ANALISIS PENGENDALIAN KUALITAS PRODUK DI CV. BILO DATANG

The purpose of this study is to analyze the level and the type of damage in the production process CV.Bilo Datang and the solutions of quality control are carried out. The method used in this research is quantitative descriptive analysis method using Pareto diagram analysis tools and Cause-effect diagrams. The results of the study showed that the quality control conducted by the company was less than optimal, especially in controlling for half defective products. This is due to several things such as lack of employee skills and maintenance of machinery and equipment that is less than the maximum resulting in the product being half defective. Although in the amount of damage is greater than half defective products but there are also products damaged due to pest attack on wood. The solution provided by the researcher is also appropriate to the stage of the damage that occurred. Keywords: Product Quality Control, Level of damage and Type of damage

Study on the Necessity of Establishing Customized Limits for the Daily QA Program Performed With Daily QA3

Background: Due to no corresponding action limits for some new daily QA items , limits of the monthly or annual QA procedures have to be used for daily QA program at present. The general purpose of this paper is to discuss whether it is feasible to do so.Methods: 3 groups daily quality control process during 2017-2019 performed with Daily QA3 were analyzed using SPC. In Calculation of capability indices for output, daily QA tolerance ±3% in the TG142 was used as specification limit, while for flatness and symmetry, annual QA tolerance ±1% was used. An appropriate number of data points were analyzed , capability indices (Cp, Cpk, Cpm and Cpmk) were calculated, and customized tolerance and action limits were established for each process. Meanwhile, the locations of the UCL、CL、LCL in I-MR charts of daily QA performed by 5 therapists in turns were compared with that of daily QA performed by only one physicist during the same period . Results: Process capability indices of output were all ≥1, some were even up to 3-4. While, for symmetry, most of them failed to meet the requirements. For the same daily QA item, the calculated customized limit of different quality control processes were quite different. For the daily QA performed with only one physicist, the range of UCL and LCL was smaller or the central line was closer to the target value 0 in I-MR charts.Conclusions: It is necessary to establish customized limits for daily QA program performed with Daily QA3, because customized limits and improved operation constancy both can improve the daily quality control level.

Analysis on the Commercial Grade Items Dedication of Emergency Diesel Generator Set Level Transmitter

Commercial grade items dedication provides an in-depth analysis of key characteristics of commercial grade items. Technical acceptance of commercial grade items dedication is targeted. Commercial grade items dedication can improve the quality control level of nuclear power plant equipment and effectively compensate for the deficiencies in the process control and quality uncertainties. This article sorts out the differences between ISO9001 and HAF003 and RCC-E requirements, and analyzes the document system, work process, key characteristics, acceptance methods and evaluation process of the commercial grade items dedication of the emergency diesel generator set liquid level transmitter.

Discussion on the main points of construction quality control in civil engineering

<p>With the improvement of comprehensive development level, civil engineering is perceived a promoted position in the development of the whole market economy in China. Civil engineering is an important link for building construction. Good civil engineering construction management ensures the overall engineering quality control level. Through the reasonable analysis of construction standards, construction contents and construction steps of civil engineering, the actual construction control and management methods of civil engineering are defined, the effective control scheme of civil engineering quality is analyzed, and reasonable suggestions for solving problems are put forward, so as to realize effective control and management of civil engineering construction quality in China. This paper makes an analysis of the actual construction control and fully studies the measures and schemes of the actual construction quality control to improve the management efficiency of the construction quality control of civil engineering.</p>

Vapor-phase migration of DiBP and DBP through barrier-coated paperboard: Correlation between a permeation test method and simulated migration

The aim of the study was to construct a correlation between a permeation test method that simulates the migration of organic vapors and the actual migration of chemical contaminants from barrier-coated paperboard packaging. A correlation of this nature would enable manufacturers of barrier-coated paperboard to estimate the barrier properties of paperboard on a quality control level. A direct correlation was not plausible because the migration mechanisms that apply to the permeation test method and the actual migration differ. However, an indirect correlation was established. The permeation test method gave an indication of film integrity, whereas the actual migration was found to be rather dependent on coating weight. The spiking method, testing temperature, and vapor pressure of the contaminants were found to be variables directly affecting the validity of the correlation between permeation and migration methods.