ATEX STANDARDS

Chemical Explosions occurs due to the:

• Sudden release of pressure without any reaction

• Rapid nuclear chain reaction

• Rapid combustion or decomposition of flammable substances

• None of these

ATEX is an abbreviation of:

• ATmosphere EXtensive

• ATmosphère EXplosible

• ATmosphere EXtreme

• ATmosphere EXtra

ATEX 1999/92/EC (Workplace Directive) focuses on:
(Multiple correct answers)

• Enforces zoning classifications

• Workplace safety and employer responsibilities

• Mandates appropriate equipment use

• Applies to manufacturers

For Gases / Vapours, "Zone 0" indicates:

• Continuous presence of explosive atmosphere

• Occasional occurrence of explosive atmosphere

• Rare and short-term presence

Which part of the below ATEX code, indicates that the equipment features "Intrinsic Safety"

• T4

• Gb

• ib

• Ex

Which of these is the safest temperature class where the temperature of any surface within the equipment does not exceed 85c

• T1

• T2

• T5

• T6

In IP rating (Ingress Protection), the second digit denotes:

• Protection against solid objects

• Protection against water

• Protection against gas

• None

Which of these statement is true for Encapsulation (Ex m):

• Equipment is enclosed in a sealed housing that can withstand internal explosions and prevent flame propagation

• Bonding and grounding of equipment to prevent electrostatic discharges

• Electrical components are embedded in a resin or gel to prevent sparks and heat buildup