IEC PAS 63312:2021

Technical specification for flame detector system of boiler

IEC PAS 63312:2021 deals with the general requirements, classification and technical requirements, installation and commissioning requirements, inspection and maintenance requirements, test methods and requirements of radiant energy sensing flame detectors (including IR, UV, visible light, and imaging-based flame detectors).
This PAS is applicable to the type selection, design, installation, commissioning, inspection, maintenance and acceptance of the radiant energy sensing flame detectors, which monitor the flame status of burners

General Information

• Status: Published
• Publication Date: 13-Jan-2021
• ICS: 27.060 - Burners. Boilers
• Technical Committee: SC 65B - Measurement and control devices
• Current Stage: PPUB - Publication issued
• Start Date: 28-Jan-2021
• Completion Date: 14-Jan-2021

Standards Content (Sample)

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
...