UL Standards

1DV.1 DR Modification ofClause 1 to replace with the following: 1DV.1.1 DR This part of IEC 60079 standard specifies the requirements, testing and marking of equipment emitting optical radiation intended for use in explosive atmospheres. It also covers equipment located outside the explosive atmosphere or protected by a Type of Protection listed in IEC UL

1DV DR Modification ofClause 1 to replace with the following: This part of IEC 60079 standard specifies alternative requirements for construction, test and marking for electrical equipment that provides Equipment Protection Level  EPL) Ga when single standardised Types of Protection (e.g. Ex “ia” , Ex “ma”, Ex “da”) cannot be applied. This standard also applies

1DV DR Modification ofClause 1 to replace with the following: This part of IEC 60079 standard gives the specific requirements for the construction,testing and marking of electrical equipment, parts of electrical equipment and Ex components with the type of protection encapsulation “m” intended for use in explosive gas atmospheres or explosive dust atmospheres.

1DV DR Modification ofClause 1 to replace with the following: This part of the IEC 60079 standard series applies to users and covers factors directly related to the inspection and maintenance of electrical installations within hazardous areas only, where the hazard may be caused by flammable gases, vapours, mists, dusts, fibres or flyings. It does

1DV DR Modification of Clause 1 to replace with the following: This part ofHEC 60079 document specifes requirements for the construction, testing and marking for Group II electrical equipment with type of protection “n” which includes;sealed devices“nC”, hermetically sealed devices “nC”, non-incendive components“nC” and restricted breathing enclosures“nR”intended for use in explosive gas atmospheres.This part of

1DV.1 DR Modification of the Clause 1 to replace with the following: 1DV.1.1 This part of IEC 60079 standard gives requirements for the design, construction,assessment, verification and marking of rooms used to protect internal equipment: – located in a Zone 1 or Zone 2 or Zone 21 or Zone 22 explosive atmosphere (an area normally

1DV.1 DE Modification ofClause 1, firstparagraph to replace with the following: 1DV.1.1 This standard part of IEC 60079 specifies the requirements for the design,construction, testing and marking of Ex Equipment and Ex Components with type of protection liquid immersion “o” intended for use in explosive gas atmospheres.

1DV DR Modification ofClause 1 to replace with the following: This part of IEC 60079 standard contains the specific requirements for the construction and testing of electrical equipment with pressurized enclosures, of type of protection “p”,intended for use in explosive gas atmospheres or explosive dust atmospheres. It also includes the requirements for pressurized enclosures containing