What Should Buyers Include In A Water Jet Reel Turn-up System RFQ?

Editorial note: This guide is vendor-neutral. Sample values are illustrative only and must be replaced with mill-specific data.

Introduction

A water jet reel turn-up system is not a commodity purchase. It interacts with the paper machine, the reel, the water supply, the control system, and the mill's safety and maintenance practices. If the request for quotation (RFQ) is vague, suppliers will make different assumptions. The result is a set of quotations that look competitive on price but are not technically comparable.

A strong RFQ does three things: it defines the process window, fixes the interface boundaries, and states how success will be measured. This guide provides a practical structure that lets suppliers quote accurately and buyers evaluate objectively.

Start with a Master Project Data Sheet

Use one master data sheet as the single source of truth. Every supplier should receive the same information in the same format. Where data is unknown, state it as an assumption and require the supplier to confirm it.

Do not use vague terms such as "high speed" or "various grades." Give numbers and ranges. If the mill produces lightweight coated paper and heavy kraft board on the same machine, state both extremes.

A typical data sheet should include the following:

Require suppliers to confirm or challenge this data sheet early in the quotation phase.

Define Performance Requirements, Not Just Hardware

Suppliers should quote against measurable performance, not only a list of components. Include requirements such as:

• Turn-up success rate at minimum, normal, and maximum operating speeds.
• Tail transfer time from cut to full reel engagement.
• Web break rate caused by the turn-up system.
• Water consumption per turn-up and during continuous operation.
• Compressed air consumption, if used.
• System availability and mean time between failures (MTBF).
• Noise level at operator positions.
• Safety performance, including guarding, interlocks, and emergency stops.
• Maintenance access and expected wear-part replacement intervals.

For each requirement, ask the supplier to state the basis of the guarantee and any conditions that could invalidate it. A turn-up success rate may depend on water quality, paper grade, or reel speed. Those dependencies must be declared.

Sample performance target table:

Every number should be justified by the supplier in the proposal and validated during the performance test.

Specify Water Supply, Nozzle, and Drainage Requirements

Water jet turn-up systems are highly sensitive to water quality and pressure stability. The RFQ should include:

• Water quality: temperature, pH, conductivity, suspended solids, filtration level, and any contaminants that could clog nozzles.
• Pressure and flow: required pressure and flow at the nozzle, not only at the header. State minimum and maximum values.
• Nozzle details: number of nozzles, spray pattern, orifice size, material, and expected service life.
• Redundancy: whether standby pumps, filters, or nozzles are required.
• Drainage and catch basin: location, capacity, return-water handling, and splash protection.
• Shutdown and purge: automatic cleaning or purge sequence to prevent nozzle blockage.

Field failures in this area are often caused by:

• Inadequate filtration allowing abrasive particles to erode or clog nozzles.
• Water hammer when the turn-up valve closes rapidly, damaging pumps and piping.
• Pressure measured only at the pump skid, not at the nozzle, where line losses can exceed 1015 bar on a long supply run.
• Catch basins undersized for the flow, causing overflow into machine pits and bearing housings.

Ask suppliers to provide a water balance, a head-loss calculation from the supply header to the nozzle, and a nozzle maintenance schedule. If the mill's water quality varies seasonally, say so. A system that works in a laboratory may fail in a mill with hard, recycled, or fluctuating water.

Define Control and Automation Requirements

The control system determines how easily the turn-up system integrates with the paper machine. Specify:

• Automation level: manual, semi-automatic, or fully automatic.
• PLC and HMI: preferred brand or acceptable alternatives, screen language, and user access levels.
• Communication: protocols such as Ethernet/IP, PROFINET, Modbus TCP, or hardwired I/O.
• Recipe management: how grades and speeds are stored and recalled.
• Safety logic: emergency stop, guards, interlocks, safe torque off, and lockout/tagout (LOTO) provisions.
• Data logging: turn-up history, alarms, water pressure, nozzle status, and diagnostics.
• Remote support: secure access for troubleshooting, if permitted by mill IT.
• Cybersecurity: network segregation and access control requirements.

Avoid over-specifying a single brand unless the mill already standardizes on it. Instead, specify the function, interface, and data requirements. This keeps competition open while protecting integration.

Clarify Mechanical Interfaces and Installation Responsibilities

Most RFQ disputes occur at the interface. Use a responsibility matrix to state who supplies, installs, connects, tests, and commissions each item.

Example responsibility matrix:

Also include site constraints: available space, ceiling height, floor loading, vibration limits, washdown practices, and any permit-to-work requirements.

Define Delivery Scope, Documentation, and Training

The RFQ should clearly state what is included in the quotation and what is excluded. A complete delivery scope typically includes:

• Complete turn-up system with nozzles, valves, pumps, filters, and piping.
• Control panel, PLC, HMI, and field instruments.
• Safety guards, sensors, and interlocks.
• Spare parts for startup and recommended one-year spares.
• Installation supervision and commissioning support.
• Operator and maintenance training.
• Warranty terms and response times.
• After-sales support and spare parts availability.

Require documentation such as general arrangement drawings, P&IDs, electrical schematics, PLC I/O lists, operating manuals, maintenance manuals, spare parts catalogs, and material certificates. If PLC code must be provided, state whether it is licensed, open, or backed up.

Establish Acceptance Criteria: FAT, SAT, and Performance Test

Acceptance criteria protect both buyer and supplier. Define them before the order is placed.

• Factory Acceptance Test (FAT): functional checks, safety logic, HMI screens, and component verification before shipment. Involve mill maintenance personnel where possible.
• Site Acceptance Test (SAT): installation verification, utility checks, and dry-run testing.
• Performance test: turn-ups at minimum, normal, and maximum speed across the agreed grade range. A defensible protocol is at least 100 consecutive turn-ups at each condition, with the success threshold stated in the RFQ.
• Quality checks: tail transfer, reel start, web tension, and absence of defects such as flags or wrinkles at the reel start.
• Safety validation: guarding, interlocks, emergency stops, and LOTO verification.
• Punch-list closure: all outstanding items completed within an agreed period.
• Warranty start: defined from successful acceptance or first production use.

Make the test conditions explicit. If a performance guarantee depends on a specific grade or speed, state that in the RFQ.

Make Supplier Proposals Easy to Compare

Number every requirement and ask suppliers to respond with a clear compliance statement:

• Comply
• Comply with deviation with a clear description
• Not comply
• Not applicable

Then require a commercial breakdown: equipment price, installation, commissioning, training, spare parts, freight, taxes, and payment terms. A single lump sum makes comparison difficult.

A weighted evaluation matrix keeps scoring objective. Example:

Adjust weights to match the mill's priorities. Require suppliers to list deviations separately. Unmarked deviations should not be accepted after the order.

Reference Standards, Safety, and Compliance

Reference the standards and codes that apply to the project and region:

• ISO 12100 machinery risk assessment and safety design.
• ISO 13849-1 safety-related parts of control systems.
• IEC 60204-1 electrical equipment of machines.
• Local electrical, plumbing, and pressure-equipment codes.
• Mill-specific EHS, permit-to-work, and lockout/tagout rules.
• High-pressure water safety requirements, including guarding, relief valves, and operator protection. Where jet pressure is capable of penetrating skin, the system must be treated as hazardous energy and guarded accordingly.

Ask suppliers to declare compliance and provide documentation such as declarations of conformity, test certificates, and material traceability. If CE, UL, or other marks are required, state that clearly.

Avoid Common RFQ Mistakes Lessons from the Field

The following recurring errors consistently increase project risk:

• Specifying "high speed" without a numeric range.
• Omitting minimum and maximum paper grades.
• Defining water pressure at the header instead of at the nozzle.
• Leaving installation and interface responsibilities unclear.
• Accepting quotations with hidden assumptions or unmarked deviations.
• Failing to define FAT, SAT, and performance test criteria.
• Ignoring spare parts, training, and long-term support costs.
• Using different data sheets for different suppliers.

Each mistake increases the risk of change orders, downtime, and a system that does not meet production needs.

Realistic example 1: A mill specifies "200 bar at the pump skid" without requiring a head-loss calculation. The supplier chooses a smaller supply line to reduce cost. The actual nozzle pressure is 175 bar, turn-ups fail intermittently, and weeks are lost troubleshooting. A simple requirement to declare nozzle pressure would have prevented the problem.

Realistic example 2: A mill accepts a guarantee without a defined grade basis. At commissioning, the supplier excludes all heavy board grades because the guarantee covers only the baseline grade. The performance test must define the grade and speed conditions explicitly before the order is placed.

Selecting an OEM Partner

A qualified OEM partner can help translate mill requirements into a clear, quotable proposal but the buyer must set the framework. Evaluate potential partners on proven experience with machines of similar width, speed, and grade, as well as on the quality of their engineering documentation, their safety approach, and their after-sales support structure. Ask for references from installations with comparable operating conditions and follow up with those mills directly.

The right partner will challenge unrealistic assumptions, flag specification contradictions early, and be transparent about guarantee conditions. The wrong partner will accept every requirement without questions and then manage expectations during commissioning.

Final Checklist Before Issuing the RFQ

Before sending the RFQ, verify that it includes:

• [ ] A complete master project data sheet with numeric values.
• [ ] Measurable performance targets with guarantee basis.
• [ ] Water quality, pressure-at-nozzle, and drainage requirements.
• [ ] Control, automation, and cybersecurity specifications.
• [ ] A responsibility matrix for all mechanical and electrical interfaces.
• [ ] A full delivery scope, documentation list, and training plan.
• [ ] FAT, SAT, and performance test protocols with explicit conditions.
• [ ] A compliance-response format and commercial breakdown structure.
• [ ] Applicable standards, safety codes, and high-pressure water hazards.
• [ ] A weighted evaluation matrix to support objective supplier selection.

A well-structured RFQ takes time to prepare, but it pays for itself in comparable quotations, fewer change orders, and a turn-up system that performs as promised from the first day of operation.