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IS 1090 (2002): Compressed Hydrogen [CHD 6: Industrial Gases]

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IS 1090 (2002): Compressed Hydrogen [CHD 6: Industrial Gases] 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. “जान का अधकार, जी का अधकार” “परा 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 1090 (2002): Compressed Hydrogen [CHD 6: Industrial Gases] “ान $ एक न भारत का नमण” Satyanarayan Gangaram Pitroda “Invent a New India Using Knowledge” “ान एक ऐसा खजाना > जो कभी चराया नह जा सकताह ै”ै Bhartṛhari—Nītiśatakam “Knowledge is such a treasure which cannot be stolen” Is 1090:2002 Indian Standard COMPRESSED HYDROGEN —SPECIFICATION ( Third Revision) I ICS 71.100.20 I 1, I 0 BIS 2002 BUREAU OF INDIAN STANDARDS 1 MANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARG 1 NEW DELHI 110002 I i > ] September 2002 Price Group 1I f Industrial Gases Sectional Committee, CHD 6 FOREWORD This Indian Standard (Third Revision) was adopted by the Bureau of Indian Standards, after the draft finalized by the Industrial Gases Sectional Committee had been approved by the Chemical Division Council. The second revision was prepared to upgrade the quality of the gas required by the Electric Lamp Industry by incorporating the limits of impurities, like carbon monoxide, hydrocarbons and oxides of nitrogen etc, which were not described earlier. This high purity hydrogen of 99.9 percent purtiy is also used in the production of butane], octanol, polyurethane, polyamides, aniline and hydrogenation of fats and oils. Since the specification calls for high purity standards, the analysis demand instruments having high sensitivity and precision. Hence, the classical glass test sets, orsat apparatus, etc, have been discarded for high purity gas for which only instrumental methods involving electrochemical analyzer, gas chromatography, etc, have been prescribed. This third revision has been undertaken since it has been now technically possible to produce still higher purity ~{~radcof 99,999 percent which finds its use in Electronic Industry, necessity has been felt to revise the standard for incorporating the ultra pure grade of the hydrogen gas. Since this grade requires stricter control of impurities, analysis of impurities are done with a different approach. 7’he impurities are concentrated by absorption and determining by chromatography. The composition of the Committee responsible for formulation of this standard is given at Annex N. 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 should be the same as that of the specified value in this standard. .-$ ,. Is 1090:2002 Indian Standard COMPRESSED HYDROGEN — SPECIFICATION (Third l?evision) 1 SCOPE 5.2 For Grade 1 and Grade 2 This standard prescribes the requirements and methods The material shall aIso comply with the requirements of sampling and test for compressed hydrogen. given in Table 1 when tested in accordance with the methods prescribed in referred Annex. Instrumental 2 NORMATIVE REFERENCES methods as well as classical methods have been The following Indian Standards contain provisions prescribed for determination of impurities in which, through reference in this text, constitute compressed hydrogen. For Grade 1, instrumental provisions of this standard. At the time of publication, methods shall be employed. For Grade 2, classical the editions indicated were valid. All standards are methods, wherever specified, shall be adopted. subject to revisions, and parties to agreements based However, for routine analysis, instrumental methods on this standard are encouraged to investigate the may be adopted for Grade 2 also. possibility of applying the most recent editions of the standards indicated below: Table 1 Requirements for Compressed Hydrogen (Clause 5.2) IS No. Title 265:1993 Hydrochloric acid ~ourth revision) sl Characteristic Requirements Methods of 266:1993 Sulphuric acid (third revision) 308:1988 Dissolved acetylene (gas) (third revision) 1260 Pictorial marking for handling and i) HydrogenPercent 99.98 99.6 A (Part 1): 1973 labelling of goods: Part 1Dangerous by volume, &fin ii) Oxygen, ppm by 4 0.3 (percent B goods volume, MO-X by volume) 4905:1968 Methods for random sampling iii) Nitrogen, ppm by 100 0.1 (percent c 7062:1973 Glossary of terms used in gas volume, MUX by volume) iv) Water vapour, 4 50 D industry mg/m3, Ma v) Carbon dioxide, 5 25 E 3 TERMINOLOGY ppm by volume, Max For the purpose of this standard, the definitions given vi) Carbon monoxide, 1.0 10 F in IS 7062 shall apply. ppm by volume, Max 4 GRADES vii) Mercury, mghf, Nil 0.2 G Mar The material shall be of the following three grades: viii) Hydrocarbons, ppm 1.0 — H by volume, Max a) U[tra Pure Grade — Suitable for use in semi- conductor industry and for research purposes. b) Grade 1 — Suitable for use in electric lamp 5.3 For Ultra Pure Grade industry, manufacture of butanol, octanol, The material shall comply with the requirements given polyurethane, polyamides, aniline, hydroge- in Table 2 when tested in accordance with the methods nation of fats and oils and for determining prescribed in referred Annex. reducibility of sinter, iron ore, etc. c) Grade 2 — Suitable for other purposes like 6 PACKING cooling turbogenerator, gas welding, cutting The gas shall be supplied compressed in cylinders. of special steel, filling meteorological The design of cylinders, pressure of gas in cylinders, balloons, etc. and packing and transport shall be in accordance with the Gas Cylinders Rules, 1940 of the Government of 5 REQUIREMENTS India with such modifications as maybe ordered from 5.1 Compressed hydrogen shall be a colourIess, time-to-time by the Chief Controller of Explosives, odourless gas and shall consist essentially of hydrogen. Government of India, or other duly constituted authority. 1 Is 1090:2002 Table 2 Requirements for Compressed Hydrogen shall be in accordance with the Gas Cylinder (Clause 5.3) Rules, 1940 with such modifications as maybe ordered from time-to-time by the Chief Controller of SI Characteristic ~Jltra Methods of No. Pure Test (Ref Explosives, Government of India or other duly Grade to Annex) constituted authority. The grade of the gas shall be i) Hydrogen percent by mass, 99.999 Efy stenciled on the cylinder. The cylinders shall also be volume, ktin difference marked with the appropriate symbol specified in ii) Oxygen, ppm by volume, 1.0 J Max IS 1260 (Part 1). iii) Nitrogen, ppm by volume, 2.0 J 7.1.1 1 Max The cylinders may also be marked with the iv) Water vapour, mg/m~, Max 3.0 L Standard Mark. v) Carbon dioxide, ppm by 0.5 J volume, Max 7.1.1.1 The use of the Standard Mark is governed by vi) Carbon monoxide, ppm by 1.0 J the provisions of the Bureau of Indian Standards ACI, volume, Max 1986 and the Rules and Regulations made thereunder. vii) Mercury, mg/rn3, Max Nil K viii) Hydrocarbons, ppm by I .0 H The details of conditions under which the Iicence for volume, Max the use of the Standard Mark may be granted to ix) Solphrrr compound, Max 0.1 A-4 of manufacturers or producers maybe obtained from the 1S 308 Bureau of Indian Standards. ~) Argon Nil J 8 SAMPLING 7 MARKING Representative samples of gas shall be drawn and 7.1 The marking, painting and Iabelling of cylinders adjudged as prescribed in Annex M. ,, ..”. ANNEX A [Table 1, S1 No. (i)] . 3 DETERMINATION OF HYDROGEN A-1 METHODS c) Drying tube — U-form packed with phosphorus pentoxide; A-1.0 Two methods, namely, the gravimetric method and the volumetric method are prescribed. In case of d) Copper oxide tube — U-form filled with dispute, gravimetric method shall be considered as the granulated copper oxide; -- referee method. e) Electric furnace — with thermostatic attachment, capable of heating to 400°C. A-1.1 Gravimetric Method o Thermometer — capable of reading up to A known volume of the gas, after removal of carbon 400”C; and monoxide and oxygen is dried and passed over heated Absorption tube — U-form filled with copper oxide. The resulting water formed is absorbed g) t’ in a phosphorus pentoxide tube and weighed. phosphorus pentoxide. A-1.l.2 Reagents A-1. 1.1 Apparatus The apparatus shall consist of the following parts a) Mercury assembled as shown in Fig. 1. b) Copper oxide, granular — 600 to 500 microns a) Levelling bottle — of 200 ml capacity; c) Phosphorus pentoxide b) Burette — of 100 ml graduated into tenths of millilitres; d) Glass wool — long fibre 2 IS 1090:2002 4oo”c N2 — LEV??LLING BOTTLE = — TEMP 300°-4000C — — ~-=x:. -—- ——. 0 --- LJ FIG. 1 ASSEMBLYOFAPPARATUSFORTHEDETERMINATIONOF HYDROGEN(VOLUMETRICMETHOD) A-1. 1.3 Pt-ocedure P= atmospheric pressure in mm/Hg, and v= initial volume in ml of the gas (free from Collect a sample of the gas freed from carbon dioxide and oxygen in the burette over mercury.
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