Factory Acceptance Test Research Articles

Evaluation of the functional acceptability of the ITER vacuum vessel

The International Thermonuclear Experimental Reactor (ITER) vacuum vessel (VV) is one of the critical components of the ITER tokamak fusion reactor. The first sector of the ITER VV was delivered to ITER Organization in 2020, and it is ready to assemble into the tokamak system. After manufacturing the ITER VV, an evaluation should ensure that the components are designed and manufactured to meet the functional requirements, such as vacuum leak tightness and structural integrity. The factory acceptance test (FAT) is essential for confirming acceptance in engineering and manufacturing. This paper introduces the engineering process and technical method of the FAT, which is applied explicitly to the first-of-a-kind ITER VV. We establish a visual inspection, pre-pumping assessment, pressure test, helium (vacuum) leak test, and final dimensional inspection for the FAT. The visual inspection revealed no blockages in the cooling channels of the double walls. The pre-pumping assessment conducted to check the vacuum level and residual gas condition, concluded that the inside of the VV was flawless and thus met the leak test requirements of 1 × 10−8 Pa m3 s−1. We confirmed no leakage or deformation through the pressure test under reduced pressure. The helium leak test demonstrated engineering soundness with leak tightness of 6.08 × 10−9 Pa m3 s−1, which is more stringent than the allowable limit. Furthermore, three-dimensional metrology was utilized to determine the as-built dimensions of the manufactured sector. Due to unavoidable weld deformation and tight tolerances, the as-built result does not perfectly meet the assigned tolerance level. Nevertheless, it can be considered as advanced information for assembly with in-vessel components and other sectors. Based on the conformance and suitability of the suggested FAT for the first ITER VV sector, we will determine the acceptability of the upcoming VV sectors, which will be manufactured and delivered by Korea shortly.

IOT Application For Conveyor Motor Load Current And Temperature Monitoring Device for Factory Acceptance Test in Industrial Application

In industrial application on machine manufacturer multinational company, especially on the conveyor manufacturing company, before delivering the conveyor to overseas customer, there are some regulations need to be complied to ensure the product quality is always good. The system to ensure the product quality before delivery is named by Factory Acceptance Test (FAT). The purpose of doing this is to gain the trust and satisfaction of the buyer company by ensuring the quality before delivery. To ensure the product quality, this device was designed following the customer check sheet and requirement by giving them reliable data of the load current on each line of the motor and the motor temperature. This device is consisting of WEMOS D1 mini as the main controller and an IoT device, thermocouple type K as a temperature sensor, MAX6675 as the driver of the thermocouple, SCT-013-005 as a split-core current sensor, Arduino Nano as the second controller, and LCD 2004 as a real-time display. The IoT Application for Conveyor Motor Load Current and Temperature Monitoring Device is successfully created with the output is a table of data and the line chart which consists of Load current on each phase (U1, V1, W1), the motor temperature, and the limitation of each data so the user is easier to determine the commissioning result of the Factory Acceptance Test.

Agile Leader’s Emotional Resilience and Their Digital Innovations and Business Transformations in a Workplace in Msme Sector (New Normal) to Mitigate COVID-19 & Its Successors

Theoretical Framework:During Covid-19, IndCzech invented numerous digital business transformations to maintain its sustainability in the global economy. IndCzech’s digital innovations (New normal) through online safety study workshops, business meetings, Factory Acceptance test, 3D Model review, Design review, Quality audit, project implementation and business transformation through work sharing possibilities in different places, integrated work culture, changes in native infrastructure have been analyzed the possibilities to implement. Based on the study, conceptual model proposes with Digital innovation, Business Transformation, Emotional Resilience, Challenges in workplace and Organizational growth. Design / Methodology/approach:129 agile leaders in the workplace in MSME sector data’s were collected through questionnaire and data analyzed with descriptive analysis, t-test, one way ANOVA, Correlation analysis, Regression analysis through SPSS and SEM model through SPSS AMOS. Findings:We found that Digital innovation and business transformation with emotional resilience are positively linked with organizational growth. Research, Practical & Social Implications:The purpose and implication of this empirical study to highlight on one’s agile leader’s emotional resilience in workplace (IndCzech) and their performance through digital innovations and business transformations and recommend government and MSME to improve organizational growth. Originality / Value:Agile leaders in Engineering service industry and their emotional resilience during pandemic period were not evaluated and it added value in the engineering service sector to mitigate their issues to have better business sustainability and organizational growth.

Producing high quality LTCC sensors for ITER in-vessel magnetic diagnostics

Inductive magnetic sensors inside the vacuum vessel of ITER tokamak are crucial for plasma operation, plasma control and physics studies. This set of sensors was designed based on the LTCC (Low Temperature Co-Fired Ceramic) technology in order to survive the hostile environment inside ITER vacuum vessel with restricted space, high vacuum, high heat load, and high radiation level. Some features were also integrated into the sensor design to address specific service loads, for instance, accidental superheated steam intrusion. As per ITERs diagnostics design, in total 300 LTCC magnetic sensors have been successfully produced according to the manufacture design and following the specifically developed fabrication process. Extensive quality control program and rigorous factory acceptance tests had been implemented throughout mass production (final 300 sensors). These practices ensured that the sensors were produced to the desired quality and with high reliability.

CRITICAL EQUIPMENT QUALIFICATION PARAMETERS AFFECTING THE HOMOGENIZATION PROCESS OF MEDICAL CANNABIS SEMI-SOLID PHARMACEUTICALS

The medical cannabis has been used for many of years for medicinal purpose, in different pharmaceuticalformulation, mostly as a magistral preparation for the relief of pain in cancer patients or chronical painful diseases.Over than 540 substances were found from which more than 100 that have been found to be cannabinoids due totheir similar chemical structure. The component with the most psychotropic action is Δ9 -tetrahydrocannabinol (Δ9 -THC), and the major non-psychoactive ingredient is cannabidiol (CBD). Δ9 -tetrahydrocannabinol firstly wasisolated in 1969 by Robert Mechoulm and Yechiel Gaoni. In 2003 World Health Organization put Δ9 -tetrahydrocannabinol in Schedule IV of the convention. Several therapeutic indications relate to the Δ9 -THC andCBD as analgesia, inflammatory and neurodegenerative diseases, and many other cases. In some studies, there arereported safety concerns about the registered side effects of Δ9 - THC as a psychoactive. For that reason, the legalusage of cannabis for medicinal purposes and for recreational use is regulated differently. The most relevantexplanation is related to the not enough sufficient results and data obtained from the pharmacokinetic studies andresearch in pharmacological behavior. Extracts of cannabis was used from many years ago. Nowadays inpharmaceutical industry as the development of technology there are many dosage forms in where extracts,cannabinoids, flower are used. Medicinal cannabis products can come in many different forms, including capsules,drops, chewable, creams, crystals, flower, lozenges, oil (most common), oro-mucosal sprays, tinctures and manymore. Also, there are synthetic analogs to nature cannabinoids in pharmaceutical market. In this study will bediscussed about production of semisolid pharmaceutical forms obtained from medical cannabis. They are producedin pharmaceutical grade equipment, high-pressure homogenizer mixer. In this study it will be discussed about theprocess of equipment qualification. Firstly, by the user requirement specification, design qualification protocol wasapproved. Then factory acceptance test was performed in production site of equipment and site acceptance test wasperformed in costumer’s site. Then installation qualification protocol was look through and then operationalqualification protocol also. All the qualification protocols were approved by both sides. In different qualificationprotocols, different tests were performed, and they are explained separately. During the qualification process, thereare considered some of the parameters which later during the production process can affect in the quality of finishedproducts. These parameters are called critical process parameters and accent will be put on this process parametersthat are with a critical effect on quality of the final products. This critical process parameters were considered andconcluded from qualification protocols where all the parameters that can affect quality of the product wereseparately examine.

Factory Acceptance Test and Delivery of the First Two Poloidal Field Coils to ITER Fusion Facility

Fusion for Energy (F4E), the European Domestic Agency for the International Thermonuclear Experimental Reactor (ITER), is responsible for the supply of 5 out of the 6 Poloidal Field (PF) Coils: PF2-PF6. One coil, PF1, is being manufactured by the Russian Federation Domestic Agency (RFDA). While the 10 m diameter PF6 was manufactured by the Institute of Plasma Physics Chinese Academy of Sciences (ASIPP) and tested in the cold test facility at Cadarache under a collaboration agreement with F4E; coils PF2-PF5 are currently being manufactured on site, close to the Tokamak building, their size ranging from 17 to 24 m diameter and weights from 200 to 400 T. This article describes the final acceptance tests performed on the coils PF5 and PF6, the testing setup, paying special attention to the tests performed before, after and during the cool-down at 80 K. The tests cover a wide range of aspects of the operation at cryogenic temperatures: ranging from the high voltage electrical insulation performance during the potential fault conditions during plasma operation, leak tightness under vacuum and pressure drop behavior of its hydraulic system during operation with forced flow helium. In addition, we will briefly introduce the results for the current center line (CCL) calculation obtained for PF5 and PF6.

Start of the ITER Central Solenoid Assembly

The Central Solenoid (CS) is a key element of the ITER Magnet system, including six identical coils, called modules, assembled together to form a 4 m outer diameter, 13 m high solenoid. It is a superconducting magnet, using a 45 kA Nb <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</sub> Sn conductor internally cooled by circulation of supercritical helium at 4.5 K with a peak field up to 13 T. It is enclosed inside a structure providing vertical pre-compression and mechanical support. Procurement of the components and the special assembly tooling of the ITER CS is the responsibility of US ITER, the ITER Domestic Agency of the USA, while the ITER Organization (IO) will carry out the assembly of these components. US ITER has awarded several contracts since 2011 to supply seven modules, including a spare, structure components, and the special tooling required for the CS pre-assembly. All deliveries are organized with the objective to start the CS assembly at IO site by the end 2021. IO has organized special process training and is now starting first phases of the assembly mostly focused on on-site assembly contractor. The paper describes the CS module manufacturing and delivery status, reports the special process final development and training, and assembly status. In particular, the outcomes from first modules factory acceptance tests results will be reported as well as the development and training for special activities to start the first module stacking. The bus bar joint and pre-compression processes with their related tooling qualifications will be detailed.

Concurrent 19. Presentation for: Overcoming COVID challenges in project execution – West Barracouta

Presented on Wednesday 18 May: Session 19 The West Barracouta (BTW) field, one of the largest proven undeveloped gas fields off the south-eastern Australian coast, commenced production in April 2021. The project was developed by Esso-BHP Gippsland Basin Joint Venture (GBJV), a 50–50 JV between ExxonMobil’s subsidiary Esso Australia and BHP Petroleum. The BTW gas field is situated ~6 km south west of the existing Barracouta gas field and platform, the first GBJV platform in Bass Strait. The BTW development involved drilling two subsea production wells, installation of umbilical controls from the existing platform and installation of a ~6 km subsea flowline to connect to existing gas pipeline via a hot tap. The BTW team successfully navigated through engineering, fabrication, testing, mobilisation of an international team and installation of the facilities in a COVID environment. The paper shares insights on how to: manage fabrication impacts with closures and restricted workhours to minimise disruption to the project; complete videoconference Hazid Identification Risk Assessment workshops across different geographical locations; develop and execute methodology for distributed component integrated testing with hardware located in different geographical locations; complete remote inspections, Factory Acceptance Tests (FAT)/verification using videoconference; complete enhanced familiarisation and testing activities at shorebase, prior to offshore installation, given restrictions in overseas travel/access to FAT locations; and safely manage installation personnel to ensure continuity of activities in a COVID environment, e.g. platform, installation vessel and diver COVID requirements. To access the presentation click the link on the right. To read the full paper click here

Испытания, проверки и диагностическое обеспечение судовых силовых трансформаторов среднего напряжения

Object and purpose of research. The study deals with the diagnostic Issues of ship MV transformers from factory acceptance tests to harbor trials. The purpose is to analyse the requirements and advanced diagnostic tools for status monitoring of ship power transformers, as well as to overview the Issues of electrodynamic withstand checks on transformers. Materials and methods. Stages (operations) are considered that ship power transformers undergo from the stage of factory acceptance tests to harbor trials. Requirements of ship transformers are analyzed. Foreign and Russian tools to check and measure power transformer parameters in industry as well as requirements for electrodynamic withstand testing are compared. Main results. It is shown that in view of high operational risks associated with accidents and failures of onboard transformers it is not enough to check transformer characteristics after transportation or storage (prior to onboard installation) for ensuring their high reliability. Functional analysis of foreign and Russian diagnostic instruments is presented, and vectors for improvement of the Russian tools are defined for the interest of shipbuilding industry. It is shown that the electric withstand tests are particularly important when new designs and technologies are used where reliable verification is impossible neither through calculations nor through modeling, while large safety margins are economically not viable. Conclusion. If some power units in the electric propulsion system (EPS) fail, extra costs would be spent on docking the vessel, dismounting of good equipment and hull structures to remove out-of-order equipment. Regulatory documenttation does not specify the scope of EPS components’ checkup after transportation or storage. Technical measures to ensure reliability of EPS elements include diagnostics of EPS elements prior to their installation on board the ship and during commissioning trials. Diagnostic tools of foreign make have more functional capabilities as compared to Russian instruments. Choice of specific devices and decisions to go for extra costs to further develop the Russian instruments should be based on feasibility studies. New regulations are required for testing rectifier transformers for electrodynamic withstand at short-circuit fault, as well as development and modernization of regional inter-industry shock test facilities.

Overcoming COVID challenges in project execution – West Barracouta

The West Barracouta (BTW) field, one of the largest proven undeveloped gas fields off the south-eastern Australian coast, commenced production in April 2021. The project was developed by Esso-BHP Gippsland Basin Joint Venture (GBJV), a 50–50 JV between ExxonMobil’s subsidiary Esso Australia and BHP Petroleum. The BTW gas field is situated ~6 km south west of the existing Barracouta gas field and platform, the first GBJV platform in Bass Strait. The BTW development involved drilling two subsea production wells, installation of umbilical controls from the existing platform and installation of a ~6 km subsea flowline to connect to existing gas pipeline via a hot tap. The BTW team successfully navigated through engineering, fabrication, testing, mobilisation of an international team and installation of the facilities in a COVID environment. The paper shares insights on how to: manage fabrication impacts with closures and restricted workhours to minimise disruption to the project; complete videoconference Hazid Identification Risk Assessment workshops across different geographical locations; develop and execute methodology for distributed component integrated testing with hardware located in different geographical locations; complete remote inspections, Factory Acceptance Tests (FAT)/verification using videoconference; complete enhanced familiarisation and testing activities at shorebase, prior to offshore installation, given restrictions in overseas travel/access to FAT locations; and safely manage installation personnel to ensure continuity of activities in a COVID environment, e.g. platform, installation vessel and diver COVID requirements.

RE-engineered factory acceptance testing under the new normal

PurposeFactory acceptance testing (FAT) in the construction industry has been severely hampered due to restrictions in cross-border travel resulting from the COVID-19 pandemic. Consequently, virtual FAT (vFAT) became a popular substitute for physical FAT. However, the credibility of vFAT is being questioned because it was adopted without much scrutiny. Hence, this study is aimed at investigating vFATs and re-engineering the FAT process to suit an effective vFAT environment.Design/methodology/approachA comprehensive literature search on FAT procedures was followed by two stages of expert interviews with eight leading subject experts and a case study. The findings were analysed using code-based content analysis on NVivo software.FindingsStrengths of vFATs include “reduction in cost and time consumed”, “flexibility for more participants” and “faster orders”. Most emphasized weaknesses include “lack of reliability” and “lack of technology transfer”. vFAT has mostly increased test reliability by “improving accessibility” and has decreased reliability by “restricting physical touch and feel observation of the equipment”. A four-step vFAT process was developed with a noteworthy additional step called “Pre-FAT Meeting”.Research limitations/implicationsThe scope of this study is limited to the Sri Lankan construction industry. Expansion of the geographical area of focus is recommended for future studies.Originality/valueThe findings of this study unveil a vFAT process, which is timely and beneficial for construction practitioners to optimize and enhance the effectiveness of vFATs which are currently conducted in a disarranged manner.

Investigating the Practical Applications of the Frequency Response of the Transformers Extracted Using the Lightning Impulse Test Results

The Lightning Impulse (LI) test is performed on newly manufactured power transformers as a routine Factory Acceptance Test (FAT). A well-known Marx Impulse Generator (MIG) is utilized in this test. The setting of the MIG can be changed to obtain standard LI wave shape. Since various power transformers may have windings with dissimilar designs, different MIG settings may be required for each transformer. The accurate computer simulation of the LI test circuit can give help in finding the optimum setting of the MIG. The Frequency Response (FR) of the power transformer impedance is required in such simulations. Similarly, the transformer FR is required in calculating the Transient Recovery Voltage (TRV) across the contacts of the Circuit Breakers (CB) in the case of the Transformer Limited Fault (TLF). The accurate calculation of such TRVs has a great importance in selecting the proper rating for CBs. The FR of the transformer can be measured directly with network analyzers or some other conventional test instruments. However, performing an additional test to obtain the transformer FR imposes extra cost and efforts. Alternatively, it can be achieved by using the routine LI test results which is readily available. Fortunately in both mentioned applications similar connections are required for transformer terminals. In this paper, the procedure to extract the transformer FR using the LI test results is presented. Then, the validity of such extracted FRs is investigated by comparing them with the ones measured by conventional test instruments. As an innovation, the extracted transformer FRs are used in the LI test circuit simulation and the accuracy of the method is examined by experimental works. Moreover, the application of the extracted FR in TLF TRV calculation is investigated as well. The validity of the all presented theoretical concepts are evaluated using the experimental test results on a real large power transformer.

Manufacturing, on-site installation and acceptance test activities of the MITICA vacuum vessel

The ITER Neutral Beam Test Facility, in an advanced stage of construction in Padova, includes the installation, tests, and optimization of the full prototype of the ITER Heating Neutral Beams injector (HNBs), named MITICA.The MITICA Neutral Beam Injector will host its main components in a SS304L vacuum vessel composed of two modules, connected between them on site: the Beam Source Vessel (cubic shape of 5 m side and 67 tons weight) containing the Beam Source and the Beam Line Vessel (section 4.5 m x 4.5 m, length 11 m and 76 tons weight) containing the Beam Line Components and the Cryopumps.The manufacturing is described, going through the FE analyses performed to assess the structural integrity, the materials selection, the welding qualifications, the implementation of the double barrier sealings and the control of the deformations. The Factory Acceptance Tests of the individual vessels are presented, including their Helium Leak Tests.The two vessels have been assembled on-site inside the MITICA bio-shield. The main outcomes of on-site final assembly and Site Acceptance Tests are described.Both the vessels have been detail designed, manufactured, installed and tested by De Pretto Industried, from Schio, (VI) Italy, supporting fusion technology’s applications from more than 50 years. The design and the technical support were provided by Consorzio RFXa, while the procurement was managed by Fusion For Energye.

Factory Acceptance Test of Static Flight Simulator Boeing 737 NG : Acquisition by Universiti Kuala Lumpur MIAT

Factory Acceptance Test of Static Flight Simulator Boeing 737 NG : Acquisition by Universiti Kuala Lumpur MIAT

Thermal Hydraulic Behavior of the First ITER CS Module

The ITER Central Solenoid (CS) modules are under fabrication by the US ITER organization and its subcontractors. US ITER will supply seven modules to the ITER Organization (IO), six of which will be assembled in a stack that forms the ITER Central Solenoid, the last one being spare. The first module, namely CSM 1 was manufactured by General Atomics (GA) and went through Factory Acceptance Tests (FAT) including high voltage testing, Paschen testing and then cold test at 4.5 K and up to 40.0 kA in order to demonstrate compliance with coil performance requirements. The paper focuses on the results of the first CS Module thermal hydraulic characterization without current (and field). Pressure drops, transit time, and thermal coupling between pancakes are presented. Analysis results and tests are also compared.

Ensuring the Low Vibration of Two-Pole Motors on Flexible Foundations: A Manufacturer-System Integrator Collaboration

Motor vibrations are tested as a part of factory acceptance testing (FAT), normally on a massive foundation. In two-pole motors, there are two main sources of vibration: rotor unbalance and electrical twice-line frequency excitation. Low vibration implies that the natural frequencies of the motor are separated from the corresponding excitation frequencies. Usually, if the site foundation is rigid, the vibration levels repeat FAT values with minor changes and are well within the initial limits for condition monitoring. However, if the foundation is flexible, the motor vibration may produce unexpected results. The aim of this article is to introduce a procedure to help ensure low vibration in site conditions in these cases. The procedure relies on early cooperation between the motor manufacturer and the system integrator based on the horizontal and vertical stiffness of the foundation. The most cost-effective solution can be reached by incorporating proper motor design features in conjunction with the design of the mounting base.

Subsea valves and actuators: a review of factory acceptance testing (FAT) and recommended improvements to achieve higher reliability

Oil exploration is constantly moving into deeper waters. The costs associated with downtime and the maintenance of facilities and equipment such as valves and actuators, collectively known as Operation Expenditures (OPEX), are very high in the offshore sector of the oil and gas industry, particularly the subsea sector, where water depth may reach 1–3 km. Subsea valve and actuator failures contribute to other negative consequences such as loss of production and Health Safety and Environment (HSE) issues such as environmental pollution as a result of oil spillage. Therefore, more reliable subsea equipment, including valves and actuators, is required in the industry. The reliability of valves and actuators is largely dependent on testing, specifically factory acceptance tests (FAT) and qualification test programs. This paper reviews twelve existing tests based on international standards such as the American Petroleum Standard (API) and the International Standardization for Organization (ISO) for valves, actuators and manual gear overrides. Different types of tests such as pressure tests, function tests and operation characterization tests are included in this review. Parameters such as test pressure and duration, test preparation and methods for test implementation are discussed. Eight additional tests are proposed in this paper on the basis of industrial experience to minimize the failure rate of expensive subsea equipment and to increase its reliability.

Dynamic performance testing and implementation for static var compensator controller via hardware-in-the-loop simulation under large-scale power system with real-time simulators

Recently, the number of electric-power facilities, including high-voltage direct current (HVDC) and flexible AC current transmission system (FACTS), has rapidly increased, owing to restrictions regarding the expansion of existing AC networks. Traditionally, a final site acceptance test (SAT) is conducted following controller performance verification in a factory acceptance test (FAT), based on an equivalent small network or voltage sources. Furthermore, several standards and guidelines related to the FAT and SAT of HVDC and FACTS have been published. Meanwhile, as the number of power electronic devices and the complexity of power systems increase, controller performance tests reflecting the wide area dynamic characteristics and control operation of adjacent devices should be required. However, a wide-area dynamic performance test (DPT) requires a large-scale real-time simulator and high-level operational technology. Owing to these difficulties, the definition, standard, procedure, and test protocol of hardware-in-the-loop simulation (HILS)-DPT, based on a large-scale power system, have not yet been established systematically, and only a few applications have been reported. This study aims to establish and propose procedures, a test protocol, and a methodology of HILS-DPT and large-scale power system modeling for testing. To this end, a case study was conducted to demonstrate the necessity of the DPT procedures and methodologies for the static VAR compensator controller installed at the Shin-Jecheon substation, an ongoing project undertaken the by Korea Electric Power Corporation, as of 2019.

Method and device to investigate the behavior of large rotors under continuously adjustable foundation stiffness

Vibration problems have been observed after the installation of large rotating machines, such as electric machines and generators and paper machine rolls. One possible cause can be differences between the foundation stiffness of the installation location and the testing platform where the machine is balanced and optimized. Foundation stiffness exerts a significant effect on the behavior of a rotating system, and the above-mentioned differences can cause major unexpected changes at natural frequencies, and thus resonance. The problem is typical for large machines due to their large mass, which leads to low natural frequencies. This induces situations where these natural frequencies coincide with rotor excitations and cause excessive vibration. This study presents a novel method and a device for adjusting the foundation stiffness of a large rotor system, consequently enabling the investigation of the effect of foundation stiffness on rotor behavior. However, this investigation is restricted to the horizontal axis. The characteristics of the device were analyzed together with a rotor behavior measurement that consisted of versatile measurements of acceleration, force and displacement in different locations inside the rotating system. The device in the presented form is best applied in R&amp;D laboratories and factory acceptance test cells, in which it can be used to predict the behavior of various rotors on different foundations. With the dynamic rotor behavior measurement performed with the device, the natural frequencies and their harmonic components can be presented as a function of foundation stiffness. This information can be used both to optimize rotor behavior in an installation location and also to improve the rotor system behavior in the design phase. The method and device presented in this study can be considered effective and successful, since the natural frequencies of the first two rotor modes could be manipulated freely at a range of 50-100 % by changing the stiffness.

Hydrostatic pressure test of the ITER lower port stub extension for factory acceptance

To check the structural integrity of the ITER Lower Port Stub Extension (LPSE), the hydrostatic pressure test has been conducted as part of the Factory Acceptance Test (FAT). The test is conducted as complying with the RCC-MR 2007 code and the French regulations of nuclear pressure equipment (ESPN) because the LPSE is classified as a nuclear pressure equipment. Because the LPSE is double wall structure with inner shell, ribs and outer shell, the inside coolant passage is filled with water for test. Pressurization is kept until 37.8 bar using the certified deionized water. During the test, before-after pressurization, and relief the pressure, the permanent deformation is checked. To verify permanent deformation, the actual displacement is measured as applying 3D metrology method using a laser tracker on the 18 locations of the LPSE, which are specified by the structural analysis results. As a result, there is no leakage on the welded and any interface area. Especially, after pressurization, the measured displacement is appeared similar to the numerically estimated value, the maximum is 0.39 mm. Finally, after relief the pressure, no permanent deformation is occurred, so that the structural integrity of the LPSE is confirmed through the selected hydrostatic pressure test.