ML20199E640
| ML20199E640 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 09/13/1985 |
| From: | Patterson A NRC - COMANCHE PEAK PROJECT (TECHNICAL REVIEW TEAM) |
| To: | |
| Shared Package | |
| ML20199D912 | List:
|
| References | |
| FOIA-86-36 NUDOCS 8606230346 | |
| Download: ML20199E640 (15) | |
Text
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COMANCHE PEAK RESPONSE TEAM POPULATION ITEMS LIST Page 1 of 6 POPULATION NAME:SMALL BORE PIPING.AND INSTRUMENT TUBING / PIPING WELDS / MATERIAL PREPARED BY:
44/&t, N DATE: SEPTEMBER 13. 1985 RESPONSIBLE QA/QC SUPPORT ENGINEER POPULATION ITD4S LIST DESCRIPTION:
The Population Items List is the Brown & Root (B&R) Comanche Peak CCTS System Report (WEC-C-WE-REPORT), issue date 06/12/85. This regort herein after referred to as the "WEC-C-WE-REPORT",is a computer sort listing all
' safety related "Q" and construction complete [i.e., Quality Control (QC) accepted] large and small bore piping and instrument tubing / piping welds.
The definition of "QC Accepted" welds is: All site-made welds in the population that are construction complete and have been accepted by QC as documented by QC signature on the Brown & Root (B&R), Weld Data Cards (WDCs).
NOTES:
1.
Craig Computer Tracking System (CCTS) 2.
Each item was assigned a sequential number when the sort was made.
POPULATION ITEMS LIST SOURCE:
The "WEC-C-WE-REPORT" was provided by B&R, and is a sort performed on the B&R Comanche Peak CCTS System Report (Welding Engineering Component Master), herein after referred to as the Welding Engineering Component Master Report.
I BASIS FOR ACCEPTING THE LIST:
The Welding Engineering Component Master Report is a computerized data base generated by the B&R Welding Engineering Paper Flow Group (FFG) and is used to track the construction progress of site-made welds, flanges, valves and other types of components.
Input to this report is obtained from design documents such as Isometric Drawings or Component Modification Cards (CMCs). Data is entered on a daily basis by members of the B&R PFG.
In addition, upon receipt of documentation packages of i
site-made welds via an "Interin Vault Transmittal Form" from the PFG, the Interim Record Vault (Plant Data Entry Group) also provides input to the report. The contents of the packages are checked against the transmittal form for completeness. This form is then used to input information into the report. This input is then rechecked by a third l'
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QA/QC LEAD DISCIPLINE ENGINEER APPROVED BY:
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SUPERVISOR 8606230346 860609 PDR FOIA CPP-005.3A Revision 0 QARDE86-36 PDR M R-SLffaiR Tl
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COMANCHE PEAK RESPONSE TEAM POPULATION ITEMS LIST Page jt of 6 1
POPULATION NAME:SMALL BORE PIPING AND INSTRUMENT TUBING / PIPING WELDS / MATERIAL PREPARED BY:
-[Aswt N /dann RESPONSIBLE QA/AC SUPPORT ENGINEER BASIS FOR ACCEPTING THE LIST (Cont'd) party within the Plant Data Entry Group. Data entry to the report is performed in accordance with the CCTS BRP Component Files-Data Entry l
Procedure", issue date 10/26/82, Rev.0.
j Pertinent data to the QA/QC Construction Evaluation Plan provided in the report (in columns) is as follows:
i
- Isometric "IS0" drawing /line numbers i
- Component /Ites number (i.e., welds, etc.)
- Q status ("Q" or "Non-Q" - component is or is not safety related).
- Construction complete or incomplete status (C/I).
t Although the Welding Engineering Component Master Report is not a design document (i.e., no construction work is performed from it) and is not i
stamped " CONTROLLED", data entry is operationally controlled. Each operator who inputs to the report is assigned a unique " PASSWORD" which a
is required for entry into the system. The assigned " PASSWORD" and its i'
saintenance is the responsibility of the Project Management Control System (PMCS). Passwords are assigned using the method outlined in the computer manual where their use and restrictions are explained.
The "WEC-C-WE-REPORT" includes approximately 66,184 safety related l
site-made velds performed on large and small bore pipe, and instrument tubing / piping. The amount of small bore piping and instrument j
tubing / piping site-made welds is approximately 70% of the total weld population (between 40,000 to 50,000 welds). Since no other list of site-made welds exists which contains only small bore welds, this J
I combined report was used as the basis for the Population Items List.
Samples will be randomly selected for both the Small Bore Piping and Instrument Tubing / Piping Welds / Material population, and the Large Bore Pipe Welds / Material population from the same "WEC-C-WE-REPORT" until a representative sample of sixty (60) is obtained for each population. Any L
large bore weld chosen from the population will be rejected as a valid sample of the Small Bore Piping and Instrument Tubing / Piping Welds / Material
)
population and a new sample selected.
l GPP-005.3B, Revision 0
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COMANCHE PEAK RESPONSE TEAM POPULATION ITEMS LIST 88*
0 POPULATION NAME:SMALL BORE PIPING AND INSTRUMENT TUBING / PIPING WELDS / MATERIAL PREPARED BY:
,/msh- //[ /dW/wd RESPONSIBLE QA/QC SUPPORT ENGINEER DATE: September 13, 1985 BASIS FOR ACCEPTING THE LIST: (Cont'd)
The following sources were used in reviewing and accepting the Population Items List ("WEC-C-WE-REPORT"):
1.
Unit 1 ASME III N-5 Data Report Indexes, issue date 10-12-84.
Completed indexes do not exist for Unit 2 as ASME III N-5 Data Reports are not yet complete.
2.
Brown & Root Piping Isometric Drawings (BRPs).
3.
Brown & Root Weld Data Cards (WDCs).
4.
Welding Engineering Component Master Report.
5.
Reactor Containment Penetration and Detail Drawings, (BRPs), and Field Sketch Instrumentation Drawings (FSIs).
The following provides a description of the reviews made using the above sources to establish the validity of the Population Items List:
1.
Unit 1 ASME III N-5 Data Report Indexes The ASME III N-5 Data Report Indexes for Unit I were developed by a B&R QA/QC Team. These indexes tabulate the information in the ASME III required N-5 Data Report.
Each index is put together based on a review of actual piping system data packages; therefore, it is independent of the Welding Engineering Component Master Report.
These indexes include, but are not limited to, items such as piping isometric drawing numbers, support numbers, site-made welds, valves, piping attachments, etc. An ASME III N-5 Data Report Index is not a
" controlled" document, but since it is used in conjunction with a i
report required to satisfy ASME III code requirements, it is a viable source for checking ASME III site-made welds against the "WEC-C-WE-REPORT".
A sample comparison was performed between site-made welds listed on the ASME III N-5 Data Report Index for the Unit 1 Auxiliary Feed Water System and the "WEC-C-WE-REPORT".
All site-made welds (total of 591) shown on the ASME III N-5 Data Report Index were verified to be on the "WEC-C-WE-REPORT".
(See Attachment A for verification data).
CPP-005438, Revision;0 e
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COMANCHE PEAK RESPONSE TEAM POPULATION ITEMS LIST Page 4 of 6 i
t POPULATION NAME:SMALL BORE PIPING AND INSTRUMENT TUBING / PIPING WELDS / MATERIAL L
PREPARED BY:
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RESPONSIBLE QA/QC SUPPORT ENGINEER DATE: September 13, 1985 BASIS POR ACCEPTING THE LIST (Cont'd)
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2.
Brown & Root Pipina Isometric Drawinas (BRPs) a.
A review of all 26 Unit 1 B&R Piping Isometries (BRPs) for the Residual Heat Removal (RHR) System was performed. All welds shown on the isometries (total of 526 welds) were verified to be on the "WEC-C-WE-REPORT".
(See Attachment B for verification data).
b.
A review of 26 randomly selected B&R Piping Isometrics (BRPs) from several systems for Unit 2 was performed and all welds shown on the isometrics (total of 534) were verified to be on the "WEC-C-WE-REPORT".
(See Attachment C for verification data).
1 3.
Brown & Root Weld Data Cards (WDCs) a.
A review of a total of 673 Weld Data Cards (WDCs) from several systems for Unit 2 instrument piping welds (Field Sketch Instrumentation Drawings Nos. FSI-2106, 2107, 2108 series) was performed. All welds defined were verified to be on the "WEC-C-WE-REPORT".
(see Attachment D for verification data).
}
b.
A review of a total of 226 WDCs for the Unit 1 NSS Systems instrument tubing welds (FSI-500) was performed. All welds were verified to be on the "WEC-C-WE-REPORT".
(see Attachment E for verification data).
4.
Weldina Engineerina Component Master Report A review of the construction completion (C/I) status of the g
Welding Engineering Component Master Report revealed that most of the Diesel Generators (Units 1 and 2) piping site-made welds had not been assigned a complete / incomplete status under the C/I column. These welds were added to the sorted "WEC-C-WE-REPORT" to complete the Population Items List regardless of their C/I status.
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COMANCHE PEAK RESPONSE TEAM POPULATION ITEMS LIST Page 5 of 6 j
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POPULATION NAME:SMALL BORE PIPING AND INSTRUMENT TUBING / PIPING WELDS / MATERIAL i
PREPARED BY:
dwm k /Aph RESPONSIBLE /QA/QC SUPPORT ENGINEER DATE:
September 13, 1985 l
1 i
l BASIS POR ACCEPTING THE LIST (Cont'd) l I
5.
Reactor Containment Penetration and Detail & Field Sketch Instrumentation Drawinas A review of the Reactor Containment Penetration and Detail drawings (for Units 1 and 2) revealed that B&R site-made welds i.
(total of 34 Sas11 Bore Welds, Attachment G) associated with Unit 1 Control Pressure Transmitter (PT-934 through 939/IS0s
}
FSI-1-133-01 and FSI l-133-02) Tubing penetrating the containment were not included in the "WEC-C-WE-REPORT".
In i
discussions held with members of the PFG, it was determined that i
the welding engineering PFG does not track these welds on the 1
Welding Engineering Component Master Report, because these welds j
are considered as part of the building turnover, the containment i
structure, and part of the leak rate testing.
1 l
It should be noted that these 54 welds were found to be missing from the "WEC-C-WE-REPORT" after the required 60 samples for
[
Small Bore had been selected.
I i
In order to include these missing welds in the population in an j
un-biased manner and still be able to maintain the samples previously selected, a method was developed (see memo from Fred Webster and John Schauf. Attachment F) which will allow for the i
selection of additional random samples in the same proportion of the total population as the 60 previously selected.
The steps taken to include these welds were as follows:
I
.i The number of additional Small Bore random samples required was i
calculated by taking the total number of samples (60) and i
dividing it by the approximate number of Small Bore Welds (70%
j of the welds in the total population: 66,184). This value was then muid plied by the total number of missing Small Bore Welds (34). As a result, 0.05 welds, or one, sample weld was determined to be proportionally adequate.
Numerically = [60/(0.7 x 66,184)] x 34 = 0.05 g
CONCLUSION Based on the review outlined in items 1 through 5 above, it is I
concluded that the "WEC-C-WE-REPORT" (a sort of the Welding
!l Engineering Component Master Report), in conjunction with the i
5 GFF-005.35 Revie1on 0 4
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i COMANCHE PEAK RESPONSE TEAM POPULATION ITEMS LIST Page,6 of 6
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POPULATION NAME:SMALL BORE PIPING AND INSTRUMENT TUBING / PIPING WELDS / MATERIAL PREPARED BY:
-[d,tMet dd,[M RESPONSIBLE'QA/QC SUPPORT ENGINEER DATE: September 13, 1985 l
CONCLUSION (Cont'd) addition of welds for the Diesel Generators and the Control Pressure Transmitters, is a viable final Population Items List from which i
gn-biased random samples can be obtained.
The above checks were not performed uniformly for both Unit I and Unit 2; however, confidence in the use of the Population Items List is obtained because the same types of activities and procedures were used to input data to the Welding Engineering Component Master Report, regardless of the unit involved.
As weld samples are selected, a QC acceptance verification will be performed and any site-made welds that are not "QC accepted" will be removed from the selected Item List and another sample selected.
BASIS FOR ACCEPTING ANY ADDITIONAL ITEMS:
No other items are accepted.
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Page 1 of 1
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I COMANCHE PEAK RESPONSE TEAM I
POPULATION ITEMS LIST LIST OF PIPING "Q" (SAFETY RELATED) WELDS i
VERIFIED ON THE "WEC-C-WE-REPORT" (POPULATION ITEMS LIST)
DOCUMENT USED: ASME III (N-5) Data Report Index 1
j SYSTEM: Auxiliary Feedwater System. Unit 1 I
)
NO. WELDS WEC-C-WE-REPORT *
{
BRP DWG. NO.
VERIFIED REF. PAGE. NO.
4 AF-1-SB-001 56 08-12 AF-1-SB-002 6
13 AF-1-SB-003 55 14-18 AF-1-SB-004 15 19-20 AF-1-SB-005 16 20-21 AF-1-SB-006 39 21-25
?
AF-1-SB-007 29 25-28 l
AF-1-SB-008 40 28-31 AF-1-SB-008A 30 31-34 AF-1-SB-009 26 34-36 AF-1-SB-010 34 36-39 AF-1-SB-010A 32 40-42 l
AF-1-SB-011 4
42-43 i
AF-1-SB-012 12 45-46 l
AF-1-SB-013 27 46-48 AF-1-SB-014 55 48-53 AF-1-SB-015 38 53-57 j
AF-t-SB-016 38 57-60 AF-1-SB-017 39 60-64 Total Number of Welds 591 I}
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- "WEC-C-WE-RE? ORT" issue date 6/12/85.
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0071-5 POPDES
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'I Att:chment B Page 1 of 1 COMANCHE PEAK RESPONSE TEAM POPULATION ITEMS LIST LIST OF PIPING "Q" WELDS VERIFIED ON THE "WEC-C-WE-REPORT" (POPULATION ITEMS LIST)
- DOCI) MENT USED: B&R Isometric Drawings (BRPs)
SYSTEM: Residual Heat Removal System Unit 1 NO. WELDS WEC-C-WE-REPORT
- BRP DWG. NO.
VERIFIED REF. PAGE. NO.
RH-1-RB-001 18 Rev. 18 4953-4954 RH-1-RB-002 17 Rev. 15 4954-4955 RH-1-RB-003 33 Rev.
8 4955-4958 RH-1-RB-004 20 Rev. 6 4959-4960 RH-1-SB-001 41 Rev. 12 4960-4964 RH-1-SB-002 8
Rev. 8 4964-4965 RH-1-SB-003 33 Rev. 16 4965-4968 RN-1-SB-004 8
Rev. 8 4968-4969 RH-1-SB-005 17 Rev. CP-1 4969-4970 RN-1-SB-006 19 Rev. 15 4970-4972 RH-1-SB-007 22 Rev. 15 4972-4974 RN-1-SB-008 14 Rev. 11 4974-4975 RH-1-SB-009 22 Rev. 14 4975-4977 RH-1-SB-010 8
Rev.
9 4977-4978 RH-1-SB-011 34 Rev. 10 4978-4981 RH-1-SB-012 24 Rev. 8 4981-4983 RH-1-SB-013 17 Rev. 15 4983-4985 RH-1-SB-014 18 Rev. 15 4985-4986 RH-1-SB-015 19 Rev. 14 4986-4988 i
RH-1-SB-016 13 Rev. 10 4988-4989 l
RH-1-SB-017 23 Rev. 10 4990-4992 1
RH-1-SB-018 27 Rev. 16 4992-4994 I
RH-1-SB-019 21 Rev. 11 4994-4996 RH-1-SB-020 14 Rev. 7 4996-4997 RH-1-SB-021 17 Rev.
5 4997-4999 RH-1-SB-022
_1_9 Rev.
7 4999-5001 Total Number of Welds 526
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- "WEC-C-WE-REPORT", issue date 6/12/85.
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Attcchment C Page 1 of 1 L
COMANCHE PEAK RESPONSE TEAM POPULATION ITEMS LIST i
3 LIST OF PIPING "Q" WELDS VERIFIED ON THE "WEC-C-WE-REPORT" (POPULATION ITEMS LIST) l DOCUMENT USED: B&R Isometric Drawings (BRPs)
SYSTEM: iieveralSystems, Unit 2 i
System NO. WELDS WEC-C-WE-REPORT
- l (Isometric Dws. System Code)
BRP DWG. NO.
VERIFIED REF. PAGE NO.
AF-2-SB-030A Rev. 6 18 186 - 188 i
AF-2-SB-0308 Rev. 4 21 188 - 190 AF-2-SB-055A Rev. 1 12 221 - 222 AF-2-SB-064 Rev. 6 27 241 - 243
)
Boron Recycle (BR)
BR-2-SB-001 Rev. 6 36 241 - 281 g
BR-2-SB-018 Rev. 0 6
301 i
Compressed Air (CA)
CA-2-RB-007 Rev. 4 6
418
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CA-2-SB-041 Rev. 5 14 420 l
l Component Cooling Water (CC) CC-2-AB-055 Rev. 3 12 985 - 986 CC-2-RB-021A Rev. I 10 1057 - 1058 I
Chilled Water (CH)
CH-2-AB-010 Rev. 4 62 1711 - 1716 CH-2-EC-0025 Rev. 5 39 1758 - 1762 Chemical and Volume CS-2-AB-005 Rev. 5 15 2423 - 2424 i
Control (CS)
CS-2-SB-050 Rev. 1 20 2733 - 2785 4
CT-2-RB-020 Rev. 3 5
3231 h
CT-2-SB-046 Rev. 3 29 3383 - 3386 f
Domin and Reactor DD-2-AB-007 Rev. 6 22 3497 - 3499 Make-up/Wer. (DD)
DD-2-SB-033 Rev. 3 11 3511 - 3512 Diesel Generator D0-2-DG-012 Rev. 4 14 3654 - 3656 Fuel Oil (DO)
DO-2-DG-042 Rev. 3 56 3700 - 3705 l
Fire Protection (FP)
FP-2-RB-001 Rev. 0 9
3750 - 3751 p
FF-2-55-vol Rev. 2 5
3751 o
Steam Generator FW-2-RB-007 Rev. 2 7'
FW-2-SB-029 Rev. 4 39 4247 - 4250 Waste Process Gas (CH)
CH-2-AB-001 Rev. 4 32 4283 - 4286 GH-2-SB-004 Rev. 2 7
4291 - 4292 i
k TOTAL NUMBER OF WELDS 534 I
j
- "WEC-C-WR-RIPORT" issue date 6/12/85.
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POPULATION ITEMS LIST LIST OF INSTRUMENT PIPING "Q" WELDS VERIFIED ON THE "WEC-C-WE-REPORT" (POPULATION ITEMS LIST) 4 j
DOCUMENT USED 54R Weld Data Cards (WDCs)
I SYSTEM: j everal Systems, Unit 2 s
NO. WELDS WEC-C-WE-REPORT
- Svetess FSI DWG. NO.
VERIFIED REF. PAGE. NO.
Component FSI-2-2106-14-01-1Q3 46 3990-3994 Cooling FSI-2-2106-14-02-1Q3 46 3994-3998 Water (CC) FSI-2-2106-15-01-2Q3 40 3999-4002 FSI-2-2106-15-02-2Q3 42 4002-4006 Chilled FSI-2-2106-16-01-2Q3 28 4006-4008 Water (CH) FSI-2-2106-16-02-2Q3 39 4009-4012 I
Containment FSI-2-2106-2-01-l'Q2 18 4012-4014 j
Spray (CT) FSI-2-2106-2-02-1Q2 18 4014-4015 FSI-2-2106-2-03-1Q2 21 4015-4017 FSI-2-2106-2-04-1Q2 20 4017-4019 Safety FSI-2-2107-01-A-01-1Q2 43 4019-4023 Injection FSI-2-2107-01-A-02-1Q2 44 4023-4027 (SI)
FSI-2-2107-01-B-02-1Q2 41 4027-4031 FSI-2-2107-01-C-01-1Q2 41 4031-4034 FSI-2-2107-01-C-02-1Q2 43 4034-4038 FSI-2-2107-01-D-01-1Q3 41 4038-4042 I
Main FSI-2-2108-01-01-1Q2 20 4045-4047 Steam FSI-2-2108-01-02-1A2 22 4047-4049 i
(MS)
FSI-2-2108-01-03-1A2 22 4049-4051 FSI-2-2108 01-04-1Q2 20 4051-4053 l
FSI-2-2108-01-05-1Q3 J8 4053-4055 TOTAL NUMBER OF WEDS 673
- "WEC-C-WE-REPORT", issue date 6/12/85.
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Attcchment E j
Page 1 of 1 i
COMANCHE PEAK RESPONSE TEAM POPULATION ITEMS LIST I
LIST OF INSTRUMENT TUBING "Q" WELDS I
VERIFIED ON THE "WEC-C-WE-REPORT" (POPULATION ITEMS LIST) i
)
DOCUMENT USED: B&R Weld Data Cards (WDCs)
SYSTEMS:.NSS Systems, Unit 1 NO. WELDS WEC-C-WE-REPORT
- Systema FSI DWG. NO.
VERIFIED REF. PAGE. NO.
Chemical & Volume Control (CS) FSI-1-500 39 3904-3907 Reactor Coolant (RC)
FSI-1-501 23 3907-3909 Reactor Coolant (RC)
FSI-1-502 13 3909-3910 Reactor Coolant (RC)
FSI-1-503 13 3910-3912 Reactor Coolant (RC)
FSI-1-504 11 3912-3913 Reactor Coolant (RC)
FSI-1-505 38 3913-3916 Main Steam (MS)
FSI-1-506 29 3916-3919 Main Steam (MS)
FSI-1-506-01 12 3919-3920 Main Steam (MS)
FSI-1-507 5
3920 Main Steam (MS)
FSI-1-507-01 9
3920-3921 Main Steam (MS)
FSI-1-508 5
3921-3922 Main Steam (MS)
FSI-1-508-01 6
3922 Main Steam (MS)
FSI-1-509 5
3922-3923 Main Steam (MS)
FSI-1-509-01 6
3923 Main Steam (MS)
FSI-1-510 5
3923-3924 Main Steam (MS)
FSI-1-510-01 7
3924 Total Number of Welds 226 k
"WEC-C-WE-REPORT", issue date 6/12/85.
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W suw. eoes estmc MEMORANDUM AMD.IM5TfW MEMT 70BW6 / PnPl%___
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.Whti.LM ATEEI AL TO:
John Schauf FROM:
Fred Webster I
DATE:
August 14, 1985
$UBJECT: Large and Small Bore Piping Welds / Population Items I.ist -
Units 1 & 2.
l QA/QC-RT-336 (memo,. -(w or3) l
Reference:
from John Schauf to Fred Webster, r
dated 08/08/85).
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Based on the information given in your memo, I recommend that you i
randomly sample [60/(0.3 x 66,184)] x 299 = 0.90, (i.e., one) weld from i
che additional 299 large bore welds, and [60/(0.7 x 66,184)] x 37 = 0.05
}
(i.e., one) weld from the additional 37 small bore welds. This will l
give you an approximate proportional sample for both large and small i
bore giping velds.
)
If there are other questions about this, please call me.
3 Fr d Webiter onre (VM/95)
MOTE.* %e x;MnER of possoNG WELDS WA $ cal 6e NA l'Y g
DETERMoMED FRCM A PRIsIMINARY MfVoEN.
AFTER THos MEMD HAD BEfN ISSUED, A DCTAltEL yyj,7 M6 VoEW IffVEAl6D TMT THf MTUAL. NUMBEM of MisstNS iAnsi eMt WELDS kAb tunt!4E0 i
CC A PMrwAsad b
pacu 299 go gg2, App rus pert /AL 75eaas NVM6ft of MISStU6 SMALL gott WELDS
- b. Boo cre d KAc Re C &C HAD cuADe>EB FMDM ST) -TO M.14 E R6COMNEMbED SAMrtE stad uAs N01~
cuAM66.D ( As Sa06.gfDb W) AND TH6 MCA50Got4 of skt MEMO gegAlcS Uyt9A96l?b.
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- [60/(0.3 x 66,td4)) x 262: 0.95 (i.e.,ase)
MttoNNtM>tD A00lTICNAL AAggt B006 fnN962.
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-[(60/Mk 6 bel 840 x 34: 0.04. (s,e., ant) l C
netsNutunen Asamosat sun ggs[e
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- IVAWATICN WESEAWCN POPOLAil0M I TEMS MSTp/yguMENT F CCEPCWATION SMUL 80tf Pl#/M AND ZNS'TgakELIT mJ6eM }nftM
_%Elb5 / M ATEKIAL
,0A/QC-RT-336 i
TO:
Fred Webster M*I A CI S i
FROM:
John Schauf f
DATE:
August 8, 1985 i
SUBJECT:
. Large and Small Bore Piping Welds / Population Items List
- , Comanche Peak Steam Electric Station Units 1 and 2 As discussed in our telephone conversation of August 7,1985, af ter performing
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the random sample selections and with the accessibility checks in progress for the subject populations, it was discovered that approximately 299 large bore containment penetration welds (joining the flued head forgings / weld neck flanges to the penetrations sleeves) and 37 small bore tubing welds associated with the reactor containment (Control Pressure transmitters) were not included in the population list.
4 Presently the total population of site made welds includes 66,184 Large and Small Bore Piping / Instrument Piping / Tubing welds. The distribution (percentile) of Large Bore Welds versus Small Bore (Tubing, Piping) welds is approximately 30% (Large Bore) to 70%(Small Bore Piping Tubing).
The purpose of this memo is to request your assistance in resolving this matter, that is; to provide a method to include these missing welds in our sample process in an un-biased manner and still be able to maintain the 60(Large Bore) and 60(Small Bore) random samples previously selected.
Your response to this question is requested by 8/14/85.
Should you have any questions, please do not hesitate to call me at ext 772.
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JJ S uf QA/Q ead Mechanical Engineer s
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Att:chment G
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Page 1 of 1 CONANCHE PEAK RESPONSE TEAM POPULATION ITEMS LIST I
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LIST OF CONTROL PRESSURE TRANSMITTER'S TUBING "Q" WELDS NOT INCLUDED ON THE "WEC-C-WE-REPORT" (POPULATION ITEMS LIST) i DOCUMENT USED: Reactor Containment Penetration and Detail Drawings, BRPs and Field Sketch Instrumentation Drawings (FSIs)
SYSTEMS: heactor Containment Control Pressure Transmitters FSI DWG. NO.
FIELD WELD PENETRATION NO.
INSTRUMENT NO.
l FSI-1-133-01 FW-1 M-IV-7 1-PT-937 & 938 FSI-1-133-01
-2 M-IV-7 1-PT-937 & 938 L
FSI-1-133-01
-3 M-IV-7 1-PT-937 & 938 FSI-1-133-01
-4 M-IV-7 1-PT-937 & 938 FSI-1-133-01
-5 M-IV-7 1-PT-937 & 938 FSI-1-133-01
-6 M-IV-7 1-PT-937 & 938 FSI-1-133-01
-7 M-IV-7 1-PT-937 & 938 FSI-1-133-01
-8 M-IV-7 1-PT-937 & 938 FSI-1-133-01
-9 M-IV-7 1-PT-937 & 938 FSI-1-133-01
-19 M-IV-8 1-PT-936 & 939 FSI-1-133-01
-20 M-IV-8 1-PT-936 & 939 FSI-1-133-01
-21 M-IV-8 1-PT-936 & 939 i
FSI-1-133-01 FW-22 M-IV-8 1-PT-936 & 939 l
FSI-1-133-01
-14 M-IV-8 1-PT-936 & 939 FSI-1-133-01
-15 M-IV-8 1-PT-936 & 939 l
FSI-1-133-01
-16 M-IV-8 1-PT-936 & 939 1
FSI-1-133-01
-17 M-IV-8 1-PT-936 & 939 FSI-1-133-01
-18 M-IV-8 1-PT-936 & 939 e
E FSI-1-133-02 FW-1 M-IV-10 1-PT-934 FSI-1-133-02
-2 M-IV-10 1-PT-934 i
FSI-1-133-02
-3 M-IV-10 1-PT-934
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FSI-1-133-02
-4A M-IV-10 1-PT-934 FSI-1-133-02
-5 M-IV-10 1-PT-934 FSI,1-133-02
-6 M-IV-10 1-PT-934 FSI-1-133-02
-7 M-IV-10 1-PT-934 FSI-1-133-02
-8 M-IV-10 1-PT-934 FSI-1-133-02
-20 M-IV-9 1-PT-935
$I FSI-1-133-02
-21 M-IV-9 1-PT-935 FSI-1-133-02
-22 M-IV-9 1-PT-935 FSI-1-133-02
-12 M-IV-9 1-PT-935 s
FSI 8-133-02 M-IV-9 1-PT-935 FSI-S.-133-02 M-IV-9 1-PT-935
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FSI-1-133-02
-13 M-IV-9 1-PT-935 F
FSI-1-133-02
-14 M-IV-9 1-PT-935 FSI-1-133-02
-15 M-IV-9 1-PT-935 FSI-1-133-02
-16 M-IV-9 1-PT-935 TOTAL NUMBER OF WELDS 34 A
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,7 SUBJ: Document Transmittal
,The following documents are attached:
s Population Items List - Mechanical Equip ent Installation Approval Date - 9/16/85 Attachment not distributed - Available in Records Management (EQP-MEI-REPORT) t t
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