Text

Cable Qualification Test Program Outline,Secondary Containment for Brunswick Steam Electric Plant - Units 1 & 2
	ML20079P187
Person / Time
Site:	Brunswick
Issue date:	02/17/1983
From:	Rhyne D, Rothmon L, Waldorf J; CAROLINA POWER & LIGHT CO.
To:	;
Shared Package
ML20079P116	List: ML20079P113; ML20079P187;
References
	PROC-830217, NUDOCS 8303040551
	Download: ML20079P187 (18)
	v • d • e

_ . _ _ _ . , _ . _ _ _ , - _ . _ _ - _ _ _ . - _ _ _

ENCLOSURE 1 CAROLINA POWER & LIGHT COMPANY CABLE QUALIFICATION TEST PROGRAM OUTLINE SECONDARY CONTAINMENT f FOR BRUNSWICK STEAM ELECTRIC PLANT - UNITS 1 & 2 REV. NO. RECOMMENDED BY CONCURRED BY APPROVED BY D

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TABLE OF CONTENTS Item Desc ription -

PJyt dt 1 Obj ective 1 2 Materials 1-3 Test Specimen 1 4 Specimen Preconditioning 2 4.1 Thermal Aging 2 4.2 Radiation Aging 3 5 Adverse Environment Test Procedure 3 5.1 Specimen Installation 3 5.2 Electrical Connection 3 5.3 Environmental Exposure 4 5.4 Measurements 4 6 Acceptance Criteria 5 7 Report 5 FIGURES Fig. 1 Conductor Detail & Test Energization Circuit (Typical) 6 Fig. 2 Temperature & Pressure Curves 7 a

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BRUNSWICK STEAM ELECTRIC PLANT SECONDARY CONTAINMENT CABLE QUALIFICATION TEST PROGRAM OUTLINE 1.0 OBJECTIVE To perform qualification testing of Raychem-Flamtrol unshielded, jacketed cables having combined conductor insulation and jacket wall thickness equal to or greater than .120 inches to deter-mine qualification for Class 1-E service inside secondary containment under loss of coolant accident (LOCA) or high energy line break (HELB) conditions specific to Brunswick Steam Electric Plant (BSEP). Testing will be performed on two sets of pre-aged cable' specimens. One set will be pre-aged to simulate 8 years of in plant service (Condition A). The other set will be pre-aged to simulate 40 years of in plant service (Condition B).

Testing to be performed on these -specimens shall determine ability to perform intended functions under LOCA or HELB con-ditions during the remaining plant life.

2.0 MATERIALS Cables to be tested shall be Raychem-Flamtrol unshielded, jacketed cables whose combined conductor insulation and jacket wall thick-ness is greater than .120 inches and whose jackets were radiation crosslinked with a 2.0 Mev beam. Test samples shall be taken from unused cable available at BSEP.

3.0 TEST SPECIMENS 3.1 Two specimens each of cables aged at Condition A and Condi-tion B will be configured and tested as follows:

3.0 TEST SPECIMENS (Cont'd) 3.1.1 Cable jackets will be lef t intact and will exit the pressure vessel through suitable penetrations.

3.1.2 Cable jackets will be stripped in such a way that their ends will be inside the pressure vessel.

Individual components will be spliced to indivi-dual penetration leads inside the pressure vessel.

_ Thus, the open ends of the cable specimens will be exposed to the simulated adverse environment inside the vessel.

3.1.3 Each specimen will be of sufficient length to be wound for one complete turn on a 30-inch diameter mandrel, which will be used to hold the specimens in place during preconditioning and environmental exposu re.

4.0 SPECIMEN PRE-CONDITIONING 4.1 Thermal Aging 4.1.1 Condition A. One specimen of each configuration (3.1.1 and 3.1.2), while on the mandrel, will be aged at 123*C for 100 hours0.00116 days 0.0278 hours 1.653439e-4 weeks 3.805e-5 months to simulate 8 years of life at 66*C, based on Arrhenius analysis of long-term thermal life data.

4.1.2 Condition B. One specimen of each configuration (3.1.1 and 3.1.2), while on the mandrel, will be aged at 140*C for 100 hours0.00116 days 0.0278 hours 1.653439e-4 weeks 3.805e-5 months to simulate 40 years of life at 66*C, based on Arrhenius analysis of long-term thermal life data.

- - - _ _ - . _ _ _ - _ _ _ _ _ _ _ . _ _ ____._____J

4.0 SPECIMEN PRE-CONDITIONING (Cont'd) 4.2 Radiation Aging 4.2.1 Specimens pre-conditioned at Condition A (4.1.1) or Condition B (4.1.2) will be exposed to an air equivalent dose of 1.0 x 10 rads of gamma radiation from a cobalt-60 source. The dose rate shall not exceed 1.0 x 10 rads per hour. This exposure simu-lates the postulated LOCA radiation in secondary containment (1.0 x 10 rads). In plant service radiation dose (3.0 x 10 rads over 40 years) is negligible.

5.0 . ADVERSE ENVIRONMENT TEST PROCEDURE 5.1 Specimen Installation 5.1.1 The mandrels on which the pre-conditioned specimens are mounted shall be installed in the pressure vessel in such a way that they will be restrained from moving during the test.

5.1.2 Suitable penetrations shall be made as specified in 3.1.1 and 3.1.2.

5.2 Electrical Connections 5.2.1 The specimens shall be continuously energized as shown in Figure 1, where terminals A, B and C are connected to a 4-wire, 3-phase, Y-connected trans-former, with a grounded neutral, whose line volt-age is adjusted to 528 volts. Each transformer lead is fused at 0.5 amperes to facilitate failure detection.

5.2.2 The ends of each energized conductor shall be connec-ted as shown in Figure 1 and the current ' transformer shall be adjusted to provide a simulated load current of 12 amperes in each conductor. This adjustment is made at room temperature and the current will vary during the test as the conductor temperature varies.

e 5.0 ADVERSE ENVIRONMENT TEST PROCEDURE 5.3 Environmental Exposure 5.3.1 The specimens shall be exposed to the simultaneous temperature and pressure profiles shown in Figure 2.

5.3.2 During the last 32 days of exposure, a high humidity will be ' maintained inside the pressure vessel by introducing water into the bottom of the vessel so that the exposed surface area of the water is the same as the cross-sectional area of the vessel.

5.4 Measurements 5.4.1 The following parameters will be monitored during the test.

l 5.4.1.1 Voltage 1

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5.4.1.2 Load Current 5.4.1.3 Pressure 5.4.1.4 Temperature 5.4.1.5 Relative Humidity 5.4.2 Insulation resistance measurements will be made be-tween each conductor and all other conductors in the cable at 500 volts de af ter one minute of electrifi-cation. Such measurements shall be made before and af ter thermal aging, before and af ter radiation exposure, after installation in the pressure vessel and at the times shown in Figure 2.

a 6.0 ACCEPTANCE CRITERIA- [

6.1 Ability to carry' the simulated load current of 12 Amps at 528. VAC will demonstrate qualification of the cables for Class lE service .in secondary containment at.

BSEP.

7.0 REPORT 7.1 At the conclusion of the test program a report shall be issued by the test facility which shall i..clude the following:

7.1.1 Description of test specimens 7.1.2 Description of the test program 7.1.3 Detailed test data in tabular or chart from, as appropriate 7.1.4 Test conclusions 7.1.5 Calibration records of test data acquisition instruments

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TIME TDiPERATURE (F) PRESSURE (PSIG) 0 to 10 s 150 ramps to 312 0.0 ramps to 7.6 10 s to 60 s steady at 312- steady at 7.6 60 s to 70 s steady at 312 7.6 ramps toward 0.5 70 s to 90 s 312 ramps to 200 continues to 0.5 90 s to 16 m 200 ramps toward 13 7 steady at 0.5 16 m to Ih continues to 137 0.5 ramps to 0.0 1 h to 1d steady at 137 steady at 0.0 in 1h 137 ramps to 133 steady at 0.0 to 33 d steady at 133 steady at 0.0 FIGURE 2 1

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ENCLOSURE 2 CAROLINA POWER & LIGHT COMPANY CABLE QUALIFICATION TEST PROGRAM OUTLINE PRIMARY CONTAINMENT FOR BRUNSWICK STEAM ELECTRIC PLANT - UNITS 1 & 2 i

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" v.W"5 5 TABLE OF CONTENTS Item Description Page 1 Obj ective 1 2 Materials 1 3 Test Specimen 1 4 Specimen Preconditioning 2 4.1 Thermal Aging 2 4.2 Radiation Aging 3 5 Adverse Environment Test Procedure 3 5.1 Specimen Installation 3 5.2 Electrical Connection 3 5.3 Environmental Exposure 4 5.4 Measurements 4 6 Acceptance criteria 5 7 Report 5 FIGURES Fig. 1 Conductor Detail & Test Energization Circuit (Typical) 6 Fig. 2 Temperature & Pressure Curves 7

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PRIMARY CONTAINMENT CABLE QUALII'ICATION TEST PROGRAM OUTLINE i

1.0 OBJECTIVE l To perform qualification testing of Raychem-Flamtrol unshielded, jacketed cables having combined conductor insulation and jacket wall thickness equal to or greater than .120 inches to deter-mine qualification for Class 1-E service inside primary containment under loss of coolant accident (LOCA) or high energy line break (HELB) conditions specific to Brunswick Steam Electric Plant (BSEP). Testing vill be performed on two sets of pre-aged cable specimens. One set will be pre-aged to simulate 8 years of in plant service (Condition A) . The other set will be pre-aged to simulate 40 years of in plant service (Condition B).

Testing to be performed on these specimens shall determine ability to perform intended functions under LOCA or HELB con-ditions during the remaining plant life.

2.0 MATERIALS Cables to be tested shall be Raychem-Flamtrol unshielded, jacketed cables whose combined conductor insulation and jacket wall thick-t

ness is greater than .120 inches and whose jackets were radiation crosslinked with a 2.0 Mev beam. Test samples shall be taken from unused cable available at BSEP.

3.0 TEST SPECIMENS 3.1 Two specimens each of cables aged at Condition A and Condi-l tion B will be configured and tested as follows:

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, .. . -4 2 3.0 TEST SPECIMENS (Cont'd) '

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3.1.1 Cable' jackets will be left intact and will exit '

the pressure vessel through suitable penetrations'.

3.1.2 Cable jackets will be stripped in such a way that

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their ends will be inside the pressure vessel.

Individual components will be spliced to indivi-dual penetration leads inside the pressure vessel.

Thus, the open ends of the cable specimens.will'be exposed to the simulated adverse environment inside the vessel.

3.1.3 Each specimen will be of sufficient length to be wound for one complete turn on a 30-inch diameter

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mandrel, which will be used to hold the specimens ,

in place during preconditioning and environmental exposure.

4.0 SPECIMEN PRE-CONDITIONING 4.1 Thermal Aging 4.1.1 Condition A. One specimen of each configuration ,

(3.1.1 and 3.1.2), while on the mandrel, will be aged at 123*C for 100 hours0.00116 days 0.0278 hours 1.653439e-4 weeks 3.805e-5 months to simulate 8 years of life at 66*C, based on Arrhenius analysis of long-term thermal life 4th.

4.1.2 Condition . ae socimen of each configuratton ,

(3.1.1 and . 1.43, ':. nile on the mandrel, will- bc aged at 140*C for 100 hours0.00116 days 0.0278 hours 1.653439e-4 weeks 3.805e-5 months to simulate'40 -years of life at 66*C, based on Arrhenius analysis of long-term thermal life data.

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4.0 SPECIMEN PRE-CONDITIONING

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' w -&.urmwysrs= 42= g w c 4.2.lc. C h cimens thermally aged at Condition A (4.1.1) will be exposed to an air equivalent dc3e 7

7 of 6.2 x 10 rads of gamma radiation from a cobalt-6 60 source. The dose rate . shall not exceed 1.0 x 10 rads per hour. This exposure simulates 8 years of in plant service (1.2 x 10 rads) plus the postulated LOCA radiation (5.0 x 10 rads).

4.2.2 Condition B. Specimens thermally aged at Condition B (4.1.2) will be exposed to an air equivalent dose of 1.1 x 10 rads of gamma radiation from a cobalt-60 source. The dose rate shall not exceed 1.0 x 10 rads per hour. This exposure simulates 40 years of service (6.0 x 10 rads) plus the postulated LOCA radiation (5.0 x 10 rads).

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5.0 LOCA TEST PROCEDURE i 5.1 Specimen Installation 3

5.1.1 The mandrels on which the pre-conditioned specimens are mounted shall be installed in the ' pressure vessel in such a way that they will be restrained from moving during the test.

5.1,2 Suitable penetrations shall be made as specified in 3.1.1 and 3.1.2.

5.2 Electrical Connections 5.2.1 The specimens shall be continuously energized as shown in Figure 1, where terminals A, B and C are connected to a 4-wire, 3-phase, Y-connected trans-former, with a grounded neutral, whose line voltage is adjusted to 528 volts. Each transformer lead is fused at 0.5 amperes to facilitate failure detection.

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3.0 LOCA TEST PROCEDITRE (Cont'd) can- energized conductor shall be connec-te .as s o a igure 1 and the current trans fo rmer shall be adjusted to provide a simulated load current of 12 amperes in each conductor. This adjustment is made at room temperature and the current will vary during the test as the conductor temperature varies.

5.3 Environmental Exposure 5.3.1 The specimens shall be exposed to the simultaneous temperature and pressure profiles shown in Figure 2.

5.3.2 The specimens shall be exposed continuously to a demineralized water spray beginning 6 hours6.944444e-5 days 0.00167 hours 9.920635e-6 weeks 2.283e-6 months af ter the start of the environmental exposure. The spray shall be directed vertically downward at a minimum rate of 0.15 gallons per minute per square foot of horizontal cross-sectional area of the pressure vessel and shall continue for 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months . After 24 hours2.777778e-4 days 0.00667 hours 3.968254e-5 weeks 9.132e-6 months , the relative humidity will be maintained at 100?. for the duration of the test.

5.4 Measurements 5.4.1 The following parameters will be monitored during the test:

5.4.1.1 Voltage 5.4.1.2 Load Current 5.4.1.3 Pressure 5.4.1.4 Tempera ture 5.4.1.5 Humidity 5.4.2 Insulation resistance measurements will be made be-tween each conductor and all other conductors in the cable at 500 volts d-c af ter one minute of electrif.f-cation. Such measurements shall be made before and af ter thermal aging, before and af ter radiation exposure af ter installation in the pressure vessel and at the times shown in Figure 2.

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6.1 Ability to carry the simulated load current of 12 Amps at 528 VAC will demonstrate qualification of the cables for Class 1-E service in primary containment at BSEP.

] 7.0 REPORT 7.1 At the conclusion of the test program a report shall be issued by the test facility which shall include the following:

7.1.1 Description of test specimens 4

7.1.2 Description of the test program 7.1.3 Detailed test data in tabular or chart fo rm, as appropriate 7.1.4 Test conclusions 7.1.5 Calibration records of test data acquisition instruments s

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a a : i e i i 10 1.25 2.8 4.9 25 3 17 30 Seconds Hours Days TIME TEMPERATURE (F) PRESSURE (PSIG) 0 to 10 s 200 ramps to 340 17 ramps to 56 10 s to 1.25 h steady at 340 steady at 56 at 1.25 h steady at 340 56 steps to 35 1.25 h to 2.8 h steady at 340 steady at 35 2.8 h to 6.9 h 340 ramps to 250 steady at 35 6.9 h to 8.3 h steady at 250 steady at 35 at 8.3 h steady at 250 35 steps to 25 8.3 h to 25 h steady at 250 steady at 25 at 25 h 250 steps to 200 steady at 25 25 h to 17 d steady at 200 25 ramps to 34 17 d to 33 d steady at 200 steady at 34 FIGURE 2

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ML20079P187

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