ML20100R333
| ML20100R333 | |
| Person / Time | |
|---|---|
| Site: | Shoreham File:Long Island Lighting Company icon.png |
| Issue date: | 10/01/1984 |
| From: | Lowrey M AFFILIATION NOT ASSIGNED |
| To: | |
| References | |
| OL-I-024, OL-I-24, NUDOCS 8412170386 | |
| Download: ML20100R333 (5) | |
Text
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1 1 BEFORE FHS ATOMIC SAFETY AND LICENS 3' 2 7IO8 4 2 ---o m--- 9 448%$i' h '
3 In the matter of ) ,
LONG ISLAND LIGHTING COMPANY, ) A* S 4 ) DOCKET 110. 50-332-OL (Shoreham Nuclear Power )
5 Station, Unit 1) )
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10 DI.PUSITIOtt Of MAURICE II. LOWRCY 11 May 10,1984 12 13 14 lb lo 17 la is :tEPORTCD 3Y:
JOAN ltARIE COLUMBINI, CSR t10. 5435
. 20 21 22 23 24 8412170306 041001 PDR ADOCK 05000322 0 PDR 25 26 TOCKE3 & A:!T3 CERT!/IED S:10RT!!AND REPORTCR3 27 6 3L HAIMET ST3EET, SUITE 925 SAN FRA!!CISCO, CALIrontlI A 94105 COMPUTER /2ED 2a 4L5/332-0650 TRANSCRIPT I
PREDERIC R. T00KER XEMSLO ANT 3
15 1 A. Not that I can recall.
2 Q. Did the lengthening of the cylinder head bosses 3 inholve a. thickening of the material of the cylinder 4 block?
5 A. Not to my knowledge, except in that area where 6 the boss lengthening occurred.
7 Q. In that particular area, what was the extent of 8 the thickening, approximately?
9 A. Again, if memory serves me correctly, 10 approximately five and a half inches.
11 Q. Did the thic4ening of the cylinder block in 12 that area increase the weight of the block?
13 A. Yes, air.
14 0 By approximately how mucn?
15 A. I don't really know.
16 Q. Was the change in the design of the cylinder .
17 block that you have just referred to made in response to 18 any problems experienced with the prior design block?
13 HR. SMITH: I believu tne question has aircad*/
20 been asked and answered. I think this witness testified 21 caat as a result of eno c.<porience with the aV3. .
22 MR. DYNNER: J. Can you answer the question?
23 A. Would *ou
/ say again pieace, air?
24 Q. Yes.
25 Was tne enanJe in the duaign of the cylinder 26 block made at all in response to any problems experienced 27 with the prior casigined bices?
23 A. It das 4/ judgment that the deepening, if you
'L TOOXEP & A373 6 81 Itas kut S treet San Francisco 94105 415/392-0650
16 1 will, or lengthening of the head stud bosses would reduce 2 ."f. -lthiP'M. elb111ty of cracking noticed around the head stud 3 ",. besses offthe previous block.
4 Q. To what estent was cracking in the area of the 5 head stud bosses in the prior design cylinder block 6 experienced?
7 A. You will have to give me your meaning of 8 " experience,* please.
9 Q. Certainly.
10 were you aware of problems in cracking in that 11 area experienced by Delaval R4 engi 12 A. Yes, I was.
13 Q. Was that problem of crack 14 documents that you saa?
15 A. In documents that I prepa 16 Q. How did you come to prepa 17 A. As a result of various fi 18 made and records that I had made du 19 and in the normal course of recordi 20 Q. In approximately how many enginen in the field 21 did joa note cracking in that portion of the cylinder 22 block ?
23 MA. SMITH: What time period are we talking 24 about?
25 MR. DYNNER: Whatever time patiod he is !
26 referring to with respect to the r2 ports that he prepared.
27 Do you understand the question?
2J THE WITNESS: WoJ1d f ou repeat?
T00KE3 & ANT: 6 81 Furke t S treet San Francisco 94105 415/332-0650 l
62 1 AFTERNOON SESSION 1:35 P.!!.
2 ECAMINATION BY MR. DYNNER (Resumed) 3 NR. DYNNER: Q. Mr. Lowrey, do you recall this 4 morning we talked briefly about the crankshaft for the 5 DSR-48 engine witn the nominal 12 inch crankpin in wnich 6 you participated in design.
7 Who prepared the detailed design drawing for a that crankshaft?
9 A. I don't know.
10 Q. You mentioned that the replacement crannshaft
- 11 for that design for une Shoreham engines was shot peened.
12 Do you know who performed the shot peening oper'ations?
13 A. No, sir, I don't. -
14 Q. Do you know the procedures that were folloeed 15 for che snct eoening process?
16 A. Likewise. I don 't know that.
17 Q. D1J che rejlscement crankshaft design specify a la lif f erent grado of material than its predecessor, that is 19 ne crankshaft with the L1 inch nominal crankpin?
20 A. I don 't recall .shether it did or not, tir .
21 Dynner.
22 Q. Was the replacement design crankahaft te s to.1 23 here at the Delavel factory before it sas supplica to an-l 24 customers?
25 A. No, sir, it was not, because we nave never 26 dailt a crankshaft chac had been snot peened. So in tac 27 strict cease of cne word, se nave never operator a 23 crankahaft that hed bacn snot ,,eened other than at L!
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1 UNITED STATES CF AMERICA NUCLEAF REGUIATCEY COMMISSICN 2 lif2IA lh1_11SI12 11f211 And_LisfGEing 4'C I '
3 --------------------------------------x 1
4 4 In the Matter cfa s
5 LCNG ISLANE IIGHTI3G CCFFANY : Eccket Nc.
(Sherehas Nuclear Pcwer Ststien, s 50-332-OL-3 6 Unit 1) a (IcW s Fever) 7 --------------------------------------x 8 gig Third Avenue Ne w Y c:k , New Yc:k 9 Wednesday July 18, 1984 10 DEFCSITICN cf RICHARD WCYTCVICH, HOW ABD 11 C. ELA P.EING and 30EEST A. GICFFRA, on behalf of the 12 Ame rican B ureau cf Shi g ging , called for examinatice by 13 counsel for Suffolk Cocnty in the abcVe-entitled 14 action , pursuant te sutscena, the witnesses havice teen 15 duly swc:n by NICHCIAS J. TCERE, a shorthand reporter 16 and no tary guhlic fc: the State cf Sev Ycrk, at the 17 of fice s cf Paul, Weiss , Rif kind , Wharten C Garrisc:,
18 919 Third Avenue, beu Ycrk, New Yc:k, at 1Cau5 a.m.,
19 the pecceedings being taken down by Stenotype by 20 Nicholas J. Tctre, and t:scscribed under his directicn.
21 .
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20 F $7 M.W WASHINGTON. 0.C. 20001 (202) 628 9300
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1 2, sere abcve 1C0 gercent lead?
2 WITNESS WOITCWICH: .Vo , I don 't belie ve 3 they did.
- WITNESS GIUFFRAs Can Tcu rephrase the 5 question or repeat the question 7 s C on page 28 of Exhibit No. 2, it lists T cre raticg hcurs at 1CO garcect Icad and abcve. It 8 do esn ' t treak down inte hcw many hours for 100 percent 8 lead and hcw many hcurs,abeve 100.
10 Eid TEI give roc any idea cr LILCC cc i
11 Failur e Analysis Asscciates, give ycu any idea as te 12 hcw many hcurs cf cgeration cecurred a t abcVe 10C 13 percent load ? ,
l' WITNESS GIUEER A: I dcn't believe they
' ' 15 did.
16 WITNESS WOYTOWICH: Nc.
17 C Then how do ycu know, sir, whethe r it 18 was one hour cf overload, cf the 116 or 114 cr 110, cr i
18 whether it is all cf these hcurs at 11C gerce.t 1 cad 7 a 20 WITNESS GIUFFSAs In the other eclumns, 21 further ever, there is an indicaticn, kilowatt rating,
' 22 450 rpm, total hcurs 1cceed, with three numbers l
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' ALDER 5oM REPoRTlHG COMPANY,lHC.
20 P $7., N.W., WASHINGTON, D.C. 20001 (202) 428 9300
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1 indicated there, f er three dif f erent engines.
2 Then you would go over to the last 3 ccitan, cther leads and hcurs rescrted, 35CC and ateie.
- Car assumptien was that you would 5 suttract the nusher indicated in the isst eclumn fecr ,
8 the first one. That wculd represen t--that way you T would find out how many were dcne abcVe.
8 In actual fact, 114, 116, 110, were dcne 9 at above 3500 kw.
to C Are ycu familiar with cr dc ycu knew, 11 sir, of the service exserience cf the crank shaf t that 12 was in these three sacticular engines at LILCO, hefere 13 this replacement crankshaf t var installed?
14 WITN.ESS GIUFFRA t I guess I don 't ,
15 'except from what I read in the newspapers.
16 Q What do you know?
17 WITNESS GIUFERA: I understand they-18 fcund a crack in them. That is alcut the extent of my 19 knctledge.
20 C Do ycu have any kncwledge?
21 WITMISS WOYTCWICE: Caly what I read in Zt the ne vspapers. We did not discuss the ea rlier ALDER $oM RtPoATINe company,INC.
20 P ST., N.W., WASHINeToN, D.C. 20001 (202) 428 9300 3
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l 93 1 Exhibit No. 2 or Exhibit S--
2 C Two.
3 WITNESS WOITCEICH Two. They do ,
e indicate that the crankshaf ts were shot geened. They 5 do indicate tha t their ex;erience shews that shot a peening contributes to the fatique strength cf the 7 mat eri al .
8 We accepted these statements which ther 9 ande.
to C Do you know if Transaserica Celaval sas 11 ressonsihie for writing that section of the report that 12 you are referring tc, that shocid be Sectict 3, 13 strain -gauge matters.
14 UITNESS WCYTCHICH: Since it is all 15 under Roland Yang's signature on the f ront sheet, and !
16 dcn 't see acy cther siccatures, I assure that it was 17 done b y, Transamerica Delaval.
is C Sut ycu don't know that for sure, ycu 19 are assuming?
20 WITNESS WOYTCWICH Nc, we didn't see 21 ther write it. ,
22 WITNESS GIUTTRA: When semething is i
1 l l
I ALDOR$oM RtPoRTING COMPANY,INC.
20 P ST., N.W., WASHINGTON, D.C. 20001 (202) 428 9300 LL
1 98 t shct p eaning, on a crankshaf t, sculd it be impcrtsct to 2 you to know whether the shot geening was done correctly 3 cc gro perly?
4 BITIESS SCITCHICHs If the crankshaft 5 sere being installed in a c1'assed vessel, the shct a peening would presumably be doce under the ccanizance 7 of cur attending surveyors.
8 Their judgment sculd core inte play it 9 that area. So that, if it were being dcne cn a classed 3G vessel, yes, we would want te kncu at least whether the
. 11 sucveyor had any objection tc the prccess being a;;11ed.
12 C And in considering a crankshaft act te 13 he installed in a classed vessel--
I' WITNESS WOTTCWICHs In this case wo 15 could caly review what was geesented tc us. We didn 't 18 sake j udgments en infecsation act presented to us.
IT C so that, is it ccerect tc say that ycc 18 assumed it was properly dcne in this esse?
19 WIT 3ESS WOYTCWICHs Yes.
20 C Are thoce any adverne effects to shot 21 pee nin g ?
22 39. STPCUFIs Ctjection to the fc:s cf ALDIeSoM RtPCRflHe COMPANY,INC.
20 P Sf., N.W., WASNIMeToN, D.C. 20001 (202) 428 930e J
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99 7 the questicn.
2 C Cf a crankshaft?
3 WITNESE BLANCING: If ycu assume that 4 the shot peening is carried out correctly, you sount a 5 strip cutside and that is seant te curi up a cartsir
- anc cat , if that is dona correctly, there presumably T would te no adverse effects.
8 I believe that is what the recctd stess.
9 If you continue it too long or if yet to don 't de it correctly, then you certainly could cause 11 scue pecklems.
11 Q What type of problems?
13 UITNESS ELANEINC4 Well, ycu cculd 14 create scne distortica cf the setal surface. ,
15 C What ef fect sight that have?
16 UITNESS BLANCINCs Hight increase stress 17 concen tration f acters. It sculd have metallurgical
. 1e ef f ect s .
is I wculd not te prepared to ccament en 20 tha t. Tha t is a metallurgical gechien. There is an 21 accepted technique for doing shct geening, and accosted 22 criteria as well, fcr the results of the sctk.
l ALDfR$oN RIPoAflM4 COMPANY,INC.
20 P ST., N.W WASHINGTON, D.C. 20001 (202) 428 93ee
it2 1 application or with the submission, the particulars 2 that are listed in paragraph 34.3.17 3 EITNffs CIUFIBA4 Just at that time.
' Over the years, that inforsation would he in our files.
S C Cc ycu know the value that Transaserica
- a Delaval conveyed to you as to the maximum firing T pressure cf this engine?
8 WITNESS WCYTCWICHa That is the first 9 page of Attachment 5. We have the pertinent page frCm 10 our ap ptcral record tog.
11 And that indicates a saximum firing 12 pressure of 17CC psi.
13 C Is that for cperation at fu11 load?
14 WITNESS WOYTC1ICH: Fcr cperaticn at the
18 ca ting shown there.
18 Icu wcuId have tc convert the hersescuer IT to k11cuatts to see what that invcived.
18 C Iasediately tc the left of that, sir, 19 the first page of Exhibit 5, there is a reference tC 20 1600 p si. To what does that refer?
21 A At the time the drivinos were suhsitted, 22 they asked for both ratings to be aspecved for whatever ALDeasoN AGPoRflNe COMPANY. INC.
20 P, ST M.W WASN4MeToN, D.C. 20001 (202) 428 9300
163 1 WITNESS WOYTCWICHs Torsiograph 2 seasurements.
3 C All right.
4 WITNESS 90YTCHICH: But these were, in a 5 sense, supported by the calculations.
e C Eidn't teth the calculations and the 7 torsiograph sensurements indicate that ABS allowable 8 stress limits were possibly exceeded?
9 WITNESS WOYTCEICH Yes.
10 Now, to address --
11 WITNESS GIUFEEA: I think they indicated 12 that they exceeded stress values which were indicated 13 in cur tables. I want to add, thcuch, that there are 14 provisicus to censider values higher in the notes to 15 the se tables.
18 C We have gone thecuch that.
17 WITNESS GIUFERAs Fine. Fron your 18 qu e sticning , that wasn't te c clea r.
19 WITNESS WOYTCWICHs To f urther discuss 20 the ma tter cf t sut n valites and cut acceptance, 1cck 21 at handwritten notes, fcur, five and six cf six, cf 22 Exhibi t Ec. 2.
I ALDIR$oM R$poRitNG COMPANY,INC. i 20 f ST., N.W., WASHINGTON, D.C. 20001 (202) 628 9300 Z
164 1
Q One scaent.
2 All right.
3 WITNESS WCYTCWICHs In these 4 calculations , we censidered the submitted values ard S values which we found in our check prccess, uainc a 8 papes by F. F. Forter, which is a 1cagstandin; 7 reference dccument in tersicnal vibraticn analysis, 8 publis hed in the 1940's.
8 Ee cttained t sch n values fecm that 10 paper.
11 Ec that, va did have some verificatien i
12 of the t-n values, but there are cf seccndtry 13 impcrt ance, because we believe that the torsiegraph 14 test measurerents are the primary indicator of what the 15 stresse s -- wha t the vibratcry stresses in the 18 erscks haf t vculd be, rather than a thecretical 17 g radic ticn .
18 C Fow d id the IDI submissien cf t-n values 18 ccrgars with the values in Iceter?
23 WITNESS WCYTC'4*CH4 'd e didn't ecmcare 21 ther directly. We en17 lecked at the evers1'1 results, 22 which were comparabit.
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20 P $7., N.W., WA$NIN4 ton, D.C. 20001 (202) 628 9300
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16S 1 C Is it ccrrect that ycu relied en, fer 2 ycur d ay 3rd letter, strain-gauge test meas urements 3 that T CI pecvidad?
4 WITNESS WCYTCHICH4 We relied on that to 5 fers part cf cur judgment, yer.
6 C Ciq ycu rely en the fact that the 7 c: arks haf ts were shct poened for that same letter?
6 3;T.1ESF WCYTC;ICH We relied en their 9 sistem ents in that regard.
to C Cid ycu rely cr. the service experietce 11 that T CI submitted to you?
12 WIT 5ESS WCY1CWICE: Yes.
13 C Anything else that ycu relied en in 14 reaching your statement of no chjection?
15 WITNESS WCYTCWICHs Cne ether sspect to that wasn 't censiderad yet, and since we vill need tc 17 explain it scener c: la ter, zicht as well icek at that III now.
19 Sheets fcur, five and six, stee three, 20 deal with ancther aspect cf cur rules which, believe it 21 cr cct, ycu haven't h cucht up.
22 C I beliove it.
l ALDER $oN RIPomflNG COMPANY,INC.
20 P ST., N.W., WASHINGTON, D.C. 20001 (202) 428 9300 l to l
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2 C Cid ycu rely cn the TCI suhrittal fCr 4
3 your information as to the strain-gauge tests?
4-, 51$ NESS ECYTCEICH: Yes. 9e had no-
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5' cther source of that informaticn.
a C Cid you perf crm any ind epe nd en t 7' verificatica cf
- hat?
8 WITNESS WOYTCGICHr Net experimentally;-
9 only in the f act that we did an independent fatigue to analysis to consare thecretical results acainst 11 strain-Cause measured results.
12 C Cid ycu independently verif y any sarvice 13 experience submitted by TCI?
14 -
WITNESS WOYTC3ICH: Nc.
15 C Cid you independently verif y anything 16 ahcut the shc geening ;erfccmed on the crankshaftsi 17 WITNESS WOYTOWICH: No.
18 .
C If it were chewn tc ycu tha t any cf this 19 infccmation you relied cn in reaching ycur ccnclusicn 20 in the hay 3rd letter sas inecerlete, ir.ccrrect er
' i 21 mislea ding , would you have cc1 reconsider your 22 ccnclu sien in that letter?
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- 20 F ST., N.W., WASHINGTON, D.C. 20001 (202) 628 9300 3
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1 MR. STECUPE: Objection.
2 WITNESS BLANCING: I think the answer is 3 o bviou s . Yes.
4 35. SCHEIDT A shcrt break.
5 (3ecess.)
8 dE. SCHEICT: The Zay 3rd le,tter 7 identified as Exhibit 3, rafers tc torsional vibrations 8 at fiv e and a half crde r critical s;eed.
9 Would operations of th se engines at to that s peed he deletericus?
11 %ITNESS WCYTC5 ICE: %e have indicated 12 that we sculd have ne ctjectice tc cperaticn at that 13 speed. If we had e.n chjecticn te such cperatien, se 14 wculd have indicated that censideratica should he civen 15 to the establishment cf a tard speed race.e.
16 Eased on the submitted inf ormation, and 17 hav ing ccme tc the assess =ect cf the safety facters and 18 service expe rie nce with cc ; arable en gines , cur 19 cenclusien was that en that basis, then, we wccid have 20 no cbj ection to such operation .
21 As te whether er act it is deletericus, 22 creratien cf a:Y encine at any s;eed is rcrewhat l
ALDER 5oM REPORTING COMPANY,INC.
' 20 F ST., N.W., WASHINGTON, D.C. 20001 (202) 628 9300 I
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1 FILE: LILCOGEN BASDATA A ABS CCMPUTERS, INC.
BRANCHED HOLZER TABLE INPUT DATA FCR :
LI CC Shcrenam Plant - Emergency Ciesel Gen - Delaval/ Enterprise ::SR-48
- OF BRANCHES-1
- OF MASSES IN EACH BRANCH (CNE ENTRY PER LINE)-
11 ERANCH#,NASS#, INERTIA, STIFFNESS (FOUR ENTRIES PER LINE- SEPARATE WITH COMMAS):
1 , 1 , 81.66 , 6.97452E+08 i 1 , 2 , 590.664 , 1.0167E+09 1 , 3 , 575.064 , 1.0167E+09 1,4, 575.064 , 1.0167E+09 1 , 5 , 575.064 , 1.0167E+09 1 , 6 , 575.064 , 1.0167E+09 1 , 7 , 575.064 , 1.0167E+09 1 , 8 , 575.064 , 1.0167E+09 1 , 9 , 601.788 , 9.233E*08 1 , 10 , 13200.6 , 3.3213E+09 1 , 11 , 31805.2 NCNEXISTENT 1
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-e-I FILE: LILCODAT BASDATA A ABS COMPUTERS, INC.
H0'."ZR
. TADLE FOR 1 BRANCHES FOR:
LILCC Shera. nam Plant - Emergency Diesel Gen - DeLaval/ Enterprise DSR-48 l BRANCH # 1 (MAIN TRUNK)
- BRANC!st MASS # INERTIA STIFFNESS le 1 81.66 6.97452E+08 El 2 590.664 1.0167E+09 1 3 575.064 1.0167E+09 1 4 575.064 1.0167E+09 1 5 575.064 1.0167E+09 1 6 575.064 1.0167E+09 1 7 575.064 1.0167E+09 1 8 575.064 1.0167E+09 1 9 601.788 9.233E+08 1 10 13200.6 3.3213E+09 1 11 31805.2 FCR OMEGA 1 FREQUENCY STEP = 10 TOLERANCE = .0.01 CMEGA = 243.283 BRANCH # MASS # AMPLITUDE TORQUE AF"ER MASS 1 1 1 4.83317E+06 1 2 .99307 3.95502E+07 1 3 .95417 7.20264E+07 1 4 .883326 1.02091E+08 1 5 .782912 1.28738E+08 1 6 .656288 1.51076E+08 1 7 .507694 1.68356E+08
, , 1 8 .342103 1.8E+08 1 9 .16506 1.85879E+08 1 10 -3.62596E-07 1.57549E+08 1 11 -0.36955E-02 -2414.43 (REMAINDER TORQUE)
SUM CF I=A SQUARED = 2708.68 CMEGA = 583.867 '
BRANCH # MASS # AMPLITUDE TCRQUE AFTER MASS f-! 1 1 1 2.78379E+07 gE,'s 1 2 .960086 2.21159E+08 1 3 .74256 3.6673E+08 1 4 .381854 4.41588E+08 1 5 -5.24807E-02 4.313E+08 lh
FILE: LILOODAT BASCATA A ABS COMPUTERS, INC.
1 6 .476696 3.37849E+C8 1 7 .808996 1.79254E+08 1 8 .985305 -1.39052E+07 1 9 .971628
-2.13235E+C8 i 10 .74068 -3.54637E+09 1 11 .327085
, . 18588.5 (REMAINDE*4 TOROUE)
SUN OF IaA SQUARED = 13306.7 I ONEGA = 733.061
- BRANCH 4 MASS 8 AMPLITUDE
- TORQUE AFTER MASS j 1 1 1 4.38823E+07 7 1 2 .937082 3.41321E+08
! 1 3 .601367 5.2716E+08 i 1 4 8.28666E-02 5.52768E+08 i 1 5 .460822 4.10362E+08 1 6 .864443 I 1.43226E+08 1 7 -1.00532 -1.67444E+08 1 8 -
.843623 -4.27218E+C8 i 1 9 .420422
-5.63177E+08 1 10 .19954
' 7.81365E+08 1 11 .045719
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- SUM OF I=A SQUARED = 2998.74 I
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KOBE STEEL.LTD . TAKA 8 AGn l'I. ANT 2-3-1 $HINH AMA ARAl.CHrs o g ;ig t o T A K A: Ar. 5HI H & u KEN aid JAlAN TEl.El'Hu.N. TAKAb AGO wit 44 3 4 3 3 g CABLE: KolsE ETEE!. TAKA5As.u
- TELEL 5655 293 KonsT!. J 17 February 1984 0 9 Mr. Gregory M. Beshouri p 9 Research & Development Engineer Engine and Compressor Division - toD@g [%~
Transamerica Delaval Inc. M-3 gPg7 550 85th Avenue Oakland, California 94621 QgA 9 U.S.A.
\ v 4 \
Dear Mr. Beshouri 6i ' ' '
It was my great pleasure to have your letter of December 21, 1983 on our crankshafts with fillet cold rolling.
First of all, I would like to stress that our fillet cold rolling technology will be very promising way for the cost reduction of your RS-type crankshafts. However, I also have to confess that at this moment Kobe Steel does not produce solid crankshafts with fillet cold rolling.
l The reason is that the fillet cold rolling technology for solid crankshafts was developed more than ten years ago simultaneously with that for shrink fitting crankshafts. As the latter was applied to cast steel crankshaft, the technology got many interests of engine builders from the first stage and we have already delivered numerous shrink fit cast steel crankshafts with. fillet cold rolling. On the other hand, requirements to solid crankshafts were not so severe that the fillet cold rolling technolocy for solid crankshafts could not have any actual demand of engine builders and was not ~
extended to actual production. Consequently , we have enough data to get approval of ship classification societies on the improvement of fatigue strength of forged solid crankshafts,
/
fY
$ STEEL. CASTINC & FORGING DIYl$10%
I KOBELCO..in,.,r..n . it.4...,tt a .n KCBE S TE E L's <. d.<a
. \
. +MosE STEEL.LTD. TAKASAGO PLANT but have not a fillet cold rolling machine for the actual production.
1 I recieved similar questions with yours from some of ou_ ,
clients last year and we have decided to restart the develop-ment of fillet cold rolling machine for solid crankshafts.
It probably requires about one year for the development.
Mcwever, if your demand for this technology is very high, the time schedule will be rearranged.
As for the fatigue strength, a carbon steel crankshaft J
with fillet cold rolling (base metal tensile ' strength 7'B=60kg/mm2) is higher than a heat treated low2 alloy steel crankshaft with the tensile strength of 70kg/mm . And the cost is estimated to be between those of non-treated carbon steel and low alloy steel crankshafts.
)
I estimate that shot peening on this' size of crankshafts g
i gj is a waste of time. Because, the hardened depth by shot-i
- peening is estimated to be quite shallow comparing with the
, q,: depth of highly stressed area at fillets.
c2f The copies of Nippon Kaiji Kyokai Rule " Rules and Detailed l {
Rules for Diesel Engine Crankshafts and Those Explanations" and the latest IACS's draft " Rules for the Calculation of Crankshafts for Diesel Engines" will he sent by a separate mail.
I As we do not have NKK's rule book " Rules for the Survey GenN3ee< and Construction of Steel Ships", I recommend you to contact g.S n b or.-- Q with NKK's New York office. The address is:
p Nippon Kaiji Kyokai ,
. 17 Battery Place, Room No.210, lF we this Guevrwu. New York, N.Y. 10004 1; CKAYJ19,R.
Please note that the IACS's draft mentioned above was editted bacing on CIMAC proposal " Rules on Calculation of l
l l
4
._- _ . - - _ = . _ _ _ __ . . _ _ . _ _
m-
., k l + DEDBE STEEL LTD., TAKASACO PLANT
. t
~
Crankshafts for Diesei Engines (4.Draf t) " and is still under discussion among IACS members and between- CIMAC and IACS.
If you are interested in the detailed discussions on this matter, I recommend - you to' contact with Dr. Gunter Donath
~ho w is the chairman of CIMAC Sub Group " Crankshaft Dimentions".
y
- - 31s address is % -~
,A s:
1 MASHINENFABRIU AUGSBURG-NUERNBEP.G AG ,, tJ : ,
Abt. MEM A 5
" D-8900 Aug'sburg 1 s
Stadtbachstr. 1 Postfach 10 00 GO , .
/,
- West Germany, ,
3 .
e Tel. (0821)322-3711 y :
- s. Telex 53i$60-533154 TCv
, i i
Cordially,
- s. [k, h'h inpei Dench s \ Senior Researcher
^
Technical Department Steel Casting and Forging Division
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