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IEC PAS 63312
Edition 1.0 2021-01
PUBLICLY AVAILABLE
SPECIFICATION
PRE-STANDARD
colour
inside
Technical specification for flame detector system of boiler
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IEC PAS 63312
Edition 1.0 2021-01
PUBLICLY AVAILABLE
SPECIFICATION
PRE-STANDARD
colour
inside
Technical specification for flame detector system of boiler
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.060 ISBN 978-2-8322-9241-9
– 2 – IEC PAS 63312:2021 IEC 2021
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 General . 12
4.1 General requirements . 12
4.2 Power supply . 12
4.3 Functions and performance of flame detector . 12
4.4 Signal output. 13
4.5 Interchangeability . 13
4.6 Installation . 13
4.7 Commissioning . 13
4.8 Inspection and maintenance . 13
4.9 Tests . 14
5 Classification and requirements (design) . 14
5.1 Classification of flame detectors . 14
5.1.1 Classification principle . 14
5.1.2 Classification according to detection principle . 14
5.1.3 Classification according to the structure of flame detector . 15
5.1.4 Classification according to installation method . 15
5.1.5 Classification according to safety level . 15
5.2 Technical requirements of flame detectors . 15
5.2.1 Basic functional requirements . 15
5.2.2 Basic performance requirements . 17
5.2.3 Reliability requirements . 18
5.3 Technical requirements of cooling system (optional, depending upon the
actual requirements of flame detectors) . 20
5.3.1 Functional requirements of cooling air system . 20
5.3.2 Performance requirements of cooling air system . 21
6 Installation and commissioning requirements . 22
6.1 System installation requirements . 22
6.1.1 Installation preparations . 22
6.1.2 Installation of flame detectors . 23
6.1.3 Acceptance of installation . 26
6.2 Commissioning requirements after installation . 27
6.2.1 Static commissioning . 27
6.2.2 Dynamic commissioning . 29
6.2.3 Contents of system dynamic commissioning . 29
6.2.4 Acceptance of system commissioning . 31
7 Requirements on inspection, operation and maintenance . 32
7.1 System inspection and maintenance requirements . 32
7.1.1 Preparations . 32
7.1.2 Power supply inspection . 33
7.1.3 Installation inspection of flame detectors . 33
7.1.4 Dismantlement and inspection of optical fibers . 33
7.1.5 Inspection and maintenance of analysis and processing unit . 34
7.1.6 Inspection and maintenance of cables . 35
7.1.7 Inspection and maintenance of cooling air system . 35
7.2 System test requirements . 36
7.2.1 Power system test . 36
7.2.2 Inspection on the analysis and processing unit . 36
7.2.3 Inspection and tests on flame detector probes . 36
7.2.4 Basic functional tests . 37
7.2.5 Parameter adjustment test . 37
7.2.6 Check of parameter settings . 37
7.2.7 Tests on cooling fans . 37
7.3 System operation . 38
7.3.1 Restart . 38
7.3.2 Maintenance during operation . 38
7.3.3 Inspections before boiler shutdown . 39
7.4 System maintenance requirements . 39
7.4.1 Routine maintenance . 39
7.4.2 Regular maintenance . 39
7.5 Archives . 40
8 Test methods and requirements . 41
8.1 Test methods . 41
8.1.1 General . 41
8.1.2 Test reference conditions . 41
8.1.3 Test instruments and equipment . 41
8.1.4 Test items and methods . 42
8.2 Equipment factory acceptance test. 44
8.2.1 Test items . 44
8.2.2 Judgment of eligibility . 44
8.3 Type test . 44
8.3.1 General . 44
8.3.2 Situations requiring type test . 44
8.3.3 Sampling principles . 44
8.3.4 Judgment of eligibility in type test . 45
Annex A (informative) Composition of flame detector system . 46
A.1 General . 46
A.2 Flame detector . 46
A.3 Signal transmission components and cables . 47
A.4 Analysis and engineering tools . 47
A.5 Power system . 47
A.6 Cooling air system (optical, depending on design requirements) . 47
Annex B (informative) Marking, packaging, transportation and storage of flame
detectors . 48
B.1 Marking . 48
B.2 Packaging . 48
B.3 Transportation . 48
B.4 Storage . 48
– 4 – IEC PAS 63312:2021 IEC 2021
Figure A.1 – Schematic diagram of a typical light signal-based flame probe . 46
Figure A.2 – Schematic diagram of an imaging-based flame detector probe . 46
Table 1 – Configuration of monitoring and interlocking instruments of flame detector
cooling air system . 20
Table 2 – Installation acceptance criteria of flame detector system . 26
Table 3 – Commissioning acceptance items of flame detector system . 32
Table 4 – Test instruments and equipment . 41
...