作为一名优秀的翻译请你用正式的表达用英语翻译以下合同内容注意语言的规范性和正确性并按照原文格式进行排版。MSA管理规范 1目的 规定测量系统分析和评价的方法以及明确测量系统的接收准则从而确保测量数据的有效性。 2范围 控制计划中规定使用的测量系统并且离最近一次MSA评价六个月以上者。 3权责 由质量部负责测量系统分析。 4定义 41 MSA：测量系统分析； 42 EV：重复性——设备变差； 43

MSA Management Specifications

1. Purpose This document establishes the methods for analyzing and evaluating measurement systems, as well as defining acceptance criteria for measurement systems to ensure the validity of measurement data.

2. Scope This applies to measurement systems used in the control plan that have not undergone MSA evaluation for over six months.

3. Responsibilities The Quality Department is responsible for conducting measurement system analysis.

4. Definitions 4.1 MSA: Measurement System Analysis 4.2 EV: Equipment Variation - Repeatability 4.3 AV: Appraiser Variation - Reproducibility 4.4 GRR: Gauge Repeatability and Reproducibility 4.5 PV: Part Variation 4.6 TV: Total Variation 4.7 ndc: Measurement System Resolution

5. Activities 5.1 Measurement System Analysis using Mean and Range Method: 5.1.1 The company's measurement systems are listed in the "Monitoring Resources Ledger." 5.1.2 The Mean and Range method is used for measurement system analysis. 5.1.3 Specific steps: 5.1.3.1 Selection of measurement system: The Quality Department selects the measurement system based on the Measurement System Analysis Plan and the control plan. The minimum reading should be 1/10 of the tolerance range. If the measuring instrument cannot meet this requirement, it should at least have the same minimum reading as the tolerance range. 5.1.3.2 Selection of appraisers: The Quality Department selects 2-3 individuals who regularly operate the measuring instrument for measurement. Additionally, personnel responsible for MSA research record and calculate the evaluations. 5.1.3.3 Selection of measurement parameters: Fill in the "Gauge Repeatability and Reproducibility Report" form. 5.1.3.4 Selection of test parts: Researchers and appraisers together select 10 parts that represent the entire production process (sometimes selecting one part per day for 10 consecutive days). Then, the researcher assigns numbers from 1 to 10 to the parts without the appraisers seeing these numbers. Each part should be measured 2-3 times. 5.1.3.5 Appraiser A randomly measures 10 parts, and the researcher records the data in the first row of the "Measurement System Repeatability and Reproducibility Analysis." Then, appraisers B and C measure the same 10 parts without seeing each other's data, and the researcher records the results in the 6th and 11th rows of the "Gauge Repeatability and Reproducibility Data Collection Table." 5.1.3.6 Repeat the above steps with different random measurement sequences and fill in the data in the 2nd, 7th, and 12th rows. If three trials are required, repeat the process and record the data in the 3rd, 8th, and 13th rows. 5.1.3.7 If appraisers work different shifts, a substitution method can be used. Appraiser A measures 10 parts, and the results are recorded in the first row of the "Gauge Repeatability and Reproducibility Analysis." Then, appraiser A measures the parts again in different sequences, and the researcher records the results in the 2nd and 3rd rows. The same process is followed for appraisers B and C. 5.1.4 Calculate the "Gauge Repeatability and Reproducibility Analysis" according to the provided format, and fill in the corresponding data for DIFF and Rp in the "Gauge Repeatability and Reproducibility Report." 5.1.5 Researchers calculate the percentages of EV, AV, and GRR. 5.1.6 Acceptance criteria for GRR: 5.1.6.1 %GRR < 10%: Measurement system is acceptable. 5.1.6.2 10% ≤ %GRR < 30%: Improvement of the measurement system should be considered based on the importance, cost, maintenance expenses, and customer complaints. 5.1.6.3 %GRR ≥ 30%: The measurement system requires improvement. 5.1.6.4 ndc ≥ 5. 5.1.7 Root cause analysis: 5.1.7.1 If EV is greater than AV, the possible causes may include: (1) Instrument maintenance is needed; (2) Gauge redesign is required to improve accuracy; (3) Clamping and inspection points need improvement; (4) Large part-to-part variation exists. 5.1.7.2 If AV is greater than EV, the possible causes may include: (1) Appraisers need better training on how to use measuring instruments and read measurements; (2) Scale markings on gauges are unclear; (3) Appraisers need fixtures to improve consistency in using gauges