ABCDEFGHIJKLMNOPQRSTUVWXYZ
1
Step No.ProcedureStandard Reference (IEC/ISO)DescriptionResponsible PersonFrequencyRemarks
2
1Equipment Identification & LabelingISO/IEC 17025:2017 (Clause 6.4)Each instrument must be uniquely identified with an asset code/serial number before calibration.Lab TechnicianBefore calibrationEnsure traceability
3
2Environmental Condition VerificationIEC 60060-1 (Clause 7)Check temperature, humidity, and pressure. Testing only under permissible conditions.Lab SupervisorEach test sessionMaintain log records
4
3Reference Standard SelectionISO/IEC 17025:2017 (Clause 6.5)Use only calibrated reference standards with valid traceability to national/international standards.Calibration EngineerEach calibrationCheck certificate validity
5
4Instrument Warm-upIEC 60060-2Power on the equipment for recommended warm-up time to stabilize readings.Lab TechnicianBefore calibrationAs per OEM manual
6
5Calibration Procedure ExecutionISO/IEC 17025:2017, IEC 60060-2Perform calibration steps such as AC/DC HV measurement, Tan Delta, IR, etc. Record results.Calibration EngineerAs per scheduleFollow SOP strictly
7
6Uncertainty EvaluationISO/IEC 17025:2017 (Clause 7.6)Calculate measurement uncertainty as per GUM (Guide to the Expression of Uncertainty in Measurement).Quality EngineerEach calibrationInclude in report
8
7Calibration Report PreparationISO/IEC 17025:2017 (Clause 7.8)Prepare and issue calibration certificate including traceability, results, and uncertainties.QA/QC ManagerEach calibrationSend to client
9
8Record Keeping & ArchivingISO/IEC 17025:2017 (Clause 8.4)Store calibration data digitally and physically with secure backup for traceability.Lab AdminOngoingMaintain min. 5 years records
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100