JCSS accredited calibration laboratoryThe designated manufacturing business operatorA standard microphoneThe structure and dimensions of a standard microphone are standardized by IEC and JIS. Its sensitivity is calibrated to a high degree of accuracy. This is used as a standard for measuring sound pressure.JCSS accredited calibration laboratoryJCSS is short for Japan Calibration Service System, a system of registry for laboratories with technical capabilities sufficient to function as calibration laboratories and capable of assuring traceability to National Measurement Standards of Japan. To register, a laboratory must pass a test administered by the accreditation center of NITE (National Institute for Technology and Evaluation). Once registered, the laboratory is qualified to issue a JCSS calibration certificates. Furthermore, it can also issue a calibration certificate with the JCSS symbol accompanied by ILAC-MRA mark, which makes the test results valid internationally.Designated manufacturing business operatorThis qualification allows a business operator designated as such by the Minister of Economy, Trade and Industry to perform in-house inspections at their own factory or at business locations equivalent to those carried out by the public verification organizations of the prefecture when manufacturing specific measuring instruments that have received type approval. Products that pass such in-house inspections are considered to have passed official verification tests and are permitted to bear the Standards Conformity Mark. “It took some time to create the system, from drafting the proposal to informing the relevant members of the team. But this is a certifica-tion our customers have long wanted for us to have. We should note that we’re not registered with the JCSS as a whole company, but only under the name of the Quality Assurance Section. This inevitably heightens the motivation of everyone in the Quality Assurance Sec-tion, whose first job is quality management.”Stipulated in the Measurement Act, the designated manufacturing business operator system allows business operators to attach the Stan-dards Conformity Mark to their own products (in our case, sound lev-el meters and vibration level meters) that have passed their in-house inspection upon shipment. This certifies that the products are qualified for use for transaction/certification purposes (i.e., for public records that can be used as evidence in court). Generally, permission to attach the mark to a product must be granted after passing a verification test performed at a designated test organization. The business operator is allowed to carry out independent verification testing only if the prefec-tural government acknowledges that the business operator maintains the proper measuring environment and appropriately manages and maintains its measuring instruments. As of June 15, 2023, Rion is the only manufacturer in Tokyo qualified to carry out verification tests for sound level meters and vibration level meters.“Once a year, an official from the Tokyo Metropolitan Govern-ment visits to perform an on-site inspection to check whether our in-house organization and measuring environment is up to standards and to confirm that the verification tests are man-aged according to laws and regulations. They inspect the actual site where the measuring tests are done, check the documentation, and even ask the chiefs of related depart-ments for explanations.”Makoto YoshidaQuality Assurance Section, Environmental Instruments Di-vision. After joining Rion in 1994, he spent about seven years in the Development Department developing medical instruments. He worked on designing and developing a hearing assistance system for schools for the hearing im-paired since 2001 before being transferred to the Sales Department, where he worked on a team for system de-sign and related work to support sales activities. He has been assigned to his present duties (JCSS calibration and management of measuring instruments) since 2006.Tatsuya ShimosakaQuality Assurance Section, Environmental Instruments Di-vision. After joining Rion in 2008 fresh out of school, he was assigned to the Manufacturing Division, where he spent six years learning monozukuri (manufacturing). In 2015, he transitioned to the Quality Assurance Section, where he currently manages product compliance with laws and regulations and provides support for JCSS cali-bration clerical tasks.9Proof of performance as a calibration laboratory of-fering traceable compliance with national measure-ment standards and high technical capabilitiesThe Quality Assurance Section is accredited by JCSS to calibrate sound level meters, acoustic calibration equipment, microphones for measuring applications, and vibration accelerometers. The hurdles that must be cleared to receive this accreditation are lofty. A laboratory must improve its calibration environment and technologies, in addi-tion to establishing a quality management system in accordance with ISO/IEC. And gaining this accreditation is not a one-time task. Rough-ly every five years, the laboratory must update its environment in accordance with the latest revisions of the standards; maintaining the status comes with significant burdens. For example, in response to the major revisions of the standards in 2017, virtually all in-house rules associated with JCSS accreditation had to be rewritten.Rion is the sole manufacturer in Tokyo permitted to apply the Standard Conformity Mark to sound level meters and vibration level meters.
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