In pursuance of Sub rule 1 of Rule 15 of the Bureau of Indian Standards Rules, 2018, the Bureau of Indian Standards

## Report on Amendment to Indian Standard IS 649:1997 **1. Executive Summary:** This report analyzes an amendment to the Indian Standard IS 649:1997, focusing on "Methods of Testing Steel Sheets for Magnetic Circuits of Power Electrical Apparatus." The amendment, designated as Amendment No. 09, was established in December 2022 and will remain in force until March 2023. This amendment likely aims to update or refine the testing methodologies outlined in the original standard, potentially impacting manufacturers and testers of steel sheets used in power electrical apparatus. The key finding is the limited timeframe for the validity of this amendment suggesting possible further revisions in the near future. **2. Introduction:** This report provides an overview of Amendment No. 09 to the Indian Standard IS 649:1997, based solely on the information presented in the provided policy text. The purpose is to inform stakeholders about the specific changes introduced by this amendment and its potential impact. **3. Policy Overview:** * **Original Policy:** IS 649:1997, "Methods of Testing Steel Sheets for Magnetic Circuits of Power Electrical Apparatus." * **Core Objective(s):** The core objective, inferred from the title, is to provide standardized methods for testing the properties of steel sheets intended for use in magnetic circuits found in power electrical apparatus. The overall objective of the amendment is to provide updated testing criteria for steel sheets. **4. Background and Rationale:** The rationale for this specific amendment (Amendment No. 09) to IS 649:1997 is not explicitly stated in the provided text. However, given the technical nature of the standard, the amendment likely addresses the need to: * Incorporate technological advancements in testing methods. * Rectify any ambiguities or inconsistencies identified in the original standard. * Ensure compliance with current industry best practices or regulatory requirements. * Address changes in the performance requirements for steel sheets in power electrical apparatus. **5. Key Provisions / Changes:** This section focuses specifically on the changes introduced by Amendment No. 09: * **Specific Part of Original Policy Changed:** The specific sections of IS 649:1997 affected by Amendment No. 09 are not detailed in the provided text. * **New Rule/Provision:** The provided text does not give specifics of the amendments made. It only indicates that Amendment No. 09 was established on December 2022. * **Difference/Effect of Change:** Due to the lack of specifics, the exact difference or effect of Amendment No. 09 on the testing methods remains unknown. It is important to note that the date till which the amendment remains in force is quite short (till March 2023), suggesting possible further revisions. **6. Target Audience and Stakeholders:** Based on the provided text, the target audience and stakeholders directly affected by this amendment include: * Manufacturers of steel sheets intended for use in magnetic circuits of power electrical apparatus. * Testing laboratories and personnel involved in evaluating the properties of these steel sheets. * Manufacturers of power electrical apparatus who utilize these steel sheets in their products. * Bureau of Indian Standards (BIS) and related regulatory bodies. **7. Implementation Aspects (Inferred):** * **Responsible Agency/Bodies:** Bureau of Indian Standards (BIS) is the responsible body for establishing and notifying the amendment. * **Timelines/Procedures:** The amendment was established in December 2022 and will remain in force until 08 March 2023. The procedures for implementing the amended testing methods would likely involve updating testing protocols and equipment calibration by relevant laboratories. **8. Expected Outcomes / Impact of Changes:** The intended outcome of Amendment No. 09, though not explicitly stated, is likely to: * Improve the accuracy and reliability of testing methods for steel sheets. * Ensure the quality and performance of steel sheets used in power electrical apparatus. * Promote standardization and consistency in the industry. * Update processes for testing steel sheets. The short timeframe suggests that there will be further revisions or updates after the validity period. **9. Conclusion:** Amendment No. 09 to Indian Standard IS 649:1997 represents an update to the testing methodologies for steel sheets used in power electrical apparatus. This amendment, established in December 2022 and remaining in force until March 2023, signifies the importance of maintaining current testing procedures. Stakeholders are encouraged to consult the full text of the amendment to understand the detailed changes and their implications fully. The short period suggests there will be further reviews or updates to the standard.

Key Entities Referenced