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  2. IEC 61355 - Wikipedia

    en.wikipedia.org/wiki/IEC_61355

    A public access database IEC 61355 DB [3] is available in order to facilitate the individuation of the correct code to be applied to a document The document kind classification code consists of three code-letters A1, A2, A3, with the prefix "&". A1 Letter code for technical area class; A2 Letter code for main class; A3 Letter code for sub-class

  3. Ready-mix concrete - Wikipedia

    en.wikipedia.org/wiki/Ready-mix_concrete

    Batching and mixing is done under controlled conditions. In the UK, ready-mixed concrete is specified either informally, by constituent weight or volume (1-2-4 or 1-3-6 being common mixes) or using the formal specification standards of the European standard EN 206+ A1, which is supplemented in the UK by BS 8500. This allows the customer to ...

  4. Concrete plant - Wikipedia

    en.wikipedia.org/wiki/Concrete_plant

    A concrete plant, also known as a batch plant or batching plant or a concrete batching plant, is equipment that combines various ingredients to form concrete. Some of these inputs include water , air, admixtures , sand , aggregate ( rocks , gravel , etc.), fly ash , silica fume , slag , and cement .

  5. Batch production - Wikipedia

    en.wikipedia.org/wiki/Batch_production

    A batch can go through a series of steps in a large manufacturing process to make the final desired product. [ 1 ] [ 2 ] Batch production is used for many types of manufacturing that may need smaller amounts of production at a time to ensure specific quality standards or changes in the process.

  6. National Accreditation Board for Testing and Calibration ...

    en.wikipedia.org/wiki/National_Accreditation...

    NABL is a Full member (ILAC MRA signatory) to ILAC [5] as well as APAC Mutual Recognition Arrangements (MRA), [6] based on mutual evaluation and acceptance of other MRA Partner laboratory accreditation systems. Such international arrangements facilitate acceptance of test / calibration results between countries to which MRA partners represent.

  7. ISO/IEC 17025 - Wikipedia

    en.wikipedia.org/wiki/ISO/IEC_17025

    ISO/IEC 17025 General requirements for the competence of testing and calibration laboratories is the main standard used by testing and calibration laboratories. In most countries, ISO/IEC 17025 is the standard for which most labs must hold accreditation in order to be deemed technically competent.

  8. Scheduling (production processes) - Wikipedia

    en.wikipedia.org/wiki/Scheduling_(production...

    Scheduling is used to allocate plant and machinery resources, plan human resources, plan production processes and purchase materials. It is an important tool for manufacturing and engineering, where it can have a major impact on the productivity of a process. In manufacturing, the purpose of scheduling is to keep due dates of customers and then ...

  9. Verification and validation - Wikipedia

    en.wikipedia.org/wiki/Verification_and_validation

    Verification is intended to check that a product, service, or system meets a set of design specifications. [6] [7] In the development phase, verification procedures involve performing special tests to model or simulate a portion, or the entirety, of a product, service, or system, then performing a review or analysis of the modeling results.