CN104464848A - Method for installing steam generator in nuclear island of nuclear power station - Google Patents

Method for installing steam generator in nuclear island of nuclear power station Download PDF

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Publication number
CN104464848A
CN104464848A CN201410581971.XA CN201410581971A CN104464848A CN 104464848 A CN104464848 A CN 104464848A CN 201410581971 A CN201410581971 A CN 201410581971A CN 104464848 A CN104464848 A CN 104464848A
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China
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steam generator
point
measurement
survey station
coordinate
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CN201410581971.XA
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CN104464848B (en
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张永胜
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China Nuclear Industry 23 Construction Co Ltd
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China Nuclear Industry 23 Construction Co Ltd
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Priority to CN201410581971.XA priority Critical patent/CN104464848B/en
Priority claimed from CN201210002478.9A external-priority patent/CN102592692B/en
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    • GPHYSICS
    • G21NUCLEAR PHYSICS; NUCLEAR ENGINEERING
    • G21DNUCLEAR POWER PLANT
    • G21D1/00Details of nuclear power plant
    • G21D1/02Arrangements of auxiliary equipment
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E30/00Energy generation of nuclear origin

Abstract

The invention relates to a method or installing a steam generator in a nuclear island for a nuclear power station, which aims to solve the problems that when the steam generator in the nuclear island for a nuclear power station is installed, the hoisting time is long, and the installation cost is high. The method for installing the steam generator in the nuclear island for the nuclear power station, which is disclosed by the invention, comprises the following steps: putting a to-be-installed steam generator on a support device, and dismounting a protection device on a support of a to-be-installed steam generator body; then setting a measurement point on the to-be-installed steam generator body; then setting a station measurement point at the part close to the bottom of the to-be-installed steam generator so as to put a measurement device; putting a reference meter below the bottom of the to-be-installed steam generator, measuring the reference meter, the measurement point and the station measurement point by utilizing a measurement device, and recording data; processing the measured data by utilizing an industrial measurement system, and calculating the thickness of a cushion plate; and manufacturing the cushion plate and hoisting the to-be-installed steam generator, so that the steam generator can be installed by once installation, and the installation cost is lowered.

Description

The method of steam generator in nuclear island of nuclear power plant is installed
Patented claim of the present invention is the applying date is on January 6th, 2012, and application number is 201210002478.9, and denomination of invention is the divisional application of the application for a patent for invention of the method for installing steam generator in nuclear island of nuclear power plant.
Technical field
The present invention relates to the method that in nuclear power station, Nuclear island equipment is installed, particularly relate to the method for installing steam generator in nuclear island of nuclear power plant.
Background technology
When installing the steam generator in nuclear island of nuclear power station, steam generator need be installed to predetermined height so that steam generator coordinates with other equipment in nuclear island near the heat pipe mouth at bottom place.
In the prior art, normally first the supporting leg in order to install steam generator is installed.Then by hanging apparatus, steam generator is lifted into the top of supporting leg, and it is corresponding with the position of supporting leg that the body on steam generator body is supported, the hoisting height of adjustment steam generator, is located at predetermined altitude.Measure the vertical distance between supporting surface that the top of supporting leg and body support again, and make backing plate with the thickness that this vertical distance is backing plate.Again backing plate is placed on the top of supporting leg, and the support of the body of steam generator is pressed against on backing plate, completes the installation of steam generator.When making backing plate, steam generator can be hung out, after backing plate completes, then steam generator being lifted into the top of supporting leg, installing; Also can utilize hanging apparatus that steam generator is hung in the top of supporting leg until backing plate completes always, then install.These two kinds of installation methods, or need steam generator to sling for a long time, or need repeatedly to lift steam generator, the lifting time is long, and the manpower and materials of input are many, and installation cost is high.
Summary of the invention
During for solving in prior art the steam generator installed in nuclear island of nuclear power station, the lifting time is long, and the problem that installation cost is high, the present invention proposes a kind of method of installing steam generator in nuclear island of nuclear power plant, and this installation method comprises the steps:
The first step, is placed on steam generator to be installed on bracing or strutting arrangement or storage facility, and the protective device supported by the body of described steam generator to be installed removes;
Second step, the body of described steam generator to be installed arranges measurement point: on the surface of described steam generator to be installed, choose at least two circumference, and at regular intervals between these two circumference, and described circumferentially choose at least three measurement points do not overlapped in case obtain described circumference central coordinate of circle and and then draw the longitudinal axis center line of described steam generator to be installed; At least three measurement points do not overlapped circumferentially are chosen to draw the port center coordinate of described heat pipe mouth in the port of the heat pipe mouth of described steam generator to be installed; The supporting surface that described body supports chooses at least one measurement point to obtain the vertical range between described supporting surface and described port center;
3rd step, is arranging survey station point to lay measurement mechanism near the bottom place of described steam generator to be installed, and described measurement mechanism can be observed same measurement point at least two different survey station points;
4th step, places the below of bottom of described steam generator to be installed by the station meter of industrial measuring system, and described measurement mechanism can observe this station meter at least two different survey station points;
5th step, described measurement mechanism is placed in successively on different survey station points, the measurement point that can observe described station meter and described measurement mechanism with described measurement mechanism and survey station point are observed, and the horizontal angle angle value of station meter, measurement point and the survey station point observed according to the survey station point different grouping record at described measurement mechanism place and vertical angle angle value;
6th step, first optimum configurations is carried out to described industrial measuring system, again measured data are imported in described industrial measuring system by group, and overall adjustment calculation process is carried out to the data recorded, generate the three-dimensional coordinate of described measurement point under the coordinate system being true origin with the first survey station point, this first survey station point is the survey station point that described measurement mechanism records first group of place when importing in described industrial measuring system data;
Set up new three-dimensional system of coordinate, and this three-dimensional system of coordinate with the longitudinal axis center line of described steam generator to be installed for Z axis, with the port center of described heat pipe mouth to the straight line at the vertical line segment place of the longitudinal axis center line of described steam generator to be installed for X-axis;
Coordinate conversion is carried out to the three-dimensional coordinate of described measurement point, to obtain the coordinate of described measurement point under described new three-dimensional system of coordinate, and then the vertical range h obtained between described supporting surface and described port center, then the thickness t of described backing plate is drawn according to formulae discovery:
t=h+H 1-H 2
Wherein, t is the thickness of backing plate, and h is the vertical range between the supporting surface of body support and the port center of heat pipe mouth, H 1for the predetermined setting height(from bottom) of the port center of the heat pipe mouth of steam generator to be installed, H 2for the height of supporting leg;
7th step, makes described backing plate, and before described steam generator installation in position to be installed, described backing plate has been positioned on described supporting leg; Then described steam generator installation in position to be installed is made.
Like this, those skilled in the art is when installing steam generator, the thickness of backing plate only need can be drawn by carrying out measurements and calculations, and then only need once lift the installation that can complete steam generator, decrease time or the lifting number of times of lifting steam generator, decrease to install and drop into, reduce installation cost.
Preferably, described industrial measuring system is SMN industrial measuring system.
Preferably, in the second step of the method, four measurement points are circumferentially chosen described, be respectively the peak of described circumference, minimum point and two side intermediate points, and described side intermediate point is the half of described peak relative to the height of described minimum point relative to the height of described minimum point.Like this, when determining the center of circle of described circumference, only need measure horizontal angle angle value and the vertical angle angle value of spacing between highs and lows and two side intermediate points, decreasing measuring amount, shorten Measuring Time, improve installation effectiveness.
Preferably, in the second step of the method, in the port of described heat pipe mouth circumferentially or outer circumferentially choose four equally distributed measurement points.Like this, be not only convenient to measure, and improve the measuring accuracy of port center of heat pipe mouth.
Preferably, in the second step of the method, described supporting surface is chosen three measurement points that do not overlap.Like this, these three points can be utilized to the mean value of the vertical range of the port center of heat pipe mouth as the vertical range of described supporting surface to the port center of heat pipe mouth, improve the measuring accuracy of this vertical range, and then improve the measuring accuracy of thickness of backing plate.
Preferably, in the 3rd step of the method, when arranging survey station point, described measurement mechanism can observe same measurement point on three different survey station points, and the angle of line between adjacent two survey station points and this measurement point is greater than 10 °.Like this, the measuring accuracy of measurement point can be improved.
Preferably, in the 4th step of the method, described measurement mechanism can observe described station meter on three different survey station points.Like this, the measuring accuracy of station meter can be improved, and then improve the measuring accuracy of measurement point.
Preferably, in the 7th step of the method, while the described steam generator to be installed of lifting, described backing plate is placed on described supporting leg.Like this, just further can shorten the time that steam generator to be installed is lifted, reduce installation cost.
Preferably, described measurement mechanism is total powerstation.
Accompanying drawing explanation
Fig. 1 is the laying schematic diagram of steam generator to be installed in the present invention being located circumference and location measurement point circumferentially;
Fig. 2 is the schematic diagram that the body of steam generator to be installed supports with partial structurtes during protective device;
Fig. 3 is the distribution schematic diagram of the location circumference of the longitudinal axis center line being used for determining steam generator to be installed in the present invention;
Fig. 4 is the laying schematic diagram of the port center location survey point of measurement point on supporting surface that on steam generator to be installed in the present invention, body supports and heat pipe mouth;
Fig. 5 is the laying schematic diagram of the survey station point in the present invention.
Embodiment
For saving installation cost, those skilled in the art thinks after studying, before installation steam generator, first can carry out three-dimensional measurement to steam generator to be installed, and according to measurement result calculate steam generator to be installed is installed time required backing plate thickness, make backing plate, and steam generator to be installed is lifted again after backing plate completes, and before steam generator installation in position to be installed, backing plate has been positioned on supporting leg, after steam generator installation in position to be installed, backing plate is between the body of supporting leg and steam generator supports, namely after steam generator installation in position to be installed, backing plate is positioned on supporting leg, the body of steam generator supports and is pressed against on backing plate.Concrete operations are as follows:
The first step: lain on bracing or strutting arrangement or storage facility as Fig. 1 by steam generator to be installed, makes between the minimum point on the body surface of steam generator to be installed and ground at regular intervals, so that measure.The protective device vertical support the web joint 2 simultaneously body of the steam generator to be installed shown in Fig. 2 being supported 1 is removed, so that lay measurement point on the supporting surface of body support.Certainly, also steam generator to be installed can be erected on bracing or strutting arrangement or storage facility.
Second step: arrange measurement point on steam generator to be installed.
As shown in figs. 1 and 3, on the body surface of steam generator to be installed, be positioned at outstanding cylindrical band that body supports above 1 getting respectively a circumference as the location circumference of actual longitudinal axis center line determining steam generator to be installed near steam generator two ends to be installed, wherein, circumference near the top of steam generator to be installed is location circumference A, and the circumference near the bottom of steam generator to be installed is location circumference B.The peak a of circumference A and circumference B is determined respectively with spirit-leveling instrument 1and b 1and minimum point a 2and b 2position, then levelling pole is stood on vertically front side or the rear side of steam generator to be installed, coordinate spirit-leveling instrument measure and calculate a 1and a 2between distance d 1and b 1and b 2between distance d 2, and then calculate two side intermediate point a on circumference A respectively 3, a 4relative to minimum point a 2height value be d 1/ 2 and circumference B on two side intermediate point b 3, b 4relative to minimum point b 2height value be d 2/ 2, namely the center of circle A' of circumference A is relative to minimum point a 2height value and the center of circle B' of circumference B relative to minimum point b 2height value.Certainly, also A' relative peak a in the center of circle can be drawn according to side intermediate point relative to the height value of peak 1height value and center of circle B' relative to peak b 1height value.Again respectively on circumference A and circumference B unwrapping wire to determine measurement point a 3, a 4, b 3and b 4position.Like this, measurement point a is being obtained with total station survey 3, a 4, b 3and b 4horizontal angle angle value and vertical angle angle value after, the D coordinates value of the center of circle A' of circumference A and the center of circle B' of circumference B can be calculated through adjustment, and then the longitudinal axis center line of steam generator to be installed can be drawn.Certainly, when actual measurement, on circumference A and circumference B, three or five or more measurement point can also be got respectively to determine the position of the center of circle A' and B'.Certainly, three or more circumference can also be chosen on the body surface of steam generator to be installed, and circumferentially choose more measurement point selected, to improve measuring accuracy, and then improve the degree of accuracy of the longitudinal axis center line of steam generator to be installed obtained.
As shown in Figure 4, four equally distributed some c are circumferentially chosen in the outer of the port of heat pipe mouth 3 1, c 2, c 3and c 4as the port center location survey point of heat pipe mouth 3, to measure c respectively with total powerstation in subsequent step 1, c 2, c 3and c 4horizontal angle angle value and vertical angle angle value, and then draw the coordinate of port center of this heat pipe mouth 3.Preferably, in the port of heat pipe mouth circumferentially on choose location survey point, to improve measuring accuracy.Certainly, also on the end face of the port of heat pipe mouth, circumferentially measurement point can be chosen, can also at the selected measurement point circumferentially choosing three or five or more.
As shown in Figure 4, on the supporting surface 4 in heat pipe mouth 3 direction, three measurement point e do not overlapped are chosen arbitrarily in the body support of steam generator to be installed 1, e 2and e 3, to measure measurement point e respectively with total powerstation in subsequent step 1, e 2and e 3horizontal angle angle value and vertical angle angle value, and then draw measurement point e 1, e 2and e 3coordinate.Like this, just can according to the port center coordinate of heat pipe mouth 3 and measurement point e 1, e 2and e 3coordinate calculate measurement point e 1, e 2and e 3and the vertical range h between the port center of heat pipe mouth 3 1, h 2, h 3, and then draw h 1, h 2, h 3mean value, namely body support supporting surface 4 and the port center of heat pipe mouth 3 between vertical range h.Certainly, the supporting surface 4 that also can support at the body of steam generator to be installed chooses arbitrarily a measurement point.In order to improve measuring accuracy further, the supporting surface 4 preferably supported at the body of steam generator to be installed chooses four or more measurement point, and the vertical range of the port center of the supporting surface supported using the mean value of the vertical range between these measurement points and the port center of heat pipe mouth as the body of steam generator to be installed and heat pipe mouth.
When carrying out the operation of this second step, can according to field conditions or personal habits adjustment order.That is, first can lay the port center location survey point of heat pipe mouth, lay location circumference and location measurement point circumferentially again, finally lay the measurement point on the supporting surface of body support, as long as determined by measurement point to be measured before determining survey station point.
3rd step: as shown in Figure 5, arranges five survey station point f at the bottom place near steam generator to be installed 1, f 2, f 3, f 4and f 5to lay total powerstation, each measurement point on steam generator to be installed is measured.Total powerstation can observe same measurement point on steam generator to be installed and at least one other survey station point at least two survey station points, is such as positioned at survey station point f 1and f 2on total powerstation all can to the measurement point a on the location circumference A on steam generator to be installed 3and survey station point f 3measure.Certainly, the position of survey station point and quantity are all determine according to measurement point position to be measured.Preferably, the angle α of the line between two adjacent survey station points and same measurement point is greater than 10 °.In order to improve measuring accuracy, preferably on three survey station points, wholecircle observation can be carried out to same measurement point or at least one other survey station point by total powerstation.In addition, in order to improve measuring accuracy, can also arrange between same two adjacent measurement points circumferentially and turn website, and total powerstation can turn website measure this at least two survey station points, and turn measurement data that website measurement obtains as the transit data of measurement data accepting these two adjacent measurement points using to this.
4th step: the below station meter of the industrial measuring system after calibration being placed on the bottom of steam generator to be installed, and total powerstation can observe this station meter at least two survey station points.Preferably, total powerstation can observe this station meter on three survey station points.
5th step: total powerstation is placed in successively on different survey station points, all measurement points that can observe station meter and its with total powerstation and survey station point carry out wholecircle observation, and the horizontal angle angle value and vertical angles value record of measuring station meter and each measurement point and the survey station point obtained are got off, and according to the difference of the survey station point at total powerstation place by the packet of described record, such as when total powerstation is positioned at survey station point f 1time upper, measured and record data be first group of data, when total powerstation is positioned at survey station point f 2time upper, measured and record data bit second group of data.Certainly, when measuring station meter, measurement point and survey station point, arbitrarily can adjust measuring sequence, as long as station meter and this total powerstation now can be observed that measurement point and survey station point are all measured and complete data record when total powerstation is positioned on same survey station point.Also first can measure measurement point, then survey station point is measured, finally station meter be measured.
In addition, transit can also be used to carry out wholecircle observation to station meter and each measurement point and survey station point.
6th step: first optimum configurations is carried out to industrial measuring system, import in this industrial measuring system by measuring the data obtained in the 5th step by group again, and overall adjustment calculation process is carried out to the data imported, generate the three-dimensional coordinate of each measurement point under the coordinate system being true origin with the first survey station point on the body of steam generator to be installed.The survey station point that is positioned at of total powerstation when now said first survey station refers to the first group of data measured and obtain importing, the first group of data such as imported are that total powerstation is positioned at survey station point f 3data measured time upper, then the first survey station is now survey station point f 3.After data adjustment calculation process completes, check weight unit medial error in data processing of information, root-mean-square error, angular observation correction, and check whether the positional accuracy of each measured value meets the requirement of positional accuracy≤0.3mm, if meet the demands, then carry out follow-up data process; If do not meet the demands, then re-start in-site measurement, until data fit accuracy requirement.Then calculate the three-dimensional coordinate of the actual longitudinal axis center line of the body of steam generator to be installed, the port center of heat pipe mouth according to the three-dimensional coordinate of each measured measurement point and survey station point, set up new three-dimensional system of coordinate.This new three-dimensional system of coordinate with the actual longitudinal axis center line of the body of steam generator to be installed for Z axis, with the port center of heat pipe mouth perpendicular to the line segment place straight line of the actual longitudinal axis center line of the body of steam generator to be installed for X-axis.Again three-dimensional coordinate conversion is carried out to the coordinate figure of each measurement point on steam generator to be installed, and then draw the three-dimensional coordinate of all measurement points under new coordinate system.According to the vertical range h between the port center that the coordinate figure of measurement point in Z-axis direction on the supporting surface that body supports draws the supporting surface that body supports and heat pipe mouth, and calculate the thickness t of backing plate according to formula (1).
t=h+H 1-H 2(1)
Wherein, t is the thickness of backing plate; H is the vertical range between the supporting surface of body support and the port center of heat pipe mouth; H 1for the predetermined setting height(from bottom) of the port center of the heat pipe mouth of steam generator to be installed; H 2for the height of supporting leg.Preferably, SMN industrial measuring system is adopted to process measuring the data obtained.SMN industrial measuring system is one is core with system software, and integrated modern high-precision electronic transit, total powerstation, laser tracker, digital camera and various annex are in the industrial measuring system of one.This system obtains the 3 d space coordinate of this measurement point by the angle or range information obtaining measurement point.
7th step: the thickness according to the support backing plate calculated makes backing plate, after backing plate completes, first can utilize hoisting and hanging device that steam generator to be installed is winched to the top of supporting leg, then backing plate is placed on supporting leg, then steam generator to be installed is lifted on backing plate; Also can first backing plate be placed on supporting leg, then at lifting steam generator to be installed; While lifting steam generator to be installed, backing plate can also be placed on supporting leg.As long as after installation is complete, backing plate, between the body of supporting leg and steam generator supports, makes the heat pipe mouth of steam generator be in predetermined setting height(from bottom).Preferably while lifting steam generator to be installed, backing plate is placed on supporting leg, like this, further can shortens the time that steam generator is lifted, and then reduce installation cost.
Adopt the steam generator in such method installation nuclear island of nuclear power station, only need once lift on the supporting leg that steam generator to be installed can be arranged in nuclear island, the time of slinging is short, and installation effectiveness is high, reduces installation cost.

Claims (6)

1. install a method for steam generator in nuclear island of nuclear power plant, it is characterized in that, this installation method comprises the steps:
The first step, is placed on steam generator to be installed on bracing or strutting arrangement or storage facility, and the protective device supported by the body of described steam generator to be installed removes;
Second step, the body of described steam generator to be installed arranges measurement point: on the surface of described steam generator to be installed, choose at least two circumference, and it is at regular intervals between these two circumference, four measurement points are circumferentially chosen described, be respectively the peak of described circumference, minimum point and two side intermediate points, and described side intermediate point is the half of described peak relative to the height of described minimum point relative to the height of described minimum point, so that obtain described circumference central coordinate of circle and and then draw the longitudinal axis center line of described steam generator to be installed, in the port of the heat pipe mouth of described steam generator to be installed circumferentially or outer circumferentially choose four equally distributed measurement points to draw the port center coordinate of described heat pipe mouth, the supporting surface that described body supports chooses at least one measurement point to obtain the vertical range between described supporting surface and described port center,
3rd step, at the bottom place near described steam generator to be installed, survey station point is set to lay measurement mechanism, and described measurement mechanism can observe same measurement point on three different survey station points, and the angle of line between adjacent two survey station points and this measurement point is greater than 10 °;
4th step, places the below of bottom of described steam generator to be installed by the station meter of industrial measuring system, and described measurement mechanism can observe this station meter at least two different survey station points;
5th step, described measurement mechanism is placed in successively on different survey station points, the measurement point that can observe described station meter and described measurement mechanism with described measurement mechanism and survey station point are observed, and the horizontal angle angle value of station meter, measurement point and the survey station point observed according to the survey station point different grouping record at described measurement mechanism place and vertical angle angle value;
6th step, first optimum configurations is carried out to described industrial measuring system, again measured data are imported in described industrial measuring system by group, and overall adjustment calculation process is carried out to the data recorded, generate the three-dimensional coordinate of described measurement point under the coordinate system being true origin with the first survey station point, this first survey station point is the survey station point that described measurement mechanism records first group of place when importing in described industrial measuring system data;
Set up new three-dimensional system of coordinate, and this three-dimensional system of coordinate with the longitudinal axis center line of described steam generator to be installed for Z axis, with the port center of described heat pipe mouth to the straight line at the vertical line segment place of the longitudinal axis center line of described steam generator to be installed for X-axis;
Coordinate conversion is carried out to the three-dimensional coordinate of described measurement point, to obtain the coordinate of described measurement point under described new three-dimensional system of coordinate, and then obtains the vertical range h between described supporting surface and described port center, then draw the thickness t of backing plate according to formulae discovery:
t=h+H 1-H 2
Wherein, t is the thickness of backing plate, and h is the vertical range between the supporting surface of body support and the port center of heat pipe mouth, H 1for the predetermined setting height(from bottom) of the port center of the heat pipe mouth of steam generator to be installed, H 2for the height of supporting leg;
7th step, makes described backing plate, and before described steam generator installation in position to be installed, described backing plate has been positioned on described supporting leg; Then described steam generator installation in position to be installed is made.
2. the method for installation steam generator in nuclear island of nuclear power plant according to claim 1, is characterized in that, described industrial measuring system is SMN industrial measuring system.
3. the method for installation steam generator in nuclear island of nuclear power plant according to claim 1 and 2, is characterized in that, in the second step of the method, described supporting surface is chosen three measurement points that do not overlap.
4. the method for installation steam generator in nuclear island of nuclear power plant according to claim 1 and 2, is characterized in that, in the 4th step of the method, described measurement mechanism can observe described station meter on three different survey station points.
5. the method for installation steam generator in nuclear island of nuclear power plant according to claim 1 and 2, is characterized in that, in the 7th step of the method, is placed on described supporting leg by described backing plate while the described steam generator to be installed of lifting.
6. the method for installation steam generator in nuclear island of nuclear power plant according to claim 1 and 2, is characterized in that, described measurement mechanism is total powerstation.
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CN107221366A (en) * 2017-05-31 2017-09-29 中国核工业第五建设有限公司 The measurement installation method of primary heat transport system in AP1000 nuclear power stations
CN107221366B (en) * 2017-05-31 2019-03-01 中国核工业第五建设有限公司 The measurement installation method of primary heat transport system in AP1000 nuclear power station
CN110006412A (en) * 2019-04-18 2019-07-12 江南造船(集团)有限责任公司 The measurement method of liquefied gas carrier c-type flow container lamination wood strip type

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