Bsi bs en 45510 6 4 2000 scan

6 EN 45510-6-4:1999 1 Scope This Guide covers: - feedwater pumps including the start-up and booster pumps; - condensate pumps and condensate booster pumps; condenser cooling water pumps

Guide for procurement

equiplllent

The European Standard EN 45510-64:1999 has the status of a

British Standard

lCS 2:lQ80; 27.040; 27.100

NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGIIT LAW

EN 45510-64:2000

This British Standard, having

been prepared under the

direction of the Rm!ln",,'l'irl!1

Sector Committee, was nnhH",h,'n

under the authority of

Standards Committee and comes

into effect on 15 January 2000

© BSI 01-2000

ISBN 0580 35361 3

National foreword

This British Standard is the English language version of EN 45510-6-4:1999

The UK participation in its pn~paration was entrusted to Technical Committee Power committee, which has the responsibility to:

aid enquirers to understand the text;

- present to the roc,nnn,,,hl,,, European committee any on the interpretation, or for change, and the UK interests infonned; monitor related international and European

"Find" facility of the BSI Standards Electronic V<:!""""'Jl5ue

A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards alre responsible for their correct application

Compliance with a British Standard does not of itself confer u

from legal "' uK u "

Summary of pages

This document a front cover, an inside front cover, the EN title page,

pages 2 to an inside back cover and a back cover

The BSI notice displayed in this document indicates when the document was last

Amendments issued since I" "' "UJ'

NORME EUROPEENNE

ICS

English version

ide for procurement power station equipment - Part 6-4:

Turbine auxiliaries - Pumps

Guide pour I'acquisitlon d'equipements destines €lUX

centrales de production d'electricite - Partie 6-4: Auxiliaires

de turbine - Pompes

Leitfaden fOr die H",~~,.,n:~n!l

Kraflwerke - Teil6-4:

This European Standard was approved by CEN/CENELEC on 1 October 1999,

CEN/CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the condftions for giving this European Standard the status of a national standard without any alteration, Up-to-date lists and bibliographical references corc:erning slJch

national standards may be obtained on application to the Central secretariat or to any CEN/CENELEC member

This European Standard exists in three official versions (English, French, German), A version in any other language made by tra1slation under the responsibility of a CENICENELEC member into its own language and notified to the Central Secretariat has the same stctus as the official versions

CEN/CENELEC members are the national standards bodies and national eleclrotechnical committees res,pelctivell/

Czech Republic, Denmark, Finland, France Greece, Iceland Ireland, Italy, luxembourg, Neitheliarlds,

Sweden Switzerland and United Kingdom,

CEN Central Secretariat:

rue de Stassart, 36 13·1050 Brussels

CENELEC Central Secretariat:

rue de Stassart, 35 13.1050 Brussels

Ref No EN 45510-64:1999 E

17.3 installation and commissioning

17.4 Technical conditions for trial run

17.5 Functional and performance tests

4

EN 45510-6-4:1999

Foreword

nrri,,.,,,,,nr,rr the Secretariat of which is held by BSI

text or by ""nI1n,.'~""n~""1"1 at the latest by April 2000, and conflicting national

the latest by April 2000

Joint Task Force

puJ~licat;c)n of an identical shall be withdrawn at

ACCOIr1Ir1!O to the CENICENELEC Internal Regulations, the national standards the (ollowing

,:,wem,m Switzerland and the United Kingdom

,ro,,,,}!,,,," Commission and the European Free Trade Association

Electrical equipment - Power transformers

Electrical equipment - Uninterruptible power supplies

Electrical equipment - Stationary batteries and ohargers

Electrical equipment - High power static converters

Electrical equipment - Motors

Electrical equipment - Generators

Electrical equipment - Switchgear and control gear

Electrical equipment - Power cables

Electrical equipment - Cabling systems

Parl4-3: Boiler auxiliaries - Draught plant

Part 4-10: Boiler auxiliaries - Flue gas denitrification (De-NOJ plant

©BSI01-2000

Part 6~9: Turbine auxiliaries - Cooling water

eqllJllllmEmr ",,.,~,, jf,,," nature for use in the of power station plants EN 45510 is the responsibility

In this words and sentences not in italics are specific to this Guide and refer to the particular eqUipment covered

6

EN 45510-6-4:1999

1 Scope

This Guide covers:

- feedwater pumps (including the start-up and booster pumps);

- condensate pumps and condensate booster pumps;

condenser cooling water pumps;

boiler recirculation pumps;

heater drains pumps;

water recirculation pumps of the different systems: T<>"""A.,<:>,,>r ",llnr<.nc tank, exhaust gas coolers etc

service water pumps;

flue gas desulphurization (DeSOx) plant and ash pumps

For small-sized pumps and/or those whose failure does not significantly effect electricity generation, the purchaser should only apply this guide with caution and limit its In this case this guide notably allows the use of "standardized" pumps The purchaser then benefits from the advantages of series production, reduced procurement times wider ranging experience and lower costs However, the purchaser's attention is drawn to the necessity to check the adequacy of the chosen pump against the functional and installation requirements

This Guide also covers:

- all the services which enable a complete installation of a pump unit

This Guide does not cover the drive machine itself (turbine, electrical motor combustion

deSCription of the equipment to be ;:'UjJIJII'CI'U

This Guide indicates to DOlrenTlBI DUIrCIliBS,9YS how their specification should be n""nAJr~("I so that:

strategy It does not cover:

- any allocation which are detennined by the contract

NOTE: As a comprehensive European environmental policy is still under preparation, this Guide does not address the environmental implications of the equipment

2 Normative references

This Guide for procurement incorporates by dated or undated reference, provisions from other publications, These normative references are cited in the appropriate places in the text and the publications are listed hereafter For dated references, subsequent amendments to or revisions of any of these publications apply

edition of the publication refeffed to applies

Determination of permissible residual unbalance

Mechanical vibration of large rotating machines with speed range from

10 to 200 rev/s - Measurement and evaluation of vibration severity in situ

Mechanical vibration of rotating and reciprocating machinery - Requirements for instruments for measuring vibration severity

Acollstics - Determination of sound power levels of noise sources - Guidelines for the lise of basic standards and for the preparation of noise test codes

For the purposes of this Guide, the following definitions apply:

3.1 Organizational terms

enquiry issued by a purchaser

together with the necessary contractual and commercial conditions

enquiry

together with so much of the area surrounding as the supplier may, with the consent of the purchaser, use for the purposes of the contract

conformity: Fulfilment of specified requirements by a product, process or service

equipment

operated for a sufficient time to have demonstrated performance and availability

4 Brief overall nrCJlI'l!.':r description

4.1 Role and organization of purchaser

The enquiry should define the purchaser'S role in the project, including whether the purchaser will assume

4.2 Site location

The specification should describe the geographical location of the site which may include surveying points,

rilAJ"lnJrlrl restrictions

between suppliers of connected equipment

Where appropriate, the specification should define the permitted ground loading, dimensional and time

The specification should identify, where appropriate, the environment of the site in which the equipment will operate The following factors may normally be included

- climatic e.g atmospheric pressure, annual variation of air and cooling water temperature, relative

ae~Olo,O/c,al e.g seismic conditions and characteristics of subsoil (e.g caverns, gliding stratifications,

- geographic e.g elevation, influence of local topography and

- hydrological e.g flooding and tides

4.3 Equipment

f'lt:>11t:>r.'1Tlnlf'l plant, or equipment

satisfactory operation

4.4 Equipment to be purchased

purchaser may specify:

H the pump type (either axial mixed or centrifugal pump, horizontal or vertical shaft);

- the number of pumps (for any particular application);

- the type of drive

compatibility with """cmr.f'I

dimensions, shape or colour) to meet local planning requirements or specific criteria, where such requirements exist

NOTE: Attention is drawn to European, national and/or local legislation which may place restrictions in this area

4.5 Control and instrumentation

level of operator intervention allowed or required, integration with other control systems, localized control commonality and redundancy

NOTE: Guidance on the procurement of control and instrumentation

including advice on interfaces can be found in EN 45510-8-1

4.6 Electrical supplies other services

for power

aCI')e~)raJt)le values of maximum load (kW) and short circuit level at each level and the harmonic

or international standard

The specification should define the type and capacity of other services for the nn.>r"'I' n of the equipment such as compressed air or auxiliary service water

out This may include the principal dates associated with tendering, placement of orders, access tosite, start and completion of installation, commissioning, take-over and final acceptance

4.9 Equipment identification systems

The specification may specify the equipment identification system for use during the operating life of the

5 Extent of supply

The specification should define the extent of supply of all the equipment

This may include:

- main pump, booster pump, drive machine (turbine or motor), speed increaser, speed reducer, hydraulic coupling, etc.;

- structural steelwork supporting the drive machine, structural steelwork supporting the pumps, base plates, anchors, fixing bolts, couplings, block supporting the pump unit assembly, minimum-flow protection device, shaft sealing system, heating and/or temperature maintaining device, lubrication system, purification system;

- monitoring and control sensors, instrumentation tappings for the tests (thermowells for temperature measurements, bosses and connections for pressure measurements, etc.), local instrument panels grouping the measuring instruments, connecting pipes (inlet outlet connection between booster pump and main pump, minimum-flow recirculation, cooling, lubrication, etc.), pipes and associated valves on the connecting nozzles (isolation, drain, vent, hydraulic balancing, etc.), filters, priming system, thermal insulation, safety covers, access walkways, painting, soundproofing devices, special tools for maintenance, handling rigs (used during initial installation and/or maintenance);

©BSI01-2000

spare

site activities:

impellers, mechanical seals, bearings, wear rings, gaskets etc.;

- transport, off-loading, storage installation and commissioning;

."">to,,,, performance tests:

documentation: - equipment description, operation and maintenance manuals

supply contract, the specification may require the supplier to provide information on all the necessary

addition provision may need to be made in the contract to ensure the availability of information necessary to

cooperation between the purchilser and supplier Alternatively the specificiltion may define the technical

from the equipment supply contract, the specificiltion may require the supplier to provide information on all the necessary interfaces (electrical loads, shaft heights, motor speeds and direction of rotation, terminal

provided by the supplier and the programme for its delivery Similar provision may be made for other

services, etc

storage and installation Subsequent to final manufacture all equipment items should be protected against deterioration due to corrosion

The specificiltion should define the main process input and output terminal points such that the function

II Jlf'prr;IPnrJC>: of the purchaser

It may be necessary for design and analytical work to extend beyond the physical terminal points

Page 12

EN 45510-6-4:1999

7 Operational requirements

7.1 Operating environment

The specification should describe the operating environment in which the equipment will be required to

electromagnetic environment (this may include both emission and immunity requirements) should be

be stated

- restrictions e,g process waste disposal

The following are generally classified as normal "'\r"'U~I'If'\1'I

- start-ups and shut-downs performed in accordance with the supplier procedures;

- operation within the f1owrate, rotational suction head and fluid ''''1'\'\1'1'''1".:111 produced by normal plant load variations

The specification should provide the following information:

"'rr"' ''1'''' ,,,' and operation of minimum flow .,\le,t,:: ,,·

· total ,n";!:"",,rr' head to be supplied by the pump if available, the <:v,~t""m resistance CUNe;

- operating range for Single/parallel operation;

valve relief pressures, when applicable;

- operation mode against a closed valve

NOTE: The rotational speed may be Sm~ClTlea or may be chosen by the supplier

For for feedwater pumps, the following are generally defined:

- nominal mode: 100% boiled load '"~r'''1~1''''''' at nominal steam

· maximum continuous n ,,~ "'l"nn mode: for instance 105% boiler load

conditions;

at nominal steam

- maximum exceptional operating mode: usually a combination of a maximum flowrate and a maximum pressure

It is often more efficient to define the pump range by one For pumps whose capacity is

on the power supplied the plant, this might be the plant load For the condenser cooling water

©BSI 01-2000

the auxiliary cooling pumps, the boiler recirculation pumps, etc the specification should define the normal operating range from minimum flow to maximum flow with allowances for resistance and NPSH variations

The may define transient modes by for example the curves showing the variation with time of the major Examples are:

- condenser cooling water (for piping not equipped with a non-return valve):

with lines: all characteristics of the suction and lines;

· trip-activation (loss of voltage): maximum loss of voltage duration

In addition all modes and duration of operation of the equipment during should be , ,f1"" e.g the use of feedwater pumps for boiler blowdown, flushing, pressure tests, etc

NOTE: The specification may also include requirements such as a maximum closed-valve head in order to limit the pressure of the discharge line The purchaser, however, should note that constraints on the pump characteristic curve may oblige the supplier to offer a pump far from the optimum design Special requirements should not compromise the ability of the pump to meet the normal operational requirements

7.4 Operating hours

hours) and the required operating period of the equipment

The specification should identify the operating modes of the plant This may take the form of a tabulation of, for example, periods of 105% operation, 100% operation, part load operation

For abnormal conditions, the following should generally be defined:

- the maximum continuous duration of each mode;

- the average normal duration;

- if necessary, the number of unusual disruptions

For accidental operating conditions, the following should generally be defined:

- the number of annual disruptions;

- the maximum duration of each disruption

7.5 Start·up and shut·down

The specification should state the minimum required number and type of start-up and shut-down cycles of the equipment

The specification should define the

are provided

7.6 Abnormal conditions

vr.".",,,,,., changeover strategy where standby equipment or bypasses

components/materials

©BSI01-20oo

Abnormal conditions may include:

load rejection;

power supplies outside normal conditions 4.6);

loss of a pump and automatic fast start-up of the standby pump;

- in run out operation (for example during non availability of parallel pump);

- feedwater pump operation at full capacity with the steam non"""",,, r at maximum pressure;

operation outside allowable cavitation limits;

operation outside specified f1owra1e range

In abnormal conditions, it is acceptable to have stress levels higher than in normal operation and faster equipment wear These conditions do not lead to equipment or immediate corrective maintenance

7.7 Further operational requirements

The should provide information on the accidental operating conditions to which the equipment may be subjected

Accidental operating conditions may include:

- overspeed operation;

- start-up with empty or partially

for example condenser cooling water pumps,

for pumps designed for this type of start-up: water pumps;

- very low flow operation (typically in the case

- very high flow operation (typically in the case of

the minimum-flow line to open);

1"I~.I"I.r\1'1 of a bypass line);

- operation with insufficient cooling (typical for boiler recirculation pumps)

Accidental operating conditions may call for equipment Insoec::tlo:n

to loss of integrity of the pressure containment

Under no circumstances must they lead

NOTE: The specification should describe how the accidental operating conditions will be detected and the subsequent actions of the automatic control system or the operator

takes into account the anticipated

to the stated operating hours

- journal h""::lIrirl(H/ or tilting

- first stage impeller(s)

The specification should include an estimate of the number of cycles to which the equipment will be subjected

SD~9Ci:ficciticln may proposals for monitoring the rla'l'l!Ol"nlT:'" life of components which are subject

Components requiring "", ,, maintenance

specification should request the supplier to provide a schedule of components which

planned maintenance shut-downs

For example, the supplier should state the following limits of some main parameters after which maintenance operations are required:

- critical internal and bearing clearances which affect performance and dynamic stability;

- range of acceptable rotor

- maximum and minimum levels of consumables and the estimated period between 'UU-UU""L

9 Performance requirements

9.1

conditions

9.2 Performance

9.2.1

The standard performance parameters are:

- nominal flowrate:

· total dynamic head (minimum and ma)(imum value);

Affi iAlnl"V (minimum value);

· required NPSH (maximal value);

- all normal modes:

· the noise emitted by the eqUipment;

· the vibrations of the bearings and of the

<DBSI 01-2000

if appropriate