【 Weak current College 】 air separation, refrigeration equipment and equipment installation and acceptance (4)

The fifth section of the whole raw cooling test

The first section of this article is the reference 3.5.1 national current standards of the large and medium-sized air separation device performance test methods and commissioning experience, provides for participation in the test personnel should meet the requirements, in order to prevent a mistake.

Section 3.5.3, this article should bare cold test equipment to the requirements of technical documents, mainly to take into account the different technological process, debugger and methods vary, prevent blindness to experiment.

The provisions of this section 3.5.4 bar test records, not just to provide a basis for adjustment, it is for the engineering acceptance is accumulated information.

The first article provided in this section 3.5.5 in cold state under the fastening bolts are designed to prevent bolt loosening leak at low temperature.

No. 3.5.6 provision did not require stopping pressure check, but also in the actual construction of the Visual check situation to decide whether to stop pressure checks, aimed at requiring strict no leakage.

The sixth section filled with thermal insulation

Although this section 3.6.2 of the General provisions, but also very necessary. If fill Pearl powder, powder gate should device round steel network, preventing operators fall into the cooling Chamber, submerged in Pearl powder, casualty.

Section 3.6.3 bar fractionator in equipment, pipe inflatable, Keiki tube valve ventilation, thermal resistance power aims to observe loading insulation materials, whether or not to damage the equipment, in tanks, instrument systems and electrical systems.

Section VII of the noble gas extraction equipment

Section 3.7.4 article the provisions of this article with nitrogen gas tightness, or inert gases such as helium gas.

Section VIII expansion turbine

The first section 3.8.2 stressed by equipment technical documentation regulations to prevent blind disassembly and Assembly, to ensure the accuracy of the original are not affected.

Section 3.8.3 current domestic manufacturing factory production Expander, its structure is different, and varieties have also been updated, to vertically mounted requirements are also different, the emphasis should be consistent with the provisions of the technical file.

The fourth section 3.8.5, five being the highest speed test for the safe operation, to prevent personal or device.

The article emphasizes the importance for 3.8.6 good inspection records, so that there is a basis for future project acceptance.

The ninth section piston Expander

Section 3.9.1 bar piston Expander structure and piston-type compressors are basically the same, except for equipment technical documentation, also taking into account existing national standards of the compressor, fan, pump installation and acceptance of the relevant requirements.

Section x-high heart low temperature liquor pump

Section 3.10.1 article centrifugal low temperature liquor pump structure is relatively simple, but the operation of low-temperature condition has its peculiarities, solid pump Assembly, stressed that the test run should press equipment technical documentation.

The first article in this section 3.10.2 is debugging experience, italic amendments is to make it easier to exclude pump and piping in liquid gas to prevent cavitation phenomenon.

Section 3.10.3 of centrifugal low temperature liquor pump is strictly prohibited in the absence of liquid state under no-load, otherwise it will damage the machine.

Section XI to plug-and-low temperature liquor pump

Section 3.11.1 article construction experience, to prevent blindness, it is stressed that pumps former cleaning and degreasing should press equipment technical documentation.

Twelfth section back to thermal refrigerating

The first clause 3.12.2 regenerative refrigerator factory as a whole, the tank filled with nitrogen gas, it is not appropriate to simply take apart and wash.

Section 3.12.3 reference countries existing standards the regenerative chiller technical conditions ". Back to thermal refrigerating factory filled with 0.05MPa above dry inert gas installation, you should check or add an inert gas.

The first section to prevent waterways 3.12.4 in scale or rusty, it provides water quality requirements.

3.12.6 reference countries, existing standards in the regenerative chiller technical conditions ". Commissioning of the steps and methods and the technical requirements shall press equipment technical documentation.

Other equipment section XIII

The first section of this reference States 3.13.5 the existing supervisory procedures (pressure vessel safety technical supervision regulations).

Trial run of section XIV

The first article in this section is a reference to 3.14.1 many years practical experience in commissioning. Complete commissioning of air separation equipment is in high, medium and low pressure and low temperature operation, each operation requires accurate and do everything to prevent an explosion or fire incidents.

The first section of this article is the reference 3.14.3 national current standard (large and medium-sized air separation device performance test methods) of the regulations and combined with practical experience. Since the unit size, equipment manufacturing and engineering design, complete load test run to reach design and device performance requirements, production of qualified products throughout the entire process, some simple, time is short, some are very complex and lengthy. This specification is primarily a test installation of project quality is good or bad, it sets an air separation unit load test run should be responsible for the Organization, construction units installed units facilitate commissioning and installation is not possible to meet to discuss production, equipment performance, product quality and quantity are in line with the requirements, so that mounting units with construction units complete ASU commissioning until equipment condition stabilized, and then start the operating parameters for measurement, the measurement parameters of time, until the end of a 4h. In the load test run, such as discovery really belongs to install causes problems, should beInstall the unit in charge of processing. This project can do engineering acceptance procedures. Engineering acceptance, if indeed belong to the installation causes the problem, install the unit should be responsible for processing.

Chapter IV project acceptance

The first section in order to assure 4.0.1 and continuously improve the refrigeration, air separation equipment installation quality, increased acceptance of the provisions of this chapter projects. Specific equipment having a qualified system load test run before handling works acceptance procedures for the safe operation of the equipment.

The article emphasized 4.0.2 does not go through the engineering acceptance, the device cannot be used to prevent the accident.

The article sets out the engineering 4.0.3 acceptance of information content, as equipment installation engineering construction quality and acceptance.