इंटरनेट मानक Disclosure to Promote the Right To Information Whereas the Parliament of India has set out to provide a practical regime of right to information for citizens to secure access to information under the control of public authorities, in order to promote transparency and accountability in the working of every public authority, and whereas the attached publication of the Bureau of Indian Standards is of particular interest to the public, particularly disadvantaged communities and those engaged in the pursuit of education and knowledge, the attached public safety standard is made available to promote the timely dissemination of this information in an accurate manner to the public. “जान1 का अ+धकार, जी1 का अ+धकार” “प0रा1 को छोड न’ 5 तरफ” Mazdoor Kisan Shakti Sangathan Jawaharlal Nehru “The Right to Information, The Right to Live” “Step Out From the Old to the New” IS 3976 (2003): Protective Rubber Canvas Boots for Miners [CHD 19: Footwear] “!ान $ एक न’ भारत का +नम-ण” Satyanarayan Gangaram Pitroda ““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee”” “!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै” Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” IS 3976 : 2003 Indian Standard PROTECTIVE RUBBER CANVAS BOOTS FOR MINERS — SPECIFICATION ( Fifth Revision ) ICS 13.340.50 © BIS 2003 B U R E AU OF I N D I AN S T A N D A R DS MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG NEW D ELHI 110002 August 2003 Price Group 6 Footwear Sectional Committee, CHD 019 FOREWORD This Indian Standard ( Fifth Revision ) was adopted by the Bureau of Indian Standards, after the draft finalized by the Footwear Sectional Committee had been approved by the Chemical Division Council. Protective rubber canvas boots are used by workers engaged in underground mining of coal, mica, silica, clay, stone and other minerals. Type 1 boots are preferred for use where wet surface condition is prevalent. However depending upon the nature of working in mines, the selection is to be made for use of protective boots. Workers engaged in wet condition, sometimes face problem of upper fabric being weakened due to continuous use in contact with water and to cope up with failures, steps are taken in this revised standard. Specification on this subject was last revised in 1995. Based upon feed back from both users and manufacturers, the specification is being revised with modifications and additional requirements. Continuous use for last two decades, the product has established it's worth and is widely used and the problems and failures as are observed during such long use and keeping in mind the improvements that have taken place in the field of textile technology and other footwear accessories and also the requirement of aligning footwear standards of BIS in the line with ISO standards, the present revision is made. Whether coal or other minerals, the recommendations made in IS 6519 : 1971 'Code of practice for selection, care and repair of safety footwear' is applicable for storage and use of the same. The composition of Committee responsible for formulation of this standard is given at Annex D. For the purpose of deciding whether a particular requirement of this standard is complied with, the final value, observed or calculated, expressing the result of a test or analysis, shall be rounded off in accordance with IS 2 : 1960 'Rules for rounding off numerical values (revised)'. The number of significant places retained in the rounded off value shall be the same as that of the specified value in this standard. AMENDMENT NO. 1 AUGUST 2004 TO IS 3976:2003 PROTECTIVE RUBBER CANVAS BOOTS FOR MINERS — SPECIFICATION ( Fifth Revision ) ( Foreword ) — Insert the following paragraph after para 6: "IS 3976 Safety rubber canvas boots for miners' is redesignated as 'Protective rubber canvas boots for miners', subsequent to the adoption of 'ISO 8782, Parts 1, 2, 3 and 4' as dual number standards, as all types of Safety, Protective and Occupational Footwear formulated by CHD 19 are being aligned with the definition of Safety, Protective and Occupational Footwear as given in ISO 8782, Part 1. The definition as safety, protective, occupational relates to the required toe impact as per test condition. In view of the same 'Safety rubber canvas boots for miners' is being redesignated as 'Protective rubber canvas boots for miners' in accordance with the requirement specified in IS 15298 (Part 3) 'Protective footwear' in place of 'Safety footwear' as earlier." [ Page 3, Table 3, Sl No. (v), col 3 ] — Delete '10.5'. [ Page 3, Table 3, Sl No. (v), col 4 ] — Insert '10.5'. [ Page 3, Table 3, Sl No. (vi), col 3 ] — Delete '250'. [ Page 3, Table 3 , Sl No. ( vi), col 4 ] — Insert '250'. [ Page 6, clause 6.2, line 2 ) — Substitute 'IS 15298 (Part 1)/ISO 8782 (Part 1)' for 'IS 3400 (Part 3)'. ( Page 6, clause 7 ) — Substitute 'MARKING AND PACKING' for 'MARKING'. ( Page 6, clause 7.1.1 ) — Insert the following new clause after 7.1.1: '7.2 PACKING As agreed to between the purchaser and the manufacturer.' ( CHD 19 ) Reprography Unit, BIS, New Delhi, India 4 IS 3976 : 2003 Indian Standard PROTECTIVE RUBBER CANVAS BOOTS FOR MINERS — SPECIFICATION ( Fifth Revision ) 1 SCOPE 4 TYPES This standard prescribes requirements and methods of This standard covers two types of industrial protective sampling and test for protective rubber canvas boots boots namely Type 1 and Type 2, typical of their with protective steel toe cap at toe for industrial performance requirement as shown in Fig. 1 and Fig. 2 protection of the users in mines. respectively. 2 REFERENCES 5 REQUIREMENTS The standards listed in Annex A contain provisions 5.1 Design which though reference in this text, constitute The boots of Type 1 and Type 2 are recommended provisions of this standard. At the time of publication, typical to design as shown in Fig. 1 and Fig. 2 the editions indicated were valid. All standards are respectively. subject to revision and parties to agreements based on this standard are encouraged to investigate the 5.1.1 Fittings possibility of applying the most recent edition of the Fittings of the footwear shall be in conformity to Table standards, listed in Annex A. 9 of IS 1638 ( measurement of men's last ). Boots shall be made in sizes 5 ( matching to parts point 38 ) to 1 1 3 TERMINOLOGY (matching to paris point 45). For the purpose of this standard, the definitions given in IS 2050 shall apply. FIG. 1 PROTECTIVE RUBBER CANVAS BOOTS FOR MINES, TYPE I 1 IS 3976 : 2003 FIG. 2 PROTECTIVE RUBBER CANVAS BOOTS FOR MINES, TYPE 2 5.2 Material Higher value of outer layer and inner layer fabric can also be used as agreed to between the manufacturer 5.2.1 Upper and the purchaser to meet the special requirement of The upper shall consist of (Rip stop) fabrics of cotton performances. or man made or it's blend being the over layer and The shade of over layer shall be as agreed to between cotton drill as an inner layer and shall conform to the the purchaser and the manufacturer. requirements given in Sl No. (i) and (ii) of Table 1. In cases of cotton black outer or inner layer fabric, the Two fabrics shall be adhered together with rubber same shall be free from sulphur dyes when tested in compound so as to achieve the requirements as accordance with Annex B. prescribed for consolidation test and composite upper material strength tests. Table 1 Requirements for Overlayer and Inner Layer (Clause 5.2.1) Sl Materials Characteristics Requirements Method of Test, No. Ref to IS (1) (2) (3) (4) (5) I) Over layer Breaking Load in N, Min: 1969 a) Warp 1 650 b) Weft 1 350 c) Ends/dm 220 ± 5% (2 ply) 1963 d) Picks/dm 150 ± 5% (2 ply) e) Construction RIP Stop — ii) Inner layer Breaking Load in N, Min: (Cotton drill) a) Warp 1 000 1969 b) Weft 550 c) Ends/dm 390 ± 12 1963 d) Picks/dm 195 ± 12 2 IS 3976 : 2003 5.2.2 Binding Material Binding material shall conform to the requirements given in Table 2 when tested according to the methods as prescribed in col 4 of Table 2. Table 2 Requirements for Binding Material (Clause 5.2.2) Sl Characteristics Require Method of Test, No. ments Ref to IS FIG. 3 DESING OF THE SOLE AND HEEL (1) (2) (3) (4) i) Width, in mm, Min 13 1954 5.2.4.2 All rubber components shall conform to Table 3 ii) Breaking load on 50 cm when tested as per prescribed test method from made grip of test length average, in N, Min 360 1969 up footwear. 5.2.4.3 Ageing 5.2.2.1 In case of cotton black binding material, the same shall be free from sulphur dyes when tested in Finished boots shall be aged at 100 ± 2°C for 24 h. On accordance with Annex B. completion of test, all rubber components shall not develop any sign of tackiness or brittleness. Change 5.2.3 Reinforcing Material in physical requirements after ageing shall conform to Quarter at the back of the upper, heel region shall have the requirements in Table 4. a reinforcement with 25 mm minimum wide strip made out of the material conforming to 5.2.1 or any other material as agreed to between the purchaser and the manufacturer having breaking strength not less than that of composite breaking strength of upper as prescribed in 6. Reinforcing materials in specific portions of upper to meet the performance requirement of purchaser may also be provided as agreed to between the manufacturer and the purchaser. FIG. 4 TYPE 2, TOF POSITION, SECTIONAL VIEW 5.2.4 Rubber Components 5.2.4.1 The design of rubber sole heel and other rubber 5.2.4.4 Thickness of components components shall be as agreed to between the purchaser Individual components of the boots shall comply with and the manufacturer. Sole-heel as shown in Fig. 3 are the thickness and material requirements prescribed in recommended only. Sectional view of Type 2 toe Table 5. position is at Fig. 4. Table 3 Physical Requirements for Rubber Components (Clauses 5.2.4.2 and 6.1) Sl Characteristics Foxing and Outer Sole Method of Test, No. Toe Cap Heel Ref to IS (1) (2) (3) (4) (5) i) Relative density, Max 1.4 1.2 3400 (Part 9)) II) Hardness IRHD 60 ± 5 3400 (Part 2) iii) Hexing resistance, number of cycles a) Initial crack, Min 60 000 3400 (Part 16) b) Cut growth at the end of 600 1 50 000 cycles, Percent, Max iv) Change of hardness after accelerated ageing at 100 ± 2°C for 24 h (IRHD) + 5 3400 (Part 4) – 2 3400 (Part 2) v) Tensile strength in Mpa, Min 10.5 3400 (Part 1) vi) Elongation at break, in percent, Min 250 3400 (Part 1) NOTE Readings from 30 to 95 (IRHD) are approximat ely the same as those of the Shore Durometer, Type A. 3 IS 3976 : 2003 Table 4 Change in Physical Requirements Minimum breaking load of 45 kg is to be achieved After Ageing when tested between 18 cm grip in accordance with 9.1 (Clause 5.2.4.3) of IS 1969. In case of cotton lace of black colour, the same shall Sl Characteristics Change in Percent Method of Test, pass the test for freedom of sulphur dyes when tested No. of Original Value Ref to IS in accordance with Annex B. Two ends of the laces (1) (2) (3) (4) shall be provided with plastic tips. i) Lensile strength 15 3400 (Part 1) Colour of the lace would be as agreed to between the purchaser and the manufacturer. ii) Elongation at break 15 3400 (Part 1) 25 5.2.8 Eyelets 5.2.5 Thread for Upper Closing Aluminium eyelets of collar diameter 10 mm and wall The breaking load and construction of sewing thread thickness of 0.30 to 0.35 mm shall be used. shall be conforming to requirements as prescribed in 5.3 Construction Table 6. Colour of thread will be as agreed to between the manufacturer and the purchaser. 5.3.1 The upper shall be made matching to shape and dimensions of last in conformity to Table 9 of IS 1638 In case of black cotton thread, the same shall be free (Measurement of men's last). from sulphur dyes when tested in accordance with Annex B. Components of upper is to be stitched in lock stitch machine. Stitch used in the upper will be 30 to 40 per 5.2.6 Protective Steel Toe Cap dm (average of 5 measurements) 8 pairs of eyelets Protective steel toe cap for industrial protection for Type 1 and 5 pairs of eyelets for Type 2 or as agreed conforming to Type 2 of IS 5852 shall be used. to between the purchaser and the manufacturer, as the case may be shall be fitted to each upper. 5.2.7 Laces The boots shall be provided with lace having length of The tongue shall be full bellow for Type 1 and half 115 + 5 cm for Type 1 and 100 ± 5 cm for Type 2. bellow for Type 2. Table 5 Material Requirements of Protective Canvas Boots and Thickness Requirement of Individual Components and Rubber Sole (Clause 5.2.4.4) Sl Components Material Thickness, Min No. mm (1) (2) (3) (4) i) ??? Rubber 2 00 ii) Designed outer most toe cap Rubber 1 30 iii) Sponge toe puff under protective steel toe cap Rubber/Sponge 1.50 iv) Toe puff between steel toe cap and outer rubber toe Both side rubberised fabric v) Toe puff inside of upper at toe One side rubberised fabric vi) Counter One side rubberised inner layer fabric 1.3 with suitable blend of rubber and flock vii) Insole do 2.2 viii) Bottom filling Rubber compound or compound with cotton flock or sponge iv) Sole heel: a) Forepart 1) with cleat Rubber 10 2) without cleat Rubber 3 b) Heel 1) with cleat Rubber 15 2) without cleat Rubber 9 X) Foxing covering vamp for use in Type 1 suitable for Rubber 1 use in wet condition 4