College】 【weak air separation, refrigeration equipment and construction equipment installation and acceptance requirements (3).

<br> <BR> VII bromide absorption chiller <BR> <BR> section 2.7.1 of this section shall apply to the heat source for the stream of steam or hot water absorption chiller management, the use of other heat sources .unit may refer to the implementation of this section. .<BR> <BR> Section 2.7.2 installed on the unit level article is a combination of many years of experience required amendments. .<BR> <BR> Section 2.7.3 of this section is a section in the vacuum pump unit installation requirements. .Three is to check the pump's performance to meet the needs of units to ensure their normal operation. .<BR> <BR> Section 2.7.4 is that this article is divided into a few large plants of large units, installation of pipeline required to connect their internal requirements. .<BR> <BR> Section 2.7.5 leak test article system leak detection process is necessary. .Nitrogen or dry compressed air leak charge, its test pressure 0ZMPa (gauge pressure) refers to the maximum test pressure, the practical application of generally take 015 ~ 02MPa (gauge pressure). .This reference to current national standards (absorption chillers test "the relevant provisions. <BR> <BR> Section 2.7.6 shall also necessary to test the system vacuum leak detection process. Reference to the current national standard" absorption chillers .test "the relevant provisions. <BR> <BR> section 2.7.7 of this section is a section within the wash unit requirements. wash there are two ways: First, water unit, the starting unit in the wash cycle water pump; .Second, the former on the basis of a flushing method, using a heat source heating unit heating the water cycle on the washing cycle, construction requirements and conditions can be determined. <BR> <BR> Section 2.7.9 based on the article in the original specification .Also refer to the current national standard "absorption chillers technical conditions" the relevant provisions of the system plus the specific requirements of liquid has been revised. <BR> <BR> Section 2.7.10 based on the article in the original specification and reference combined with years of construction experience .technical requirements of the equipment have been revised. which mixed refrigerant after the brominated reasonable proportion of water should not be more than 104 equipment technical requirements with reference to the relevant amendments. <BR> <BR> VIII combined cold storage <BR> <BR .> Section 2.8.1 of Article 80 since the combination of cold storage is a product of new developments, to meet the needs of this development, an increase of the contents of this section, than the original specification to expand the scope of application. <BR> <BR> section 2.8. .3 This provision of the library board to examine the contents of which the core library Banban check the mechanical properties of foam, not require the installation of units to test the performance index, but the building department or by a single supplier to provide the actual performance index of physical .check the review, to prevent rework phenomenon. <BR> <BR> Table 2.8.3 line with current national standards, "combinatorial library with a sandwich panel technology," the relevant provisions. <BR> <BR> section 2.8.4 shall .this combination of cold storage on the body of the library makes provision for installation of the basic requirements. <BR> <BR> Section 2.8.5 Section 2.8.7 of Article ~ Article According to the current standard "combination of cold performance test method," the relevant provisions of the development of the atmosphere .technical requirements for installation of cold storage, controlled atmosphere cold storage is a combination of cold storage in the body of a library. <BR> <BR> section 2.8.8 this article is based on the current national standard "combination of cold performance test method" developed by the relevant provisions. which .Disi Kuan is a combination of new design in the field need to install the cold air after cooling the assessment database provides a combination of cold shaping batch manufacturing without the assessment. <BR> <BR> Chapter <BR> air separation plant .<BR> <BR> <BR> Section I General Provisions Article 3.1.1 of this chapter the scope of this article, including large, medium and small-scale air separation equipment installation, but does not include specific technical requirements of air separation equipment, such as .military, marine, mobile and production of liquid products of air separation equipment. <BR> <BR> Article 3.1.2 formulation of construction experience this reference. As complete sets of air separation equipment, especially large and medium-sized equipment involved, materials, valves .and control instruments and other pieces of many kinds of specifications, it must send a detailed inventory of inventory and packing list, inspection and acceptance. this section for the conventional construction process, done prior inspection found problems affect the quality of construction and to prevent disruption. <BR> < .BR> in 3.1.3 the basis of this article stressed that regardless of which freeze the construction unit construction, there must be a qualified inspection and testing of materials, equipment installation before the transfer by check and complete the formalities to install the construction unit. <BR> <BR .> Section 3.1.4 shall present, in stones air separation equipment, storage devices have been other types of heat exchangers and molecular sieves replaced, so the stone fill is not provided; if there are any stone filler equipment technical documentation requirements should be implemented. < .BR> <BR> nitrogen filling sealing the first part of Article 3.1.5 of high and low pressure chamber pressure should be maintained with reference to current national standards "aluminum air separation technology," the relevant provisions. <BR> <BR> Article 3.1.6 .degreasing methods and degreasing agent in the current national standard "for construction machinery and equipment and acceptance of universal norms" and Chapter V as expressly provided in the appendix; parts of the surface oil residues methods and evaluation criteria in the current national standard "medium-sized air separation .Equipment technical conditions) Appendix C also has clearly defined, this specification is no longer separately. .This provision of the relevant requirements of air separation equipment, degreasing, is conducive to safe operation, to prevent fire or explosion. .<BR> <BR> Reference to Article 3.1.7 force in the country, "Pressure Vessel Safety Technology Supervision Order" the relevant provisions. .For compressive strength test equipment in place before the issue, given the large and medium air separation equipment to be aluminum structure, plate-fin heat exchanger system of small air separation equipment and tubular steel heat exchanger, with the pressure equipment .non-independent pressure components, such as adsorption, etc.; the compression equipment in the factory strength tests were carried out by the strict inspection and quality certification with the equipment brought with the product. .With compression equipment in quality assurance, and intact cases, repeated many times there is not much good strength test, so this provision has been made a strength test factory and have qualified for the strength tests do not permit, but must be .tightness test. .Issues related to storage time, due to rust-proof methods, storage conditions, storage space and other reasons is difficult to clearly defined, so this is not the time for the storage requirements depending on their test results to determine whether the strength test. .<BR> <BR> 3.1.9 According to the present this article, "Pressure Vessel Safety Technology supervision order" of the relevant provisions of the formulation. .Provisions of this article because of the safety valve opening pressure of each plant is slightly different, so the emphasis on equipment, technical documents should be implemented. .Section 3.1.11 <BR> <BR> this article is based on the current national standard "large and medium air separation equipment technology" developed by the relevant provisions. .Provisions of this article with a purge of the requirements of the medium to prevent the equipment has been skimmed by the oil pollution again. .<BR> <BR> 3.1.12 State shall refer to the existing welding specifications, procedures, in order to have conflict in the implementation of luminescence, emphasizing technical documents according to the provisions of equipment. .Wires and rods for the current standards have been promulgated and implemented, it will not repeat the provisions of this section. .<BR> <BR> First air separation plant in Article 3.1.13 of the compressor, fan and pump installation requirements and the current national standard "compressor, fan and pump installation and acceptance of construction" in the relevant provisions of the same, the .specification will not repeat the provisions of relevant content. .One on the air or water as the medium to room temperature under load test run should be responsible for installation of units, the construction unit to attend to other media load commissioning by the construction unit should be responsible for installation of units to participate and address the causes of quality are installed .problem. .If technology does not allow single load test run with air or water at room temperature for the test run media, the single load test run and commissioning of complete sets of air separation unit merger. .<BR> <BR> Fractionating tower assembly <BR> <BR> Section 3.2.1 This section applies to the whole factory fractionating tower installation. .<BR> <BR> Section 3.2.2 This section applies to the disintegration of the factory of the fractionating tower installation. .<BR> <BR> Article 3.2.4 The purpose of this provision is to require to take correct lifting methods, equipment and piping to prevent damage. .Section 3.2.5 with reference to Article <BR> <BR> ASU conditions on manufacturing technology has developed this air separation unit in place, aligning and leveling requirements. .<BR> <BR> Article 3.2.7 of this section is a reference to the current national standard (steel structures for construction and acceptance) and other relevant provisions of the amendment. .<BR> <BR> Section 3.2.8 for the general provisions of this Article, the purpose is to prevent piping and welding stress generated when the stress applied to prevent the occurrence of air resistance and water pipes. .<BR> <BR> Section 3.2.9 of this section shall be laid emphasis on the aspect and slope, and the requirements of horizontal pipe, tube favor the flow of liquid or gas, will not produce the phenomenon of air resistance, or liquid resistance, and improve the measurement accuracy. .<BR> <BR> Section 3.2.11 shall the provisions of this section for regular checks to pay attention to prevent the neglect phenomenon. .<BR> <BR> Purge <BR> <BR> Section 3.3.1 combined with years of construction experience, makes provision for the requirements before and after purging. .<BR> <BR> Section 3.3.2 of this section is to purge the conventional procedural requirements, the purpose is to prevent dirt blown into the tube fractionation tower. .<BR> <BR> Section 3.3.4 of this Article shall purge the air pressure range of values, but should also be noted in the implementation of this specification shall comply with the provisions of Article 3.1.11; that is oil free equipment and pipeline applications .clean, dry, oil-free air, mainly to prevent the equipment and piping has been skimmed be re-contamination, to clean the request. .<BR> <BR> The first purge of this provision of Article 3.3.5 is an evaluation parameter of time, but also to check the white paper or white cloth without mechanical impurities in the eligibility criteria. .<BR> <BR> <BR> <BR> Fourth overall pressure test this provision of Article 3.4.1 of the overall total system pressure test should be conducted after sweeping clean, to prevent dirt or bumps within the valve device .core and so on. .According to the construction site conditions, if the first pressure test after the purge, has taken to ensure that measures the overall cleanliness within the system, but also the first trial after the purge. .<BR> <BR> Section 3.4.2 of this section shall apply to large and medium air separation equipment, pressure test. .<BR> <BR> Provisions of Article 3.4.4 of imports and exports within the valve is a separate air-tightness test equipment for the import and export of valves. .<BR> <BR> Section 3.4.5 of this section is a whole section of air separation equipment factory pressure test requirements. .Article 3.4.2 of this section by section 3.4.4 ~ article are manufactured on-site assembly of the disintegration of the fractionating tower test requirements, therefore the provisions of this section alone, the overall installed to prevent the leakage test fractionator have missed the phenomenon. .<BR> <BR>.