{"id":114680,"date":"2024-10-19T02:56:17","date_gmt":"2024-10-19T02:56:17","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/astm-d4702-2003-3\/"},"modified":"2024-10-24T22:14:42","modified_gmt":"2024-10-24T22:14:42","slug":"astm-d4702-2003-3","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/astm\/astm-d4702-2003-3\/","title":{"rendered":"ASTM-D4702 2003"},"content":{"rendered":"

ASTM D4702-03a<\/h3>\n

Historical Standard: Standard Guide for Quality Management of Mechanical Coal Sampling Systems<\/h4>\n
\n

ASTM D4702<\/h4>\n

Scope<\/strong><\/p>\n

1.1 This guide is applicable to cross-belt, falling stream, and auger sampling systems.<\/p>\n

1.2 Spacing of increments pertains to the kind of interval between increments. Intervals can be defined in quantitative terms, such as units of time or mass, or in terms of position over the lot.<\/p>\n

1.2.1 Spacing of Increments for Cross-Belt and Falling Stream Samplers<\/i>\u2014Cross-belt and falling stream type mechanical sampling systems take increments based on time, either at fixed time intervals or at random times during a fixed time strata. Some crosscut samplers can take increments based on equal mass of coal sampled as determined by scales. The sections of this guide that pertain to cross-belt and falling stream samplers describe procedures for only time-based sampling systems. This time-based inspection guideline will satisfy most criteria for mass-based or combination mass-based and time-based sampling systems. If there are items that are not covered, the inspector should refer to the manufacturer’s literature.<\/p>\n

1.2.2 Spacing of Increments for Auger Sampling<\/i>\u2014The spacing of increments collected by auger sampling systems is defined in terms of position over the lot.<\/p>\n

1.3 It is essential that the inspector have the documentation listed in Section 2 of this guide when conducting an inspection.<\/p>\n

1.4 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.<\/p>\n

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.<\/i> For a specific hazard statement, see Section 5.<\/p>\n

Keywords<\/strong><\/p>\n

coal sampling; inspection; mechanical sampling; sampling systems<\/p>\n

ICS Code<\/strong><\/p>\n

ICS Number Code 75.160.10 (Solid fuels)<\/p>\n

DOI:<\/strong> 10.1520\/D4702-03A<\/p>\n<\/div>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
1<\/td>\nScope
Terminology
Significance and Use <\/td>\n<\/tr>\n
2<\/td>\nAssessing the Organization and Planning of Sampling Operations
General Observations of Coal Stream Variability as Related to Primary Increment Collection by Crosscut and Sweep-Arm Samplers
General Observations of Auger Placement
Inspection of the Primary Sampler in Time-Based Cross-Belt or Falling Stream Sampling Systems <\/td>\n<\/tr>\n
3<\/td>\nInspection of Augers
Criteria for Secondary Sampler Operation
Criteria for Tertiary or Final Sampler Operation <\/td>\n<\/tr>\n
4<\/td>\nCautions for Collecting Final Sample
General Considerations to be Observed by the Inspector
Keywords
X1. TYPICAL MECHANICAL COAL SAMPLER CHECKLIST <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

D4702-03a Standard Guide for Quality Management of Mechanical Coal Sampling Systems<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
ASTM<\/b><\/a><\/td>\n2003<\/td>\n6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":114681,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[1073,2637],"product_tag":[],"class_list":{"0":"post-114680","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-75-160-10","7":"product_cat-astm","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/114680","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/114681"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=114680"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=114680"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=114680"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}