ML20210F922
| ML20210F922 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 02/05/1987 |
| From: | Mcnutt G, Russell J, Stewart D TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20210F865 | List: |
| References | |
| 241.2(B), 241.2(B)-R02, 241.2(B)-R2, NUDOCS 8702110190 | |
| Download: ML20210F922 (18) | |
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TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
SPECIAL PROGRAM
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REPORT TYPE:
SEQUOYAH ELEMENT REVISION NUMBER: 2 TITLE:
CABLE TERMINATION AND SPLICES Crimp Connections PAGE 1 0F 17 REASON FOR REVISION:
1.
Revised to incorporate SRP and TAS comments and to add Section 10, Corrective Action PREPARATION PREPARED BY:
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- SRP Secretary's signature denotes SNP concurrences are in files.
TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
SPECIAL PROGRAM REVISION NUMBER: 2
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PAGE 2 0F 17 1.
CHARACTERIZATION OF ISSUE (S):
Concerns:
Issue:
JLH-85-004 a.
The use of pre-insulated diamond "PIDG lugs have apparently been grip (PIDG) lugs to make crimps used for making crimps on solid on solid conductors may result in conductors resulting in reduced reduced current capacity. The current capacity for CSSC fire practice of crimping on solid dampers."
conductors requires reevaluation.
PH-85-003-003 "The practice of terminating diodes and rectifiers without soldering the wiring but only splicing by crimping to the lead-ins needs to be reevaluated for quality construction.
Control room 757' elev."
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2.
HAVE ISSUES BEEN IDENTIFIED IN ANOTHER SYSTEMATIC ANALYSIS? YES X N0 o
Identified by TVA WBN OC Date May 13, 1985 Noncomformance Report NCR No. WBN 6076 R0, AMP diamond grip i
insulation terminal lugs o
Identified by TVA WBN EEB/WBEP Date August 14, 1985 SCR WBNEEB8537 R0, Misapplication of AMP PIDG Terminal Lugs o
Identified by,TVA WBN NSRS Date September 23, 1985 TVA WBN (SQN) Nuclear Safety Review Staff Investigation Report I-85-101-WBN (SQN)-1, Improper Termination Techniques 0327D - 01/26/87 i
TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
SPECIAL PROGRAM REVISION NUMSER: 2 l
PAGE 3 0F 17 o
Identified by TVA SQN GSTF Date May 6, 1986 TVA SNP Generic Concern Task Force " Crimp on Connectors on Diodes and Rectifiers" 3.
DOCUMENT NOS., TAG NOS., LOCATIONS, OR OTHER SPECIFIC DESCRIPTIVE IDENTIFICATIDMS STATED IN ELEMENT:
No furthcr information available. Employee concern addresses the use of crimp versus soldered connections on diodes and rectifiers, and solid conductors on critical systems' fire dampers.
4.
INTERVIEW FILES REVIEWED:
Files JLH-85-004 and PH-85-003 were reviewed and no additional unraviewed information for Sequoyah was identified.
5.
DOCUMENTS REVIEWED RELATED TO THE ELEMENT:
See Appendix A.
6.
WHAT REGULATIONS, LICENSING COMMITMENTS, DESIGN REQUIREMENTS, OR OTHER APPLY OR CONTROL IN THIS AREA?
See Appendix A.
7.
LIST REQUESTS FOR INFORMATION, MEETINGS, TELEPHONE CALLS, AND OTHER DISCUSSIONS RELATED TO ELEMENT.
See Appendix A.
8.
EVALUATION PROCESS:
a.
Reviewed available transcripts of NRC investigative interviews for additional information on the concerns.
b.
Reviewed existing TVA reports to determine the extent to which these reports and corrective actions satisfy the
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concerns.
03270 - 01/26/87 i
TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B SPECIAL PROGRAM' REVISION NUMBER: 2 PAGE 4 0F 17 c.
Reviewed existing TVA Construction, QA/QC, Operations, and
-Material Control reports for the TVA Employee Concerns Special Program for applicability to the concerns discussed in this report.
d.
Investigated the adequacy of using PIDG crimps on solid conductors and the consequences of their use on solid conductors in safety-related systems.
9.
DISCUSSION, FINDINGS, AND CONCLUSIONS:
Chronology:
04/03/85:
AMP Products Corporation, manufacturer of PDIG terminal lugs, advises TVA that the use of PDIG on solid copper conductors is not recommended 04/23/85:
Memo Standifer to Wadewitz instructs W3N to replace the PIDG terminal lugs that were installed on solid copper conductors in safety systems 05/85:
Concern PH-85-003-003 received by TVA i
05/13/85:
NCR 6076 R0 identifies the use of PDIG terminal lugs I
on solid copper conductors on safety systems-for the installation of small electronic components 08/06/85:
Regulatory Engineering Section (RES) issues OER i
i SQN 8850024001 which documents random inspections and interviews performed at Sequoyah, revealing the application of POIG terminal lugs in several areas 08/07/85:
McKay memo to Project Management Organization files documents the results of telephone interviews with i
operations and construction personnel at Sequoyah to determine if the failure history of the discrete electronic components was due to misapplication of PDIG terminal lugs 09/13/85:
Memo Parris to Whitt initiates corrective action to solder or replace all safety-related PDIG terminal lugs except those used on surge suppression networks 09/15/85:
Memo Wallace to Wilson requests DNE's position on the need of surge suppression network in the solenoid valve circuit
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0327D - 01/26/87
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TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
REVISION NUMBER: 2 PAGE 5 0F 17 09/23/85:
NSRS report I-85-101-WBN includes findings related to the use of PDIG terminal lugs at Sequoyah 10/24/86:
Draft memo Wilson to Wallace expresses DNE's position on the need of surge suppression network in the solenoid valve circuit 11/15/85:
Memo Abercrombie to Parris documents the status of rework of the PDIG terminal lugs in several areas at Sequoyah 01/24/86:
Special Maintenance Instruction SMI-2-317-25 R0 issued on Sequoyah Unit 2 requiring rework of all PDIG terminal lugs used on solid conductors found in previous inspections -
05/06/86:
Sequoyah Generic Task Force Report states that Unit 2 rework has been completed for the areas identified.
Similar rework will be completed before restart of Unit 1
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06/86:
Concern JLH-85-004 received by TVA Discussion:
On April 3, 1985, AMP Products Corporation, manufacturer of pre-insulated diamond grip (PIDG) terminal lugs, sent a letter to F. W. Chandler (App. A, 5.ff) stating that use of PIDG terminal lugs with solid copper conductors proved unsatisfactory in tests under any voltage or current condition.
An April 23, 1985 memo from J. C. Standifer to G. Wadewitz instructed WBN to replace the PIDG terminal lugs that were installed on solid wires.
NCR 6076 R0 (App. A, 5.b) was issued on May 13, 1985, identifying i
this condition. The NCR revealed that AMP PIDG terminal lugs have been employed with solid copper conductors on safety systems for t
the installation of small electronic components. Westinghouse i
responded to NCR 6076 in their letter of May 24, 1985 to J. A. Raulston (App. A, 5.g9). They stated that, based on i
discussions with the author of the AMP April 3, 1985 letter, they determined that the AMP tests on the PIDG terminals used relatively high voltages and currents which resulted in basic material breakdown of the terminal lugs. They concluded that since the Foxboro H-line process equipment was low voltage and low current, t
the PIDG lugs would maintain structural and electrical integrity
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for the life of the plant if terminal lugs were installed l
0327D - 01/26/87
TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
SPECIAL PROGRAM REVISION NUMBER: 2
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PAGE 6 0F 17 properly. They went on to state that problems with the lugs would be detected during periodic tests and that no history of problems was known to exist at WBN or SQN. On this basis, the use of PIDG terminals is acceptable to Westinghouse.
A June 17,1985 memo from Standifer to Wadewitz (App. A. 5.x) stated that on the basis of Westinghouse's evaluation (App. A, 5.gg) and the fact that TVA's use of the PIDG terminals is for similar control loop applications, the PIDG terminal is satisfactory in this application. This memo dispositioned the NCR to "use as is".
An NSRS investigation of employee concerns from June 17, 1985 to July 26, 1985 was reported on September 23, 1985 in I-85-101-WBN (SQN)-1 (App. A, 5.hh). The NSRS report included the following findings related to the use of PIDG terminal lugs at SQN:
a.
" AMP Corporation attempted to obtain UL approval for the use of the PIDG Terminal Lugs on solid copper conductor wire ')ut was unable to because of test failures (UL 486)."
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b.
"Foxboro drawing specified Burndy terminal lugs. However, Foxboro racks contain AMP terminal lugs (PIDGs)."
c.
"As a result of interviews with SQN personnel, it was learned that Foxboro had soldered over some terminal lugs (PIDGs) in the Foxboro racks."
d.
"Although Westinghouse had accepted the usage of PIDG terminal lugs on solid wire in the Foxboro racks, the justification for their approval of the termination process in view of the problems (broken wires, loose connections, etc.) and failures experienced at both plants was considered by NSRS to be questionable. Westinghouse had apparently not had knowledge of these failures during their evaluations and had erroneously assumed '... no history of any terminal lug problem has ever existed at either plant.'"
e.
"Although Nonconformance Report (NCR) WGNNCR6076 was generated for WBN, OE as well as 0C management personnel were aware of existence of the same nonconforming condition at SQN. Nonetheless, an NCR was r,t generated for SQN."
f.
"The PIDG terminal lugs have been installed in safety-related systems and failures have been identified at both plants.
Therefore the potential exists for the degradation of those I
safety-related systems."
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03270 - 01/26/87
TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
SPECIAL PROGRAM
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REVISION NUMBER: 2 PAGE 7 0F 17 g.
"SQN has experienced failures in test point resistors in the Foxboro racks. Crimp failures resulted in additional resistance in the test point resistors, which are 10 to 100 ohm resistors with I percent tolerances.
Problem test point resistors have been replaced with test point resistors where the terminal lugs have been crimped on and then soldered.
" Interviews with responsible personnel at SQN revealed that all PIDG terminal lugs utilized in the security system and crimped on solid wire were replaced with terminal lugs appropriate for the application."
h.
"G-38 requires selection of terminal lugs to be made based on manufacturer's recommendations. The manufacturer's recommendation was ignored in this case."
i.
"SQN NUC PR procedure M&AI-12, ' Modification and Additions Instruction - Interconnecting Cable Termination and Insulation Inspection,' R7, very clearly and appropriately states, ' Solid conductors shall be lugged or spliced witn AMP Solistrand lugs...'"
In response to a draft of the NSRS Report No. I-85-101-WBN, WBN Project Management Organization (PMO) conducted telephone interviews with operations and construction personnel (McKay memo to Pfl0 Files, App. A, 5.s; 08/07/85) to determine if the failure history of the discrete electronic components was due to the misapplication of PIDG terminal lugs. The results of these interviews at the Sequoyah Plant are:
o No failure could be directly or indirectly attributed to the misapplication of the PIDG terminal lugs.
o A program for soldering terminal lugs was started in 1976-1977 and continued after transfer from OC to NUC PR.
o Test point resistor failure of the Foxboro instrument racks was not attributed to the PIDG terminals lugs because the failures continued after they were soldered.
On August 6, 1985, Regulatory Engineering Section (RES) issued Operating Experience Review OER SQNB850024001 (App. A, 5.a) which documented random inspections and interviews performed at Sequoyah.
The inspections and interviews revealed the application of PIDG terminal lugs in several areas:
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03270 - 01/26/87
TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
SPECIAL PROGRAM REVISION NUMBER: 2 PAGE 8 0F 17
- 1. Fire damper fuse links
- 2. Solenoid valves suppression networks
- 3. D/G control panel and logic relay panel
- 4. 6.9 kV breaker control logic
- 5. Conax Connectors
- 6. 125 V de vital battery board
- 7. 480 V shutdown board
- 8. Vital inverters The OER also indicated that Specification Revision Notice SRN-G-38-6 was issued to initiate the revision to General Construction Specification G-38.
The revision specifies the AMP approved SOLIDSTRAND terminal lug for solid conductors.
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The Parris to Whitt memo dated September 13, 1985 (App. A, 5.cc) responded to the draft NSRS report and initiated corrective action to solder or replace all safety-related PIDG terminals except those used on surge suppression networks. These networks are used on solenoid valves and 6.9 kV and 480 V shutdown board status monitoring relays.
The memo stated that solenoid valve surge suppression networks will be addressed on a second priority as the surge suppression networks do not provide a safety function and serve only to enhance the life of the contacts in the circuits that power the solenoids.
(Note: Although this does not specifically address the 6.9 kV and 480 V shutdown board status monitoring relays, the response would be applicable).
A pull test and resistance measurements of PIDG terminal lugs crimped to ene end of a diode were performed by TVA Central Laboratories (App. A, 5.j). Ten terminal lugs on solid conductors were tested on 10/04/85 in accordance with Sequoyah Nuclear Plant Special Test Instruction STI-3 R0 (App. A, 5.h; 10/02/85).
The test results showed that the average contact resistance between the terminal lug and solid conductor was less than 0.00125 ohm.
All 10 terminal lugs withstood a gradual application of 8 pounds of force without evidence of slippage between the conductor and terminal lug.
The minimum force causing separation was 28.5 pounds. Even though the test results appeared favorable, the decision was made to proceed with the modifications.
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03270 - 01/26/87 j
TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
SPECIAL PROGRAM REVISION NUMBER: 2
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PAGE 9 0F 17 Subsequently, SQN coa.pleted inspections of more than 1,300 terminal connections in various areas (TVA memo from Abercrombie to Parris, App. A, 5.g; 11/15/85).
These inspections evaluated the rework as follows:
Area Inspected Rework Fire damper fuse links All rework complete MSIV solenoid valve suppression Rework not required (safety-network related but not required for safe shutdown) 6.9 kV shutdown board (suppression Rework not required network on status monitoring relay)
(nonsafety-related)
MSIV control circuit (diodes)
Rework required 125 Y vital battery board filter Rework required network
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480 V shutdown board (suppression Rework not required network on status monitoring relay)
(nonsafety-related) 125 Y vital inverters No PIDG connections found Diesel generator control panel No PIDG connections found and relay panel Units 1 and 2 auxiliary control rooms Rework required Units 1 and 2 auxiliary instrument Rework required rooms Units 1 and 2 main control rooms Rework required Units 1 and 2 fire detection panels Rework required (resistor across second horn) l To formalize and inplement the method of soldering or replacing PIDG terminal lugs, Special Maintenance Instruction SMI-2-317-25 R0, ( App. A, 5.1), was issued for SQN Unit 2 on 01/24/86.
Its l
l purpose was to require soldering of all AMP (PIDG) terminal lugs or replacement with AMP (SOLIDSTRAND) terminal lugs for all solid conductors in the critical systems and components found in the previous inspections.
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0327D - 01/26/87
TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
SPECIAL PROGRAM REVISION NUMBER: 2
.f PAGE 10 0F 17 TVA SQN Generic Concern Task Force report on EC PH-85-003-003 ( App.
A, 5.k; 05/06/86) stated that Unit 2 rework has been completed for the areas identified above. Similar rework will be completed for Unit 1 before it is restarted. The report recommended that EEB review the reults of the test conducted by TVA Central Laboratories because rework "seems" to be unnecessary in view of the test results.
EEB's response was to take a more conservative approach (i.e., soldering or replacing PIDG terminal lugs).
A September 15, 1986 memo from Wallace to Wilson ( App. A, 5.ee) requested-DHE's position on the need of surge suppression network in the solenoid valve circuit. A draft memo from Wilson to Wallace
( App. A, 5.p; 10/24/86) expressed EEB's position on surge suppression network.
This memo stated that the purpose of surge suppression networks is to protect circuit contacts against pitting and burning caused by arcing associated with breaking the inductive load current of the solenoid valve. Therefore, the reliability of PIDG connectors used on surge suppression networks should be assured. The memo also stated that PIDG connectors on surge suppression networks associated with solenoid valves required to perform a safety function must be replaced or soldered prior to restart. For the remaining class lE surge suppression networks, inoperability would not create an immediate safety problem, but over a period of time excessive contact wear would increase the potential for a contact failure. Therefore, field testing prior to restart must assure that the surge suppression networks have not developed an open circuit. This test should be repeated periodically until the surge suppression networks are permanently fixed by replacing or soldering the PIDG terminal lugs.
This memo has not been formally issued, and no followup program has been identified for closing out the recommended actions.
Findings:
N'P Products Corporation (manufacturer of PIDG teminal lugs) stated that, on the basis of its engineering department's evaluation and tests previously performed, using PIDG tenninal lugs on solid conductors is unsatisfactory ( App. A, 5.ff; 04/03/85).
Reduced current capacity could occur if teminal lugs are improperly installed.
A rework program (soldering or replacing the existing terminal lugs) was performed and completed for SQN Unit 2 in all safety-related applications with the exception of the surge suppression networks for solenoid valves.
TVA must perform similar rework for SQN Unit 1.
03270 - 01/26/87
TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
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SPECIAL PROGRAM REVISION NUMBER: 2 b
PAGE 11 0F 17
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Conclusion:==
The concern regarding improper use of PIDG terminal on solid conductors is valid. The adequacy of this application was found to be deficient, and corrective action has been taken. Rework on these terminations was completed for Unit 2 except for the rework on the surge suppression networks.
(TVA must implement the similar rework for SQN Unit 1.)
DNE is recomending that all PIDG terminal lugs in surge suppression networks for safety-related circuits be replaced or soldered, but no plan for this work presently exists.
- 10. CORRECTIVE ACTION The CATDs identified the following problems:
a.
CATD No. 241.02-SQN-01 indicated that rework of the PIDG terminal lugs was performed and completed for SQN Unit 2 in all safety-related applications except for the surge suppression network for solenoid valves. No similar rework in safety-related
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applications has been performed for Unit 1.
b.
CATD No. 241.02-SQN-02 indicated that no plan exists for reworking PIDG terminal lugs in surge suppression network for safety-related circuits in Unit 2, as recomended by DNE.
The corrective action package transmitted via TCAB-046 and TCAB-067 (App. A, 5.11) consists of the following:
1.
For non-arc suppressor circuits, replace or solder PIDG terminal lugs crimped on solid conductors in safety-related circuits except those where the engineering analysis included in engineering report ER Rl SCR SQNEEB86201 R0 shows that a failure would not create a safety concern.
2.
For safety-related solenoid valve circuits with arc suppressors, the PIDG terminal lugs crimped on solid conductors in these arc suppressors will be replaced or soldered if the solenoid valve circuit current exceeds the inductive rating of a circuit contact and the failure of that contact would create a safety concern.
The engineering report ER R1 SCR SQNEEB86201 RO included in the corrective action package identifies the rework scope of PIDG terminal lugs on arc suppression networks on safety-related solenoid valves.
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0327D - 01/26/87
TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
SPECIAL PROGRAM REVISION NLSEER: 2
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PAGE 12 0F 17 3.
All rework and/or field verification will be completed prior to restart of each unit.
Prior to Unit i restart, the schematics for both units will be revised to identify the arc suppressors for which the PIDG terminal lugs are to be replaced.
These corrective actions provide an acceptable method, scope, and schedule to resolve the problems identified by the CATDs.
s
%v d
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03?7D - 01/26/87 l
TVA EMPLOYEE CONCERNS REPORT NLMBER: 241.2(B)
SPECIAL PROGRAM REVISION NUMBER: 2 PAGE 13 0F 17 APPENDIX A 5.
DOCUMENTS REVIEWED RELATED TO THE ELEMENT:
a.
Operating Experience Review, OER SQN850024001 (WBNP NCR6076, RO), (08/06/85) b.
NCR 6076 R0, (C24 850513103), (05/13/85) c.
AMP Inc., catalog No. 4507-1, Engineering and Purchasing Guide, Fifth Edition, "PIDG Terminal" anc "50LIDSTRAND Te7isinal," 1984 d.
TVA General Construction Specification G-38 R6, (09/15/85) and R7 (01/15/86), " Installing Insulated Cables Rated Up to 15,000 Volts" e.
Potential Reportable Occurrence (PRO) 1-85-258, Originator:
M. Garman, "Possible misuse of PIDG lugs," (08/05/85) f.
Significant Condition Report SCR WBNEEB8537 R0, k
(B43850819 928), (08/14/85) g.
TVA memo from H. L. Abercrombie to H. G. Parris, "Sequoyah Nuclear Plant (SQN)-Nuclear Safety Review Staff Report No. I-85-101-WBN(SQN) - Use of PIDG Lugs for Electrical Terminations," (S53 851113 825), (11/15/85) h.
TVA, SNP, Special Test Instruction STI-3 R0, " Pull Test of Solid Conductor Crimped Connections," (10/02/85) i.
TVA, SNP, Special Maintenance Instruction SMI-2-317-25 R0 (01/24/86), and R1 (03/17/86), " Solder or Replacement of AMP (PIDG) Lugs Teminated on Solid Wire in CSSC Equipment, Unit 2" j.
TVA Central Laboratories Report 86-6365, (E13 851004 201),
(10/04/85) k.
TVA, SQN Generic Concern Task Force, " Crimp On Connectors On Diodes and Rectiffers," R1, (05/06/86) 1.
QIR SCN86082, "EQ Binder No. SQNEQ-JB0X-001; Open Item,"
(S03 860321 875), (03/21/86) m.
SQN ECN L5773, (B25 851107 514), (11/07/85)
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03270 - 01/26/87
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TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
SPECIAL PROGRAM REVISION NLMBER: 2 PAGE 14 0F 17 APPENDIX A (Cont'd) n.
SCR SQNEQP8618 R0, " Reanalyzed the Failure Effects of Solenoid Yalve Arc Suppression Networks," (B70 860624 001),
(06/20/86) o.
Engineering Report CAQ SQNEQP8618 R0, (B45 860827 000),
(08/22/86) p.
TVA memo D. W. Wilson to P. R. Wallace, "Sequoyah Nuclear Plant (SQN) - PIDG Connector - Surge Suppression Networks,"
(10/24/86) q.
SNP Modification and Addition Instructions M&AI-7 R6, " Cable Termination Splicing and Repairing of Damaged Cables,"
(08/07/85) r.
SNP Inspection Instruction No.10, " Interconnecting Cable Termination and Insulation Inspection," R16, (04/04/83) s.
TVA memo R. C. McKay to PM0 Files, " Review of NSRS k
Investigation of Alleged Improper Electrical Tennination Technique at WBNP - Nuclear Safety Staff Report No.
I-85-101-WBN," (08/07/85) t.
Underwriters Laboratories Inc., Standard No. UL 486 A-80, Seventh Edition, Fourth Impression, " Wire Connectors and Soldering Lugs for Use with Copper Conductors," (06/02/84) u.
TVA memo from J. P. Vineyard to H. P. Rankin, "Sequoyah Nuclear Plant Units 1 and 2 - Potential Generic Condition Evaluation," (B24851008 014), (10/08/85) v.
F. W. Chandler, TVA, letter to Joseph J. Naples, AMP Products Corporation, "Sequoyah and Watts Bar Nuclear Plants PIDG Tenninal Lugs," (8433 851120 903), (11/15/85) w.
TVA mero from F. W. Chandler to J. P. Vineyard, " Potential Generic Condition Evaluation" (B43850923 916), (09/23/85) x.
TVA meno from J. C. Standifer to G. Wadewitz, " Watts Bar Nuclear Plant-Non-ASME Significant Nonconfonnance Report 6076 RO," (B26 850617 004), (06/17/85) y.
Letter from B. J. Youngblood, NRC, to S. A. White, TVA, (B45 860714 832), (06/23/86) with the attached transcript of
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the investigative interview conducted by the NRC on 2/21/86 at the First Tennessee Bank Building in Knoxville, TN 0327D - 01/26/87
TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
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SPECIAL PROGRAM REVISION NUM ER: 2
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PAGE 15 0F 17 APPENDIX A (Cont'd) z.
TVA Electrical Design Guide DG-E20.3.5, R0, " Transient Suppression Networks for Inductive Loads," (06/25/84) aa.
TVA memo from T. G. Robinson to Electrical Engineering files, "Sequoyah Nuclear Plant Arc Suppression Network for Safety-Related Equipment," (B43 851028 916), (10/25/85) bb.
TVA memo from F. W. Chandler to J. A. Raulston (EEB 840313 905), (03/12/84)
TVA memo from H. G. Parris to K. W. Whiti, Response to NSRS cc.
Report I-85-101-WBN ( A02 850904 010), (09/13/85) dd.
TVA Engineering Report CAQ SCR WBNEEB8537 (B45 850909 260),
(09/03/85) ee.
TVA memo from P. R. Wallace to D. W. Wilson "Sequoyah Nuclear Plant (SON) - Surge Suppression Networks - PIDG Connectors (S53 860911 938) (09/1 5/86)
,u ff.
Letter from J. J. Naples, AFP Products Corporation to F. W. Chandler, TVA, "Use of AMP Diamond Grip Insulated Terminal Lugs with Copper Wire," (B43 50408021), (04/03/85) gg.
Letter from E. A. Nootnak, Westinghouse, to J. A. Raulston, TVA, " Response to TVA NCR 6076 Concerning AMP Products Corporation Letter on Diamond Grip Insulated Terminal Lugs,"
(845 850524 614), (05/24/85) hh.
TVA Nuclear Safety Review Staff (NSRS) Investigation Report I-85-101-WBN (09/23/85) 11.
Corrective Action Plan (CAP) for CATDs No. 241.02-SQN-01 and SON-02 transmitted via TCAB-046, (12/30/86) and TCAB-067, (01/23/87) 6.
WHAT REGULATIONS, LICENSING COMMITMENTS, DESIGN REQUIREMENTS, OR OTHER APPLY OR CONTROL IN THIS AREA?
a.
General Construction Specification G-38, " Installing Insulated Cables Rated up to 15,000 Volts" b.
Office of Engineering Procedure, OEP-09, "Frocurement" c.
SON Modification and Additions Instructions M&AI-7, " Cable Temination Splicing and Repairing of Damaged Cables" 03270 - 01/26/87
TVA EMPLOYEE CONCERNS REPORT NUMBER: 241.2(B)
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SPECIAL PROGRAM REVISION NUMBER: 2 i
PAGE 16 0F 17 APPENDIX A (Cont'd) d.
TVA Division of Construction SQN, Inspection Instruction No. 10 e.
TVA, SQN Special Maintenance Instruction SMI-2-317-25 R0 (01-24-86), R1 (03-17-86) 7.
LIST REQUESTS FOR INFORMATION, MEETINGS, TELEPHONE CALLS, AND OTHER DISCUSSIONS RELATED TO ELEMENT:
a.
Knoxville Meeting, Wheeler, Don-Doncow, Bechtel, and C. Sudduth, TVA, (04/22/86), IOM 566 b.
Telecon between P. B. Nesbitt, TVA, and U.
Rieder, Bechtel, (01/21/87), IOM 559 c.
Telecon between P. B. Nesbitt/M. Pyatt, TVA, and I. Don-Doncow/U. Rieder, Bechtel, (01/27/87), ICM 576 s
I 0327D - 01/26/87 l
I
o TVA EMPLOYEE CONCERNS REPORT Nt#EER: 241.2(B)
SPECIAL PROGRAM REVISION NUMBER: 2 PAGE 17 0F 17 CATD LIST The following CATDs identify and provide corrective actions for the findings included in this report:
241.02(B) SON 01 (01/21/87; CAP revised 01/20/87) 241.02(B) SON 02 (01/21/87; CAP revised 01/20/87)
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i 03270 - 01/26/87
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REFERENCE
- ECPS11tJ-ECPSIZIC TENNESSEE VALLEY AUTHORITY.
PAGE 1558 FRE0eENCY
- RESUEST OFFICE OF NUCLEAR PSIER RUN TIME - 12:57:19
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ONP - 1535 - RISI EWLOYEE CONCERN PROGRAfl SYSTEM (ECPS)
RUN DALE - 12/02/46 LIST OF EMPLSYEE CONCERN IIIFSANATION CATEGGRY: EN DES PROCESS & OUTPUT SUSCATEGORY: 24182 CRIMP COINSECTION ON BIOSES
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KEYNORB A 5
GUIERIC N
APPL
- STC/MSRS P
KEYNORD B CDISCEEN SUS R PLT BB5N IIIVESTIGATION 5
CSIICERN KEYNORD C NUMBER CAT CAT B LOC FL45 REPORT R
DESCRIPTISIB KEYNORD 3
,3 JLD-85-DC4 EN 24182 N SGM YYYY SS TNIS COIICERN MAS NOT BOCUMENTES PER K-FORM
$4A166 BUT IIAS BEEN IIICLUBEB IN THE EMPLOYEE CSIICERN LOG. PIBG LUGS NAV 3
E APPARENTLY BEEN USES FOR MAKING CR IWS ON SOLIB CSIIBUCTORS REstILTIIIG I N REDUCES CURRENT CAPACITY FOR CSSC FIRE BAfrERS.
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PM Ot3-883 EM 24182 N NSN YYYY SR THE PRACTICE OF TERMIIIATIIIS DIODES A NOIICOIIFORMAIICE T50185 REPORT ND RECTIFIERS WITIIOUT SOLDERIIIG THE CONST PROCESS,
NIRIIIG BUT OIILY SPLICIIIG BY CRIIW'IIIG ELECTRICAL
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TO THE LEAD-INS NEEDS TO BE RE-EVAL TERMIIIATIONS UATED FOR SUALITY CONSTRUCTICII. CON l
TROL ROWI 757' ELEV. (IIAMES/ DETAILS l
KIISBNI TO STC ANS RELEASE OF THIS INF i
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ORMATISII NOULD JEOPARDIZE CI'S COIBFI BENTIALITY). CI IIAS 100 fl0ltE INF0ltMA TIDII AVAILABLE.
3 2 CONCERNS FOR CATEGORY DI SUBCATEGORY 24182 l
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