Review Responsibilities Across Key Project Roles

Good to see you again. Previously, you separated the roles of product requirements, contracts, EN 15085, EN ISO 3834, EN ISO 14731, and internal procedures. That map is only useful if the people and functions behind it are also distinct.

In a production-focused review, several parties may look at the same weld, but they do not make the same decisions. A responsible welding coordinator can identify that a joint cannot be welded or inspected as specified. That does not make the coordinator authorized to redefine the joint’s structural purpose, weld performance requirement, or fatigue-sensitive geometry.

This lesson establishes those boundaries among the design authority, manufacturer, responsible welding coordinator, inspection function, and customer. The practical aim is to help you raise findings to the correct owner, with a clear release consequence, rather than allowing a technical concern to become an informal and uncontrolled design change.

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Start with functions, not job titles

Titles vary considerably between rail projects. “Chief engineer,” “welding engineer,” “quality manager,” “NDT Level 3,” “customer representative,” and “project manager” may each hold different delegated authority in different companies.

So do not infer authority from seniority or job title. Instead, ask:

1. Who defines the product requirement?
2. Who is responsible for delivering controlled welding production?
3. Who has delegated technical authority over welding coordination?
4. Who evaluates conformity and records evidence?
5. Who can approve a contractual deviation or accept a changed requirement?

One person or organization can legitimately hold more than one role. For example:

• A manufacturer may also be the design authority for an assembly under its design responsibility.
• The customer may retain design authority while outsourcing production.
• An external NDT provider may perform inspection activities for the manufacturer.
• A customer inspector may witness an activity, without becoming responsible for the manufacturer’s welding coordination.

The roles can overlap. The responsibilities must still be explicitly separated.

The following distinction is fundamental:

A finding identifies a problem; an authority decides its disposition; the manufacturer implements the controlled resolution.

Before applying this to rail work, review the core terminology and allocation principle in EN ISO 14731.

A useful caution: the provided EN ISO 14731 copy is an older edition. Use it here to understand the enduring logic of role allocation, then consult your organization’s controlled current edition whenever you are applying a requirement formally.

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The five roles in a welding design review

1. The design authority: owns the product’s technical definition

The design authority is the function authorized to define and change the product design. In rail work, that normally includes the decisions that establish what the weld must achieve in service, not merely how it should look on a drawing.

Its review responsibilities typically include:

• defining the design basis, service conditions, loading assumptions, and relevant safety requirements;
• selecting or approving parent materials, thicknesses, tolerances, and component geometry;
• defining the welded-joint arrangement and welding-related information on the drawing;
• assigning weld-performance-related design inputs, including the CP level where EN 15085-3 applies;
• ensuring that design calculations, validation, fatigue considerations, and design verification are performed by competent persons;
• reviewing and approving design changes that could affect product function, safety, fatigue performance, or contractual requirements;
• issuing controlled drawing and specification revisions.

The design authority may consult welding coordination during design. It should do so early, because a technically valid structural concept can still be impossible to weld, inspect, access, or control repeatedly in production.

But consultation is not a transfer of ownership. The responsible welding coordinator may state, for example:

“The specified joint cannot be accessed with the proposed process and cannot be visually examined after closure.”

The design authority must then decide how the design requirement will be resolved. Possible responses might include redesigning the joint, revising the assembly sequence, changing an inspection arrangement, or supplying further design justification. The welding coordinator can recommend technically credible options, but should not independently approve a changed load path or weld detail.

2. The manufacturer: owns controlled welding production

EN ISO 14731 defines the manufacturer as the person or organization responsible for welding production. This is the organizational role that remains accountable for delivering a conforming welded product.

The manufacturer’s responsibilities include:

• reviewing whether it can meet the applicable contract, product, and welding requirements;
• maintaining an appropriate EN 15085 scope and classification for the work undertaken;
• appointing competent welding-coordination personnel and defining their authority;
• providing qualified procedures, personnel, equipment, materials, consumables, work instructions, and inspection arrangements;
• controlling subcontracted welding and retaining responsibility for the controls it has outsourced;
• maintaining traceability, records, nonconformity control, and corrective action;
• ensuring that production does not proceed on the basis of obsolete, contradictory, or unapproved information.

The manufacturer may delegate tasks, but it cannot delegate away its responsibility. If an external welding coordinator, subcontractor, or inspection provider is used, the manufacturer still needs a controlled interface: defined scope, competence evidence, records, communication routes, and release responsibilities.

3. The responsible welding coordinator: owns the welding-technical control within delegated authority

The responsible welding coordinator (RWC) is the person appointed by the manufacturer to carry out welding-coordination tasks within a documented scope of competence and authority.

For a production-focused design review, the RWC’s core question is:

Can this assembly be welded and inspected in conformity with the contract and the approved product definition?

The RWC’s review scope commonly includes:

• welding feasibility and access;
• accessibility for visual examination and NDT;
• joint preparation, fit-up, tolerances, sequence, and distortion implications;
• material weldability and consumable compatibility;
• availability and coverage of WPSs, WPQRs, welder qualifications, and operator qualifications;
• suitability of the intended process and equipment;
• inspection stages, inspection access, and traceability needs;
• production trials, first-off checks, or additional controls where justified;
• technical disposition of matters that remain within the approved design and the RWC’s delegated authority.

This is substantial authority. It must be real rather than ceremonial: the RWC needs authority to issue technical instructions, withhold release of an unsuitable welding route, and require missing evidence before production continues.

However, the RWC is not automatically authorized to:

• redefine the CP level or other design classification;
• reduce a required weld size because it is difficult to make;
• alter a fatigue-sensitive detail, structural geometry, or material specification;
• accept a deviation from a customer requirement;
• approve a repair that changes joint design or could affect in-service performance, unless that authority is explicitly delegated through the proper route.

4. The inspection function: evaluates conformity and creates evidence

The inspection function includes personnel who perform, supervise, witness, or evaluate welding-related examination. Depending on the organization, it may include welding inspectors, visual inspectors, NDT personnel, quality inspectors, and inspection coordinators.

Its responsibilities usually include:

• performing examination to the approved method, extent, timing, and acceptance basis;
• confirming that access, surface condition, and timing permit meaningful examination;
• recording objective results, including nonconforming results;
• identifying incomplete welding, dimensional issues, visible imperfections, or unavailable inspection access;
• maintaining inspection records and traceability;
• communicating results through the defined nonconformity and release process.

Inspection is a part of welding coordination in the EN ISO 14731 sense, but the inspection function should not be confused with design authority.

An inspector may report:

“The specified examination cannot be completed because assembly closure prevents probe access.”

That is an important conformity finding. It is not, by itself, an authorization to omit the examination, reduce its extent, or redefine the acceptance criteria.

Similarly, an inspection report can state whether a weld meets the stated acceptance basis. It does not automatically determine whether a nonconforming weld may remain in service. That disposition may require the RWC, design authority, customer, or another formally designated authority, depending on the nature of the issue and the contract.

5. The customer: owns only the authority retained by contract

The customer sets contractual requirements and may retain specific approval or acceptance rights. In some projects, the customer is also the design authority. In others, the customer purchases a design-and-build package and acts mainly as the accepting party.

Typical customer responsibilities or rights may include:

• defining contractual standards, editions, documentation, inspection, and approval requirements;
• identifying customer hold points or witness points;
• approving departures where the contract reserves that approval;
• agreeing changes to required inspection methods or extents;
• approving concessions that affect product use, delivery, warranty, or contractual acceptance;
• approving repair dispositions where repair could affect safety, function, durability, or service performance.

Customer acceptance does not remove the manufacturer’s responsibility to comply with its own welding controls. Nor does it mean that every minor shop-floor question requires customer approval. The contract and the project responsibility matrix should identify which matters remain internal to the manufacturer and which require escalation.

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A compact responsibility map

Role	Primary review responsibility	Typical evidence or output	Boundary not to cross without delegation
Design authority	Defines and changes the product’s technical requirements	Approved drawing, design specification, classification input, design-change notice	Cannot assume a technically difficult detail will be resolved by production without a controlled decision
Manufacturer	Delivers controlled, conforming welding production	Capability review, organization chart, controlled procedures, records, release controls	Cannot transfer its compliance responsibility to a coordinator, subcontractor, or inspector
Responsible welding coordinator	Verifies welding and inspection feasibility; controls welding-technical implementation	Design-review finding, welding plan, WPS allocation, qualification matrix, technical instruction	Cannot independently alter structural intent, CP level, fatigue-sensitive geometry, or contractual requirement
Inspection function	Evaluates conformity and records objective evidence	VT report, NDT report, dimensional record, nonconformity report	Cannot waive specified inspection or redesign a joint merely because inspection is impractical
Customer	Exercises contractual acceptance and approval rights	Approved deviation, concession, inspection agreement, customer release	Cannot replace the manufacturer’s day-to-day welding-coordination system

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EN 15085-specific boundaries: design, welding review, and repair

The ECWRV guideline is useful here because it directly distinguishes the manufacturer’s activity types, the RWC’s organizational position, the designer’s CP responsibility, and different repair-decision levels. Treat it as implementation guidance, not as a replacement for your controlled EN 15085 parts or project contract.

The practical message is clear:

• The designer defines the CP level during design.
• The RWC conducts, or assigns, the welding design review to confirm feasibility, accessibility, and contractual conformity.
• The manufacturer putting the product into circulation remains responsible for the controlled outcome.
• The customer may need to agree a departure, especially where a repair or altered joint could influence use.

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One finding, five roles: an access and inspection case

Consider a rail-vehicle stainless-steel equipment enclosure. The drawing specifies an internal weld, but the planned final closure operation blocks access to the weld. The specified production route therefore prevents meaningful visual examination after welding and may also prevent any required surface or volumetric examination.

The RWC records the following finding:

Finding: Weld W-14 is located inside the enclosure. The current assembly sequence closes the access opening before the specified examination can be performed.
Evidence: Drawing revision C and proposed assembly sequence show no remaining access path for examination.
Risk: The stated inspection requirement cannot be demonstrated, and an inaccessible joint may also hinder cleaning, repair, and traceability.
Request: Issue an approved design and inspection resolution before release of the closure operation.

Each role now has a different responsibility.

Role	Proper response
Design authority	Determines whether the joint location, enclosure geometry, or assembly sequence must change; confirms whether an alternative inspection arrangement can satisfy the product requirement.
Manufacturer	Places the affected operation under a controlled hold, coordinates the response, prevents use of an assumed workaround, and ensures revised documents reach production.
RWC	Verifies the exact access limitation, evaluates feasible welding and inspection options, identifies qualification implications, and maintains the technical review record.
Inspection function	Confirms what examination is physically possible, identifies constraints objectively, and updates the inspection plan only after the approved resolution is available.
Customer	Reviews or approves the resolution only where the contract, concession process, or customer-held design authority requires this.

The inappropriate response would be: “The welder can make the weld, so proceed and inspect what is accessible.” That silently changes the inspection requirement. It is not a controlled technical decision.

A second inappropriate response would be: “The coordinator says the weld can be reduced or moved.” The coordinator may recommend a better production solution, but the changed weld must be incorporated into the approved product definition by the design authority.

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A decision test for review findings

When you identify a concern, classify it before deciding who must act.

The issue can usually remain within welding coordination when:

• the product requirement is clear and unchanged;
• the joint can be produced within approved WPS and personnel qualification coverage;
• the correction concerns production planning, consumable handling, fit-up control, welding sequence, equipment, or work instructions;
• the corrective action does not change the approved design or contractual requirement;
• the RWC’s written authority explicitly covers the decision.

Examples include selecting the correct approved WPS revision, requiring a preheat check already specified by the WPS, revising the internal weld sequence to reduce distortion within approved limits, or correcting a missing weld-identification record.

The issue must be escalated to the design authority when it affects:

• weld location, geometry, size, length, or type;
• material grade, thickness, or tolerance;
• structural load path or fatigue-sensitive geometry;
• the CP level or other design classification;
• a safety, durability, corrosion, or functional assumption;
• inspection access where the approved product definition does not permit the required examination;
• a repair that alters the joint configuration or raises concerns about in-service performance.

The issue also requires customer involvement when:

• the contract requires customer approval for the deviation or change;
• an agreed inspection extent, method, hold point, or acceptance requirement is being changed;
• a concession is requested for a nonconforming product;
• the customer is the design authority or has retained approval rights;
• a repair has potential consequences for service use, warranty, or contractual acceptance.

Do not phrase an escalation as though the RWC has already approved the changed design. A controlled request should distinguish observation, risk, recommended options, and required decision owner.

For example:

“The proposed change from a continuous weld to intermittent welds may improve distortion control, but it changes the design definition. Welding coordination can assess production feasibility after the design authority confirms the required structural and fatigue performance. The affected weld remains unreleased pending that decision.”

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Turn the roles into a workplace tool

For an active drawing package, make a short authority register alongside your normal design-review checklist. Use only one or two weld groups initially.

Review question	Decision owner	Technical contributors	Required evidence	Release status
Is the weld performance input defined?	Design authority	RWC	Approved drawing or specification	Open until confirmed
Can the joint be welded and inspected as specified?	RWC within manufacturer authority	Production, inspection function	Welding design-review record	Open until feasible route confirmed
Is qualification coverage available?	Manufacturer / RWC	Quality function	WPS, WPQR, welder or operator qualification matrix	Open until coverage confirmed
Does the inspection plan meet the requirement?	Manufacturer / RWC, subject to contract	Inspection function	Inspection and test plan	Open until approved
Can a nonconforming weld remain as produced?	Design authority and/or customer where required	RWC, inspection function, manufacturer	Concession or approved repair disposition	Hold until authorized

This register is deliberately not a design-calculation tool. Its purpose is to prevent the common production failure in which a technically questionable decision is made by the wrong role because the authority was never made explicit.

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Key takeaways

The design authority owns the product’s technical definition and must approve changes to structural, fatigue-sensitive, safety-relevant, or otherwise design-controlled weld details.

The manufacturer remains responsible for controlled welding production, including when coordination, inspection, or welding activities are subcontracted.

The responsible welding coordinator has significant technical authority to assess welding feasibility, qualification coverage, access, inspection practicality, and production controls. That authority does not automatically extend to altering product design requirements.

The inspection function supplies objective conformity evidence. It does not silently waive requirements or determine a design concession unless formally delegated to do so.

The customer exercises the approval and acceptance rights retained by contract; those rights never remove the manufacturer’s responsibility to control its welding operations.

In the next lesson, you will go deeper into the responsible welding coordinator’s assigned tasks, required authority, and organizational interfaces under EN ISO 14731 and EN 15085.