03 Design Testing Certification Installation and Maintenance in India Ex-Magazine 2011 Low

Standardization in the field ofExplosion Protecion

Bureau of Indian Standards (BIS) The roots of the Bureau of Indian Stand-ards (BIS) date back to India’s pre-independ-ence era. During this period standardization activity was largely sporadic and was con-fined to a few government organizations. To-day, BIS is the national code laying body in India, established under the Bureau of Indian Standards Act 1986. Its main objective is the harmonious development of the standardisa-tion activities, quality certification of goods and services, and marking.

Standards Development Process The standards formulation activity within BIS is carried out through 14 Division Coun-cils, each responsible for its respective field of engineering, science and technology. The Electrotechnical Division Council (ETDC) is responsible for the standardization in the field of electrical power generation, trans-mission, distribution and utilization equip-ment, insulating materials, winding wires, measuring and process control instruments and primary and secondary batteries. The work of the Electro Technical Division Council carried out through 37 Sectional Committees. The primary duty of the Section-al Committees are the development and sys-tematic review of Indian Standards within their field. One of the EDTC Sectional Com-mittees is ET 22 - ›Electrical Apparatus for

Page 12 | Ex-Magazine 2011

Design, testing, certification, installation & maintenance of electrical equipment in hazardous locations in Indiaby Wolfgang Berner, Ashwini Bondale and Manikandan Parthasarathy

While there has been done a lot of harmo-nization in area of hazardous location classi-fication and regarding the equipment design, testing and installation around the world over the last decades, there are still significant differences in the product design, testing and installation requirements between the Inter-national Electrical Commission (IEC) and Indi-an system. This makes it difficult for interna-tional manufacturers and end-users. The paper will provide and overview on the codes and standards currently used for the testing, certification, installation and maintenance of explosion protected electri-cal equipment in hazardous locations in In-dia. It will also discuss the basic requirements and procedures for importers for getting CCoE (Chief Controller of Explosives) product approvals by PESO (Petroleum and Explosion Safety Organization) or DMGS (Director Gen-eral of Mines Safety), and the challenges of this system.

The following topics will be addressed in the paper:> Product codes and standards> Product testing and certification> Product conformity assessment proce-

dures> Product approval - Statutory acts and

rules> Product selection, installation and main-

tenance> Differences and alignment with Interna-

tional codes, standards, processes and procedures (ISO, IEC, NEC and CEC)

Legislation, Standards and Technology

Explosive Atmospheres‹. Its scope is to prepare guidelines and re-quirements for electrical equipment for use in explosive atmospheres with the possible presence of ignitable gas, vapor, liquid, or dust. This includes area classification, equip-ment design and construction, testing, selec-tion, installation, inspection, maintenance, repair and overhaul of explosion protected equipment. ET 22 has in principle decided to further harmonize the national standards with corre-sponding international standards. Therefore, the standardization activity at national level closely follows that of the International Elec-trotechnical Commission. ET 22 participates in the standardization activity at international level. India is a participating member of the IEC Technical Committee TC 31 ›Equipment for Explosive Atmospheres‹.

International Codes and Standards and their Relevance in the Indian Scenario IEC is the international body for develop-ing codes and standards for electrical appa-ratus used in hazardous areas. CENELEC has this role in Europe. The situation is slightly different in the USA, where the National Electrical Code (NEC) covers the installation requirements, and product codes and stand-ards are formulated by organizations like Un-derwriters Laboartories (UL),the International Society of Automation (ISA), and the Ameri-can National Standards Institute (ANSI). Many countries in the world, including India, in certain cases accept these international codes and standards for imported explosion protected products. At present, the various Indian codes and standards for explosion protected equipment are very old. Many of the codes and stand-ards are based on European EN, Internation-

Ex-Magazine 2011 | Page 13

al IEC, British or German VDE standards which have undergone multiple changes and updates in the meantime. Europe for example has adopted the ATEX Directives 94/9/EC for manufacturers and 99/92/EC for end-users, and the CENELEC standards are completely harmonized with the IEC standards. This has led to the situation that BIS standards are not up to date with the international codes and standards anymore. Due to this explosion protected products designed, tested and approved to Indian BIS standards are not meeting the requirements to the current international markets, and vice versa. This is a challenge for Indian manu-facturers wanting to export their equipment to countries based on an up-to-date IEC sys-tem, and for importers to India. Products have to be designed, tested and approved to both systems. At present various BIS codes and stand-ards for explosion protected equipment are being harmonised with IEC standards. How-ever some standards, like the one for the se-lection and installation of explosion protect-ed electrical equipment, are adopted with a lot of modifications and variations as Indian standards. This puts Indian manufacturers and users at a disadvantage with internation-al manufacturers and users. One example is that IEC allows the use of equipment of type of protection Increased Safety ›e‹ in Zone 1 locations whereas the BIS standard does not permit this, and restricts its use to Zone 2 ar-eas only. This leads to additional cost for us-ers due to the required use of equipment of type of protection Flameproof Enclosures ›d‹ in places where Ex e / Ex d equipment could be used. In addition, with the current standards de-velopment procedures and processes within BIS, the adoption of the IEC standards takes

a very long time. A list of the currently published standards developed by ET 22 is shown in Table 4.

Product testing and certification The testing and certification of explosion protected products in India are being con-ducted to the relevant Indian standards un-der the product licensing scheme of the Bu-reau of Indian Standards. The tests are carried out in one of the test laboratories recognized by the Director Gen-eral of Mines Safety (DGMS), Chief Controller of Explosive (CCoE) and BIS: In India, the Central Institute of Mining & Fuel Research (CIMFR) in Dhanbad, the Cen-tral Power Research Institute (CPRI) in Ban-galore, the Electronics Regional Testing Lab (ERTL) in Kolkata, Karandikar Laboratories Pvt. Ltd. (KLPL) and Intertek Lab offer product testing and certification facilities for explo-sion protected equipment. Karandikar Labo-ratories also has a technical cooperation with BASEEFA in England. In case of products imported from other countries, two different mechanisms are rel-evant in India. To obtain DGMS approval of such products, testing at one of the DGMS recognised laboratories in India is essential as well as the field trail testing. Compliance reports from the country of origin of such products are currently not acceptable. For PESO approval, on the other hand, test re-ports from the foreign test laboratory are considered (for further information see para-graph titled Product Approval).

Product Conformity Assessment The Bureau of Indian Standards BIS is empowered to license manufacturers for the use of the Indian Standards Quality Mark for explosion protected equipment, and is gov-erned by the provisions of the Bureau of Indi-an Standards Act 1986. Such a manufactur-ing license is only needed for equipment with types of protection Flameproof Enclosures ›d‹ and Intrinsic Safety ›i‹. Other types of protec-tion are not covered under the BIS quality li-cense and mark scheme. The BIS license is needed to receive a product approval from the relevant statutory bodies, which is described in the following paragraph.

Product approval – statutory acts and rules

Petroleum and Explosive Safety Organization The main objective of the Petroleum Ex-plosive Safety Organization (PESO) – formerly Department of Explosives – is to ensure safe-ty and security of public and property from fire and explosion. The organization as a statutory authority which is entrusted with the administration of the Explosives Act, 1884 and the Petroleum Act, 1934, and the rules framed under these Acts; to regulate and monitor the manufac-ture, import, export, transport, possession, sale and use of explosives, petroleum prod-ucts and compressed gases as envisaged under these Acts.

These Acts and their structures are de-scribed briefly in the following.

Explosive Act 18841. Explosives Rules, 20082. Gas Cylinder Rules, 20043. Static & Mobile Pressure Vessels (Un-

fired) Rules, 19814. Notification No. GSR 625(E) dated

07.08.1983 regarding Acetylene Genera-tion

Petroleum Act 19341. Petroleum Rules, 20022. Calcium Carbide Rules, 19873. Cinematography Film Rules, 1948

The basic activities of the Petroleum explo-sive Safety Organisation for the above men-tioned Acts and Rules are described briefly in the following.

Explosive Rules 2008 The major work of PESO under the Explo-sives Rules, 2008 relates to granting approv-al, licences for manufacture of explosives, authorization of explosives, storage of explo-sives, import/export of explosives, transport of explosives by road and packaging for ex-plosives etc. prescribing safe procedures and methods for manufacture of various types of explosives including the tools, equip-ments and machineries. The organization also carries out investi-gation of accidents involving explosives and destruction of unserviceable and seized ex-plosives in the interest of public safety and security. In addition PESO also carries out inspec-tion and audit of the new premises for verifi-cation/endorsement at the time of grant of li-cences/approvals and also periodic inspections of the licensed/approved premis-es.

Petruleum Rules 2002 Petroleum has been defined under the Act and Rules as liquid hydrocarbon or a mixture of liquid hydrocarbons and any inflammable mixture containing liquid hydrocarbons. The work relating to administration of these Rules covers the approval of refineries, petrochem-ical, oil and gas processing facilities, trans-port of petroleum by water, land and pipeline, flameproof and other safety equipments for use in areas with flammable gases, and the licensing of storage installations, tank trucks for transportation by road and air. The organ-ization carries out inspections of these prem-ises to ensure the compliance with the rules and safety measures. The Petroleum Explosive Safety Organisa-

Design, testing, certification, installation & maintenance in India


tion is currently involved in the regulation of over 300 000 premises all over India.The ap-proval of the Chief Controller of Explosives (CCoE) is mandatory for all electrical equip-ment installed in potentially explosive atmos-pheres. Rule 106 of the Petroleum Rules 2002 de-fines that all electrical equipment used in hazardous locations requires a CCoE approv-al. The approval of such equipment is there-fore limited to only such areas falling within the jurisdiction of the Petroleum and Explo-sives Safety Organization. The Chief Controller of Explosives permits the use of equipment with types of protection Flameproof Enclosures ›d‹, Intrinsic Safety ›i‹, and Encapsulation ›m‹ for use in Zone 1 haz-ardous areas. Non-sparking n and Increased Safety ›e‹ equipment are permitted in Zone 2 areas only.

Process for CCoE Approval for Explosion Protected Equipment Both, electrical equipment for use in haz-ardous location manufactured in India or manufactured outside of the country and im-ported into India, need a PESO approval be-fore they can be installed and be put in use. Table1 describes the procedure how to obtain the PESO approval for electrical equipment manufactured in India. Table 2 shows the procedure to obtain a PESO approval for imported electrical equip-ment:

Requirements Description

1 Infrastructuralfacilities

Details of infrastructural facilities for production available with manufacturer. This includes details of manufacturing works, equip-ment available, testing facilities available, technical manpower availability and quality control setup.

2 Engineeringinfrastructure

Details of infrastructure available for providing engineering back up for the products marketed.

3 Equipmentdescription

Technical details of the equipment including engineering drawings.

4 Certification Certificate from approved test labs confirming that the prototype of the equipment has passed the tests prescribed by the relevant standards.

5 BIS license Copy of the BIS license confirming that the manufacturing of the equipment is covered under a quality control scheme. This require-ment is mandatory for equipment of type of protection Flameproof Enclosures ›d‹. For other types of explosion protected equipment, the CCoE grants approval just based on a test certificate.

Note 1: The above mentioned documents have to be submitted before or during starting the manufacturing of the equipment.


Requirements Description

1 Manufacturer's Company Profile

Details of the profile of the manufacturer to be submitted.

2 Previous clients/projects name list

Profile of the user of such type of equipment in other countries to be submitted.

3 Company profile of theIndian agent

Profile of the Indian agent for the manufacturer in the country.

4 Infrastructural facilities Infrastructural facilities available with the Indian agent for providing technical support for the equipment in the country.

5 Agreement between ma-nufacturer and Indian agent

A copy of the agreement between manufacturer and the Indian agent spelling out the responsibilities for providing technical back up for the equipment and training support to personnel of the Indian agent for such support to be submitted.

6 Technical description of equipment

Technical description of the equipment including draw-ings wherever applicable.

7 Certification from IEC or EN notified bodies

Certification for the equipment from an IEC or ATEX noti-fied body. The certificate should also include both proto-types as well as conformity assessment certification (cer-tificates like ATEX, IECEx etc.).

Note 1: Foreign vendors and original equipment manufacturers are required to receive the PESO approval certificate before supplying the equipment to India.Note 2: the above mentioned documents have to be submitted before or during starting the manufacturing of the equipment.

Table 1: PESO approval for equipment manufactured in India

Table 2: PESO approval for equipment imported into India


Selection of Equipment per ZoneIndian statutory and regulatory organizations like PESO and BIS as well as consultants like Engineers India Limited (EIL) follow the Indi-an Standard IS 5571-2009 ›Guide for Selection and Installation of Electrical Equipment in Hazardous Areas (other than Mines)‹ for se-lecting and installing equipment in hazardous locations. Table 3 lists the equipment type of protec-tion and its suitability for the appropriate haz-ardous location.

Installation of Equipment Electrical installations in hazardous areas

shall comply with the following requirements in addition to the appropriate requirements in non-hazardous areas. The electrical apparatus must be used within power, current, frequency, duty ratings and such other characteristics. It must be al-so ensured that temperature classification for the apparatus has been established for above ratings. The selection and installation of the elec-trical apparatus follows IS 5571-2000 ›Guide for selection of electrical equipment for haz-ardous area‹ in conjunction with IS 13408-1992 ›Code of practice for the selection, in-stallation and maintenance of electrical apparatus for use in potentially explosive at-mospheres (other than mining application or explosive processing manufacture)‹.


Area classification, selection, installation and maintennace of equipment

Area classification As described above, the Petroleum Explo-sive Safety Organisation has been entrusted with the administration of two important Acts of the Government of India. One is the Explo-sives Act. 1894 and the other one is the Pe-troleum Act. 1934. Three important safety regulations, the Petroleum Rules 2002, Static & Mobile Pres-sure Vessels Rules 1981 and Gas Cylinder Rules 1981 fall within the jurisdiction of the above Acts. These regulations cover safety in activities ranging from refining, handling, transportation to storage of petroleum as well as other flammable compressed gases. The Petroleum Rules 2002, provide specif-ic directions in regards to hazardous areas, their classification, the extent of hazardous areas and the selection of equipment for use in various types of hazardous areas. These rules are used in conjunction with the Indian Standard IS 5572-1994 ›Classifica-tion of hazardous areas (other than mines) having flammable gases & vapors for electri-cal installation‹, using the IEC-based zone classification system.

Selection of Equipment The following information is required for proper selection of explosion protected equipment in hazardous areas:> Classification of hazardous area> Temperature class and ambient tempera-

ture> Gas group classification> Environmental condition

Type of Protection Relevant IS Standard Suitable for Zone

Intrinsic Safety Ex ›ia‹ IS/IEC 60079-11 - 2006 Zone 0, 1 and 2

Intrinsic Safety Ex ›ib‹ IS/IEC 60079-11 - 2006 Zone 1 and 2

Flameproof Enclosures Ex ›d‹ IS/IEC 60079-1 - 2007 Zone 1 and 2

Pressurized or Purged Ex ›p‹ IS/IEC 60079-2 - 2007 Zone 1 and 2

Encapsulation Ex ›m‹ IS/IEC 60079-18 - 2004 Zone 1 and 2

Powder Filled Ex ›q‹ IS/IEC 60079-5 - 2007 Zone 1 and 2

Oil Immersed Ex ›o‹ IS 7693IEC 60079-6-1995

Zone 1 and 2

Increased Safety Ex ›e‹ IS/IEC 60079-7 - 2006* Zone 2

Non-Sparking ›n‹ IS/IEC 60079-15 - 2005 Zone 2

Note *: Internationally the type of protection Ex e is allowed in Zone 1 areas per IEC 60079-7 and IEC 60079-14. As per Indian Standard IS 5571 ›Guide for Selection and Installation of Electrical Equipment in Hazardous Areas (other than Mines)‹ an associated terminal housing of type Ex e is allowed in Zone 1. However other Ex e appa-ratus is not allowed in Zone 1, and is allowed in Zone 2 only.

Table 3: Equipment type of protection and hazardous location suitability

sessment scheme (IECEx scheme). It is es-sential that the IEC codes and standards per-taining to explosion protected electrical equipment and related aspects are adopted as ›as-is‹ Indian standards. This would en-sure the acceptance of Indian products at a level with international products, and would also remove disadvantage for Indian manu-facturers competing in the world market, which then creates a level playing field for Indian manufacturers with international man-ufacturers and vice-versa. This also would allow the Bureau of Indi-an Standards as member of the IEC to issue a BIS marking license to foreign manufacturers and their Indian subsidiaries and facilities based on the available IECEx test report, cer-tificate and quality assessment report QAR. There is no point of re-testing the same prod-uct again to comply with the IS/IEC 60079 se-ries of Indian standards. Furthermore the guidelines for statutory approval of installations in hazardous areas need to be updated and streamlined to com-ply with IEC 60079-14. This should be done jointly between BIS, users, authorities having jurisdiction, third party inspection agencies and equipment manufacturers.


> Type of Protection Flameproof Enclosures ›d‹ Flameproof equipment having flange joints

must be installed in such a way that there is no solid structural obstacle near the flange joints. The minimum clearance shall comply with the standard require-ments.

Flameproof joints shall be protected against corrosion and ingress of water. Silicon grease may be used for protection of flange joints from corrosion. The flange joint should not be tapped for preventing ingress of water. The use of gaskets is al-lowed only when permitted by the equip-ment documentation.

> Terminals All terminals in equipment with type of

protection Ex e, Ex i, or Ex n shall be either individually certified or certified along with the equipment.

Hazardous areas like coal mines and oth-er mines are covered under the standard IS 9959-1980 ›Guide for the selection of electri-cal and electronic equipment for coalmines‹ and IS 4501-1967 ›Code of practice for instal-lation and maintenance of Ex equipment in mines‹. The installations in hazardous locations have to be approved by statutory authorities like the Petroleum and Explosives Safety Or-ganisation (PESO), the Director General of Mines Safety (DGMS) or the Director General of Factory Advise Service and Labor Institute (DGFASLI), depending on the hazardous area. This is very often a complicated and time consuming process.

Inspection and Maintenance of Equipment The basic inspection and maintenance re-quirements for electrical equipment used in hazardous location electrical equipment are covered in the Indian standard IS 13408-1992 ›Code of practice for the selection, installa-tion and maintenance of electrical apparatus for use in potentially explosive atmospheres (other than mining application or explosive processing manufacture‹. The current standards in India harmonized in this filed with international IEC standards are IS/IEC 60079-17 and IS/IEC 60079-19.

Conclusion

The Bureau of Indian Standards BIS needs to establish procedures and process-es to adopt the IEC codes and standards without any change and loss of time as Indi-an Standards. It is not logical to review IEC codes and standards again, after they have been reviewed, commented, changed and voted on at the IEC level. The role of the code and standards mak-ing committee ET 22 should be to review the draft IEC standards, and the BIS should ac-tively represent the recommendations of ET 22 at the IEC level and meetings. Once the IEC code and standard has been revised and adopted, it should be adopted as Indian Standard without any change and delay, thus bringing Indian Standards at par with Inter-national Standards. It is important for India to adopt the inter-national IEC standards and the processes and procedures of the IECEx conformity as-

IS Standard Title of Indian Standard IEC Standard Title of IEC Standard Status

IS/IEC 60079-0: 2004

Electrical apparatus for explosive gas atmospheres – General Requirements

IEC 60079-0 Ed 5 2007/10

Explosive atmospheres Part 0 : Equipments-General Requi-rements

Latest Version Under Printing

IS/IEC60079-1: 2007

Explosive atmospheres Part 1: Euipment Protection by Flame-proof Enclosures ›d‹

IEC 60079-1 Ed 6 2007/04

Explosive atmospheres Part1-Equipment Protection by Fla-meproof Enclosures ›d‹

Latest Version Printed as IS

IS 9735-2003/ IEC60079-1-1: 2002

Electrical Apparatus for explosive gas atmospheres – Flame-proof enclosures ›d‹-Method of test for ascertainment of maxi-mum experimental safe gap (First Revision)

IEC 60079-1-1:2002/07now merged with IEC 60079-20-1:2010

Electrical apparatus for explosive gas atmospheres Part 1-1: Flameproof enclosures ›d‹: Method of test for ascer-tainment of maximum experimental safe gap

2002 Version Printed as IS

IS / IEC60079-2: 2007

Explosive atmospheres Part 2: Equipment Protection by Pres-surized enclosures ›p‹

IEC 60079-2 Ed 5 2007/02

Explosive atmospheres Part 2: Equipment Protection by Pressurised enclosures ›p‹


IS 7820: 2004/ IEC60079-4: 1975

Electrical Apparatus for explosive gas atmospheres: Method of test for ignition temperature

IEC 60079-4:1975 now merged with IEC 60079-20-1:2010

Electrical apparatus for explosive gas atmospheres Part 4: Method of test for ignition temperature


IS 7724-2004/ IEC60079-5:1997

Sand filled electrical apparatus for use in explosive atmos-pheres

IEC 60079-5Ed 3 2007/03

Explosive Atmospheres Part 5: Equipment Protection by Powder filling ›q‹


IS 7693-2004/ IEC60079-6: 1995

Electrical Apparatus for explosive gas atmospheres – Oil immersion ›o‹

IEC 60079-6 Ed 3 2007/03

Explosive atmospheres Part 6: Equipment Protection by Oil immersion ›o‹


IS / IEC60079-7 2006

Explosive atmospheres – Equipment Protection by Increased Safety ›e‹

IEC 60079-7Ed 4 2006/07

Explosive atmospheres Part 7: Equipment Protection by In-creased safety ›e‹


IS 5572-2009 Classification of hazardous areas (other than mines) having flammable gases & vapours for electrical installation (Third Re-vision)

IEC 60079-10-1 Ed 1 2008/12

Explosive gas atmospheres Part 10-1: Classification of areas – Explosive gas atmopheres

IEC Code printed with national dif-ferences

IEC 60079-10-2 Ed 1 2009/04

Explosive gas atmospheres Part 10-2: Classification of areas – Combustistible dust atmospheres

Under Adoption

IS / IEC60079-11 2006

Electrical Apparatus for explosive gas atmospheres – Intrinsic Safety ›i‹

IEC 60079-11Ed 6 2011/06

Explosive atmospheres Part 11: Equipment protection by in-trinsic safety ›i‹


IS 9570-1980 Classification of flammable gases & vapours with air according to their maximum experimental safe gaps and minimum igniting currents

IEC 60079-12:1978 now merged with IEC 60079-20-1:2010

Electrical apparatus for explosive gas atmospheres Part 12: Classification of mixtures of vapours with air according to their maximum experimental safe gaps and minimum igniting currents


IS 11064: 1984 Guide for construction & use of rooms or buildings protected by pressurization for installation of electrical apparatus for ex-plosive gas atmospheres

IEC 60079-13Ed1 2010/10

Explosive atmospheres – Part 13: Equipment protection by pressurized room ›p‹


IS 5571-2009 Guide for selection & installation of electrical equipment for hazardous area (other than mines) (third Revision)

IEC 60079-14Ed 4 2007/12

Explosive Atmospheres Part 14: Electrical installations -De-sign, Selection & Erection

IEC Code printed with national dif-ferences

IS/IEC 60079-15 2005

Electrical Apparatus for explosive gas atmospheres Part 15: Construction, Test & Marking of Type of protection ›n‹ Electri-cal Apparatus

IEC 60079-15 Ed 4 2010/01

Explosive atmospheres – Part 15: Equipment protection by type of protection ›n‹


IS/IEC 60079-16 1990

Electrical Apparatus for explosive gas atmospheres Part 16: Artificial Ventilation for the protection of analyzer houses

IEC 60079-16Ed 1 1990/05

Electrical Apparatus for explosive gas atmospheres Part 16: Artificial Ventilation for the protection of analyzer houses


IS 13408 (Part 1) – 1992

Code of practice for the selection, installation & maintenance of electrical apparatus for use in potentially explosive atmos-pheres (other than mining application or explosive processing manufacture) Part 1: General recommendation

Withdrawn

IS/IEC 60079-17 2007

Explosive Atmospheres (Other than mines & explosives) Part 17: Electrical Installations - Inspection & Maintenance

IEC 60079-17 Ed 4 2007/08

Explosive Atmospheres Part 17: Electrical installations – inspection & maintenance

2006 VersionPrinted as IS

IS/ IEC 60079-18 2004

Electrical Apparatus for explosive gas atmospheres Part 18: Construction, Test & Marking of Type of protection ›m‹ Electri-cal Apparatus

IEC 60079-18Ed 3 2009/05

Explosive atmospheres – Part 18: Equipment protection by encapsulation ›m‹

Latest Version under printing

IS/IEC 60079-19 2006

Explosive atmospheres Part 19: Equipment. Repair, overhaul & reclamation

IEC 60079-19Ed 3 2010/11

Explosive atmospheres Part 19: Equipment. Repair, overhaul & reclamation


IEC/IS 60079-20 1996

Electrical Apparatus for explosive gas atmospheres Part 20: Data for flammable gases & vapours relating to use of electri-cal apparatus

IEC 60079-20-1 Ed1 2010/01

Explosive atmospheres – Part 20-1: Material characteristics for gas and vapour classification – Test methods and data


IS/IEC 60079-25 2003

Electrical Apparatus for explosive gas atmospheres Part 25: Intrinsically Safe Systems

IEC 60079-25 Ed 2 2010/02

Explosive atmospheres – Part 25: Intrinsically safe electrical systems


IEC 60079-26Ed 2 2006/08

Explosive atmospheres Part 26: Equipment with Equipment Protection Level (EPL) Ga

Under Printing

IEC 60079-27 Ed 2 2008/01

Explosive atmospheres Part 27: Field bus intrinsically safe concept (FISCO)

Under Printing



Table 4: List of Indian and IEC standards for hazardous areas


IS Standard Title of Indian Standard IEC Standard Title of IEC Standard Status

IEC 60079-28 Ed 1 2006/08

Explosive atmospheres Part 28: Protection of Equipments & transmission system using optical radiation

Under Printing

IEC60079-29-1Ed 1 2007/08

Explosive Atmospheres Part 29-1: Gas Detectors-Perfor-mance requirements of detectors for flammable gases

Under Printing

IEC60079-29-2 Ed 1 2007/08

Explosive Atmospheres Part 29-2: Gas Detectors-Selection, installation, use and maintenance of detectors for flammable gases and oxygen

Under Printing

IEC60079-29-4 Ed 1 2009/11

Explosive atmospheres – Part 29-4: Gas detectors - Perfor-mance requirements of open path detectors for flammable gases

To be adopted

IS 14774 (Part 1) – 2000

Resistance trace heating in potentially explosive atmospheres Part 1: General & testing requirements

IEC60079-30-1Ed1 2007/01

Explosive atmospheres Part 30-1: Electrical resistance trace heating – General & testing requirements

Under Printing

IS 14774 (Part 2) – 2000

Resistance trace heating in potentially explosive atmospheres Part 2: Informative application guide for design, installation and maintenance

IEC60079-30-2 Ed 1 2007/01

Explosive atmospheres Part 30-2: Electrical resistance trace heating – Application guide for design, installation & mainte-nance

Under Printing

IEC 60079-31 Ed 1 2008/11

Explosive atmospheres: Part 31: Equipment Dust Ignition Protection by enclosure ›t‹

Under Printing

IS 5679-1986 Miners Cap lamp assemblies (incorporating lead acid type bat-teries)

IEC 62013-1 Ed 2 2005/10

Cap lights for use in mines susceptible to firedamp Part 1: General requirement – Construction & testing in relation to risk of explosion

To be adopted

IEC 62013-2 Ed 2 2005/10

Cap lights for use in mines susceptible to firedamp Part 2: Performance & other safety related matters

To be adopted

IS 9836-1981 Exploders

IS 9959-1980 Guide for selection of electrical & electronic equipment for coal mines

Under Revision

IS 4051-1967 Code of Practice for installation & maintenance of electrical equipment in mines

Under Revision

IS 14154 (Part 1) – 1996

Electrical apparatus with protection by enclosure for use in the presence of combustible dusts: Part 1 Specification for apparatus

To be withdrawn

IEC 61241-0 Ed 1 2004/07*

Electrical apparatus for use in the presence of combustible dust Part 0: General Requirements

Under Printing

IS 12315 (Part 1) – 1988

Method of determining the minimum ignition temperature of dusts Part 1: Dust layer on a heated surface at a constant tem-perature

IEC 61241-2-1 Ed 1 1994/12

Electrical apparatus for use in the presence of combustible dusts: Part 2: Test methods- Section 1: Method of determi-ning the minimum ignition temperature of dust

Under Printing

IEC/ TS 61241-2-2 Ed 1 1993/08*

Electrical apparatus for use in the presence of combustible dusts: Part 2: Test methods- Section 2: Method of determi-ning the electrical resistivity of dust in layers

Under Printing

IS 12315 (Part 2) – 1988

Method of determining the minimum ignition temperature of dusts Part 2: Dust cloud in a furnace at a constant temperature

IEC 61241-2-3 Ed 1 1994/09*

Electrical apparatus for use in the presence of combustible dusts: Part 2: Test methods- Section 3: Method of determi-ning the minimum ignition energy of dust / air mixture

Under Printing

IEC 61241-4 Ed 1 2001/03

Electrical apparatus for use in the presence of combustible dusts: Part 4: Type of protection ›pD‹

Under Printing

IS/IEC 61241-11: 2005

Electrical apparatus for use in the presence of combustible dusts: Part 11: Protection by intrinsic safety ›iD‹

IEC 61241-11 Ed 1 2005/10

Electrical apparatus for use in the presence of combustible dusts: Part 11: Protection by intrinsic safety ›iD‹


IS 15142:2002 Guide to the use of Electrical Apparatus for potentially explo-sive atmospheres in the presence of combustible dust

To be withdrawn

IS 14154 (Part 2) – 1997

Electrical apparatus with protection by enclosure for use in the presence of combustible dusts: Part 2 Guide to selection, in-stallation & maintenance

To be withdrawn

IS/IEC 61241-14: 2004

Electrical apparatus for use in the presence of combustible dusts Part 14: Selection & Installation

IEC 61241-14 Ed 1 2004/07*

Electrical apparatus for use in the presence of combustible dust part 14: Selection & Installation

2004 version printed as IS

IEC 61241-17 Ed 1 2005/01*

Electrical apparatus for use in the presence of combustible dusts Part 17: Inspection & maintenance of electrical in-stallations in hazarous areas

Withdrawn by IEC

IS/IEC 61241-18: 2004

Electrical apparatus for use in the presence of combustible dusts: Part 18: Protection by encapsulation ›mD‹

IEC 61241-18 Ed 1 2004/08*

Electrical apparatus for use in the presence of combustible dust Part 18: Protection by encapsulation ›mD‹

2004 version printed as IS

* Note: In future the series of IEC Standards IEC 61241 will be merged with the relevant standards of series IEC 60079

Documents

03 Design Testing Certification Installation and Maintenance in India Ex-Magazine 2011 Low