BS ISO 13909-3:2016规定了固定批次煤的机械取样程序， 例如，从货车、驳船、船只和库存中。当需要时，应使用这些程序 根据ISO 13909-2，在装货或卸货期间不可能对批次进行取样。程序 ISO 13909-4中给出了样品制备。ISO 13909的本部分适用于从固定煤炭批次中进行机械取样，以获得样品，从中可以根据ISO 13909中规定的要求和建议制备用于测定水分和进行一般分析（包括物理和化学试验）的试样- 4.在ISO 13909的这一部分中，给出了设计抽样方案的原则和程序， 以及典型的应用实例；此外，还提供了在 描述了不同的采样情况。所描述的方法仅限于所使用的方法 可以进行偏差测试。交叉引用:ISO 13909-1ISO 13909-2ISO 13909-4ISO 13909-7ISO 13909-8购买本文件时提供的所有当前修订版均包含在购买本文件中。

BS ISO 13909-3:2016 specifies procedures for the mechanical sampling of coal from stationary lots, for example, from wagons, barges, ships and stockpiles. These procedures are to be used when it is not possible to sample the lots during loading or discharge according to ISO 13909-2. Procedures for sample preparation are given in ISO 13909-4.This part of ISO 13909 is applicable to mechanical sampling from stationary coal lots, to obtain samples from which test samples for the determination of moisture, and for general analysis including physical and chemical tests, can be prepared in accordance with the requirements and recommendations set out in ISO 13909-4.In this part of ISO 13909, the principles and procedures for designing a sampling scheme are given, together with typical examples of applications; in addition, practices for the execution of sampling in different sampling situations are described. The methods described are limited to those on which it is possible to conduct a test for bias.Cross References:ISO 13909-1ISO 13909-2ISO 13909-4ISO 13909-7ISO 13909-8All current amendments available at time of purchase are included with the purchase of this document.