ML12338A548
| ML12338A548 | |
| Person / Time | |
|---|---|
| Site: | Indian Point  |
| Issue date: | 08/01/2011 |
| From: | Entergy Nuclear Operations |
| To: | Atomic Safety and Licensing Board Panel |
| SECY RAS | |
| References | |
| RAS 22115, 50-247-LR, 50-286-LR, ASLBP 07-858-03-LR-BD01 EN-MA-138, Rev 0 | |
| Download: ML12338A548 (27) | |
Text
United States Nuclear Regulatory Commission Official Hearing Exhibit Entergy Nuclear Operations, Inc.
In the Matter of:
(Indian Point Nuclear Generating Units 2 and 3)
ASLBP #: 07-858-03-LR-BD01 Docket #: 05000247 l 05000286 Exhibit #: ENT000254-00-BD01 Identified: 10/15/2012 Admitted: 10/15/2012 Withdrawn: ENT000254 Rejected: Stricken: Submitted: March 29, 2012 Other:
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 1 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables Procedure Contains NMM eB REFLIB Forms: YES NO Effective Procedure Owner: Bret Baker Governance Owner: Samuel Stewart Date
Title:
Maintenance Mgr.
Title:
Fleet Maintenance Mgr.
8/1/2011 Site: PLP Site: HQN Exception Site Site Procedure Champion Title Date*
ANO Al Dodds Manager, Maintenance N/A BRP GGNS Jeff Houston Manager, Maintenance IPEC John Kirkpatrick Assistant Plant Manager N/A JAF Michael Reno Manager, Maintenance PLP Brett Baker Manager, Maintenance PNPS James Taormina Manager, Maintenance RBS Clarence Bush Manager, Maintenance VY Mike Tessier Manager, Maintenance W3 Brian Lindsey Manager, Maintenance N/A NP HQN Samuel Stewart Manager, Fleet Maintenance Site and NMM Procedures Canceled or Superseded By This Revision This procedure revision supersedes Palisades site Work Instruction WI-MSE-E-17 Process Applicability Exclusion: All Sites:
Specific Sites: ANO BRP GGNS IPEC JAF PLP PNPS RBS VY W3 NP Change Statement New procedure developed for the purposes of providing instructions for performing VLF Tan Delta and Withstand testing for electrical power cables.
JAF has determined that per EN-DC-346 they have no cables requiring the use of Tan Delta/Withstand testing. Therefore they will not be implementing this procedure at their site.
- Requires justification for the exception
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 2 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables TABLE OF CONTENTS Section Title Page 1.0 PURPOSE......................................................................................... 3
2.0 REFERENCES
.................................................................................. 3 3.0 DEFINITIONS.................................................................................... 3 4.0 RESPONSIBILITIES ......................................................................... 4 5.0 DETAILS........................................................................................... 5 6.0 INTERFACES ................................................................................. 16 7.0 RECORDS ...................................................................................... 16 8.0 SITE SPECIFIC COMMITMENTS .................................................... 16 9.0 ATTACHMENTS ............................................................................. 17 ATTACHMENT 9.1 TESTING RESULTS EVALUATION ......................................... 18 ATTACHMENT 9.1 TESTING RESULTS EVALUATION ......................................... 19 ATTACHMENT 9.1 TESTING RESULTS EVALUATION ......................................... 20 ATTACHMENT 9.2 ENGINEERING EVALUATION AND ACTIONS ........................... 21 ATTACHMENT 9.3 TEST EQUIPMENT AID ....................................................... 22 ATTACHMENT 9.3 TEST EQUIPMENT AID ....................................................... 23 ATTACHMENT 9.3 TEST EQUIPMENT AID ....................................................... 24 ATTACHMENT 9.3 TEST EQUIPMENT AID ....................................................... 25 ATTACHMENT 9.3 TEST EQUIPMENT AID ....................................................... 26 ATTACHMENT 9.3 TEST EQUIPMENT AID ....................................................... 27
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 3 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables 1.0 PURPOSE
[1] The purpose of this procedure is to provide instructions for performing Tan Delta diagnostic testing and Withstand testing of shielded medium voltage cables using a Very Low Frequency (VLF) source. This document provides information and guidance for using the VLF (Model HVA30/60) and Tan Delta (TD30/60) diagnostic testing instrumentation which will be referred to as HVA and TD.
[2] Passing a Withstand test after a successful Tan Delta test indicates that there is no significant distributed or local degradation of cable insulation. Tan Delta testing evaluates the cable for water-related degradation and Withstand testing determines whether severe localized degradation exists.
2.0 REFERENCES
[1] HV Diagnostics Portable Tan Delta Measurement System "Operating Manual TD 30"
[2] HV Diagnostics "Operating Manual HVA30
[3] IEEE-400.2 - 2004, "IEEE Guide For Field Testing of Shielded Power Cable Systems Using Very Low Frequency (VLF), " IEEE Power Engineering Society
[4] EPRI Report 1020805. "Plant Support Engineering: Aging Management Program Guidance For Medium-Voltage Cable Systems For Nuclear Power Plants
[5] Entergy Procedure EN-DC-346, "Cable Reliability Program 3.0 DEFINITIONS
[1] Acceptance Test - A field test made after cable system installation, including terminations and joints, but before the cable system is placed in normal service. The test is intended to detect installation damage and to show any gross defects or errors in installation of other system components.
[2] Diagnostic Test - A field test made during the operating life of a cable system. It is intended to determine and locate degradation that may cause cable and accessory failure.
[3] Device Under Test (DUT) - The electrical apparatus such as the cable being tested.
[4] Extruded Cables - Cables such as Butyl Rubber, EPR, XLPE, TR-XLPE, PE insulated cables.
[5] Installation Test - A field test conducted after cable installation but before jointing (splicing) or terminating. The test is intended to detect shipping, storage, or installation damage
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 4 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables
[6] Maintenance Test - A field test made during the operating life of a cable system. It is intended to detect deterioration of the system and to check the serviceability so that suitable maintenance procedures can be initiated.
[7] Measuring and Test Equipment (M&TE) - All of the measuring instruments, measurements standards, reference materials and auxiliary apparatus including computers and media that are necessary to perform a measurement used to assure that important parts of nuclear generating stations are in conformance with prescribed technical requirements and that data provided by testing, inspection, or maintenance are valid.
[8] Tan Delta (Dissipation Factor) Test - Low frequency test performed on shielded Medium Voltage cables to assess the global condition of the insulation. The test determines the amount of dielectric leakage through the insulation to ground which indicates the presence of water trees
[9] Time Domain Reflectometry (TDR) - A TDR test set is used to help identify the presence of conductor splices or shield degradation.
[10] VLF - Very Low Frequency is an alternating AC voltage waveform, as found in AC power distribution systems, that has a nominal frequency of 0.1 Hz (or one cycle every 10 seconds). The waveform recommended is that of smooth, load independent Sine wave as found in normal AC power systems and the frequency should be optimized and kept as close to 0.1 Hz as possible.
[11] Withstand Test - High potential test to determine whether cable is acceptable for energizing and placing back into service. This test applies a low frequency high voltage AC waveform to the cable under test. The instrument measures the capacitance, insulation resistance (Megohm), charging current, test duration, and dielectric withstand capability of the cable 4.0 RESPONSIBILITIES 4.1 The Maintenance Manager is responsible for:
[1] Ensuring Maintenance compliance with this procedure.
4.2 The Maintenance Supervisor is responsible for:
[1] Ensuring that a pre-job brief is conducted.
[2] Ensuring equipment is removed from service prior to testing.
[3] Ensuring that procedural requirements have been met prior to work package closeout.
[4] Verifying that any applicable qualifications are up to date.
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 5 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables 4.3 Maintenance Craft Personnel are responsible for:
[1] Implementing this procedure.
[2] Understand and adhere to procedural requirements.
[3] Notifying Responsible Engineer of test results.
4.4 The Planning Supervisor is responsible for:
[1] Ensuring compliance with model work order planning in accordance with EN-WM-105.
4.5 The Planner is responsible for:
[1] Ensuring the work package includes this procedure.
[2] Ensuring compliance with EN-WM-105 including tagging, rigging, and radiological requirements are identified and included in the job plan.
4.6 The Responsible Engineer or Designee is responsible for:
[1] Assisting Maintenance Craft Personnel or Planning as required.
[2] Identifying test voltages to be used for cable(s) to be tested
[3] Reviewing and approving completed test data and/or resolving testing issues.
5.0 DETAILS 5.1 PRECAUTIONS AND LIMITATIONS
[1] Tan Delta testing is only applicable for shielded, medium voltage cables. Unshielded cables have an inconsistent, unreliable ground plane. VLF AC Hi-Potential Withstand testing may be used for shielded or unshielded cables.
[2] Tan Delta and VLF Withstand testing require disconnecting cables from transformer or motor windings. Tan Delta testing requires disconnection of parallel conductors as necessary to test only one conductor at a time. Deviations from test setups described in this procedure may be made when approved by Engineering and described in the authorizing work order.
[3] The HVA Tan Delta tester may not correctly test cables that are greater than 5000 feet long.
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 6 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables 5.2 GENERAL
[1] This procedure is not a stand alone document and should be used with other approved instructions to facilitate removal from service of cable(s) to be tested.
[2] This procedure does not provide instruction on repair, refurbishment, or replacement of cables.
[3] As determined by Engineering and directed by work order, ensure cables are disconnected from buswork. If cables are left connected to buswork on either end and poor test results are obtained, then cables should be disconnected and retested.
[4] VLF Tan Delta testing should be done in three steps, as shown in the table below.
Engineering is to determine the appropriate test voltages, using these guidelines.
Testing is done from each conductor to ground. Test voltages are calculated from system operating voltage to ground, not phase to phase voltage and not cable rated voltage. Operating voltage to ground (Vo) is [Vphase-to-phase / SQRT(3)] for wye-connected three phase systems. Operating voltage is considered to be equal to Vphase-to-phase for delta connected three phase systems.
Examples: 1) for a 4160 VAC grounded wye system, Vo = 4160 / SQRT(3) = 2400;
- 2) for a 2400 VAC ungrounded delta system, Vo = 2400.
(a) Engineering may choose different test voltages than what would be determined above for special circumstances, such as when testing known degraded cable or when no spares are available, etc.
(b) VLF Tan Delta testing should be done in three steps, as shown below (Engineering to determine appropriate voltages):
Step 1 Step 2 Step 3 3-min 3-min 3-min Time 0.5 VO VO 1.5 VO VAC Record Appropriate Test Voltages:
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 7 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables (c) VLF AC Hi-Potential withstand testing is to be done at cable rated voltage for 30 minutes for Maintenance Tests. This is based on IEEE-400.2, except the maintenance tests are to be performed with a lower voltage at a longer time as discussed in EPRI-1020805 (page 5-4), to help avoid causing unnecessary cable failures during testing. Unless otherwise specified by Engineering, the following table shall be used to determine the appropriate withstand test voltage (Engineering to determine appropriate voltages).
Installation Test - Acceptance Test - Maintenance Test -
Cable Rating phase to ground phase to ground phase to ground Phase to Phase (kV) (kV) (kV) rms or (peak rms or (peak rms or (peak rms voltage (kV) voltage) voltage) voltage) 5 9 (13) 10 (14) 5 (7) 8 11 (16) 13 (18) 8 (11) 15 18 (25) 20 (28) 15 (21) 25 27 (38) 31 (44) 25 (35) 35 39 (55) 44 (62) 35 (49)
Test Type Maintenance Installation Acceptance (circle one) Test Test Test Time 30-min 30-min 30-min Record Appropriate Test Voltage per Engineering:
(d) For VLF AC Hi Potential Withstand testing, multiple parallel conductors within each phase may be bolted together for testing to reduce overall testing time. If test results are questionable with parallel conductors, it may be necessary to separate the conductors and test again.
(e) Test setups using HVA tester are to be 0.1 Hz, sine wave, trip out on arc, and no reporting.
[5] Discrepancies and corrective actions taken as a result of conditions identified during the performance of this procedure shall be recorded on the PCRS.
[6] Establish and release tagout clearances in accordance with EN-OP-102.
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 8 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables
[7] Obtain the following equipment to be used for testing:
(a) Tan Delta Tester, TD 30 or TD 60.
(b) VLF AC High Potential Tester, HVA 30 or HVA 60 (c) Corona balls (Yo-Yos) for cable ends (Tan Delta kit typically contains two or three).
(d) Time Domain Reflectometry (TDR) Tester.
5.3 TEST SETUP
[1] ENSURE cable to be tested is isolated (eg, breaker(s) opened and tagged).
[2] Use Live-Dead-Live check to ENSURE cable to be tested is deenergized.
[3] As necessary, ENSURE conductor to be tested is disconnected or isolated at both ends.
[4] IF end of cable to be tested is terminated with a separate connector (eg, elbow connector), THEN ENSURE connections are mated to a temporary termination per directions from connection manufacturer to prevent tracking and/or flash-over.
[5] ENSURE proper cable end treatments (eg, stress cones) are installed as designed.
[6] IF both ends of cables shield are accessible, THEN CHECK cable shield for end-to-end continuity (nominally zero ohms).
[7] IF shield continuity check is unsatisfactory, THEN CONTACT Assigned Supervisor.
[8] ENSURE shield(s) of cable to be tested is/are connected to ground.
NOTE: At the discretion of Engineering and as directed by applicable work order, Time Domain Reflectometry (TDR) testing in the following two steps may be omitted.
[9] CHECK cable conductors that will be Tan Delta tested with Time Domain Reflectometry (TDR) tester.
[10] PREPARE TDR report for work order and for cable program engineer.
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 9 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables
[11] ENSURE cable to be tested has adequate clearance from any other grounded object(s):
(a) A rope or tape may be used to tie back cable(s).
(b) All mechanical support connections on cable to be tested should be back away from stress cone part of termination.
[12] ENSURE power "On/Off" key switch on HVA front panel is "OFF."
[13] ENSURE Main "On/Off" switch on HVA side panel is in "O" (OFF) position.
[14] ENSURE Red "Emergency Off" pushbutton is latched in by depressing pushbutton located on HVA front panel.
[15] REMOVE External Remote Control Interlock Plug from HVA side panel socket.
[16] CONNECT HVA unit Earth Connection point to ground.
[17] CONNECT TD unit Ground/Earth Cable to ground.
[18] CONNECT 110 - 230 VAC power supply (2 kW minimum) to HVA at Main Plug.
[19] CONNECT High Voltage Cable from Tan Delta to HVA High Voltage Output Connector.
[20] PLACE Tan Delta unit in tripod in open area away from objects and people (during testing the metal head will be energized with full test voltage).
[21] REMOVE top/dome of Tan Delta AND ENSURE two (2) fully-charged C cell batteries are in unit (positive terminal points toward cap).
[22] ENSURE battery cap is screwed down AND PERFORM the following:
(a) TURN Tan Delta power to "I" (ON) position.
(b) ENSURE LED lights located on side of Tan Delta unit all illuminate, THEN Blue LED continues to flash.
[23] Taking care to not cross-thread cap threads, REPLACE metal cap on TD unit.
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 10 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables
[24] ESTABLISH communications between Tan Delta and laptop via Bluetooth:
(a) OPEN TD "Control Center" icon on laptop.
(b) In TD Control Center Main Screen, SELECT "Connect to TD System."
(c) ENSURE status changes to "Connected to HVA TD."
(d) ENSURE serial number connected to laptop matches serial number on TD nameplate.
(e) As necessary, CONTACT Assigned Supervisor for further instructions.
[25] CLEAN Tan Delta unit with quick-drying denatured alcohol or approved alternate.
5.4 CABLE TESTING
[1] CLEAN cable ends with denatured alcohol or approved equivalent, including cable end treatments, all the way up to where shield exits jacket.
NOTE: Corona balls (yo-yos) must be in open space with no insulation covers.
[2] As necessary, PLACE supplied corona balls/yo-yos on opposite end of conductors to be tested to help eliminate sharp edges and corona.
[3] As necessary, PLACE supplied corona balls/yo-yos on near end of conductors to be tested to help eliminate sharp edges and corona.
NOTE: The test cable installed in the step will reach full voltage during testing, but test cable insulation is not designed to insulate high voltage from ground.
Cable clearance may be achieved by moving TD and tripod to obtain proper orientation and distance in air.
[4] CONNECT Tan Delta head to cable to be tested:
(a) INSERT one end jumper cable in top of Tan Delta unit cap head.
(b) INSERT other end of jumper cable into hole drilled into corona ball.
(c) ENSURE jumper cable has minimal slack and is free and clear of any objects other than free air around cable.
[5] ENSURE HVA is turned on as follows:
(a) ENSURE Main "On/Off" switch on HVA side panel is in "I" (ON) position.
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 11 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables (b) ENSURE Power On/Off key switch on HVA front panel is in ON position.
NOTE: When reviewing previously existing HVA Auto Test sequences in the following step, it must not be assumed from the title of an existing test sequence that all parameters meet requirements for cable to be tested. All menus must be reviewed as necessary to ensure all parameters meet testing requirements. Auto Test sequence menus are found under "Reports and Setup" and "Exit Auto Test Sequence."
[6] ENSURE correct Auto Test sequence exists in HVA unit as follows:
(a) LOCATE existing test that meets all test parameter requirements specified in previous steps (eg, number of steps, voltages times, 0.1 Hz sine wave, trip out on arc, and no reporting).
OR (b) CREATE OR REVISE test that meets specified requirements.
[7] Using "Control Wheel" on front of unit, SELECT "Start A New Test" option from main menu (see Figure 1) OR USE last test sequence when performing same test on multiple cables.
Figure 1
[8] SELECT "No" to "Store a report" (TD reporting software on laptop will do reporting when TD is used with HVA (see Figure 2).
Figure 2
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 12 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables
[9] CLICK on "Auto Sequence" to select "Automatic Test Sequence" (see Figure 3).
Figure 3
[10] SELECT desired automatic test sequence (from those identified in Step 5.4[3]),
THEN PRESS "Next" to continue (see Figure 4)
Figure 4
[11] ENSURE cable/conductor under test is identified in laptop control center.
[12] SELECT appropriate phase to be tested on upper right hand corner of laptop "Control Center" screen.
[13] INSERT "External Remote Control Interlock" plug on left side of HVA unit.
[14] RELEASE "Emergency Off" pushbutton on top of HVA unit by depressing and twisting pushbutton.
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 13 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables The next two steps should be completed with less than 10 seconds between NOTE:
steps for the high voltage to be applied. Both steps will have to be repeated if more than 10 seconds elapsed between steps.
WARNING The next two steps will energize the Tan Delta unit to test voltage. Personnel shall be kept away from the unit to avoid potential electrical shock..
[15] WHEN appropriate test sequence has been selected, THEN PRESS "Start" (see Figure 5)
Figure 5
[16] PRESS Green I/O button on HVA front panel to activate high voltage.
(a) IF any interlocks have not been cleared, THEN "Release Emergency Off" text will be displayed on window and high voltage will not turn on.
(b) IF message appears, THEN CHECK "Emergency Off" button and "Side Emergency Off" Interlock" plug (see Figure 6).
Figure 6
[17] ENSURE Graphic Display on HVA displays test waveform and test data.
[18] ENSURE laptop is capturing data (laptop will not show data until after one minute of test time).
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 14 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables
[19] As desired at any time during or after test, ENTER comments or other desired information.
CAUTION During testing if at any time the Standard Deviation is greater than 0.04, the test must be stopped to prevent further damage to cable.
[20] DEPRESS to latch in Red Emergency Off pushbutton on HVA front panel.
[21] REMOVE External Remote Control Interlock plug from HVA side panel socket.
[22] ENSURE cable is discharged using suitable discharge or grounding stick.
[23] EVALUTE test result per Attachment 9.1.
(a) IF testing results are not "Good", THEN PROCEED to Step 5.4 [24].
(b) IF testing results are "Good", THEN GO TO Step 5.4 [25].
[24] REQUEST Responsible Engineer to determine appropriate action per Attachment 9.2.
[25] DISCONNECT test lead from corona ball of cable under test.
[26] For applicable type of test, PERFORM one of the following:
(a) For Tan Delta testing:
(1) IF additional conductor is to be Tan Delta tested, THEN REPEAT Steps 5.4[1] through 5.4[24].
(2) IF Tan Delta testing on all conductors is complete, THEN PROCEED to Step 5.4[27].
(b) For Withstand Testing:
(1) IF Additional conductor(s) is/are to be Withstand tested, THEN PROCEED to Step 5.4[28].
(2) IF Withstand testing of all conductors is complete, THEN PROCEED to Step 5.4[29].
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 15 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables
[27] DETERMINE whether Withstand testing will be performed:
(a) IF Withstand testing will be performed, THEN PROCEED to Step 5.4[28].
(b) IF Withstand testing will not be performed, THEN GO TO Step 5.4[29].
[28] REPEAT Steps 5.4[1] though 5.4[26], using Withstand test voltage and time as one single step in the automatic sequence.
[29] CLICK on "Save Report" button to save test data.
[30] SAVE a copy of test report from laptop as follows:
(a) From TD Control Center software on laptop, SELECT "Print report."
(b) SELECT printer Microsoft XPS Document Writer (or equivalent).
(c) SAVE file to a flash drive or equivalent.
5.5 COMPLETION
[1] ENSURE Power "On/Off" key switch on HVA side panel is in "OFF" position.
[2] ENSURE Main "On/Off" switch on HVA side panel is in "O" (OFF) position.
[3] DISCONNECT power supply to HVA unit.
[4] REMOVE all connections from cable and HVA unit.
[5] REMOVE top/dome of Tan Delta AND PERFORM the following:
(a) PLACE Tan Delta power switch to "O" (OFF) position.
(b) REMOVE batteries.
[6] INSERT "External Remote Control Interlock" plug on left side of HVA unit.
[7] RETURN all equipment to storage as directed by Assigned Supervisor.
[8] ENSURE all temporary grounds are removed.
[9] ENSURE cables are reconnected per applicable work order steps.
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 16 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables
[10] ENSURE a copy of test report for each test performed is printed out and attached to work order for records.
Performed By: /
Repairperson Date
[11] ENSURE Electronic or Printed copy of test report for each test performed is forwarded to Responsible Engineer.
Performed By: /
Repairperson Date
[12] DOCUMENT completion of work.
Performed By: /
Repairperson Date 5.6 ACCEPTANCE CRITERIA
[1] All tested cable results are "Good" per Attachment 9.1.
[2] A Condition Report has been issued for any final result other than "Good."
6.0 INTERFACES
[1] EN-DC-310, Predictive Maintenance Program
[2] EN-MA-105, Control of Measuring and Test Equipment
[3] EN-MA-118, Foreign Material Exclusion
[4] EN-OP-102, Protective and Caution Tagging
[5] EN-WM-105, Planning 7.0 RECORDS None 8.0 SITE SPECIFIC COMMITMENTS None
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 17 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables 9.0 ATTACHMENTS
[1] Attachment 9.1, "Testing Results Evaluation
[2] Attachment 9.2, Engineering Evaluation And Actions"
[3] Attachment 9.3, Test Equipment Aid
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 18 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables ATTACHMENT 9.1 T ESTING RESULTS EVALUATION Sheet 1 of 3 NOTES: 1. In the tables below, the term delta-Tan delta indicates the value of the difference in Tan delta results measured at 1.5Vo and 0.5Vo. The difference in tan delta is normally positive (eg, higher Tan delta results at higher test voltages).
- 2. Negative differences should be treated as very significant and may indicate a problem with a test or an indication of the presence of a significant defect.
- 3. All Tan delta results are in terms of x10-3, measured at a test frequency of 0.1 Hz.
1.0 DOCUMENT below which of the following Tan Delta Assessment Criteria Tables (1 through 5) are being used and basis for selection.
2.0 DOCUMENT below results of review.
Good Further Study Required - CR Number:
Action Required - CR Number:
Table 1 Tan Delta Assessment Criteria for Butyl Rubber Insulation Percent Standard Deviation of Tan Delta-Tan Condition Tan Delta ---- ---- Delta Delta Measurements at all Test Voltages Good < 12 and <3 and < 0.02 Further study 12 to 50 or 3 to 10 or 0.02 to 0.04 required Action required > 50 or > 10 or > 0.04
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 19 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables ATTACHMENT 9.1 T ESTING RESULTS EVALUATION Sheet 2 of 3 Table 2 Tan Delta Assessment Criteria for Black EPR Insulation Percent Standard Deviation of Tan Delta-Tan Condition Tan Delta ---- ---- Delta Delta Measurements at all Test Voltages Good < 12 and <3 and < 0.02 Further study 12 to 50 or 3 to 10 or 0.02 to 0.04 required Action required > 50 or > 10 or > 0.04 Table 3 Tan Delta Assessment Criteria for Pink EPR or Gray UniBlend EPR Insulation Percent Standard Deviation of Tan Delta-Tan Condition Tan Delta ---- ---- Delta Delta Measurements at all Test Voltages Good < 15 and <3 and < 0.02 Further study 15 to 30 or 3 to 8 or 0.02 to 0.04 required Action required >30 or >8 or >0.04 Table 4 Tan Delta Assessment Criteria for Brown EPR Insulation Percent Standard Deviation of Tan Delta-Tan Condition Tan delta ---- ---- Delta Delta Measurements at all Test Voltages Good < 50 and <5 and < 0.02 Further study 50 to 60 or 5 to 15 or 0.02 to 0.04 required Action required > 60 or > 15 or > 0.04 Table 5 Tan Delta Assessment Criteria for XLPE Insulation Percent Standard Deviation of Tan Delta-Tan Condition Tan delta ---- ---- Delta Delta Measurements at all Test Voltages Good < 1.2 and < 0.6 and < 0.02 Further study 1.2 to 2.2 or 0.6 to 1.0 or 0.02 to 0.04 required Action required > 2.2 or > 1.0 or > 0.04
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 20 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables ATTACHMENT 9.1 T ESTING RESULTS EVALUATION Sheet 3 of 3 Table 6 VLF Withstand Test Assessment Criteria Percent Standard Deviation of Tan delta Condition Cable Condition ----
Measurements at all Test Voltages No failure during Good and < 0.02 withstand test Further study No failure during and > 0.02 required withstand test Failed during Action required ---- ----
withstand test
NUCLEAR NON-QUALITY RELATED EN-MA-138 REV. 0 MANAGEMENT MANUAL REFERENCE USE PAGE 21 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables ATTACHMENT 9.2 ENGINEERING EVALUATION AND ACTIONS Sheet 1 of 1 1.0 Engineer shall EVALUATE test results AND RECOMMEND subsequent actions per the following:
Condition Recommended Actions Cable passed marginally, indicating degradation of cable insulation, but not to the extent that a near-term failure is expected.
Further study Engineering evaluate test equipment and cable under test for required cleanliness and appropriate positioning of test equipment. Compare to historical trends (if trend information exists). Attempt retest if test setup problems are possible cause.
Cable passed marginally, indicating possible near-term failure if put back in service. Poor Tan delta test values likely indicate significant Action Required: cable degradation of overall cable. Instability in Tan delta during Poor Tan Delta test withstand testing likely indicates that a significant degradation site results, but no cable exists and is in the process of going to failure. Engineering evaluate failure during test equipment and cable under test for cleanliness and appropriate Withstand Test positioning of test equipment. Compare to historical trends (if trend information exists). Attempt retest if test setup problems are possible cause.
Action Required:
Cable failure during Cable failed test, and needs to be repaired or replaced.
Withstand Test 2.0 Responsible Engineer DOCUMENT (3) below recommended action.
Testing to be Repeated Testing Not to be Repeated Withstand testing to be performed (if not already completed)
Withstand testing Not to be performed (if not already completed)
- = Entergy NUCLEAR MANAGEMENT MANUAL NON-QUALITY RELATED REFERENCE USE EN-MA-138 PAGE 22 OF 27 REV. 0 VLF Tan Delta And Withstand Testing Of Electrical Power Cables ATTACHMENT 9.3 T EST EQUIPMENT AID Sheet 1 of 6 Fro/ll PaNel De~criprio!l _
Fi2ure 1:
Emergency Latch. To release latch.
rotate the switch. \Vhen depressed. emergency Emergency OFF off is activated. Whell released. emergency off LED Green High Voltage is OFF when tills light is activated
'----+--------+-c LED Red Graphic Display 128 x12S Backlight Display N en 'igatioll Wheel ! ENTER /SELECT - Pres'> Wheel Knob SCROLL UP or DOWN - Rotate left High Voltage ON/OFF High Voltage i .. Relea,>ed by test in<.tnmlC'nt r-=--+-----------rK~'~e;y~;.!~~ nUllS all off. Removal of the key in the OFF position will Power ON/OFF Key lockout the lUut and HV will not be able to be activated. TIu", is a u ..efnl feamre to pre\"C'nt
f'JEntergy NUCLEAR MANAGEMENT NON-QUALITY RELATED EN-MA-138 I REV. 0 MANUAL REFERENCE USE PAGE 23 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables ATTACHMENT 9.3 T EST EQUIPMENT AID Sheet 2 of 6 Side POllel D escriptioll:
TIus is the fU'st connection that should be made and the last to be removed. Connect to the Earth Connection grOlUld of the OUT. Make stu'e earth cable i, seem'ely cOllnected to this connector s o that it call1lor come loose inadveltentl Main Plug 110V - 230V 50/60 Hz PINI and PIN2 have to be Sh0l1 circuited to allow HV operation. Th is pon can also be Extemal Remote connected to a remote emergency off or other Control Interlock Plug sw itch such as a gate. foot pedal or dead lUall switch. For all pin connections - plea'!.!! see FieLU'e 3 below.
hdeg1'3red magnetic auto-l'esetable '*nl.s.e" 6A.
Main Switch ON/OFF TIle fuse will reset on tUllung switch "OFF' and then "ON" 32a1.11.
TIus COlUlects to the HV Test Lead. To Conneci HV test lead. screw the plug of the HV test lead into tm'!. s ocket lUI til hand tight and finn.
High Voltage Output Anemion: Never discoIUlecr High Vohage Connector Connector \vithout first ensmi.ng that the deyice
\Ulder test has been discharged and grO\Ulded and the ke switch is off.
Check air filter once a year. To check it. tulclip Air Filter ou!, ide plastic grill guard. If necessruy replace it.
~Entergy NUCLEAR MANAGEMENT MANUAL NON-QUALITY RELATED REFERENCE USE EN-MA-138 PAGE 24 OF 27 REV. 0 VLF Tan Delta And Withstand Testing Of Electrical Power Cables ATTACHMENT 9.3 T EST EQUIPMENT AID Sheet 3 of 6 TD 30 Hardware
Description:
The TD System housing/enclosure . Note the TD30 will assume a potentially dangerous high potential / voltage dllling testing and measurement. Always keep the 1 TD System Housing housing isolated and c lear of any ground dllling testing. Depending on the application. the 3-Pod "Sputnik" Stand which is supplied can be used to ensure proper isolation.
High Voltage connection cable that links the TD30 to 2 High Voltage Cable the HVA generator.
3 High Voltage Plug HVA30 Plug directly into HVA30 HV output plug socket.
Ground cOllllection for load / station ground.
Always connect tlus cable to a station grOlUld. Do not 4 GrouncIfEarth Cable use tlus cable to "grOlUld" the Device Under Test without a suitable connection to a safe station / earth gro\llld.
AllllniIUlUll Head covering the main ON/OFF switch and the battery housing. This head also incOlporates an 8mmmenic tllIead, which assists in providing a number of different connection options to the DUT. Unscrew 5 Alumitulllll Head head cap section to remove Ii-om the rest of the housing to mill ON/OFF the system or to replace the batteri es.
To re-install the head cap section, carefully screw on the cap. taking care not to cross thread the cOllllection.
5 LEDs showing operation stanIS infOllllation. Do not 6 LED and Bluetooth RF cover this ar*ea.
- = Entergy NUCLEAR MANAGEMENT MANUAL NON-QUALITY RELATED REFERENCE USE EN-MA-138 PAGE 25 OF 27 REV. 0 VLF Tan Delta And Withstand Testing Of Electrical Power Cables ATTACHMENT 9.3 T EST EQUIPMENT AID Sheet 4 of 6 TIle He!ld of the TD30 system w ith the Cap remoHd showing the Battery compartment and the ON J O FF switch.
8 By removing the aituninilUll head cap the main 7 TO system control switch and the banclY housi1l2 can be !lccessed.
Switch for powering up or shutting down the m .. ystem. It is adyis.'lble to nU11 off d1e system to con..cryc b:mery life iflhe system is not plmmed to be used for an extended period of time.
The TO system incoI}>OI'31eS an alllolllatic 8 Main Switch power ..:we sleep mode. which slmls down the
..y!.tcm after no voltage << lkV) has being sensed fOf 60 nUnmes 0 1' 111orc:. In this mode the l11.ain switch has to be !oCt to 0 (off) for about 2 lninutes and then on again to \vake up the system manu.:lily. or you call 1'capply voltage with the HVA which will also wake up the unit.
Ull'.crew the coyer of [he banety companment to replace or ill'>tall batteJies. 2 ofe-Size 1.5V batteJie!t are required. ltl'>en the banelie,> with 9 Battery Compart1llelll the + po!tith*e upwards (to\Yards the operator)
See B attery Cover for polruity marking: if ill doubt .
- = Entergy NUCLEAR MANAGEMENT MANUAL NON-QUALITY RELATED REFERENCE USE EN-MA-138 PAGE 26 OF 27 REV. 0 VLF Tan Delta And Withstand Testing Of Electrical Power Cables ATTACHMENT 9.3 T EST EQUIPMENT AID Sheet 5 of 6 LED 1 - High Limit TO LED 2 - Medium Limit TO
- -- LED 3 - Low Limit TO LED 4 - Battery Low LED 5 - T030 Status A flawing signal ~~ indicates a ill level that is higher than ihe tnGH 11) setting. If seNp Signal High TO correctly, Ibis ",ill normally indicate a poor TD LED 1 (RED) result. Flashing will occur sinmltweously ",,;th the Slams LED signal. The 1D HIGH limit can bt: set using the 1D ControlCenter PC Software.
A flashing signal here indicates a TD level that is lower than the lflGH limit and higher than Signal Medium TO the LOW limit. If serup correctly, lhis \\ill LED 2 (YELLOW) norutally indicate a mediocre (medium) condition. The limits oftbe ID ....alue canbc= 50 using tbe TD ComrolCmrer PC Softu."Jf"e.
A flashing signal bere indicates a TD level that is lower than the LOW limit. If serup correctly.
Signal Low TO LED 3 (GREEN) this will nonna11y indicate a good TO result.
The limit of the TD value can be sd using the 1D ControlCenter PC Software.
Banery Low signal Penmmenrly O:-J ifbanery Signal Ban~ Low LED4 (RED) voltage drops belov.r critical limit In banery condition is OK IheD Ibis light ",ill nol be ON.
Flashing status signal showing active ~rion LED 5 Signal Status (BLUE) oftbr= svstOll.
= Entergy NUCLEAR MANAGEMENT NON-QUALITY RELATED EN-MA-138 REV. 0 MANUAL REFERENCE USE PAGE 27 OF 27 VLF Tan Delta And Withstand Testing Of Electrical Power Cables ATTACHMENT 9.3 T EST EQUIPMENT AID Sheet 6 of 6 Connection Diagram:
Notebook or PocketPC
'- Direct connection to OUT or arbitrary adapters like Me, clamps, hooks, Wireless data transmission (Bluelooth)
HVA30/60 High Voltage Generators Direct fit into
<II 11" (28cm)
- Generator, including 30 ft. (10m) Ground connection connection cable