ML20207D233
| ML20207D233 | |
| Person / Time | |
|---|---|
| Site: | Sequoyah  |
| Issue date: | 10/24/1986 |
| From: | TENNESSEE VALLEY AUTHORITY |
| To: | |
| Shared Package | |
| ML20207D213 | List: |
| References | |
| SMI--317-41, SMI-0-317-41, NUDOCS 8612300355 | |
| Download: ML20207D233 (40) | |
Text
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' cr TENNESSEE VALLEY AUTHORITY SEQUOYAH NUCLEAR PLANT de SPECIAL MAINTENANCE INSTRUCTION SMI-0-317-41 WALKDOWN PROCEDURE FOR AMPACITY Revision 0 PREPARED BY:
Norm Black RESPONSIBLE SECTION:
DNE REVISED BY:
N/A SUBMITTED BY:_M. h - )h[dL&h Responsible ecTion Supervisor PORC REVIEW DATE:
OCT 24198a APPROVED BY:
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Plant Manager DATE APPROVED:_ _ _ _ _
OCT 241986 Reason for revision (include all Instruction Change Form Nos.):
NEW INSTRUCTION.
The last page of this instruction is number:
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. 'o 2- / 3 SEQUOYAH NUCLEAR PLANT PLANT INSTRUCTION REVISION LOG SPECIAL MAINTENANCE INSTRUCTION SMI-0-317-41 REVISION Date Pages REASON FOR REVISION (INCLUDE COMMIT LEVEL Approved Affected MENTS AND ALL ICF FORM NUMBERS)
O All NEW TNSTRUCTION.
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CONTROLLED MANUAL HOLDER FROM:
Administrative Services, Word Processing Unit-DATE:
SUBJECT:
TRANSMITTAL OF SEQUOYAH INSTRUCTIONS Please sign below and return to acknowledge receipt of the following material and affirm that it has been placed in the appropriate manuals, your table of contents has been updated, instruction removed and discarded.
and the superseded Document Control within 10 days.
Return this transmittal to SMI-0-317-41 WALKDOWN PROCEDURE FOR AMPACITY
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Remove and destrov Insert
_Page Date Revision Page Date Revision NEW INSTRUCTION O
Return to:
Master Files, Sequoyah Nuclear Plant Signature /Date 0753C/mbs
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SQN SMI-0-317-41 Page 1 Revision 0 SPECIAL MAINTENANCE INSTRUCTION (WALKDOWN PROCEDURE FOR AFSACITY) 1.0 PURPOPSE The purpose of this SMI is to inspect the conduits and trays, at voltage levels V3, V4, and VS, whi:h have Appendix R fire wrap.
This
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is in response to memo: B43860908904, dated September 8, 1986,
SUBJECT:
Verification of the proper implementation of DS-E13.6.3 -
Ampacity tables for auxiliary and control power cables (0-15 KV).
Data collected will be support criteria for verifying the adequacy of ampacity of auxiliary and control power cables (0-15 KV).
2.0 REFERENCES
2.1 SQEP-47, Engineering Sampling Procedure for Cable Ampacity 2.2 M&AI-4, Installation of Control, Power, and Signal Cables 2.3 Construction S ecification G-38 P
2.4 Administrative Instruction AI-4 2.5 Administrative Instruction AI-7 3.0 ABREVIATIONS AND DEFININTIONS 3.1 QC:
Quality Control 3.2 DNE:
Design Nuclear Engineering 3.3 RWP:
Radiation Work Permit 3.4 DME Package Coordinator: The person in SQ EP responsible for coordinating and directing the walkdown to ensure that all required information, as specified in this procedure is properly obtained, verified and documented.
3.5 DNE Walkdown leader: The person in SQ EP responsible for leading the walkdowwn team, gathering data and first party verification of information.
3.6 QE&C: Quality Engineering and Quality Control 0261Q/jac
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.SQN SMI-0-317-41 Page 2 Revision 0 3.0 ABBREVIATIONS AND DEFINITIONS (continued) 3.7 Second Party verification: An independent verification by QE&C personnel to verify data.
3.8 Walkdown Team: The team should consist of the DNE walkdown leader, second_ party verification (QE&C) and an electrical modifications personnel, t
3.9 Inspection Reports: Attachment 1 (field verification of cable trays) and Attachment 2 (field verification of conduits).
3.10 Walkdown Package: Each walkdown package (three total) shall consist of a Data Package Cover Sheet, Attachments 1 or 2 (completed) and appropriate highlighted drawings (approximately 20 DWGS per package).
3.11 Description of Walkdown: The walkdown shall consist of verification of Attachments 1 and 2 and drawings in the walkdown package with the as constructed condition in the plant.
Any disagreement shall be documented on Attachment 1 or 2 and if required a WR will be written on trays or conduits that are not installed as required by drawings.
'4.0 PREREOUISITES 4.1 Conduit check list:
4.1.1 Initiate a work request (WR) for performance of SMI.
4.1.2 Conduits that have TSI fire wrap must be identified.
4.1.3 These conduits must be highlighted on conduit and grounding (C&G) drawings for visual conformation that the TSI fire wrap is installed. If the C&G drawing requires the TSI wrap and it is not installed this must be noted for further action (WR written).
4.1.4 In cases where more than one conduit is enclosed in the
]
same wrap the derating factor will be considered the
(
same as individualy wrapped.
d 4.1.5 Appendix "R" interaction items requiring TSI wrap will be used to establish the base line list of conduits.
Length of wrap shall not be measured, only noted that it is installed or not installed.
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G /3 SQN SMI-0-317-41 Page 3 Revision 0 4.0 PREREQUISITES (continued) 4.2 Tray check list:
4.2.1 Trays that have TSI fire wrap must be indentified.
4.2.2 These trays must be highlighted on conduit and grounding
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drawings for visual conformation that the TSI fire wrap is installed.
If the C&G drawing requires the TSI wrap and it is not installed this must be handled per SQM2 (WR written).
4.2.3 If trays, that have been identified to have covers, do not have covers installed at the time of inspection, this must be handled in accordance with SQM2 (WR written). Trays with solid bottoms shall be noted on.
4.2.4 Appendix "R" interaction items requiring TSI wrap will be used to establish the base line list of trays.
4.3 Obtain RWP before entering radiation access controlled areas this shall be obtained in accordance with applicable site
~-
procedures.
4.4 All walkdown team members shall have flashlights to aid in inspection.
4.5 Coordinate with carpenters for scaffolding and ladders as required. These shall be installed in accordance with HCI-M2 and HCI-M3 respectively.
5.0 LIMITATIONS AND PRECAUTIONS 5.1 TVA's safety practices shall be in effect and shall be followed.
Minimal risk to personnel safety or effort (e.g.
building of scaffolding) will be involved in obtaining the inspection information.
5.2 Any work necessary to support the walkdown effort shall be processed in accordance with SQM2.
5.3 Report any obvious equipment safety violations observed during the walkdown to the Shift Engineer (SE) immediately.
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. SQU SMI-0-317-41 Page 4 Revision 0 6.0 WALKDOWN RESPONSIBILITES 6.1 DNE Package Coordinator:
6.1.1 Issues assembled walkdown package to the DNE walkdown leader.
These packages contain at least the following.
(A) Highlighted as designed drawings showing areas to be walked down.
(B) Controlled copy of this procedure.
(C) Inspection reports listing conduits / trays to be inspected (Attachments 1 and 2).
6.1.2 Ensures walkdown personnel are properly trained and follow job site regulations and precautions in Section 5.0.
Training roster (Attachment 4) will be signed by all persons receiving the training.
6.1.3 Collects all inspection data from the DNE team leader and verifies that: (a) - that three packages are returned and statused at the end of the walkdown are' marked and, (b) - walkdown personnel have signed and dated on applicable inspection report forms (Attachments 1 and/or 2), that the information is correct as marked and has received second party verification.
6.1.4 Transmits assembled inspection packages to the appriopriate Sequoyah Engineering Personnel for evaluation.
6.2 DNE Walkdown Leader:
6.2.1 Shall assume leadership responsibility of the walkdown team.
6.2.2 Gather all data required for verification.
This shall include the following.
(A) Fill out in detail the inspection report form (s),
( Attachments 1 and/or 2).
(B) Sign and date Attachments 1 and/or 2 as the preparer.
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SQN SMI-0-317-41 Page 5 Revision 0 6.0 WALKDOWN RESPONSIBILITES (continued) 6.2.3 Reviews completed package to verify that all requested data _was recorded and second party verification done.
Ensures that any additional data is identified. 'He then
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returns the three packages to the DNE package -
coordinator.
6.2.4 Obtain required scaffolding and ladders.
6.3 Second Party Verification Personnel (QE&C):
6.3.1 Shall accompany walkdown personnel and perform an independent review and verification of information taken by the DNE walkdown leader (included in Section 6.2.2).
6.3.2 Shall sign and date the applicable walkdown inspection report forms (Attachments 1 and/or 2).
Verifying completness and accuracy of walkdown information.
7.0 QUALIFICATIONS OF WALKDOWN PERSONNEL
- s.1 DNE Walkdown Leader 1
Must be a senior level engineer (SC-4) who is familiar with this walkdown procedure and the SQN plant and its systems. Hg must also be familiar with DNE documentation procedures.
7.2 DNE Walkdown Package Coordinator Must be at a minimum an engineering associate who is familiar with DNE drawings, DNE procedures, SQN drawings, and the documentation requirements for this walkdown, s
7.3 Second Party Verification QE&C personnel qualified to verify data gathered during the walkdown.
8.0 DOCUMENTATION The completed walkdown packages (three) shall be handled as a QA record in accordance with AI-7 requirements and will contain the following documentation as a minimum.
8.1 Data Package Cover Sheet (Attachment 3) will be used on each of the three packages.
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SQN SMI-0-317-41 Page 6 Revision 0 8.0 DOCUMENTATION (continued) 8.2 All inspection report forms (Attachments 1 and 2) depicting walkdown data which will be signed and dated by appropriate walkdown and second party verification persoanel.
8.3 Documentation of any violations shall be handled in accordance with SQM2 (WR written) and the WR number recorded in comments section.
8.4 A roster, Attachment 4, shall be used to record all personnel receiving instruction of the contents of this procedure and will become part of the final report. Roster will contain job title, schedule and grade as a minimum. The final report will be
.rcepared by DNE and wil, include completed Attachment 1 and 2 checklists.
9.0 SPECIAL INSTRUCTIONS 9.1 Activity number is SQ TMS02EIO9432SP 9.2 Walkdown account number is 30SP-765071-98,9432 9.3 Any areas that are inacessible due to contamination or other reasons, will be so noted on the inspection report (Attachments 1 and 2) and evaluated later by instruction change.
l 9.4 DNE should complete Appendix H of AI-g after completion of walkdown to cancel this SMI.
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9.5 Any missing covers will be tagged wi5h WR.
0261Q/jac
'o M /3 SQN SMI-0-317-41 Page 7 Rtvision 0 Page 1 of I Cable Tray Check List Node Voltage Level Prepared BY Date Checked BY
___0C Date Segment Name Location Tray Solid TSI Tray Dws & Rev Conynents Begin: Nodes: End Col Elev Cover Bottom WRP S.L. Dwg & Rev J
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Page 8 Revision 0 Attachtnent 2 Page 1 of 1 Conduit Check List Node Voltage Level Prepared By
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Date Conduit Number Conduit TSI C & G Dwg No.
Corrments Location WRP
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SON SMI-0-317-41 Page 10 Revision 0 ATTACHMENT 4 Page 1 of I
-Training Subject Date Train Code -
Instructor Method of Instruction (Signature)
Hours Offered Instructor Hours Attended (Print)
NAME (PRINT)
LAST FIRST HI
- NAME (SIGNATURE)
SOCIAL SECURITY NUMBER SECTiUN i
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SQN SMI-0-317-41 Page 9 Revision 0 Page 1 of 1 DATA PACKAGE COVER SHEET I.
To be completed by the originator of the data package. List all documents included as part of this data package.
1.
WR Number (s):
2.
SMI-Data Package Cover Sheet (s):
(
each) 3.
SMI- - - Inspection Report Sheet (s):
(
each).
4.
SMI- - - Inspection Report Sheet (s):
(
each).
5.
Other Documents:
All required documentation is in the data package.
/
Originator of Data Package (DNE)
Date II.
Final Review of Package
/
DNE Package Coordinator Date III.
Results review and approval of the data package (attached).
/
QA Engineer Date 0261Q/jac
ENCLOSURE 4 PROJECT MANUAL SAMPLING FOR CABLE AMPACITY
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.DEVISION OF NUCLEAR ENGINEERING (DNE)
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SECTION VIII SEQUOYAR ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE PROJECT MANUAL SQEP-47, REVISION 1 SEQUOYAR ENGINEERING PROJECT PROJECT MANUAL SEQUOYAH ENGINEERING PROCEDURE SQEP-47 e
SAMPLING FOR CABLE AMPACITY b@
PREPARED / SUBMITTED DATE REVIEWED DATE i
APPROVED DATE o
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, 'D1 VISION OF NUCLEAR ENGINEERING (DNE)
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SECTION VIII SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE PROJECT MANUAL
,SQEP-47, REVISION 1 i
1.0 Purnose nnd Scope This procedure is for verifying the adequacy of ampacity of auxiliary and control power cables in voltage levels V3, V4, and V5, installed prior to the isbuance of DS-E12.6.3 R0.
This is a new Design Standard governing allowable ampacity that may impact previous design of cables at Sequoyah Nuclear Plant (SQN) Units 1 and 2.
Design Standards DS-E12.1.1 through DS-E12.1.4 are superseded by DS-E12.6.3 (R1 issued 11/7/ 86). The evaluation of previously designed and presently installed cable shall be accomplished by an established multi-sampling program as outlined by this procedure in accordance with Military Standard MIL-STD-105D issued 4/29/63 (ref:
W. S. Raughley's memorandum to Those listed dated October 7,1986 (B43 861008 909).
2.0 Methodolony All Class 1E and non-Class 1E auxiliary and control power cables routed in IE voltage levels V3, V4 and V5 raceways at SQN, shall be identified by sorting the computer routed cable data base. Due to the large numb 9r of cables, each of these sorts will have an " inspection lot" defined for inspection purposes.
Cables will be grouped into a total of 9 lots (see Section 4.4).
Once all cables are identified, 6 lots will be established through research of design drawings, field walkdowns, and assumptions as specified by this procedure for V4 and V5 cables. Once the 6 lot sizes are defined, a sample size for each lot will be determined in accordance with MIL-STD-105D.
V3 cables will be divided into 3 lots as described in paragraph 3.2.1.
At this point, an analysis of cable allowable ampacity shall be performed on the samples in accordance with DS-E12.6.3.
Based on MIL-SID-105D, a predetermined error rate shall be determined for each lot.
Failures shall be documented in accordance with the SCR process defined in NEP-9.1.
Failure and/or success shall be fully documented in a design calculation in accordance with NEP-3.1.
A determination shall be made as to the possible generic implication of any failure.
If determined to be an isolated case, the condition will be documented and the sampling continued.
If generic in nature, a further review shall be conducted.
3.0 Tdentification of Cables for Consideration 3.1 The Conduit and Cabling Section must obtain the following sorts from ECB to identify all potential subject cables:
A.
V3, Class 1E and nen IE cables routed in tray V3, Class 1E and non IE cables routed in conduit (only)
V3, Class 1E and non IE cables routed in conduit that are Appendix "R" B.
V4, Class IE and non IE cables routed in tray V4, Class 1E and non IE cables routed in conduit (only)
C.
VS, Class 1E and non IE cables routed in tray V5, Class 1E and non IE cables routed in conduit (only) s SQEP ONSITE 1
SQEP47
_[
DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIII
' SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE P/
}/ y4-PROJECT MANUAL SQEP-47, REVISION 1 v
3.0 Identification of Cables for Consideration (Continued)
Flease note ggggg obtained for use in this activity are not reproducible and are base documents and must be included as an
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attachment to the design calculation covering this activity (see Section 7.0).
In addition, maintain all batch runs made after the date on which the above sorts are run.
This will be necessary to identify cables added during the time frame between the above sorts and sorts obtained in Section 4.2.
Since cable routed during this time frame are sized in accordance with DS-E12.6.3, these cables will not require analysis.
3.2 The ampacity evaluators shall review design drawings and the V3 printouts obtained in Step 3.1, in accordance with paragraph 3.2.1, in order to identify only the " control power cables" of concern from " control cables" to be analyzed. Cables identified as control cable shall also have the cable number and full load current entered on the cable ampacity sampling checklist sheet (Attachment 5) with all the reference documents listed under Notes and References. Cable Ampacity Evaluation Sheet (Attachment 6) will not be filled for the control cables.
Please note each activity (such as the above) must be initialed by a preparer and checker.. In the event each sheet is not
,' developed by the same prepsrer and/or checker, each line or lines of identifiers marked out must be initialed and dated by preparer and checker.
3.2.1 Selection of V3 Level Control Power Cables Due to the large quantity of V3 level cables, to facilitate the sampling process and analysis, the V3 level i
cables are divided into three sorts as detailed below:
1 SORT 1.
Cables Routed in Cable Tray SORT 2.
Cables Routed in Conduit SORT 3.
Cables Routed in Conduit that are Appendix "R" A computer printout for each of the above sorts shall be obtained and cables in each sort numbered sequentially.
Then, with a IBM PC computer, using a random number SQEP ONSITE 2
SQEP47 2
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DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIII SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE bg PROJECT MANUAL SQEP-47, REVISION 1 3.0 Tdentification of Cables for Consideration (Continued) 3.2.1 Selection of V3 Level Control Power Cables (Continued) generator function, an adequate number of cables from each of the above three sorts shall be selected for analysis.
This analysis shall determine which are
" control power cable" using EEB's Central Staff directive (see attachment 4).
Those V3 level cables selected by the computer that are not control power shall be rejected.
The procedure is followed until the required number of samples from each of the three sorts is collected for evaluation of ampacity.
The list of V3 cables in conduit that are Appendix "R" (sort 3) selected for analysis by the computer will contain cables in conduit with and without fire-wrap.
As the cable list is analyzed, those cables that are routed in conduit without fire-wrap shall be excluded and only those cables routed in conduit with fire-wrap will be considered to determine whether the cable is a " Control Power Cable" or not.
A small number of V3 cables that are channelized, will be handled manually and added to the three V3 cable rorts,.
(sorts 1, 2 or 3) depending on the way they are routed.
Also, these cables will be included in their respective sort in cable number sequence.
The sample size shall be determined per MIL-STD-105D section 5.0 and analysis performed in accordance with section 6.0 of this procedure.
NOTE A large quantity of V3 cables were evaluated by the random selection process to determine if they were control power. This effort was stopped when there were not enough cables found meeting the control power requirements.
4.0 Development of Inapection Lots 4.1 The ampacity evaluators shall review the cable tray drawings, node diagram drawings, and condnit and grounding drawings as applicable to identify the following:
A.
Tray Segments with Tops only (by ncde points)
B.
Tray Segments with Bottoms only (by node points)
C.
Tray Segments with Tops and Bottoms (by node points) s SQEP ONSITE 3
SQEP47
1
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DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIII SEQUOYAH. ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE 23 PROJECT MANUAL SQEP-47, REVISION 1 4.0 Development of Inspection Lots (Continued)
I D.
Tray Segments with Fire Wrap (by node points)
If the design drawing gives an 22112A for removing tray covers prior to installing fire wrap, assume trav covers (top and/or bottoms as annlicable) are installed. Denote these sections as they are identified.
E.
Conduits of the voltage level V4, V5, and V3 with Fire Wrap.
Please note:
1.
Section 4.1 A B, C, and D applie#s only to V4 and V5.
2.
See tray and conduit formats (attachments 1 and 2) for the minimum information required.
Be sure all columns are completed (enter N/A where applicable).
4.2 The conduit and cabling section shall obtain the following sorts t
(of the cable data base from ECB) in order to determine the cable of concern by lot (See Section 4.4).
A.
V4, all cables between node points identified per data sheet generated in Section 4.1 B.
V5, all cables between node points identified per data sheet generated in Section 4.1 C.- V3, all cables between node points identified per data 4
sheet generated in Section 4.1
- D.
V4, list of cables in conduits identified in Section 4.1
- E.
V5, list of cables in conduits identified in Section 4.1
- F V3, list of cables in conduits identified in Section 4.1
- Copies of microfiche are an alternative for identifying cables in conduit.
The above sorts and/or microfiche copies are non-reproducible documento and must be maintained for inclusion into the design calculation as an attachment (see Section 7 0).
4 4.3 EEB Central Staff shall provide additional written guidance for types of node voltage equipment whose cables may be excluded.
l (If this is or is not used by SQEP, the calculation must make reference to this information and state why or why not used).
4.4 Ampacity evaluators shall match data obtained in section 3.1, 3.2, 4.2, and 4.3 (as applicable) to identify sampling lots.
l The sampling lots shall be selected at random from 9 inspection lots. The inspection lots are as follows (refer to Design i
Standard E12.6.3 for the definition of the various voltage
(
levels):
1.
V3 level cables routed in tray.
3 SQEP ONSITE 4
SQEP47
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DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIII SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE d Jf~
PROJECT MANUAL SQEP-47, REVISION 1 4.0 Development of Inspection Lots (Continued) 4.4 (Continued) 2.
V3 level cables routed in conduit without Appendix R fire wrap.
3.
V3 level cables routed in conduit with Appendix R fire wrap.
4.
V4 level cables routed in tray without tray covers, bottoms or Appendix R fire wrap.
5.
V4 level cables routed in tray with tray covers and/or bottoms and/or Appendix R fire wrap.
6.
V5 level cables routed in tray without tray covers, bottoms or Appendix R fire wrap.
7.
V5 level cables routed in tray with tray covers, and/or bottoms and/or Appendix R fire wraps.
8.
V4 and V5 level cables routed in conduit without Appendix R fire wrap.
9.
V4 and V5 level cables routed in conduit with Appendix R fire wrap.
For each of the inspection lots shown, the conduit and cabling section shall determine the total number of units (Class IE cables or non-Class IE cables routed with Class IE cables) in that lot.
Each such cable should be counted only once and included in the inspection lot reflecting the most limiting raceway configuration for ampacity in which it is routed.
If during selection of cables from different cable sorts (inspection lots), it is found that a sort (s) contain cables that do not belong in the sort in which it is entered (e.g. cable in tray entered in conduit sort or cable in conduit without firewrap entered in sort with cables routed in conduit with firewrap),
these cables shall be separated out, formed into a small inspection lot of their own and analyzed using the sampling procedure for the smaller size or in entirity depending upon the number of cables in the small inspection lot.
For final evaluation, the smaller inspection lots will be grouped with respective larger inspection lot of the same sort.
3 SQEP ONSITE 5
SQEP47 E
DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIII SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE PROJECT MANUAL 7
/
SQEP-47, REVISION 1
)
4.0 Development of Inspection Lots (Continued) 4.4 (Continued)
The order of raceway configurations by service level from most limiting to least limiting are as follows:
1.
V3-level A.
Inspection lot 1 B.
Inspection lot 3 C.
Inspection lot 2 2.
V4-level A.
Inspecticn lot 5 B.
Inspection lot 9 C.
Inspection lot 4 D.
Inspection lot 8 3.
V5-level A.
Inspection lot 7 B.
Inspection lot 9 C.
Inspection lot 8 D.
Inspection lot 6 Also as an exampic, cables routed in V4 or V5 1.? vel trays with tray covers and/or bottoms and/or Appendix R fire wrap shall not be counted again in other inspection lots even if they are additionally routed in such.
4.5 Upon completion of cable ampacity checklist, the ampacity evaluators shall prepare and complete the cable ampacity evaluation summary sheet (Attachment 6) for all evaluated cables s
except V3 level control cables.
5.0 Identify sample size (conduit and Cabling Section)
After the total number of units in each inspection lot is determined (per Section 3.0 and 4.0 above) the sample size code letter shall be selected from the attached Military Standard 105D Table I for General Inspection Level II (See Attachment 3, sheet 3).
Following selection of the code letter, sample size is specified for multiple sampling plan in Table IV-A (see Attachment 3, sheet 4 or 5).
The acceptable quality level is 4.0 (see Attachment 3, sheet 5).
6.0 Annivsis Note: Prior to analysis it must be ensured that:
s SQEP ONSITE 6
SQEP47
. DIVISION OF NUCLEAR ENGINEERING (DNE)
' SEQUOYAH ENGINEERING PROJECT (SQEP)
SECTION VIII PROJECT MANUAL SEQUOYAH ENGINEERING PROCEDURE SQEP-47, REVISION 1 bOf 6.0 Analysis (Continued) 1.
NEB must issue maximum normal ambient temperatures for areas identified by Conduit and Cabling section as having cables routed in them.
The temperature value is that temperature not exceeded for 5 hours5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> or longer.
2.
ECB must add the new cable weights and 0.D. 's to the computer cables data base.
3.
EEB Central Staff must issue design standard DS-E12.6.3 with all multiplying factors for Fire Wrap, additional ambient temperature, tray covers, etc.
,o 4.
EEB Central Staff guidance (see Section 4.3) 5.
Random selection generator to be provided for personal computer.
6.1 Selection of Samoles Once the ampacity evaluators have established the first sample size for each lot (See Section 5.0), they shall randomly select cables from the inspection lot as follows:
The random selection shall be made by a personal computer random number generator program. The number selection shall be printed by the personal computer and witnessed by two people and documented.
6.2 Evaluation of V4 and V5 Cables in Tray for Temperature and Environment As cables are identified as randomly selected samples from lots 4, 5, 6, and 7 by the ampacity evaluators, those cable numbers are forwarded to the conduit and cabling section.
The conduit and cabling section shall determine the tray segments the cable is routed through along with all other cables routed in the tray.
The following steps shall be performed by the conduit and cabling section for cable temperature and environmental tonsiderations.
6.2.1 The tray segment routing of the cable shall be determined f rom the cable schedule micro-fiche directly from the data base. Cable tray single line drawings shall be used to determine the node points for the tray segment.- A printout of all cables in a segment between node points shall be obtained.
The sample cable (s) is identified on each node point printout by an asterisk.
t 6.2.2 A computer printout shall be obtained for each tray segment by node points which is described in paragraph 6.2.1 above.
The environmental drawings are then used to determine if the tray segment is in a harsh or mild environment. The evaluation shall also include determining the maximum normal ambient temperature form the appropriate environmental drawing.
The maximum normal SQEP ONSITE o 7
SQEP47 i
i k
- DIVISION OF NUCLEAR ENGINEERING-(DNE)
SECTION VIII
- SEQUOYAH ENGINEERINC PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE PROJECT MANUAL SQEP-47, REVISION 1 1/d ambient temperature, mild or harsh environment and the environmental drawing number shall be entered on the tray segment cable list printout.
6.2.3 The sample cables (s) in the tray segment shall be checked to determine if the calbe is a required 10CFR50.49 cable.
A circle shall be drawn around the cable number on the printout if the sample cable (s) is 10CFR50.49 required.
If the sample cable is in a harsh environment and 10CFR50.49 required, the temperature rating shall be the EQ value entered in the EQ binders.
If the sample cable is "10CFR50.49 required" and routed in a mild environment, the manufacturers temperature rating for the cable shall be used. All other cables that are "not 10cFR50.49 recuired" shall use manufacturers 6emperature for both mild and harsh environments.
6.2.4 To determine the manufacturers temperature for non-10CFR50.49 required cables, DS-E12.6.3 table I shall be used.
The temperature may also be detennined frem contract data in cases where the insulation type and mark number may not agree with DS-E12.6.3.
For "10CFR50.49 required" cables the contract number must be known to find the correct EQ binder temperature when routed in a harsh environment.
6.2.5 The data gathered by the conduit and cabling section shall be added to the tray segment printout and returned to the ampacity evaluation group.
Tha tray segment printouts can have tray segments that go through both mild and harsh environments depending on the tray node points in the route.
The ampacity evaluators shall determine the most severe conditions of the cable route.
6.2.6 As an aid to final evaluation, tray fill data, in percent, for each cable tray segment and between each node point or points through which the cable is routed, shall be prepared for each cable listed.
6.3 Ampacity Calculation The ampacity evaluators shall calculate the allowable ampacity using:
1.
The configuration established in section 3.0 and 4.0 2.
DS-E12.6.3 values (including multiplying factors) 3.
Actual load current in the cable.
SQEP ONSITE 8
SQEP47 3
b
__--.,m-.
m,y.,-.,.
,m y
.w
...__.r.--
DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIII SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE PROJECT MANUAL SQEP-47, REVISION 1
/l) Q)-
6.3 Ampacity Calculation (Continued) 4 NOTE The load current shall be determined by the ampacity -
evaluators using existing documentation when possible, and the ampacity evaluators shall document all references for obtaining load current.
The above approach shall be used to evaluate whether the sample cables of a particular sort meet the requirements of DS-E12.6.3 RI. Depending on the number of cables which do not appear to meet the Design Standard requirements under this conservative evaluation, the ampacity evaluation team management may choose to evaluate additional sample lots or may choose for a 100 percent review of any given inspection lot.
l 7.0 Documentation of Effort The activity covered by this procedure is to evaluate the adequacy of previously designed and installed cables per the new requirements for ampacity cable sizing established by DS-E12.6.3.
Therefore, for future use (audits, etc.), a one time calculation in accordance with NEP 3.1 is required.
7.1 Ampacity evaluators shall be responsible for preparation of this calculation.
7.2 Each involved organization and/or section shall ensure each activity is performed and properly approved.
In addition, they shall provide a sheet for inclusion into this calculation that contains the name and initials of persons initiating and checking the documents. Data provided to the ampacity evaluators shall be dated and initialed on the data submittal.
7.3 Since computer sorts are not reproducible and are base documents, all of these sorts from the cable data base must be included as an attachment to the calculation.
7.4 Design documents used by the preparer and checker, but not marked up or otherwise modified, only require reference to that document and revision level (such as drawings) in the calculation.
However, if documents are modified by marks, denotation, etc.,
and are not retrievable, include these documents as attachments to the calculation.
1 NOTE Each organization or section involved must comply.
Each involved organization must provide documents specified in Sections 7.2, 7.3, and 7.4 to EEB's Conduit and Cabling section for inclusion in the design calculation.
SQEP ONSITE 9
SQEP47 4
1
-n.-
,r-c--
DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIII SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE hg PROJECT MANUAL SQEP-47, REVISION 1 7.0 Documentation of Ef fort (Continued) 7.5 Once an SCR is initiated, its number shall be documented in the calculation.
In addition, the SCR is to reference this calculation. The SCR cannot be closed prior to issuance of the design calculation.
8.0 ATTACHMENTS 8.1, Cable Tray Check List 8.2 Attachment 2, Conduit Check List 8.3 Attachment 3, Sampling Procedures and Tables For Inspection By Attributes (MIL-STD-105D) 8.4 Attachment 4. Separation of V3 Control and Control Power Cables 8.5, Cable Ampacity Sampling Check List 8.6 Attachment 6 Cable Ampacity Evaluation D
i f
a SQEP ONSITE 10
l DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIII SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE PROJECT MANUAL
/2 ;
SQEP-47, REVISION 1
^
\\
k ATIACHMENT 1 SHEET 1 0F 2
(
CABLE TRAY CHECKLIST INSTRUCTION This checklist shall be completed fran design data,to identify V4 and V5 cable ampacity derating areas as required by DS-E12.6.3 Revision O.
Design data shall be obtained from TVA records or manuf acturer's information; if not available, required data will be calculated. A preliminary walkdown will be conducted to help expedite placing these in the proper lot. A PORC approved walkdown will be complated and any correction evaluated prior to selecting the samples frem the lot.
s, If design drawings require tray covers or bottoms, or fire-wrap, assume them to be in place unless documented that they cannot be installed.
This would include physical obstructions etc., not shown on drawings.
\\
1 s.
A w
k i
o SQEP ONSITE 11
DIVISICN OF NUCLEAR ENGINEERING (DNE)
SECTION VIII SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE /
PROJECT MANUAL SQEP-47 REVISION 1 ATTACHMENT 1 SHEET 2 0F 2 CABLE TRAY CHECK LIST NODE VOLTAGE LEVEL PREPARED BY DATE CHECKED BY QC DATE SECMENT NAME BEGIN: NODES:END LOCATION TRAY SOLID TSI TRAY DWG & REV COMMENTS S.L.
DWG & REV COL ELEV COVER BOTTOM WRP 6
6 e
e A
3 SQEP ONSITE 12
f DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIII SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE PROJECT MANUAL j9 d6, SQEP-47, REVISION 1 ATTACHMENT 2 SHEET 1 0F 2 l
CCNDUIT CHECKLTST INSTRUCTION l
t This checklist shall be completed f rca design data. Design data shall be obtained from TVA records or manufacturer's information; if not available, required data will be calculated. The completed list of conduits will be all V3, V4 and V5 conduits that have fire-wrap. A preliminary walkdown will be conducted to help expedite placing cables, in inspection lots. A formal PORC walkdown will be completed and corrections evaluated prior to selecting samples from V4 and V5 lots.
Appendix "R" interaction items requiring TSI wrap will be used to establish the baseline list of conduits.
In cases where more than one conduit is enclosed in the same wrap, each conduit will be considered as wrapped individually.
4 l
e SQEP ONSITE 13
- DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIII SEQUOYAH EEGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE PROJECT MANUAL SQEP-47, REVISION 1
/f ATTACHMENT 2 SHEET 2 0F 2 CONDUIT CHECK LIST NODE VOLTAGE LEVEL PREPARED BY _
DATE CHECKED BY QC DATE CONDUIT LOCATION TSI C & G DWG NO CONDUIT NUMBER COL ELEV WRP
& REV' COMMENTS SQEP ONSITE
- 14 SQE?47
.T n/w Ml!_lTARY STANDARD ATTA C.HM C-NT 3 PAGE l of 5
SANPUNG PROCEDURES AND TAB!.2
~
FOR INSPECTION BY ATTRjBUTES g
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02T21MINATICN C7 ACC:'?7ABluTY Pass 2 e5 if~
,. 4 10.1 P!2CINT DIFICTNI INSPECTICN.
1
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'To determina acceptability of a lot or batch number of defectives found in the n
. }
wf under percent defective inspection, the ap.second samples shall b accumulated. If the 65f
'plicable sampling plan shall be used in cumulative number of defective is equal to 10.1.1,10.1.2,10.1.3, 10.1.4, or less than the second acceptance r. umb accordance with d
the lot or batch shall be considered xcep J"
. and 10.1.5.
ind able. If the cumulative number of de
$lNGL2 5AMPUNG PLAN.
is equal to or greater than the second reje d
10.1.1 Le b
number of sample units inspected shall be tion number. thelot or hatch shall be rejectad N'
equal to the sample size given by the plan.
10.1.3
.hh If the number of defectives found in the multiple sampling, the procedure shall be MULTIPLE 5AMPt2 PLAN. Unde sample is equal to or less than the acceptance h
number, the lot or batch shall be considered simb to that speed.d 610.1.2, ept ht acceptable. If the number of defectives is the numbe. of successive samples require t
{,rp equal to or greater than the rejection num, reach a decisi n may be more than two.
ber, the lot or batch shall be rejn ted.
a h
10.1.4 D'UCID INSPECT!CN.SP ECI A 1
Ejj Under reduced in-3 10.T.2 M
DCU3L2 SAMPUNG PLAN. The spection, the sampling procedure may termi-M number of sample units mspected shall be nate without either acceptance or rejection equal to the Srst sample size given by the criteria having been met. In these circum.
$I plan. If the number of defectives found in stances. the lot or batch will be cons:d the first sample is equal to or less thmn the acceptable. but normai inspection will be first acceptance number, the lot or batch retestated startng with the next Si lot hi W
ahn11 be considered acceptable. If the num-batch (see 8.3.4 (b)).
g or If ber of defectives found in the first sample is 10.2
?
h equal to or greater than the first rejection DEFECTS PER HUND2ED UNIT 0,;
number, the lot or batch shall be rejected.
SPECTICN.
of a lot or batch under Defects If the number of defectives found in the first sample is between the first acceptance and Units inspection, the procedure specifed l
rejection numbers, a second sample of the Percent Defective mspection above shmE size given by the plan shall be inspected. The used, except that the word " defects" shall b sub:tituted for "defectives."
k Q
11.
b-SUPPLEMENTARY INFC2MATICN 11.1 h
O P I R A TI N G CHARACTO!STIC
~
Ctavts. The operating ch2rseteri.-tic curves and multiple sampling are matched as clo
{fj for normal inspec+1on, shown in Table X as practuble. The O. C. curves shown for p
(pages 30-42), InAWte the percentage of AQLa greater than 10.0 are based en the J
f lots or hatches which may be expected to bePoisson distribution and are applicable for O
accepted under the various sampling plans defects per hundred units inspection; those h
for a gxven process quality. ne curves shownfor AQIa of 10.0 or less and sample sizes o are for single sampling; curved for double 80 or less are based on the binomia v
W bution and are applicable for percent defee-t 1
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tot ce batch size General inspection levels 1
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A A
A A
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91 to 150 D
D C
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D F
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t.
151 io 280 0
C D
E E
C 11 281 to 500 u
C D
E F
11 J
.I 501 to 1200 C
C E
h y
fe j,
C J
K 1201
, to 3200 C
D E
G ll K
L 3%1 to 10000 C
D F
G J
L W
10001 to 35000 C
D F'
11 K
W N
O SNa 3
s 35001 ad 150 D
E G
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C/j6r
. DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIlt SEQUOYAH ENGINEERING PROJECT (SQEP).
SEQUOYAH ENGINEERING PROCEDURE PROJECT MANUAL SQEP-47, REVISION 1 ATTACHMENT 4 -
SHEET 1 0F 1 SEPARATION OF V3 CONTROL AND CONTROL POWER CABLES Control power cables are those cables routed in a V3-level raceway whose load current for the particular conductor size could produce sufficient heat to warrant consideration. As V3-level cables are, by definition, limited to less than 30 amperes t ' 's consideration is restricted to conductor size No. 8 AWG and snailer. Therefore, control power cables are defined as a No. 8,10,12 or 14 AWG conductor installed in a V3 raceway with a load current greater than indicated belcw:
EXCEPTION:
No.10,12 or 14 AWG conductors whose load current does not exceed 15 amps and whose load operation does not exceed a total of 20 minutes in any 5 hour5.787037e-5 days <br />0.00139 hours <br />8.267196e-6 weeks <br />1.9025e-6 months <br /> interval.
Cables which meet the exception or whose load currents are below those indicated do not warrant further consideration of ampacity and are considered control power cables.
Is a control power cable if the load current exceeds:
Conductor Size (Amperes) 14 6
12 8
10 12 8
22 I
SQEP ONSITE 20 SQEP47
.s DIVISION OF NUCLEAR ENGIREERING (DNE)
SECTION VIII SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE A PROJECT MANUAL
.2g SQEP-47, REVISION 1 ATTACHMENT 5 SHEET 1 0F 3 CABLE AMPACITY SAMPLING CHECKLIST INSTRUCTION This checklist is used for Placing the cable in its proper lot and later will be used for final evaluation. For placing a cable in its proper lot, the following information must be completed.
V3 LEVEL 1.
Enter voltage 1.evel.
2.
Enter cable number.
3.
Is tray in route? If yes, enter lot L; if no, go to step 4.
4.
If cable is in conduit, all numbers should be entered and evaluated for fire-wrap.
If no fire-wrap is found, enter lot 2; if fire-wrap is found, enter lot 1 V3 cable samples have been randomly selected (see paragraph 3.2.1) and placed in lots.
V4 and V5 will be placed in lots and then the samples randomly selected.
V4 LEVEL 1.
Enter voltage level.
2.
Enter cable number.
3.
Is cable in tray? If yes, list tray segment names for evaluation of covers or bottoms, or fire-wrap.
If tray has covers or bottoms, or fire-wrap, enter lot 1 If in tray without covers or bottoms, or fire-wrap, enter lot 4.
4.
If cable is in conduit -nly, list all conduits the cable is routed through, for determination of fire-wrap in the conduit.
If conduits do not have fire-wrap, enter lot 8.
If conduits do have fire-wrap, enter lot 2 V5 LEVEL 1.
Enter voltage level.
2.
Enter cable number.
3.
Is cable in tray? If yes, list tray segment name for evaluation of covers or bottoms, or fire-wrap.
If tray has covers or bottoms, or fire-wrap, enter lot 1 If in tray without covers or bottoms, or fire-wrap, enter lot 6.
SQEP ONSITE 21 SQEP47
- -. ~
- ~.., +
DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIII SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE ;
PROJECT MANUAL SQEP-47. REVISION 1 ATTACHMENT 5 SHEET 2 0F 3
~
4.
If cable is routed in conduit only, list all conduits the cable is routed through for determination of fire-wrap in the conduit.
If conduits do not have fire-wrap, enter lot R.
If conduits do have fire-wrap, enter lot 1 V4 and V5 lot sample size and ampacity evaluation is described in the preceding procedure. After the final samples are selected, additional data may be added to this checklist as required. -
All V4 and V5 cable ampacity checklists will be placed in their proper lot and sorted by cable number. Each sheet in the lot will then be numbered sequentially for the random selection of samples.
b i
S SQEP ONSITE 22 SOEP47
b 4
.. c 7
DIVISION OF NUCLEAR-ENGINEERING (DNE)
. g?
SEQUOYAH DIGINEERING PROJECT (SQEP)
SECTION VIII PROJECT MANUAL SEQUOYAH ENGINEERING PROCEDURE
+ s';
SQEP-47. REVISION O ATTACl! MENT 5 SIIEET 3 0F 3 CABLE AMPACITY SAMPLING Cl!ECKLIST PREPARED BY:
DATE:
LOT NO.:
RANDON NO.:
CllECKED BY:
DATE:
VOLTAGE LEVEL:
SORT:_
SAMPLE CABLES CONDUIT ASSOCIATED TRAY CABLES CABLE NO. AND MARK CONDUIT TSI CABLE MARK SEG SLD
% FILL TSI CABLES /
ABANDON F.L. CURRENT NO.
NUl1BER WRP NUMBER NO.
NC ID CVR BOT V-4/5 F77 WRP CO!!!!ENTS S$
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NOTES AND REFERENCES 4
qO SQEP ONSITE SQEP47 i,
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' ' DIVISION OF NUCLEAR ENGINEERING (DNE)
SECTION VIII
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SEQUOYAH ENGINEERING PROJECT (SQEP)
SEQUOYAH ENGINEERING PROCEDURE d3 PROJECT MANUAL SQEP-47. REVISION 1 ATTACHMENT 6 SHEET 1 0F 1 CABLE AMPACITY EVALUATION COMPUTED BY DATE CHECKED BY DATE i
1.
Cable Serial Number : V
-S (C=Coaduit CW=Cond. Wrap T= Tray TW= Tray Wrap) 2.
Cable Number (s) s 3.
Cable Mark Number (s):
4.
Cable Description 5.
Full Load Current-AMPS Special Remarks:
6.
For Motors 125% FLC :
AMPS 7.
If 2 or More Cables :
AMPS Load on One Cable 8.
New Ampacity per AMPS DS-E12.6.3 R0 (Before Correction)
Derating Factors 9.
Tray Tcp Cover 10.
Tray Top & Solid Botton
- 11. Appendix R Fire Wrap:
- 12. Fire-Protective Coating
- 13. Fire-Scal 14.
Grouping Factor
- 15. Allowed Ampacity (After Deratin; Correction)
- 16. Actunt Ampacity (Line 7) 17.
Result 2
Pass / Fail SQEP ONSITE 24 SQEP47
ENCLOSURE 5 ELECTRICAL DESIGN STANDARD CABLE AMPACITY TABLES e
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N TVA 61(05 945) (CP W7 5 85) 1.*NITED STATES COVEIIN5 TENT Memorandum TENNESSEE VALLEY AUTHORITY TO
- Those listed W. S. Raughley, Chief Electrical Engineer W8 C126 C-K FRON DATE
- November 10, 1986 ELECTRICAL DESIGN STANDARD DS-E12.6.3 R1
SUBJECT:
Attached is an advanced, uncontrolled copy of TVA Electrical Design Standard DS-E12.6.3R1, " Cable-Ampacity Tables for Auxiliary and Control Power Cables (0-15,000V)" for your use.
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W. S. Raughley L. A.-Sas, W12 A8 C-K R. R. Hoesly, 9-113 SB-K J. R, Lyons, DNE, 10B-C102 WBN
/ T. G. Chapman, DNE A10 BFN D. W. Wilson, DNE, DSC-E, SQN D. F. Faulkner DNE, A7-BFN R. C. Williams, DNE, DSC-A, SQN J. D. Collins, DNE 10B-C110 WBN E. O. Massey, 7-193 SB-K JRB:RE Attachment Principally Prepared By:
James R. Baumann, Extension 3467 I
DNE1 - 1380W
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