ML19344E050

Forwards Revised Table 1 to 800103 Response to IE Bulletin 79-17,Revision 1,re Ultrasonically Tested Welds.Revised Table 1 Deletes Data Re Testing of Welds on Pipe Thicknesses Less than 250 Inches

ML19344E050
Person / Time
Site:	Beaver Valley
Issue date:	08/18/1980
From:	Dunn C DUQUESNE LIGHT CO.
To:	Grier B NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION I)
References
IEB-79-17, NUDOCS 8008260555
Download: ML19344E050 (7)

Text

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A b er des M pu) 4ss-sooo Q,Y August 18, 1980 swo United States Nuclear Regulatory Commission Office of Inspection and Enforcement Attn: Boyce H. Grier, Regional Director Region I 631 Park Avenue King of Prussia, Pennsylvania 19406

Reference:

Beaver Valley Power Station, Unit No. 1 Docket No. 50-334, License No. DPR-66 Response to I.E.Bulletin 79-17, Revision 1

Dear Mr. Grier:

In our response to the above referenced bulletin dated January 3, 1980, Table I provided a summary of our inspection program. The summary table pro-vided information as to the number of welds that were ultrasonically (UT) tested. Included in the summary were welds that were UT inspected on pipes with wall thickness less than .250 inches.

Discussions with one of your regional inspectors and our resident inspector on the acceptability of the UT calibration method used for these

, welds have determined that the method used may yield questionable results.

Since these welds were not required to be UT tested by Revision 1 of the l bulletin, we are submitting a revised Table 1 which deletes data on UT of welds on pipe thickness less than .250 inches. The total represi.ntative t sample requirements of the bulletin for accessible welds of pipe thickness

! greater than .250 inches are still satisfied in accordance with our letter of January 3, 1980.

We trust that this response satisfactorily resolves this item. Please contact my office if there are any additional questions. ,

i Very truly yours, h___

C. N.' Uunn l Vice President, Operations l

Attachment ,

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Slb 800825o 5 5 5 Q I

Beaver Valley Power Station, Unit No. 1 -

Docket No. 50-334, License No. DPR-66 Response to I.E.Bulletin 79-17, Revision 1 -

Page 2 cc: Mr. D. A. Beckman, Resident Inspector U.S. Nuclear Regulatory Commission Beaver Valley Power Station Shippingport, Pennsylvania 15077 f U.S. Nuclear Regulatory Commission c/o Document Management Branch Wcshington, D.C. 20555 e

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Tant.E I ,

INSPECTION RESULTS BORATED STAGNANT LINES FOR PIPE DIAHI.TERS > 2 1/2 INCllES Wall No. No. No. No. liigli No. No. In. Ilca t System Tlilck. 1.ine No. Welds Visual P.T. U.T. Rad. Insul Cont. Trace S.I. .120 3"-SI- 35-152W-Q3 23 0 0 0 23 S.I. .134 6"-SI- 40-153W-Q2 59 59 9 0 6"-SI- 44-153W-Q2 65 65 9 0 TOTAL. 147 124 18 0 '

S.I. .148 8"-SI- 2-153W-Q3 68 56 10 0 12 12 8"-SI- 2-153W-Q2 6 6 0 0 TOTAI. 74 56 10 0 12 12 I

S.I. .165 10"-SI- 16-153W-Q2 28 28 7 0 10"-SI- 17-153W-Q2 1 1 1 0 I

10"-SI- 26-153W-Q2 27 27 5 0 10"-SI- 27-153W-Q2 1 1 1 0 i TOTAL. 57 57 14 0 i S.I. .180 12"-St- 1-153ti-Q3 34 14 0 0 20

, S.I. .216 3"-SI- 31-153W-Q3 3 3 0 0 '

3"-SI-145-153W-Q3 24 24 0 0

! TOTAL. 27 27 0 0 i

j S.I. .280 6"-SI- 40-153A-Q2 13 13 1 1 i 6"-SI- 41-153A-Q2 8 8 2 2 6"-SI- 42-153A-Q2 5 5 1 1 26 26 4 4 i

• i e

t .

TAllt.E I INSPECTI0tl RESUll!S BORATED STAGNANT LINES FOR P11'E D14MiffERS > 2 1/2 INCilES (continued) i Wall No. No. No. No. liigle No. No. In. Ileat Systein Thick. Line No. Welds Visual P.T. U.T. Had Insul Cont. Trace S.I. .375 12"-SI- 5-153A-Q2 19 17 0 0 12"-SI- 6-153A-Q2 28 28 0 4 12"-SI- 7-153A-Q2 4 4 12"-SI- 8-153A-Q2 4 4 3 3 ,

12"-SI-108-602 -Q2 4 4  !

12"-SI-110-602 -Q2 4 4 12"-SI-120-602 -Q2 4 4 TOTAL. 67 53 3 7 12 S.I. .438 3"-SI- 56-1503-Q2 5 5 5

3"-SI- 57-1503-Q1 3 3 3"-SI- 57-1503-Q2 1 1

3"-SI- 60-1503-Q2 42 42 42

3"-SI- 81-1503-Q1 72 12 3 57 3 3"-S1- 81-1503-Q2 3 3 l 3"-S I- 130-1503-Q L 26 8 18 t

3"-SI-130-1503-Q2 25 21 4 3"-SI-133-1503-Q2 45 45 15 14 3"-SI-134-1503-Q1 26 7 19 3"-SI-140-1503-Q1 36 21 11 11 15

' 3"-SI-141-1503-Q2 7 7 4"-SI- 75-1503-Q2 16 16 9 8 4"-SI-128-1503-Q2 2 2 2 2 -

TOTAI. 309 139 37 35 4 57 '109 50 e

TABLE I INSPECTION RESULTS IMHATED STACHANT LINES F0lt PIPE DIAMETERS > 2 1/2 INCilES (continued)

Wall No. No. No. ' No. liigh No. No. In. Ileat

System Thick. Line No. Welds Visual P.T. U.T. Rad Insul Cont. Trace S.I. .719 6"-SI- 19-1502-Q1 6 6 6"-SI- 20-1502-Q1 40 40 6"-SI- 29-1502-QL 35 35 6"-SI- 30-1502-Q1 24 24 l 6"-SI- 32-1502-Q1 11 2 2 2 9  ;

6"-SI- 33-1502-Q1 16 7 7 4 9 6"-SI- 34-1502-QL 6 2 -2 2 4 6"-SI- 72-1502-Q1 18 18 6"-SI- 73-1502-Q1 23 23 6"-SI- 74-1502-Q1 29 29 TOTAL 208 11 11 8 197 i

S.I. 1.125 10"-SI- 15-1502-Q1 3 3 3 3 10"-SI- 18-1502-Q1 6 6 - -

10"-SI- 28-1502-QL 5 5 2 1 i

TOTAL 14 14 5 4 l S.I. 1.312 12"-SI-101-1502-QL 25 25 25 l' 12"-SI-111-1502-Q1 24 24 24 12"-SI-121-1502-QI 23 23 23 ,

l TOTAI. 72 72 72 4

C . ll . .435 3"-Cll- 73-1503-Q2 13 13 2 2 3"-Cll- 74-1503-Q2 13 13 1 1 3"-Cll- 75-1503-Q2 13 13 2 2 4"-C11- 76-1503-Q2 9 9 TOTAL 48 48 5 5 4

1

TAlli.E I ,

1 INSI'EL"r10N RESilLTS Il0HATEI) STAGilANT l.thES FOR 1*ll'E 111 AllETERS > 2 1/2 INCilES (continued)

Wall No. No. No. No. liigh No.  ! No. In. Ilent Syutem Thick. Line No. Welds Visual l' .T . U.T. Rad. Insul Cont. Trace e_

R.S. .435 6"-l(S- 29-153n-Q2 19 19 3 3 6"-ItS- 30-15311-Q2 _ 18 18 3 1

, TOTAL. 31 37 6 4

)

Q.S. .120 4"-QS- 5-153n-Q3 5 5 0 0 4"- QS- 6-153n-Q3 7 7 0 0 4"-QS- 34-152 35 19 0 0 16 4"-qS- 35-152 6 6 0 0 TOTAL. 5'l 37 0 0 16 Q.S. .165 10"-QS- 3-153n-Q3 53 53 9 0 10"-QS- 4-153n-Q3 42 42 5 0 TOTAL. 95 95 14 0 Q.S. .180 12"-QS- 1-153n-Q3 27 15 0 0 12 12"-QS- 2-153n-Q3 40 30 0 0 10 67 45 0 0 22 It . II . It . .120 4"-Ril- 25-152 -Q2 25 25 /

1 It . II . it . .134 6"-101- 14-152 -Q2 27 5 5 0 22 It . II . It . .365 10"-101- 4-602 -Q2 9 9 10"-It!!- 5-602 -Q2 10 5 10 1

1 0 " - l(11 602 -Q2  !! 8 8 10"-Illi- 8-602 -42 7 7 7 10"-Itll- 10-602 -Q2 8 8 8 i

10"-l(11- 17-602 -Q2 10 10 10 l 10"-l(11- 19-602 -Q2 _5 5 5 57 43 57

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