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Every task type · Instrumentation

Instrument calibration

An instrument that has been in tolerance at every calibration for five years has earned a longer interval, and one that was out last time has earned a shorter one. The as-found data decides; the calendar cannot.

What does instrument calibration involve?

Instrument calibration checks: as-found and as-left error at each calibration point, drift since last calibration. Observed by calibrated reference standard; calibration management software to trend the as-found data. The interval converts to one derived from as-found drift per instrument; instruments in a legal metrology, safety or quality-critical role keep a maximum interval set by the relevant standard or regulator.

partly
part of the task converts to a condition and part stays on the calendar
Calibrated reference standard; calibration management software to trend the as-found data
how the condition is observed
Instrumentation
asset class
Condition that replaces the interval
As-found error at the last calibration approaching the tolerance, or drift rate projecting the instrument past tolerance before the next scheduled date; a calibration interval should be set from the as-found history per instrument
Reading that proves it
As-found and as-left error at each calibration point, drift since last calibration
Why the interval stays
The interval converts to one derived from as-found drift per instrument; instruments in a legal metrology, safety or quality-critical role keep a maximum interval set by the relevant standard or regulator.
Evidence an auditor accepts
Calibration certificate per instrument with as-found and as-left values and the interval justification
First move
Pull the as-found values for the last three calibrations of each instrument; that alone will halve some intervals and double others.

What it is evidence for

Clause references from the published standards text. A clause marked reference is named, not reproduced.

Calendar tasks a monitored condition could replace ISO 55001:2014 9.1 · ISO 55001:2014 8.1 · ISO 55001:2014 6.2.2 · ISO 55001:2014 8.2 · ISO 55001:2014 10.3 · ISO 45001:2018 8.1.3
ISO 55001:2014 9.1 Monitoring, measurement, analysis and evaluation

The organization decides what is to be monitored and measured, which methods of monitoring, measurement, analysis and evaluation will give valid results, when monitoring and measuring take place, and when results are analysed and evaluated. It assesses and reports on how the assets perform, on how asset management perf...

Evidence an auditor accepts: Performance measurement framework covering asset, asset management and system performance; Condition, reliability and cost data with defined collection methods; Periodic performance reports (financial and non-financial)
ISO 55001:2014 8.1 Operational planning and control

The organization plans, carries out and controls the processes needed to satisfy requirements and to deliver three things: the asset management plans set out under 6.2, the actions on risks and opportunities decided under 6.1, and the preventive and corrective actions decided under clauses 10.1 and 10.2. It does so by ...

Evidence an auditor accepts: Procedures and work instructions for life-cycle activities (acquire, operate, maintain, renew, dispose); Process criteria and performance measures; Work records demonstrating activities carried out as planned
ISO 55001:2014 6.2.2 Planning to achieve asset management objectives

The organization joins up its planning for asset management objectives with the rest of its planning, including finance, human resources and other support functions. It sets up, documents and maintains asset management plans that state the method and criteria for making decisions, the processes and methods for managing...

Evidence an auditor accepts: Asset management plans per asset class or system with activities, resources, owners and dates; Documented decision-making method and criteria for prioritising activities; Life-cycle cost or whole-of-life models supporting the plans
ISO 55001:2014 8.2 Management of change

Before any planned change is made, whether temporary or permanent, that could affect whether the asset management objectives are met, its risks are assessed, and the organization makes sure those risks are handled as 6.1 and 6.2.2 require. It controls changes it has planned and reviews the consequences of changes that ...

Evidence an auditor accepts: Change management procedure covering assets, processes, organization and suppliers; Change risk assessments prior to implementation; Post-implementation reviews of unintended consequences
ISO 55001:2014 10.3 Continual improvement

The organization keeps making both its asset management and its system for it more suitable, more adequate and more effective.

Evidence an auditor accepts: Improvement register with sources (audits, reviews, performance analysis, incidents); Evidence of improvements implemented and their measured effect; Trend of performance measures over time
ISO 45001:2018 8.1.3 Management of change

The organization sets up processes to put in place, and keep under control, planned changes, temporary or permanent, that affect OH&S performance. These include: new products, services and processes, or alterations to existing ones (such as where workplaces are and what surrounds them, how work is organized, working co...

Evidence an auditor accepts: Management of change procedure covering all listed change types; Change risk assessments before implementation; Records of unintended changes reviewed and mitigated

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Condensate drain and pan check · Gas detector bump test and calibration