Unit 2 - Standards, certification & marking Flashcards
1.
Which one of the following letters, when used as a certification number suffix, indicates that apparatus has ‘component certification?
X
C
U
B
U
2.
The letters used to indicate the different EPL levels of explosion protected equipment are?
x, y, z
a, b, c
u, v, w
A, B, C
a, b, c
3.
Apparatus marked [Ex ia] is permissible in which one of the following areas?
Zone 0
Zone 1
Zone 2
Safe area
Safe Area
4.
The purpose of EU Directives such as ATEX 214 Directive 204/34/EU (ATEX 95) is to?
Enable equipment to be produced more cheaply
Make EU border controls more secure
Enable EU nations develop their own standards
Improve trade between EU nations through alignment of technical and legal requirements.
Improve trade between EU nations through alignment of technical and legal requirements.
UKCA: UK Conformity Assessment
Due to Brexit As from 01-Jan-2022.
UKCA marking needs to be marked on all Equipment manufactured in the UK.
5.
Which of the following EPL’s marked on explosion protected equipment may be used in Zone 0?
Ga, Gb, Gc
Gc only
Ga only
Gb only
Ga Only
6.
The recommendations for the installation of electrical systems in hazardous areas are provided by which one of the following standards?
BS EN60079-20
BS EN60079-17
BS EN60079-19
BS EN60079-14
BS EN60079-14
7.
The international abbreviation which is equivalent to the ATEX Catagories is?
EPL
IEC
API
UPS
EPL
8.
The requirment for equipment marked with an EPL Ga would be satisfiied by which one of the following protection types?
Ex ib
Ex ia
Ex e
Exd
Ex ia
9.
If a zone 1 area on an area classification diagram is marked as requiring EPL ‘Ga’ equipment by a risk assessment, this is due to:
The EPL is wrongly specified on the diagram
A higher than normal risk of ignition
A lower than normal risk of ignition
The consequences of ignition are higher than normal.
The consequences of ignition are higher than normal.
10.
EPL is the abbreviation for
Explosion protection level
Enclosure protection level
Equipment protection level
Equipment protection limit
Equipment protection level
11.
The recommendations for the inspection of electrical systems in hazardous areas are given in which one of the following standards?
BS EN50017
BS EN60079-17
BS EN50014
BS EN60079-14
BS EN60079-17
12.
Which one of the following statements indicates equipment suitable for use in flammable gases of surface industries, i.e. above ground?
Group II and Cats M1 and M2
Group I and Cats M1 and M2
Group II and Cats 1, 2 and 3
Group I and Cats 1, 2 and 3
Group II and Cats 1, 2 and 3
14.
Which one of the following EPL’s (Cats) is typically for use in Zone 2, unless otherwise indicated on the Area Classification diagram?
Dc (Cat 3D)
Gb (Cat 2G)
Ga (Cat 1G)
Gc (Cat 3G)
Gc (Cat 3G)
15.
Compliance with the ATEX Product (Equipment) Directive is indicated by which one of the following?
IEC embossed within a hexagon symbol
The CE mark
FLP embossed within a crown symbol
Ex embossed within a hexagon symbol
The CE mark
The CE making indicates compliance with the IEC ATEX directive. The Ex Hex mark is compliance with the European Standard.
UKCA: UK Conformity Assessment
Due to Brexit As from 01-Jan-2022.
UKCA marking needs to be marked on all Equipment manufactured in the UK.
16.
An item of equipment having component certification and marked with a suffix ‘U’ is typically which one of the following?
A flameproof push-button switch
A flameproof motor starter
An electromagnetic relay
A fluorescent light fitting
A flameproof push-button switch.
17.
Equipment for use in hydrogen where the EPL / Cat requirement is Gc / Cat 3 will be marked with which one of the following:
Ex e IIB T4
Ex n II T4
Ex d IIB T5
Ex d IIA T5
Ex n II T4
18.
As a result of a risk assessment, the use of EPL ‘Gc’ (Cat 3G) equipment has been designated for zone 1 in an area classification diagram. This is because
The EPL is wrongly specified on the diagram
There is a lower than normal risk of ignition
The consequences of ignition are higher than normal
The consequences of ignition are lower than normal
The consequences of ignition are lower than normal.
19.
The ‘X’ at the end of a certification number, i.e. EX848123X, indicates
The equipment is unsuitable for outdoor use
The equipment is not resistant to impact
Special installation conditions apply
The equipment can only be installed in a safe area.
Special installation conditions apply.
20.
Which one of the following statements is true regarding comparison of the selection and installation standard versions
IEC60079-14 and
BS EN60079-14?
BS EN60079-14 is more up-to-date the IEC60079-14
They are identical apart from some annexes
There is no correlation between the two standards
They are identical.
They are identical apart from some annexes.
21.
Which one of the following represents how equipment will be marked to indicate an ambient rating higher than normal?
Ex d 11B T5 Ta +60°C
Ex d 11B T5 T60
Ex d 11B T5 60°C
Ex d 11B T5 40°C amb
Ex d 11B T5 Ta +60°C
22.
Category 2 equipment may be installed in?
Zone 2 and Zone 22 only
Zone 20, Zone 21 and Zone 22 only
Zone 1 and Zone 21 and less arduous duties
Zone 0 and Zone 20 and less arduous duties
Zone 1 and Zone 21 and less arduous duties.
23.
Equipment where the certification label is marked II, i.e. Ex e II T6, can be used in which one of the following?
Can be used in all Group II gases and vapours
Can only be used in Group IIA gases and vapours
Can only be used in Groups IIA and IIB gases and vapours
Not suitable for use in an hazardous area
Can be used in all Group II gases and vapours
24.
Ex n is suitable for use in?
An area requiring EPL Gb (Cat 2G) equipment
Only an area requiring EPL Gc (Cat 3G) equipment
Only areas requiring EPL Gb (Cats 2G) equipment
Areas requiring EPL’s Gb and Gc (Cats 2G and 3G) equipment
Only an area requiring EPL Gc (Cat 3G) equipment
25.
Which one of the following represents equipment suitable for use in an area requiring EPL Gb (Cat 2)?
Ex p
Ex u
Ex y
Ex n
Ex p
