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COMPEX > Unit 2 - Standards, certification & marking > Flashcards

Unit 2 - Standards, certification & marking Flashcards

1
Q

1.
Which one of the following letters, when used as a certification number suffix, indicates that apparatus has ‘component certification?

X
C
U
B

A

U

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2
Q

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

a, b, c

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3
Q

3.
Apparatus marked [Ex ia] is permissible in which one of the following areas?

Zone 0
Zone 1
Zone 2
Safe area

A

Safe Area

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4
Q

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.

A

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.

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5
Q

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

A

Ga Only

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6
Q

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

A

BS EN60079-14

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7
Q

7.
The international abbreviation which is equivalent to the ATEX Catagories is?

EPL
IEC
API
UPS

A

EPL

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8
Q

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

A

Ex ia

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9
Q

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.

A

The consequences of ignition are higher than normal.

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10
Q

10.
EPL is the abbreviation for

Explosion protection level

Enclosure protection level

Equipment protection level

Equipment protection limit

A

Equipment protection level

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11
Q

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

A

BS EN60079-17

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12
Q

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

A

Group II and Cats 1, 2 and 3

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13
Q

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)

A

Gc (Cat 3G)

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14
Q

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

A

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.

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15
Q

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

A flameproof push-button switch.

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16
Q

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

A

Ex n II T4

17
Q

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

A

The consequences of ignition are lower than normal.

18
Q

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.

A

Special installation conditions apply.

19
Q

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.

A

They are identical apart from some annexes.

20
Q

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

A

Ex d 11B T5 Ta +60°C

21
Q

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

A

Zone 1 and Zone 21 and less arduous duties.

22
Q

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

A

Can be used in all Group II gases and vapours

23
Q

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

A

Only an area requiring EPL Gc (Cat 3G) equipment

24
Q

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

A

Ex p

25
Q

26.
Equipment marked Ex ib IIC T5 can be used in?

In an area requiring EPL Gc (Cat 3G) and in IIB gases only

In any zone and in IIA and IIB gases only

In any zone and any gas sub-division

In areas requiring EPL’s Gb and Gc (Cats 2G and 3G) and in gas sub-divisions IIA, IIB or IIC

A

In areas requiring EPL’s Gb and Gc (Cats 2G and 3G) and in gas sub-divisions IIA, IIB or IIC.

26
Q

27.
Equipment marked ‘Gb’ (Cat 2G) may be used in which one of the following?

Zone 1 only

In zones 1 and 2 unless the area classification drawing specifies otherwise

Zones 1 and 2 only

Zone 0 only

A

In zones 1 and 2 unless the area classification drawing specifies otherwise.

27
Q

28.
Ex p equipment is permitted in which one of the following areas?

An area needing EPL Gc (Cat 3G) only

An area needing EPL Ga (Cat 1 G) only

An area needing EPL Gb (Cat 2G) only

An area needing EPL’s Gb or Gc (Cats 2G or 3G) only

A

An area needing EPL’s Gb or Gc (Cats 2G or 3G) only.

28
Q

29.
The traditional approach for the selection of equipment allows which one of the following EPL’s in a Zone 0 area?

Da

Ga

Db

Dc

A

Ga

29
Q

30.
The protection methods Ex o and Ex q may be installed one of the following areas?

Areas requiring EPL’s Ga, Gb or Gc (Cats 1 G, 2G or 3G)

Only in an area requiring EPL Gb (Cat 2G)

Only in an area requiring EPL Gc (Cat 3G)

Only in an areas requiring EPL’s Gb or Gc (Cats 2G or 3G)

A

Only in an areas requiring EPL’s Gb or Gc (Cats 2G or 3G).

30
Q

31.
The EPL/Category of equipment for installation in a Zone 1 area, unless indicated otherwise by the area classification diagram, is which one of the following?

Da (Cat 1 D)

Ga (Cat 1 G)

Db (Cat 2D)

Gb (Cat 2G)

A

Gb (Cat 2G).

31
Q

32.
The ATEX 214 Directive 2014/34/EU influences?

The design of explosion protected equipment

Electrical supply voltage harmonisation

The health and safety of personnel working in hazardous areas

The regulation of electromagnetic interference

A

The design of explosion protected equipment.

32
Q

33.
Equipment Categories are defined in ATEX 214, and in ATEX 137 hazardous areas are classified into zones. Unless a risk assessment states otherwise Category 2 equipment can be used in?

Zones 1, 2, 21, 22

Zones 0, 1, 2, 20, 21, 22

Zones 20, 21, 22 only

Zones 2, 22 only

A

Zones 1, 2, 21, 22

33
Q

13.
IF NOT MARKED ON THE CERTIFICATION LABLE, IT CAN BE ASSUMED THAT THE AMBIENT RATING OF APPARATUS FOR USE IN THE UK IS?

0 to 45 deg C
-10 to +50 deg C
-20 to +40 deg C
0 to +35 deg C

A

-20 to +40 deg C

COMPEX (14 decks)

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