Continuous process, heavy plant
Commissioning software for continuous plants where start-up is one event you only get to do once.
Paper machines, pulp lines, rolling mills and smelters start as a whole. Deskely holds the mechanical, electrical, instrumentation and drive evidence per system so the start-up sequence runs against proven equipment rather than assumptions.
- Plants
- Paper, pulp, steel, metals
- Nature
- Continuous, coupled process
- Focus
- Drives, loops, interlocks
- Gate
- Start-up and first product
Choose your project type
The problem
A continuous plant cannot be started in pieces.
Sections are coupled: a paper machine will not run until approach flow, headbox, press, dryer and reel sections all hold their drive synchronisation, and a rolling mill will not run until stand-to-stand tension control, hydraulic AGC and interlocks across the whole line are proven.
Start-up windows are expensive and rare, so anything discovered during the first run costs disproportionately.
Deskely reports readiness per system against defined record sets, so the last unproven loop is known weeks before the start-up window opens.
Setting up the register
Sections, drives and loops carry the acceptance evidence.
The plant is modelled as sections and systems — approach flow, headbox, press, dryer, reel, or reheat, mill stand, cooling — with equipment, drives, instruments and loops tagged beneath.
P&IDs, single lines, cable schedules and instrument indexes are parsed so loop check lists are generated from the same data as installation lists.
Interlock and trip testing is registered explicitly, because that is where start-up risk concentrates.
Execution
Loop checks and no-load runs are signed as records with results.
Loop checks, motor solo runs, direction and rotation checks, lubrication flushing, alignment and interlock testing are completed on tablet against the tag.
Measured values are captured, not summarised, so a later fault has a baseline to compare against.
Punch is categorised by whether it blocks the start-up sequence, which is the only prioritisation that matters at that stage.
Start-up and handover
Start-up is authorised from a signed readiness position.
System readiness certificates are issued from the records, and the start-up sequence follows the systems that are proven.
Handover to production includes the test values, settings and supplier documentation per system, which is what the mill's reliability engineers use for years afterwards.
Residual punch remains live and owned rather than closed by declaration.
Line speed and tension proving
No-load runs prove the drives turn. Speed and tension proving prove the sections will run together, at rate, without breaking the web or the strip.
A paper machine or rolling mill start-up fails least often on an individual drive fault and most often on section-to-section coordination: a dryer section running fractionally out of speed ratio to the press section, or a mill stand's tension control fighting the stand ahead of it. These faults are invisible during a no-load solo run and only appear once real material — and real tension — is introduced.
Speed ratio and tension proving trials therefore have to be run as their own staged test, incrementally, from an initial slow crawl to full line speed, with the actual measured speed ratios and tension values recorded at each stage rather than a single pass/fail statement at the end.
Deskely holds each proving stage as its own record against the section pairing involved, with the measured values retained, so when the mill or machine is later trimmed for grade or gauge changes the reliability team has a real speed-and-tension baseline to compare against, not a memory of how start-up went.
How it runs
From erection to first saleable product.
Coupled continuous plants need system-level readiness that is derived from evidence, not from a progress claim.
- 01
Model sections and systems
The line broken into process sections with equipment, drives, instruments and loops beneath.
- 02
Generate loop lists
Instrument indexes and cable schedules parsed so loop checks come from the same register.
- 03
Template heavy plant records
Alignment, lubrication, flushing, solo run and interlock tests defined per equipment type.
- 04
Capture measured values
Results recorded on tablet at the equipment, giving reliability a real baseline.
- 05
Prioritise punch by start-up
Items categorised by whether they block the start-up sequence, with owners and dates.
- 06
Certify system readiness
System certificates issued from signed records to authorise each stage of start-up.
FAQ
Questions about Pulp, paper and metals scopes.
Keep reading
Manufacturing commissioning
The full sector view: asset registers, FAT and SAT evidence, punch lists and line acceptance.
Read moreITR records
Installation and test records defined once per equipment type and instantiated across every asset.
Read moreCertificates
Mechanical completion, SAT and line acceptance certificates issued from signed records.
Read moreOther manufacturing project types: Greenfield plants and new factories, Production line installation and SAT, Automotive body, paint and assembly, Food, beverage and hygienic process, Pharmaceutical and life sciences facilities, Battery gigafactories and cell plants, Semiconductor fabs and cleanroom fit-out, Warehouse automation and intralogistics, Brownfield upgrades and line relocations.
