fire retardant non corrosive cables for nuclear power plants

Bratislava – September 27, 20061

Tristan CEROSKY / Lukas VON LAUE

Fire Retardant Non Corrosive Cables for Nuclear Power Plants

Introduction

� At the beginning, PVC & Hypalon®

were used in Nuclear Power Plant

� At that time Fire properties were

acceptable


� But corrosivity, toxicity, and smoke were tremendous

Fire Retardant Non Corrosive (FRNC) Cables


� NC means Non Corrosive

(or Halogen Free)

� FR means Fire Retardant

40 years experience for 1E & non 1E …

� 1980’: First generation of FRNC cables in France

� 1990’: Openning of Central & East Europe market with supplyof Temelin, Bohunice, Dukovany, Kozloduy

Improvement of Fire Performances versus Special painting on existing cables

2000’: Aecl, Minatom & General Electric now use FRNC Nexans cables


� 2000’: Aecl, Minatom & General Electric now use FRNC Nexans cables

� Today: FRNC cables are available for 60 years lifetime requested for EPR

reactor (Areva)

During all these years, close partnership between Nexans and EDF (Electricité de France)

Flame Retardancy - IEC 60332-1

� Single burner (IEC 695-2-4/1)

� Sample of 600 ± 25 mm

� Temperature : ± 400 °C

� Test duration : according to the cable

diameter (60 to 480 seconds)


� Results: after test the cable should

stop burning and the burnt length

should not reach 50 mm under the A mark

Fire Retardancy - IEC 60332-3

• Test on bunched cables

• High performances of FRNC (Fire

Retardant Non Corrosive) Cables

• Temperature: 800 °C 22 (A) : 7l/m of burning material

23 (B) : 3.5l/m

24 (C) : 1.5l/m


24 (C) : 1.5l/m

• Test duration22 (A) : 40 mn

23 (B) : 40 mn

24 (C) : 20 mn

� Results: no burning over 2.5m height

from the burner.

Smoke - Opacity - IEC 61034

� Smoke opacity measurement in a

27m3 room, during the burning of a

cable sample (25 min), and 40 min after burning is completed


- To simulate the cables qualified life- Arrhenius methodology(IEEE 383 par. 1.3.5.2)

Thermal Aging1

- To simulate the cables qualified lifenormal and accident irradiation(IEEE 383 par. 1.3.5.2)

Radiation Aging2

- To simulate the most severe postulated3

IEEE Standard 383 for Type Test of Class 1E Electric cables


- To simulate the most severe postulatedconditions of a design basis event andspecified conditions of installation(IEEE 383 par. 1.3.5.3)

Test design Basis event3

The type testing for design basis event conditions shall involve both aged and non aged

samples (IEEE 383 par. 1.3.5.2)

2 scenariis because the design basis event

may occur at any time (IEEE 383 par. 1.3.5.1)

+ +

+

1 2 3

2 3

Gamma radiation Aging


Nexans Cable

Gamma radiation Aging

(from Cobalt 60)

To simulate the cable qualified life

normal and accident irradiation

CIS bio intern./ LABRA (CEA

Saclay Facilities)

Accident Simulation


To simulate the most severe

postulated conditions of a design

basis event - thermo dynamical

shocks)

CIS bio intern./LABRA

(CEA Saclay Facilities)

Nexans cable after

Accident Simulation test

(DBA or LOCA)

Medium Voltage CablesExamples of cable constructions and Standards references

Medium Voltage

1. Conductor

IEC 60228

ASTME B3, B8

2. Non Corrosive Medium Voltage Insulation

IEC 60502 - 2 types EPR & HEPR

IEC 60092-351 type HF EPR

ICEA S-68-516 type EPR


ICEA S-68-516 type EPR

ICEA S-94-649 / AEIC CS 6/8

4. Medium Voltage semi conducting &

metallic screens

IEC 60502

ICEA S-94-649 / AEIC CS 6/8

6. Fire Retardant Non Corrosive

Inner Sheath

7. Fire Retardant Non Corrosive

Outer Sheath:

IEC 60092-359 type SH F1 EPR

ICEA T-33-65 types thermoset I & II

CSA 22.2 n°38

BTS 74 C 068

12467

Low Voltage CablesExamples of cable constructions and Standards references

Low Voltage

1. Conductor

IEC 60228

ASTME B3, B8

3. Non Corrosive Low Voltage Insulation


IEC 60502 - 1 types XLPE




6. Fire Retardant Non Corrosive Inner Sheath

7. Fire Retardant Non Corrosive Outer Sheath:



CSA 22.2 n°38

BTS 74 C 068

7 6 3 1

Control & Instrumentation Cables:Examples of cable constructions and Standards references

Control & Instrumentation

1. Conductor

IEC 60228

ASTME B3, B8

3. Non Corrosive Low Voltage Insulation






5. Instrumentation cable Screen

6. Fire Retardant Non Corrosive Inner Sheath

7. Fire Retardant Non Corrosive Outer Sheath:



CSA 22.2 n°38

BTS 74 C 068

7 5 3 165

Success Stories Since 1975

Nexans Supplier

� France : all NPPs

� Slovaquia : Bohunice

� Czech Republic : Temelin & Dukovany

� Romania : Cernavoda


� Ukraine : Khmelnitsky, Zaporozhe & South-Ukraine

� Bulgaria : Kozloduy

� Russia : Kalinine

� China : Tianwan, Qinshan phase 3, Ling Ao & Daya Bay

� India : Kudankulam

Slovaquia, Bohunice

Nexans Expertise

� Used Inside and Outside NPP’s

containment

� Fitted to 60 years life time

Fire Retardant Non Corrosive

� High quality and performance of electrical cables for Nuclear

installation

� Broad experience all over the World

for many types of reactors:

Nexans FRNC cables 1E & non1E Nexans choice


� Fire Retardant Non Corrosive

� Nuclear Qualification according to

many standards

� Radiation resistance up to 2.106 Gy

(200 Mrads)

for many types of reactors:

PWR, VVER, Candu & BWR reactors

� Tailor made

� Efficient Service & Reliability

Global expert in cables and cabling systems

Thank you for your attention

Tristan Cerosky


Tristan Cerosky

Nuclear Market Manager

Nexans France - Industrial Projects

Tel : +33 (0) 1 5562 7391

Fax : +33 (0) 1 5562 7849

Mobile : +33 (0) 6 1138 7706

e-mail : [email protected]

web : www.nexans.com

fire retardant non corrosive cables for nuclear power plants

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