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JC/T 620-2021 English PDF (JCT620-2009, JCT620-1996)

JC/T 620-2021_English: PDF (JC/T620-2021)
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
JC/T 620-2021English125 Add to Cart 0--9 seconds. Auto-delivery Sampling method for lime Valid JC/T 620-2021
JC/T 620-2009English279 Add to Cart 3 days [Need to translate] Sampling method of lime Obsolete JC/T 620-2009
JC/T 620-1996English239 Add to Cart 2 days [Need to translate] Sampling method for lime. Obsolete JC/T 620-1996


BASIC DATA
Standard ID JC/T 620-2021 (JC/T620-2021)
Description (Translated English) Sampling method for lime
Sector / Industry Building Materials Industry Standard (Recommended)
Word Count Estimation 7,743
Date of Issue 2021-03-05
Date of Implementation 2021-07-01
Older Standard (superseded by this standard) JC/T 620-2009

BASIC DATA
Standard ID JC/T 620-2009 (JC/T620-2009)
Description (Translated English) Sampling method of lime
Sector / Industry Building Materials Industry Standard (Recommended)
Classification of Chinese Standard Q27
Classification of International Standard 91.100.10
Word Count Estimation 7,718
Date of Issue 2009-12-04
Date of Implementation 2010-06-01
Older Standard (superseded by this standard) JC/T 620-1996
Quoted Standard JC/T 619
Drafting Organization Henan Building Materials Research and Design Institute Co., Ltd.
Administrative Organization National wall, roof and road construction materials used Standardization Technical Committee
Regulation (derived from) ?Industry-Science (2009) No.66; Industry Standard Filing Announcement 2010 No.3 (Total No.123)
Summary This standard specifies the lime sample batch, tools, locations, site, quantitative methods and samples, preparation, packaging, storage and so on.

BASIC DATA
Standard ID JC/T 620-1996 (JC/T620-1996)
Description (Translated English) Sampling method for lime.
Sector / Industry Building Materials Industry Standard (Recommended)
Classification of Chinese Standard Q27
Classification of International Standard 91.100.10
Word Count Estimation 6,650
Date of Issue 1996/3/1
Date of Implementation 1996/8/1
Regulation (derived from) Industry-Science [2009] No. 66; Industry Standard Filing Notice 2010 No. 3 (Overall No. 123)


JC/T 620-2021 JC BUILDING INDUSTRY STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 91.100.10 CCS Q 27 Replacing JC/T 620-2009 Sampling method for lime ISSUED ON: MARCH 05, 2021 IMPLEMENTED ON: JULY 01, 2021 Issued by: Ministry of Industry and Information Technology of PRC Table of Contents Foreword ... 3  1 Scope ... 5  2 Normative references ... 5  3 Terms and definitions ... 5  4 Sampling tools ... 6  5 Sampling site and sampling location ... 6  6 Total sampling ... 7  7 Sampling steps ... 7  8 Sample preparation ... 9  9 Packaging and storage ... 9  10 Sampling sheet ... 9  Appendix A (Informative) Lime sampler ... 10  Sampling method for lime 1 Scope This document specifies the terms and definitions, sampling tools, sampling sites and locations, total sampling size, sampling procedures, sample preparation, packaging and storage, sampling sheets, of lime sampling. This document is applicable to the inspection sampling of the production and use of quicklime, quicklime powder, slaked lime powder. 2 Normative references The provisions in following documents become the provisions of this Standard through reference in this Standard. For the dated documents, only the versions with the dates indicated are applicable to this document; for the undated documents, only the latest version (including all the amendments) is applicable to this standard. JC/T 619 Terms for lime 3 Terms and definitions The terms and definitions as defined in JC/T 619, as well as the following terms and definitions, apply to this document. 3.1 Manual sampling Collection of lime samples by the use of manual sampling tools. 3.2 Automatic sampling Collection of lime samples by the use of an autosampler. 3.3 Unit sample A lime sample, which is taken from a point or part of each inspection lot, according to the specified amount. out in rainwater OR in a heavily polluted environment. 5.2 The sampling of lime production inspection should be at the following locations: a) Lime kiln's outlet; b) Lime conveyor belt; c) Lime storage or storage yard; d) The discharge port of the conveying pipeline; e) Feeding port of lime, before exit-factory, into the transportation equipment, bagged, bulk trucks, etc. 5.3 Sampling for lime use inspection should be at the following locations: a) Feeding port of lime, before exit-factory, into the transportation equipment, bagged, bulk trucks, etc.; b) Material inlet and outlet of bulk truck, on the lime transportation equipment handed over by the user; c) Lime warehouse or storage yard. 6 Total sampling The total amount of quicklime, which is sampled for each inspected lime inspection lot, shall not be less than 24 kg; the total amount of quicklime powder and slaked lime powder sampled shall not be less than 5 kg. 7 Sampling steps 7.1 Sampling from storage yards, warehouses, vehicles (ships) Use ordinary pointed steel shovel or I-type manual sampling shovel for sampling. Randomly select 12 sampling points, from different parts of each inspection lot. The sampling points shall be evenly or cyclically distributed on the diagonal or quarter line of the storage yard, warehouse, vehicle (ship); meanwhile it shall take samples from 100 mm below the surface or 100 mm above the bottom layer; each unit sample is not less than 2 kg. If there is a large block, which has a maximum size greater than 100 mm, in the sampling point, it shall be crushed. Tale some of the broken blocks, that can represent the mass of the block; break it; pass it through a 20 mm test sieve, to obtain the unit sample. The single sample obtained shall be immediately put into a clean, dry, moisture-proof airtight container or sealed bag. 7.2 Sampling at the inlet and outlet of conveyor belts, lime silos, bulk trucks For lumpy lime, use I-type manual sampling shovel or ordinary pointed steel shovel to take sample. From the flowing quicklime of each inspection lot, take 12 unit samples at regular intervals; each sample is not less than 2 kg. If there is a large block, which has the largest size greater than 100 mm, in the sampling point, it shall be processed in accordance with 7.1. For powdered lime and slaked lime, use manual sampling tube or type-II manual sampling shovel to take sample, OR use automatic sampler to take sample. Take 10 unit samples, at regular intervals, from the flowing quicklime powder or slaked lime powder, in each inspection lot; each unit sample shall not be less than 0.5 kg. The obtained unit sample is immediately put into a clean, dry, moisture-proof airtight container or airtight bag. 7.3 Sampling at the outlet of the lime kiln Select the appropriate sampling location, according to the discharge method of the lime kiln's discharge port AND the lime temperature; proceed according to 7.2. 7.4 Sampling in bags For bags of lime not more than 100 kg, randomly take 10 bags from each inspection lot (the bags shall be intact). Use the manual sampling tubes for sampling. Insert the sampling tube, obliquely from the opening of the bag, to an appropriate depth, in the bag. Take out a tube of lime. The sampling volume of each bag of lime shall not be less than 0.5 kg. For bags of lime not less than 1000 kg, randomly take 6 bags from each inspection lot (the bags shall be intact:). For the lumpy lime, use the type-II sampling shovel to take sample, uniformly from two locations along the center line, according to 7.1. For powder lime, use a manual sampling tube to take sample, uniformly from two locations along the center line; insert the sampling tube diagonally into the bag, to an appropriate depth, to take out a tube of core lime; the mass of each unit sample is not less than 0.5 kg. The unit sample obtained shall be immediately put into a clean, dry, moisture- proof airtight container or sealed bag. 8 Sample preparation 8.1 Composite sample The unit samples, which are obtained from each inspection lot, shall be uniformly mixed, immediately after unpacking. Use the quartering method to reduce it. The lumpy quicklime shall be reduced to not less than 9 kg; the quicklime powder or slaked lime powder shall be reduced to not less than 1 kg. 8.2 Test sample and retained sample Divide the reduced mixed sample equally, one is the test sample AND the other is the retained sample. 9 Packaging and storage 9.1 The obtained test sample and retained sample shall be stored immediately in a clean, dry, moisture-proof container, that does not affect the performance of lime, AND sealed. 9.2 The samples shall be stored in a dry environment. The sample container shall have a clear and difficult-to-wipe sealing strip, which is marked with the product name, serial number, sampling location, sampling person. 10 Sampling sheet After the sample is obtained, the person in charge of sampling shall fill in the sampling sheet. The sampling sheet shall include at least the following: a) Sample number; b) Lime type; c) Lot number; d) Sampling date; e) Sampling location; f) The quantity of samples; g) Sampling person. ......

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