ML19324A362

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Test of Safety-Related Threaded Fasteners from Rancho Seco & Calvert Cliffs Nuclear Power Plants, Final Rept
ML19324A362
Person / Time
Site: Calvert Cliffs, Rancho Seco, 05000000
Issue date: 05/18/1988
From: Barnes B
EG&G IDAHO, INC., IDAHO NATIONAL ENGINEERING & ENVIRONMENTAL LABORATORY
To: Abbate C
Office of Nuclear Reactor Regulation
Shared Package
ML19324A112 List:
References
CON-FIN-A-6181, FOIA-89-334, FOIA-89-335, FOIA-89-336, FOIA-89-337 BLB-5-88, NUDOCS 8812270061
Download: ML19324A362 (49)
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. Mehe Ak,nonelI-- s., aj -( 7 y ..i : . 37G y,, ..\\ i n + ,,. 97 7 y r ep :g 'm,, May 18, 1988 M, i w. b Ms. C. M.' Abbate Wf m Vendor Inspection Branch Office of Nuclear' Reactor Regulation M! U.S. Nuclear Regulatory Commission ,11555 Rockville Pike. M: .Rockville, MD 20852

l TRANSMITTAL OF FINAL REPORT ON TEST OF SAFETY /RELATED THREADED FASTENERS -

"I TASK ORDER 88-4 (FIN A6181) - BLB-56-88 .Ref:- (a) R. D.-Folker ltr to S. B. Milan, RFO-224-87, Transmittal of Revision 2 of the NRC Form 189 for Technical Assistance for s,.: Vendor Program Inspections (FIN A6181), October 1987 (b) Task Order 88-4 Project 1, " Test of Safety Related Threaded i Fasteners", December 17, 1987 .5 I

Dear Ms. Abbate:

s In accordance with FIN A6181, Reference (a), EG&G Idaho, Inc. is providing technical. assistance to the Nuclear. Regulatory Commission, Office of Nuclear g s ' Reactor Regulation. This assistance involves the evaluation of 7p7 vendor-related problems with hardware supplied to the nuclear irdustry. W.. Task. Order 88-4.. Reference (b), required technical assistance on testing 18 .{- .g% ' threaded fasteners from.the Calvert Cliffs (M) and Ranchn SecefM nuclear nower plante., The enclosed report satisfies the work scope requirements cf Task order 88-4 and EG&G Milestone Chart Node 144-52. jf '- 4 Results indicate that,el1,148teners;;tigstedmatasitMnathe_boundsef L.N applicable?specificationse Though the minor thread diameters for all gj'1 Calvert C11ffs' cap. screws were less than specified, these cap screws were li not rejectable because the specifications list this as a reference dineension a 'i and not a direct requirement. (4* 3 a, .,e b ~ V ?" N n n. Box 16?6 Idaho Falls, ID BN16 W /e 2 ? ? b $ b i ,*' h g7 +..

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,p Note that not all'of the requirements defined in the applicable ASTM

. Ji 1.< Standards were evaluated. For example, process requirements for the f, fasteners were defined but not evaluated. The tests defined in'the NRC Task 2 Order were the tests that were accomplished. Very truly yours, ..s. B. L. Barnes, Manager Reactor Inspections & Safeguards jm

Enclosure:

As Stated cc: H. E. Polk, NRC/NRR' J. O. Zane, EG&G Idaho (w/o Encl.) I ? 4 ) I A '.Q .g. q', t y., . &g s a .,q. is a sk n.w- .s ,.?'h' , o,1 m..., b

Y NN[hff jl% h k fh 5 ). m$ '. b k 1;. ..,wu 1. und > + i ~;, - 8 ~ 6 .TESTSOFSAFifWREOft0,TCEADt0.FAS,TENERS n r, ~ - > ' &..,J i N. m lL 1 FROM RANCHO $100 MJO CALVERT,. CLIFF 5 NOCLEA4;P(&tt PLANTl ,). 3.P ./ j; ) 58 x . z. C$s, i 1. INTRODUCTION Sivt 't3 s' The U.S. Nuclear Regulatory Connission (NRC), Office of Nuclear peactor i Regulation, Vendor Inspection trench subeltted two (2) cap screws from .. gi Rancho seco Nuclear Power Plant, and fourteen (14) cap screws aad two (2) nuts from Calvert Cliffs Nuclear Power Plants to EG6G Idaho, Inc., for f testing. This assignment was authorized and funded by Task Ordsr 88 4, FIN A6181 Project 1. Previously submitted individual test reports for threaded fasteners are included as an attachment. i i 2. TESTING AND ANALYS!$ l In ordnr to determine the acceptance standards for each threaded fastener, i the identification grade marks on each fastener (Figures 1 through 16) were j correlated with the grade marks and related specifications identified in the l i Industrial Fastener Institute's Fastener Standards. The results of this correlation are presentad in Table 1. The tests defined in the NRC Task Order were the only tesis that were accomplished. 2.1 Mechanical, Tests Ten.s ie and tiardness rests were conducted in accordance with ASTM A-37'.1, Mechanical Testing of Steel Products, or ASTM F606, Method for Conducting g: 21 I Tests to Determine the Mechanical Properties of Externally and Internally vy Y, Threaded Fasteners, Washers and Riwts, which are the standards for mechanical testing of steel fasteners. The specific tests required and the .M$ ' accept-reject criteria for each fastener were determined by reviewing the 4h ! standard applicable to each grade of fastener, i* 1

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,.j. f) 2.1.1 Hardness Tests' + y l Hardness tests were performed using a standard Rockwell hardness tester. s Acceptable hardness machine performance was verified by performing hardness ,g ' tests on certified test blocks prior to testing each fastener. A total of 4; four hardness tests were performed on each fastener. The results are "j e reported in either Rockwell C or Rockwell B scale units. i 2.1.2 Tensile Tests I i Tensile tests were accomplished at Detroit Testing Laboratories, Inc., in accordance with ASTM A-370 using a 125,000 pound load capacity. Tinius 01sen tensile test machine. Extensometer load versus deflection values were I automatically recorded and retained for each tensile test. Full-size i specimens were tested in accordance with ASTM F-606. Proof and ultimate loads were determined and reported. l l t 2.2 Chemical Analysis l .s Samples for chemical analysis were machined from each threaded fastener and i the analysis was accomplished at National Spectrographics taboratories. The specific elements required for product analysis are defined in the ASTM i5 l standard that is specified for each fastener, and only the results obtained d" l for the required elements are reported in the individual fastener reports, f The reproducibility rf the chemical.%1yses resultt reported by National .g l Spectrographics Laboratories were within t,5%. i k'. I 2.3 Dimensional Inspection 8* 4 Dimensional inspections were accomplished by EG6G Idaho, Inc., using a Kodak glTi u 20 magnification comparator. The results of the dimensional inspections are reported in Table 2. The procedures and acceptance criteria that are d defined in ANSI 81.1, 1982 and ANS! B18.2.1, 1981 were used. Pitch N l diameters were determined by using wire gsuges, and ring gauges were used to I verify the class of the thread of the cap screws. Plug gauges were used to determine the class of threads for nuts. 2 1'

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. e..,.; n.. e, rw. minimos minor di. met.rs re iess th.n th. defied r.forence min., b, -( diameters for a11'Calvert Cliffs ' cap screws. SincetN'definedminimum t p l minor diameters are reference dimensions, the cap screws'are not rejectable. 'i - l Examination of the thread root of the Calvert Cliffs cap screws at 20 k., l magnifications, revealed comparatively small root truncations (radit) which %l l explains the reason why acceptable pitch diameters were determined and the ~ { n;inimum minor diameters were less than the defined reference dimensions. 5i l 3. SUf94ARY OF RESULTS t i Threaded Fasteners RS-A and RS-B meet the minimum evaluated requirements o defined in ASTM A-193, Grade 8-7. t o Threaded fasteners CC C through CC-P meet the minimum evaluated requirements defined in ASTM A-449 Type 1. r l Threaded fasteners CC-Q and CC-R meet the minimum evaluated requirements o defined in ASTM A-149, Grade 2H. I 't ? Jp 7 ". I I e; NW d ',t l 4 ylg ; Em

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RS-8' Capscrew RS-22 CB 12 6 x 12 ASTM A-193 Grade B-7 m ~ CC-C Capscrew CC-72-226 3/E : 16 x 1 ASTM A-449 Type I q CC-D Capscrew CC-72-226 3/8 x 16 x 1 ASTM A-449 Type 1 CC-E Capscrew CC-72-226 i 3/6 x 16 x 1 ASTM A-449 Type 1 CC-F Capscrew CC-72-226 J 3/8 x 16 x 1 ASTM A-449 Type I f I , [. CC-G Capscrew CC-72-175 j 3/e'x 24 x 3 ASTM A-449 Type 1 CC-H Capscrew CC-72-175 3/8 x 24 x 3 ASTM A-449 Type 1 Q ;- ^ CC-I Capscrew CC-72-165 ( pg 9/16 x 18 x 3 ASTM A-449 Type 1 i ._?- _.a \\ / a. CC-J Capscrew CC-72-218 5/15 x 18 x 1 1/4 ASTM A-449 Type 1 ~ CC-K Capscrew CC-72-218 5/16 x 18 x 1 1/4 ASTM A-449 Type 1 ~.. CC-L Capscrew CC-72-218 KS 5/16 x 18 x 1 1/4 ASTM A-449 Type 1 t CC-M Capscrew CC-72-279 Q 1/2 x 13 x 3 ASTM A-449 Type 1 J~ CC-N Capscrew CC-72-279 1/2 x 13 x 3 ASTM A-449 Type 1 i CC-P Capscrew CC-72-155/A 5/8 x 18 x 1 ASTM A-449 Type 1 I CC-0 Capscrew CC-72-155 FM 5/8 x 18 x 1 ASTM A-449 Type 1 y-- CC-Q Nut CC-SRI-445767 1xB ASTM A-194 Gradc 2Hs CC-R Nut CC-SRI-445767 1 x,8 ASTM A-194 Grade 2M r A % y ..,gy .c

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  • 10 Size Length length

- Diameter Olameter-Diameter E ggg e t a= n.t n mn h; ') ' Rs-A

1 x 8 x 12 12.065 2.230 0.992 0.856 0.8446 II 0.9112 MM f_' f Cap screws

~- g RS-8. 1 x 8 x 12 12.000 2.30 0.992 0.830 0.8446 1 0.9072 c '[. 't-CC-D 3/8 x 16 x 1 0.980 Fully threaded 0.3680-0.3685 0.2917 0.297 II 0.3293

CC-C 3/8 x 16 x 1 0.985 Fully threaded 0.3682-0.3685 0.2923 0.297 I

O.3281 ~ Q CC-E 3/8 x 16 x 1 0.978 Fully threrJed 0.3685-0.3688 0.2923 0.297 II-0.3295 F

CC-F 3/8 x 16 x 1 0.985 Fully threaded 0.3682-0.3688 0.2933 0.297 II

. 0.3292 O'- -CC-G 3/8 x 24 x 3

3. %7 1.044 0.3692 0.3203 0.322 II 0.3435 CC-H

~3/8 x 24 x 3 3.0% 1.085 0.3698 0.3115 0.3228 I 0.3416 'CC-1 9/16 x 18 x 3 2.950 1.440 0.559 0 838 0.4929 II 0.5220 CC-J 5/16 x 18 x 1-1/4 1.260 Fully threaded 0.3038-0.3052 0.2378 0.2431 1 0.2706 CC-K 5/16 x 18 x 1-1/4 1.250 Fully threaded 0.3048-0.3052 0.2372 0.2431 1 0.2709 CC-L 5/16 x 18 x 1-1/4 1.250 Fully threaded 0.3040-0.3048 0.2370 0.2431 I 0.2709 CC-M 1/2 x 13 x 3 3.006 1.2745 0.4825-0.4837 0.403 0.4041 II 0.4479 CC-N 1/2 x 13 x 3 3.014 1.310 0.494 0.402 0.4041 II 0.4466 ~ .CC-0 5/8 x 18 x 1 0.960 Fully threaded 0.618 0.549 0.5554 1 0.5816 iM CC-P 5/8 x 18 x 1 0.982 0.90 0.616 0.5475 0.5554-11 0.5844

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0, ..w,m. w a ' Sample, Identification: R$-A ,;y.g' t l'i4,* 7 Source: Rancho $eco'. T,,' - < } 2 ..t < N,[f.; M L* s ,m Sample Type: Bolt f $1 e: 1x8x12 >'t Identification Grade Mark: Q7 3% ASTM standard: A 193 Grade s 7 k,.a 1 ; t s#k j p't, CHEMICA!. COMP 0b' TION (wt%) ASTM Chemical Specifications Actual Chemical Analysis Results Carbon - 0.37 - 0.49 0.41 4; Chromium - 0.75 - 1.20 0.91 Manganese - 0.65 1.10 0.79 Molybdenum - 0.15 - 0.25 0.22 Silicon - 0.15 - 0.35 0.23 Phosphorus - less than 0.035 0.008 Sulfur - less than 0.040 0.021 Boron - not controlled Less than 0.0005 MECHANJCAL PROPERTIES Minimum ASTM Mechanical Specifications , Actual Mechanical Measurements Ultiraate tensile strength - 125 ksi 149.8 ksi 0.2% offset yield strength - 105 ksi 158.8 ksi Elongation - 16% 18% Reduction in area - 50% 59% Hardness Rc 28-32 Remarks: Fastener meets the mir.imum evaluated requirements defined in ASTM A-193 M86 t Grade B7. l , o I '5 .I A(4.., m e l =

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u, ! w:,, j CHEMICAL COMPOSITION (wt%) l ,J ! 5-m ASTM Chemical Specifications Actual Chemical Analysis Results l t Carbon - 0.37 - 0.49 0.44 Mi Chromium - 0.75 - 1.29 0.91 Manganese - 0.65 - 1.10 0.79 Molybdenum - 0.15 - 0.25 0.22 Silicon - 0.15 - 0.35 0.23 Phosphorus - less than 0.035 0.008 Su' fur - less than 0.040 0.022 Boron not controlled Less than 0.0005 MECHANICAL PROPERTIES l Minimum ASTM Mechanical Specifications Actual Mechanical Measurements Ultimate tensile strength - 125 ksi 148.1 ksi 0.2% offset yield strength 105 ksi 137.0 ksi Elongation - 16% 18% Reduction in area - 50% 59% Hardness Rc 28-30 i Remarks: Ah 4t Fastener meets the minimum evaluated requirements dnfined in ASTM A-193 M86 'Yk ; Grade 87. J#. a > 4 st > 6:4 L, w, I g , &>[] ! -w:,3 t l s.- i-g Yu l e

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- c' 'x i' Source: Calvert' Cliff D' " 'a e. i sample Type: Cap Screw $0 o Size: 3/8 x 16 x 1 Ider,tification Grade Mark, ,.'i j ASTM Standard: A 449 Type 1 , : J,. CHEMICAL COMPOSITION (wt%) v. ASTM Chemical Specifications Actual Chemical Analysis Results 1 Carbon - 0.25 - 0.58 0.36 Manganese - not less than 0.57 0.75 l Phosphorus - not more than 0.048 0.020 Sulfur - not more than 0.058 0.12 Boron - not controlled less than 0.0005 i MECHANICAL PROPERTIES Minimum ASTM Mechanical Specifications Actual Mechanical Measurements t Hardness Rockwell C 25-34 Rc 33-34 Remarks: Fastener meets the minimum evaluated reauirements defined in ASTM A-449-86 Type 2. .:y; ..N % $$i 4..

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  • h ASTM Chemical Specifications Actual Chemical Analysis Results Carbon - 0.25 - 0.58 0.36 Manganese - not less than 0.57 0.74 Phosphorus - not more than 0.048 0.019 Sulfur - not more than 0.058 0.008 Poron not controlled Less than 0.0005 MECHANICAL PROPERTIES Minimum ASTN Mechanical Specifications-Actual Mechanical >Sasurements Hardness Rockwell C 25-34 P.c 31-34 Remarks:

Fastener meets the minimum evaluated requirem>nts defined in ASTM A-449-86 Type 1. g s s . sh wdqt d .r t .*v .d .*Q ,\\' 0 ',' .{g Ci?. (1, ~.k' S.c. i m

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m - e ' y .'. c 5- _ 1J p N& SampleIdentification: CC-F ./ " ?e r" I .1 %M tourcei' Calvert Cliff' ' ^,.. v' ~"%j, Sample Type: Cap $ crew W Size: 3/4 x 16 x 1 %;l'! ldentification Grade Mark: n ASTM Standard: A-449 Type 1 'yt, , L; 2: iri[MICALCOMPOSITION(wt%) my [ ASTM Chemical Specifications Actual Chemical Analysis Results .a Carbon - 0.25 - 0.58 0.35 Manganese - not less than 0.57 0.75 Phosphorus - not more than 0.048 0.027. 2 Sulfur - not more than 0.058 0.009 Boron - not cortrolled Less than 0.0005 ~. t (1C,HANICAL PROPERTIES Minimum ASTM Mechanical Specification, Actual Mechanical Measurements Hardness Rockwell C 25-34 Rc 33-34 Remarks: Fastener meets the minimum evaluated requirements defined in ASTM A-449-86 Type 1. } y 4: c h,.

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i Carbon - 0.25 - 0.58 0.38

'd.' ~' Manganes - not less than 0.57 0.69 i Phosphorus - not more than 0.048 0.028 Sulfur - not more than 0.058 0.018 i 8oron - not controlled 0.0005 MECHANICAL PROPERTIES ,e Minimum ASTN Mechanical Specifications Actual Mechanical Measury,* g i Ultimate tensile load - 10,550 lbs 12,250 lbs Proof load 7,450 lbs Acceptable Hardness Rc 29-33 I. Remarks: L f Fastener meets the minimum evaluated requirements defined in ASTM A-449-86 Type 2. + -tA t 'N M.h 'i 1 JJ. &lq* i 7 l .X "4 3_ s..e is, 'r y; i n' .e 'i '4 .k * . W& .m

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ASTM Standard: A-449 Typ9 1 My' jff x i CHEMICAL COMPOS! TION fw+%) I ASTM Chemical Specifications Actual Chemical Analysis Results l Carbon - 0.25 - 0.58 0.34 i Manganese - not less than 0.57 0.74 Phosphorus - not more than 0.048 0.014 Sulfur - not more than 0.058 0.015 + Boron - not controlled Less tha;6 0.0005 ) MECHANICAL PROPERTIES Minimum ASTN Mechanical Specificatier.s Actual Me:hanical Measurements Ultimate tensile lead - 24,350 lbs 27,650 lbs Proof load - 17,250 lbs Acceptable Hardness Rc 30-31 Remarks; e i Fastener meets the minimum evaluated requirements defined in ASTM A 449-86 Type 1. ,e** ~ a k w.l > M~ 9

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j sample Identificatiion: CC-J. .,u y, .nj p,. jJi j Source' Calvert Cliff o WD '"1 Sample Type: Cap Screw ~, ' 1 Size: $/16 x 18 x 1-1/4 Identification Grade Mark: ei' - . jc{i; .1 ASTM Standard: A-449 Type 1 ..pp, ' CHEMICAL COMPOSITION (wt%) W j ASTN Chemical Specifications Actt'al Chemical Analysis Results b Carbon - 0.25 - 0.58 0.35 Manganese - not less than 0.57 0.72 Phosphorus - not more than 0.048 0.024 Sulfur - not more than 0.058 0.018 Boron - not co,ntrolled less than 0.0005 MECHANICAL PROPERTIES i Hinimum ASTM Mechanical Specifications Actual Mechanical Measurements i Ultimate tensile load - 6,300 lbs 7.250 lbs i Proof load - 4.450 lbs Acceptable Hardness Rc 26-29 Remirks: Fastener meets the minimua evaluated requirements defined in ASTM A-449 86 Type 1. ,,i \\8P 'l 99 l ...c un 'Q a

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r CHEMICAI,COMPO$! TION (wt%) ap; ASTM Chemical Specifications Actus) Chemical Analysis Results { J Carbon - 0.25 - 0.58 0.34 Manganese - not less than 0.57 0.74 Phosphorus - not more than 0.048 0.02b Sulfur - not more than 0.058 0.018 Boron - not controlled Lest than 0.0005 i MECHANICALPROPER,TJi}, Minimum ASTM Mechanical Soecifications Actual Mechanical Measurements Ultimate tensile load - 6,300 lbs 7.250 !bs Proof load - 4,450 lbs Acceptable Hardness Rc 30-31 Remarks: e y fastener meets the minimum evaluated requirements defined in ASTM A-449-86 Type 1.

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Boron - not controlled Less than 0 0005 MECHANICAL PROPERTIES Minimum ASTM Mechanical Specifications Actual Mechanical Measurements Ultimate tensile load - 6,300 lbs 7.250 lbs Proof load 4,450 lbs Acceptable Hardness Rc 29-31 e-Remarks: ~ Fastener meets the minimum evaluated requirements defined in ASTM A-449-86 Type 1. 4y . ai. l% ~ q.. } ,f t 4i +. q,_ t. t i

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1/2 x 23 x 3 -"ky Identification Grade Mark: 9]R ASTM Standard: A-a49 Type l 4 CHEMICAL COMPOSITION (wt%) i ASTM Chemical Specifications Actual Chemical Analysis Results S Carbon - 0.25 - 0.58 0.35 .f; W Manganese - not less than 0.57 0.73 Phosphorus - not more than 0.048 0.016 Sulfur - not mcre than 0.058 0.019 Baron - not controlled Less than 0.0005 MECHANICAL PROPERT!ES Minimum ASTM Mechanical Specificationj, Actus1 Mechanical Measurements Ultimate tensile load - 17,050 lbs 22,000 lbs Proof load - 12,050 Acceptable Hardness Rc 29-32 Remarks: Fastener meets the minimum evaluated requirements defined in ASTM A-449-86 Tpe1. NP 9 %e a '7 t \\ t i.Y" -k l k l c 0 l l 1 l l l l

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