ML20006D225
| ML20006D225 | |
| Person / Time | |
|---|---|
| Site: | Comanche Peak  |
| Issue date: | 02/02/1990 |
| From: | William Cahill TEXAS UTILITIES ELECTRIC CO. (TU ELECTRIC) |
| To: | NRC OFFICE OF INFORMATION RESOURCES MANAGEMENT (IRM) |
| References | |
| IEIN-88-005, IEIN-88-5, TXX-90059, NUDOCS 9002120245 | |
| Download: ML20006D225 (6) | |
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Log # TXX 90059 l
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4-File # 10119 i
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g Ref. # NRCB 88-05 j
NELECTRIC i
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February 2, 1990 WHuman 3. Cahul, Jr.
naurn M />nWent I
U. S.. Nuclear Regulatory Commission Attn: Document Control Desk
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.. Washington, D. C.
20555
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SUBJECT:
COMANCHE PEAK STEAM ELECTRIC STATION (CPSES)
DOCKET NOS. 50 445 AND 50 446 l
REQUEST FOR ADDITIONAL INFORMATION ON RESPONSE TO NRC BULLETIN 88 05 AND SUPPLEMENTS 1 AND 2 REF:
- 1) TV Electric letter from Mr. W. J. Cahill, Jr. to i
U. S. NRC dated January 11, 1989. TXX-89005
- 2) TU Electric letter from Mr. W. J. Cahill, Jr. to 1'
U. S. NRC dated March 31, 1989, TXX 89163 3)~TU Electric letter from Mr. W. J. Cahill, Jr. to U. S. NRC date January 26, 1990. TXX-90039 t
Gentlemen:
TV Electric responded to NRC Bulletin 88 05 " Nonconforming Material. Supplied by Piping Supplies, Inc. at Folsom, New Jersey and West Jersey Manufacturing Company at Williamstown, New Jersey" as modified by Supplements 1 and 2, by TXX 89005, dated January 11, 1989 (Reference 1) and TXX 89163, dated March 31, f
1989 (Reference 2).
TV Electric also responded to an NRC request for l;
information on this subject by TXX-90039, dated January 26, 1990 (Reference L.
3).
As committed in TXX-90039. TU Electric has completed the material tests (including chemical tests) of the material heat numbers representing the 12 L
flanges installed in Unit 1. identified as having low hardness test results-l
.(Reference 1).
The applicable heat numbers, material type, pressure rating L
and flange type for these 12 installed flanges as previously provided are:
1.
Heat Number - 342X,12" 150#, RF Blind Flange, SA 105 i
L 2.
Heat Number - M551701, 1 1/2" 300f, RFSO Flange, SA-105 3.
Heat Number - B3701, 2" 900#, RF Blind Flange SA-350 LF2
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The results of the material tests completed by Metallurgical Engineering Services, Inc. are attached and the engineering evaluation thereof is delineated below.
9002120245 900202 1
PDR ADOCK 05000445 Q
PDC d
. P. O. Box 1002 Glen Rose, Texas 76001002 1
1 TXX 90059 February 2, 1990 Page 2 of.3 i
Item 1 - Heat Number 342X This flange does not meet the physical and chemical requirements of SA 105.
This heat number represented one installed flange in Unit 1.
This installed flange was removed and transported to the testing facility for testing and replaced with a ASME acceptable flange.
No material of this heat number is installed in Unit 1 or available in a CPSES warehouse for future installation in Unit 1.
Based on previous stress analysis results (Reference 1) this blind l
flange, considering actual tensile strength of 45,100 pounds per square inch, would have been capable of performing its intended service and design functions.
l Since this material is no longer installed in Unit I no further action is necessary, Item 2 - Heat Number M551701 Item 3 Heat Number B3701 The chemical test results for these heat numbers are satisfactory and the physical test results are slightly low, but are within the magnitude of acceptable variances documented by the AISI Survey published in 1974 (Reference 1).
The attached laboratory test results indicate that the tested material for these heat numbers is the same material as certified by the Manufacturers Certified Material Test Reports (CMTR).
TU Electric has performed the stress analysis for these heat numbers (Reference 1) by using the worst case tensile strength values as shown below.
This analysis demonstrated that these flanges are acceptable for their intended service and design function (Reference 1).
Heat Number Tensile Strenoth (Dsi)
B3701 57,000 M551701 62.000 Corresponding laboratory tensile strength test results for these heat numbers is shown below.
Heat Number Tensile Strenoth (osi) 53701 68.900 H551701 65,700 1
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February 2, 1990 Page 3 of 3 t
Based on the above information no further action is required for Unit 1 installed flanges having these subject heat numbers.
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Sincerely, William J. Cahill, Jr.
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as 6 By:
D. Rs Wo9dlan i
Docket Licensing Manager MCP/vid Attachment c
Mr. R. D. Martin, Region IV Resident Inspectors, CPSES (3) r e.
P.ttachtnent to TXX-90059 i
Page 1 of 3 i
f 8
METALLUROICAL EMOIMEBRIMO SERVICES, IMC L
comenttles
- Palisse Amatyees
- Lateratory 3seeles CERTIFICATE OF TEST I
1 January 29, 1990 j
i n
Chemical and Mechanical Properties REPORT OF:
l REPORT To TU Electric Comancho Peak SES l
5 Miles Northwest of Glen Rose Texas Off.FM 66 (76043) i pATC RECEtvED:
January 27, 1990 L
3 es. Circular Flange Platest 10, Attachment A:
IDENTIFICATION:
Ref. Heat No. 342XI l
12" $lind Flante, 150# SA-105:
Ed.1974, 5'74 Add.: RFI WJi PC#33-0N BRP-VA X-Al-004-8; 1.
ASME Code Class 2;
1 1/4 inches
- thick, 19 inch diameter.
i 1 1/2" RFSO 300#, SA-105, Ref. Heat No, M551701 Ed.1974, w'75 Add.;
RF so Flangel WJ-300-A-106 2.
M561701: ASME Code Class al 13/16 inch thick, 6 inch i
diameter.
3.
2" RF Slind Flange, RFSW S00#;
SA 350 LF2; Ref. Heat No.83701: Ed.1974, 5'74 Add.: 2-WJ-900-SA 350 LF2, MS 2-RB-002-SQ2; AsME Code Class 21 1 7/is 8-370),
inches thick, 8 1/2 inch diameter.
Chemical analysis by ASTM E-30 and E-350 including stomic obsorption, combustion, and spectrophotometric techniques.Brinell l PROCEDURES:
Hardnens by ASTM A*370 and E-10 using directTensile tests as per A load.
Impact tests per ASTM A-st 3,000 kg.
standard, round specimens (F igure 5). temperatures (ASME 1949, Section 370 and E-23 at the specified 11, SA-340, Tables 5-7) using subsite as well as standard specimens.'
g RESULTS:
chemical Compositions are as follows:
SAMPLE NO.
ASTM y
g,Jament. wt.3
_. L
,_2_.
J_
_snac. R an a e_ _,,,
A-105 A-105 A-350 A-105 A-350 0.04 0.22 0.17 0.35*
0.30*
As1M Spec.
0.32 0.59 0.88 0.5-1.05 1.35*
Carbon 0.004 0.015 0.004 0.040*
0.035s Manganese 0.020 0.014 0 022 0.050*
0.0408 Phosphorus 0.02 0.02 0.16 0.35*
0.15
- maximum
I Attachment to TXX-90059 1\\
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,Page 2 of 3
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chemical & Mechanical Properties TV Electric Co.
January 29, 1990 page t t
erinell Hardness values are below:
ASTM spec.A gamnia
_ Hardnamn i mmr aa s i ons._,
Avarame 1DS
.. 3$0..
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85.5
$$.2 85.8 46 187 max.
2 126 133 134 131 187 max.
3 140 140 139 140 197 max, 4
i Tennile Testing (2" gage length) produced the following i
Rnd Dimanatonn.,_(nchag Ultimata,jtranath Yield atranathe
& g,1ggggg, Area Lead, Lbs,
,,. P.1,L.
Load. _Lkg E
1 0.492 0.1901 8,565 45,100 4,375 26,700 7
0.340 0.09079 6,962 65,700 _3,000 33,000 T
0.492 0.1901 13,100 64,900 4,200 43,100
- 0.2% offset hp, t E lonnalja0 Reduction.of Area. t 1
43.4 80.2 2
27.8 60.7 3
33.5 69.0 l
Requirements:
ASTM A-105 requires minimum ultimate and yield (0.2%
offset) strengths of 70,000 and 36,000
- pai, r espe c t i ve l y..
Additionally, Elongation is 22%,
minimum and Reduction of' Area is 30%, minimum.
t ASTM A 350 requires (for Grade LF2) a minimum Yield Strength of 36,000 psi and an Ultimate strength in L
the range of 70,000 to 95,000 psi.
Requirements for tiongation and Reduction of Area are 224 minimum and 304 minimum.
respectively.
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I Attachment to TXX-90059
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Page 3 of 3 N d i$di M N h u N I N wyu e,iw.
Jan.29 90 H 20 P.02 j
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lu Electric Co.
January 29, 1990 t
Page S I
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impact va) pes (in Ft-ths.)
for Sample No. 3.(Heat 853701) are below:
Size / Temp.,
saaelman_
Ft-Lbs.
A-350 j
,, man / ep
,,,,_A a
o AverARs h
z i'
10 x 10
-50 34 23 14 24 15/12 i
10 x 7.5 -65 15 21 28 21 12/10 10 x 5
-70 18 16 14 18 8/7 10 x 2.6 -100 16 16 3
12 4/3 I
i As per ASME $A-350 specifications (1989)in section 11 Code, and/or ASTM A-105-87, the submitted materials do 031. comply, based on tensile requirements for all three semples and based on l
chemical requirements for samples 1 and 2.
All materials comply with the stated hardness maximums and with the minimum required l
impact values (group / individual).
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t Respectfully submitted, t
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Douglas A. $tolk, P.E.
Metallurgical Consultant h
DisTRitVTt0N\\0F REPORT l
(1)
Mr.-Danny Leigh t.ab No. 4347 l
P.o.5665 71863 RMSO #17046; Rel. No.90-0060 NOTE: Svbmmed raetel61 wm be esteined 5 to een vntou operwise notifie o., wiwe oas no e,e we is enien vu W ine o eat a %m my are esseeeess the vu ei w nome as.ei d.
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