ML20126E481

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Forwards Addl Info Requested Re NRC Bulletin 88-005,Suppls 1 & 2 Concerning Nonconforming Matls Supplied by Piping Supplies,Inc at Folsom,Nj & West Jersey Mfg Co at Williamstown,Nj
ML20126E481
Person / Time
Site: Comanche Peak Luminant icon.png
Issue date: 12/22/1992
From: William Cahill, John Marshall
TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC)
To:
NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM)
References
IEB-88-005, IEB-88-5, TXX-92631, NUDOCS 9212290154
Download: ML20126E481 (19)
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Text

{{#Wiki_filter:.. e E'i " J Log # TXX-92631 File # 10119 L j Ref, # NRCD 88-05: Supp2 _r = TUELECTRIC oecemuer 22, 1992 h illiartl j, Calilll, Jr. to1 up Vu e l'*rs&nt U. S. Nuclear Regulatory Commission Attn: Document Control Desk Washington, DC 20555

SUBJECT:

COMANCHE PEAK STEAM ELECTRIC STAT 10ft (CPSES) DOCKET NO. 50-446 RE0 VEST FOR ADDITIONAL INFORMATION - NRC BULLETIN 88-05 AND SUPPLEMENTS 1 AND 2: NONCONFORMING MATERIALS SUPPLIED BY PIPING SUPPLIES, INC. AT FOLSOM, NEW JERSEY AND WEST JERSEY HANVfACTURING CO. AT WILLIAMSTOWN NEW JERSEY REF: 10 Electric letter f rom William J. Cahill, Jr. to U. S. NRC dated September 18, 1992, logged TXX 92450 Gentlemen: The referenced letter provided additional information based on the results of location, identification and testing of WJM/ PSI flanges installed in Unit 2 safety related systems. Based on the review of the referenced letter, the NRC requested additional information. The attachment to this letter provides that additional information. Sincerely, William J, Cahill, Jr. By: J. S. Marshall Generic Licensing Manager MCP/fds Attachments c - Mr. J. L. Hilhoan, Region IV Resident inspectors, CPSES (2) fir. B. E. Holian, NRR

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I Attachment to TXX-92631 Page 1 of 4 1) TV Electric's Report ER ME-18 (ref. 2) and letter dated January 11, 1989 (ref. 3), states that 'of the 466 WJM/ PSI flanges received at CPSES, 138 were found in site warehouses. 102 were verified to be installed in Unit I safety related systems, and the remaining 226 are either installed in Unit 2, scrapped or installed in Unit I non safety i systems.' The reference 1 letter from TV Electric states that 'A review I of piping records determined that 83 potentially deficient flanges had been installed in Unit 2 safety related systems.' In order to evaluate -{ the applicant's identification and location efforts, describe how the 83 j flanges installed in Unit 2 were identified and located from among the 226 remaining flanges cited in references 2 and 3. CPSES Resnonse The Unit 2 flanges were identified and located by using the N-5 data packages and the Unit 2 Material Takenff Database. 1he total number of flanges installed in Unit 2 safety-related systems is 84 and the number-with a high hardness reading is eight. 2) In order to evaluate the applicant's structural analyses and 'use as+ is' disposition of the 22 flanges with low hardness readings, provide a table similar to that contained in reference 5 which'provided a summary of the engineering evaluations for each of the low hardness flanges installed in Unit 1. [PSES Response Table 1 (attached) summarizes the engineering evaluations for each of the low hardness flanges installed in Unit.2. The approach of utilizing hardness testing as a means of accepting the subject flanges is addressed in the NUMARC Generic Testing Program created in response to IEB 88 05. Each flange condition has been evaluated using the equation P, ( 5 ) ........ (Ref: ANSI B16.5 Annex D) P 7 3 8750 and the working pressure has been found. acceptable for the specified design conditions. The pipe stresses have been reviewed and found to be within allowable limits by individual stress calculations which show flange leads to be acceptable when considering the reduction in the flange allowables due to the hardness-test results. Each flange was vibro etched with a statement that the flange is to be used only in the specific application (by BRP and item number) in which it is currently installed. The respective BRP drawing was revised with~ the same statement for each affected flange. I

l - 1 i 1 Attachment to TXX-92631 Page 2 of 4 3) The reference 3 letter states that, for Unit 1, TV Electric used the NUMARC/Bechtel Generic Testing Program report to evaluate flanges with high hardness values and that 'Weldability and brittle fracture are the principal concerns affected by high hardness.' The reference 3 letter evaluated these concerns for Unit 1 and concluded that 'high hardness values in the range found during the testing of WJH/ PSI material at CPSES are not a concern.' In order to evaluate-the applicant's methodology and 'use-as is* disposition of -the 10 flanges with high hardness values, provide a description of the methodology used. Provide a list of the high hardness readings and their converted UTS values. How do these compare with the high hardness values found in the Unit 1 flanges? [PSES Response Table 2 (attached) provides a list of the high hardness values and their converted UTS values. In Unit 1, there were twenty high readings with 231 BHN as a maximum. Table 2 reflects the eight Unit 2 high readings -with 238 BHN as a maximum. Weldability and brittle fracture are the principal concerns affected by high hardness. With the assumption that the final hardness test results reflect the actual hardness for these flanges, weldability was shown to be acceptable based on an acceptable visual and/or nondestructive examination of the installation weld, an-acceptable hydrostatic test and the flange sustaining bolt-up loads. ;The CPSES. operating temperatures relative to the locations of these flanges are high enough that brittle fracture is not a concern, Also, other recognized Codes and_ Standards, such as AWS D1.1, allow hardness values as high as 265 BHN for fabricated, welded and installed items. The high hardness readings found in Unit 2 were between 191 and 238 BHN. Therefore, high hardness values found during the testing of WJH/ PSI material at CPSES Unit 2 are not a concern. 4) ' Reference 2, 3, and 4. Indicate.that flangessof three (3) different materials (SA105 SA350 LF2 and SA182 F304) were received, flange sizes ranged-from 1/2" to 24*: pressure ratings range from 150_1b to 2500 lb, In order to determine that the applicant's evaluations considered the correct parameters, provide a list of the 83 deficient flanges installed in Unit 2 safety-related systems, indicating the. insite hardness and i converted UTS, material, size, design pressure / temperature, and the unique identifiers. Describe how the flange materials were determined, Identify the 22 flanges with low hardness values and the 10 flanges with-high hardness values, r t ._.,...4

. ~. - - - - - - _. ~.. - ~ -. - - Attachment to TXX-92631 Page 3 of 4 CPSES Response Table 3 (attached) provides the requested information. The chemical composition of the heats of material which exhibited low hardness readings t!as determined by laboratory analysis (refer to Table 4). i The NRC further requested that CPSES conduct a hardness test again on the lowest reading flange f rom heats 86861 B3281, 00, J69D and T1404G. Two more sets of hardness readings were taken and the results are provided in Table 3A. + 5) In order to evaluate the accuracy of the analyzing equipment used to perform the chemical analysis listed in reference 1 for Heats DD, J69D. t T1404G, 86861, H551701, and B3281, describe: a. How were the samples secured and f rom what location of the - 1 flanges? b. How were the samples prepared for analyses and how were contaminates controlled? c. What standards were used to check the accuracy of the analyzing equipment, were they traceable to the National Institute of Standards and Technology (NIST). and when were the checks-performed? CPSES-Response CPSES has now submitted the three additional heats (DD, J690, and T1404G) from Unit 2 to a commercial laboratory for chemical analysis. Therefore, we believe this question is no longer germane. It should be _noted that according to the lab report' (results presented in Table 4), the manganese content in heat T1404G was 0.58%, which is-0.021 below the range of manganese forjSA-105 (0.60% - 1.05%). _ Manganese is present in commercial steels to deoxidize the melt and _ facilitate hot working of-the steel. It issaiso added to improve machinability and hardgnability of the steel. The lower manganese content f or heat T1404G corresponds: to the low hardness readings of _ some of-the flanges f rom this-heat. In each-of-these-cases, the-reduced-hardness and corresponding tensile-strength was-accepted by-analysis (refer to Response 2). Therefore, the minor reduction _in manganese content'does. not affect the. flanges in their installed _ locations. 6)l In order to evaiuate the accuracy of the chemical results.Llist; d. the silicon; values.for'each heat. e. - the yield and ultimate strength values shown on the Certified: Material Test Reports (CMTRs). L p P DP N--grv7-g-tyhi-31-y-he we $

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i i Attachment to-TXX 92631 Page 4 of 4 i f. the hardness values along with flange identification, g. the chemical analysis along with flange identification,- CPSES ResDonse Table 4 (attached) provides the requested information, 7) In order to identify potentially deficient flan 9es that are identified-with valid heat numbers, show a histogram of observed frequency versus hardness values for each heat. Additional chemistry may be required for each identified population, CPSCS ResDonse Table 5 (attached) provides the requested information. Note that the three flanges annotated *XX' were scrapped and hardness readings are not available. References listed _in the RAI:

1) 10 Electric letter to NRC, Response to NRC. Bulletin 88 05 for CPSES Unit 2 logged TXX 92450 September 24, 1992.
2) TV Electric Engineering Report ER-ME-18 CPSES, NRC Bulletin 88 05, Rev, 0, October 10, 1988.

3) TU' Electric letter to NRc, Response to NRC Bulletin-88-05 for ~ ' CPSES Unit 1, logged TXX-89005, January 11, 1989. 4)- TU Electric letter to NRC, Response to'NRc Bulletin 88 05 for CPSES Unit 1, logged TXX-89163, March _31,.1989. - 5) TU Electric letter to NRC, Response to NRC Bulletin 88 05 for CPSES Unit 1.-logged TXX 90039, January 26, 1990, - 1 i' i e au----gry r giv-m v-e g 4 m a- -wy-26 - ~ r-su. mgause se v+e wme e =*s.vea .psy eese .,.er ,et,-e* =w +pa+v- 'vs-# 4 -h L$i-P M

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1 1 - 1 1/ A A 0E A 6FA "6 F A " /A 1 A FNT 1RS /A /A 1 RS 31 S "31 S "31 S 31S l I S RS 1 1 1 I = 13 f. 6 8 4 s 29 4 n . X C n I _ X r 4 1 3 1 ' 1 1 1 v T e 1 5 s i N N N N o4 f T n T n CI' 4 1 2 3 e _ t1 .i T T i M I F F 0 0 0 0 t I _ tf n _ oo e 4 2 4 2 R R R R e d O 0 0 O . 0 A A A A I T T T T r0 G G G B b A-A A A i.1 I I F .F F E E F _ a2 g 4 N 8 N g 1 N r 2 2 2 2 2 . tm i m 2 7' 2 2 t W W W T P AP F S S S Q T T-0 ( C C l ' f ;' ii i! i i j1 i ;* i

Attactosnt to T)0(.92631 Page 11 of 14 T/RE 3A Flange / Material Design Heat Hi/ Insitu Converted Flange Identifier Type P/T No. 14 Haniness LTS AF-2-SB-63A-3Q3 PC# 11 4" 1500# 1800/150 86861 L 125,5 71127 137 RM 132 SA-105 FW-2-SB-27-3Q2 PC #21 3" 15006 1800/500 B3281 L 117 67629 137 RM 148 SA-350 LF2 SW-2-DG-01 ITT-3 Fin #4 10" 150s 150/170 DD L 127. 71816 153.5 RM 141 SA-105 CP2-MEATAR-03 N-4 1" 300# 300/150 J69D L 128 72214 187 1/16 RE90 199 SA-105 SW-2-DG-01 ITT-4 F14 #6 10" 1508 150/170 T14040 L 121 69166-147.5 RFW 145 SA-105 l i s l W J e-

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Att &lrent to. TXX-92631 Pay 3 13 ct 14 TA"LE 5 IEB 88-05 RAI QUESTION 7 TABULAR HISTOGRAM SHOWING 11 ARDN ESS vs. HEAT lii / Insitu Heat a Lo lia rd n e s s XX 433 11 205 4570 OK 141 4570 OK 141 4570 OK 145 4570 OK 151 4570 OK 161 6011375 OK 173 75 OK 147 75 OK 149 75 OK 153.5 75 OK 158 75 OK 159 75 0); 165 86861 L 125.5 86861 L 128.5 86861 L 130,5 p 86861 OK 137 86861 OK 141 86861 OK 142 I 86861 OK 148 86861 OK 153.7 BG861 OK 164.5 ) 9321 OK 159.5 A41234 OK 159 A79 H 209 A79 H 222 B3281 L 117 B3281 L 126 B3281 L 130 B3281 L 130 B3281 L 130 B3281 L 138 B3281 L 142 B3281 L 144 B3701 XX B3701 XX BST OK 171 RST OK 177 BST H 207 BST H 238

Attrinmt to TXX-92631 Paje 14 of 16 TRLE 5 IEB 88-05 HAI QUESTION 7 TABULAR HISTOGRAM SliOWING !! AR DN ES S vs. IlEAT Hi/ Insitu llent # Lo lia rd n e s s DD L 127 DD L 130.5 DD OK 160 DD OK 166 E1413 OK 154.5 E1413 OK 158 GDAX OK 149.5 GDAX OK 171.5 GDKW OK 159.5 GDKW OK 164 GDKW OK 164.5 GGR OK 147 GGR OK 147 J69D L 128 J69D OK 148 J69D OK 162 J69D OK 163 ) JG9D OK 164 JG9D H 191 J69D li 194 ) J69D 11 199 M551701 L 126 M551701 L 126 ) M551701 L 127 M551701 L 136 M551701 OK 139 M551701 OK 143.5 M551701 OK 181 T1404G L 121 T1404G L 127 T1404G L 133 T14040 L 134 T14040 OK 138 T1404G OK 147 T1404G OK 153.5 T1404G OK 156 T1404G OK 168 T411381 OK 141 l! T411381 OK 159 T4997 OK 150.5 T4997 OK 159 t T4997 OK 163 I T4997 OK 167 1 .}}

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