Replacement Planning Resource
Glass-Lined Equipment Replacement Checklist
A practical starting checklist for replacement enquiries when the existing glass-lined reactor, vessel or assembly is aging, damaged, unavailable or no longer suitable for the current process.
Before asking for a replacement
Define what must be retained—and what can change
A replacement project is not automatically a request to reproduce an existing vessel. The useful first step is to identify the operating objective: maintain an existing process connection, resolve a known service issue, add a missing functional requirement, or create a new equipment basis around a legacy installation.
Important: GLP reviews replacement enquiries against available project evidence and stated operating requirements. An exact copy, reverse engineering, refurbishment or reglassing outcome should not be assumed from photographs alone.
Keep
Items that must remain compatible with the plant, such as an existing connection route, platform arrangement, support location or downstream interface.
Change
Known issues or new requirements: process conditions, batch practice, mixing duty, heat-transfer approach, material handling or documentation needs.
Unknown
Missing data should be marked as unknown rather than estimated. This makes the engineering review more efficient and avoids building an RFQ around assumptions.
Decision route
Separate the immediate replacement need from the information required for an engineering review, quotation basis or further plant confirmation.
Existing equipment identity
Collect the evidence that identifies the installed unit
Good replacement enquiries begin with traceable plant information. The purpose is not to create a complete engineering package before contact; it is to provide a clear starting record for discussion.
- Nameplate photographs showing the available manufacturer, model, serial or equipment identification information.
- Overall photographs of the installed unit, including visible supports, access constraints and connected equipment.
- Any available general arrangement drawing, nozzle sketch, previous data sheet, purchase order or inspection record.
- Close-up photographs of the affected area where a specific operating, lining or maintenance concern is relevant.
- A concise statement of why the replacement is being considered now.
Where the original drawing is unavailable, clearly labelled photographs and measured interface information are generally more useful than a single distant equipment image.
Operating record
Record the process basis separately from the old equipment
The installed unit tells part of the story. The operating duty explains whether the next unit should follow the previous arrangement or be reviewed differently.
Duty
State the process purpose, batch or continuous operation, product handling characteristics and the reason the equipment is used at this point in the process.
Conditions
Provide the available temperature, pressure or vacuum context, media information, cycle pattern and any abnormal operating events relevant to the replacement decision.
Interfaces
Identify required process connections, utility interfaces, discharge path, drive arrangement and plant-side restrictions that must be considered.
For a detailed review of nozzles, piping routes and mechanical interfaces, see the Process Interfaces & Nozzle Review. For an evidence-based review of an existing installed unit, see Existing Equipment & Specification Review.
What to send with an enquiry
Replacement RFQ checklist
This checklist helps a buyer or project team assemble a usable enquiry without implying that every item must already be confirmed.
Common replacement mistakes
Keep the enquiry useful from the start
Using only a photo
Photos support identification, but do not independently define the process duty, geometry or required interfaces.
Copying old data without review
An old specification may not reflect current operating practice, changes in product, utilities, compliance requirements or plant layout.
Combining confirmed and assumed data
Label what is known, estimated and unavailable. This is especially important when multiple project teams are contributing information.
Leaving documentation until the end
Document expectations should be included in the RFQ or purchase order basis, alongside the equipment and interface requirements.
FAQ
Replacement checklist questions
Can a replacement enquiry start without the original drawing?
Yes. Provide the best available evidence: nameplate images, photographs, plant-side measurements, process context and a clear list of unknown items. The review route can then be determined from the evidence available.
Is the old equipment model enough for a quotation?
It may help identify the installed unit, but it should not be treated as the full current replacement specification. Process duty, interfaces and documentation expectations still need to be reviewed.
What if the plant needs to retain existing piping connections?
State this at the beginning and provide the available nozzle, piping and layout information. It is a core review item, not a detail to add after a quotation basis is prepared.
Should cleaning and product changeover be included?
Yes, when they affect equipment selection, internal arrangement, operating practice or material handling. See the related application and engineering resources for a structured discussion.
Project contact desk
Start with the evidence you have
Send the available equipment record, project objective and process context. GLP can help establish the information needed for a focused replacement review and quotation discussion.
Discuss a Replacement ProjectStart with the objective. Confirm the process duty and the existing unit evidence.
Use this glass-lined equipment replacement checklist to organize existing-unit evidence, process requirements, interface details and RFQ inputs before supplier review.