ReferenceHPROC11

Version2.0

Issue Date17/02/2026

Approved BySean Ashton

Next Review17/02/2027

ClassificationCRGI Information

Version History

Version	Date	Author	Changes
1.0	01/04/2025	Sean Ashton	Initial issue (S.O.P 4.1)
2.0	17/02/2026	Sean Ashton	Consolidated to flowchart procedure format — staff model, manuals as core reference

Calibration Control Procedure Flowchart

ISO 9001:2015 Clause 7.1.5 — Monitoring and measuring resources

Procedure Overview

This procedure defines how CRGI Solutions controls calibration of monitoring and measuring equipment. As a virtual engineering consultancy, primary calibrated resources are design software licences (validated per HREG13), measuring instruments used during site visits, and any client-provided equipment. The Operations Manager maintains the Calibration Log (HREG12).

Calibration Control Process Flow

Operations Manager

Sean Ashton

Identify

Identify equipment requiring calibration

Includes:
• Measuring instruments
• Software validation
• Client-provided equipment
• Test equipment

Record in Equipment Register

HREG11

Set calibration schedule & method

Operations Manager

Sean Ashton

Calibrate

Perform calibration per schedule

Within tolerance?

Yes

Record calibration result

HREG12

Quarantine equipment & assess impact

Label equipment with calibration status

Operations Manager

Sean Ashton

Review

Review calibration records

Update schedule if needed

Report status at Management Review

Process / Activity

Decision Point

Document / Record

Completion / Conformance

Escalation / Issue

Version History

Calibration Control Procedure Flowchart

Calibration Control Process Flow

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