Pursuant to Decision: 2023/QD-BCT Approving the program to promote the development of rooftop solar power in Vietnam in the period of 2019-2025; Specific goal: By the end of 2025, one hundred (100) thousand rooftop solar power systems (or equivalent 1,000MWp) will be installed and operated nationwide using rooftop solar power This is a clean energy source and development orientation of the State.
Accordingly, the Prime Minister’s Decision No. 13/2020/QD-TTg dated April 6, 2020 on the mechanism to encourage the development of solar power in Vietnam, stipulates: “The rooftop solar power system is a system of solar power systems. Solar power system with photovoltaic panels installed on the roof of a building and with a capacity of not more than 01 MW, connected directly or indirectly to the electricity grid with voltage level of 35 kV or less of the Party. buy electricity”. At the same time, in Clause 4, Article 9 , it is stipulated: “Organizations and individuals investing in the installation of rooftop solar power systems must ensure requirements on electrical safety, construction work safety, environment, prevention and control. fire and explosion according to current regulations”. In the future, solar power will be more and more widely applied.
The investor should note that: Official Letter 3288/C07-P4 in 2020 guiding the design appraisal and approval of fire prevention and fighting for solar power plants and rooftop solar power systems issued by the Police Department Fire prevention and fighting and rescue issued; In order to make optimal use of solar power with the maximum lifespan of solar panels, the acceptance test and completion of the installation of the solar power system on the roof need to ensure a safety assessment of the bearing capacity of the house structure. workshop. It is necessary to have a professional inspection consultant to evaluate the safety of the factory structure before installing the solar power system on the roof.
Vietsum inspection will inspect the structure – inspect the quality of the factory’s structure for the most accurate results.
A few pictures of projects that have installed a solar power system on the roof that have been structurally verified by VIETSUM and calculated to be safe enough to install solar panels on the factory roof:
Photo: Installing solar panels on the roof by Vietsum structural inspection-Structural inspection of the Factory Serving the Installation of Solar Power Systems
Photo: Installing solar panels on the roof by Vietsum structural inspection-Structural inspection of the Factory Serving the Installation of Solar Power Systems
Photo: Installing solar panels on the roof by Vietsum structural inspection-Structural inspection of the Factory Serving the Installation of Solar Power Systems
Outline of work to inspect the factory structure? Factory inspection VIETSUM would like to present to customers:
(Contents of outline and process of construction inspection at Vietsum factory inspection)
1. Observing and checking the current state of the works: Manually, combined with visual observations, using camera equipment, steel rulers, measuring machines to determine the width of cracks, ultrasonic machines for determining metal. cross-section of structural elements of the work.
2. Check geometric dimensions: Check the site, measure, redefine the size of the building components, measure and draw according to reality. Made by manual method, measuring directly with steel rulers, calipers of structural components of factory buildings.
Photo: Checking the geometrical dimensions of roof purlins-Checking the Factory Structure for the Installation of Solar Power Systems.
3. Check bolt connection: Check the number, diameter of bolts and tightness of the link. Made by manual method, measuring directly with steel ruler, caliper, force wrench.
4. Concrete strength test: Performed by manual method: drilling for concrete cores directly at the site and then machining, compressing at the laboratory, combined with non-destructive methods using bouncing guns.
5. Checking quantity, diameter of reinforcement and thickness of concrete layer protecting reinforcement: By electromagnetic method using Elcometer THD 331 machine device combined with drilling and chiseling, manual measurement with calipers.
Photo: Checking and checking the quantity and diameter of reinforcement – Inspecting the Factory Structure for the Installation of Solar Power System.
6. Check the deflection of the roof truss beam, the slope of the roof purlin: Performed by surveying method, using leica electronic total station, measuring and determining the elevation of points, calculating the height difference.
7. Check the verticality, deflection of roof trusses: Performed by surveying method, using leica electronic total station, measuring and determining the coordinates of points, calculating and determining column verticality, column inclination, deflection of roof truss beams.
8. Test the strength and hardness of structural steel materials: Check the hardness of construction steel materials with a steel hardness tester.
9. Making report on construction quality inspection: Calculating and checking the bearing capacity of the structure; propose solutions to repair and reinforce (in case the work is damaged or not safe for bearing).
Some models for calculating force of structures according to Vietnamese Standards 5574:2018 and 5575:2012:
Photo: Checking the typical construction model-Checking the Factory Structure for the Installation of Solar Power System
Photo: Checking the typical construction model-Checking the Factory Structure for the Installation of Solar Power System
-> Through ready-made excel spreadsheets, the structure’s load-bearing safety assessment will be calculated.
Some bearing calculation models of structural verification according to American Standard AISC 360-10:
Photo: Checking the typical construction model-Checking the Factory Structure for the Installation of Solar Power System
Photo: Checking the bar element model-Checking the Factory Structure for the Installation of Solar Power System
Photo: Load test DL-Structural Inspection of Factory Service Installation of Solar Power System
Photo: Solar Load Test-Structural Inspection of Factory Service Installation of Solar Power System
Photo:Load test LL-Testing of Factory Structure for Installing Solar Power System
Photo: Load test WL1-Testing of Factory Structure for Solar Power System Installation
Photo: Load test WL2-Structural Inspection of Factory for Installing Solar Power System
Photo: stress ratio test (≤ 1 to ensure bearing safety)-Testing of Factory Structure for Solar Power System Installation
Photo: Checking vertical displacement-Structural Inspection of Factory for Installing Solar Power System
Photo: Horizontal displacement test – Structural inspection-Factory Structural Testing for Solar Power System Installation
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When your project shows signs of unsatisfactory quality as required by the design or there are not enough grounds to evaluate the quality, test and accept the safety capacity of the building structure. workshop, of the rooftop solar power system; please contact us Vietsum Construction Consultancy and Quality Control Joint Stock Company (VCQC): for advice on solutions to assess the actual status of the project, determine the cause, determine the current quality of the structure to have accurate conclusions for your project and safe use of the building, safe and effective operation of the work.
Hotline: 090 959 8771 – Mr Nam
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