Medha follows Quality Management System as per ISO 9001:2008 standard and IRIS Business Management System, and certified by DNV-GL Management system. Our ISO 9001:2008 QMS certification is accredited to NABCB. Medha established a reputation for quality products and excellent after sales service. Medha has also graduated to CMMI (Capability Maturity Model Integration) Level 3 certification and is currently working towards CMMI Level 5 certification by further improving its processes. CMMI is a process improvement maturity model for the development of products and services. At Medha, we use CMMI to address product development and maintenance activities that cover product life cycle from conception through delivery and maintenance.
Since Medha’s inception, our quality policy has been, 'To provide products meeting customer satisfaction with excellence in performance and cost effectiveness through a continually improving Quality Management System'. Some important steps Medha takes to ensure high standards of quality for all the products are described below:
Reviews are conducted at various stages of design and development activities. Design validation reports, development-testing reports, qualification testing reports, field trials performance reports, field failure analysis reports, improvements based on failure analysis and drawings and documentation prepared for production form the inputs for design reviews.
The inward inspection reports, in-process inspection reports, final inspection reports, customer complaints and reports from Service Engineers are reviewed periodically during non-conformance reviews. Major or repetitive non-conformances are identified from these reports for detailed investigation and analysis. Corrective actions are framed out based on the results of these investigations and analysis and necessary process and design improvements are carried out based on these reports.
Calibration of Test Equipment:
All the test and measuring equipment, gauges, jigs and fixtures used at various stages of inspections and testing are periodically calibrated. An internal calibration department is responsible for maintaining records of all tests and measuring equipment, recalling the equipment when they are due for calibration and calibrating the equipment. Wherever internal facilities do not meet the requirement, calibration is done externally at approved laboratories, where calibration facilities traceable to national standards are available.
The performance of suppliers of various raw materials and components and subcontractors is assessed periodically and vendor rating is carried out based on quality, delivery and pricing criteria. For this purpose various parameters of each purchase order and each shipment are tracked and vendor rating is assessed at regular intervals. Vendor rating is an important input for deciding the placement of orders on both suppliers and subcontractors.
A dedicated training department is responsible for training R&D Engineers, Service Engineers, Customer Support personnel and end customers. Dedicated areas in both R&D Centre and Manufacturing Unit are available for the purpose of various training needs. Service Engineers are continuously trained to keep them up to date on the products they are responsible for and improve their skills and knowledge. They are also cross trained on other products to increase their knowledge on the range of products Medha offers. Both class room and practical training sessions are conducted for all customer representatives who are involved in the maintenance of the equipment. All Service Engineers are required to be certified from time to time.
Quality audits form an important part of Quality Assurance program. Performance of quality functions at various departments, their documents and quality records are audited periodically as per ISO 9001:2000 requirements (typically every 3-6 months). All non-conformances are recorded and corrective action plans are drawn. Implementation of corrective actions also forms one of the inputs for future audits. Medha’s management periodically reviews the reports during management reviews. Apart from monitoring the performance, this helps in improving the quality system as a whole.
Almost 100% of the components are tested for specified performance even though they are purchased only from authorised distributors. Passive burn-in tests are conducted on all electronic components to eliminate infant failures. Active burn-in tests at enhanced power levels are conducted on all power devices in custom made test jigs and variations in certain parameters are recorded to judge the life expectancy of the components.
Inspection and Testing:
The equipment undergoes inspection for Quality Assurance in various stages of production. Stage inspections and sub-assembly level tests are conducted to monitor various parameters. Random sampling and SQC techniques are used to ensure consistency of the production process. Detailed inspection and performance tests are conducted on the final products before dispatch, to ensure consistent quality levels. At periodic intervals, sample units are picked randomly and sent to Electronics Test and Development Centre, an accredited laboratory run by the government, for conducting environmental and enhanced life tests.
All the data collected through internal audits, corrective actions, preventive actions, management reviews, customer complaints, field failures etc., is monitored, analysed and targets are set for bringing continual improvement in the quality management system of products and customer services. Employees are also urged to come up with different ideas for improving quality and reducing cost (material or labour) of various manufactured components. Ideas are evaluated on these criteria and are adopted as part of the continual improvement program. Employees who come up with ideas with substantial quality improvement or cost reduction are given appreciation letters and are awarded prize money.