Twenty measures to strengthen the quality management of passive ultra-low energy consumption construction projects?
(Draft for Comment)
In order to strengthen the quality management of passive ultra-low energy consumption buildings (hereinafter referred to as passive buildings), guide the healthy development of passive construction industry, solidly promote energy conservation and emission reduction in the construction field, and promote the green and high-quality development of the construction industry, combined with the actual situation in our province, the following measures are put forward:
The first is to strengthen professional and technical support. In the stage of architectural scheme design, the construction unit should invite experienced technical service agencies to provide professional technical consulting services for the quality management of passive buildings throughout the construction cycle. Technical service institutions should give priority to enterprises with corresponding achievements in passive construction. Encourage passive buildings to promote and apply BIM technology.
Second, highlight the functional design. Architectural scheme design should be guided by climate characteristics for functional design. According to the requirements of indoor environmental parameters and energy efficiency indicators specified in the standard, the sensitivity analysis of key parameters of buildings and equipment to building load and energy consumption is carried out by using tools such as energy consumption simulation calculation software. On the basis of simulation calculation, combined with the economic benefit analysis of the whole life cycle of the building, the technical measures and performance parameters are optimized and the architectural design scheme is determined.
Third, ensure the design depth of the construction drawing. The construction drawing design should clearly mark the position of the building sealing layer, draw the detailed drawings of special nodes, and clarify the specific practices and requirements. The design of related disciplines should include energy saving, ensuring the design depth of energy efficiency indicators, indoor environment design parameters, envelope practices and parameters, fresh air equipment parameters, energy system and operation mode.
Fourth, strengthen the review of construction drawings. When reviewing the construction drawings, the review institution shall conduct a full-text review in strict accordance with the passive building design standards and policies to ensure that the design basis is correct and the design content meets the energy-saving standards, focusing on whether the thermal insulation structure and air tightness measures are complete, and the heat recovery mode and efficiency of the fresh air system.
Five, the implementation of special technical review. Before the project starts, the municipal housing and urban-rural construction department shall organize relevant technical institutions and experts to conduct a comprehensive review of passive building design, focusing on energy-saving design articles, energy consumption simulation analysis reports, detailed drawings of thermal insulation bridge nodes of outer envelope structure, position of airtight layer, energy consumption of residential building, air tightness, indoor environment, thermal performance of envelope and ventilation system, relative energy-saving rate of envelope structure, air tightness, indoor environment and thermal performance, etc.
Six, strengthen the special design disclosure. The construction unit shall organize the design unit to make disclosure on the special design of ultra-low energy consumption building technology to the technical personnel and construction management personnel of the construction supervision project department, detailing the design intent, technical indicators, specific practices and quality control measures. When necessary, professional technical service institutions can be organized to carry out special technical training for passive ultra-low energy consumption construction and management.
Seven, strengthen the pre-job training of workers. The construction unit shall, in accordance with the design requirements and technical standards such as Code for Construction and Acceptance of Passive Low-energy Buildings in Hebei Province, formulate operating procedures for major construction procedures, establish process templates for key construction links of passive ultra-low-energy buildings on site, and strengthen pre-job practical training and technical disclosure for frontline construction personnel. Personnel without training or technical disclosure are not allowed to work at their posts.
Eight, the preparation of special construction plan. The construction unit shall, according to the characteristics of the project, construction difficulties and key points of quality control, prepare a special construction plan, formulate detailed construction technology and quality assurance measures for key links such as thermal bridge treatment and air tightness assurance, and conduct on-site practical demonstration. The special plan should be compliant, scientific, advanced, reasonable, targeted and operable. The supervision unit shall prepare the detailed rules for the special supervision of passive buildings according to the special construction scheme, and formulate corresponding quality control measures.
Nine, strengthen the on-site publicity system. Public signs should be set up on the project construction site. In addition to the information of responsible subjects and main management personnel of all parties to the project, information such as indoor environmental parameters, energy efficiency indicators, technical parameters of envelope and energy equipment and systems, main performance indicators of thermal insulation and energy-saving materials and fresh air system equipment, construction practices and technological processes of key nodes for sealing layer and thermal bridge treatment should be publicized, and social supervision should be actively accepted.
Ten, strict design change management. In the process of engineering construction, it is strictly forbidden to change the design content and lower the construction standard without authorization. In principle, it is not allowed to change the relevant design contents of passive ultra-low energy consumption. If it is really necessary to change, it must be reported to the construction drawing review institution for strict review, and reported to the competent department of housing and urban and rural construction in the city where the project is located for the record. For design changes involving the main contents of the building scheme, important technical parameters, main building materials and key construction techniques, the municipal housing and urban and rural construction department shall once again organize relevant technical institutions and experts to conduct change review, and can only be used for engineering construction after passing the examination.
XI。 Ensure the quality of materials and equipment. Strictly implement the re-inspection system for building materials and equipment entering the site. The materials used in passive building energy-saving projects shall meet the limits of harmful substances and shall not cause pollution to the indoor environment; The combustion performance grade and flame retardant treatment of materials should meet the standards. The moisture content of thermal insulation materials should meet the requirements of design, technology and construction technical scheme. Encourage the priority use of materials or products that have obtained high-performance energy-saving labels or green building materials labels.
Twelve, adhere to the construction model to guide the way. Project construction should adhere to the model guidance, and build a solid model in strict accordance with technical standards, construction drawings and approved construction drawings. Hierarchical analysis and display of key processes, posting construction processes and quality control standards in prominent positions of corresponding processes, and encouraging the use of two-dimensional code technology. The entity model shall be organized by the supervision unit for construction, design and acceptance by the construction unit. When the project is fully constructed, the construction unit must carry out the construction in accordance with the quality standards of qualified entity model houses, and shall not arbitrarily change the construction technology and materials used in the project to lower the quality standards.
Thirteen, strengthen the process inspection and acceptance. In the process of engineering construction, the project quality inspector should strengthen the daily quality inspection, strictly carry out the handover inspection of each working procedure and professional type of work, and make records. Supervisors should strengthen daily inspection and patrol, conduct full-time on-site and special acceptance of important processes such as door and window installation, wall and ground insulation construction, building pipeline access thermal bridge treatment, and sealing layer guarantee construction, make on-site records and acceptance records, and keep the image data of key processes as an important basis for project acceptance.
Fourteen, to carry out the website open day activities. In the process of project construction, the construction unit is responsible for organizing the buyer and the contractor to carry out on-site open day activities for at least three times, namely, the handover stage of the main body and decoration project, the concealed installation project and the household acceptance stage, and the open area is not limited to the entity model. Every on-site open day activity should be open to all registered buyers, and the buyers should be informed of the activity time and registration method at least 5 days in advance. The project contractor shall explain the material selection, technological process and quality standards in detail, patiently answer the buyer's questions, make records and give timely feedback. If there is a problem, it must be rectified within a time limit. When purchasing personnel enter the construction site, they should obey the unified management of the organization and consciously abide by various safety regulations.
Fifteen, strengthen the daily quality supervision. The competent departments of housing and urban construction at all levels should strengthen the daily supervision of passive buildings, especially the supervision and inspection of the construction process of concealed projects that affect thermal performance and air tightness, such as wall energy saving, door and window energy saving, roof energy saving and ground energy saving, and strictly inspect and test energy-saving materials. For those responsible subjects and related personnel who violate the mandatory standards for energy conservation, such as construction, design, construction and supervision, it is necessary to increase penalties and record bad behaviors. If the circumstances are serious, it should be included in the "blacklist" in time.
Sixteen, strict energy-saving parameter detection. Before the completion and acceptance of the project, a qualified testing institution shall be entrusted to carry out special testing on the parameters that have a significant impact on the building energy saving and indoor environment, mainly including the air tightness testing of the building envelope, the thermal defect testing of the envelope, the heat transfer coefficient testing of the main parts of the envelope, the fresh air heat recovery device testing, the indoor noise testing and the indoor air environmental quality testing, and the testing report shall be issued as an important basis for the completion and acceptance. Unqualified acceptance, it is strictly prohibited to deliver.
Seventeen, the implementation of construction evaluation system. After the project is completed and accepted, the competent departments of housing and urban-rural construction in each city should take the lead in organizing passive building construction evaluation, and the construction evaluation results will be used as the basis for enjoying relevant policies. The construction evaluation should cover the overall implementation and effect of passive ultra-low energy consumption, the quality of main materials and parts, the quality control of key nodes in the construction process, the control of key links in the supervision process, the service quality of the consulting unit in the whole process, and the handover management of house delivery and maintenance management. If the construction evaluation is unqualified, the relevant units shall be ordered to immediately rectify and reorganize the evaluation. The municipal housing and urban-rural construction department can adopt the way of government purchasing services and hire professional third-party technical institutions to conduct construction evaluation.
Eighteen, strict pre-sale display notice. For commercial housing projects, key nodes such as the difference between passive buildings and ordinary buildings, entity introduction, engineering and technical indicators, performance parameters of main components, and expected energy-saving effect should be displayed in a prominent position in the sales office. In sales promotion, it is necessary to seek truth from facts, truthfully introduce passive building technical indicators and energy-saving effects, and it is strictly forbidden to exaggerate and deceive buyers at will.
Nineteen, the implementation of full decoration delivery. The project should be completely renovated and put into use. For commercial housing projects, public areas such as lobby, stairwell, corridor, bathroom and elevator hall are decorated in place, fresh air system, kitchen fixed furniture, fixed facilities and bathroom fixed facilities are installed in place, and walls and floors are laid in place. For the exclusive part of the owner, it is advisable to provide menu decoration services to meet the different needs of the owner.
Twenty, strict delivery management. When the house is delivered, the construction unit shall prepare a special instruction manual for passive building and provide it to the owner. Special instructions should include energy-saving technical indicators, building plan and indicate the position of sealed layer, instructions on the use and maintenance of doors, windows and equipment, matters needing attention, etc. After the delivery of the house, the property right unit should strictly manage it, and it is strictly forbidden for the owner to change the use of the house without authorization, dismantle the doors, windows and house structure at will, and nail the sealed layer and make holes to destroy the sealed layer during the decoration and use, so as to ensure the use effect of passive buildings. If the use effect of passive buildings is reduced or invalid due to the owner's own reasons, the owner shall be responsible.