ASTM D6883-04 (2012) rus PDF

Full title and description

Standard Practice for Manual Sampling of Stationary Coal from Railroad Cars, Barges, Trucks, or Stockpiles — ASTM D6883-04(2012). This practice describes procedures for obtaining manual gross samples from beneath the exposed surface of coal in railroad cars, barges, trucks, or stockpiles for subsequent laboratory preparation and analysis.

Abstract

This standard provides guidance on manual sampling beneath the exposed surface to a depth (approximately 24 in./61 cm) intended to reduce the influence of surface drying and oxidation. It is intended for use when probability-based sampling methods are not available and emphasizes that samples collected by this practice do not meet the precision requirements of probability sampling and should be used only with prior agreement among interested parties.

General information

• Status: Withdrawn / reapproved historic edition (replaced in later revisions).
• Publication date: Current listed approval/reapproval: November 1, 2012 (designation shown as D6883‑04(2012)).
• Publisher: ASTM International.
• ICS / categories: Coal and coke / solid fuels (ICS code area for coals).
• Edition / version: D6883‑04 as reapproved 2012 (often cited as D6883‑04(2012)).
• Number of pages: 5 pages (historic edition).

Scope

This practice covers manual procedures for obtaining a gross sample from beneath the surface layer of coal in stationary conveyances or stockpiles to provide material that can be crushed, split, and prepared for laboratory analysis. It specifies sampling to a depth intended to avoid surface-altered material, notes limitations with respect to statistical representativeness, and requires prior agreement among interested parties on lot size, increment weight/number, and safety precautions.

Key topics and requirements

• Identification of sampling locations and lot definition prior to sampling.
• Collection of increments from beneath the exposed surface (approx. 61 cm / 24 in.).
• Guidance on increment weight and number (referencing Practice D2234/D2234M for increment sizing).
• Instructions that gross samples are to be crushed, divided, and prepared in accordance with laboratory preparation practices.
• Clear statement of limitations: not a probability sampling method and not suitable where statistical precision estimates are required.
• Safety and site-condition considerations; user responsibility to establish appropriate safety practices.

Typical use and users

Used by coal producers, traders, quality control laboratories, freight handlers, and third‑party inspectors when manual sampling of stationary coal consignments is required and mechanical/probability sampling is not feasible. Typical situations include spot checks, receipt inspections, or circumstances where access or equipment constraints preclude other sampling methods.

Related standards

References and related ASTM practices frequently cited with D6883 include Practice D2234/D2234M (increment collection classification and increment weights), Practice D2013/D2013M (preparation of coal samples for analysis), and other coal sampling and analysis standards. Later revisions of this practice are published as D6883 (subsequent editions such as D6883‑17 and later).

Keywords

manual sampling, coal sampling, railroad cars, barges, trucks, stockpiles, gross sample, increment, D6883, coal quality, sampling practice.

FAQ

Q: What is this standard?

A: ASTM D6883‑04(2012) is a practice describing manual procedures for collecting gross samples of stationary coal from railroad cars, barges, trucks, or stockpiles for laboratory preparation and quality estimation.

Q: What does it cover?

A: It covers how to obtain increments from beneath the exposed surface to a recommended depth (about 24 in./61 cm), how to agree lot size and increment collection details, and the limitations of the method (not probability sampling).

Q: Who typically uses it?

A: Coal industry personnel, laboratory analysts, inspectors, and buyers or sellers who need to collect manual gross samples when mechanical or probability sampling is not possible.

Q: Is it current or superseded?

A: The D6883‑04(2012) reapproval is a historic edition; the practice has later revisions (for example, D6883‑17 and subsequently updated editions). Users should consult the latest D6883 edition for current requirements.

Q: Is it part of a series?

A: Yes — D6883 sits within ASTM Committee D05 (Coal and Coke) sampling practices and is used in conjunction with related practices such as D2234/D2234M and D2013/D2013M for increment classification and sample preparation.

Q: What are the key keywords?

A: Manual sampling, coal, railroad cars, barges, stockpiles, increment, gross sample, D6883.