Enclosures. Re: John D. Williamson v. Appalachian PQWW Company P.S.C. Case No E-C. Dear Mrs. Squire:

Transcription

1 Re: John D. Williamson v. Appalachian PQWW Company P.S.C. Case No E-C Dear Mrs. Squire: Thank p~ for your attention to this matter Enclosures cc: John D. Williamson Leslie Anderson Wayne Perdue

2 PUBLIC SERVICE COMMISSION OF WEST VIRGINIA CASE NO E-C JOHN D. WILLIAMSON, Complainant, V. APPALACHIAN POWER COMPANY, Defendant. ANSWER Appalachian Power Company ( APCo or the Company ), files the following as its Response to Staff s First Request for Information:

3 STAFF S FIRST REQUEST FOR INFORMATION FROM Appalachian Power Company John D. Williamson v. APCo Case No E-C Request No. 1.1 What company manufactured the neutral connector that failed? Response No. 1.1 The Company did not retain the connector in this Case. Therefore, the Company does not know what company manufactured the connector that failed. However, Company records indicate that from January 1, 2009 through September 1, 2010, APCo purchased 200 Blackburn model AC2-TB connectors and 7,300 Kearney model connectors. Based on the number of connectors purchased during the time frame in question, it is probable that the connector manufacturer was Kearney. Responder: Rebecca Tenney, Engineer 1 Name of Person Who Could Testify: The Company has not determined who may testify, Date: September 20, 2013

4 STAFF S FIRST REQUEST FOR INFORMATION FROM Appalachian Power Company John D. Williamson v. APCo Case No E-C Request No. 1.2 Does the manufacturer APCo listed in response to request no. 1.1 recommend a minimum number of crimps for the type of connector that failed? If so, please provide a COPY of any manufacturer recommendations. Response No. 1.2 Yes. Please see Attachment 1.2. The correct connector is Catalog Number 3OOlOCPS. Responder: Lassie Muncey, Supervisor Distribution Resource Planning Name of Person Who Could Testify: The Company has not determined who may testify. Date: September 20,20 13

5 Attachment 1.2 Splices Sheet 1 of 1 SPLICING SLEEVES FOR TRIPLEX NEUTRAL Splicing sleeves for triplex neutral are aluminum sleeves for sdicina the the rated breaking strength. I I Triplex Neutral Sleeves Catalog Number CPS 30009CPS CPS Conductor Size All Aluminum or ACSR Aluminum Alloy AAAC #4 Str. #2 Str. :: #6 Str. #4 Sol. - #4 Str. - #4 Str. #2 Sol. #4 #2 Str. #2 1 /o Str. #I - 1 /o - 2/0-4/0 TENSION SLEEVES FOR COPPER CONDUCTORS Made of dead soft, pure copper seamless tubing with the ends tapered inside, our tension sleeves for copper conductors are easily inserted, especially when making hot line splices. Full length metalizing of bore develops 95% of the rated breaking strength of the conductor. I Length (inches) Cap Color Tools & Dies (No. of Indents) 3 l/4 Orange to Red OS50 (6) OS620 (6) 3 j14 Blue 620-Nose (6) 2 3/4 Clear or 3 1/4 Orange 5/8 Nose (6) 3 1/4 Red OS50 (12) OS620 (12) 6 Red YO-Nose (12) /8 Nose (12) 8 Grey 0-Tool 737 (14) WH 737 (9) 8 Grey 0-TOO1840 (14) WH 840 (9) 8 Pink WH Burndy" Die Index Is I Catalog Number OH8C Conductor Size Tools & Dies (No. of Indents Per End). Length Burndy@ Stranded Solid (inches) Dies 0-Tool WH Die Index - I #8 2 1/2 5/16 I 161 I OH2-0-7C H3-0-7C H4-0-7C - 2/ Str. 7 1/4 11/16 (1 5) (8) / Str. 7 1/4 781 (8) 167 4/ Str - 7 1/ (8) 168

6 STAFF S FIRST REQUEST FOR INFORMATION FROM Appalachian Power Company John D. Williamson v. APCo Case No E-C Request No. 1.3 Does APCo have any internal policies on the minimum number of crimps to be made when installing neutral connectors? If so please provide such installation instructions (copies of any written instructions or summaries of verbal instructions). Response No. 1.3 Yes. The requested information is contained in Attachment 1.3 (Splice CID Number ). Responder: Lassie Muncey, Supervisor Distribution Resource Planning Name of Person Who Could Testify: The Company has not determined who may testify. Date: September 20, 2013

7 AMERICAN ELECTRIC POWER COMPANY DISTRIBUTION STANDARDS r SINGLE SLEEVE SPLICE -NOTE TELE I - g Attachment 1.3 Sheet 1 of 1 TABLE I SINGLE SLEEVE NOTES lthru 5 NUMBER OF TABLE IT SLEEVE SPLICE TABLE II NOTES 6 LND? CONSTRUCTION CIN T #2 AND SMALLER 1/0 THRU 4/0 LARGER THAN 4/0 CNC-STC-2 CNC-SIC-40 CNC-STC-10 cu 111 cc i 8! 4A I I I 7 1 % AA = ALUMNUW ALLOY (8201) AL i ALL ALUMINUM (1350) AS : ALUMiNUW CONDUCTOR STEEL REINFORCED (ACSR) CC = COPPERWELO COPPER CU = COPPER $? PH-25 TOOL JUNE 15, ~ NOTES 1 10 MINIMIZE TROUBLE FROM CONOUCTOR VIBRATION. 00 NO- INSTALL FULL TENSION SPLICES CLOSER THAN 12 INCHES FROM THE EDGE OF THE NEAREST TIE WIRE, ARMOR ROO OR OEADEND CLAMP. 2 CLEAN ALL CONDUCTORS THOROUGHLY WITH A STIFF WIRE BRUSH OR WlTH NO 70 EMERY CLOTH (FOR D B W p OR T B W P CONDUCTORS WITHOUT PAPER BARRIER USE A SUITABLE SOLVENT TO CLEAN THE STRANDS OF ASPHALT COMPOUND1 5 AFTER THE CLEANING OPERATION. COAT THE CONDUCTORS WITH A GRIT TYPE CORROSION-INHIBITING GREASE BEFORE INSTALLING SLEEVE. APPLY GREASE NO LATER THAN ONE HOUR AFTER CLEANING OPERATION. IF SLEEVES ARE FACTORY-PACKED WITH GREASE, SUPPLEMENTARY GREASE ON CONDUCTORS is NOT REQUIRED. 4 MAKE EACH SPLICE BY INSERTING THE CONDJCTOR ENDS IN THE SPLCINC SLEEVE AN0 COMPRESS THE SLEEVE IN ACCORDANCE WITH ABOVE TABLES. START COMPRESSIONS NEAR CENTER OF SLEEVE AND WORK TOWARDS THE END OF THE SLEEVE 5 COWPACT-STRAND CONDUCTORS REQURE THE SAME SZE SLEEVE AS EQUIVALENT AWG OR kcmli STAVDARO STRAND CONDUCTORS 6 SLIP ALUMINUM SLEEVE ONTO CONDUCTOR BEFORE ~NSTALLINC STEEL SLEEVE 7 CENTER THE ALUMINUM SLEEVE ON THE STEEL COMPRESS SLEEVE STARTING AT THE CRIMP STARTING LINE 8 STRIP LENGTH OF ALUMINUM STRANDS TO BE EOUAL TO ONE HALF STEEL SLEEVE LElvGTH PLUS ONE-HALF NCH 9 AVOID NtCKlNG THE STEEL CORE WIRE WHEN CUTTING THE ALUMINUM STRANDS 10 INJECT INHIBITOR (USING A CAULKING GUN1 INTO THE CEVTER HOLE OF THE SLEEVE AND SEAL WITH PLUG PROVIDED 11 SPLCE MAY BE USE0 FOR TWISTED SECONDARY NEUTRAL CONDUCTOR 12 SPLCE FOR SERVICE NEUTRAL CONDUCTOR ONLY KEARNEY FULL-TENSION SPLICES D S 71-K Exclusively for AEP approved parties, not to be copied nor distributed without written approval

8 STAFF S FIRST REQUEST FOR INFORMATION FROM Appalachian Power Company John D. Williamson v. APCo Case No E-C Request No. 1.4 Does the manufacturer APCo listed in response to request no. 1 recommend any additional installation instruction? If so please provide a copy of those instructions. Response No. 1.4 The Company is not aware of any additional manufacturer installation instructions. Responder: Lassie Muncey, Supervisor Distribution Resource Planning Name of Person Who Could Testify: The Company has not determined who may testify. Date: September 20, 2013

9 STAFF S FIRST REQUEST FOR INFORMATION FROM Appalachian Power Company John D. Williamson v. APCo Case No E-C Reauest No. 1.5 Does APCo have any internal instructions (in addition to the company s response to request no. 1.3) for the proper installation of neutral connectors? If so please provide a copy of those instructions (provide copies of written instructions or summary or verbal instructions). Response No. 1.5 Please see Attachment 1.5 for the requested information. Responder: Lassie Muncey, Supervisor Distribution Resource Planning Name of Person Who Could Testify: The Company has not determined who may testify. Date: September 20, 201 3

10 TECHNICAL 5 DlSTRlSUTION TRAIN IN 0 Attachment Splice Overhead Service Cable Table of Contents American Electric Power@ D i s t r i b uti o n Tec h n i ca I Tr a i n i ng Distribution Line/Service Mechanic Apprentice Training Series Updated 02/29/2012 Introduction.,,..., Tension Splices... 3 Non-Tension Splices *... 4 Splice Spacing... a... I 5 Summary I... 6 Appendix 1: D.S. 70 -Compression Connector Application Instructions... e... 7 Appendix 2: D.S Service Conductors and Street Lighting Cable...,,.,,...1,...,.,.,... 8 Appendix 3: D.S Aluminum Triplex Service Drop Cable... 9 Table of Figures I D-212 Splice Overhead Service Cable 1

11 Attachment 1.5 D-212 Splice Overhead Service Cable Objectives Procedure: Step 1: Study the Learning Guide Step 2: Attend Instructor's lecture Step 3: Take the Knowledge Test Step 4: Practice the task Step 5: Take the Performance Test Tools: - - ~ P ~ Resources: AEP Safety Manual e AEP Utilities Safety Procedures Manual 0 Learning Guide _l ll_ _-piip x- I Materials: 0 Compression sleeves; tension and non-tension 0 Two pieces of three-wire twist service drop D-212 Splice Overhead Service Cable 2

12 DISTRIBUTfON TECHNICAL E TRAINING Attachment 1.5 D-212 Splice Overhead Service Cable Learning Guide Introduction This module deals with the splicing of secondary cables and service drops. Like the conductors studied in the previous module, whenever lines are broken through accident or weather extremes, some means will be needed to repair the conductor back to an acceptable level of physical strength and ampacity. The splicing you will study in this module will feature the addition of non-tension splices to tension splicing that is similar to what you have previously studied. This Learning Guide describes the steps necessary to splice the two pieces of cable together. In order to help you achieve the objectives of this Learning Guide, we will discuss splicing the two pieces of cable together, and the following aspects: 1. Tension Splices 2. Non-Tension Splices 3. Splice Spacing Refer to the AEP Safety Manual for review of applicable safety measures to be followed while performing this task. The conductors will be spliced together using the proper sleeves and tools. The sleeves will Clear Communkat;on Clear communicotion is probably the most important defense you con use in preventing safety incidents and errors. The goal of cleorcomrnunicotion is to create o mutual understanding between two or more people. We con all think of a time that something we communicated wos misunderstood. There ore tools we con use and behaviors we con practice to make sure clear communicotion i.5 o part of every job. Tension Splices Service drop neutrals act as the supporting messenger wire for the cable and therefore must be spliced with a compression type tension sleeve. Automatic splices are not suited for use on service neutrals due to insufficient tension on the conductor and a possibly incompatible alloy. However, since the neutral conductor will not be pulled to the same tension as would a primary neutral, service drop tension splices are considerably shorter. Figure 1 shows service tension splices for 1/0 aluminum offered by different manufacturers. D-212 Splice Overhead Service Cable 3

13 DlSTRISUTlON TECHNICAL TRAINING Attachment 1.5 D-212 Splice Overhead Service Cable Learning Guide Figure 1: Tension Splices Like other splices, these sleeves are marked with crimp guides and die requirements. Conductor preparation is identical to that you have already studied; de-bur, mark, clean, and straighten. Crimp with a die indicated. Non-Tension Splices The insulated conductors of service drops are under no tension, so the only considerations for those splices are a good electrical connection and insulation to withstand the voltage involved. Figure 2 shows an assortment of non-tension splices. Both insulated and non-insulated splices are shown. They are marketed under names such as Insulink, Sta-Con, and Sew-End. Most of them are color coded to make their conductor size applications readily apparent. Figure 2: ffon-tension Splices Like other splicing sleeves, these splices are marked with crimp guides, die requirements, and a stripgage. The strip-gage indicates how much insulation to strip from the conductors. The strip-gage is visible in Figure 3. The length between the lines indicated by the red arrows is the amount of insulation to remove from the conductor. D-212 Splice Overhead Service Cable 4

14 Attachment 1.5 D-212 Splice Overhead Service Cabte Learning Guide Figure 3: Strip insulation to These Points The amount of insulation removed takes the place of conductor marking. Otherwise, conductor preparation is the same as before; de-bur, clean, and straighten. Crimp with a die indicated. If a Roninsulated splice is used, they must be taped. Splice Spacing Splices in a service drop are staggered with 12" spacing as indicated in DS 608 (see Appendix 3: D.s Aluminum Triplex Service Drop Cable). Begin by overlapping the cable ends as shown in Figure 4. Figure 4: Splice Spacing Cut the neutrals and insulated conductors to obtain a 12" stagger as shown in Figure 5. Figure 5: Stagger Splice Spacing Splice Overhead Service Cable 5

15 DlSTRl8UTlON TECHNICAL mining Attachment 1.5 D-212 Splice Overhead Service Cable Learning Guide The complete splicing procedure is given in Appendix 3: DS, 608 -Aluminum Triplex Service Drop Cable and the finished splice should appear as in Detail 3. Summary This Learning Guide has discussed how to splice the two pieces of cable together in detail. Remember to use the proper sleeve and accompanying tool to complete the splice. As covered in D-209, maintain your crimp tools on a regular basis. Also keep in mind the potential for pinch points and as always use best practices regarding knife safety. The details of this learning guide were: 1. Tension Splices 2. Non-Tension Splices 3. Splice Spacing The AEP Distribution Standards have been added to this learning guide to provide more comprehensive instruction and information (see Appendix 1: D.S Compression Connector Application Instructions, Appendix 2: D.S Service Conductors and Street Lighting Cable, and Appendix 3: D.S Aluminum Triplex Service Drop Cable). As always remember the importance of safety when conducting any task throughout the day. Questionha Attitude Using o Questioning Attitude can help us search for understonding, guidance, expected results and solution of concerns before taking action. Always ask questions to qua/ify, validote ond verify your source. /fit doesn't sound orfeel right to you, take the extra time to verify the information you've gathered before proceeding with a critical task. D-212 Splice Overhead Service Cable 6

16 DlSTRlBUTlON TECHNICAL E TRAINING Attachment 1.5 D-212 Splice Overhead Service Cable Appendix Appendix 1: D.S Compression Connector Application Instructions AYERlCAN M R I C POWER COMPANY DISTRIPUTIM SIANDARW INDEX FOR OVERHEAD AND UNDERGROUND COMPRESSIOW CONNECTOR APPLICATION INSTRUCTIONS d g ~ ~ 15, u g ~ NON*TENSION PRIMARY AND SECONDARY APPLICATtONS D,S. 70 Figure 6: OS Compression Connector Application lnstructions D-212 Splice Overhead Service Cable 7

17 DlSTRl BUT1 ON TECHNl CAL TRAINING Attachment 1.5 D-212 Splice Overhead Service Cable Appendix Appendix 2: D.S Service Conductors and Street Lighting Cable AYBRICIK ELECTRIC WlER CBUPANY msmtnurtoti PIANDAIDS REWVE rrsv.4703 #" 00.sLLuyEs P W OD.9LLLVLC. - 1%. I' 0,D.PIcvrs. 2" BUT1 SRlE M &R I MUlrn El0 I HOlfSl ULY is, mol NON-TENSION SPLLCES FOR SERVICE CONDUC'PORS AND STREET LIGHTING CABLE n,s Figure 7: D.S Service Conductors and Street Lighting Cable D-212 Splice Overhead Service Cable 8

18 DlSTRl8UTlON TECHNICAL TRAINING Attachment 1.5 D-212 Splice Overhead Service Cable Appendix Appendix 3: D.S Aluminum Triplex Service Drop Cable AMERICAN ELECTRIC POWER COMPANY DiSTRlBUSlON STANDAROS J4NVS.Ut SPtlCE FOR ALUMMUM TRIREX SUMCE DROP MELE W W 44,! NZ~lVE DS 608 Figure 8: D.S Aluminum Triplex Service Drop Cable D-212 Splice Overhead Service Cable 9

19 Attac ment Splice Over 5: ead Service Cable Table of Figures Table of Figures Figure 1: Tension Splices... 4 Figure 2: Non-Tension Splices... 4 Figure 3: Strip Insulation to These Points... 5 Figure 4: Splice Spacing... 5 Figure 5: Stagger Splice Spacing... 5 Figure 6: D.S. 70 -Compression Connector Application Instructions... 7 Figure 7: D.S Service Conductors and Street Lighting Cable... 8 Figure 8: D.S Aluminum Triplex Service Drop Cable... 9 D-212 Splice Overhead Service Cable 10

20 STAFF S FIRST REQUEST FOR INFORMATION FROM Appalachian Power Company John D. Williamson v. APCo Case No E-C Reauest No. 1.6 Does the servicer that repaired the neutral connector at issue in this case admit that the failed connector only had one crimp? Response No. 1.6 The Company Servicer that responded to the service-related call on May 5, 2013 does not recall the number of crimps on the neutral conductor connector. Responder: Darren Porter, Line Servicer Name of Person Who Could Testify: The Company has not determined who may testify. Date: September 20, 20 13

21 Respectfully submitted, APPALACHIAN POWER COMPANY Defendant Charleston, West if irginia P.O. Box 1986 Counsel for Appalachian Power Company Dated this 20th day of September, 2013.

22 VERIFICATION STATE OF WEST VIRGINIA, 1 COUNTY OF KANAWHA, TO-WIT: 1 Charles W. Gary, Regulatory Consultant for Appalachian Power Company, after being duly sworn, states upon his information and belief that the facts and allegations contained in the foregoing Response are true. Charles W. Gary, P.E. Taken, subscribed and sworn to before me on the 20th day of September, My commission expires: kt&j,&j?. I Notary Pubk (SEAL) OFFICIAL SEAL. k@&l STATE OF WESTVIRGINlA NOTARY PUeLlC DOROTHY E. PHILYAW APPACAC.HIAI4 PQVdEH PO BOX 15B J CHARLESTON, WV %5327-l% : v commission expires Octuber 2 201: I

23 CERTIFICATE OF SERVICE I, Gina E, Mazzei-Smith, Counsel for Appalachian Power Company, do hereby certify that a true copy of the Defendant's Response to Staff's First Request for Information, was mailed to Complainants through the regular course of the United States Postal Service, postage prepaid, this 20th day of September, 2013, addressed as follows: John D, Williamson HC 73, Box 2060 Dingess, WV and a copy of APCO'S RESPONSE was hand delivered, addressed to: Leslie Anderson Public Service Commission of WV 201 Brooks St. Charleston, West Virginia VIA HAND DELIVERY -