Learn what a Material Review Board (MRB) is, how the MRB process works, common dispositions, key documentation, and best practices for manufacturing quality.
Since the 2015 updates to ISO 9001, IATF 16949, AS9100, and ISO 13485, manufacturers in automotive, aerospace, electronics, and medical devices face stricter requirements for controlling nonconforming outputs. Even a minor material deviation in these sectors can compromise patient safety, flight integrity, or product reliability. A structured process for evaluating defective materials is no longer optional.
The material review board (MRB) is a cross-functional team that serves as the formal decision-making body for handling nonconforming materials. It protects safety, regulatory compliance, and delivery schedules by ensuring that every defective or suspect part is reviewed, documented, and resolved before it moves further in the supply chain.
Consider a practical scenario: in 2024, a medical device assembly line in India receives a batch of injection-moulded polymer parts for catheter connectors. Incoming inspection reveals the inner bore diameter is too small, potentially compromising sterility sealing. Production halts. The batch is quarantined, a nonconformance report is raised, and the MRB must decide whether to rework, scrap, or seek a customer concession. Without a functioning material review board process, those parts could either reach patients or sit gathering dust in quarantine indefinitely.
This article covers MRB meaning in quality management, the full MRB workflow, disposition categories, required documentation, common challenges, and how manufacturing ERP software like LOGIC ERP can support non-conforming material management from detection to closure.
A material review board (MRB) is a cross-functional team within manufacturing and regulated industries that evaluates nonconforming materials or products and determines their appropriate disposition. Depending on the quality procedure and authorisation requirements, MRB decisions may include rework, repair, use as is, scrap or return to the supplier.
The MRB evaluates nonconforming materials and determines their fate. It operates inside the organisation’s quality management system and is closely tied to document control, NCR creation, and non-conforming material management. Think of it as the quality gatekeeper: no defective part moves forward, gets reworked, or gets scrapped without a documented review from this board.
Here is a simple example. A CNC shop in 2023 produces a lot of 100 shafts intended to hold a 0.005-inch tolerance. Measurement reveals many shafts are off by 0.006 to 0.008 inch. The material review board convenes. Quality engineers determine whether the deviation affects assembly fit. Production estimates cost and time to re-grind. The MRB then makes a disposition decision: rework or scrap, documented with rationale and signatures.
MRB is referenced or implied in standards like ISO 9001:2015 Clause 8.7 (control of nonconforming outputs), IATF 16949 for automotive, and AS9100 for aerospace, even when not named explicitly.
The core purpose of an MRB is straightforward: ensure that nonconforming material does not reach customers or downstream processes, while minimising unnecessary scrap and rework. MRB processes help reduce scrap and rework costs in manufacturing by making informed, data-backed decisions rather than defaulting to disposal.
The MRB plays a crucial role in cost management by minimising delays and unnecessary disposal. Key objectives include:
An MRB functions to ensure compliance with quality standards and safety regulations. This is especially critical in medical device manufacturing and aerospace, where a defective part reaching the field can trigger recalls, regulatory action, or safety incidents.
A well-run material review function also supports audit readiness. MRB rationale, risk assessments, and signed disposition records must be accessible for internal audits and regulatory inspections. Quality teams that can produce these records on demand demonstrate process maturity to auditors.
The MRB is intentionally cross-functional. Each MRB member evaluates nonconforming items from their departmental perspective, which prevents blind spots in disposition decisions.
The MRB typically includes representatives from quality, engineering, and production. Participants also include representatives from quality assurance, engineering, and procurement. In some organisations, materials management, regulatory representatives, or customer representatives may join for high-risk cases.
Quality assurance is typically the leading role in an MRB. The MRB is chaired by a quality department member, usually a quality manager, who runs meetings, sets the agenda, and maintains MRB records. Quality assurance leads the MRB process and maintains NCR records, ensuring nothing falls through the cracks.
Engineering assesses if nonconforming materials can be reworked or repaired. Engineers determine whether a deviation affects fit, form, function, or safety, and whether technical feasibility supports a rework path.
Production representatives advise on manufacturability and scheduling impacts. They evaluate how a rework order will affect line capacity, cycle time, and delivery commitments. Operations bring practical constraints into the conversation.
Procurement manages supplier communications regarding nonconforming materials. When a supplier part is at fault, procurement coordinates return-to-vendor logistics and supplier corrective action requests, updating supplier scorecards accordingly.
In regulated industries such as medical devices (under FDA 21 CFR 820 or ISO 13485), regulatory representatives may need to participate for dispositions involving patient safety, and customer approval may be required before releasing material under concession.
Organisations typically define quorum rules, for example requiring at least quality, engineering, and production board members present to vote on a disposition.
The material review board process is a standardized workflow that starts with detection of a nonconformance and ends with disposition execution and documentation closure. The MRB process includes specific steps such as identifying issues and assessing risks. Here is how the MRB process works in practice:
Detection of Nonconformance
The process starts when someone identifies a problem: a failed incoming inspection, an out-of-trend lab result, a barcode mismatch, or an IoT sensor alert on the assembly line. In a 2022 production environment, this might be a dimensional check revealing metal plating thickness outside specification.
NCR Creation
A nonconformance report (NCR) is created for each defect. The report captures part number, batch or lot, supplier information, quantity affected, defect description, detection point, photos, and measurement instruments used. This record feeds into the QMS or ERP as the formal trigger for MRB review.
Segregation and Quarantine
Nonconforming materials are quarantined before MRB review. Affected items are physically moved to a designated hold area and tagged. Material status is updated in the inventory management software to block accidental issuance to production or shipment. Physical segregation and digital holds must align to prevent mix-ups.
MRB Review
The MRB meets to evaluate the NCR and decide on disposition. Board members review NCR data, current drawings, specifications, inspection results, and historical quality records. The nonconforming product may be inspected as is by the board.
Evaluation and Risk Assessment
The board assesses impact on function, safety, regulatory compliance, and customer requirements. Tools like risk matrices, FMEA, or engineering calculations inform the evaluation. Production data and nonconformance data from previous batches help identify whether this is an isolated event or a pattern.
Disposition Decision
The MRB decides on actions such as scrap, rework, or return to the vendor. Other options include repair, use as is, or downgrade. MRB decisions must be documented and signed by authorised personnel.
Execution
The MRB process includes execution of the approved disposition. If the chosen disposition is reworked, a rework order is raised. If scrap, a scrap transaction is posted. If returned to the supplier, an RTV is initiated through procurement, often using a return merchandise authorisation (RMA) process.
Verification and Closure
Corrected parts are re-inspected. Records are updated. The MRB case is closed. If the issue appears systemic, a CAPA may be triggered for root cause investigation.
MRB disposition categories are the standard decision types used to classify how non-conforming materials will be handled after a documented review. Disposition decisions must be documented and signed by members, with rationale and risk assessment attached.
Use as is — MRB can recommend use as is if the nonconformity is acceptable, meaning the deviation does not affect fit, form, function, safety, or regulatory compliance. For example, a minor cosmetic blemish on a non-visible internal surface of an appliance housing in 2021 production may qualify. In regulated industries, this disposition typically requires extra justification and sometimes customer approval.
Rework — Rework involves correcting nonconforming material to meet original specifications. The part goes back through controlled processing with documented work instructions, followed by re-inspection and full traceability in records. An example: re-machining oversized shafts to bring them within tolerance.
Repair — Repair modifies material to an acceptable state but not full compliance with original specifications. It restores functional usability. In aerospace and medical devices, repair typically requires customer concession or regulatory oversight, since the result may differ from the approved design.
Scrap — Scrap means permanently removing nonconforming material from production. In regulated environments, organisations must reconcile quantities, document destruction, and sometimes provide photographic evidence. When you scrap parts, the cost feeds into quality metrics and management reviews.
Return to Supplier — Return to vendor applies when defects originate from the supplier. The incoming material is sent back under agreed contractual terms. This disposition is often linked to supplier corrective action requests and updated supplier scorecards to track vendor performance over time.
Regrade or Downgrade — Sometimes material that fails a high-specification requirement is acceptable for a lower-grade application. For example, a metal sheet that fails a premium finish standard may still work for internal, non-visible components.
Every MRB outcome must include documented rationale, risk assessment, and authorisation signatures. This makes the process audit-ready and defensible.
Documentation is central to the MRB process, both for internal control and for compliance with standards like ISO 9001:2015, ISO 13485, AS9100, and FDA 21 CFR 820. ISO 9001:2015 requires documented control of nonconforming outputs, and missing records are among the most frequently cited audit findings.
Key document types include:
In digital systems, audit trails and version histories provide evidence of who changed what and when in the MRB record, which stays visible and retrievable for the required retention period.
NCR, MRB, and CAPA are related but distinct processes in a quality management system. Mixing them up can cause compliance gaps and confusion during audits.
A nonconformance report (NCR) is the record that documents detection of non-conforming materials or a process deviation. It captures what went wrong, how many units are affected, and where the issue was found. The NCR serves as the trigger for MRB review.
The material review is the decision-making and disposition process. It focuses on what should happen to the specific nonconforming material right now. The MRB meets to evaluate the NCR and decide on disposition.
CAPA (corrective and preventive action) is the structured investigation and improvement process. MRB integrates with CAPA to prevent recurrence of defects. While MRB handles the immediate batch, CAPA addresses root causes and implements corrective actions across future production.
| Aspect | NCR | MRB | CAPA |
|---|---|---|---|
| Purpose | Document the nonconformance | Decide disposition of material | Investigate root cause; prevent recurrence |
| Typical owner | Inspection / QC | Cross-functional board | Quality + Engineering |
| Timing | Immediately at detection | Within defined hours/days | Triggered if systemic or recurring |
| Output | Defect record | Disposition decision and action | Root cause investigation, process change |
Example: In a medical device plant in 2025, an NCR documents a batch of catheters with wall thickness out of tolerance. The MRB decides to scrap the batch. A CAPA is then opened to investigate the worn tooling and inadequate maintenance schedule that caused the problem. The CAPA implements enhanced tooling inspection intervals and an additional in-process check to prevent recurrence.
ERP or QMS should link NCR numbers, MRB cases, and CAPA records so auditors can trace the full history from detection to systemic fix.
Most manufacturers struggle with MRB bottlenecks at some point, especially when the process relies on paper, spreadsheets, or manual routing.
Delayed Decisions — Unclear authority, infrequent meetings, or email-based approvals allow quarantined inventory to pile up. Manual routing can stall MRB processes significantly, particularly when key approvers are unavailable. Material sits in hold areas, time sensitive production schedules slip, and working capital gets tied up.
Traceability Issues — Rejected or held stock that is not clearly identified in the warehouse or in systems creates compliance risk. If material status in the digital system does not match what is physically on the floor, nonconforming material can accidentally enter production or shipment.
Documentation Gaps — Missing rationale for use as dispositions, absent signatures, or incomplete NCRs are common audit findings in automotive and medical device industries. These gaps undermine audit readiness and can lead to regulatory non-conformities.
Recurring Supplier Issues — The same defective materials keep arriving from the same vendor, repeatedly triggering MRB reviews without effective follow-up through CAPA or supplier development. Limited visibility into patterns causes recurring nonconformance issues that never get resolved at the source.
Disconnected Systems — When QMS, ERP, MES, and spreadsheets operate independently, duplicate data entry and inconsistent inventory records make it difficult to manage nonconformances effectively. Disconnected data leads to delayed MRB approvals and limited visibility into MRB trend metrics over 12 to 24 month periods.
A plant failing a 2022 ISO 9001 surveillance audit due to weak MRB documentation is not an unusual scenario. Auditors expect to see clear links between NCR, MRB disposition, execution evidence, and closure.
Standardising the MRB workflow and using risk-based decision criteria can significantly reduce scrap, lead times, and audit findings.
Define Clear Procedures — Document the MRB procedure with flowcharts covering detection, NCR creation, MRB review, disposition types, escalation rules, and handoffs to CAPA or change control. Every quality manager should be able to hand this document to a new team member and have them understand the process.
Establish Decision Criteria — Define objective criteria for each disposition. Specify when engineering or customer approval is mandatory and how risk must be documented. This prevents subjective decisions driven by production pressure.
Set Service-Level Targets — Aim to disposition most NCRs within 48 hours. Regular MRB meetings or digital on-demand MRB reviews prevent ageing inventory from gathering dust in quarantine. Track MRB cycle time as a key metric.
Train Board Members — Train MRB members on relevant standards (ISO 9001, IATF 16949, AS9100, ISO 13485) and on documenting MRB decisions with objective evidence, not opinions. Include practical exercises on risk assessment and root cause investigation.
Track Metrics — Monitor MRB cycle time, scrap and rework cost, repeat MRB cases per part number, and supplier-related NCR rates. Use this production data to identify systemic issues before they become chronic. MIS reporting can help surface these trends.
Integrate with CAPA and Root-Cause Tools — Connecting MRB with structured root-cause analysis (5-Why, fishbone, FMEA) turns the review board from a reactive gatekeeper into a driver of continuous improvement.
Modern MRB in manufacturing ERP connects quality decisions with inventory, production, and purchasing data in real time. Digital MRB systems improve traceability and reduce delays compared to paper-based or spreadsheet-driven processes.
ERP can link NCRs and MRB cases directly to item masters, batches, work orders, and purchase orders, making it easy to see which materials are on hold or scrapped. When MRB places material on hold, integrated status controls in ERP, WMS, or MES prevent it from being issued to production or shipped, enforcing MRB decisions at the system level.
Automated routing prevents lost NCRs and speeds up reviews. Digital MRB workflows route cases automatically to appropriate approvers, capture e-signatures, and maintain audit trails of every change made to MRB records. This eliminates the delays that manual routing introduces.
Reporting capabilities matter too. Dashboards showing open MRB cases, ageing, scrap and rework cost by part or supplier, and trends feed into management reviews and help quality teams spot recurring issues before they escalate.
LOGIC ERP can support MRB-related activities when properly configured: recording NCR data, tagging inventory status, linking quality records with production and purchasing modules, and streamlining manufacturing processes across departments. However, MRB-specific features vary by implementation. Organisations should configure ERP workflows to match their documented MRB procedure and regulatory needs rather than assuming out-of-the-box compliance.
MRB in the medical device, pharmaceutical, and aerospace sectors faces stricter regulatory expectations than general manufacturing. MRB processes are critical for compliance in regulated industries where product failures can directly harm people.
Regulations like FDA 21 CFR Part 820, EU MDR 2017/745, ISO 13485:2016, and AS9100D all emphasise control of nonconforming products, traceability, and documented review of disposition decisions. While these regulations do not always use the term "MRB," they require equivalent mechanisms.
In medical device manufacturing, specific constraints apply. There is high emphasis on patient safety, traceability down to serial or lot level, and strong justification before any use as is or repair dispositions. MRB often works closely with Regulatory Affairs and clinical or field teams to understand potential impact on patients and post-market surveillance data. For finished goods destined for implantation or direct patient contact, a use as is decision without thorough risk analysis would be unacceptable.
Documentation expectations are elevated. Detailed NCRs, MRB minutes, risk assessments (per ISO 14971), and approval signatures must be retained for the product’s lifetime plus regulatory retention periods. In a 2023 catheter manufacturer, for example, MRB decisions may require customer or notified-body involvement, and every disposition must be fully backed by risk analysis.
Digital MRB processes in regulated industries must also address requirements for electronic records and signatures (e.g., FDA 21 CFR Part 11), validated systems, and controlled access. This is not a nice-to-have; it is a compliance requirement that pharmaceutical and medical device companies must address during system implementation.
The material review board is a core element of quality control and non-conforming material management for any serious manufacturing operation. It is how quality teams, engineers, and production leaders collaborate to make controlled, traceable decisions about defective materials while protecting product quality and production continuity.
The benefits are concrete: improved safety and compliance, reduced scrap and rework, faster MRB decisions, and stronger traceability from NCR creation through disposition closure and into CAPA when needed.
If you are looking to strengthen your MRB process, start by documenting your current workflow, defining standard disposition categories, and identifying where gaps exist in roles, documentation, or system integration. Then pilot digital MRB tracking within your existing QMS or ERP environment to see where automation and status controls can eliminate delays.
LOGIC ERP can be part of this journey. By connecting quality records with inventory, purchasing, and production data, it helps ensure that your MRB process is not just documented on paper but enforced in the systems your team uses every day. Explore how integrated manufacturing ERP can support your nonconforming material control, from detection to closure.
Call at +91-73411-41176 / +91-73411-41175 or send us an email at sales@logicerp.com to book a free demo today!
A material review board is a cross-functional group that evaluates nonconforming materials or products and determines the appropriate disposition under established quality procedures. It typically includes representatives from quality, engineering, production, and procurement who review evidence and make documented decisions on how to handle defective material.
The purpose of an MRB is to ensure that nonconforming materials are assessed, documented, and handled through an authorised process. This protects product quality, safety, and compliance while reducing unnecessary scrap and production delays.
Typical participants include quality assurance (which chairs the board), engineering, production, and supplier quality. Procurement, inventory management, regulatory representatives, or customer representatives may participate depending on the issue severity and industry requirements.
The five common dispositions are used as is (accept without change), rework (correct to meet original specifications), repair (restore functionality without full specification compliance), scrap (permanently remove from inventory), and return to supplier (send back when defects originate from the vendor). The permitted options depend on specifications, contractual requirements, and safety considerations.
An NCR documents the nonconformance and its relevant details. The MRB is the authorised review board that evaluates the NCR and determines or approves the appropriate disposition. The NCR is the trigger; MRB is the decision mechanism.
MRB primarily addresses the immediate disposition of identified nonconforming material. CAPA addresses the investigation of root causes and implements corrective actions to prevent recurrence of the nonconformance across future batches.
An MRB review may be required when materials or products fail specified requirements, when NCRs exceed defined thresholds, when high-risk or time sensitive nonconformances arise, or when industry regulations and customer contracts demand formal review and disposition.
ERP software connects material identification, inventory status, quality records, production data, disposition decisions, and reporting in a single system. This improves traceability, enforces hold controls, supports automated routing of approvals, and provides dashboards for tracking open cases, scrap cost, and supplier performance.
The MRB process works by identifying nonconforming materials, creating a Nonconformance Report (NCR), quarantining the affected stock, reviewing the issue in a cross-functional meeting, assessing risks and compliance, making a disposition decision, executing that decision, and finally verifying and documenting closure.
MRB decisions typically include use as is, rework, repair, scrap, and return to supplier. Each decision depends on the defect severity, regulatory requirements, and cost considerations.
"Use as is" means the MRB approves the nonconforming material for use without modification because the deviation does not affect safety, function, or compliance. This disposition often requires engineering or customer approval.
NCR creation is the formal documentation step where the nonconformance is recorded with details such as part number, batch, defect description, and detection point. It triggers the MRB review process.
The disposition decision is made after evaluating the nonconformance’s impact on quality, safety, and production. The MRB reviews evidence, assesses risks, and then documents and approves the final disposition.
Raw materials that fail inspection or deviate from specifications are flagged, quarantined, and reviewed by the MRB. The board decides whether to accept, rework, scrap, or return the raw materials to the supplier based on quality and compliance criteria.
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