GB/T 3836.15-2017: Explosive atmospheres -- Part 15: Electrical installations design, selection and erection

Delivery: 9 seconds. Download (and Email) true-PDF + Invoice.
Get Quotation: Click GB/T 3836.15-2017 (Self-service in 1-minute)
Newer / historical versions: GB/T 3836.15-2017

Preview True-PDF

Scope

This Part of “Explosive Atmosphere” contains the specific requirements for the design,
selection and erection of electrical installations in hazardous areas associated with explosive
atmospheres.
Where the equipment is required to meet other environmental conditions, for example,
protection against ingress of water and resistance to corrosion, additional methods of
protection may be necessary. The method used shall not adversely affect the integrity of the
enclosure.
The requirements of this standard apply only to the use of equipment under normal or near
normal atmospheric conditions. For other conditions, additional precautions may be necessary.
For example, most flammable materials and many materials which are normally regarded as
non-flammable might burn vigorously under conditions of oxygen enrichment. Other
precautions might also be necessary in the use of equipment under conditions of extreme
temperature and pressure. Such precautions are beyond the scope of this Part.
These requirements are in addition to the requirements for installations in non-hazardous
areas.
This Part applies to all electrical equipment including fixed, portable, transportable and
personal, and installations, permanent or temporary.
It applies to installations at all voltages.
This Part does not apply to:
— electrical installations in mines susceptible to firedamp;
Note: This Part may apply to electrical installations in mines where explosive gas atmospheres
other than firedamp may be formed and to electrical installations in the surface installation of
mines.
— inherently explosive situations and dust from explosives or pyrophoric substances (for
example explosives manufacturing and processing);
— rooms used for medical purposes;
— electrical installations in areas where the hazard is due to hybrid mixtures of
combustible dust and explosive gas, vapour or mist.
See Annex H.
5.11 Transportable, portable and personal equipment
5.11.1 General
Due to the demand of the application and enhanced flexibility for use, transportable, portable
or personal equipment may be required to be used in differing areas. Equipment of a lower
EPL shall not be taken into an area requiring a higher EPL, unless it is otherwise protected. In
practice, however, such a limitation may be difficult to enforce - particularly with portable
equipment. It is recommended, therefore, that all equipment meet the requirements of the
location to which the equipment will be exposed which requires the highest EPL. Similarly,
the equipment group and temperature classification should be appropriate for all the gases,
vapours and dusts in which the equipment may be used. Unless suitable precautions are taken,
spare batteries shall not be taken into the hazardous area.
5.11.2 Transportable and portable equipment - Gas
Unlike equipment which is permanently installed, transportable or portable equipment may
occupy the hazardous area on a temporary basis. Such equipment may include, for example,
emergency generators, electrical arc welders, industrial lift (fork) trucks, air compressors,
powered ventilation fans or blowers, portable electrically powered hand-tools, certain types of
test and inspection equipment.
Equipment that may be transported or carried into a hazardous area shall be to the appropriate
equipment protection level. Where there is a need to use transportable or portable equipment
in a hazardous area for which the normally required EPL is not obtainable, a documented
program for risk management shall be implemented. This program shall include appropriate
training, procedures and controls. A safe work permit shall be issued appropriate to the
potential ignition risk created by the use of the equipment (see Annex D).
If plugs and sockets are present in a hazardous area, they shall be to the required EPL for the
area. Alternately, they shall only be energized or connections made under a safe work
procedure (see Annex D).
5.11.3 Personal Equipment - Gas
Items of personal equipment which are battery or solar operated are sometimes carried by
personnel and inadvertently taken into a hazardous area.
A basic electronic wrist watch is an example of a low voltage, electronic device which has
been independently evaluated and found to be acceptable for use in a hazardous area under
both historic and current EPL requirements.
All other personal battery or solar operated equipment (including electronic wrist watches
incorporating a calculator) shall:
a) conform to a recognised type of protection appropriate to EPL, gas group and

Basic Data

Standard ID	GB/T 3836.15-2017 (GB/T3836.15-2017)
Description (Translated English)	Explosive atmospheres -- Part 15: Electrical installations design, selection and erection
Sector / Industry	National Standard (Recommended)
Classification of Chinese Standard	K35
Classification of International Standard	29.260.20
Word Count Estimation	78,729
Date of Issue	2017-12-29
Date of Implementation	2018-07-01
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China