IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants 1 Lukas VON LAUE Technical contact: Lukas von Laue Nexans France 41 rue Maurice Gorse F-18100 Mehun-sur-Yèvre France [email protected]Halogen Free Cables for Nuclear Power Plants Commercial contact: Tristan Cerosky Nexans France 4-10 rue Mozart F 92587 Clichy France [email protected]IEEE/ICC Fall 2007 meeting Scottsdale (Arizona) Educational Session
45
Embed
Halogen Free Cables for Nuclear Power Plants Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants 1 Lukas VON LAUE Technical contact: Lukas
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
Transcript
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants1
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants2
Abstract
Halogen free or FRNC (Fire Retardant Non Corrosive) NPP qualified cables according to Canadian, US and international specifications have been successfully used since many years in NPPs, mainly in Asia and Europe.
In case of fire, the major advantages of FRNC cables over halogen containing cables are to avoid the corrosive and toxic hydrochloric acid and dense black smoke. This allows easier fire
fighting (visibility, toxicity) and limits corrosion damage on metallic material in the vicinity of the fire.
Experience and technical properties with this proven and well established technology shall be reported, regarding the full cable range of NPP cables (power (LV&MV), control, instrument and others).
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants3
of PVC burnt produces about 2 liter of Hydrochloric Acid of “Xi”
concentration)
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants27
He says it is only a cabling problem
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants28
Low
Voltage Cables Examples
of cable
constructions and
Standards references
Low
Voltage1. ConductorIEC 60228ASTME B3, B8
3. Halogen
Free Low
Voltage InsulationIEC 60502 -
1 types EPR & HEPRIEC 60502 -
1 types XLPEIEC 60092-351 type HF EPRIECA S-68-516 type EPR
6. Fire
retardant Halogen
FreeInner
Sheath
7. Fire
Retardant Halogen
Free Outer
Sheath:IEC 60092-359 type SHF1IEC 60502 -
1 types ST8ICEA T-33-655 types thermoset
I & IICSA 22.2 n°38BTS 74 C 068
7 6 3 1
General
properties
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants29
Medium
Voltage Cables Examples
of cable
constructions and
Standards
references
Medium
Voltage
1. ConductorIEC 60228ASTME B3, B8
2. Halogen
Free Medium
Voltage InsulationIEC 60502 -
2 types EPR & HEPRIEC 60092-351 type HF EPRICEA S-68-516 type EPRICEA S-94-649 / AEIC CS 6/8
4. Medium
Voltage semi conducting
&metallic
screensIEC 60502 ICEA S-94-649 / AEIC CS 6/8
6. Fire
retardant Halogen
Free Inner
Sheath
7. Fire
Retardant Halogen
Free Outer
Sheath:IEC 60092-359 type SHF1IEC 60502 -
1 types ST8ICEA T-33-65 types thermoset
I & IICSA 22.2 n°38BTS 74 C 068
12467
General
properties
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants30
Control & Instrumentation Cables: Examples
of cable
constructions and
Standards references
Control & Instrumentation1. ConductorIEC 60228ASTME B3, B8
3. Halogen
Free Low
Voltage InsulationIEC 60502 -
1 types EPR & HEPRIEC 60502 -
1 types XLPEIEC 60092-351 type HF EPRIECA S-68-516 type EPR
5. Instrumentation cable
Screen
6. Fire
retardant Halogen
Free Inner Sheath
7. Fire
Retardant Halogen
Free Outer
Sheath:IEC 60092-359 type SHF1IEC 60502 -
1 types ST8ICEA T-33-65 types thermoset
I & IICSA 22.2 n°38BTS 74 C 068
7 5 3 165
General properties
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants31
NPP Cables Qualifications
General Performances according to: International and/or National standardsIECNF, BS, CSA, ASTM, ICEA, etc…BTS from EDF (Electricité de France)
Specific Nuclear Performances according to: IEEE 323 (NPP Electric Equipments)IEEE 383 (NPP Electric Cables)BTS and RCC-E EDF(Electricité de France)
+ specific engineering requirements
IEEE: Institute of Electrical and Electronic Engineers (USA)IEEE 323 and 383: Nuclear Power Engineering Committee of IEEEBTS : Book of Technical SpecificationsRCC-E : Construction and conception rules for electrical material in nuclear islands
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants32
- To simulate the cables qualified life- Arrhenius methodologyThermal Aging1
- To simulate the cables qualified life normal and accident irradiationRadiation Aging2
- To simulate the most severe postulated conditions of a design basis event and specified conditions of installation
Test design Basis event3
The type testing for design basis event conditions shall involve both aged and non aged samples
2 scenariis because the design basis eventmay occur at any time
+ +
+
1 2 3
2 3
IEEE Standard 383 for Type Test of Class 1E Electric cables
Nuclear typical properties
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants33
Specification Thermal AgingSimulation
RadiationExposure
Extreme accidentSimulation
conditions
1992 EDF135°C - 950 hours
850 kGy
(85 MRads)156°C - 560 kPa
1997 –
1998Temelin
135°C - 336 hours
(40 years at 60°C)
387 kGy
(38,7 MRads)150°C - 467 kPa
1999 Qinshanphase 3
140°C - 798 hours
(40 years at 90°C)
1025 kGy
(102,5 MRads)155°C - 440 kPa
2000 Huber& Suhner 137°C - 336 hours
2000 kGy
(200 MRads)171°C - 650 kPa
NPP cable Qualification Examples (1)
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants34
Specification Thermal AgingSimulation
RadiationExposure
Extreme accidentSimulation
conditions
2001 –
2003 Tianwan K0140°C - 775 hours
(40 years at 90°C)
1000 kGy
(100 MRads)250°C - 700 kPa
2003 –
2004 Cernavoda (40 years at 90°C)1000 kGy
(100 MRads)150°C - 140 kPa
2003 –
2004 Lungmen (40 years at 90°C)2000 kGy
(200 MRads)171°C - 310 kPa
2004 –
2007 EDF 135°C – 240 hours(60 years)
850 kGy 156°C - 560 kPa
NPP cable Qualification Examples (2)
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants35
To simulate the cables qualified
life.
Arrhenius methodology
According
to:
• ANSI/IEEE 101
• IEC 60216
1) Thermal Aging
Nuclear typical properties
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants36
Arrhenius ageing
test NPP sheath material
sheating compound at 180°C - 165°C - 150°C - 135°C
0
20
40
60
80
100
120
140
160
180
1 10 100 1000 10000
time (hours)
elon
gatio
n at
bre
ak [%
]
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants37
Arrhenius ageing test NPP sheath material
Experimental :• Measured quantity : elongation at break according to IEC60811 -1-1• Ageing conditions : hot ai r oven according to IEC60811 -1-2• Endpoint criteria : 50 % of initial elongation at break
Time for 50 % of initial elongation at breakTest temperature
Inverse absolute
temperature Min. estimate Max. estimate Median time [°C] [1/K] [hours] [hours] [hours] [days]135 2,450E-3 6520 9200 8160 340150 2,363E-3 2080 2510 2270 95165 2,282E-3 520 620 570 24180 2,207E-3 162 189 188 8
Fit results of median time values to Arrhenius law : • Activation energy : Ea = 1,348 eV or 130,1 kJ/mol• Correlation coefficient o f linear fit : R² = 0,9991
IEEE-ICC Fall 2007 meetin Scottsdale - L. von Laue(Nexans) : Halogen Free Cables for Nuclear Power Plants38