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BS IEC 61831:1999

Superseded

Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

On-line analyser systems. Guide to design and installation

Available format(s)

Hardcopy , PDF

Superseded date

31-03-2012

Language(s)

English

Published date

15-10-1999

Introduction
1 General
    1.1 Scope
    1.2 Reference documents
    1.3 Preliminary remarks
    1.4 Further considerations
    1.5 Reliability
    1.6 Design
    1.7 Centralisation
    1.8 Local mounting
    1.9 Pre-assembled systems
2 Health and safety
    2.1 Introduction
    2.2 Prevention of explosions and fires
          2.2.1 Flammable gases and vapours
          2.2.2 Combustible dusts
          2.2.3 Flammable gases, vapours and combustible dusts
    2.3 Prevention of toxic hazards
    2.4 Plant safety
    2.5 Radiation hazards
    2.6 Safety facilities
    2.7 Manual shut-down facilities
    2.8 Noise
    2.9 Alarm indication
3 Housings
    3.1 Introduction
    3.2 Definitions
    3.3 Selection of housing
          3.3.1 Analyser case
          3.3.2 Analyser cabinet
          3.3.3 Analyser shelter
          3.3.4 Analyser house (AH)
    3.4 Area classification and toxic danger
          3.4.1 Electrical area classification
          3.4.2 Toxic danger
    3.5 Construction and mounting
          3.5.1 General
          3.5.2 Analyser housing
          3.5.3 Analyser house (AH)
    3.6 Analyser housing ventilation requirements
          3.6.1 General
          3.6.2 Analyser cases
          3.6.3 Analyser shelters
          3.6.4 Analyser cabinets and analyser houses
    3.7 Design for natural ventilation
          3.7.1 Ventilation requirements
          3.7.2 Heating requirements
    3.8 Design for forced ventilation
          3.8.1 Ventilation requirements
          3.8.2 Air intake system
          3.8.3 Fan requirements
          3.8.4 Air distribution requirements
          3.8.5 Heating requirement
    3.9 Analyser housing safety monitors and alarms
          3.9.1 General
          3.9.2 Ventilation failure
          3.9.3 Flammable gas or vapour detection
          3.9.4 Toxic gas detection
          3.9.5 Oxygen deficiency detection
          3.9.6 Fire detection and protection
          3.9.7 Purged equipment
          3.9.8 Alarms
4 Sampling systems
    4.1 Introduction
    4.2 Definitions
    4.3 General requirements
    4.4 Sample point location
    4.5 Fast circulating systems
    4.6 By-pass systems
    4.7 Sample recovery systems
    4.8 Special considerations
    4.9 Multi-stream systems
    4.10 Construction
          4.10.1 General
          4.10.2 Material selection
          4.10.3 Flushing facilities
          4.10.4 Blockage removal
          4.10.5 Heat tracing and insulation
          4.10.6 Minimising risks from leakage
          4.10.7 Location of equipment
          4.10.8 Instrumentation
          4.10.9 Identification
    4.11 Effluent disposal
          4.11.1 General
          4.11.2 Vapour
          4.11.3 Liquid
    4.12 Calibration facilities
    4.13 Automatic calibration
5 Analyser communications
    5.1 Introduction
    5.2 Signal transmission
    5.3 Safety
    5.4 Cables
    5.5 Linearisation
    5.6 Use of signal
    5.7 Alarms
    5.8 Verification/calibration
Annex A - Typical analyser process line sampling probe for
          line sizes NPS 2" and above
Annex B - Determination of sample probe lengths
Annex C - Sample system calculations
Annex D - Natural ventilation calculations
Annex E - Forced ventilation calculations
Annex F - Example of verification/calibration sequence of data
          to computer
Annex G - Analyser house with forced ventilation - Summary of
          recommended control shut-down actions for flammable
          hazard operation
Annex H - Analyser houses with forced ventilation - Ventilation
          failure and flammable gas detection trip logic
Annex I - Typical analyser system schematics
Annex J - Example schematic showing a typical wall penetration
          using a transit
Annex K - Bibliography

Applies to an on-line analyser system. It provides the necessary guidance for the system supplier and user to specify or design a complete analyser system from sample point in the process to the final output for display or control purposes.

This technical report provides the necessary guidance for system supplier and user to specify or design a complete analyser system from sample point in the process to the final output for display or control purpose.

Committee
GEL/65/2
DevelopmentNote
Supersedes 95/213969 DC. (08/2004)
DocumentType
Standard
Pages
86
PublisherName
British Standards Institution
Status
Superseded
SupersededBy
Supersedes

Standards Relationship
IEC TR 61831:2011 Identical

PD 6686:2006 Guidance on directives, regulations and standards related to prevention of fire and explosion in the process industries

BS 5925:1991 Code of practice for ventilation principles and designing for natural ventilation
IEC 60079-1:2014 RLV Explosive atmospheres - Part 1: Equipment protection by flameproof enclosures "d"
IEC 60079-10:2002 Electrical apparatus for explosive gas atmospheres - Part 10: Classification of hazardous areas
IEC 61207-2:1994 Expression of performance of gas analyzers - Part 2: Oxygen in gas (utilizing high-temperature electrochemical sensors)
IEC 61115:1992 Expression of performance of sample handling systems for process analyzers
EN 50054:1998 Electrical apparatus for the detection and measurement of combustible gases - General requirements and test methods
IEC 61241-1-1:1999 Electrical apparatus for use in the presence of combustible dust - Part 1-1: Electrical apparatus protected by enclosures and surface temperature limitation - Specification for apparatus
EEMUA 175 : 2013 EEMUA CODE OF PRACTICE: CALIBRATION AND VALIDATION OF PROCESS ANALYSERS
IEC 61508-5:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 5: Examples of methods for the determination of safety integrity levels (see Functional Safety and IEC 61508)
IEC 60746-4:1992 Expression of performance of electrochemical analyzers - Part 4: Dissolved oxygen in water measured by membrane covered amperometric sensors
IEC 61508-4:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 4: Definitions and abbreviations (see Functional Safety and IEC 61508)
IEC 61508-3:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 3: Software requirements (see Functional Safety and IEC 61508)
IEC 60746-5:1992 Expression of performance of electrochemical analyzers - Part 5: Oxidation-reduction potential or redox potential
IEC 61207-6:2014 Expression of performance of gas analyzers - Part 6: Photometric analyzers
EN 50057:1998 Electrical apparatus for the detection and measurement of combustible gases - Performance requirements for Group II apparatus indicating up to 100 % lower explosive limit
IEC 60746-2:2003 Expression of performance of electrochemical analyzers - Part 2: pH value
IEC 61241-3:1997 Electrical apparatus for use in the presence of combustible dust - Part 3: Classification of areas where combustible dust are or may be present
BS 6467-2:1988 Electrical apparatus with protection by enclosure for use in the presence of combustible dusts Guide to selection, installation and maintenance
IEC 60079-11:2011 Explosive atmospheres - Part 11: Equipment protection by intrinsic safety "i"
IEC 60746-3:2002 Expression of performance of electrochemical analyzers - Part 3: Electrolytic conductivity
IEC 60529:1989+AMD1:1999+AMD2:2013 CSV Degrees of protection provided by enclosures (IP Code)
IEC 60746-1:2003 Expression of performance of electrochemical analyzers - Part 1: General
IEC 61241-2-3:1994 Electrical apparatus for use in the presence of combustible dust - Part 2: Test methods - Section 3: Method for determining minimum ignition energy of dust/air mixtures
IEC 60079-14:2013 Explosive atmospheres - Part 14: Electrical installations design, selection and erection
IEC 61241-1-2:1999 Electrical apparatus for use in the presence of combustible dust - Part 1-2: Electrical apparatus protected by enclosures and surface temperature limitation - Selection, installation and maintenance
BS 6467-1:1985 Electrical apparatus with protection by enclosure for use in the presence of combustible dusts Specification for apparatus
BS 7535:1992 Guide to the use of electrical apparatus complying with BS 5501 or BS 6941 in the presence of combustible dusts
IEC 61285:2015 Industrial-process control - Safety of analyser houses
IEC 61207-1:2010 Expression of performance of gas analyzers - Part 1: General
IEC 61241-2-1:1994 Electrical apparatus for use in the presence of combustible dust - Part 2: Test methods - Section 1: Methods for determining the minimum ignition temperatures of dust
IEC 61508-1:2010 Functional safety of electrical/electronic/programmable electronic safety-related systems - Part 1: General requirements (see Functional Safety and IEC 61508)
EN 50016:2002 Electrical apparatus for potentially explosive atmospheres - Pressurized apparatus "p"
IEC 61207-3:2002 Gas analyzers - Expression of performance - Part 3: Paramagnetic oxygen analyzers
IEC 60079-13:2017 Explosive atmospheres - Part 13: Equipment protection by pressurized room "p" and artificially ventilated room "v"
API MPM CH8.2 : 2016 MANUAL OF PETROLEUM MEASUREMENT STANDARDS - CHAPTER 8.2: STANDARD PRACTICE FOR AUTOMATIC SAMPLING OF PETROLEUM AND PETROLEUM PRODUCTS

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