ML20024B270
| ML20024B270 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 11/21/1978 |
| From: | Montgomery R BABCOCK & WILCOX CO. |
| To: | Oelkers E BABCOCK & WILCOX CO. |
| References | |
| TASK-11, TASK-GB GPU-2406, NUDOCS 8307080151 | |
| Download: ML20024B270 (8) | |
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l Refere:ces: 1)
.Mc:c, Ro;2: y::: o=ary to 31stribu: ion, "I*pdste:i A=:ici;s:ed Tr::siests
- ifs:orial Irperience",
File !;o. S45-753fr-01, July 11,1973.
2)
T. L. Levertas, Jr., J. !!. T. ores, R. C. Ird:can, G. f. Lelleuche, ".*,F.ca;;;aissi ? art ill Tre-quency of.uticips:ed T: :.sients", I??.I ;u:.ber
- ?-031,.Iuly,1-73, Sec: ion 4.
N L
An seslysis has bee: =s.'.e es:ablishis:; the frequency of events ;cr yest for Loss of Teed s:er (* 0.~O,1. :s of le::rics1 ?cvar (LO"Ji, and Turbi:'e/ Genera-p tor I:inegd L-tri;s aheve 0~
25': SM, sud 73'; pcver (Tables 1. 2, and 3).
i Ths esicula:ia s ve:e =sde usi
- he ds:a is T.cierence 1 chove the specific
- cver level 4 for 10Ti", I.C',?, and Turb./An. Induced "tx 7
- ips (Tables 17,13, K.s.c sad 21 cf Ecfaran:e 1) and dividin; :h : nu-J:er by the total : ':e: Of b D'
- years up to 7/15/75 (!:.ble 10 of 2efere=:e 1).
~hese esicula:iens trcre =de N.' ^
for trips occur-ins frc= the dsta of firs: : rip to 7/13/73 and f :.2 :he es:e Q.,
c,f Co = sic,.sl c*:ers:J, n :3
./...., 0.
s AJ/
I :-
Tables 4, 5, s.d 5 co.: sis ' req c=cy. predic:fons fer ~.0 yests of Rx eperstien b.ased on previous experi. nee.
!hese resul:s vare ce:pu cd co siderin.; :1::
tr.nsie== freq:= cy decressus af u r the initial period ei verki=g cut ort. s-tions1 sad equip:c= ;.reble s, Th.2 40 yes: er n eted frequ2 cy ss cc=pu:cd
[
as the ci 2 vo!,hte
- svar:p of initial fraq:eccy hsed on the first year of co. : rcial o;erstien :n1 the frequency frc: su n ess.est years of operation.
[-
This ;rct.edurc was i==lczen:ed in Raference 2 (Sectica I.1.3) using the pec-
?
dicted tra:sie-.t equs:f on I(transient frequer.cy) = Iyear 1 frequency + 39s (other. vest s swrsp)I. i !.0.
Tabulstiens varc.sde in a si=ils ranner initic:!=;; the date of first trip threep the da:e :cr=inctin; c:e yest of co _ercial oper.*tien as the year c=e f cqa.cy.
All da:s u:ed for esicula-i ticas is con: sited is tne references cc=:!cccd above.
v i
Tine esiculations it. tisis ce=o have becs revieved for accuracy.
g_.
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8307080151 781121 PDR ADOCK 05000289 8'
i-
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s.
7 N
t
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t _-
8
.9 a$0r f Loss of Feedester Frequency 3: sed oa
.' =.r ;
Table 1.
Current ExN:lence, (crents/Ex. vr.)
4 i-O Fros Oste of Co=erics1 Operatios i
t Fr0= Oste of First Trip
~
to 7/15/78 W.
to 7/13/73 9
Discri=inated i
Discri=instad Dats" l
D.ita?
Pover 44 Above 02 1.53 1.18
.6S Above 25:
1.C3
.75
.60 44
.23 Above 502 0.50
.25
.20
.16 Above 752
.22
.11
.Osts ali=i=sted that hsd parenthetiest co=ent 2:ote:
' in Table 1 of Reference 1.
I.oss of Elcetrical Fever Frequency Essed Table 2.
ieventsI?.x..r.)
en curren: Ex-erience.
Fro Oste of Co=erci.21 Operstien '
Fre:.-Date of First Trip to 7/15/73 to 7/15/73 Discri=inste:1
,,.;,7 Discri=i'.-sted se Data-r :..,.
W gg D2es-w., -w '.
~.M.i Pever
...4
.16 Above 02 47
.29
.28 f
,1. '..
-a Y4
.28
..16 gr Above 252
.39
.25 Above 502
.25
.14 t
.24
.12 s
[
.12 Above 752
.1S
.11
.20 trata eli=insted that had parenthetical co==ent 2ote:
in Table 2 of F.eference 1.
r Turbice/Cescrator Induced Rx Trips Trequency L
(event :/Rx. vr.)
Table 3.
3ssed on Current Exserience.
e Fro: Date of Co=erical Operation E
Frc= Date of First Trip to 7/15/78 to 7/15/73 Discri inated Discri=insted i
g Dars Dats?
?over
.96
.30 t.bove 02 1.22
.97
. 72')
.34 Above 252 1.01
.86 v
.72
.64 Above 002
.33
.72
.64
.56 I
At. ave 742
.63
.57 i a.e as above - in T..le 5 if 2u~cre. ice 1.
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^O r e Table 4.
I.oss of Teed.ater Frequency Frediction for 40 vrs. (e.ents /h.
r.)
b"sI DATE OF FIRST TRIP DATT. OF CO:22?.CI AL OPC.\\TIO:;
i Discriminated DIscrir.insted Datst Dats' t
35 9
2'O 5
11 9
8 5
9.25 + 39(L,,.,)
9.,S + 39(,i.,)
--- + 39(17..)
- + 39(17.4) 7
/.bove 40 40 40 40 G7
=.60 I.35
=.54
=.31 7
19 4
11 7
9 4
23 e
9 33 + 39(,7 '.)
o ',5 + 3 9 ( *"- ' )
-'i
- 39(17 )
T + 39(17'4)
~
Abosa 40 40 40 40 g
=.45
=.2S
=.43
=.25 10 3
6 8
3 5
2 9.25
- 9(17. '.)
7.25 39(17I4}
'i
'(17.4)
I + 9'(17.4)
+
40 40 40 g
40
=.20
=.20
=.13
,,33
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1 2
D' '
3 3
1 2
7 3-
- + 39(17.4) 2 9.25 + 39(17.4) 9.25 + 39(17.4) 7 + 39(17.4) 7 a-Above 4G 40 40 40 75.
=.1S.
=.11
=.18
=.12
~.
- c Note: 'Dats c15=inated that had patenthetical co=ent in Table 1 of Reference 1.
=
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t Table 5.
Loss of Electrics 1 ?over Frequency Prediction d.. t for 40 yrs. (events /Rx. yr.)
I. Q f,f
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g 4,
- DATE 01~ FIRST TRIP DATE OF CO:2ERCI AI. C?E?ATIC::
Q i
Discri=inated Discrf=insted r
D., c ar Dats' h
+
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5 2
4.# 39 (..,1_)
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2
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1s.4 e
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9.25 s
d'*'
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[
Ou.
.19
=.13
=.18
=.12
=
S 3
5 4
3-2 9.25 + '9(17.4) 9.2 5 + 39(17. 4) -
- + 39(1s.4) 2 + 39(17.4)
L 7
7 Above 40 40 40 40 25.,.
.19
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=.18
=.12
=
9 4
3 s
3 3
2 9.25 + 3?(17.4) 9.25 + 39(17.4)
- + 39(17.4) 1 ' 39(17.4) 7 7
Abova 40 40 40 40 r.
50.
.13
=.12
=.18
=.12
=
2 3
1 2)
N' 9..,5 + 39(17.43) 1 2
.7
+ 39(3.7.4)
- + 39(1.
+ 39(1,,'. )
,,,).
,.a Above 40 40 do 40
=
15%
.18
=.11
=.18
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=
y i ata clininsted that had parenthetical Co=cn: in 7t.,ble 2 D
Note:
of Reference 1.
t-L w
.t C
I v
t' L.
+
b r
r' b
k P
~
w,-.
A. m.w.
- z
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a y Table 6.
Turb i :a/Ocna rc:Or Enductd h Tri; s Fre uency
- .9 '(
Pred t.:t ion for 10 yrs. (eec. s/Ex. yr.)
- g,}
.~t
- QI rl 1m
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- DATE 01' FII::a TRI?
DATE OF CG: CML!,u. Gri.4XilG::
DI::cri :inated Discrl=inated
'f Q Oatat Datat i
o 10 to 9
r,. g. + 39(3,..)
9...3 * '19(;i.-.)
-- + 39 (.11 ). j. -
y + 39 (po. <)
19 11
's -
7
.s 04.
40 40 40 40
=.65
=.54
=.67
=.p5 18 17 6
11 11 6
- h..,. i + 39 (,.8 )
- r... :)- + 39 (T. :..,-)
- J + 39 (.u.S ) 5 + 39(y,s..)
s 40 40 40 40 23r
. 50
=.33
=.49
=.38
=
L 10 + 39(17..,.)
6 10 7
15 7
14 39(.6...)
, + 39(1,.4)
- 9..,5 + 39 ( t e:-. )
4-7 9..)
nhovs 40 40 40 40 >
50.
43
=.37
=.43
=.37
=
7 6
S 7
A 6
11 7
10 A
- + 39(,7.4)
~ + 39(3.... )
39(17.4,)
- 9.,5 + 39 (,.,.' )
7
+
7 3-
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Abo:e 40 40 40 40 L,.
.42
=.36
=.42
=.36 y,
=
e I ata eli=ina:cd that had p:rer.thetical co.:ect in Table 5 D
Note:
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