Circular 27/2009/tt-Btnmt: Regulations On Tested And Edited A Number Of Marine Cartography Equipment

Original Language Title: Thông tư 27/2011/TT-BTNMT: Quy định về kiểm nghiệm và hiệu chỉnh một số thiết bị đo đạc bản đồ biển

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The CIRCULAR regulates tested and calibrated measuring devices map the sea _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ the MINISTER of NATURAL RESOURCES and the ENVIRONMENT pursuant to the law enacting the legal text;
Pursuant to Decree No. 25/2008/ND-CP DATED April 3, 2008 of the Government functions, tasks, powers and organizational structure of the Ministry of natural resources and environment, has been modified and supplemented in the Decree No. 19/2010/ND-CP of March 2010 and Decree No. 89/2010/ND-CP on August 16, 2010 by the Government;
Pursuant to Decree No. 11/2002/ND-CP dated 22 January 2002 by the Government on surveying and mapping activities;
Proposal of the General Director of the Bureau of Sea and Islands Vietnam, Director of science and technology and Director of the legislation, the PROVISIONS: chapter I GENERAL PROVISIONS article 1. Scope this circular regulates the test and edit some of the equipment used in marine cartography, including: 1. position the Machine;
2. the digital compass;
3. Air-wave sensors;
4. Measuring the speed of sound;
5. deep single feedback meter beam;
6. deep gauge above most rays;
7. measuring systems with single beam feedback;
8. Systems using multi feedback meter beam.
Article 2. The object that applies to this circular apply to organizations, individual when using the equipment as defined in article 1 of this circular.
Article 3. Explanation of terms In this circular, the following words are interpreted as follows: 1. Fix the markup or retrieved data from a machine or a system are measured continuously at a time.
2. satellite compass is the use of satellite positioning data obtained by 2 to calculate the position of the antenna into the rear of the Center seam 2 antennas.
3. turn the Head (English: Transducer) is the Department of measuring depth of feedback made work and collect sound waves to measure. Measuring distance is calculated from the first of this variable to the sound wave reflection surface.
4. turn the audio head submerged Speed (was: Draft or Draught) is the distance from the water to the sides of the head turns quiet.
5. the deviation index (Index) of a depth gauge depth of feedback is skewed system in measurement of depth gauge reactions, primarily due to the delays in the process of measuring signal processing of your cause.
6. the vertical inclination is the angle deviation deviation of the device in the direction of tilt along the measuring vessel.
7. tilt angle is skewed horizontal deviation of the device in the direction of the horizontal tilt measurement vessel.
8. Deviation of direction deviation is the angle of the device in the direction of the main axis of the measure.
9. Air wave sensor is identified and provided to the affects of water waves that cause horizontal tilt vertical tilt, ships such as cruise ships, the dềnh to the stamping machines, other equipment used for major improvements to the measuring results.
Article 4. General requirements for the testing, marine Instrumentation Calibration 1. All the equipment and all measuring systems before construction must be tested, calibrated according to the provisions of this circular. Just be put into using the equipment test results, calibration requirements.
2. Allow only those with qualifications, specialization in surveying or related, there are at least 3 years work experience, have learned through safety classes and fully equipped safety vehicles made the work test, calibrate measuring equipment at sea.
3. The test, calibrate the device in the field must be conducted in the areas outlined in the detailed technical design of the project. Just conducted the testing, tuning work when environmental conditions, weather, climate meets the conditions of employment of all the machinery and equipment used in testing, tuning process.
4. test results must be technical surveillance officers to sign.
5. The figures, results reporting, testing, calibration must be stored along with the original material of the products of the project.
Chapter II EQUIPMENT MARINE CARTOGRAPHY article 5. Tested positioning 1. Each position is tested by one of the two following methods: a) tested at benchmark;
b) tested after the air Board measure.
2. Tested in benchmarking is done as follows: a) the most recent antenna positioned on a known point coordinates (equivalent basis points measure the draw);
b) connect your position with your computer;
c) after your position has completed the boot process and operational stability, using a program to locate data records data record continuously for 1 hour, about spacing between 2 times record is 10 seconds. The position figures to be computer switch on the flat coordinates (X, Y, H) according to the conversion parameters are specified in the technical requirements of the project;
d) reporting test results according to the form prescribed in annex No. 1 attached to this circular After test measurements. The report includes the following:-results table count deviation: DX = Xgốc-Xthu = Ygốc-DH = Ythu DY Hgốc Hthu-DS =-ground positioning accuracy: m = (n is the number of data records)-level positioning accuracy: mH =-conclusion: the machines meet the requirements to put into production, if ground accuracy to calculate the height, does not exceed the accuracy stated in the specifications of the machine; or does not meet the requirements, not put into production.
3. Tested after Assembly on measuring as follows: a Boat anchor, must be measured) forced sure at the Jetty where the high points located at the root of the precision drawing control points;
b) positioning must be installed in the right technical requirements;
c) total electronic Machines used to measure testing must be tested, edit the source of the error and must have the following minimum technical features:-precision angle measurement by 6 ";
-Tilt angle measurement accuracy by 10 ";
-Measuring precision edge by ± (3 + 3ppm) mm x D (D is the length measure);
d) distance from where the whole machine electronic test equipment to measure things to point the direction, the set point the GPS antenna must be guaranteed to be error of the measuring point location not to exceed 10 cm;
DD) before measuring test must connect and launch available positioning, data recording program; synchronize the clock system of data recording program to locate with the clock of the measure;
e) test measurement process is started when the people in charge of measuring the play command for transmitters, measured by the or symbol. Before each broadcast measurement command, who must request the participants prepared. When all was ready, the person in charge of the play command to simultaneously measure the GPS antenna to the whole machine fixtures and fix the GPS positioning data. Each measure measuring data records on the form book, the time measured was credited to the second. Case air total functional computer coordinates the instant it burn out is coordinates;
g) times tested measuring not less than 20 times, the gap between the minimum measurement time is 3 minutes;
h) after the test gauge, metric coordinates of the antenna at the time of the test are filtered out from the data file to fix the coordinates on the Board and total measurement data to put into a spreadsheet report results tested;
I) reporting test results with the content as prescribed in paragraph 2 of this Article.
Article 6. Test your compass 1. A satellite compass testing) The test for satellite compass made by placing two antennas of the air up 2 points already know the direction (or already know the coordinates to calculate the standard direction);
b) after the operation, using a computer software records the data driven computer-giving constantly for 1 hour, about spacing between 2 times record is 10 seconds;
c) compare the figures with the standard direction;
d) reporting test results according to the form prescribed in annex No. 2 attached to this circular with the following minimum information:-Skin direction deviation = aLB-agoc in which compass direction, the agoc aLB is the original direction;
-Compass accuracy: ma =, where n is the number of times the measurement.
-Conclusion: the machines meet the requirements to put into production if accuracy was not to exceed the accuracy stated in the specifications of the machine; or does not meet the requirements, not put into production.
2. the compass testing has installed on board a Ship should be) measurement: neo sure at the port, make sure the spacecraft do not fluctuate too 1o when measuring test;
b) turn on the compass and data recording software compass direction. The clock of the computer data records and the clock of the officers performing the test must be synchronized, accurate to 0.5 seconds;
c) using the total network and coordinates the facility in the area tested with the request to ensure the accuracy of the measuring point 2 means the direction the ship does not exceed 10 ';
d) using two mirrors placed on measuring 2 points show the direction of the ship;
DD) after the data recorder system compass on board operation, the whole machine fixtures and mirrors measure ready for the test, then began the process of testing measurement under the command of Captain via radio or by symbols;
e) each time the measurement is made as follows:-measure the total aim to mirror set bow, tell the supervisor when ready. Supervisor broadcast command to simultaneously measure up to the mirror and fix data compass direction;
-The measured total transfer fast driven spot mirrors placed at the stern, the report to the Minister when ready. Supervisor broadcast command to simultaneously measure up to the mirror and fix data compass direction;
g) each test performed 20 times measured. Time for a measured no more than 2 minutes;
h) measuring results are calculated by the worksheet as follows:-the real spacecraft in each measure calculated through coordinates 2 bow-stern mirror points. Compass direction is calculated by the average value of the values recorded in the timeline of each measure;
-Deviation of the direction each measure calculated by: direction-direction of the compass;
-The number of the main improvements in the average deviation value.
Article 7. Air wave sensor testing 1. The machinery and equipment used in a tested your wave sensor comprising: a) standard testing machine, edit the items according to the rules and to determine the difference in precision measuring and measuring about going high reach from 1 mm/1 km;
b) measure has divided line mm;
c) kits tested have a soleplate latest wave sensors, soleplate has a vertical tilt to marker, the horizontal center of the machine, tilt. Sets the rates the Department can do tilt the soleplate according the horizontal axis of the vertical tilt, tilt of the sensor signal.
2. test procedure are as follows:

a) air wave sensors on the Roman Empire and the right direction horizontal, inclined, vertical tilt was marker;
b) restart your computer and connection with the enclosed software to record your metrics to measure. Use a standard price for marine air in a horizontal position. Use software to read out the initial deviation values of the sensors (Roll, Pitch, Heave);
c) changing the inclination of the tilting direction horizontal machines placed under each strip measured horizontal tilt across levels of air, use your standard marine gauge to determine exactly the tilt. Record the results of measuring the inclination and horizontal tilt measurement book value. If the transverse tilt measure strips of small machines, the number of times the measurement test (n) less than 10 times, they must reduce the steps to change the tilt test Emperor to have the number of times the measurement of n ≥ 10;
d) changing the inclination of the machine in the direction of tilt along each longitudinal tilt meter strip across levels of air, use your standard marine gauge to determine exactly the tilt. Record the results measure the tilt and tilt values along the measurement book. If the vertical tilt of the small measuring range, the number of times the measurement test (n) less than 10 times, they must reduce the steps to change the tilt test Emperor to have the number of times the measurement of n ≥ 10;
DD) change the height of each step 0, 2 m with 1 cm accuracy, write the squid changes and measures launched by the air waves on the high speed ink it out the window;
e) Computer error horizontal tilt, vertical and inclined wave measurements have measured according to the formula m =, where ∆ is the deviation between the actual value and the value given by the main wave machines;
g) reporting test results according to the form prescribed in annex No. 3 attached to this circular. The machines meet the requirements if the error does not exceed the accuracy stated in the specifications of the machine.
Article 8. Test gauge speeds the process of testing your sound speed measurements as follows: 1. Use a test to measure the speed of sound in pure water container with water tank temperature measurements using an accurate thermometer. Record the sound speed measurement data, water temperature within 15 minutes with 1-minute spacing 1 reads data.
2. Calculate the speed of sound in each measure according to the formula: V = +4, 67xT-0 1449.2, 0569xT2 + 0, 00029xT3 + (1.39-0, 012xT) (S-35) + 0 01625xD, where: V is the speed of sound transmission temperature T S water salinity, in this case by not.
D degree of flooding in Sonic 3. Set the comparison table between the 2 speeds measured.
Deviation calculated according to the formula: V = Vđo-Vtính accuracy is calculated by the formula m = n is the number of times the measurement.
4. test result reports according to the form prescribed in annex No. 4 attached to this circular. Air quality if the accuracy obtained does not exceed the accuracy of measuring the speed of sound.
Article 9. Depth gauge testing single-beam feedback when measuring speed of sound 1. Preparation: a) measuring speeds have technical quality testing;
b) Test Disc is fixed on the steel cables certainly doesn't scale. On the cables have the distance mark by metres surface of the disc. The error of not more than 0, 5 cm marker;
c) determine and install the first audio variable level of flooding on the meter;
d) lower marker disc must be marked on the ship measured with an accuracy of 5 mm above the top of the turn. Marker is convenient for lower test disk down each step measured from the surface of the disc to the beginning sound variables;
DD deviation index) records the depth of the available (if any) out the window.
2. test procedure as follows: a) using sound speed measurement of sonic speed in going through the water column where tested. Depth spacing retrieved data is 0, 5 m;
b) Drop test disk down the smallest air depth can be measured, the data entry speeds have measured for the water column from the start to make the discs tested on meter deep. Record the measured data with deep gauge out the window;
c) Calculate the deviation measured by the depth of the depth gauge (Dds) with the actual test disk flooded (Ddia). Use this deviation of the main index back to deflect the original depth. After this step, the deviation between the depth (Dds) and (Ddia) must be equal to 0. With no private entries to enter only numbers skewed this depth on this deviation shall be added to item level flooded the head turning sound;
d) Lower disk next tested down each step of 2 m at the same time change the speed of sound was measured for the water column from the start to make the disc tested in depth gauges. Data recorder measured depth (Dds) and the flooded (Dng) out the window. Calculate depth between deviation (Dds) and (Dng). Di = Ddsi-Dngi, which is-deep measures Ddsi in measuring ink tested i, Dngi-is the flooding of the disc tested at test gauge cartridge i. Steps must be taken to the maximum depth can be performed and must repeat the measurement if the number of times the measurement (n) not exceed 10;
wrong depth measurement) of the machine according to the formula: m =;
e) reporting test results according to the form prescribed in annex No. 5 attached to this circular. Air quality put into use if the error obtained is located within the limits of the accuracy of the machine.
Article 10. Depth gauge testing single-beam feedback when there is sound speed measure 1. Preparation: a) Test Disc is fixed on the steel cables certainly doesn't scale. On the cables have the distance mark by metres from the table. The error of not more than 0, 5 cm marker;
b) determine and install the first submerged in variables level gauge;
c) lower marker table must be marked on the ship measured with an accuracy of 5 mm above the top of the turn. Marker is convenient for lower test disk down each step measured from the surface of the table to the top of the negative variables;
d deviation index) records the depth of the available (if any) out the window.
2. test procedure: a) speed settings for depth gauges in the best value that we could know in the area tested. Define and edit the deviation index initial depth of the machine;
b) Lower down the disk as a step of 2 m with an accuracy of 0, 5 cm, change speeds until the depth measurements to the disk coincides with the depth of the disk. Record speeds in the depth it out the window. This step must be performed to the maximum depth can be performed and must step down tuning discs to ensure meter count (n) is 10 times;
c) Pull up each disk disk got depth with a precision of 0, 5 cm, sound speed installation scored for each depth. Read and write data to the depth gauge is out the window;
d) Calculated the deviation between the 2 disk at lower depths and pull up bar at disk at each tested according the formula: Di = Dix-Dil. Which measured depth is Dix-in depth ink when i test the disk down. DIL-is the depth measured at test depth cartridge when i drag the disc up;
DD) Wrong measurements of depth is calculated according to the formula: m =, where n is the number of depth cartridge conduct testing;
e) case wrong deep measurements obtained guarantees are technical features of the machine then conclude your quality assurance, put into production. If the error obtained exceeds the error stated in the technical features of the machine must then perform the steps specified testing from point b to point to this paragraph add 2 DD again. The case both times after the test result wrong depth measurements obtained guarantees are technical features of the machine then conclude your quality assurance, put into production. If there is at least one more time is not guaranteed, then the conclusion is not enough quality machine production.
Article 11. Depth gauge test reply multi beam 1. The test was done for the beam in the middle of a trail.
2. test procedure as follows: a) using resistive measuring sound speed is the speed of sound in place of testing, import figures were measured to gauge depth;
b) Drop test disk down the smallest air depth can be measured. The depth of the test table is determined with an accuracy of 0.5 cm;
c) Measured the depth of the depth gauge using the Inspector panel (50 Fix with spacing of 5 minutes/1 fix);
d) Calculate the deflection of the air system depth (index) with the depth of testing by disk size (D1) with the average depth of the table (measured depth gauges, type the wrong metric coarse) (D2);
DD) enter the number (index) were calculated according to the formula: I = D1-D2 into the depth gauge. After this step D1 is equal to D2;
e) Down the table to check down each step of 2 m with a precision of 0, 5 cm for their ability to allow of the measuring zone conditions (depth, flow, waves), at each depth gauge depth gauge, used 25 fix with spacing of 5 seconds; Calculate the average measured depth after the wrong depth data types.
3. test result reports according to the form prescribed in annex No. 6 attached to this circular with the following content: a) the deviation Calculation depth: Di = Ddsi-Dngi, which is-deep measures Ddsi in measuring ink tested i, Dngi-is the flooding of the disc tested at measuring ink tested;
b) false measurements of the depth according to the formula: m =;
c) conclusion: air quality put into use if the error obtained is located within the limits of the accuracy of the machine.
Chapter III TESTED and CALIBRATED MEASURING SYSTEM of SINGLE BEAM ECHO DEEP and DEEP MEASUREMENT MULTI BEAMS FEEDBACK Item 1 TESTED and CALIBRATED MEASURING SYSTEMS with SINGLE BEAM ECHO article 12. Depth measuring system by single feedback meter beam 1. Depth measuring system by measuring the single complete rays feedback includes the following machines: a) positioning;
b) Your Compass;
c) deep single feedback meter beam;
d) wave sensors;
DD) computer survey software installed.
2. After the installation, measure the eccentricity, install the necessary parameters to conduct testing of the entire system to determine the number of editing for the entire system or for the processing of data.
Article 13. Tested first make weak due to the motion of the ship 1. To determine the weak of the negative variables when the ship motion measurement method using standard marine air station from a geometry set on shore to mia standard cards placed on the location of the first turn onboard sound. If while testing the ink the tide changed drastically, the need to add 1 meter to the waterline to mia tide.
2. The test must ensure: a) convenient for standard marine gauge to mia on the ship;
b) when the train reached the required stability remains safe when running towards advancing ashore;
c) in the measure without the obstacles affecting the motion of the ship.
3. measuring procedure as follows: a) ship out the testing, static float. Measure to mia mia on board and measure the tidal water level;

b) Runs trains in the direction from the shore out to the maximum speed (revs) stable, when ran test then read of mia on the Board, write to the columns Run down. Then turn the ship back, running in the direction to the shore with the previous velocity, when the test ran, then read the measurements on the Board, write to mia columns Running backwards;
c) Measure to tide water level measuring mia.
4. The times measured according to point b of paragraph 3 of this article is made for speed in turn is 2, 3, 4 Knt Knt Knt, 5, 6, 7 Knt Knt Knt and 8 Knt (knots).
5. Số liệu đo ghi theo mẫu:
Bảng 1: Mẫu bảng kiểm nghiệm độ lún đầu biến âm





Tốc độ tàu


Số đọc khi


Thủy triều


Lún


Số hiệu chỉnh




Chạy ngược


Chạy xuôi




Đứng yên


0.70


 


1.12


0.00


 




2 Knt


0.73


0.73


1.19


-0.10


0.10




3 Knt


0.65


0.63


1.33


-0.15


0.15




4 Knt


0.62


0.58


1.43


-0.21


0.21




5 Knt


0.58


0.58


1.50


-0.26


0.26




6 Knt


0.43


0.41


1.60-0.20 0.20 weak buy H0 =-(Hix-Hin)/2 + TT0-TTi in it: buy H0-read check out weak when the train standing still stuck check when reading Numbers-Hix ship ran down the speeds i Hin-read check out weak when the train runs contrary to the speed i TT0-read above the tide when the ship stand by TTi-read above the tide when the train runs with maximum speed i 6. Edit number obtained is put to survey software to automatically calibrate the measuring data of ship pace if the software function. If the software has no function adjust flat according to the speed of this calibration table shall be used for the processing of the following data.
Article 14. Determining latency positioning 1. Select the area with relatively smooth terrain, steep about 10-20 degrees, the depths below 100 m, the design of the road test run perpendicular to the road, direction running up the slope. Need profile long enough (500-m) to get good samples and need are smooth (not horizontal, non-gềnh folding ramps);
2. Run the measure 2 times by road was designed with 2 different ship speed. The speed of the ship 2 times running together, the difference in at least 9 km/h (Figure 1) Figure 1: map of the running Board determine latency positioning according to the steep face positioning latency is calculated by the formula t = v2 is the speed of the train running fast;
v1 is the speed of slow trains;
 is the deviation between the two side by side position cut sound heavenly.
If the terrain where the flat test you can run on a recognizable object (a sand dunes such) with running Board as described in Figure 2.

Figure 2: running the ship determine the latency positioning according to the flat surface.
Category 2 TESTED and CALIBRATED MEASURING SYSTEM USING MULTI FEEDBACK METER DEEP RAYS of article 15. Requirements for the testing and calibration systems by the multi-beam feedback meter 1. Done after installation of the complete system and complete the measurements determine the deviation of the device:-wave sensors sensors, compass, machine head turning of deep gauge above maximum beam, identified the top make weak Panel due to the motion of the ship. The necessary parameters (coordinates, altitude, conversion parameter, the wrong term of positioning, depth measurement, measure the spacecraft, measuring the angle of horizontal, vertical tilt, height measurement of wave) must be installed to complete the system. To measure the cross-sectional data speeds in the area measure test and put into the system.
2. The testing, this correction is only done when the weather is good, the wave under 1 m to ensure the quality and depth measurements at least waves shake.
3. position the Machine used in the system must have an accuracy better than ± 3 m ground.
4. On the ship measured must have at least one set of computers have installed data processing software testing, survey data. This software has the feature of editing the properties for the latency deviation of vertical tilt, navigation, compass direction, deflection deflection horizontal tilt past system's testing measures.
5. Must measure at least 2 pairs of test road.
6. test result reports according to the form prescribed in Appendix No. 7 attached to this circular.
Article 16. Tested weak sound weak testing variable head head turning sound due to the motion of the vessel was done as for single beam systems provided for in article 13 of this circular.
Article 17. System testing 1. The system-wide testing was done by "measure" to find out the following: misleading positioning latency (for systems that do not have data sync devices); vertical tilt deviation; local deviation and deviation of the horizontal tilt.
2. Identify positioning latency: perform as metering system for single beam echo depth stated in article 14 of this circular.
3. Determine the deviation of vertical tilt: a) Choose areas with relatively smooth terrain, steep (as steeply as possible), depth below 100 m, the design of the road test run perpendicular to the road. The length of the run is at least from 500 to m;
b) Run twice the measurement has the same design ship speed. The direction of run 2 run is comparable as described in Figure 3;

Figure 3: map of the running Board determine the deviation of vertical tilt c) after the main improvement is the latency deviation of vertical tilt, positioning is determined by the formula p = tg-1, which is the vertical skew deviation: p need to find, is the left side of the cut to 2 times the measurement at the point z depth. 4. Determine the deflection method: a) the deviation method is integrated influence of deviation of the Compass: direction, the direction of the head turns deep measure sound in comparison to the axis of the ship;
b) To determine the remaining deviations from this, must select a region with sharp objects (e.g. a sand dunes, for example). The test must be done by 2 way measured in 2 opposite directions the two measuring streaks were 2 star husband of fringe rays from 10 to 20% of the trail and part of this compact of mogul-covered spouse;
c) To avoid undesired latency positioning and tilting vertical deflection to determine the deviation method, must the latency before performing the calculation method of deviation from this position;
d) deviation methods are calculated by the formula = tg-1 as described in Figure 4 the Dx is the left of the object according to the test measure of 2 measuring line tested.
DL is the distance between 2 measurement lines tested.
is local deviation need search.





Figure 4: running the ship determine the deviation method of Unit 5. Determine the deviation of horizontal tilt: a italics this horizontal deflection) caused by the deviation of the horizontal tilt sensors and a deviation of the variable head horizontal tilt axis of sound measuring vessels. To measure this deviation must select the seabed is flat, measured on a comparable 2-way road. 2-speed constant run time;
b) To avoid interference, the system must be modified to delay major vertical and inclined, have been identified;
c) horizontal inclined deviations are determined by measuring about vertical translation of the data measured depths by the rays to the edge of the road measure and is calculated by the formula R = tg-1 according to the description on the figure 5.








R is the horizontal skew deviation needs identified.
z is the depth;
DZ is the deviation of the depth of edge beam 1, Dy is the distance from the center line to the measuring point Dz Figure 5: horizontal skew deviation determined chapter IV IMPLEMENTATION Article 18. Effective enforcement of this circular effect since January 5, 2011.
Article 19. Responsible organizations made General Director of Vietnam and Island Sea Bureau is responsible for guiding, monitoring, checks the implementation of this circular.
In the process, if there are problems, the agencies, organizations, personal reflections in time about the Ministry of natural resources and the environment to study, modify and supplemented accordingly./.