KOC-E-004 Part-3

7/25/2019 KOC-E-004 Part-3

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Page

1

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15

OC.

NO. KOC-E-004

Pt. 3

REV, 1

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KUWAIT

OIL

COMPANY

(K.S.C,}

KOC REGOMMENDED

PRACTICE

FOR

SELECTIOTU,

INSTALLATION

AND

MAINTENANCE

OF

ELECTRICAL

EOUIPMENT

IN

HAZIARDOUS

AREAS

QNTn/NSrC

SAFETÍ

',í',)

DOC NO.

KOC-E-ü)4

Part

3

ISSUING

AUTHORITY:

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STANDARDS

DIVISION

7/25/2019 KOC-E-004 Part-3


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KOC

RECOMMENDED PRACTICE

FOR

SELECT¡ON,

INSTALLATION

AND

MAINTENANCE OF

ELECTRICAL

EOUIPMENT

IN HAZARDOUS

AREAS

INTRINSIC

SAFETY

'''

DOC NO.

KOC-E-004

Part

3

Formerly COP-E-OO'î

Part

4

rOC.

NO.

KOC-E-0O4 Pt.

3

REV.

1

age

2

of

15

{

Ø

7/25/2019 KOC-E-004 Part-3


l:

TABLE

OF

CONTENTS

TITLE

1.

SCOPE

APPLICATION

TERMINOLOGY

REFERENCE CODES AND

STANDARDS

ENVIRONMENTAL

CONDITIONS

SERVICE CONDITIONS

SELECTION

OF SYSTEMIAPPARATUS

SYSTEM'S

INSTALLATION

REOUIREMENTS

EARTH¡NG

OF

INTRINSICALLY SAFE

SYSTEMS

1O.

INSPECTION,

TESTING

AND MAINTENANCE

1

1.

OUALITY

ASSURANCE

12.

MARKING

13.

DOCUMENTATION

14.

APPENDIX

A

-

INSPECTION SCHEDULË FOR

Ex'i'

PAGE

it

,l

'i

tr

4

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1

4

5

6

7

7

8

9

10

10

12

12

13

14

2.

3.

4.

5.

6.

7.

8.

9.

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(+

REV.

1

age

3

of

15

oc.

No.

Koc-E-oo4

Pt. 3

7/25/2019 KOC-E-004 Part-3

http://slidepdf.com/reader/full/koc-e-004-part-3 4/15d*

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1.1

1.2

2.O

APPLICATION

2.1

2.2

This part

of

the

Recommended

Practice

describes

the

specific

requirements

for selection,

installation

and

testing

of intrínsically safe

electrical

equipment and systems to

be used

in

hazardous zones.

It

also

gives

requirements

for

inspection, maíntenance

and

marking

of

electrical

equipment with the

type of

protection

'i'

llntrinsic

Safetyl.

This

RP

{Recommended

Practice) covers

those item

of

equipment

identified

as

Ex'i'with

both

categories

ia

and

ib

and

it

shall be

read-in conjunction

with

Part 1

of this

Standard.

All

equípment

and installations

with

the

type

of

protection

'i'

shall

conform

to

the

requirement

of

th¡s

document,

except

as

modified

or

supplemented

by the

project

specification

or

equipment

data

sheet.

2.3

This document

is issued

in

the following

six

parts:

Part

1

Recommended Practice

for

Selection, lnstallation and

Maintenance

of

Electrical

Equipment

in

Hazardous

Areas:

General

Requirements.

Part 2

Recommended

Practice

for

Selection,

lnstallat¡on

and

Maintenance

of

Electrical

Equipment

in Hazardous

Areas:

Flameproof

Enclosure

'd'.

Pa¡t

3

Becomnpnded

Pnctice

for

&þctÍon,

lnstallation

and lilaÍntenance

of Hectfræl

Eguípmcnt

Ín

Hanrdous

Aræs:

Inaínsic

Mety

'i'-

Part

4

Recommended

P¡actice

for

Selection,

lnstallation

and

Maintenance

of Electrical

EquiÈment

in

Hazardous

Areas:

lncreased

safety

'e'.

Part

5

Recommended

Practice

for Selection,

lnstallation

and

Maintenance

of

Electrical

Equipment

¡n

Hazardous

Areas:

Non-sparking

type

'n'

equipment.

Part

6

Recommended Practice

for

Selection, lnstallation and

Maintenance

of

Electrical

Equipment

in Hazardous

'ot

.

Page

4

of

15

oc.

No.

Koc-E-oo4

Pr. 3

REV.

1

7/25/2019 KOC-E-004 Part-3


2

t

ú

(,

3.O

TERMINOLOGY

3.1

lntrinsic

Sgfetv

A

protection

technique

based

upon the

restriction of electrical

energy

within the apparatus

and of

interconnecting

wiring, exposed to

a

potentially

explosive atmosphere, to

a level

below

which

can

cause

ignition

by either

sparking

or

heating

effects.

3.2

lntrinsicallv

Safe Circuits

3.3

The

circuits

in

an

electrical apparatus

are

termed

as

intrinsically safe

circuits

if

they

do not

produce

spark

or

thermal

effect

in

the

prescribed

test

conditions

(by

means

of

intrinsic

safe

devices).

lntrinsically

Safe

Syst-ç.m,

Assembly

of

¡nterconnected

items

of

apparatus,

which

may

comprise

intrinsically-safe

apparatus,

associated

apparatus

and

other

apparatus,

and

interconnectÍng

cables

in

which

the circuits

within

those

parts

of the

system

that

may

be

exposed

to

explosive

gas

atmospheres

are

intrinsically-safe

circuits.

3.4

9alegorv ia

Electrical

apparatus

and systems

containing

intrinsically-safe

circuits

that

are

incapable

of

causing

ignition,

with the

appropriate

safety

factors:

o

when

up to

two

countable

faults

are

applied

and,

in addition,

o

those

non-countable

faults

which

give

the

most

onerous

condition.

3.5

Category ib

Electrical

apparatus

and

systems

containing

intrinsically-safe

circuits

which

are incapable

of caus¡ng

ignition

with the

appropriate

safety

factors:

o

when up

to one

countable

faults

is a pplied

and,

in

addition

O

those

non-countable

faults

which

produce

the

most

onerous

condition.

3.6

lntrinsicallv-S.afg

Aoparatus

Electrical apparatus

in

which

all

the

circuits.

DOC.

NO. KOC-E-004

Pt.

3

REV. 1

age

5 of

15

7/25/2019 KOC-E-004 Part-3


2

3.7

Associated

Apparatus

Electrical

apparatus in

which

there

are

both

intrinsically-safe circuits

and

non-intrinsically-safe

circuits.

3.8 Barrier

3.9

lsolators

4.2

4.3

4.4

CODES /

STANDARDS

o BS 5345

Part

4

Gode

of

practice

for

Selection,

installation

and

maintenance

of

electrical

apparatus

for use

in

potentially

explosive

atmospheres

(other

than

mining

applications

or

explosive

processing

and

manufacturel.

Electrical

apparatus

and

systems

with

the

type

of

protection

i

lntrinsically

Safe.

o

BS 5501

Part

7

EN

50020

Electrical

apparatus

for.

potent¡ally

lntrinsic

safety

i .

A

simple

passive

or

active

electronic

device

consisting of

diodes/resistors

to limit

energy

to

protect

electrical circuits

in

hazardous

areas.

This device requires

proper grounding.

A

complex electronic

device

to

limit

energy

to

protect

electrical

circqits

in hazardous

areas

without

the

requirement

of

earthing.

This

device

requires

power

supply.

4.O

REEFRENCE_CODES

AND

STANDARDç

4.1

ln

the event

of

conflict

between

this

Recommended

Practice and

the

Codes

referenced

herein, th e

most

stringent

requirement

shall apply

unless

otherwise

specified.

Any

exceptions

or

deviations

from this

document, along

wíth

their

merits

and

justifications,

shall be brought

to

the

attention

of KOC

Gontrolting

Department

for

their

review,

consÍderation

and

amendment

by

Standards

Division

(if

required).

A list

of Godes

and Standards

is

given

below

which

are associated

with

this

Recommended

Practice.

Hourever,

the

l¡st

does

not

prectude

the

use

of

other

technical

source

of information

provided

that

they do not

conflict

with.the

listed

Standards.

Page

6 of

15

OC. NO.

KOC-E-Oo4

Pt. 3

REV. 1

7/25/2019 KOC-E-004 Part-3


o

KOC-G-002

KOC

Standard

for

Hazardous

Area

Classification'

.

KOC-|-O11

,* ** r lnstrument

Cables.

5.O

ElìlylRoNltlFNTAt

CONDITIONS

r

BS 55O1

Part

9

EN

50039

Electrical

apparatus

for

potentially explosíve

atmospheres

Specification

for

intrinsically safe

electrical

systems

'i'.

o

¡EC

79-11

Electrical

apparatus

for explosive

gas

atmospheres

lntrinsic

safety

'i'.

.

KOC-E.OO4

PART

1

KOC

Recommended

Practice

for

selection,

installation

and.

maintenance

of

electrical

equipment

in

Hazardous

Areas.

{General

Requirementsl.

The

environment

of

Kuwait,

is severe

on all

equipment

and

must

be

considered

carefulty

before

procurement

of

plant

and

equipment.

lt

must be

assumed

that,

unless

otherwise

specified,

equipment

may

be subjected

to

sand ànd

fine

particle

dust

storms,

salt

laden

winds'

thunderstorms,

heavy

rains,

chemical

contam¡nants

and

extreme

temperatures.

Humidity

can

pose

a serious

problem

with

long

periods

of

relative

humidity level

of

l$Oo/o

being

part

of the

normal weather pattern.

Alletectrical

components

shallbe

designed

for continuous

operation

under

ambient

temperature

of

-3oC

to

+ SOoC

in

the

sunshade.

5.1

5.2

5.3

6.0

SERVICE

COfUDmpNS

G.l

All materials

used

for

etectrical

installation

shall

be new

and

in

all

respects

suitabte

for continuous

operation

under

the

environmental

conditions.

6.2

Reliability

of

all

equipment

to

perform

condítions

specified

is

essential.

Such

reliability

shall

be

substantiated

by

a similar

elsewhere

for

a

minimum

period

of

3

years.

service

nts

use

DOC.

NO.

KOC-E-oo4

Pt.

3

REV.

1

ageT

of 15

7/25/2019 KOC-E-004 Part-3


Page

I

of

15

OC.

NO.

KOC-E-004

ft. 3

REV. 1

All

construct¡onal

material

shall

be of hígh

quality

and

as

specified.

Prototype

or

unproven equipment not

having

well-established

record

of

satisfactory service shall

not

be

considered.

7.O

sErEçTroN

oF

sYsfErvl/APPARATlrS

7.1

All

energy

storing apparatus employed

in

a hazardous

area

must

be

selected

to

prevent

the

energy

escaping

and

be

certified as

intrinsically safe

to the relevant

zone,

gas

group

and

gas

ignition

temperature.

7.2

All

ol the

components within

lS circuit

must

be certified

for

use with

each

other

as

well as calculations

performed

regarding cable

capacitance, inductance,

etc.;

in order

to

guarantee the

safety

of

the

entire circuit.

Simple

certification

of

the

individual

components

shall

not be

sufficient.

7.3 Preference

shall be

given

to

use

lS

isolators

which

are not

dependent

on

the integrity of the

earthing

system.

7.4

The

system/apparatus

must

be used

within

the

ambient temperature

límits

for

which it is desÍgned

and certÍfied.

7.5 Simple

apparatus such as thermocouples,

resistive sensors,

LEDs

and

switches

may

be

employed in

a házardous area

without

certification

provided

that

it

does

not

generate

or

store

more than

1.2V,

O.1A

2OuJ

and

25mW.

7.6

Símple

apparatus having a

surface

area

between 2O

mm

square and

1O

cm sguare

will

be

classified

T4 when

the matched

output

power

of

the

interface

devíce does not

exceed:

o

1.3W

into 40oC ambient

a

1.2W into 60oC ambient

)

)

due

to

solar radiation

o

1.0W

into

80oC

ambient

)

7.7

Equipment

identified

Ex ia is suitable

for

all Zones

including

Zone

0

and

the

e{uipment

identified

Ex ib is

suitable

for Zone

I and 2.

6.3

7.4 The

documentation

for

the

system

or

self

contained

intrinsically

safe

apparatus

should

indicate the

category ia for

Zone

O

and

ia

or ib

for

other

Zones.

The

minimum

requirements

for conductor

sizes,

iunction

boxes

and

terminal

and

15.

7.9

units

shall

be in

accordance

with

4

Clause 14

7/25/2019 KOC-E-004 Part-3


The

wiring

of

intrinsically safe electrical apparatus

shall

be

of

temperature

class Tl

to

T4

inclusive.

lt

shall be of

copper and

in

accordance

with

the

requirements

of

BS 5501 Part 7.

The

maximum

operating temperature

of

electrical apparatus shallnot

exceed

the

minimum

ignition

temperature

of any

gas,

vapour

or mist

at

intended location

For

guidance

on

the

Hazardous

Area

Classification',

reference shall

be

made to KOC-G-OO2

and

relevant'HAC

drawings

of the

facility.

8.O

SYSTEM'SINSTALLATIONREOUIREMENTS

8.1 For

general

instaHation requirements,

the

Part

I

of

this

document

shall

be referred.

It

is

necessary

to

ensure

that category

of

any

intrinsically

safe

system

or

apparatus

is suítable

for

hazardous

area.

lt is also

important

to

ensure

that

no

obvious damage

has

occurred during

installation.

4.2

8.3 The

installation

of

any intrinsically

safe

circuit

or system

shall

comply

with

the

requireinents

of

appropriate

certifícation

documents-

4.4

Multi-core

cables

of

lntri'nsically

Safe

circuits (lS)

shall

not

be

connected

to

non'lS' circuits.

The

Multi-core.cablesiunction

boxes

etc.,

must

be

dedicated

to

lntrinsícally

Safe

circuits

of

the

same

level

of safety.

8.5

The

cable

parameters

for'lS'círcuits

shall

meet the

requirements

of

KOC-I-ol

1.

8.6

The

method of

cable

entry

shall

preserve

the degree

of

protection

of

intended

location.

8.7

The

cabte

shall

be

supported

to

its

near

point

of

entry

to

the

equ¡pment

to

prevent

any

stress

on

conductor

termination.

7.10

7.11

7

-12

8.8

8.9

The

terminals

for intrinsically

safe

circuits

shall

be

segregated

and

identified

clearly

from

terminals

of

non-intrinsically

safe

circuits,

and

separation

shali meet

the

requirements

of IEC 79-11

The

terminals

for

externat

wiring

and

where

connections

to

plugs

and

sockets

are not

prefabricated

dur¡ng

manufacture'

then

it

shall

comply

w¡th

¡EC

79-11

subclause

6.3.1

and 6.3.2.

8.10

Where

intrinsically

safe system

or

associated

is

fitted with

more

than one

plug

and

socket

for

connections

it

shall

be

ensured

that

possible.

The

matÍng

plugs

& sockets

sha

or

colour

coding

preferably

blue.

internal

is

not

marking

REV. 1

age

9 of

15

OC. NO.

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8.11

Cells,

batteries and accumulators whích

require current

limiting

devices

for safety

and intended to

be

used

in

hazardous zones

shall

be encapsulated or enclosed

with

the

current limiting

devices ín

such

a

way

that

any

conductor

or

terminal,

other

than

output

and

recharging

terminals

shall

not be accessible.

8.12

The

installation shall

be

inspected

for

complíance with

the

specifications and requirements

of

the relevant documentation

particularly

if the

special

installation conditions

are described.

9.O

EARTHTLG

OE

INTRIñISICALLY

SAFE_SJSTEMS

9,I

Where the earthing of enclosures, conductors,

metal

screens,

printed

wiring

board

conductors,

segregation contacts

of

plug-in

connectors

and

diode

safety

barriers

is

required

to

maintain

the type

of

protection,

the

cross-sectional

area

of any conductors,

connectors

andlerminals

shall

be capable of

carrying

rated

current.

9.2

The

minimum cross-sectional area

of conductor

used

for

earth¡ng

connections

should be equivalent to

a

copper

conductor

of

4

mm

square.

9.3

The

conductor

used

for

the

earth

connect¡on

should

be

insulated to

prevent

interference

of earth by fault current

which

might

flow in

metallic

parts.

9.4

The earthing

conductor

shall

be

given

extra

mechanical

protection

in

places

where

the

risk

of damage

is high.

9.5

The

impedance

between the barrier

earth

busbar

and the

point

of

connection

to

the

main

power

system

earth

shall

be

maintained

less

than

1 ohm even if a separate

earthing rod has

to

be

used

for

preserving

the integrity of intrinsically safe

system

(e.g.,

a diode

safety

barrier

earth,

a

transformer screen

earth,

a barrier

relay frame

earth

etc.).

9.6

The

integrity of

earthing

system

shall

not

be

affected

by

inadvertent

removal

of

a

plug

when

the

earthing

connection

is

made via

iunction

boxes,

plugs

and. sockets.

9.7

Where

diode safety

barriers

are

used,

care

shall be

taken to

ensure

that

barrier device

for intrinsically

safe

system

is

in accordance

with

BS

5345 Part

4

Clause 17

and system

documentation

A separate

lS

earthing

shall be needed

where barriers

are

in

use.

1o.O

lilsPECnON,

TESilNG

¡\ND

MAINT EIfANCE

1O.1

The

generalrecommendations for

inspection and given in

Part 1 of this

document that apply

equipment

or

installation

in hazardous

zo

inspection

and testing

requirements

for

protection i

ate

given

below:

t

nal

of

É,

REV.

1

age

1O

of

15

OC.

NO.

KOC-E-Oo4 Pt.

3

7/25/2019 KOC-E-004 Part-3


ñ

ú

2

,

:

I

10.2

10.3

14.4

10.5

10.6

10.7

Any change

in

area

classification

or

process

changes

on a

plant

should

be

immediately

followed by an initial

inspection

of

allaffected

systems,

to

ensure

that

intrinsically

safe

systems

and

apparatus

remain

suitable

(Refer

to

lnspection

Schedule

Appendix

A).

After

any

repair

or modification to

a

piece

of

equipment,

it shall

be

inspected

to

ensure its compliance

with

the

system

documentation

before

it is

reinstalled.

Regular

inspections

shallbe

carried

out

by

properly

trained

personnel

to

rninimize

the

risk

of

an

intrinsically

safe

system

or

apparatus

acting

as

a

source of

ignition

due

to

accidental

damage

or

unauthor¡zed

interference.

Guídance

for initial

and

periodic

inspections

is

given

in Appendix

A.

Sucli

inspections

shalt

be carried

out at least

once

every two

years.

More

frequent

inspections

may be

justified

for installation

in

particularly

arduous environmental

conditions.

A

dossier

should

be

retained

with

all

design

certification

available

to

which

the

inspection

and

tests records

are added

to.

This shall'be

held

by the

maintenance

Department

responsible

for the

equipment.

lntrinsically

safe

equipment,

assoóiated

apparatus

or

installation

shall

be

subject

to

a

type

test by the

manufacturer

to

ensure

that

intrinsically

safe circuits

are

incapable

of causing

ignition under

the

condition

specified

for

the

appropriate

category

of

electrical

equipment

and the

appropriate

grouping.

The

exemptions

from

this

test

may

be made for

the

circuits

only

in accordance

with

BS

55Ol

PartT

Clause 9

=

(EN

50020).

t

f

t

3

10.8

tntrinsically

safe

system

or

self

contained

electrical

equipment

be certified

and installed

in

accordance

with

the

requirements

of

its-

certificate.

10.9 A

proper

record

shall be maintained

for

all

intrinsically

safe

systems

and

setf

contained

intrinsically

safe

electrical

equipment

showing

results

of inspections

and tests.

ln

addition,

all

act¡on

taken

to

correct

defects

during

inspections shall

be recorded.

10.10

Where

compliance

with

the

appropriaté

documentation

cannot

be

demonstrated

by

physical

inspections

after

installation,

electrical

testing

shalt

be

carried

out in

accordance

with

BS 5345

Part

4

Clause

21.

10.1

1

lf

any self

eontained intrinsically

safe

equipment

is

removed'for

maintenance,

all exposed

cohductors

shall

be

secured

and

electrically.

lt shall

be ensured

that

maintena

s

not

reduce

the

level

of

safety achieved

by

I

oc.

No. Koc-E-oo4

Pt.

3

REV.

1

age

11 of

15

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I

10.12

Only

certified,

relevant

and specified

test

instruments

shall

be

used

for

maintenance

work

at

hazardous

locations.

Where

certified

instruments aie

not

available,

the

'Hot

Work Permit' system shall

be

implemented.

The

site

maintenance

work

shall be

restricted

to

the

following:

o

Disconnection, removal

or

replacement

of items

of

electrical

apparatus

and

cabling.

o

Adjustment

of

any controls

that

is

necessary

for the

calibration

of

the

electrical apparatus

or system.

a

Removal

and

replacement

of

any

plug-in

components

or

assemblies.

I

Any

other

maintenance

activity specifically

permitted

by the

rêlevant documentation.

11.O

OUAUTY

ASSUBAIì|CE

11.1

The

manufacturer

shall operate

a

quality

system

which

ensures

that

the

requirements

of this Standard

are

achieved.

The

quality

system

shall

preferably

be based

on

lS0

9000

series of

standards

and the

manufacturer

shall

demonstrate

compliance

by

providing

a copy

of

the

accredited

certificate

or

thè

manufacturer's

quality

manual.

Verification of the manufacturer's quality system

is

normally part

of

the

pre-qualification

procedure,

and

is

thereiore

not

detailed

in

the

core text

of this

Standard.

12.A

MARKING

12,1

tntrinsically

safe

electrical

apparatus

and

associated

components

shall

carry marking

on

the

main

part

at

a visible

place.

The

shall

include:

o

The

name of the manufacturer

or his

registeled

trade

mark.

I The manufacturer's

type

of

identification.

a

The

sígn for

type

of

protection

and

category

Ex'ia'

or

Ex

'ib'or

with

additional

letter

'E'.

o

The

group

of electrical

apparatus.

o

Maximum

surface temperature.

o

Serial

Number.

o

Certification

reference.

o

lnstallai¡on

drawing No.

.

The

mark X,

if

applicable.

2

*

'Í

ü

ÉR

REV.

1

agel2oÍ15

OC.

NO.

KOC-E-004

ft. 3

Ø,

7/25/2019 KOC-E-004 Part-3


7/25/2019 KOC-E-004 Part-3


9.

8.

7

6.

5

4.

Sealing

of

trunkíng,

ducts,

pípcs

and/or conduits is satisfactory.

Earth

continuity

¡s sat¡sfactory

le.g.

connections

are

tight

and

conductors

are

of

sufficient

crosstection

and

in

accordance

with

clause 8.O.

The intrinsically

safe

circuit

is isolated from earth or earthed

st

ono

po¡nt

only

(rofer

to

documentation).

Separation

b

ma¡nta¡nod

betweên lntrinslcally

safo

and

non-intrinsically

safe

z.

.ï

o

o

t

a

o

a

a

ô

o

All

point-topoint

connections

are correct and

t¡ght.

circuits.

of

the

type of

protection.

arth connections

maintain the

3

a

here is no

obvious damage

to

cables.

2.

O

o

Cable

screens

are

earthed

ln

acco¡dance w¡th

tho

documontat¡on.

B

1

a

a

INSTATLATION

Cables are

installed

ln

accordance

with

the documentatlon.

11

a

ype

of

lamp

and

rating

are appropriate as

specifiad in the documentation.

10

a

ype

of

fuse

and rating are appropriate.

o

9

a

rinted

circuit boards

are clean

and

undamaged.

I

o

lectrical

connections

are

tight,

7

o

Safety

barrie¡

units, other energy limiling

devices and

field devices

are

of

the

approved

Çpe,

lnstalled

in

accordance

with

the cort¡f¡cation

raquirements

and

securely earthed

where reguired.

b

o

here

are

no

unauthorized modifications

o¡ visible damage.

5

a

nstallation

is clearly

labelled.

4

t

urface tsmpsrature

class

is corrsct.

3

a

ircuit

and/or a¡iparðtus category

and

group

is

correct.

2

a

Apparatus

installed

is

that

specified

in

the documentation

-

Fixed apparatus

only

O

APPABATUS

Gircuit

and/or apparatus

documentation is

appropriate

to

area classification.

A.

tt

v

It

c

t

D

Grade

of

Chock that:

APPENDIX A

INSPECTION

SCHEDULE FOR

Ex i

Legend:

D

=

Detailed, C

=

Close,

V

=

Visual,

o

=

Applicable

Õ

=

lnitial

*

=

Periodic

REV. 1

age

14 of 15

DOC.

NO.

KOC-E-004 Pr. 3

ffi

7/25/2019 KOC-E-004 Part-3


APPENDIX

A

Cont..

¡NSPECTION SCHEDULE FOR

Ex'i'

Legend:

D

=

Detaìled, C

=

Close,V

=

Visual,

r

=

Applicable

*

=

lnitial

*r

=

Periodic

\,ê

\

a

No

undue external

accumulation

of dust

and

dirt.

O

ENVIRONM.ENT'

Apparatus is

adequately

protected

aga¡nst corrosion,

weathet,

vibration

and

other

adverse factors

c.

1

apacial

conditions

ol

use

(if

applicable)

arc compliad

wlth.

1.

a

s

applic¿blo,

3hort-c¡tcu¡t

protection

of the

powor

supply

is

in accordanco

with the

documentation.

10.

¡a

V

aa

c

o

D

Check

that:

Grade

of

lnspection

,Í

u

Page 15

of

15OC. NO. KOC-E-004

Pt. 3

REV.

1

Documents

KOC-E-004 Part-3