Technical Committee: Petroleum and their Related Products of synthesis or biological origin Sectional Committee, PCD 3

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1 DRAFT IN WIDE CIRCULATION DOCUMENT DESPATCH ADVICE REF: DATE Doc:PCD3 (11588)C Technical Committee: Petroleum and their Related Products of synthesis or biological origin Sectional Committee, PCD 3 i) All interested members of PCDC; ii) All members of Petroleum and their Related Products of synthesis or biological origin Sectional Committee, PCD 3; iii) All members of its subcommittees; iv) All others interested. Dear Sir, Please find enclosed the following documents: Doc: No. PCD 3(11588)C Title Liquefied Petroleum Gases-Specification (Third Revision of IS 4576 ) Kindly examine this draft and forward your views stating any difficulty which you are likely to experience in your business or profession, if this is finally adopted as a revised standard. Last date for comments is : 05 July 2017 Comments if any, may please be made in the format as given overleaf and mailed to the undersigned at the above address. The document is also hosted on BIS website Thanking you, Signature : Name : A.K. Bhatnagar Designation Sc.F & Head (PCD) pcd@bis.org.in; pcd3@bis.org.in Encl: As above.

2 व य पक पर न मस द प रल ख प र षण स ज ञ पन स द भ तदन क प स ड 3( 11588)C तकन क सम तत प स ड 3 प र ष त प ट र ष यम तकन क सम षत, प स ड 3 क समस त सदस य प स ड 3 क सभ उपसषमषतय प ट र ष यम,क य एव स ब ष त उत प द षवभ ग पर द ( प स ड स )क सदस य र ष खन व सभ षनक य मह दय /मह दय, क प य आपक अव कन ह त षनम नष खखत मस द स ग न ह : क रम स ख य मस द स ख य षव य. 1 प स ड 3 (11588 )C द रव त प ट र ल यम ग स स - व ल ष ट )आईएस 4576 क द सर प न क षण ( क पय इस मस द क अव कन क अपन सम मषतय यह बत त ह ए भ ज षक यषद अ तत यह म नक मस द ष ट र य म नक क र प म प रक ष त ह ज य त इस प अम क न म आपक व यवस य अथव क ब म क य कष न ईय आ सकत ह सम मषतय भ जन तक अ ततम ततत : 5 July 2017 सम मषतय क पय स ग न प र र प म अ हस त क ष क भ ज न यव द, भवद य ए.क.भट न ग व ज ञ षनक एफ एव प रम ख(प स ड ) प रषत उपर ष खखत म : pcd@bis.org.in, pcd3@bis.org.in

3 FORMAT FOR SENDING COMMENTS ON BIS DOCUMENTS (Please use A4 size sheet of paper only and type within fields indicated. Comments on each clauses/subclauses/table/fig. etc be started on a fresh box. Information in Column 4 should include reasons for the comments and suggestions for modified wording of the clauses when the existing text is found not acceptable. Adherence to this format, in word document only, facilitates Secretariat s work) Doc. No.: PCD3 (11588)C Revision of IS 4576 ) TITLE: Liquefied Petroleum Gases-Specification (Third LAST DATE OF COMMENTS: 5 July 2017 NAME OF THE COMMENTATOR/ORGANIZATION: Sl. No. Clause/Subclause/ para/table/fig. No. commented Commentator/ Organization/ Abbreviation Type of Comments (General/Editorial/ Technical) Justification Proposed change

4 For Comments Only Doc: PCD3 (11588 )C 5 June 2017 Draft Indian Standard Liquefied Petroleum Gases-Specification (Third Revision of IS 4576) ICS Last date for comments 5 July 2017 Petroleum and Their Related Products of Synthesis or Biological Origin Sectional Committee, PCD 3 FOREWORD This standard was first published in In the first revision, in order to restrict the production of LPG for present as well as for future refineries to a maximum vapour pressure, which is the design pressure of the existing LPG cylinders produced in the country, the vapour pressure of commercial butane-propane mixture had been changed to kgf/cm 2, Max at 65 C from its present range of 10 to 20 kgf/cm 2. The second revision has been taken up as a result of review of this standard in the light of the present day requirements and availability of LPG in the country. In this revision characteristics for composition have been included and residue on evaporation has been deleted. Requirement for total volatile sulphur, hydrogen sulphide have been changed. Dryness has been replaced by free water content. Based on ISO 9162 :1989 requirement for vapour pressure has now been changed to 520, and kpa at 40 C, Max, respectively for butane, butane propane mixture and propane. In this draft revision (third revision) the scope has been modified including LPG for pipeline transmission also. Requirements for LPG for pipeline transmission have been included and sulphur requirement is reduced, to avoid corrosion of pipelines. Packing and marking are not be applicable for LPG for pipeline transmission. Taking into consideration the views of producers and suppliers of liquefied petroleum gases, fuel technologies and the interest of consumers, the Committee decided to relate this standard to the manufacturing practices followed in the country, keeping in view the need for international coordination among the principal standards in this field. Assistance has been derived from the following standards: ISO 9162 : 1989 DIN ASTM D 1835 ASTMD D 1837 ASTM D 1267 ASTM D 2163 ASTM D2784 ASTM D3246 ASTM D6667 Petroleum products Fuels (class F) Liquefied petroleum gases Specification Fluessiggas; propan, propylen, butan and und-butylen, anforderungen in die qualitaet (Liquefied gas; propane, propylene, butane and butylene, quality requirements). Deutscher Normenausschuss Specification for liquefied petroleum (LP) gases Standard Test Method for Volatility of Liquefied Petroleum (LP) Gases Standard Test Method for Gage Vapor Pressure of Liquefied Petroleum (LP) Gases (LP-Gas Method) Standard Test Method for Determination of Hydrocarbons in Liquefied Petroleum (LP) Gases and Propane/Propene Mixtures by Gas Chromatography Standard Test Method for Sulfur in Liquefied Petroleum Gases (Oxy-Hydrogen Burner or Lamp) Standard Test Method for Sulfur in Petroleum Gas by Oxidative Microcoulometry Standard Test Method for Determination of Total Volatile Sulfur in Gaseous Hydrocarbons and Liquefied Petroleum Gases by Ultraviolet Fluorescence

5 ASTM D 1838 ASTM D2420 ASTM D Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer Standard Test Method for Hydrogen Sulfide in Liquefied Petroleum (LP) Gases (Lead Acetate Method) Standard Test Method for Determination of Water in Petroleum Products, Lubricating Oils, and Additives by Coulometric Karl Fischer Titration (Withdrawn 2016) 1 SCOPE This standard prescribes the requirements and methods of sampling and test for all types of liquefied petroleum Gases commercially marked for household, commercial, Industrial applications and pipeline transmission excluding automotive use. 2 NORMATIVE REFERENCES The following Indian Standards contains provisions which, through reference in this text, constitute provisions of this standard. At the time of publication the editions indicated were valid. All standards are subjected to revision and parties to agreements based on this standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below: IS No. Title 1260 (Part 1): 1973 Pictorial marking for handling and labelling of goods : Part 1 Dangerous good (first revision) 1447 (Part 2) : 1992 Methods of sampling of petroleum and its products : Part 2 Sampling of liquefied petroleum gases (LPG) (first revision) 1448 Methods of Test For Petroleum And Its Products (Part 19) : 2015/ ISO 5275 : 2003 : 2015 P 19 Detection of Thiols and Other Sulphur Species - Doctor Test (Second Revision) (or) XRF method (or) UV floresence method ( Part 39) : 2012/ ISO P 39 --Determination of Vapour Pressure Reid Method 3007:1999 (Part 70) : 1968 Methods of test for petroleum and its products: Part 70 Residue in liquefied petroleum gases (Part 72) : 1968 Methods of test for petroleum and its products Part 72 Volatility of liquefied petroleum gases (Part 73) : : 2004 /ISO 8819 Part 73 Liquifiable Petroleum gases - Detection of hydrogen sulphide - Lead aetate method ( Part 152) : 2004/ ISO 6251 Part 152 Liquefied petroleum gases - Corrosiveness to copper - Copper strips test 2825 : 1969 Code for unfired pressure vessels 3196 (Part 1) : 1992 Welded low carbon steel cylinder exceeding 5 litre water capacity for low pressure liquefied gases : Part 1 Cylinders for liquefied petroleum gas (LPG) (fourth revision) ( Part 2) : 2003 / ISO Natural Gas - Calculation of Compression Factor - Part 2 Calculation Using Molar-Composition Analysis ( Part 3) : 2002/ ISO Natural Gas - Determination of Composition with Defined Uncertainty by Gas Chromatography - Part 3 Determination of Hydrogen Helium Oxygen Nitrogen Carbon Dioxide and ( Part 3) : 2007 ISO Hydrocarbons up to C8 using two Packed Columns Natural gas - Determination of water by karl fischer method Part 3 Coulometric procedure

6 3 TERMINOLOGY For the purpose of this standard, the following definition shall apply. 3.1 Liquefied Petroleum Gas (LP Gas or LPG) The term applies to a mixture of certain light hydrocarbons derived from petroleum which are gaseous at normal ambient temperature and atmospheric pressure but may be condensed to the liquid state at normal ambient temperature by the application of moderate pressure LP gases mainly consist of one or more of the following hydrocarbons: a) Propane (C3H8) b) Propylene (C3 H6) c) n-butane (C4 H 10) d) Iso-butane (C4 H10) e) Butylene (C4 H8) Small quantities of one or more of the following hydrocarbons may also be present: a) Ethane (C2H6) b) Ethylene (C2 H6) c) Pentane (C5 H 12) d) Pentene (C 5 H 10) TYPES 4.1 This standard specifies three types of LP gases, based on their principal constituent(s): a) Commercial Butane A hydrocarbon product composed predominantly of butanes, butylene or their mixtures. b) Commercial Butane Propane Mixture A hydrocarbon product composed predominantly of a mixture of butanes and/or butylene with propane and/or propylene c) Commercial Propane A hydrocarbon product composed predominantly of propane, propylene or their mixtures. 5 REQUIREMENTS 5.1 The material shall comply with the requirements given in Table 1 when tested according to appropriate methods given in col 6 of Table Residue of LPG Subject to agreement between the purchaser and the Supplier, the material shall also pass the agreed limits of residue when tested according to IS 1448 [P: 70]. 6 PACKING AND MARKING 6.1 Packing

7 The material shall be packed in suitable cylinders/ containers as agreed to between the purchaser and the supplier and subject to the requirements prescribed by statutory authorities. (For cylinders, see IS 3196 and for comments, see IS 2825). 6.2 Marking The cylinders/containers shall be marked as prescribed by statutory authorities from time to time. They shall bear the labels marked with the following information: a) Name and type of the material; b) Mass in kg of the material in the container; c) Maximum vapor pressure in case of commercial butane-propane mixture only; and d) Manufacturer's name and trade-mark, if any Each cylinder/container shall also be marked with the caution label 'FLAMMABLE' together with the corresponding symbol for labelling dangerous goods [see Fig.18 of IS 1260 (Part 1 )] BIS Certification Marking The cylinder/container may also be marked with the standard mark The use of Standard Mark is governed by the provisions of the Bureau of Indian Standards Act, 1986 and the Rules and Regulations made thereunder. The details of conditions under which the license for the use of the Standard Mark may be granted to manufactures or producers may be obtained from the Bureau of Indian Standards. 7 SAMPLING 7.1 Representative samples of liquefied petroleum gas shall be drawn as prescribed in IS 1447 (Part 2). 7.2 Tests on vapor pressure shall be conducted on individual samples and the rest of the tests shall be conducted on composite samples. Sl No. Table 1 Requirement for Liquefied Petroleum Gases (Clause 5.1) Characteristics Requirement for Commercial Pipeline Transm ission Method of Test, Ref to [P] of IS 1448 /ISO/ASTM (1) (2) (3) (4) (5) (6) (7) (i) Vapour pressure at 40 C, I [P 39] kpa, gauge, Max (Note 1) (Note 2) (Note 2) (ii) Composition, liquid mole percentage a) C2 Hydrocarbons -- Report Report Report b) C3 Hydrocarbons Report Report 95.0Min Report c) C4 Hydrocarbons Report Report 4.0Max Report d) C5 Hydrocarbons and heavier, Max e) Unsaturated Report Report Report Report ( Part 2) / ( Part 3)

8 (iii) (iv) hydrocarbons OR Volatility: [P 72] / D 1837 Evaporation temperature in 0 C for 95 percent by volume at 760 mm Hg Pressure, Max Total volatile Sulphur ppm, Max Copper strip corrosion at 38 C for I h [P 19]/ D2784 D3246 D6667 Not worse than No 1 Not worse than la (v) Hydrogen sulphide Pass Pass Pass 5 ppm max (vi) Free water content: i) at 0 C ii) at other temperatures, ppm by weight, Max None None None No free water 15 (vii) Caustic Zero D 974 ASTM test methods shall be followed till 'P' of IS 1448 methods under revision, are finalized. NOTES [P 152] / D 1838 [P 73] / D2420 (Note3) ( Part 3) / EN 15469/ D Vapour pressure may be determined at any other temperature and converted to 40 C by means of suitable vapour pressure-temperature graph. The same can also be determined by analyzing the gas by means of a gas chromatograph and then using the composition, the vapour pressure can be calculated at 40 C from the standard values of vapor pressures at various temperatures. 2 Each consignment of commercial butane-propane mixture shall be designated by its maximum vapor pressure in kpa at 40"C. Further, if purchaser and the supplier agreed, the minimum vapor pressure of that mixture shall be not lower than 200 kpa gauge compared to the designated maximum vapor pressures and in any case the minimum for the mixture shall be not lower than 520 kpa at 40 C. 3 'Pass' test indicates Hydrogen Sulphide not more than 5 ppm. 4 Subject to agreement between the purchaser and the supplier, odour requirements of LPG may be changed for certain applications when unodourized LPG is required. 5 Product shall contain minimum 20 ppm ethyl mercaptan at the first dispatching location to ensure the detection of odour. To detect the odour, the following procedures may be adopted: 5 ml Doctor Solution+ 8 ml Iso-octane+ Pinch of Sulphur powder in 2S ml stoppered cylinder. Shake and add 2 ml LPG (Aq). Shake slowly by releasing pressure. Odour is adequate if Sulphur turns yellowish brown. P : 75 Odour test method may also be acceptable as a n alternate method.

DOCUMENT DESPATCH ADVICE. Technical Committee: Petroleum and Related Products Sectional Committee, PCD 3

DOCUMENT DESPATCH ADVICE. Technical Committee: Petroleum and Related Products Sectional Committee, PCD 3 DRAFT IN WIDE CIRCULATION DOCUMENT DESPATCH ADVICE REF: DATE Doc:PCD 3(2867)C 02 09 2015 Technical Committee: Petroleum and Related Products Sectional Committee, PCD 3 i) All interested members of PCDC