Pulp & Paper — Asset Integrity

Rigorous integrity management — built for the Kraft process.

Systematic boiler integrity programs — with inspection intervals that are never missed.

Strim structures systematic tube inspection campaigns, tracking UT thickness readings, waterwall condition scores and header integrity data across every boiler section. Automated scheduling ensures inspection intervals are never missed, and trending analysis highlights tubes approaching minimum acceptable thickness well in advance of failure.

Zone-by-zone tube inspection scheduling and UT thickness history

Waterwall condition trending with minimum thickness alerts

Campaign-to-campaign comparison reports for tube replacement planning

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Every pressure vessel in your mill — compliant, documented and audit-ready.

Strim manages inspection due dates, pressure test records and engineer competency certifications for all NR-13-regulated equipment — from digesters and evaporators to steam headers and auxiliary boilers. Compliance reports and audit packs are generated on demand, eliminating the frantic last-minute data gathering before Ministry of Labour inspections.

NR-13 inspection due dates tracked with automatic reminders

Pressure test records and hydraulic test certificates per vessel

One-click compliance audit pack with full inspection evidence

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Map every CML, track every reading — stay ahead of chemical attack.

Strim maps corrosion monitoring locations across ClO₂ towers, washers, retention towers and process piping throughout the bleach plant. Wall thickness trends and corrosion rates are tracked per location, enabling your integrity team to plan maintenance based on real data — before reaching minimum acceptable wall thickness.

CML-level corrosion monitoring with UT thickness history per stage

Corrosion rate trending with minimum wall thickness alerts

Remaining life calculation and replacement planning reports

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The Challenge

Pulp mill integrity failures stop entire production lines.

Recovery boiler failures, digester pressure events and bleach plant leaks are not isolated equipment failures — they shut entire mills down, sometimes for weeks, with consequences that run into the hundreds of millions.

Recovery Boiler Tube Integrity

Recovery boiler tube failures — including explosive smelt-water reactions — are among the most catastrophic events in pulp mill operations. Systematic tube inspection, UT thickness monitoring and waterwall condition tracking are essential for safe continuous operation.

Digester & Continuous Cooker NR-13 Compliance

High-temperature, high-pressure digesters are subject to severe chemical attack and mechanical fatigue in a Kraft process environment. NR-13 mandates documented inspection cycles, competency records and integrity assessments — with legal liability for the responsible engineer.

Bleach Plant Chemical Corrosion

The bleaching sequence creates one of the most aggressive corrosion environments in all of process industry. ClO₂, NaOH and H₂O₂ attack vessel and piping materials at rates that require systematic monitoring and proactive thickness management.

150+

Assets managed on Strim

97%

NR-13 compliance rate across Strim clients

45%

Reduction in unplanned shutdown events

2×

Faster inspection report generation

Key Capabilities

Purpose-built for every critical system in your mill.

Recovery Boiler Integrity

Tube inspection scheduling, waterwall condition tracking and header monitoring — structured by campaign with trend comparison and replacement planning outputs.

Digester & Continuous Cooker

NR-13 inspection management, pressure testing records, shell thickness history and condition trending for continuous and batch digesters in Kraft and sulphite processes.

Bleach Plant Vessel Integrity

Corrosion mapping across ClO₂ towers, retention towers and washers — with CML-level wall thickness monitoring and minimum thickness alert management.

Steam & Condensate Systems

Boiler, header, steam trap and condensate system inspection management — including NR-13 scheduling, UT readings and system condition assessment records.

Wood Yard & Fiber Line

Chipper, conveyor, chip storage and fiber handling equipment inspection and lifecycle management — from incoming wood to pulp washed and ready for bleaching.

Evaporation & Chemical Recovery

Black liquor evaporator, causticizer, lime kiln and green liquor vessel integrity tracking — managed as part of the integrated chemical recovery system lifecycle.

Trusted by pulp and paper producers

Strim asset integrity management for pulp and paper mills

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Ready to eliminate the compliance gaps that cause unplanned shutdowns?

Schedule a demo and see how Strim helps pulp and paper integrity teams manage boiler safety, NR-13 compliance and vessel corrosion — with the structure and traceability that regulators and engineers of record require.

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