The purpose of this document is to establish, in a general way, suitable procedures for
commissioning and operation of hydraulic machines and associated equipment, and to indicate
how such machines and equipment should be commissioned and operated.
Commissioning and operation of the associated equipment are not described in detail in this
document but is considered in the commissioning and operation procedure as a separate step.
Machines of up to about 15 MW and reference diameters of about 3 m are generally covered
by IEC 62006.
It is understood that a guideline of this type will be binding only if the contracting parties have
agreed upon it.
The guidelines exclude matters of purely commercial interest, except those inextricably
connected with the conduct of commissioning and operation.
The guidelines are not concerned with waterways, gates, drainage pumps, cooling-water
equipment, generators, motor-generators, electrical equipment (e.g. circuit breakers,
transformers) etc., except where they cannot be separated from the hydraulic machinery and
its equipment.
Wherever the guidelines specify that documents, drawings or information are supplied by a
supplier (or by suppliers), each individual supplier should furnish the appropriate information
for its own supply only.

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This part of IEC 60034 applies to large three-phase synchronous generators, having rated
outputs of 10 MVA and above driven by steam turbines or combustion gas turbines. Also
included are synchronous Mvar compensators of the same output range connected to a grid for
the purpose of exchanging reactive power.
This document supplements basic requirements for rotating machines given in IEC 60034-1.
Common requirements are specified together with specific requirements for air, hydrogen or
liquid cooled synchronous generators or compensators.
This document also gives the precautions to be taken when using hydrogen cooled generators
including:
• rotating exciters driven by synchronous generators;
• auxiliary equipment needed for operating the generators;
• parts of the building where hydrogen might accumulate.
These requirements also apply to a synchronous generator driven by both a steam turbine and
a combustion gas turbine as part of a single shaft combined cycle unit.
These requirements do not apply to synchronous generators driven by water (hydraulic)
turbines or wind turbines.
NOTE The precautions taken when using hydrogen are valid for all cases where hydrogen is used as a coolant.

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This part of IEC 60045 is applicable primarily to land-based horizontal steam turbines driving
generators for electrical power services. Some of its provisions are relevant to turbines for
other applications. Generator, gear box and other auxiliaries which are considered as a part
of the system are also mentioned in this document. Detailed specifications for this equipment
are not included in this document.
The purpose of this document is to make an intending purchaser aware of options and
alternatives which it may wish to consider, and to enable it to state its technical requirements
clearly to potential suppliers. Consequently, final technical requirements will be in accordance
with an agreement between the purchaser and the supplier in the contract.

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IEC 60045-1:2020 is applicable primarily to land-based horizontal steam turbines driving generators for electrical power services. Some of its provisions are relevant to turbines for other applications. Generator, gear box and other auxiliaries which are considered as a part of the system are also mentioned in this document. Detailed specifications for this equipment are not included in this document.
The purpose of this document is to make an intending purchaser aware of options and alternatives which it may wish to consider, and to enable it to state its technical requirements clearly to potential suppliers. Consequently, final technical requirements will be in accordance with an agreement between the purchaser and the supplier in the contract.
This second edition cancels and replaces the first edition published in 1991. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous edition:
a) Scope clarification and boundaries of applicability;
b) general update to state-of-the-art technology;
c) integration of product safety: Clause 5;
d) integration of automation, incorporating the former annex on electronic governors: Clause 11;
e) Informative Annex A on welding added.

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This document specifies requirements and gives recommendations for the design, materials of construction, modelling, controlling, fabrication, inspection, testing, installation, start-up and operation of industrial gas turbine (GT) exhaust systems with or without waste heat recovery unit (WHRU). Gas turbines can be on-shore or off-shore for such sectors as oil and gas, chemical and process industries, utilities, or other intensive energy users. For this document, the exhaust system means all items in the turbine exhaust gas stream between the GT exhaust gas collector outlet flange and the termination/s to the atmosphere. The following items are not covered by this document: — heat recovery steam generator equipment (HRSG); — supplementary fired systems; — auxiliary fired systems; — exhaust gas collector (also known as exhaust plenum); — fire detection and extinguishing systems; — emissions controls equipment intended to modify the gaseous composition of the exhaust gas; — WHRUs that are of the firetube type, where the turbine exhaust gas (TEG) passes through the tubes.

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This document is applicable to land-based gas turbines with fluid-film bearings and power outputs greater than 3 MW and an operating speed under load between 3 000 r/min and 30 000 r/min. In some cases (see the list of exclusions below), this includes other rotating machinery coupled either directly or through a gearbox. The evaluation criteria provided in this document are applicable to the vibration of the main input and output bearings of the gearbox but are not applicable to the vibration of the internal gearbox bearings nor to the assessment of the condition of those gears. Specialist techniques required for evaluating the condition of gears are outside the scope of this document. This document is not applicable to the following: i) gas turbines with power outputs greater than 40 MW at rated speeds of 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min (see ISO 20816-2); ii) aero-derivative gas turbines (including gas turbines with dynamic properties similar to those of aero-derivatives); NOTE ISO 3977-3 defines aero-derivatives as aircraft propulsion gas generators adapted to drive mechanical, electrical or marine propulsion equipment. Large differences exist between heavy-duty and aero-derivative gas turbines, for example, in casing flexibility, bearing design, rotor-to-stator mass ratio and mounting structure. Different criteria, therefore, apply for these two turbine types. iii) gas turbines with outputs less than or equal to 3 MW (see ISO 7919-3 and ISO 10816-3); iv) turbine driven generators (see ISO 20816-2, ISO 7919-3 and ISO 10816-3); v) turbine driven pumps (see ISO 10816-7); vi) turbine driven rotary compressors (see ISO 7919-3 and ISO 10816-3); vii) the evaluation of gearbox vibration (see this clause) but does not preclude monitoring of gearbox vibration; viii) the evaluation of combustion vibration but does not preclude monitoring of combustion vibration; ix) rolling element bearing vibration. This document establishes provisions for evaluating the severity of the following in-situ broad-band vibrations: a) structural vibration at all main bearing housings or pedestals measured radial (i.e. transverse) to the shaft axis; b) structural vibration at thrust bearing housings measured in the axial direction; c) vibration of rotating shafts radial (i.e. transverse) to the shaft axis at, or close to, the main bearings. These are in terms of the following: - vibration under normal steady-state operating conditions; - vibration during other (non-steady-state) conditions when transient changes are taking place, including run up or run down, initial loading and load changes; - changes in vibration which can occur during normal steady-state operation.

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ISO 10494:2018 specifies methods for measuring the noise emission of a turbine or turbine set under steady-state operating conditions. It specifies methods for measuring the sound pressure levels on a measurement surface enveloping a source, and for calculating the sound power level produced by the source. It gives requirements for the test environment and instrumentation, as well as techniques for obtaining the surface sound pressure level from which the A-weighted sound power level of the source and octave or one-third-octave band sound power levels are calculated. These methods can be used to conduct performance tests even if the purpose of the test is simply to determine the sound pressure level around the machine.
ISO 10494:2018 is applicable to turbines and turbine sets:
- for power plant and industrial applications (e.g. stationary);
- for installation on board ships, or offshore installations, road and railway vehicles.
ISO 10494:2018 does not apply to gas turbines in aircraft applications.
ISO 10494:2018 is applicable to only the part of the turbine set (turbine, driven equipment and attached components) located above the floor and inside a continuous enveloping measurement surface bounded by this floor.
ISO 10494:2018 is applicable to steady-state operation and excludes transients such as start-up and shut-down, when the noise emission can be higher for short times. Under these conditions, this document does not apply.

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ISO 10494:2018 specifies methods for measuring the noise emission of a turbine or turbine set under steady-state operating conditions. It specifies methods for measuring the sound pressure levels on a measurement surface enveloping a source, and for calculating the sound power level produced by the source. It gives requirements for the test environment and instrumentation, as well as techniques for obtaining the surface sound pressure level from which the A-weighted sound power level of the source and octave or one-third-octave band sound power levels are calculated. These methods can be used to conduct performance tests even if the purpose of the test is simply to determine the sound pressure level around the machine. ISO 10494:2018 is applicable to turbines and turbine sets: - for power plant and industrial applications (e.g. stationary); - for installation on board ships, or offshore installations, road and railway vehicles. ISO 10494:2018 does not apply to gas turbines in aircraft applications. ISO 10494:2018 is applicable to only the part of the turbine set (turbine, driven equipment and attached components) located above the floor and inside a continuous enveloping measurement surface bounded by this floor. ISO 10494:2018 is applicable to steady-state operation and excludes transients such as start-up and shut-down, when the noise emission can be higher for short times. Under these conditions, this document does not apply.

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ISO 18888:2017 specifies standard rules for preparing, conducting, evaluating and reporting thermal performance tests on combined cycle and cogeneration power plants driven by gas turbines for base and part load operation with or without supplementary firing. ISO 18888:2017 is applicable to - thermal performance tests for general information, - thermal acceptance tests for determining the performance of the combined cycle plant in relation to a contractual guarantee, and - comparative tests designed to check the performance differentials of the combined cycle and cogeneration power plants, for testing before and after modifications, upgrades or overhauls. It can be used to determine the following thermal performance test goals and expected values, under specific operating and reference conditions within defined test boundaries: - electrical power output; - heat rate or thermal efficiency; - process steam and/or district heat w/o generation of electrical power output by means of a steam turbine. ISO 18888:2017 does not apply to individual equipment component testing, which is covered by corresponding standards. It is not intended to be applied to the following test goals: - environmental testing for example emissions, noise; - vibration testing; - operational testing; - absolute or comparative performance of specific components of the combined cycle covered by dedicated standards (e.g. gas turbines).

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ISO 20816-2:2017 is applicable to land-based gas turbines, steam turbines and generators (whether coupled with gas and/or steam turbines) with power outputs greater than 40 MW, fluid-film bearings and rated speeds of 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min. The criteria provided in ISO 20816-2:2017 can be applied to the vibration of the gas turbine, steam turbine and generator (including synchronizing clutches). ISO 20816-2:2017 establishes provisions for evaluating the severity of the following in-situ, broad-band vibration: a) structural vibration at all main bearing housings or pedestals measured radial (i.e. transverse) to the shaft axis; b) structural vibration at thrust bearing housings measured in the axial direction; c) vibration of rotating shafts radial (i.e. transverse) to the shaft axis at, or close to, the main bearings. These are in terms of the following: - vibration under normal steady-state operating conditions; - vibration during other (non-steady-state) conditions when transient changes are taking place, including run up or run down, initial loading and load changes; - changes in vibration which can occur during normal steady-state operation. ISO 20816-2:2017 is not applicable to the following: i) electromagnetic excited vibration with twice line frequency at the generator stator windings, core and housing; ii) aero-derivative gas turbines (including gas turbines with dynamic properties similar to those of aero-derivatives); NOTE ISO 3977‑3 defines aero-derivatives as aircraft propulsion gas generators adapted to drive mechanical, electrical or marine propulsion equipment. Large differences exist between heavy-duty and aero-derivative gas turbines, for example, in casing flexibility, bearing design, rotor-to-stator mass ratio and mounting structure. Different criteria, therefore, apply for these two turbine types. iii) steam turbines and/or generators with outputs less than or equal to 40 MW or with rated speeds other than 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min (although generators seldom fall into this latter category) (see ISO 7919‑3 and ISO 10816‑3); iv) gas turbines with outputs less than or equal to 40 MW or with rated speeds other than 1 500 r/min, 1 800 r/min, 3 000 r/min or 3 600 r/min (see ISO 7919‑3 or ISO 7919‑4 and ISO 10816‑3 or ISO 10816‑4); v) the evaluation of combustion vibration but does not preclude monitoring of combustion vibration.

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ISO 19859:2016 specifies the minimum technical and documentation requirements for the evaluation and procurement of gas turbine systems for electrical power generation. It applies to simple cycle and combined cycle gas turbines for both onshore and offshore applications, where applicable. It also applies to gas turbines used in cogeneration (see ISO 11086:1996, Annex B). Testing of the gas turbine in combination with a generator is included in the scope. It is not applicable to gas turbines used for all types of propulsion including aircraft, mobile barges, floating production vessels and marine propulsion applications and microturbines. ISO 19859:2016 defines the requirements for gas turbine power generation from an international perspective based on the content of existing, recognized ISO and IEC standards to the greatest extent practical. Nonetheless, it is recognized that within the industry other codes or standards are used, some of which are included in the text of this International Standard. The use of other such codes and standards is permissible provided an appropriate and acceptable level of requirements, functional design and safety is achieved and agreement has been reached for their use between the Purchaser and Contractor and such use is suitably documented. Consideration should be given to applying/using standards in the following hierarchical order: international; regional; national; local. ISO 19859:2016 identifies the requirements for both the Purchaser and Contractor attributable to the design and procurement of a gas turbine power generation package. The defined requirements apply to the scope of supply, except where excluded, encompassing the following equipment and the associated selected options, located within the power generation package, (see 3.14), listed below: - gas turbine package; - load shaft coupling and clutch, as applicable; - air inlet system; - exhaust system; - fuel equipment; - control equipment; - electrical equipment; - additional auxiliary systems, including starting, lubrication, barring, compressor wash, pipework, drains and vents; - fire and gas protection; - cooling water equipment. Where applicable to the integrity of the gas turbine package, the interface and applicable design requirements are included for equipment, utilities and supplies that interface with the power generation package. The following equipment is excluded from the scope of supply, but references are included where required for interface or performance measurement: - generator and auxiliary systems, except the module control option; - steam turbine and auxiliary systems; - equipment external to the power generation package. Data sheets in Annex A of this International Standard are provided for defining requirements and exchanging information between the Purchaser and the Contractor. The Purchaser fills in the data sheets for the tender and forwards them to the Contractor. The Contractor responds by completing the applicable data sheets for their tender. Annex A identifies the different types of data sheets and how they are to be used. Where the Contractor does not comply with a selected requirement of this International Standard, this is detailed as an exception, referencing the applicable clause and describing the deviation and any alternatives available in a document listing all the exceptions taken. Where the text in this International Standard requests procedures and operating, maintenance and commissioning manual information or equipment that would require the disclosure/supply of proprietary information/equipment which the Contractor is not prepared to release, such exceptions are listed. Where this situation exists, the Contractor will be prepared to release appropriate personnel and equipment to undertake all the tasks that otherwise would be undertaken by the Purchaser. A bullet ● at the beginning of a paragraph in the text of this International Standard indicates an optiona

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1.1   General
This European Standard applies to water-tube boilers with volumes in excess of two litres for the generation of steam and/or hot water at a maximum allowable pressure PS greater than 0,5 bar and with a temperature in excess of 110 °C as well as auxiliary installations (other plant equipment).
The purpose of this European Standard is to ensure that the necessary essential safety requirements according to Annex I of the Pressure Equipment Directive are fulfilled in order to guarantee the safety of water tube boilers.
This aim will be achieved by:
-   the proper application of the design, manufacturing, testing and inspection methods and techniques,
-   the provision of protective measures against hazards, which cannot be eliminated, and
-   the provision of information on residual hazards and other measures to reduce risk,
which are incorporated in the various parts of this European Standard.
The requirements of this European Standard take account of pressure-related hazards, which apply to water tube boilers, including failure of pressure-retaining components due to overheating.
This standard recognizes that it is not possible to cover all the combinations of situations that might arise.
1.2   Boiler assembly
For the purpose of this European Standard, the boiler assembly includes:
-   the water-tube boiler including all the pressure parts from the feedwater inlet (including the inlet valve) up to and including the steam and/or hot water outlet (including the outlet valve or, if there is no valve, the first circumferential weld or flange downsteam of the outlet header);
-   all superheaters, reheaters, economizers, that are not capable of isolation from the main system by interposing shut-off valves, associated safety accessories and interconnecting piping;
-   additionally, the piping that is connected to the boiler involved in services such as draining, venting, desuperheating, etc., up to and including the first isolating valve in the tubing line downstream of the boiler;
-   reheaters which are independently fired, and are separately provided with their safety accessories including all control and safety systems.
The following equipment and components can be integrated in the assembly at the discretion of the manufacturer:
-   isolatable superheaters, reheaters, economizers and related interconnecting piping;
-   the heat supply or firing system;
-   the means of preparing and feeding the fuel to the boiler including the control systems;
-   the means of providing the boiler with feedwater including the control system;
-   the pressure expansion vessels and tanks of hot water generating plant.
1.3   Other plant equipment
a)   The boiler supporting structural steelwork, the thermal insulation and/or brickwork and the casing;
b)   the means of providing the boiler with air including the forced draught fans and air pre-heaters which are heated by the gases of combustion;
c)   the facilities for moving flue gases through the boiler up to the stack inlet, including the induced draught fans and the air pollution reducing equipment located in the flue gas removal path;
d)   all other equipment necessary for the operation of the boiler plant.
1.4   Exclusions
This European Standard does not apply to the following types of boiler plant:
a)   boilers other than stationary boilers;
b)   shell type boilers;
c)   electrical boilers;
d)   nuclear primary circuits, the failure of which can cause an emission of radioactivity.

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ISO 19372:2015 covers the safety requirements for industrial, commercial, and residential automated stationary microturbine (micro gas turbine) engine generator assemblies with an individual system or subsystem output rating with nominal supply voltages not exceeding 1 000 V for alternating current (A.C.) and not exceeding 1 500 V for direct current (D.C.), 500 kW per individual unit/subsystem or less that are intended for installation and use in ordinary and hazardous location using liquid or gaseous fuels and the safety related control and detection systems and essential auxiliaries for all types of open cycles, closed-cycle, and semi-closed (simple, combined, regenerative, reheat, etc.) used in onshore and offshore applications including floating production platforms.

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This part of this European Standard specifies the organisation and content of operating instructions for watertube boilers and auxiliary installations as defined in EN 12952-1 when placed on the market. To what extent the following aspects are used for the establishment of an operating instruction depends on the stipulated scope of delivery and of the requirements by contract regarding plant operation and maintenance.

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This part of this European Standard specifies the organisation and content of operating instructions for water-tube boilers and auxiliary installations as defined in EN 12952-1 when placed on the market.
To what extent the following aspects are used for the establishment of an operating instruction depends on the stipulated scope of delivery and of the requirements by contract regarding plant operation and maintenance.
NOTE   The manufacturer’s scope of supply may be either pressure equipment, or pressure equipment and “auxiliary” plant such as motors, pumps and fans.

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This part of this European Standard specifies the essential requirements for equipment and protective devices for water-tube boiler plant as defined in EN 12952-1, to ensure the boiler operates safely within the allowable limits (pressure, temperature, etc.).
NOTE 1   Additional requirements specially needed for boilers without manual intervention are specified in Clause 7.
NOTE 2   Requirements for equipment for chemical recovery boilers are given in Annex A.

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IEC 60669-2-6:2012 is applicable to fireman's switches used for the breaking of the low-voltage circuits for exterior and interior signs and luminaires e.g. neon signs for a.c. only with a rated voltage not exceeding 440 V and a rated current not exceeding 125 A.
This publication is to be read in conjunction with IEC 60669-1:1998.

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This European Standard specifies the requirements for the design and calculation of water-tube boilers as defined in EN 12952-1.
The purpose of this European Standard is to ensure that the hazards associated with water-tube boilers are reduced to a minimum by the proper application of the design according to this part of EN 12952.

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This European Standard specifies requirements for the workmanship and construction of water-tube boilers as defined in EN 12952-1:2001.

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This European Standard specifies the requirements for the product forms for use in pressure parts of water-tube boilers and for parts welded on to pressure parts:
-   plates;
-   wrought seamless tubes;
-   electrically welded tubes;
-   submerged, plasma and TIG arc-welded tubes;
-   forgings;
-   castings;
-   rolled bars;
-   welding consumables;
-   fasteners;
-   seamless composite tubes.

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This European Standard specifies requirements for the inspection during construction, documentation and marking of water-tube boilers as defined in EN 12952 1.

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This European Standard is applicable to water-tube boilers as defined in EN 12952-1:2001.
This European Standard specifies procedures for calculating the creep and/or the fatigue damage of boiler components during operation. These calculations are not required to be carried out by the manufacturer as part of his responsibilities within this European Standard.

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IEC/TS 61994-3:2011(E) specifies the terms and definitions for piezoelectric dielectric oscillators representing the state-of-the-art, which are intended for use in the standards and documents of IEC TC 49.

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ISO 26382:2010 describes the technical declarations for a cogeneration system (CGS) that simultaneously supplies electric power and heating and/or cooling, for planning, evaluation and procurement. It applies to the identification of investigation items for project evaluation, CGS evaluation, and primary information works for CGS procurement. It also specifies necessary check items in CGS planning, provides a procedure to obtain the satisfactory configuration of the CGS for each project, and includes a detailed process diagram of the key development steps.

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This International Standard applies to open-cycle gas-turbine power plants using combustion systems supplied with gaseous and/or liquid fuels as well as closed-cycle and semi-closed-cycle gas-turbine power plants. It can also be applied to gas turbines in combined cycle power plants or in connection with other heat-recovery systems. In cases of gas turbines using free-piston gas generators or special heat sources (for example synthetic gas of chemical processes, blast furnace gas), this International Standard can be used as a basis but suitable modifications are necessary. Acceptance tests of gas turbines with emission control and/or power augmentation devices that are based on fluid injection and/or inlet air treatment are also covered by this International Standard and it is necessary that they be considered in the test procedure, provided that such systems are included in the contractual scope of the supply subject to testing. This International Standard does not apply to emission testing, noise testing, vibration testing, performance of specific components of the gas turbine, performance of power augmentation devices and auxiliary systems, such as air inlet cooling devices, fuel gas compressors, etc., conduct test work aiming at development and research, adequacy of essential protective devices, performance of the governing system and protective systems, and operating characteristics (starting characteristics, reliability testing, etc.).

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ISO 21789:2009 covers the safety requirements for gas turbine applications using liquid or gaseous fuels and the safety-related control and detection systems and essential auxiliaries for all types of open cycles (simple, combined, regenerative, reheat, etc.) used in onshore and offshore applications including floating production platforms. It applies to driven machinery only where an integral part of the gas turbine (e.g. a gearbox integral to the gas turbine) or located within the gas turbine enclosure and forming part of the enclosure hazardous area classification (e.g. a generator within the gas turbine enclosure), or where the driven machinery has a direct effect on the operational safety of the gas turbine. It details the anticipated significant hazards associated with gas turbines and specifies the appropriate preventative measures and processes for reduction or elimination of these hazards. It addresses the risks of injury or death to humans and risks to the environment. Equipment damage without risk to humans or the environment is not covered. It excludes gas turbines used primarily for direct and indirect propulsion, special heat source applications and in research and development programmes. It also excludes gas turbines for closed-cycle and semi-closed cycle applications, and compressed-air energy storage plants. Where appropriate, it can be used to give general guidance in such applications. It is not applicable to machinery or safety components that were manufactured before the date of its publication.

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This part of IEC 60034 applies to three-phase synchronous generators, having rated outputs of 10 MVA and above driven by steam turbines or combustion gas turbines. It supplements the basic requirements for rotating machines given in IEC 60034-1. Common requirements are prescribed together with specific requirements for air, for hydrogen or for liquid cooled synchronous generators. This part of IEC 60034 also gives the precautions to be taken when using hydrogen cooled generators including: - rotating exciters driven by synchronous generators; - auxiliary equipment needed for operating the generators; - parts of the building where hydrogen might accumulate.

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This European Standard specifies requirements for limiters (or limiting devices) which are incorporated into safety systems for water-tube boilers as defined in EN 12952-1.
A limiter (or limiting device) can be either:
-   a safety accessory as defined in the Pressure Equipment Directive, Article 1, clause 2.1.3, and needs to include the safety logic and final actuator, or
-   one element of a safety system, for example, a self-monitoring water level sensor used as part of a safety accessory as defined in the Pressure Equipment Directive, Article 1, clause 2.1.3. The overall boiler protection function shall be provided in association with additional safety logic (where appropriate) and a final actuator.
The design requirements and examination of functional capability for the limiters are covered in this European Standard.
For an explanation of the extent of the limiter (or limiting device) see Figure A.1.

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IEC 60045-1:2020 is applicable primarily to land-based horizontal steam turbines driving generators for electrical power services. Some of its provisions are relevant to turbines for other applications. Generator, gear box and other auxiliaries which are considered as a part of the system are also mentioned in this document. Detailed specifications for this equipment are not included in this document. The purpose of this document is to make an intending purchaser aware of options and alternatives which it may wish to consider, and to enable it to state its technical requirements clearly to potential suppliers. Consequently, final technical requirements will be in accordance with an agreement between the purchaser and the supplier in the contract. This second edition cancels and replaces the first edition published in 1991. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) Scope clarification and boundaries of applicability; b) general update to state-of-the-art technology; c) integration of product safety: Clause 5; d) integration of automation, incorporating the former annex on electronic governors: Clause 11; e) Informative Annex A on welding added.

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ISO 19860:2005 applies to data-acquisition and trend-monitoring systems for gas turbine installations and associated systems. ISO 19860:2005 classifies and defines monitoring systems and their technical terms and establishes a system for conversion and validation of measured quantities in order to enable a comparison of the various systems, their features and their performances.

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ISO 3977-3:2004 covers the design requirements for the procurement of all applications of gas turbines and gas turbine systems, including gas turbines for combined cycle systems and their auxiliaries, by a purchaser from a packager. It also provides assistance and technical information to be used in the procurement. It is not intended to deal with local or national legislative requirements with which the installation may be required to conform. ISO 3977-3:2004 is applicable to simple-cycle, combined-cycle and regenerative-cycle gas turbines working in open systems. It is not applicable to gas turbines used to propel aircraft, road construction and earth moving machines, agricultural and industrial types of tractors and road vehicles. In cases of gas turbines using special heat sources (for example, chemical process, nuclear reactors, furnace for a super-charged boiler), ISO 3977-3:2004 provides a basis.

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This draft European Standard covers the safety requirements regarding the storage and use of:
-   liquefied pressurized ammonia for steam boiler plants;
-   liquid ammonia water solution for the reduction of NOx in the flue gas from boiler plants.
Annex A summarizes the operational aspects.

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VA/ISO removed because project deleted at ISO level (CC/020415) ++ Re-registered in VA/ISO further to re-activation of the project at ISO level (NT/020930).

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This European Standard applies to the design of equipment for boiler plants to reduce air pollutants in the flue gases.
NOTE   The effects of explosion are not considered in this Part of the is European Standard.

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This European Standard covers direct-fired steam and hot water generators, including the auxiliaries. For the purposes of this standard, steam and hot water generators are vessels and pipework systems in which:
¾ steam at a pressure higher than atmospheric pressure is generated for use external to the system;
¾ water is heated to a temperature higher than the saturation temperature at atmospheric pressure for use external to the system.
A steam generator normally consists of the flue gas-heated evaporator, the superheater, the reheater, the feedwater heater, the air heater, the fuel heater, if any, and the fuel burning equipment.
The term 'direct-fired' relates to equipment by means of which the chemical heat in the fuel of known composition is converted to sensible heat. Such equipment can involve stoker firing, fluidized-bed combustion or burner systems.
The auxiliaries include the fuel feeders, the pulverizer, the FD (forced draught) fan, the ID (induced draught) fan, the facilities for removal of the refuse (combustion residues), the steam air heater, the main air heater, the fuel heater, if any, and the dust collector.

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This Part of this European Standard applies to all water-tube boilers as defined in EN 12952-1 which are heated by combustion of one or more fuels or by hot gases for the generation of steam and/or hot water.
This Part of this European Standard applies to those components between the feedwater inlet and the steam outlet of the steam generator. The quality of the steam produced is outside the scope of this standard.
This Part of this European Standard aims to ensure that the boiler is able to be operated to minimize risk to personnel, the boiler and associated plant components located near it.
NOTE   This European Standard does not aim to achieve optimum economic operation. For certain purposes, it will be more appropriate to optimize the chemical characteristics in order to:
- increase the thermal efficiency;
- increase the availability and reliability of the plant;
- increase steam purity;
- reduce the maintenance costs - repair, chemical cleaning, etc.
This Part of this European Standard sets out minimum requirements for the specific types of water to reduce the risk of corrosion, sludge precipitation or formation of deposits which may lead to any damage or other operating problems.
NOTE   This Part of this European Standard has been prepared on the assumption that the user of this European Standard possesses a sufficient knowledge of the construction and operation of the boiler as well as an adequate appreciation of water and steam chemistry.

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ISO 10437:2003 specifies requirements and gives recommendations for the design, materials, fabrication, inspection, testing and preparation for shipment of special-purpose steam turbines. It also covers the related lube-oil systems, instrumentation, control systems and auxiliary equipment. It is not applicable to general-purpose steam turbines, which are covered in ISO 10436.

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ISO 10437:2003 specifies requirements and gives recommendations for the design, materials, fabrication, inspection, testing and preparation for shipment of special-purpose steam turbines. It also covers the related lube-oil systems, instrumentation, control systems and auxiliary equipment. It is not applicable to general-purpose steam turbines, which are covered in ISO 10436.

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This European Standard applies to the design of equipment for boiler plants to reduce air pollutants in the flue gases.
NOTE   The effects of explosion are not considered in this Part of the is European Standard.

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1.1 Firing systems: These requirements apply to pulverized fuel firing systems of steam and hot water generators (boilers) and commence at the filling equipment for the boiler bunkers or for the pulverized fuel storage system and end at the ash extraction plant. For multifuel firing systems using separate or combined burners these requirements shall apply to the pulverized fuel firing part involved. For other fuels or firing systems used in combination other requirements shall apply e.g. prEN 12952-8.

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These requirements apply to atmosperic fluidized-bed and grate firing systems. This system commence at the fuel bunkers and at the ash extractions plant. For combination of various firing systems, the individual requirements of each system shall also apply, especially those included in prEN 12952-8 and prEN 12952-9. If several fuels are burnt simultaneously or if a fuel quality varies considerably (e.g. moisture content), additional safety measures may be necessary, especially with respect to limitation of the fuel flow into the firing system and ensuring proper air supply to the individual fuels.

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This Technical report gives guidance for the involvement of an inspection body independent of the manufacturer of shell boilers as defined in EN 12952 1.

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This European Standard specifies the requirements for safeguards against excessive pressure in water-tube boilers as defined in prEN 12952-1.

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EN following parallel vote

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This standard gives guidance on writing the technical specification for the procurement of coal handling and bulk storage plant, associated with steam generating plant in the electrical power supply industry. This includes: wagon unloaders or wagon tipplers; barges or ship unloaders; coal stackers and coal reclaimers (bucket wheels, scrapers) of the coal yard; hoppers; silos for coal mixing, buffer silos, bunkers (boiler house silos); transfer towers between belt conveyors; belt conveyors, bucket elevators; metal structures (towers, conveyor tunnels)...

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This part of ISO 3977 states the principles for systems and procedures to assure the integrity of a packager's product and services. It gives guidance on the inspection, testing, installation and commissioning required for the package and packaged equipment. It outlines the responsibilities between the purchaser and packager for inspection, coordination, reporting and recording.

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This part of ISO 3977 provides guidelines for procurement of gas turbines with consideration of the fuel quality and of the environmental performance. Guidance is given to both the packager and purchaser on what information should be provided with regard to the fuel used by a gas turbine, and with regard to the type of information necessary to quantify the expected environmental impact. Fuel specifications are referenced but not provided.

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1. Firing systems: These requirements apply to oil and gas firing systems of steam and hot water generators. For multifuel firing systems using separate or combined burners these requirements shall apply to the oil and/or gas firing part involved. Where several fuels are burnt simultaneously, improved safety measures may be necessary, especially in respect to limitation of heat input into the firing system and proper air supply to the individual fuels. 2. Fuels (...) 3. Operation (...)

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This Technical report gives guidance for the involvement of an inspection body independent of the manufacturer of shell boilers as defined in EN 12952 1.

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This part of EN 60953, also called retrofit code (RC), establishes a supplementary retrofit code for thermal verification tests of retrofitted steam turbines.

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