediate containment, facts at the point of work, local ownership, verification, and escalation.
Improvement Sustainment Plan
A plan defining ownership, standards, measures, audits, reaction rules, training, and follow-up needed to keep an implemented improvement from drifting back.
Loss Tree
A quantified hierarchical breakdown of a high-level performance gap into increasingly specific loss categories used to prioritize improvement work.
Business Process Standardization
The definition of consistent cross-functional workflows, roles, handoffs, decision rules, controls, and approved exceptions for recurring business processes.
Knowledge Transfer Plan
A structured approach for moving critical know-how from an expert to others through documentation, supervised practice, coaching, and competence verification.
Maintenance Work Order Quality
The completeness and usefulness of maintenance work-order information for planning, execution, history, reliability analysis, and post-work verification.
Daily Management Escalation Ladder
A defined sequence of escalation levels, triggers, timing, and support expectations used to move unresolved daily operating problems to the level capable of resolving them.
Action Aging Review
A routine that reviews open actions by age, due status, owner, risk, and blockage so overdue commitments and systemic execution barriers remain visible.
Process KPI Hierarchy
A structured link between strategic outcomes, process results, leading indicators, and daily operating measures used to maintain line of sight across management levels.
Problem Priority Matrix
A structured scoring method for ranking competing problems using criteria such as impact, urgency, recurrence, risk, and system importance.
Improvement Effectiveness Review
A post-implementation review that verifies intended results, recurrence, side effects, standardization, and sustainment before an improvement is considered complete.
Gemba Coaching Questions
Questions used by leaders at the point of work to develop problem-solving capability by exploring target condition, current condition, evidence, obstacles, and next steps.
Buffer Management
The active control of time or inventory buffers using visible status and action rules to protect constraints, delivery, and flow from normal variability.
Maintenance Defect Elimination
The systematic identification and removal of equipment conditions such as leaks, looseness, contamination, or misalignment before they develop into failures.
Daily Recovery Plan
A time-bound operating plan used when current performance is behind plan and the team still has time to recover the commitment within the shift or day.
Daily Management Trigger Rules
Defined thresholds, timing, ownership, and reaction requirements that determine when abnormal performance must trigger action or escalation.
Operating Discipline
The consistent execution of defined work methods, controls, and reaction rules supported by usable standards, capability, supervision, and process confirmation.
Improvement Opportunity Assessment
A structured review of problem size, evidence, strategic fit, expected value, scope, risk, dependencies, and effort before improvement capacity is committed.
Cause Hypothesis Log
A record of suspected causes, supporting evidence, planned verification tests, results, and decisions used to separate ideas from verified causes.
Maintenance Schedule Breakers
Recurring conditions such as emergency work, missing parts, poor job readiness, or production conflicts that force deviation from the agreed maintenance schedule.
Queue Time vs Processing Time
The distinction between time work waits before processing and time the process is actively working, used to expose where total lead time is consumed.
Changeover Readiness
The completion of tooling, material, information, role, and approval preparation before the last good part so internal setup time can begin without avoidable delay.
Action Closure Criteria
Defined evidence requirements used to verify that an action is truly complete before it is closed in a daily-management or improvement system.
Shift Recovery Handover
A structured transfer of unresolved performance gaps, active recovery actions, risks, owners, and next triggers between operating shifts.
Standard Work Documentation
Controlled, usable documentation of the best-known work method, including sequence, critical points, checks, visuals, and abnormality response where needed.
Process Exception Management
The controlled identification, approval, tracking, risk management, and closure of work that temporarily cannot follow the normal standardized process.
Problem-Solving Review Cadence
A recurring review rhythm that keeps active investigations moving through evidence, hypotheses, verification, barriers, and next learning steps.
Failure Mode Library
A reusable collection of known equipment failure modes, symptoms, causes, detection methods, consequences, and maintenance responses.
Production Sequence Adherence
A measure of how consistently production follows the intended build order, model sequence, or schedule sequence rather than only meeting total volume.
Change Reinforcement Plan
A plan for sustaining new behaviors after implementation through leader follow-up, process confirmation, coaching, measures, recognition, and barrier removal.
Daily Constraint Review
A daily-management routine focused on protecting the current system constraint by reviewing required output, threats to flow, recovery actions, and support needs.
Improvement Pipeline Review
A recurring review of improvement ideas, active work, blocked projects, completions, priorities, and available execution capacity.
Process Window
The combination of process settings and operating conditions within which acceptable output can be produced reliably.
Process Gate
A defined decision point requiring specified evidence and acceptance criteria before work can move to the next process stage.
Contingency Plan
A predefined response for a critical disruption that identifies activation triggers, roles, alternative methods, communication, escalation, and recovery criteria.
Condition-Based Maintenance
A maintenance strategy in which measured equipment condition is used to trigger work before functional failure rather than relying only on fixed intervals.
Equipment Basic Conditions
The fundamental physical conditions such as cleanliness, lubrication, fastening, alignment, sealing, and protection required for reliable equipment operation.
Problem-Solving Evidence Plan
A plan defining the observations, measurements, comparisons, and tests needed to reduce uncertainty and verify or reject problem-solving hypotheses.
Shift Performance Review
A short end-of-shift review that compares plan versus actual, explains major losses, reviews actions, updates recovery risk, and prepares the next handover.
Improvement Value Hypothesis
A testable statement linking a defined performance gap and expected improvement with the operational or financial value the organization expects to create.
Problem Recurrence Review
A structured review performed when a previously controlled issue returns, examining original scope, cause evidence, countermeasure strength, and sustainment.
Process Exception Review
A recurring review of open and repeated process exceptions used to identify aging temporary controls, recurring causes, misuse, and opportunities to improve the standard process.
Standard Work Change Control
A controlled method for evaluating, testing, approving, documenting, training, and verifying changes to established standard work.
Finite Capacity Scheduling
A scheduling approach that loads work only within the actual available capacity of constrained resources rather than assuming unlimited machine or labor availability.
Coaching Action Follow-Up
A coaching practice that reconnects an agreed next step with later observation, evidence, reflection, and the learner's next experiment.
Change Adoption Review
A structured review of whether a newly introduced process or behavior is actually being used consistently, supported by capability, leadership, and operating results.
Visual Escalation
A visual-management method that makes an abnormal condition, escalation threshold, ownership, and response status immediately visible.
Improvement Work-in-Process Limits
Limits on the number of improvement initiatives allowed to remain active at one time so execution capacity is protected and work finishes faster.
Improvement Project Readiness Review
A pre-start review confirming that an improvement project has sufficient problem clarity, ownership, capacity, data access, stakeholder support, and dependency control to begin productively.
Frontline Problem Solving
A disciplined short-cycle response to abnormalities near the work that combines protection, fact gathering, simple cause testing, local action, and escalation when required.
Containment Exit Criteria
Defined evidence requirements used to decide when temporary protective controls such as sorting, inspection, or shipment hold can safely be removed.
Leader Response to Escalation
The leadership response to an escalated abnormality that clarifies risk, removes barriers, provides decisions or resources, and preserves local ownership where possible.
Process Control Ownership
Explicit accountability for monitoring critical process controls, reacting to abnormal conditions, approving changes, and verifying that controls remain effective.
Point-of-Use Storage
The controlled positioning of frequently used tools, materials, consumables, or information close to the work with defined location, quantity, replenishment, and visual order.
Daily Problem Review
A short daily-management routine that reviews active problems, new evidence, next actions, blockers, containment, and escalation without reopening the full investigation.
Improvement Decision Log
A concise record of important improvement decisions, owners, evidence, alternatives, assumptions, and conditions that may require the decision to be revisited.
Improvement Benefit Verification
The process of confirming whether an implemented improvement produced the expected operational or financial value without double-counting or relying on unsupported assumptions.
Maintenance Deferral Management
The controlled process for postponing planned maintenance using risk assessment, temporary controls, approval, a new due date, and visible follow-up.
Maintenance Rework Analysis
A structured review of maintenance work that must be repeated because diagnosis, planning, execution, parts, or post-maintenance verification failed to restore the required condition.
Flow Interruption Analysis
A method for identifying where, how often, and why work stops, waits, backs up, or detours so teams can improve flow stability.
Workload Leveling
The deliberate distribution of demand across time, people, or resources to reduce peaks, overload, waiting, and instability.
Change Feedback Loop
A structured method for collecting, prioritizing, deciding on, and closing the loop on user feedback after a process or behavior change is launched.
Daily Escalation Review
A short management routine that reviews open escalations, current risk, aging, support ownership, response timing, and closure.
Cross-Functional Problem Solving
A structured problem-solving approach that coordinates process ownership, technical expertise, common evidence, decision rights, and actions across multiple functions.
Countermeasure Verification Plan
A plan defining the measures, observation period, expected results, side-effect checks, and decision rules used to determine whether a countermeasure actually worked.
Process Control Review
A periodic review of critical process controls that checks relevance, trigger quality, ownership, actual use, reaction effectiveness, and changes that may affect control requirements.
Change Saturation Assessment
An assessment of overlapping changes affecting the same people or processes, used to identify adoption overload, timing conflicts, competing behaviors, and leader-capacity constraints.
Improvement Project Stop Criteria
Defined conditions used to decide when an improvement initiative should continue, pause, rescope, or stop because value, evidence, risk, or capacity has changed.
Standard Work Rebalancing
The controlled redistribution of work content across operators or stations while preserving standard sequence, capability, safety, quality, and takt alignment.
Production Schedule Freeze Window
A defined near-term period during which production schedule changes are restricted unless an authorized exception justifies changing product, quantity, sequence, or timing.
Escalation Response Time
The elapsed time between a valid escalation and delivery of the decision, resource, or support needed to remove the operating barrier.
Improvement Benefit Owner
The person accountable for validating, realizing, and sustaining the operational or financial benefit expected from an improvement.
Team Problem-Solving Board
A visual workspace that makes active problems, evidence, containment, next actions, blockers, and ownership visible to the operating team.
Process Ownership Handover
The deliberate transfer of process performance accountability, risks, controls, open actions, decision rights, and improvement priorities to a new owner.
Schedule Stability
A measure of how consistently the near-term production plan remains unchanged after release, used to expose planning turbulence that disrupts execution.
Planned vs Unplanned Maintenance Ratio
A maintenance work-mix measure comparing prepared, planned work with reactive or insufficiently planned work, typically using labor hours, work orders, or cost.
Standard Work Observation
Direct observation of actual work against the defined standard to identify barriers, drift, training needs, and opportunities to improve the method.
Change Reinforcement Review
A structured review of whether leader follow-up, process confirmation, barrier removal, recognition, metrics, and other reinforcement mechanisms are sustaining a change.
Daily Response Effectiveness Review
A daily-management review that checks whether triggers, first response, containment, escalation, and recovery actions actually controlled an abnormal condition.
Daily Action Carryover Review
A short routine that keeps important unfinished actions visible across operating days by reviewing risk, age, ownership, blockers, next commitment, and closure evidence.
Leader Follow-Up Discipline
A leadership practice that makes commitments reliable by defining ownership, timing, evidence, escalation, and closure while preserving team responsibility.
Problem Closure Review
A final structured check of problem condition, cause evidence, countermeasure effectiveness, containment exit, standardization, recurrence risk, and ownership before closure.
Improvement Capacity Allocation
The deliberate assignment of limited improvement time, specialist support, and management attention across competing opportunities using value, risk, readiness, and execution constraints.
Standard Work Abnormality Response
The defined detection, safe first action, containment, escalation, recovery, and restart logic used when normal standard work cannot continue as intended.
Process Governance Review
A periodic review of process ownership, decision rights, escalation paths, management cadence, control authority, and cross-functional interfaces.
Process Control Exception Log
A controlled record of temporary deviations from critical process controls, including reason, risk, owner, approval, compensating action, expiry, and closure evidence.
Leader Barrier Removal Review
A management routine that reviews obstacles outside local team authority and tracks leader ownership, timing, escalation, and evidence that the operating barrier was removed.
Coaching Observation Review
A structured review of real coaching interactions focused on question quality, listening, evidence, learner ownership, next steps, and capability development.
Problem Hypothesis Review
A structured review of suspected causes using supporting evidence, contradictory evidence, testability, risk, and learning value to select the next hypothesis to test.
Root Cause Evidence Standard
A defined expectation for the amount and type of evidence required before a suspected cause is considered sufficiently verified for the problem and risk level.
Problem Escalation Criteria
Defined conditions for moving a problem beyond local problem solving because of risk, complexity, recurrence, authority limits, capability gaps, or cross-functional scope.
Maintenance Ready Backlog
The portion of maintenance backlog that has sufficient scope, labor estimate, parts, tools, permits, access information, and technical preparation to be scheduled and executed.
Production Priority Rules
A consistent set of rules for ranking competing production work using customer commitment, risk, material readiness, constraint impact, schedule stability, and recovery needs.
Measurement System Monitoring
Ongoing checks used to detect measurement drift through reference checks, calibration status, repeatability signals, environmental control, and defined reaction rules.
Improvement Intake Review
A structured front-end review of new improvement requests for problem clarity, value, risk, ownership, readiness, duplication, and the appropriate improvement pathway.
Improvement Resource Commitment Review
A review that confirms named people, specialist support, sponsor time, data access, and operating capacity are genuinely available before improvement work is activated.
Daily Priority Conflict Review
A daily-management routine that resolves competing demands for constrained people, equipment, material, or decisions using shared priority logic and clear authority.
Daily Support Capacity Review
A daily-management routine that compares urgent specialist demand with actually available support capacity so limited maintenance, engineering, quality, or other help is prioritized deliberately.
Standard Work Sequence Verification
Direct verification that the defined order of standard work remains practical, followed, safe, quality-protective, and effective under current operating conditions.
Process Decision Log
A controlled record of significant process decisions, including evidence, authority, assumptions, expected effects, review timing, and the reason the decision was made.
Process Risk Review
A periodic reassessment of process risks, controls, triggers, ownership, assumptions, and priorities as products, equipment, demand, systems, and operating conditions change.
Measurement System Change Control
A controlled method for evaluating whether changes to gages, fixtures, software, methods, operators, environment, or specifications require renewed measurement verification.
Improvement Portfolio Exit Review
A structured review that decides whether active improvement work should close, stop, pause, transfer to process ownership, or remain active, while deliberately releasing capacity.
Daily Decision Follow-Up Review
A daily-management routine that keeps significant operating decisions visible until actions occur, blockers are addressed, expected effects are checked, and closure is deliberate.
Leader Decision Quality Review
A leadership review of important decisions focused on evidence available at the time, assumptions, timing, authority, tradeoffs, communication, and resulting lessons.
Standard Work Training Verification
Direct verification that an employee can perform the current standard method safely, correctly, consistently, and independently after instruction.
Maintenance Work Priority Review
A structured ranking of executable maintenance work using asset criticality, failure consequence, due timing, production opportunity, regulatory need, and schedule impact.
Production Constraint Protection Review
A focused review of starvation, blockage, downtime, performance, quality, staffing, material, and schedule losses around the resource that limits system throughput.
Process Ownership Effectiveness Review
A review of whether process ownership has sufficient authority, measures, cadence, cross-functional coordination, risk ownership, and follow-through to influence end-to-end performance.
Measurement System Revalidation
Renewed evidence that a measurement system remains adequate for its intended use after meaningful change, drift, new tolerance, repair, complaint, or method change.
Improvement Sponsor Effectiveness Review
A structured review of whether an improvement sponsor is providing timely decisions, barrier removal, priority alignment, resource commitment, follow-up, and organizational support without taking over team ownership.
Leader Escalation Quality Review
A leadership review of what happens after escalation, including response speed, authority fit, support quality, ownership, communication, and evidence-based closure.
Standard Work Stability Review
A review of whether the current standard method is stable enough to serve as a baseline, using sequence consistency, timing variation, abnormality frequency, material conditions, equipment reliability, and change discipline.
Maintenance Work Aging Review
A maintenance work-management review that examines backlog age together with risk, readiness, waiting reason, asset criticality, due timing, and explicit disposition.
Production Readiness Exception Review
A focused production-control review of work that is not fully ready because of missing material, tooling, staffing, quality approval, technical information, or equipment conditions.
Process Decision Escalation Review
A governance review of delayed process decisions focused on decision rights, evidence quality, cross-functional conflict, escalation timing, routing, and authority bottlenecks.
Countermeasure Side-Effect Review
A problem-solving review that checks whether a countermeasure created new safety, quality, flow, cost, workload, maintenance, or customer risks while solving the original problem.
Control Plan Reaction Verification
Direct verification that a control-plan reaction correctly detects abnormality, contains risk, escalates to the right authority, documents decisions, and restarts the process only when control is restored.
Daily Exception Ownership Review
A daily-management routine that assigns one owner, next action, due timing, escalation, and evidence-based closure to unresolved abnormal conditions.
Leader Commitment Reliability Review
A leadership review that checks whether important management commitments have clear ownership, timing, evidence, conflict handling, and dependable follow-through.
Standard Work Release Readiness
A readiness check that confirms a new or revised standard has approved documentation, workplace conditions, training, controls, abnormal response, ownership, and post-release verification in place.
Maintenance Planning Quality Review
A maintenance work-management review of job scope, task sequence, labor estimate, parts, tools, permits, access, safety controls, and completion criteria before scheduling.
Production Schedule Change Review
A production-control review that evaluates customer need, readiness, constraint impact, changeover cost, downstream effects, freeze-window status, and decision authority before changing a committed schedule.
Operating Review Decision Effectiveness
A review of whether operating-management meetings produce timely decisions, clear ownership, useful escalation, reliable follow-up, and measurable operating effects.
Problem Evidence Closure Review
A final problem-solving review of causal evidence, countermeasure effect, side effects, control changes, ownership, and residual recurrence risk before formal closure.
Measurement Data Integrity Review
A review of measurement data for source traceability, completeness, units, method consistency, abnormal values, system changes, corrections, and suitability for analysis.
Improvement Pipeline Conversion Rate
A flow metric showing how effectively qualified improvement opportunities progress into active work, interpreted together with readiness, aging, capacity, active WIP, and completion performance.
Daily Management Signal Quality
The clarity, timeliness, specificity, visibility, ownership, and actionability of signals used to show abnormal operating conditions in daily management.
Leader Delegation Effectiveness
The ability to move appropriate decisions and responsibilities to the lowest responsible level while keeping outcomes, authority, guardrails, escalation triggers, support, and accountability clear.
Standard Work Deviation Log
A focused record of meaningful departures from the approved standard method used to identify repeated barriers, unstable conditions, or opportunities for controlled method improvement.
Maintenance Execution Feedback Loop
A work-management loop that feeds actual labor, parts, access, sequence, findings, estimate differences, and completion evidence from executed maintenance back into future planning.
Production Recovery Priority Logic
A shared method for deciding what should run first after disruption using customer impact, readiness, constraint protection, material availability, sequence, downstream capacity, and recovery effort.
Process Governance Escalation Thresholds
Defined risk, time, authority, cross-functional, and control-failure conditions that determine when a process issue should remain local or move to a higher governance level.
Problem Definition Quality Review
A structured check of the observed performance gap, scope, location, timing, evidence, stratification, and assumptions before root-cause analysis begins.
Measurement Uncertainty vs Gage R&R
A comparison of two measurement concepts: Gage R&R evaluates repeatability and reproducibility within a measurement process, while measurement uncertainty expresses uncertainty associated with a reported measurement result.