1、STD-BSI BS EN IS0 BOL-3-ENGL 1777 Lb24bb7 0578Li25 T7L BRITISH STANDARD Pulps - Determination of saleable mass in lots Part 3. Unitized bales The European Standasd EN IS0 8013 : 1996 has the status of a British Standard ICs 85.040 BS EN IS0 801-3 : 1997 Imorporati?zg AmendMt No. 1 to BS4747:Part3: 1
2、995 (renumbers BS as 1997) BS EN IS0 801 -3 : NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW STD*BSI BS EN IS0 8OL-3-ENGL 1777 LbZibb7 057842b 728 BS EN IS0 801-3 : 1997 Issue2, March 1997 Amd. No. This British Standard, having been prepared under the direction of the Materia
3、ls and Chemicals Sector Board (Il-), was published under the authority of the Standards Board and comes into effect on 15 January 1995 Q BI 1997 Date lxt affected The foowing BI references relate to the work on this standard: Committee reference PAI11 1 Draft for comment 91145547 Dc ISBN O 680 23617
4、 1 March 1997 941 1 Committees responsible for this British Standard indicated by a sideline in the margin - s -k.n -yCG- ti, Y The preparation of this Brihsh Standard was entrusted to lchnical Committee PAI/11, upon which the foliowing bodies were represented: British Carton Association British Fib
5、reboanl Packaging Association British Printing Industries Federation British lxtile Confederation Envelope Makers and Manufacturing Stationers Association Her Majestys Stationery Office Institute of Paper Conservation Paper Federation of Great Britain Pira International Post Office University of Man
6、chester (Institute of Science and Bchnology) Coopted members - STD*BSI BS EN IS0 8UL-3-ENGL 1777 Lb2LibbS 0598427 8b4 = I Front cover 2 Inside front cover 2 a 1 b blank i 2 Issue 1, March 1997 BS EN IS0 801-3 : 1997 11 2 EN cover 1 iib 1 1 to 11 Originai Back cover 2 Summary of pages The following t
7、able identifies the current issue of each page. issue 1 indicates that a page has been introduced for the first time by amendment. Subsequent issue numbers indicate an updated page. Vertical sidelining on replacement pages indicates the most recent changes (amendment, addition, deletion). Page I iss
8、ue II Page I issue Change of identifier Wherever BS 4747 : Part 3 : 1995 appears in this standard, it should be read as BS EN IS0 8013 : 1997 O BSI 1997 a * * v, STD-BSI BS EN IS0 801-3-ENGL 1997 1b24bb9 0598Li28 7TO Issue 2, March 1997 BS EN IS0 8013 : 1997 Contents Committees responsible pw3e Insi
9、de front cover National foreword ii I Foreword iib Method 1 scope 1 2 Definitions 1 3 Principle 2 4 Apparatus 2 6 Sample units 2 6 Procedure 3 7 Expression of results 6 8 “+streport 7 Annexes A B (informative) Example of a full certificate of analysis and related calculations 8 (informative) Equipme
10、nt for marking the position of the specimen sheets in samde baies 11 28bles 1 Number of sample units to be taken 3 B.l Distance of specimen sheet from uppermost graduation line 11 Figares 1 2 3 Diagram incicating the position from which specimen sheets shaU be taken 4 Diagram iustrating the numberin
11、g of the bales m the sampie units 4 Diagram illustrating how test pieces with constant angle at the apex are to be cut from specimen sheets selected according to the diagram given in figure 1 5 i STD*BSI BS EN IS0 BUL-3-ENGL 1777 m LbZrlbb7 0578927 b37 m BS EN IS0 8013 : 1997 Issue 2, March 1997 Nat
12、ional foreword This British Standard has been prepared by Technid Committee PAV11 and is the English hguage version of EN IS0 8013 : 1996 Pulps - Detemzinution of sWk ?nass in lots - Part 3: Unitized bales, pubiished by the European Committee for Standardization (CEN). It is identical with IS0 8013
13、: 1994, published by the Inteniational Committee for Standardization (ISO). It supersedes BS 4747 : Part 3 : 1995 which is withdrawn. EN IS0 8013 : 1996 was produced as a result of international discussions in which the United Kingdom took an active part. EN IS0 8013 : 1996 has been approved by CEN
14、member bodies under the weighted voting procedures ininduced in 1988 to coincide with the introduction of New Approach Directives from the Commission of the European Community. Compliance with a British Standard does not of itself confer immunity from legal obligations. O BSI 1997 STD-BSI BS EN IS0
15、801-3-ENGL 1777 Lb24667 0578Li30 357 EUROPEAN SrIANDARD NO= EXJR0PEE”E EUROP- NORM EN IS0 8013 September 1996 ICs 86.040 Descriptors: Paper puips, bales, tests, determination, dry matter, commercial mass, mass measurement English version Pulps - Determination of deable mass in lots - Part3: Unitized
16、 bales (IS0 8013 : 1994) Ptes - Dtermination de la masse marchande des lots - Partie 3 Ballots (IS0 801-3 : 1994) Zellstoffe - Bestimmung des Handelsgewichtes von Lieferposten - Teil 3 Grogballen (IS0 8013 : 1994) This European Standard was approved by CEN on 1996-0825. CEN members are bound to comp
17、ly with the CENKENELEC Internal Regulations which stipuiate the conditions for giving this European Standard the status of a national standard without any aiteration. Upto-date lists and bibliographieal references concerning such national standards may be obtained on application to the Centrai Secre
18、tariat or to any CEN member. This European Sandard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the offici
19、al versions. GEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CEN European Committee for Ctandardization Comit Europen de No
20、rmalisation Europisches Komitee fr Normung Central Secretariat: rue de Stassart 36, B-1060 Brussels O 1996 Copyright reserved to CEN members Ref. No. EN IS0 8013 : 1996 E STD-BSI BS EN IS0 BOL-3-ENGL 1797 lb24bb7 0578433 275 EN rso 801-3 : 1996 bue 1, March 1997 Foreword The text nf the Internationa
21、l Standard hm Technid Committee ISOflC 6, Paper, board and pulps of the Intemational organizaton for Standardization O) has been taken over as a European Standard by Technical Committee CENflC 172, Pulp, paper and board, the Secretariat of which is held by DIN. This European Stan - wrappers (pulp -
22、paper); For the purposes of this part of IS0 801, the following definitions apply. - packaging wires or strappings of individual bales. 2.5 oven-dry mass: The mass obtained on drying pulp at oc until constant mass is reached. 2.1 lot: The total number of unitized bales of the same sort of pulp of sp
23、ecific characteristics. A lot of unitized bales of pulp is said to be “with specification“ if it is accompanied by a certificate of origin stating for each bale unit either 2.7 air-dry mass: The mass of the pulp when its moisture content is in equilibrium with the ambient atmosphere. 1 - STD=BSI BS
24、EN IS0 801-3-ENGL 1997 = 1b2LibbS 0578433 Ob8 IS0 801-3:1994(E) 2.8 theoretical commercial dryness: A conven- tional equilibrium value of 88 % or 90 % according to the country and/or commercial agreements.) 2.9 saleable mass: The gross mass (2.4) multiplied by the absolute dryness (2.6) divided by t
25、he theoreti- cal commercial dryness (2.8). Usually, it approximates to the air-dry mass (2.7). 2.10 invoiced mass: The saleable mass (2.9) indi- cated by the vendor on the invoice. 3 Principle From the lot, sample units are taken in number which is a function of the total number of units in the com-
26、 plete lot. The bales in the sample units are weighed2) and collected so that the bales of each unit form one group. Five specimen sheets are selected from each sample bale under defined conditions. From each specimen sheet, a test piece is cut in the form of a triangle, as indicated in clause 6. Th
27、e test pieces are weighed and dried to constant mass to determine their oven-dry mass (2.5). The saleable mass (2.9) of the lot is then calculated. 4 Apparatus 4.1 Scale, suitable for weighing the bales to an ac- curacy of at least 1/1 000. 4.2 Balance, of sensitivity suitable for weighing the test
28、pieces to an accuracy of at least 1/5 000. The balance shall have a capacity of at least 5 kg and a sensitivity of 0,l g. Its weighing pan (or weighing ta- ble) shall be wide enough to accommodate the test pieces so that they do not protrude outside the rim of the pan. NOTE 1 As the test pieces are
29、weighed when still hot they cause an upstream flow of air around the weighing pan and, in consequence, a negative error in the balance read- ing. This error is minimized if the pan is wide enough so that no part of the test pieces protrudes outside the rim of the pan. 4.3 Equipment, for marking the
30、position of the specimen sheets to be selected (see annex B) and the test pieces in these sheets, as well as for cutting them. 4.4 Equipment, for storing at least 40 test pieces to prevent them from gaining or losing mass before weighing. 4.5 Drying oven, with good ventilation, and capable of being
31、controlled at 105 “C f 2 “C. 5 Sample units AH the sampte units shall be representative of the lot and for this purpose, so far as possible, these units should be setected at random from all parts of the lot. In the absence of any other agreement between the interested parties, the available part of
32、 the lot to be examined shall be not less than half the complete lot at the time of examination. If the units or bales in the units have identification numbers relating to several series, the sample units shall be selected as far as possible in proportion to the size of each of these series. The sam
33、pte units shall be intact and as little damaged as possible, and shall not include - bales showing signs of definite drying or wetting, as may happen with bales situated on the external faces of a stack; - bales or wrappings of bales having deteriorated, or showing clear signs of accidental localize
34、d wet- ting or loss; - bales carrying traces of previous sampling; - bales whose number is illegible or is not contained in the specification, if this is a lot specified unit by unit. The number of sample units, n, to be taken is, up to a lot size of 650 units, determined by the formula .=fi where N
35、 is the total number of units in the lot. 1) If the air dryness is 90 %, the pulp contains 90 parts by mass of absolutely dry fibres and 10 parts by mass of water. For an air dryness of 88 %, the corresponding figures are 88 and 12. 2) The mean of the gross mass of the sample units is considered as
36、being the mean of the gross mass of all the units in the lot. 2 For lots exceeding 650 units, the number of sample units is 25 plus one additional sample unit for each additional 100 units in the lot. The number of sample units to be taken is given in table 1. For frozen pulp, the sampling shall be
37、postponed until the bales have thawed, so that satisfactory test pieces can be cut from the sheets. NOTE 2 If the number of sample units is determined as stated above, the number of sample bales will be of the same order as the maximum number of sample bales in IS0 801-1 for a similar lot. Practice
38、has shown that the minimum number of bales as stated in IS0 801-1 very sel- dom is enough for a satisfactory accuracy. One reason for this is that nowadays the gross masses of the bales are not always adjusted to 200 kg but can vary by almost 10 %. Table 1 - Number of sample units to be taken rotal
39、number of units in lot up :o 52 13 to 20 2: to 30 31 to 40 41 to 55 56 to 70 71 to 90 91 to ti0 111 to 130 131 io 155 1% to 380 181 to 210 211 to 240 241 to 270 271 to 305 306 to 340 341 to 380 381 to 420 421 to 460 461 to 505 506 to 550 551 to 600 601 to 650 651 to 750 751 to 850 851 to 950 etc. 6
40、Procedure Number of sample units 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 6.1 Weighing of sample bales Determine the gross mass of each sample bale in each sample unit separately and report the results to an accuracy between 1/500 and 1/1 000; report, if IS0 801-3:1994(
41、E) possible, their marks and references in the order of their weighing; from the results, calculate the gross mass of each sample unit. Check the scale (4.1) be- fore the weighings and during the course of the op- eration. If the moisture content of the sheets of pulp serving as wrappers obviously d
42、iffers from that of the rest of the bale, or if the wrappers are invoiced separately, test them separately in accordance with 7.2. NOTE3 The sample units can be weighed as such, if there is a scale suitable for weighing the units to an accu- racy of at least 111 000. In this case, the strappings (st
43、eel bands) holding the unit together are weighed separately and their mass is subtracted from the gross mass of the unit. 6.2 Selection of specimen sheets Select five specimen sheets from each sample bale, as specified below, as soon as possible after weigh- ing. Draw five sheets from each sample ba
44、le, the distance between the sheets being constant and equal to one-fifth of the total thickness of the bale see the note). Do not take the sheets from the same positions in each bale, but select them according to the pro- cedure specified below and itlustrared in figure f. If the number of bates in
45、 the units deviates from eight, give the bales a running number starting from sample unit 1, sample bate 1 and take the sample sheets ac- cording to the diagram in figure I. Thus, in the sample bale No. t, the first sheet is taken 1 cm from the ex- treme top, and the last sheet (the fifth) will be o
46、ne- fifth of the thickness of the baie from the bottom. In sample bales Nos. II, 111, IV, V and VI, VI1 and VIII, each sheet is taken from a slightly lower position (actually 170 of the thickness of the bale) than the corre- sponding sheet of the preceding bale; thus, in sample bale No. VIII, the fi
47、rst sheet will be taken 1/10 of the height of the bale from the top, and the last sheet will be 1/10 of the height of the bale from the bottom. lhe sample bale No. IX will recommence the cycle and be treated in the same way as the sample bale No. I, etc. Select all specimen sheets very carefully, es
48、pecially those within about 5 cm from the top and the bottom of the bale. The specimen sheets can be selected easily with the aid of an appropriately graduated measuring rod (see annex B). Place the rod in an inclined position against the side of the bale, so that its lower end is at the level of it
49、s top. The faces on the rod correspond to the cycle of eight bales and the lines correspond to the five specimen sheets in the table. 3 IS0 801-3:1994(E) Bale Nos. I, IX, XVII etc. Bale Nos. II, X, XVIII etc. Bale Nos. III, XI, XIX etc. Bale Nos. IV, XII, XX etc. Figure 1 - Diagram indicating the position from which specimen sheets shall be taken Bale Nos. V, XIII, XXI etc. Bale Nos. VI, XIV, XXII etc. Bale Nos. VII, XV, XXIII etc. Bale Nos. VIII, XVI, XXIV etc. Figure 2 - Diagram illustrating the numbering of the bales in the sample units 6.3 C
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