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=Text= | =Text= | ||
{{#Wiki_filter:. | {{#Wiki_filter:. | ||
I g | |||
I | ; VERMONT YANKEE 1 8X8 FUEL FAILURE INVESTIGATION j l , | ||
g | |||
; VERMONT YANKEE 1 | |||
8X8 FUEL FAILURE INVESTIGATION j | |||
l , | |||
\ | \ | ||
PURPOSE: REVIEW OF INVESTIGATION OF THE VERMONT YANKEE 8X8 FUEL FAILURES BY ACCELERATED CORROSION | PURPOSE: REVIEW OF INVESTIGATION OF THE VERMONT YANKEE 8X8 FUEL FAILURES BY ACCELERATED CORROSION SCOPE: | ||
SCOPE: | |||
REVIEW: | REVIEW: | ||
e SITE OBSERVATIONS MAJOR INVESTIGATIVE. ACTIVITIES | e SITE OBSERVATIONS MAJOR INVESTIGATIVE. ACTIVITIES e | ||
e | |||
e FUEL EXPERIENCE , | e FUEL EXPERIENCE , | ||
- HWT 12/11/79 I . | - HWT 12/11/79 I . | ||
8ociosotG | 8ociosotG | ||
-- - ~ . .. | -- - ~ . .. | ||
9 i .u SITE OBSERVATIONS e 0FFGAS HISTORY e SIPPING RESULTS e SITE INSPECTIONS AND RESULTS HWT 12/11/79 9 | |||
9 i .u | |||
SITE OBSERVATIONS | |||
e 0FFGAS HISTORY | |||
e SIPPING RESULTS e SITE INSPECTIONS AND RESULTS | |||
HWT | |||
12/11/79 9 | |||
l | l | ||
.. FULL POWER SJAE OFFGAS vCI/SEC | .. FULL POWER SJAE OFFGAS vCI/SEC | ||
~ - | ~ - | ||
e, o. | e, o. | ||
m j iiil I l l l 1 I I I I I | m j iiil I l l l 1 I I I I I | ||
<- 3 | <- 3 | ||
- n | - n | ||
: 3 s | |||
: 3 | |||
s | |||
M c_ | M c_ | ||
M - | M - | ||
M - | M - | ||
c_ | c_ | ||
~ | ~ | ||
u, | u, f < | ||
f < | |||
* LEAKERS (RELOAD 3) o | * LEAKERS (RELOAD 3) o | ||
_N | _N a | ||
z m + | |||
em s* | |||
m + | |||
em | |||
s* | |||
X A | X A | ||
c_ | c_ | ||
n ' | n ' | ||
i 2 ' | i 2 ' | ||
* LEAKERS (RELOAD 3) | * LEAKERS (RELOAD 3) | ||
~> ; | ~> ; | ||
4 - | 4 - | ||
*= - | *= - | ||
l l | l l | ||
c_ | c_ | ||
i | i | ||
- c- | - c-v , | ||
v , | |||
p I | p I | ||
. I | . I t.- =x en 1 | ||
t.- =x en | |||
1 | |||
; a | ; a | ||
* LEAKER (RELOAD 3) | * LEAKER (RELOAD 3) | ||
, i i i i -i i i i ! i i i i , l i | , i i i i -i i i i ! i i i i , l i | ||
e see o e o e. **e h e ***NN** *' | e see o e o e. **e h e ***NN** *' | ||
. . . - a - .- _ -- | . . . - a - .- _ -- | ||
'*- j | '*- j | ||
+=_ .~ N | +=_ .~ N | ||
-n -- | -n -- | ||
VERMONT YANKEE 8X8 OPERATIONAL , HISTORY i | |||
FUEL BUNDLES LEAKER CYCLE l TYPE RELOAD INCORE BUNDLES 3 7X7R 1 40 8X8 2 328 4 7X7R 1 40 8X8 2 192 8X8 3 136 5 7X7R 1 40 8X8 2 108 , | |||
VERMONT YANKEE 8X8 OPERATIONAL , HISTORY | 8X8 3 136 g 8X8 4 84 5 6A 7X7R 1 24 8X8 2 36 = | ||
8X8 2 192 8X8 3 136 5 7X7R 1 40 | |||
8X8 2 108 , | |||
8X8 3 136 g 8X8 4 84 5 | |||
6A 7X7R 1 24 8X8 2 36 = | |||
8X8 3 128 $ | 8X8 3 128 $ | ||
SX8 4 84 | SX8 4 84 | ||
. 8X8R 5 96 (36 8X8) 6B 7X7R 1 24 8X8 2 120 8X8 3 44 8X8 4 84 8X8R 5 96 (36 8X8) | . 8X8R 5 96 (36 8X8) 6B 7X7R 1 24 8X8 2 120 8X8 3 44 8X8 4 84 8X8R 5 96 (36 8X8) | ||
O | O | ||
. HWT 12/11/79 | . HWT 12/11/79 | ||
LEAKER LOCATIONS FOR VERMONT YANKEE CYClF IA.- | LEAKER LOCATIONS FOR VERMONT YANKEE CYClF IA.- | ||
i | i COMPANY PROPRIETARY CDs9CW'LOCAT105 | ||
COMPANY PROPRIETARY | |||
- g LFtM 1ACAT105m au Tu(naamn u Q Utp LDCAftDa (L2TTn DIDICATO y 11P MACB1W1) | - g LFtM 1ACAT105m au Tu(naamn u Q Utp LDCAftDa (L2TTn DIDICATO y 11P MACB1W1) | ||
$ lan LacATION , | $ lan LacATION , | ||
. 31 4 mM socATi ,, | . 31 4 mM socATi ,, | ||
$ SOLWI taCAT3DE II | $ SOLWI taCAT3DE II u | ||
82 LEAKERS $19.5 GWD/MT Hb7 : | |||
Ti) ORB 'iftylf^2.Y@uo 22/11/79 3 rLUllM dubnblJe , . , , , . ,, ,, ,, , , , . . , | |||
Hb7 : | |||
Ti) ORB 'iftylf^2.Y@uo 22/11/79 3 | |||
rLUllM dubnblJe , . , , , . ,, ,, ,, , , , . . , | |||
' - . LEAKER LOCATIONS FOR VERMONT YANKEE - | ' - . LEAKER LOCATIONS FOR VERMONT YANKEE - | ||
CYCLE 5 | CYCLE 5 | ||
_i l | |||
_i | |||
l | |||
1 l | 1 l | ||
COMPANY PROPRIETARY i | |||
COMPANY PROPRIETARY | g uw tocattow (cowcw tacattow u m Au. nr ucm:wTs> | ||
i | |||
y i | y i | ||
Q up tacAftes (trTT11 DtDICAfts TIF MCalWr) y l . | Q up tacAftes (trTT11 DtDICAfts TIF MCalWr) y l . | ||
. $ lam tacATION 31 | . $ lam tacATION 31 l 4 := lacAni= | ||
l 4 := lacAni= | |||
82 i | 82 i | ||
* sons Enos u | * sons Enos u u | ||
u | |||
" 1 LEAKERS ~17.7 GWD/MT 8 | " 1 LEAKERS ~17.7 GWD/MT 8 | ||
@]l b rW qin $11/79 . ., | @]l b rW qin $11/79 . ., | ||
Line 248: | Line 107: | ||
/M- - | /M- - | ||
i . i. i. u u o . | i . i. i. u u o . | ||
o. | o. | ||
LEAKER LOCATION FOR | LEAKER LOCATION FOR | ||
' VERMONT YANKEE CYCLE 6B i | |||
' VERMONT YANKEE | 9 COMPANY PROPRIETARY r | ||
CYCLE 6B i | |||
9 | |||
COMPANY PROPRIETARY | |||
r | |||
( j g 1/ 2 LOCAT10w (tDeew'LOCATICW () ; | ( j g 1/ 2 LOCAT10w (tDeew'LOCATICW () ; | ||
FOR All T1P MAChthf 4) ' ) | FOR All T1P MAChthf 4) ' ) | ||
,3 j' j (LETTER INDICAfts | ,3 j' j (LETTER INDICAfts Q LPU f1r LDCAT10k MACHINE) 35 e stM LaCAfton A StM W AT10W 23 | ||
Q LPU f1r LDCAT10k MACHINE) 35 e stM LaCAfton A StM W AT10W 23 | |||
$ SenltC1 LACATION " - | $ SenltC1 LACATION " - | ||
a | a n, I a LEAKERS ~24 BIL/MT 7 . | ||
n, I a LEAKERS ~24 BIL/MT 7 . | |||
1 z | 1 z | ||
' J WT i eianunmuuo gjgf7g u h. Il | ' J WT i eianunmuuo gjgf7g u h. Il | ||
VERMONT YANKEE SITE INSPECTIONS i | VERMONT YANKEE SITE INSPECTIONS i | ||
e INSPECTIONMETHODS | e INSPECTIONMETHODS e NON-DESTRUCTIVE TESTING (NDT) | ||
COMPANY PROPRIETARY e VISUAL e SITE INSPECTIONS e POST E0C-5 0UTAGE (NOVEMBER 1978) | |||
e NON-DESTRUCTIVE TESTING (NDT) | COMPANY PROPRIETARY FUEL RETRIEVAL FOR HOT CELL EXAM e POST E0C-6A OUTAGE (APRIL 1979) | ||
_ COMPANY PROPRIETARY CRUD SAMPLING e E0C-6B OUTAGE (0CTOBER 1979) | |||
COMPANY PROPRIETARY | - COMPANY PROPRIETARY HWT | ||
e VISUAL e SITE INSPECTIONS e POST E0C-5 0UTAGE (NOVEMBER 1978) | |||
COMPANY PROPRIETARY | |||
FUEL RETRIEVAL FOR HOT CELL EXAM | |||
e POST E0C-6A OUTAGE (APRIL 1979) | |||
_ COMPANY PROPRIETARY | |||
CRUD SAMPLING | |||
e E0C-6B OUTAGE (0CTOBER 1979) | |||
- COMPANY PROPRIETARY | |||
HWT | |||
; 12/11/79 l | ; 12/11/79 l | ||
i l | |||
i | |||
l | |||
.. l l | .. l l | ||
VERMONT YANKEE FUEL INSPECTION 8 X 8 LATTICE , I o | |||
A B C DE F G H 1 T T 2 RELOAD 3, 4 (8D274) | |||
VERMONT YANKEE FUEL INSPECTION 8 X 8 LATTICE , I | |||
GD - l 3 T , g3 T . | GD - l 3 T , g3 T . | ||
l 4 B 5 | |||
l | |||
4 B 5 | |||
6 T T 7 Go- Go 8 | 6 T T 7 Go- Go 8 | ||
T T A BC D E FG H 1 T T 2 | |||
T T | |||
A BC D E FG H | |||
1 T T 2 | |||
3 T Go T 4 Go 5 | 3 T Go T 4 Go 5 | ||
RELOAD 2 (8D219) 6 7 Go- T | RELOAD 2 (8D219) 6 7 Go- T | ||
. 7 8 T T | . 7 8 T T T = TIE RODS ur 12/11/79 i | ||
T = TIE RODS ur 12/11/79 | |||
i | |||
- e VERMONT YANKEE E0C 5 SITE INSPECTION RESULTS | |||
- e | |||
VERMONT YANKEE E0C 5 SITE INSPECTION RESULTS | |||
.c | .c | ||
. (NOVEMBER 1978) | . (NOVEMBER 1978) e RELOAD 3 INSPECliON e | ||
e RELOAD 3 INSPECliON | |||
e | |||
COMPANY PROPRIETARY e | COMPANY PROPRIETARY e | ||
e e | e e | ||
e RELOAD 2 INSPECTION e | |||
e RELOAD 2 INSPECTION | COMPANY PROPRIETARY HWT | ||
HWT | |||
_ 12/11/79 | _ 12/11/79 | ||
. 9 e | . 9 e | ||
VER110NT YANKEE FUEL INSPECTION R0D FAILURE LOCATIONS E0C 5 a | |||
VER110NT YANKEE FUEL INSPECTION | |||
R0D FAILURE LOCATIONS E0C 5 | |||
a | |||
A B C D | A B C D | ||
- E F y 1 G 1 1 H | - E F y 1 G 1 1 H | ||
T 3 | T 3 | ||
i i 7 ; | i i 7 ; | ||
2 1 1 - | 2 1 1 - | ||
f | f 3' f ! ' | ||
I l 4 i L_ T 1 j f ! ! , | |||
3' f ! ' | |||
I l 4 i L_ T 1 j | |||
f ! ! , | |||
4'! ! T I | 4'! ! T I | ||
t t 5 f f { | t t 5 f f { | ||
( | ( | ||
E i | E i | ||
. 1 | . 1 T t i | ||
T t i | |||
' t I ; I T 7 I I ' | ' t I ; I T 7 I I ' | ||
1 ; , | 1 ; , | ||
i i | i i 8 , | ||
8 , | |||
' i | ' i | ||
'- 1 , | '- 1 , | ||
T ' | T ' | ||
! T - | ! T - | ||
---- FAILED RODS HRT 12/11/79 | ---- FAILED RODS HRT 12/11/79 | ||
A | A | ||
: LIFTING BALE | : LIFTING BALE 8 X 8 FUEL BUNDLE , , | ||
8 X 8 FUEL BUNDLE , , | |||
CONFIGURATION """h i s0-UPPER TIE PLATE | CONFIGURATION """h i s0-UPPER TIE PLATE | ||
> PLENUM i | > PLENUM i | ||
Line 449: | Line 180: | ||
#6 i e- 121.3" - | #6 i e- 121.3" - | ||
#5 i i- 1 01 .1 " | #5 i i- 1 01 .1 " | ||
a | a | ||
#4 I i ,81 .0" COMPANY PROPRIETARY | #4 I i ,81 .0" COMPANY PROPRIETARY | ||
#3 I i- 60.8" | #3 I i- 60.8" | ||
#2 I i- 40.7" | #2 I i- 40.7" re i- 20.5" SPACERS l#1 , | ||
j j". | |||
re i- 20.5" | |||
SPACERS l#1 , | |||
j | |||
j". | |||
i LOWER TIE PLATE _ | i LOWER TIE PLATE _ | ||
sui // | sui // | ||
HWT 12/11/79 | HWT 12/11/79 | ||
* l l | |||
VERMONT YANKEE FUEL R0D RETRIEVAL FOR HOT CELL EXAM E0C 5 2 | |||
* l | |||
l | |||
VERMONT YANKEE FUEL R0D RETRIEVAL FOR | |||
HOT CELL EXAM | |||
E0C 5 2 | |||
l i | l i | ||
~ | ~ | ||
Line 490: | Line 197: | ||
e SOUND AND FAILED RODS e NUCLEAR BURNUP BENCHMARK e RODS SELECTION e COMPANY PROPRJETARY e PREDOMINATELY SOUND RODS , | e SOUND AND FAILED RODS e NUCLEAR BURNUP BENCHMARK e RODS SELECTION e COMPANY PROPRJETARY e PREDOMINATELY SOUND RODS , | ||
e CASK SHIPMENT TO HOT CELL (MARCH 1979) | e CASK SHIPMENT TO HOT CELL (MARCH 1979) | ||
HWT. | HWT. | ||
12/11/79 | 12/11/79 | ||
VERMONT YANKEE | VERMONT YANKEE | ||
.J | .J | ||
, E0C 6A SITE INSPECTION RESULTS | , E0C 6A SITE INSPECTION RESULTS | ||
: (APRIL 1979) | : (APRIL 1979) e RELOAD 3 INSPECTION e | ||
COMPANY PROPRIETARY e | |||
e RELOAD 3 INSPECTION | |||
e CRUD SAMPLING - | e CRUD SAMPLING - | ||
e 1 Go ROD, 5 UO2 RODS ,, | e 1 Go ROD, 5 UO2 RODS ,, | ||
i | i i | ||
HWT l 12/11/79 ! | |||
t l | |||
i | |||
HWT l | |||
12/11/79 ! | |||
t | |||
l | |||
,i L_ _. | ,i L_ _. | ||
VERMONT YANKEE FUEL INSPECTION R0D FAILURE LOCATIONS E0C 6A j - | |||
VERMONT YANKEE FUEL INSPECTION R0D FAILURE LOCATIONS | |||
E0C 6A j | |||
'A B C D E F G H I | 'A B C D E F G H I | ||
T T | T T | ||
2 | 2 3 | ||
3 | |||
7 T | 7 T | ||
4 I . | 4 I . | ||
5 | 5 6 | ||
T T | |||
l 8 _ | |||
T T FAILED RODS (SUSPECTS NOT INCLUDED) HWT 12/11/79 | |||
8 _ | |||
T T | |||
VERMONT YANKEE. FUEL INSPECTION-R0D FAILURE LOCATIONS | VERMONT YANKEE. FUEL INSPECTION-R0D FAILURE LOCATIONS | ||
'i TOTAL - | 'i TOTAL - | ||
'A B C D E F G H , | 'A B C D E F G H , | ||
1 T | 1 T | ||
T | T 2 | ||
i i | |||
i | |||
3 T | 3 T | ||
T | T 4 | ||
5 T | |||
T 7 | |||
8 - | |||
T | |||
T T . | T T . | ||
FAILED RODS Hk7 . | |||
12/11/79 - | 12/11/79 - | ||
~- | ~- | ||
C | C VERMONT YANKEE i E0C 6B INSPECTION RESULTS | ||
.' (OCTOBER 1979) e RELOAD 4 INSPECTION e | |||
SELECTED RODS IN 3 SOUND BUNDLES e | |||
VERMONT YANKEE i | |||
E0C 6B INSPECTION RESULTS | |||
.' (OCTOBER 1979) e RELOAD 4 INSPECTION | |||
COMPANY PROPRIETARY e | COMPANY PROPRIETARY e | ||
CRUD SAMPLES FROM SELECTED Go AND U0 2 RODS | CRUD SAMPLES FROM SELECTED Go AND U0 2 RODS HWT 12/11/79 i | ||
l | |||
HWT 12/11/79 | |||
VERMONT YANKEE SITE INSPECTION | VERMONT YANKEE SITE INSPECTION | ||
==SUMMARY== | ==SUMMARY== | ||
e | e o . RELOAD 3 FUEL INSPECTION e | ||
e COMPANY PROPRIETARY e | |||
o . RELOAD 3 FUEL INSPECTION e | l e OTHER VEPEONT YANKEE 8X8 RELOADS e RELOAD 2 - PROBLEM NOT OBSERVED, o RELOAD 4 - PROBLEM NOT OBSERVED e OTHER ACTIVITIES e CRUD SAMPLING i e FUEL RETRIEVAL FOR HOT CELL RWT | ||
e COMPANY PROPRIETARY | |||
e OTHER VEPEONT YANKEE 8X8 RELOADS | |||
e RELOAD 2 - PROBLEM NOT OBSERVED, o RELOAD 4 - PROBLEM NOT OBSERVED | |||
e OTHER ACTIVITIES e CRUD SAMPLING i | |||
e FUEL RETRIEVAL FOR HOT CELL | |||
RWT | |||
: 12/11/79 l l | : 12/11/79 l l | ||
W:.. - | W:.. - | ||
t.~ | t.~ | ||
Line 649: | Line 261: | ||
MAJOR INVESTIGATIVE ACTIVITIES , | MAJOR INVESTIGATIVE ACTIVITIES , | ||
~ | ~ | ||
l | l e MANUFACTURING e HOT CELL e WATER CHEM STRY e ANALYTICAL EVALUATIONS HWT 12/11/79 | ||
e MANUFACTURING | |||
e HOT CELL e WATER CHEM STRY | |||
e ANALYTICAL EVALUATIONS | |||
HWT | |||
12/11/79 | |||
= -_ - _ _ _ | = -_ - _ _ _ | ||
VERMONT YANKEE MANUFACTURING REVIEW ACTIVITIES e DETAILED RECORD SEARCH (NOVEMBER 1978 FIELD DATA) e PRODUCTION STEPS e TIME OF FABRICATION e POTENTIAL OUT-0F-SPECIFICATION CONDITIONS e STATISTICAL COMPARISONS e SOURCE MATERIAL e MANUFACTURING LOTS | |||
VERMONT YANKEE | |||
MANUFACTURING REVIEW ACTIVITIES | |||
e DETAILED RECORD SEARCH (NOVEMBER 1978 FIELD DATA) | |||
e PRODUCTION STEPS | |||
e TIME OF FABRICATION e POTENTIAL OUT-0F-SPECIFICATION CONDITIONS | |||
e STATISTICAL COMPARISONS e SOURCE MATERIAL | |||
e MANUFACTURING LOTS | |||
;Q e SPARE RCD TESTS , | ;Q e SPARE RCD TESTS , | ||
r e NON-DESTRUCTIVE / DESTRUCTIVE EXAM e COMPANY PROPRIETARY l | r e NON-DESTRUCTIVE / DESTRUCTIVE EXAM e COMPANY PROPRIETARY l | ||
Line 689: | Line 271: | ||
12/11/79 l | 12/11/79 l | ||
. i I | . i I | ||
v + r | v + r e--- -w n --- w -v , - | ||
e--- -w n --- w -v , - | |||
4 + m n | 4 + m n | ||
{ ,. . | { ,. . | ||
VERMONT YANKEE MANUFACTURING REVIEW DETAILED RECORD SEARCH RESULTS e RECORDS FOR FAILED RODS , | VERMONT YANKEE MANUFACTURING REVIEW DETAILED RECORD SEARCH RESULTS e RECORDS FOR FAILED RODS , | ||
'e FUEL ROD / CLADDING / PELLETS e MATERIAL / PROCESS CHANGES e INSPECTION REPORTS / MATERIAL REVIEW BOARD ACTION | 'e FUEL ROD / CLADDING / PELLETS e MATERIAL / PROCESS CHANGES e INSPECTION REPORTS / MATERIAL REVIEW BOARD ACTION e COMPANY PROPRIETARY s RECORD SEARCH RESULTS e FAILURES DID NOT CORRELATE WITH: | ||
e COMPANY PROPRIETARY s RECORD SEARCH RESULTS e FAILURES DID NOT CORRELATE WITH: | |||
~ | ~ | ||
COMPANY PROPRIETARY | COMPANY PROPRIETARY e | ||
I HWT 12/11/79 | |||
e | |||
I | |||
HWT 12/11/79 | |||
VERMONT YANKEE RELOAD 3 e | |||
COMPANY PROPRIETARY O | |||
no 9 | |||
VERMONT YANKEE RELOAD 3 | |||
e | |||
1 | 1 | ||
4 VERMONT YANKEE RELOAD 3 1 | |||
4 | |||
VERMONT YANKEE RELOAD 3 1 | |||
9 i | 9 i | ||
COMPANY PROPRIETARY 4 | |||
COMPANY PROPRIETARY | |||
4 | |||
e | e | ||
.HWT 12/11/79 | .HWT 12/11/79 | ||
VERMONT YANKEE MANUFACTURING REVIEW i | VERMONT YANKEE MANUFACTURING REVIEW i | ||
S e | S e | ||
COMPANY PROPRIETARY | COMPANY PROPRIETARY Se e | ||
Se e | |||
HWT 12/11/79 | HWT 12/11/79 | ||
~ | ~ | ||
': i s VERMONT YANKEE k} | ': i s VERMONT YANKEE k} | ||
l 9 | l 9 | ||
POTENTIAL CONTAMINATION REVIEW 4 | POTENTIAL CONTAMINATION REVIEW 4 | ||
e : SELECTIVE FAILURE SUGGESTIVE OF POTENTIAL CONTAMINATION | e : SELECTIVE FAILURE SUGGESTIVE OF POTENTIAL CONTAMINATION o | ||
MANUFACTURING PROCESS REVIEW 1 | |||
e ANALYTICAL TESTING - | e ANALYTICAL TESTING - | ||
* e CONIAMINATION REVIEW RESULTS e ~ | * e CONIAMINATION REVIEW RESULTS e ~ | ||
NO EVIDENCE DEVELOPED TO SUGGEST CONTAMINATION DURING FABRICATION e ANALYSES (AUGER /SIMS) | NO EVIDENCE DEVELOPED TO SUGGEST CONTAMINATION DURING FABRICATION e ANALYSES (AUGER /SIMS) | ||
COMPARISON OF SPARE RODS TO SIMILAR VINTAGE RODS AND CURRENT PRODUCTION 9 | |||
COMPARISON OF SPARE RODS TO SIMILAR VINTAGE RODS AND CURRENT PRODUCTION | COMPANY PROPRIETARY COMPANY PROPRIETARY HWT 12/11/79 m .. _h. m, . . . . , . _- _ | ||
COMPANY PROPRIETARY | |||
HWT | |||
12/11/79 | |||
m .. _h. m, . . . . , . _- _ | |||
C. _ . . _ .c . . - , - . | C. _ . . _ .c . . - , - . | ||
VERMONT YANKEE MANUFACTURING REVIEW j l | VERMONT YANKEE MANUFACTURING REVIEW j l | ||
: SPARE R0D TESTS l | : SPARE R0D TESTS l | ||
, i e AVAILABLE MAN.FACTURED SPARE RODS | , i e AVAILABLE MAN.FACTURED SPARE RODS e 2 RODS FROM DWZO2 e 1 R0D FROM DWZ05 . | ||
e EXAMINATIONS PERFORMED e NJN-DESTRUCTIVE / DESTRUCTIVE EXAMINATIONS e COMPANY PROPRIETARY e EXAMINATION RESULTS , | |||
e 2 RODS FROM DWZO2 e 1 R0D FROM DWZ05 . | e NO SIGNIFICANT DEVIATIONS FROM SPECIFICATIONS PELLETS / CLADDING /END PLUG / FILL GAS o | ||
e EXAMINATIONS PERFORMED e NJN-DESTRUCTIVE / DESTRUCTIVE EXAMINATIONS | COMPANY PROPRIETARY HWT 12/11/79 | ||
e COMPANY PROPRIETARY | |||
e EXAMINATION RESULTS , | |||
e NO SIGNIFICANT DEVIATIONS FROM SPECIFICATIONS | |||
PELLETS / CLADDING /END PLUG / FILL GAS | |||
HWT | |||
12/11/79 | |||
l VERMONT YANKEE ! | l VERMONT YANKEE ! | ||
l > | l > | ||
MANUFACTURING REVIEW | MANUFACTURING REVIEW | ||
==SUMMARY== | ==SUMMARY== | ||
j | j l l e RECORD SEARCH ' | ||
e NO DEFINITE CORRELATION TO ANY SPECIFIC PARAMETER e ENGINEERING SPECIFICATIONS M'ET e | |||
COMPANY PROPRIETARY e | |||
e SPARE RODS e NO SIGNIFICANT DEVIATIONS FROM SPECIFICATIONS e COMPANY PROPRIETARY , | |||
l l e RECORD SEARCH ' | |||
e NO DEFINITE CORRELATION TO ANY SPECIFIC PARAMETER e ENGINEERING SPECIFICATIONS M'ET | |||
e SPARE RODS | |||
e NO SIGNIFICANT DEVIATIONS FROM SPECIFICATIONS | |||
e COMPANY PROPRIETARY , | |||
HhT 12/11/79 | HhT 12/11/79 | ||
+ vaso ww. e. , , .,,--s -- - e , ~ | + vaso ww. e. , , .,,--s -- - e , ~ | ||
VERMONT YANKEE HOT CELL EXAM e FUEL R0D DATA e 12 RODS RETRIEVED e FAILURE CHARACTERISTICS e NUCLEAR BENCHMARK e EXAMINATIONS , | |||
e NON-DESTRUCTIVE TESTING VISUAL NEUTROGRAPHY PROFILOMETRY GAMMA SCAN e | |||
.. COMPANY PROPRIETARY e DESTRUCTIVE EXAM LEAK CHECK CLADDING ANALYSIS FOR HYDROGEN SECONDARY EMISSION MICROSCOPY (SEM) | |||
VERMONT YANKEE HOT CELL EXAM | METALL0 GRAPHY BURNUP ANALYSIS HWT 12/11/79 | ||
e FUEL R0D DATA | |||
e 12 RODS RETRIEVED | |||
e FAILURE CHARACTERISTICS e NUCLEAR BENCHMARK e EXAMINATIONS , | |||
e NON-DESTRUCTIVE TESTING | |||
VISUAL | |||
NEUTROGRAPHY | |||
PROFILOMETRY | |||
GAMMA SCAN e | |||
.. COMPANY PROPRIETARY e DESTRUCTIVE EXAM | |||
LEAK CHECK | |||
CLADDING ANALYSIS FOR HYDROGEN | |||
SECONDARY EMISSION MICROSCOPY (SEM) | |||
METALL0 GRAPHY | |||
BURNUP ANALYSIS HWT 12/11/79 | |||
w h: | |||
w | 1 VERMONT YANKEE NON-DESTRUCTIVE EXAMINATION i-e VISUAL - | ||
h: | |||
1 VERMONT YANKEE | |||
NON-DESTRUCTIVE EXAMINATION i- | |||
e VISUAL - | |||
PROGRESSIVE CORROSION e NEUTROGRAPHY - | PROGRESSIVE CORROSION e NEUTROGRAPHY - | ||
NO CENTRAL VOIDING | NO CENTRAL VOIDING NO MOISTURE IN GETTER COMPANY PROPRIETARY e PROFILOMETF.Y - | ||
NO CLAD RIDGING COMPANY PROPRIETARY e GAMMA SCAN - | |||
NO MOISTURE IN GETTER | |||
COMPANY PROPRIETARY e PROFILOMETF.Y - | |||
NO CLAD RIDGING | |||
COMPANY PROPRIETARY | |||
e GAMMA SCAN - | |||
NO MAJOR AXIAL BURNUP DISCONTINUITIES e COMPANY PROPRIETARY NNI | NO MAJOR AXIAL BURNUP DISCONTINUITIES e COMPANY PROPRIETARY NNI | ||
.12/11/79 | .12/11/79 1 | ||
1 | |||
VERMONT YANKEE DESTRUCTIVE EXAMINATION j e LEAK CHECK | |||
VERMONT YANKEE DESTRUCTIVE EXAMINATION j | |||
e LEAK CHECK | |||
- CLAD, WELD, END Pi.UG INTEGRITY e CLAD ANALYSIS - | - CLAD, WELD, END Pi.UG INTEGRITY e CLAD ANALYSIS - | ||
SECONDARY HYDRIDING | SECONDARY HYDRIDING e SE - | ||
COMPANY PROPRIETARY e METALL0 GRAPHY NO EVIDENCE OF CENTRAL FUEL VOIDING w FUEL MICROSTRUCTURE CONSISTENT WITH PREDICTED POWERS COMPANY PROPRIETARY e BURNUP ANALYSES GOOD AGREEMENT WITH NUCLEAR . | |||
e SE - | |||
COMPANY PROPRIETARY | |||
e METALL0 GRAPHY | |||
NO EVIDENCE OF CENTRAL FUEL VOIDING w | |||
FUEL MICROSTRUCTURE CONSISTENT WITH PREDICTED POWERS | |||
COMPANY PROPRIETARY | |||
e BURNUP ANALYSES | |||
GOOD AGREEMENT WITH NUCLEAR . | |||
CALCULATIONS . | CALCULATIONS . | ||
HWT 12/11/79 | HWT 12/11/79 | ||
~ | ~ | ||
b COMPANY PROPRIETARY 9 | |||
b | |||
COMPANY PROPRIETARY | |||
9 | |||
e 4 | e 4 | ||
em 9 | em 9 | ||
9 x | 9 x | ||
_ _ _ _ _ ] | _ _ _ _ _ ] | ||
..e & O O | ..e & O O | ||
l l | l l | ||
l i | l i | ||
e e | |||
i l | |||
e | |||
l | |||
' l l | ' l l | ||
COMPANY PROPRIETARY | COMPANY PROPRIETARY o | ||
O 9 | |||
l euB M <* -- e - -, | |||
9 | |||
l | |||
euB M <* -- e - -, | |||
-GENERAL ELECTR;C CO. | -GENERAL ELECTR;C CO. | ||
PROPRIETARY INFORMA VERMONT YANKEE WATER CHEMISTRYliEVIEW 5 | PROPRIETARY INFORMA VERMONT YANKEE WATER CHEMISTRYliEVIEW 5 | ||
l :s REVIEW 0F PLANT RECORDS t | l :s REVIEW 0F PLANT RECORDS t | ||
: e FUEL WARRANTY REPORTS e OPERATING LOGS / CHEMISTRY DATA e WATER TREATMENT SYSTEM OPERATION | : e FUEL WARRANTY REPORTS e OPERATING LOGS / CHEMISTRY DATA e WATER TREATMENT SYSTEM OPERATION e RESULTS OF REVIEW e COMPANY PROPRIETARY e VISUAL / CHEMICAL ANALYSIS OF CRUD, DEPOSITS l | ||
e | |||
e RESULTS OF REVIEW e COMPANY PROPRIETARY | * COMPANY PROPRIETARY 6 | ||
e HWT 12/11/79 l | |||
e VISUAL / CHEMICAL ANALYSIS OF CRUD, DEPOSITS l | |||
COMPANY PROPRIETARY 6 | |||
e HWT 12/11/79 | |||
l | |||
1 l | 1 l | ||
l l | l l | ||
ll t ll | ll t ll | ||
- b | - b C | ||
C | |||
% O V M E P | % O V M E P | ||
A R N M Y O P | A R N M Y O P | ||
Line 1,060: | Line 387: | ||
N D | N D | ||
I F | I F | ||
4* | 4* | ||
1H | 1H | ||
, 2W | , 2W | ||
/T 1 | /T 1 | ||
1 | 1 | ||
/ | / | ||
7 | 7 | ||
. 9 . | . 9 . | ||
b): ', | b): ', | ||
D' - - - | D' - - - | ||
GENERAL ELECTR;C CO. | GENERAL ELECTR;C CO. | ||
Line 1,083: | Line 402: | ||
PROPRIETARY INFORMAild tj VERMONT YANKEE | PROPRIETARY INFORMAild tj VERMONT YANKEE | ||
: j. WATER CHEMISTRY REVIEW | : j. WATER CHEMISTRY REVIEW | ||
:e REVIEW 0F PLANT RECORDS e FUEL WARRANTY REPORTS e OPERATING LOGS / CHEMISTRY DATA e WATER TREATMENT SYSTEM OPERATION e RESULTS OF REVIEW e COMPANY PROPRIETARY e VISUAL / CHEMICAL ANALYSIS OF CRUD DEPOSITS e | |||
:e REVIEW 0F PLANT RECORDS | |||
e FUEL WARRANTY REPORTS e OPERATING LOGS / CHEMISTRY DATA e WATER TREATMENT SYSTEM OPERATION e RESULTS OF REVIEW e COMPANY PROPRIETARY e VISUAL / CHEMICAL ANALYSIS OF CRUD DEPOSITS e | |||
COMPANY PROPRIETARY e | COMPANY PROPRIETARY e | ||
HWT 12/11/79 | HWT 12/11/79 9 | ||
9 | |||
VERMONT YANKEE | VERMONT YANKEE | ||
' l | ' l 100 - CYCLE 3 =l H CYCLE 11 y l= CYCLE 5 H H - CYCLE 6 | ||
100 - CYCLE 3 =l H CYCLE 11 y l= CYCLE 5 H H - CYCLE 6 | |||
) 80 - | ) 80 - | ||
60 - | 60 - | ||
4 COMPANY PROPRIETARY I | 4 COMPANY PROPRIETARY I | ||
; fl0 - | ; fl0 - | ||
I 20 - | I 20 - | ||
p 4-e I i i 1975 1976 1977 1978 1979 IlWT | |||
p 4-e I i i 1975 1976 1977 1978 1979 | |||
IlWT | |||
. 12/11/79 k | . 12/11/79 k | ||
~- | ~- | ||
5 ANALYTICAL EVALUATIONS T | |||
5 | |||
ANALYTICAL EVALUATIONS T | |||
e PCI e HYDRIDING e THERF.AL/ HYDRAULIC e NUCLEAR - | e PCI e HYDRIDING e THERF.AL/ HYDRAULIC e NUCLEAR - | ||
1 | 1 | ||
-m | -m | ||
, HWT | , HWT | ||
~ | ~ | ||
12/11/79 s | 12/11/79 s | ||
f I | f I | ||
l . - | l . - | ||
VERMONT YANKEE | VERMONT YANKEE | ||
.4 5 REVIEW 0F OPERATING DATA e REACTOR POWER HISTORIES S COMPANY PP.0PP.ICTAR/ | |||
.4 | |||
5 REVIEW 0F OPERATING DATA e REACTOR POWER HISTORIES S COMPANY PP.0PP.ICTAR/ | |||
e RESULTS e | e RESULTS e | ||
0 0 COMPANY PROPRIETARY | 0 0 COMPANY PROPRIETARY 8 | ||
O COMPANY PROPRIETARY G | |||
COMPANY PROPRIETARY | |||
G | |||
12/11/79 u ._ - .._ _ | 12/11/79 u ._ - .._ _ | ||
VERMONT YANKEE PRIMARY HYDRIDE MECHANISM REVIEW e REVIEW 0F AVAILABLE INFORMATION e SPARE R0D RESULTS e HOT CELL EXAM . | |||
VERMONT YANKEE | |||
PRIMARY HYDRIDE MECHANISM REVIEW | |||
e REVIEW 0F AVAILABLE INFORMATION | |||
e SPARE R0D RESULTS | |||
e HOT CELL EXAM . | |||
e HYDRIDE REVIEW RESULTS e | e HYDRIDE REVIEW RESULTS e | ||
e COMPANY PROPRIETARY e - | e COMPANY PROPRIETARY e - | ||
e | e I | ||
l COMPANY PROPRIETARY I | |||
COMPANY PROPRIETARY I | |||
e HWT 12/11/79 | e HWT 12/11/79 | ||
s- , | s- , | ||
1 | 1 I | ||
VERMONT YANKEE- ! | |||
THERMAL / HYDRAULICS REVIEW ., ! | THERMAL / HYDRAULICS REVIEW ., ! | ||
e BOILING TRANSii10N e ! | |||
e BOILING TRANSii10N | COMPANY PROPRIETARY e | ||
i e THEPfiAL/HYDRfdLIC REVIEW RESULTS i | |||
e | e COMPANY PROPRIETARY ' | ||
t e | |||
NO ABN0PfiAL OPERATING CONDITIONS REPORTED i | |||
COMPANY PROPRIETARY e | COMPANY PROPRIETARY e | ||
COMPANY PROPRIETARY 9 | |||
HWT 12/11/79 | |||
COMPANY PROPRIETARY | |||
VERMONT YANKEE NUCLEAR REVIEW | VERMONT YANKEE NUCLEAR REVIEW | ||
.i t | .i t | ||
e NUCLEAR CONSIDERATIONS | e NUCLEAR CONSIDERATIONS 2 | ||
e ENRICHMENT e COMPANY PROPRIETARY e BUNDLE POWER HISTORY e PREDICTIVE CAPABILITY BENCHMARK e NUCLEAR REVIEW RESULTS e | |||
e PREDICTIVE CAPABILITY BENCHMARK e NUCLEAR REVIEW RESULTS e | |||
e COMPANY PROPRIETARY , | e COMPANY PROPRIETARY , | ||
e | e e | ||
COMPANY PROPP.!ETARY 9 | |||
HWT 12/11/79 | |||
c.. | c.. | ||
y . | y . | ||
w E | w E | ||
MAJOR INVESTIGATIONS 2 | MAJOR INVESTIGATIONS 2 | ||
RESULTS h ~ | RESULTS h ~ | ||
[ | [ | ||
e ANALYTICAL EVALUATIONS . I | e ANALYTICAL EVALUATIONS . I | ||
:l l l e l 1 | |||
:l l l e l | COMPANY PROPRIETARY e MANUFACTURING e | ||
1 | |||
COMPANY PROPRIETARY | |||
e MANUFACTURING e | |||
ENGINEERING SPECIFICATIONS MET e | ENGINEERING SPECIFICATIONS MET e | ||
COMPANY PROPRIETARY e - | COMPANY PROPRIETARY e - | ||
e HOT CELL e | e HOT CELL e | ||
CONFIRMATION OF ANALYTICAL EVALUATIONS e | CONFIRMATION OF ANALYTICAL EVALUATIONS e | ||
e COMPANY PROPRIETARY | e COMPANY PROPRIETARY | ||
: e HWT 12/11/79 | |||
: e | |||
HWT 12/11/79 | |||
i | i | ||
: FUEL EXPERIENCE | : FUEL EXPERIENCE e OVERALL FUEL PERFORMANCE e COMPANY PROPRIETARY e FALL 1975 PRODUCTION FUEL PERFORMANCE 9 | ||
HWT 12/11/79 e | |||
O | |||
e OVERALL FUEL PERFORMANCE | |||
e COMPANY PROPRIETARY e FALL 1975 PRODUCTION FUEL PERFORMANCE | |||
, -- . _ = - - - - - | , -- . _ = - - - - - | ||
i GE BWR/2-4 FUEL l | |||
EXPERIENCE SulfARY FUEL TYPES 7X7R 8X8 8X8R CUMULATIVE FUEL ASSEPILlES LOADED 5828 11121 3424 ASSEF2 LIES Sl??ED AT LEAST ONCE 5828 7599 310 LEAD SIPPED EATCH EXPOSURE, GWD/MT 28.1 25.2 17.2 CUMULATIVE ESTIMATED ROD FAILURE,% 0.0597. 0.003%* 0%* | |||
i | |||
GE BWR/2-4 FUEL l | |||
EXPERIENCE SulfARY FUEL TYPES 7X7R 8X8 8X8R CUMULATIVE FUEL ASSEPILlES LOADED 5828 11121 3424 ASSEF2 LIES Sl??ED AT LEAST ONCE 5828 7599 310 | |||
LEAD SIPPED EATCH EXPOSURE, GWD/MT 28.1 25.2 | |||
17.2 CUMULATIVE ESTIMATED ROD FAILURE,% 0.0597. 0.003%* 0%* | |||
C | C | ||
* EXCLUDING VERMONT YANKEE RELOAD 3 | * EXCLUDING VERMONT YANKEE RELOAD 3 HWT i | ||
HWT i | |||
12/11/79 | 12/11/79 | ||
l IMPROVED FUEL DESIGN PERFORMANCE (AS TESTED) 7X7R FUEL RODS l F | |||
>0 GWD/MT >6.5 GWD/MT >11 GWD/MT >16.5 GWD/MT >22 GWD/MT 41,160 39,200 34,594 27,930 14,847 3WR/2-3 244,412 242,599 230,937 142,002 25,676 i BWR/4-5 285,572 281,799 265,531 169,932 40,523 TOTAL 8X8/8X8R FUEL RCDS | |||
>0 GWD/MT >6.5 GWD/MT >11 GWD/MT >16,5 GWD/MT >22 GWD/MT 3WR/2-3 226,548 222,264 138,852 60,165 13,734 l | |||
l | |||
IMPROVED FUEL DESIGN PERFORMANCE | |||
(AS TESTED) | |||
7X7R FUEL RODS l F | |||
>0 GWD/MT >6.5 GWD/MT >11 GWD/MT >16.5 GWD/MT >22 GWD/MT 41,160 39,200 34,594 27,930 14,847 3WR/2-3 | |||
244,412 242,599 230,937 142,002 | |||
25,676 i BWR/4-5 | |||
285,572 281,799 265,531 169,932 40,523 TOTAL 8X8/8X8R FUEL RCDS | |||
>0 GWD/MT >6.5 GWD/MT >11 GWD/MT >16,5 GWD/MT >22 GWD/MT | |||
3WR/2-3 226,548 222,264 138,852 60,165 13,734 l | |||
3MR/4-5 271,719 260,127 138,600 38,556 3529 TOTAL 498,267 482,391 277,452 98,721 17,263 l | 3MR/4-5 271,719 260,127 138,600 38,556 3529 TOTAL 498,267 482,391 277,452 98,721 17,263 l | ||
~ | ~ | ||
Line 1,359: | Line 503: | ||
,.r. | ,.r. | ||
_ ._. ...m _ . _ . - _ -- - _ . | _ ._. ...m _ . _ . - _ -- - _ . | ||
F: | F: | ||
p.. _ | p.. _ | ||
p g .- | p g .- | ||
[ | [ | ||
GAD 0LINIA FUEL DETIGNS i | GAD 0LINIA FUEL DETIGNS i | ||
, e 7X7R DESIGNS e | , e 7X7R DESIGNS e | ||
COMPANY PROPRIETARY e | COMPANY PROPRIETARY e | ||
o INITIAL CORE AND RELOAD FUEL e 8X8 DESIGNS e | o INITIAL CORE AND RELOAD FUEL e 8X8 DESIGNS e | ||
COMPANY PROPRIETARY e , | COMPANY PROPRIETARY e , | ||
e INITIAL CORE AND RELOAD FUEL 1 | e INITIAL CORE AND RELOAD FUEL 1 | ||
COMPANY PROPRIETARY ; | COMPANY PROPRIETARY ; | ||
i | i HWT 12/11/79 | ||
HWT 12/11/79 | |||
FUEL EXPERIENCE AT HIGHER EXPOSURES 7X7R . | |||
>16.5 GWD/MT >22 GWD/MT BWR/2-3 COMPANY PROPRIETARY BWR/4-5 TOTAL 8X8 . | |||
>16.5 GWD/MT >22 GWD/MT BWR/2-3 COMPANY PROPRIETARY : | |||
FUEL EXPERIENCE AT HIGHER EXPOSURES | |||
7X7R . | |||
>16.5 GWD/MT >22 GWD/MT | |||
BWR/2-3 COMPANY PROPRIETARY BWR/4-5 TOTAL 8X8 | |||
>16.5 GWD/MT >22 GWD/MT | |||
BWR/2-3 | |||
COMPANY PROPRIETARY : | |||
BWP/4-5 TOTAL : | BWP/4-5 TOTAL : | ||
t | t | ||
_ l COMPANY PROPRIETARY , ! | _ l COMPANY PROPRIETARY , ! | ||
: HWT 12/11/79 | : HWT 12/11/79 | ||
i | i | ||
~ | ~ | ||
BWR/4 PROJECTS l 1975 AUG SEPT OCT NOV A (RELOAD) i i | |||
BWR/4 PROJECTS l | |||
1975 AUG SEPT OCT NOV | |||
A (RELOAD) i i | |||
~ | ~ | ||
B (RELOAD) i i l | B (RELOAD) i i l | ||
C (RELOAD) I i | C (RELOAD) I i I) (RELOAD) i i i | ||
1 VERMONT YANKEE R3 i l l E (INITIAL CORE) I i ; | |||
I) (RELOAD) i i | HWT 12/11/79 e | ||
VERMONT YANKEE R3 i l l | |||
E (INITIAL CORE) I i ; | |||
HWT 12/11/79 | |||
e | |||
..- e ::- : ___ - _ _ _ _. . . . _ . . - - . . . - - - , - _ . . _ _ _ - , | ..- e ::- : ___ - _ _ _ _. . . . _ . . - - . . . - - - , - _ . . _ _ _ - , | ||
PERFORMANCE OF BWR/4 FUEL i | PERFORMANCE OF BWR/4 FUEL i | ||
FABRICATED FALL 1975 | FABRICATED FALL 1975 f EAPOSURE BUNDLES (GWD/MT) 0FFGAS INSPECTION PROJECT 22 LOW PLANNED A 184 B 84 18 LOW , | ||
f EAPOSURE BUNDLES (GWD/MT) 0FFGAS INSPECTION PROJECT 22 LOW PLANNED A 184 | |||
B 84 18 LOW , | |||
120 21 LOW PERFORMED C | 120 21 LOW PERFORMED C | ||
80 22 LOW IN PROGRESS C | 80 22 LOW IN PROGRESS C | ||
VY R3 136 18 - 24 VERY HIGH PERFORMED | VY R3 136 18 - 24 VERY HIGH PERFORMED E 408 9 LOW J | ||
FALL 1975 PRODUCTION MAINTAINS GOOD PERFORMANCE EXCEPT VERMONT YANKEE RELOAD 3 | |||
. HWT 12/11/79 | |||
E 408 9 LOW | |||
. HWT | |||
12/11/79 | |||
SITEINSPECTION3 OTHER SITES PROJECT INSPECTION RESULTS A e PLANNED SPRING 1980 C e INSPECTION OF 6 BUNDLES AT $18 GWD/MT (4/79) - PROBLEM NOT OBSERVED l e FOLLOWUP INSPECTION PLANNED SPRING 1980 D e INSPECTION OF UP TO 7 BUNDLES IN PROGRESS WITH LEAD BUNDLES UP T0 s27 GWD/MT EARLY RESULTS DO NOT INDICATE PROBLEM O | |||
FIELD INSPECTIONS CONFIRM 0FFGAS TRENDS i HWT 12/11/79 e ,M"' | |||
SITEINSPECTION3 | |||
OTHER SITES | |||
PROJECT INSPECTION RESULTS A e PLANNED SPRING 1980 | |||
C e INSPECTION OF 6 BUNDLES AT $18 GWD/MT (4/79) - PROBLEM NOT OBSERVED l e FOLLOWUP INSPECTION PLANNED SPRING 1980 D e INSPECTION OF UP TO 7 BUNDLES IN PROGRESS WITH LEAD BUNDLES UP T0 s27 GWD/MT EARLY RESULTS DO NOT INDICATE PROBLEM | |||
HWT 12/11/79 | |||
e ,M" | |||
4 - | 4 - | ||
FUEL EXPERIENCE | FUEL EXPERIENCE | ||
==SUMMARY== | ==SUMMARY== | ||
~ | ~ | ||
e EXTENSIVE GOOD EXPERIENCE BASE | e EXTENSIVE GOOD EXPERIENCE BASE e 8X8 e COMPANY PROPRIETARY e FUEL FABRICATED DURING FALL,1975 e NO 0FFGAS INDICATION OF WIDESPREAD PROBLEM e INSPECTIONS CONFIRMING NO PROBLEM AT OTHER SITES e 8X8 FUEL IN VERMONT YANKEE e RELOAD 2 GOOD PERFORMANCE e RELOAD 4 GOOD PERFORMANCE - | ||
e 8X8 e COMPANY PROPRIETARY e FUEL FABRICATED DURING FALL,1975 | |||
e NO 0FFGAS INDICATION OF WIDESPREAD PROBLEM e INSPECTIONS CONFIRMING NO PROBLEM AT OTHER SITES e 8X8 FUEL IN VERMONT YANKEE e RELOAD 2 GOOD PERFORMANCE e RELOAD 4 GOOD PERFORMANCE - | |||
AT THIS TIME, FIELD DATA INDICATES VERMONT YANKEE RELOAD 3 FAILURES NOT A PROBLEM AT ANY OTHER REACTOR OR ANY OTHER RELOAD | AT THIS TIME, FIELD DATA INDICATES VERMONT YANKEE RELOAD 3 FAILURES NOT A PROBLEM AT ANY OTHER REACTOR OR ANY OTHER RELOAD | ||
~ | ~ | ||
HWT | HWT 12/11/79 | ||
12/11/79 | |||
I | I | ||
~ | ~ | ||
Line 1,536: | Line 563: | ||
l . | l . | ||
WATER R0D LOWER END PLUG WEAR: | WATER R0D LOWER END PLUG WEAR: | ||
t INFORMATION UPDATE FOR - | |||
VERMONT YANKEE STAFF NRC STAFF DECEPSER 1979 O | |||
t | 9 RPE l?/79 | ||
INFORMATION UPDATE FOR - | |||
VERMONT YANKEE STAFF NRC STAFF | |||
DECEPSER 1979 | |||
RPE l?/79 | |||
AGENDA i | AGENDA i | ||
e FIELD OBSERVATIONS - VERMONT YANKEE e OPERATION WITH IRRADIATED 8X8R FUEL . | |||
i e INVESTIGATI0t! PROGRAM e TEST RESULTS , | |||
e DESIGN MODIFICATION G | |||
e FIELD OBSERVATIONS - VERMONT YANKEE | RPE 12/79 | ||
e OPERATION WITH IRRADIATED 8X8R FUEL . | |||
i e INVESTIGATI0t! PROGRAM | |||
e TEST RESULTS , | |||
e DESIGN MODIFICATION | |||
~. - . . .. . . . -- -- | ~. - . . .. . . . -- -- | ||
'~ | '~ | ||
VERMONT YANKEE'0BSERVATIONS i | VERMONT YANKEE'0BSERVATIONS i | ||
e LTA INSPECTI0f' IDENTIFIED WEAR (APRIL 1979) | e LTA INSPECTI0f' IDENTIFIED WEAR (APRIL 1979) | ||
: i | : i e FOUR BWR/2-5 RETROFIT BUNDLES, ONE ADDITIONAL LTA BUNDLE INSPECTED (SEPTEMBER 1979) e TOTAL OF EIGHT WATER ROD, WATER / SPACER POSITIONING ROD LOWER END PLUGS INSPECTED e ALL THESE END PLUGS SHOW WEAR e TWO 8X8 WATER R0D LOWER END PLUGS (SHORT SHANK) SHOWED NO WEAR (EARLIER INSPECTIONS) . | ||
COMPANY PROPRIETARY e NO FUEL R0D LOWER END PLUG WEAR EVER OBSERVED WEAR OBSERVED FOR . WATER RODS ONLY 1 . | |||
e FOUR BWR/2-5 RETROFIT BUNDLES, ONE ADDITIONAL LTA BUNDLE INSPECTED (SEPTEMBER 1979) | |||
e TOTAL OF EIGHT WATER ROD, WATER / SPACER POSITIONING ROD LOWER END PLUGS INSPECTED | |||
e ALL THESE END PLUGS SHOW WEAR | |||
e TWO 8X8 WATER R0D LOWER END PLUGS (SHORT SHANK) SHOWED NO WEAR (EARLIER INSPECTIONS) . | |||
COMPANY PROPRIETARY e NO FUEL R0D LOWER END PLUG WEAR EVER OBSERVED | |||
WEAR OBSERVED FOR . WATER RODS ONLY | |||
1 . | |||
1 RPE 12/79 | 1 RPE 12/79 | ||
_ ~ _ -. - - | _ ~ _ -. - - | ||
AVERAGE WEAR VS. EXPOSURE 80 ~ | |||
AVERAGE WEAR VS. EXPOSURE | |||
80 ~ | |||
l | l | ||
~i | ~i | ||
: l I | : l I | ||
, 70 l | |||
, 70 | |||
l | |||
COMPANY PROPRIETARY 60 t | COMPANY PROPRIETARY 60 t | ||
l - | l - | ||
50 G | |||
50 | m' a | ||
E 40 el 5 | |||
2 GJ E , | 2 GJ E , | ||
E 30 E | E 30 E | ||
20 | 20 | ||
, i 10 | , i 10 5 to 15 20 25 30 EXPOSURE, IS/D/fti | ||
5 to 15 20 25 30 EXPOSURE, IS/D/fti | |||
OPERATIONAL CONSIDERATIONS e MAINTAIN C00LABLE GEOMETRY | |||
OPERATIONAL CONSIDERATIONS | |||
e MAINTAIN C00LABLE GEOMETRY | |||
- MAINTAIN SPACER POSITIONS e SPACER POSITIONING ASSURED BY WATER / POSITIONING R0D | - MAINTAIN SPACER POSITIONS e SPACER POSITIONING ASSURED BY WATER / POSITIONING R0D | ||
- FRICTION WITH FUEL RODS, WATER RODS, CHANNEL RESISTS FLOW FORCES e ROTATION SPACER OF MOVEMENT | - FRICTION WITH FUEL RODS, WATER RODS, CHANNEL RESISTS FLOW FORCES e ROTATION SPACER OF MOVEMENT | ||
* PREVENTED WITHOUT WATER / POSITIONIN | * PREVENTED WITHOUT WATER / POSITIONIN COMPANY PROPRIETARY e LEAD TEST ASSEMBLIES CONTINUE TO SHOW SATISFACTOR | ||
- NO ROTATION RPE 12/79 | |||
COMPANY PROPRIETARY | |||
e LEAD TEST ASSEMBLIES CONTINUE TO SHOW SATISFACTOR | |||
- NO ROTATION | |||
RPE 12/79 | |||
~ - ~ _ | ~ - ~ _ | ||
FUNCTIONAL ASSESSMENT e COMPANY PROPRIETARY bALLPHOTOSSHOWSQUARECORNERS,FLATSIDES e NO ROTATION MARKS OM WATER RODS AT SPACERS e CONCLUDE VIBRATION IS NON-TORSIONAL e ROTATION NOT OBSERVED, NOR EXPECTED | |||
FUNCTIONAL ASSESSMENT | |||
e COMPANY PROPRIETARY | |||
bALLPHOTOSSHOWSQUARECORNERS,FLATSIDES e NO ROTATION MARKS OM WATER RODS AT SPACERS | |||
e CONCLUDE VIBRATION IS NON-TORSIONAL e ROTATION NOT OBSERVED, NOR EXPECTED | |||
- ROTATIONAL RESISTANCE SIGNIFICANT | - ROTATIONAL RESISTANCE SIGNIFICANT | ||
- NO INHERENT ROTATIONAL FORCES KNOWN | - NO INHERENT ROTATIONAL FORCES KNOWN e SPACER MOVEMENT NOT EXPECTED | ||
e SPACER MOVEMENT NOT EXPECTED | |||
- COMPANY PROPRIETARY | - COMPANY PROPRIETARY | ||
- FRICTION EXPECTED TO EXCEED LIFT FORCE SPACER POSITIONING NOT AFFECTED | - FRICTION EXPECTED TO EXCEED LIFT FORCE SPACER POSITIONING NOT AFFECTED RPE GENERAL El.ECTRIC C0. | ||
RPE GENERAL El.ECTRIC C0. | |||
12/79 EROPR! EURY INFORMATION | 12/79 EROPR! EURY INFORMATION | ||
~ | ~ | ||
INVESTIGATION PROGRAM | INVESTIGATION PROGRAM | ||
.i | .i | ||
:s WEAR SURFACED DURING VERMONT YANKEE LTA INSPECTION,I SPRING | :s WEAR SURFACED DURING VERMONT YANKEE LTA INSPECTION,I SPRING | ||
: 1979 e DETAILED INSPECTIONS AT VERMONT YANKEE, PLANT A (BWP/!D SEPTEMBER 1979 | : 1979 e DETAILED INSPECTIONS AT VERMONT YANKEE, PLANT A (BWP/!D SEPTEMBER 1979 e FURTHER INSPECTIONS OF 8X8 AND 8X8R PLANNED 1979-1980 o SINGLE BUNDLE FLOW-INDUCED VIBRATION LOOP CONSTRUCTED, SEPTEMBER 1979 . | ||
e TESTS RUN ON 8X8R, 8X8 TO INDUCE VIBRATION, DEMONSTRATE EFFICACY OF MODIFICATION CONCEPTS e COMMUNICATIONS MAINTAINED WITH NRC AND CUSTOMERS 9 | |||
e FURTHER INSPECTIONS OF 8X8 AND 8X8R PLANNED 1979-1980 o SINGLE BUNDLE FLOW-INDUCED VIBRATION LOOP CONSTRUCTED, SEPTEMBER 1979 | G RPE 12/79 | ||
e TESTS RUN ON 8X8R, 8X8 TO INDUCE VIBRATION, DEMONSTRATE EFFICACY OF MODIFICATION CONCEPTS e COMMUNICATIONS MAINTAINED WITH NRC AND CUSTOMERS | |||
RPE 12/79 | |||
Q FLOW-INDUCED VIBRATION TESTING l l | |||
Q | |||
FLOW-INDUCED VIBRATION TESTING l l | |||
i l | i l | ||
\ | \ | ||
:e PRIOR TESTING PERFORMED; NO IMPACTING OBSERVED l | :e PRIOR TESTING PERFORMED; NO IMPACTING OBSERVED l 1 | ||
I COMPANY PROPRIETARY e | |||
e RECENT TESTS EXPLORED MAJOR PARAMETERS AFFECTING VIBRATIONAL BEHAVIOR COMPANY PROPRIETARY e | |||
1 | |||
I | |||
COMPANY PROPRIETARY | |||
e | |||
e RECENT TESTS EXPLORED MAJOR PARAMETERS AFFECTING VIBRATIONAL BEHAVIOR | |||
COMPANY PROPRIETARY e | |||
i RPE 12/79 l | i RPE 12/79 l | ||
y ,- - | y ,- - | ||
1 | 1 4 . | ||
4 . | |||
s o FUEL WATER R0D FIV TEST LOOP | s o FUEL WATER R0D FIV TEST LOOP | ||
:24" 0.D. TEST VESSEL FULL SCALE - 1 BUNDLE e SIMULATED TOP GUIDE e ACTUAL FUEL SUPPORT CASTING . | |||
:24" 0.D. TEST VESSEL | e TYPICAL INLET ORIFICE e REMOVABLE WATER ROD TEMPERATURE CONTROLLABLE $70 F---1800 F PRESSURE LOW <50 PSI FLOW i | ||
FULL SCALE - 1 BUNDLE e SIMULATED TOP GUIDE e ACTUAL FUEL SUPPORT CASTING . | |||
e TYPICAL INLET ORIFICE e REMOVABLE WATER ROD | |||
TEMPERATURE | |||
CONTROLLABLE $70 F---1800 F | |||
PRESSURE LOW <50 PSI | |||
FLOW | |||
i | |||
UP TO 150% EQUIVALENT VOLUMETRIC FLOW (V,Y,)- | UP TO 150% EQUIVALENT VOLUMETRIC FLOW (V,Y,)- | ||
i RPE | i RPE | ||
[ 12/79 l | [ 12/79 l | ||
t | t | ||
._ ~ s - . . , . , . | ._ ~ s - . . , . , . | ||
_a l | _a l | ||
y | y | ||
- E' | - E' | ||
- t rT L a. . . | - t rT L a. . . | ||
= 11 - l | = 11 - l | ||
: I | : I | ||
[d , | [d , | ||
~~ | ~~ | ||
Fr$,)' r .. _A 1 i | Fr$,)' r .. _A 1 i y st.sveing i ? | ||
y st.sveing i ? | |||
n - | n - | ||
( k$W 1 | ( k$W 1 i, | ||
l . | |||
a z i: - , =q ij >=M ' | a z i: - , =q ij >=M ' | ||
Y '' | Y '' | ||
"? ' l ss- e g n CU fI I I | "? ' l ss- e g n CU fI I I | ||
Line 1,801: | Line 658: | ||
I ! | I ! | ||
1 . | 1 . | ||
g- - 8 | g- - 8 a l[c 4 | ||
a l[c 4 | |||
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I a . 'l 8110 - 1 1 | I a . 'l 8110 - 1 1 I i | ||
I i | |||
'l ~~ ~ | 'l ~~ ~ | ||
l 1 sq | l 1 sq 4 , | ||
4 , | |||
_ ELEV.= 144 T' M: :H , | _ ELEV.= 144 T' M: :H , | ||
g Ibl/ g,h m - | |||
g | |||
Ibl/ g,h m - | |||
\ l | \ l | ||
' i i "t.ISh' | ' i i "t.ISh' | ||
~ | ~ | ||
l!' | l!' | ||
%R d' w: V s s | %R d' w: V s s i | ||
l' I | |||
I I: | |||
___ T _.. b y -- p o ,* | |||
I | ie y v Vp D | ||
I: | |||
___ T _.. b | |||
y -- p | |||
o ,* | |||
ie | |||
y v | |||
Vp D | |||
: u. / | : u. / | ||
A ll | A ll | ||
Line 1,858: | Line 684: | ||
. . _ _ - -_k 3, . | . . _ _ - -_k 3, . | ||
- . . . . . . . .( .. ... ..-~. - ~ ... ......_.J T _ . . | - . . . . . . . .( .. ... ..-~. - ~ ... ......_.J T _ . . | ||
;p1__ - | ;p1__ - | ||
. . ; < . x . . .. . m s . ~ | . . ; < . x . . .. . m s . ~ | ||
:' EILE L WATER ROD SENSORS | :' EILE L WATER ROD SENSORS V I B R A T I' O N s ss Z | ||
V I B R A T I' O N | |||
s ss Z | |||
',)A tTP jTOP GUIDE i | ',)A tTP jTOP GUIDE i | ||
'- < / | '- < / | ||
L li[ | L li[ | ||
/ ' | / ' | ||
h> /i. | h> /i. | ||
V 5 , | V 5 , | ||
! : I . | ! : I . | ||
j ,ESSEL l | j ,ESSEL l | ||
d o | |||
d | |||
o | |||
,/ | ,/ | ||
/ | / | ||
) - | ) - | ||
) . | ) . | ||
y [r I i | y [r I i | ||
.i ; | .i ; | ||
lyFUEL CHANNEL / | lyFUEL CHANNEL / | ||
A NATER Roo ; | A NATER Roo ; | ||
i | i Y | ||
Y | |||
/A*X [~X y ' | /A*X [~X y ' | ||
l | l | ||
- / | - / | ||
'l | 'l | ||
! / | ! / | ||
'A - | 'A - | ||
X MPACER (7) | X MPACER (7) | ||
Y[ ; | Y[ ; | ||
I * | I * | ||
/ | / | ||
1 IA ! / | |||
1 | |||
IA ! / | |||
.P(T) X , | .P(T) X , | ||
t, LTP .P(7) hX f' CORF PtATc | |||
t, LTP .P(7) | |||
hX f' | |||
CORF PtATc | |||
* l | * l | ||
.\ \.\ ._\ 1 - | .\ \.\ ._\ 1 - | ||
1_. .\s \\\\\\\ ~ | 1_. .\s \\\\\\\ ~ | ||
F4 | F4 | ||
) | ) | ||
. g_ | . g_ | ||
l | l | ||
% :~ ., f ~. | % :~ ., f ~. | ||
N | N | ||
/ | / | ||
e | e | ||
= .. | = .. | ||
=u= | =u= | ||
- - - - , - , , -- a ., - a -----v - -- - ---- - | - - - - , - , , -- a ., - a -----v - -- - ---- - | ||
,y | ,y | ||
-- 4, ----- | -- 4, ----- | ||
a | a | ||
* 1 e e t l | * 1 e e t l | ||
1 l | 1 l | ||
4 e i j | 4 e i j | ||
i | i m | ||
m | |||
'. 1 i | '. 1 i | ||
6 s | 6 s | ||
l l | l l | ||
Line 1,983: | Line 747: | ||
i l | i l | ||
l l | l l | ||
1 1 | 1 1 | ||
l I | |||
i COMPANY PROPRIETARY 9 | |||
9 l | |||
i e | |||
l | l | ||
[ | [ | ||
t e | t e | ||
e L | e L | ||
- 'w~ | - 'w~ | ||
m+, ,_ ,, _ , _ , " ' ' " ,-, | m+, ,_ ,, _ , _ , " ' ' " ,-, | ||
FLOW-INDUCED VIBRATION TEST - CONDITIONS ' | FLOW-INDUCED VIBRATION TEST - CONDITIONS ' | ||
s FLOW: 0-150-0% OF BWR/4 VOLUMETRIC FLOW | s FLOW: 0-150-0% OF BWR/4 VOLUMETRIC FLOW | ||
-e TEMPERATURE $70 F-180 F e FUEL BUNDLE HARDWARE | -e TEMPERATURE $70 F-180 F e FUEL BUNDLE HARDWARE | ||
- PRODUCT LINE HARDWARE, MODIFIED WATER R0D l | - PRODUCT LINE HARDWARE, MODIFIED WATER R0D l | ||
l | l | ||
' ~ | ' ~ | ||
COMPANY PROPRIETARY | COMPANY PROPRIETARY l | ||
l | |||
e BUNDLE CONFIGURATIONS TESTED | e BUNDLE CONFIGURATIONS TESTED | ||
. - LTA | . - LTA | ||
- 8X8 l | - 8X8 l | ||
Line 2,037: | Line 773: | ||
_ e END PLUG MODIFICATION I 1 | _ e END PLUG MODIFICATION I 1 | ||
l . | l . | ||
I RPE | I RPE l | ||
12/79 i l | |||
t l | t l | ||
. ._. - - - . ] | . ._. - - - . ] | ||
*e,' | *e,' | ||
e , | e , | ||
so l | so l | ||
l l | l l | ||
I 4 l a | I 4 l a | ||
e | e b | ||
COMPANY PROPRIETARY e e m | |||
e e m | |||
9 9 | 9 9 | ||
l | l | ||
FLOW-INDUCED VIBRATION TEST - RESULTS __. | FLOW-INDUCED VIBRATION TEST - RESULTS __. | ||
i | i CONFIGURATION PEAK G's a 1007.' FLOW RELATIVE PEAK G's LTA - . | ||
CONFIGURATION PEAK G's a 1007.' FLOW RELATIVE PEAK G's LTA - . | |||
LTA - | LTA - | ||
8X8R - | 8X8R - | ||
coggg3y ppopagg7,yy 8X8R - | coggg3y ppopagg7,yy 8X8R - | ||
8X8 - ' | 8X8 - ' | ||
COMPANY PROPRIETARY | COMPANY PROPRIETARY e | ||
G RPE 12/79 | |||
RPE 12/79 | |||
~ | ~ | ||
INCORE VIBRATION - | INCORE VIBRATION - | ||
FUEL CHANNEL WEAR 4 | FUEL CHANNEL WEAR 4 | ||
7------ p g-- | 7------ p g-- | ||
g-7 | g-7 p | ||
p | |||
; l A ., \ | ; l A ., \ | ||
,~ j | ,~ j | ||
] , | ] , | ||
Line 2,120: | Line 809: | ||
_,p' - | _,p' - | ||
*[s_, >. 'i ~ | *[s_, >. 'i ~ | ||
[ | [ | ||
{.l[ - | {.l[ - | ||
:. .x ,n , , , | :. .x ,n , , , | ||
y- | y-I k' , | ||
I k' , | |||
- trwas a = | - trwas a = | ||
l- ., [ | l- ., [ | ||
Line 2,137: | Line 820: | ||
",~: | ",~: | ||
~~ | ~~ | ||
[ , . _ | [ , . _ | ||
!w __ | !w __ | ||
6 r > < TL 't r l Th j S in . ._ - _ _.g ; r,__ _ _ ___ _J__ _ | |||
6 r > < TL 't r l Th | |||
j S in . ._ - _ _.g ; r,__ _ _ ___ _J__ _ | |||
y _ | y _ | ||
I I I .. '! r lN-....._f} _ | |||
I | |||
I I .. '! r lN-....._f} _ | |||
'QN - w __ | 'QN - w __ | ||
) | ) | ||
- l Figure 5-69. Typical Test Cross Section View - Moss landing Facility I ,i nL5 | |||
- l | |||
Figure 5-69. Typical Test Cross Section View - Moss landing Facility | |||
I ,i nL5 | |||
p.. | p.. | ||
1 s | |||
1 | I l | ||
s | |||
I | |||
l | |||
So - | So - | ||
* 40 - | * 40 - | ||
If 4 | |||
W g 20 - | W g 20 - | ||
5 COMPANY PROPRIETARY O | 5 COMPANY PROPRIETARY O | ||
O 2o - | O 2o - | ||
9 | 9 | ||
= | = | ||
10 | 10 0 | ||
0 5 to 15 20 25 30 y, CORE SUPPORT PL ATE DetFERENTIAL PRESSURE (ps. | |||
Figure 5-78. Moss Landing Hot Test vibration Summary (Acceleration, 5300F, 1015 psia) t I | |||
e 9 | |||
CORE SUPPORT PL ATE DetFERENTIAL PRESSURE (ps. | e | ||
Figure 5-78. Moss Landing Hot Test vibration Summary (Acceleration, 5300F, 1015 psia) t | |||
- . . - .~ | - . . - .~ | ||
v. | v. | ||
INCORE VIBRATION - FUEL CHANNEL WEAR WEAR VS, ACCELERATI0l LEVEL FRE0, ACCELERATION LEVEL WEAR / SIDE INCORE WITH 1" BYPASS HOLES FUEL WATER R0D . | |||
INCORE VIBRATION - FUEL CHANNEL WEAR | |||
WEAR VS, ACCELERATI0l LEVEL | |||
FRE0, ACCELERATION LEVEL WEAR / SIDE | |||
INCORE WITH 1" BYPASS HOLES | |||
FUEL WATER R0D | |||
COMPANY PROPRIETARY INCORE WITH 1" BYPASS H0LES PLUGGED - UNIFORM . | COMPANY PROPRIETARY INCORE WITH 1" BYPASS H0LES PLUGGED - UNIFORM . | ||
FLOW | FLOW WATER RCD . | ||
e RPE | |||
WATER RCD . | |||
e | |||
RPE | |||
- 12/79 | - 12/79 | ||
p .. , , | p .. , , | ||
',~ | ',~ | ||
WATER R0D MODIFICATION _ | WATER R0D MODIFICATION _ | ||
( .i | ( .i | ||
'. e NEW PRODUCTION CHAtlGED | '. e NEW PRODUCTION CHAtlGED | ||
- IMPROVE DESIGN MAR. GIN e WAiER ROD MODIFICATION , | - IMPROVE DESIGN MAR. GIN e WAiER ROD MODIFICATION , | ||
COMPANY PROPRIETARY e EQUIVALENT TO 8X8 . LOWER END PLUG e DEM0tlSTRATED FIELD PERFORMANCE o CONFIRMATORY TEST RESULTS e CONSISTENT WITH CHANNEL WEAR TESTS AND FIELD I OBSERVATIONS | COMPANY PROPRIETARY e EQUIVALENT TO 8X8 . LOWER END PLUG e DEM0tlSTRATED FIELD PERFORMANCE o CONFIRMATORY TEST RESULTS e CONSISTENT WITH CHANNEL WEAR TESTS AND FIELD I OBSERVATIONS | ||
.J | .J e IRRADIATED (OPERATING) FUEL PERFORMANCE UNAFFECTED | ||
e IRRADIATED (OPERATING) FUEL PERFORMANCE UNAFFECTED | |||
- NO CHANGE PLANNED | - NO CHANGE PLANNED | ||
.e 6 | .e 6 | ||
S RPE 12/79 | S RPE 12/79 | ||
r | r | ||
' a. | ' a. | ||
==SUMMARY== | ==SUMMARY== | ||
:s WEAR IDENTIFIED ON LTA BUNDLE | :s WEAR IDENTIFIED ON LTA BUNDLE | ||
- CONFIRMED ON SUBSEQUENT 8X8R, LTA EXAMINATIONS e INTENSIVE FLOW-INDUCED VIBRATION TESTS | - CONFIRMED ON SUBSEQUENT 8X8R, LTA EXAMINATIONS e INTENSIVE FLOW-INDUCED VIBRATION TESTS | ||
- VIBRATION CONFIRMED COMPANY PROPRIETARY e OPERATIONAL CONSEQUENCES EVALUATED | |||
- VIBRATION CONFIRMED | |||
COMPANY PROPRIETARY e OPERATIONAL CONSEQUENCES EVALUATED | |||
- SPACER POSITIONING NOT AFFECTED | - SPACER POSITIONING NOT AFFECTED | ||
- N0 IMPACT ON OPERATION - | - N0 IMPACT ON OPERATION - | ||
e SURVEILLANCE PROGRAM UNDERWAY e NEW PRODUCT MODIFICATION UNDERWAY | e SURVEILLANCE PROGRAM UNDERWAY e NEW PRODUCT MODIFICATION UNDERWAY | ||
- MARGIN IIPROVEMENT | - MARGIN IIPROVEMENT O | ||
9 RPE 12/79 | |||
RPE 12/79 | |||
_ . --}} | _ . --}} |
Latest revision as of 21:59, 21 February 2020
ML19309C359 | |
Person / Time | |
---|---|
Site: | Vermont Yankee File:NorthStar Vermont Yankee icon.png |
Issue date: | 12/11/1979 |
From: | VERMONT YANKEE NUCLEAR POWER CORP. |
To: | |
Shared Package | |
ML19309C354 | List: |
References | |
NUDOCS 8004080497 | |
Download: ML19309C359 (68) | |
Text
.
I g
- VERMONT YANKEE 1 8X8 FUEL FAILURE INVESTIGATION j l ,
\
PURPOSE: REVIEW OF INVESTIGATION OF THE VERMONT YANKEE 8X8 FUEL FAILURES BY ACCELERATED CORROSION SCOPE:
REVIEW:
e SITE OBSERVATIONS MAJOR INVESTIGATIVE. ACTIVITIES e
e FUEL EXPERIENCE ,
- HWT 12/11/79 I .
8ociosotG
-- - ~ . ..
9 i .u SITE OBSERVATIONS e 0FFGAS HISTORY e SIPPING RESULTS e SITE INSPECTIONS AND RESULTS HWT 12/11/79 9
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VERMONT YANKEE 8X8 OPERATIONAL , HISTORY i
FUEL BUNDLES LEAKER CYCLE l TYPE RELOAD INCORE BUNDLES 3 7X7R 1 40 8X8 2 328 4 7X7R 1 40 8X8 2 192 8X8 3 136 5 7X7R 1 40 8X8 2 108 ,
8X8 3 136 g 8X8 4 84 5 6A 7X7R 1 24 8X8 2 36 =
8X8 3 128 $
SX8 4 84
. 8X8R 5 96 (36 8X8) 6B 7X7R 1 24 8X8 2 120 8X8 3 44 8X8 4 84 8X8R 5 96 (36 8X8)
O
. HWT 12/11/79
LEAKER LOCATIONS FOR VERMONT YANKEE CYClF IA.-
i COMPANY PROPRIETARY CDs9CW'LOCAT105
- g LFtM 1ACAT105m au Tu(naamn u Q Utp LDCAftDa (L2TTn DIDICATO y 11P MACB1W1)
$ lan LacATION ,
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' - . LEAKER LOCATIONS FOR VERMONT YANKEE -
CYCLE 5
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COMPANY PROPRIETARY i
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LEAKER LOCATION FOR
' VERMONT YANKEE CYCLE 6B i
9 COMPANY PROPRIETARY r
( j g 1/ 2 LOCAT10w (tDeew'LOCATICW () ;
FOR All T1P MAChthf 4) ' )
,3 j' j (LETTER INDICAfts Q LPU f1r LDCAT10k MACHINE) 35 e stM LaCAfton A StM W AT10W 23
$ SenltC1 LACATION " -
a n, I a LEAKERS ~24 BIL/MT 7 .
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VERMONT YANKEE SITE INSPECTIONS i
e INSPECTIONMETHODS e NON-DESTRUCTIVE TESTING (NDT)
COMPANY PROPRIETARY e VISUAL e SITE INSPECTIONS e POST E0C-5 0UTAGE (NOVEMBER 1978)
COMPANY PROPRIETARY FUEL RETRIEVAL FOR HOT CELL EXAM e POST E0C-6A OUTAGE (APRIL 1979)
_ COMPANY PROPRIETARY CRUD SAMPLING e E0C-6B OUTAGE (0CTOBER 1979)
- COMPANY PROPRIETARY HWT
- 12/11/79 l
i l
.. l l
VERMONT YANKEE FUEL INSPECTION 8 X 8 LATTICE , I o
A B C DE F G H 1 T T 2 RELOAD 3, 4 (8D274)
GD - l 3 T , g3 T .
l 4 B 5
6 T T 7 Go- Go 8
T T A BC D E FG H 1 T T 2
3 T Go T 4 Go 5
RELOAD 2 (8D219) 6 7 Go- T
. 7 8 T T T = TIE RODS ur 12/11/79 i
- e VERMONT YANKEE E0C 5 SITE INSPECTION RESULTS
.c
. (NOVEMBER 1978) e RELOAD 3 INSPECliON e
COMPANY PROPRIETARY e
e e
e RELOAD 2 INSPECTION e
COMPANY PROPRIETARY HWT
_ 12/11/79
. 9 e
VER110NT YANKEE FUEL INSPECTION R0D FAILURE LOCATIONS E0C 5 a
A B C D
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FAILED RODS HRT 12/11/79
A
- LIFTING BALE 8 X 8 FUEL BUNDLE , ,
CONFIGURATION """h i s0-UPPER TIE PLATE
> PLENUM i
- COM.PRESSION SPRINGS s
- 7 i r 141,4-
- 6 i e- 121.3" -
- 5 i i- 1 01 .1 "
a
- 4 I i ,81 .0" COMPANY PROPRIETARY
- 3 I i- 60.8"
- 2 I i- 40.7" re i- 20.5" SPACERS l#1 ,
j j".
i LOWER TIE PLATE _
sui //
HWT 12/11/79
- l l
VERMONT YANKEE FUEL R0D RETRIEVAL FOR HOT CELL EXAM E0C 5 2
l i
~
i l
e CRITERIA 1
e MAXIMIZE INFORMATION -
e SOUND AND FAILED RODS e NUCLEAR BURNUP BENCHMARK e RODS SELECTION e COMPANY PROPRJETARY e PREDOMINATELY SOUND RODS ,
e CASK SHIPMENT TO HOT CELL (MARCH 1979)
HWT.
12/11/79
VERMONT YANKEE
.J
, E0C 6A SITE INSPECTION RESULTS
- (APRIL 1979) e RELOAD 3 INSPECTION e
COMPANY PROPRIETARY e
e CRUD SAMPLING -
e 1 Go ROD, 5 UO2 RODS ,,
i i
HWT l 12/11/79 !
t l
,i L_ _.
VERMONT YANKEE FUEL INSPECTION R0D FAILURE LOCATIONS E0C 6A j -
'A B C D E F G H I
T T
2 3
7 T
4 I .
5 6
T T
l 8 _
T T FAILED RODS (SUSPECTS NOT INCLUDED) HWT 12/11/79
VERMONT YANKEE. FUEL INSPECTION-R0D FAILURE LOCATIONS
'i TOTAL -
'A B C D E F G H ,
1 T
T 2
i i
3 T
T 4
5 T
T 7
8 -
T T .
FAILED RODS Hk7 .
12/11/79 -
~-
C VERMONT YANKEE i E0C 6B INSPECTION RESULTS
.' (OCTOBER 1979) e RELOAD 4 INSPECTION e
SELECTED RODS IN 3 SOUND BUNDLES e
COMPANY PROPRIETARY e
CRUD SAMPLES FROM SELECTED Go AND U0 2 RODS HWT 12/11/79 i
l
VERMONT YANKEE SITE INSPECTION
SUMMARY
e o . RELOAD 3 FUEL INSPECTION e
e COMPANY PROPRIETARY e
l e OTHER VEPEONT YANKEE 8X8 RELOADS e RELOAD 2 - PROBLEM NOT OBSERVED, o RELOAD 4 - PROBLEM NOT OBSERVED e OTHER ACTIVITIES e CRUD SAMPLING i e FUEL RETRIEVAL FOR HOT CELL RWT
- 12/11/79 l l
W:.. -
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MAJOR INVESTIGATIVE ACTIVITIES ,
~
l e MANUFACTURING e HOT CELL e WATER CHEM STRY e ANALYTICAL EVALUATIONS HWT 12/11/79
= -_ - _ _ _
VERMONT YANKEE MANUFACTURING REVIEW ACTIVITIES e DETAILED RECORD SEARCH (NOVEMBER 1978 FIELD DATA) e PRODUCTION STEPS e TIME OF FABRICATION e POTENTIAL OUT-0F-SPECIFICATION CONDITIONS e STATISTICAL COMPARISONS e SOURCE MATERIAL e MANUFACTURING LOTS
- Q e SPARE RCD TESTS ,
r e NON-DESTRUCTIVE / DESTRUCTIVE EXAM e COMPANY PROPRIETARY l
~
HWT ;
12/11/79 l
. i I
v + r e--- -w n --- w -v , -
4 + m n
{ ,. .
VERMONT YANKEE MANUFACTURING REVIEW DETAILED RECORD SEARCH RESULTS e RECORDS FOR FAILED RODS ,
'e FUEL ROD / CLADDING / PELLETS e MATERIAL / PROCESS CHANGES e INSPECTION REPORTS / MATERIAL REVIEW BOARD ACTION e COMPANY PROPRIETARY s RECORD SEARCH RESULTS e FAILURES DID NOT CORRELATE WITH:
~
COMPANY PROPRIETARY e
I HWT 12/11/79
VERMONT YANKEE RELOAD 3 e
COMPANY PROPRIETARY O
no 9
1
4 VERMONT YANKEE RELOAD 3 1
9 i
COMPANY PROPRIETARY 4
e
.HWT 12/11/79
VERMONT YANKEE MANUFACTURING REVIEW i
S e
COMPANY PROPRIETARY Se e
HWT 12/11/79
~
': i s VERMONT YANKEE k}
l 9
POTENTIAL CONTAMINATION REVIEW 4
e : SELECTIVE FAILURE SUGGESTIVE OF POTENTIAL CONTAMINATION o
MANUFACTURING PROCESS REVIEW 1
e ANALYTICAL TESTING -
- e CONIAMINATION REVIEW RESULTS e ~
NO EVIDENCE DEVELOPED TO SUGGEST CONTAMINATION DURING FABRICATION e ANALYSES (AUGER /SIMS)
COMPARISON OF SPARE RODS TO SIMILAR VINTAGE RODS AND CURRENT PRODUCTION 9
COMPANY PROPRIETARY COMPANY PROPRIETARY HWT 12/11/79 m .. _h. m, . . . . , . _- _
C. _ . . _ .c . . - , - .
VERMONT YANKEE MANUFACTURING REVIEW j l
- SPARE R0D TESTS l
, i e AVAILABLE MAN.FACTURED SPARE RODS e 2 RODS FROM DWZO2 e 1 R0D FROM DWZ05 .
e EXAMINATIONS PERFORMED e NJN-DESTRUCTIVE / DESTRUCTIVE EXAMINATIONS e COMPANY PROPRIETARY e EXAMINATION RESULTS ,
e NO SIGNIFICANT DEVIATIONS FROM SPECIFICATIONS PELLETS / CLADDING /END PLUG / FILL GAS o
COMPANY PROPRIETARY HWT 12/11/79
l VERMONT YANKEE !
l >
MANUFACTURING REVIEW
SUMMARY
j l l e RECORD SEARCH '
e NO DEFINITE CORRELATION TO ANY SPECIFIC PARAMETER e ENGINEERING SPECIFICATIONS M'ET e
COMPANY PROPRIETARY e
e SPARE RODS e NO SIGNIFICANT DEVIATIONS FROM SPECIFICATIONS e COMPANY PROPRIETARY ,
HhT 12/11/79
+ vaso ww. e. , , .,,--s -- - e , ~
VERMONT YANKEE HOT CELL EXAM e FUEL R0D DATA e 12 RODS RETRIEVED e FAILURE CHARACTERISTICS e NUCLEAR BENCHMARK e EXAMINATIONS ,
e NON-DESTRUCTIVE TESTING VISUAL NEUTROGRAPHY PROFILOMETRY GAMMA SCAN e
.. COMPANY PROPRIETARY e DESTRUCTIVE EXAM LEAK CHECK CLADDING ANALYSIS FOR HYDROGEN SECONDARY EMISSION MICROSCOPY (SEM)
METALL0 GRAPHY BURNUP ANALYSIS HWT 12/11/79
w h:
1 VERMONT YANKEE NON-DESTRUCTIVE EXAMINATION i-e VISUAL -
PROGRESSIVE CORROSION e NEUTROGRAPHY -
NO CENTRAL VOIDING NO MOISTURE IN GETTER COMPANY PROPRIETARY e PROFILOMETF.Y -
NO CLAD RIDGING COMPANY PROPRIETARY e GAMMA SCAN -
NO MAJOR AXIAL BURNUP DISCONTINUITIES e COMPANY PROPRIETARY NNI
.12/11/79 1
VERMONT YANKEE DESTRUCTIVE EXAMINATION j e LEAK CHECK
- CLAD, WELD, END Pi.UG INTEGRITY e CLAD ANALYSIS -
SECONDARY HYDRIDING e SE -
COMPANY PROPRIETARY e METALL0 GRAPHY NO EVIDENCE OF CENTRAL FUEL VOIDING w FUEL MICROSTRUCTURE CONSISTENT WITH PREDICTED POWERS COMPANY PROPRIETARY e BURNUP ANALYSES GOOD AGREEMENT WITH NUCLEAR .
CALCULATIONS .
HWT 12/11/79
~
b COMPANY PROPRIETARY 9
e 4
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9 x
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COMPANY PROPRIETARY o
O 9
l euB M <* -- e - -,
-GENERAL ELECTR;C CO.
PROPRIETARY INFORMA VERMONT YANKEE WATER CHEMISTRYliEVIEW 5
l :s REVIEW 0F PLANT RECORDS t
- e FUEL WARRANTY REPORTS e OPERATING LOGS / CHEMISTRY DATA e WATER TREATMENT SYSTEM OPERATION e RESULTS OF REVIEW e COMPANY PROPRIETARY e VISUAL / CHEMICAL ANALYSIS OF CRUD, DEPOSITS l
e
- COMPANY PROPRIETARY 6
e HWT 12/11/79 l
1 l
l l
ll t ll
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A R N M Y O P
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GENERAL ELECTR;C CO.
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PROPRIETARY INFORMAild tj VERMONT YANKEE
- j. WATER CHEMISTRY REVIEW
- e REVIEW 0F PLANT RECORDS e FUEL WARRANTY REPORTS e OPERATING LOGS / CHEMISTRY DATA e WATER TREATMENT SYSTEM OPERATION e RESULTS OF REVIEW e COMPANY PROPRIETARY e VISUAL / CHEMICAL ANALYSIS OF CRUD DEPOSITS e
COMPANY PROPRIETARY e
HWT 12/11/79 9
9
VERMONT YANKEE
' l 100 - CYCLE 3 =l H CYCLE 11 y l= CYCLE 5 H H - CYCLE 6
) 80 -
60 -
4 COMPANY PROPRIETARY I
- fl0 -
I 20 -
p 4-e I i i 1975 1976 1977 1978 1979 IlWT
. 12/11/79 k
~-
5 ANALYTICAL EVALUATIONS T
e PCI e HYDRIDING e THERF.AL/ HYDRAULIC e NUCLEAR -
1
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, HWT
~
12/11/79 s
f I
l . -
VERMONT YANKEE
.4 5 REVIEW 0F OPERATING DATA e REACTOR POWER HISTORIES S COMPANY PP.0PP.ICTAR/
e RESULTS e
0 0 COMPANY PROPRIETARY 8
O COMPANY PROPRIETARY G
12/11/79 u ._ - .._ _
VERMONT YANKEE PRIMARY HYDRIDE MECHANISM REVIEW e REVIEW 0F AVAILABLE INFORMATION e SPARE R0D RESULTS e HOT CELL EXAM .
e HYDRIDE REVIEW RESULTS e
e COMPANY PROPRIETARY e -
e I
l COMPANY PROPRIETARY I
e HWT 12/11/79
s- ,
1 I
VERMONT YANKEE- !
THERMAL / HYDRAULICS REVIEW ., !
e BOILING TRANSii10N e !
COMPANY PROPRIETARY e
i e THEPfiAL/HYDRfdLIC REVIEW RESULTS i
e COMPANY PROPRIETARY '
t e
NO ABN0PfiAL OPERATING CONDITIONS REPORTED i
COMPANY PROPRIETARY e
COMPANY PROPRIETARY 9
HWT 12/11/79
VERMONT YANKEE NUCLEAR REVIEW
.i t
e NUCLEAR CONSIDERATIONS 2
e ENRICHMENT e COMPANY PROPRIETARY e BUNDLE POWER HISTORY e PREDICTIVE CAPABILITY BENCHMARK e NUCLEAR REVIEW RESULTS e
e COMPANY PROPRIETARY ,
e e
COMPANY PROPP.!ETARY 9
HWT 12/11/79
c..
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w E
MAJOR INVESTIGATIONS 2
RESULTS h ~
[
e ANALYTICAL EVALUATIONS . I
- l l l e l 1
COMPANY PROPRIETARY e MANUFACTURING e
ENGINEERING SPECIFICATIONS MET e
COMPANY PROPRIETARY e -
e HOT CELL e
CONFIRMATION OF ANALYTICAL EVALUATIONS e
e COMPANY PROPRIETARY
- e HWT 12/11/79
i
- FUEL EXPERIENCE e OVERALL FUEL PERFORMANCE e COMPANY PROPRIETARY e FALL 1975 PRODUCTION FUEL PERFORMANCE 9
HWT 12/11/79 e
O
, -- . _ = - - - - -
i GE BWR/2-4 FUEL l
EXPERIENCE SulfARY FUEL TYPES 7X7R 8X8 8X8R CUMULATIVE FUEL ASSEPILlES LOADED 5828 11121 3424 ASSEF2 LIES Sl??ED AT LEAST ONCE 5828 7599 310 LEAD SIPPED EATCH EXPOSURE, GWD/MT 28.1 25.2 17.2 CUMULATIVE ESTIMATED ROD FAILURE,% 0.0597. 0.003%* 0%*
C
- EXCLUDING VERMONT YANKEE RELOAD 3 HWT i
12/11/79
l IMPROVED FUEL DESIGN PERFORMANCE (AS TESTED) 7X7R FUEL RODS l F
>0 GWD/MT >6.5 GWD/MT >11 GWD/MT >16.5 GWD/MT >22 GWD/MT 41,160 39,200 34,594 27,930 14,847 3WR/2-3 244,412 242,599 230,937 142,002 25,676 i BWR/4-5 285,572 281,799 265,531 169,932 40,523 TOTAL 8X8/8X8R FUEL RCDS
>0 GWD/MT >6.5 GWD/MT >11 GWD/MT >16,5 GWD/MT >22 GWD/MT 3WR/2-3 226,548 222,264 138,852 60,165 13,734 l
3MR/4-5 271,719 260,127 138,600 38,556 3529 TOTAL 498,267 482,391 277,452 98,721 17,263 l
~
EXTENSIVE FUEL EXPERIENCE ~
, TO HIGH EXPOSURES
' . HWT 12/11/79 r
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_ ._. ...m _ . _ . - _ -- - _ .
F:
p.. _
p g .-
[
GAD 0LINIA FUEL DETIGNS i
, e 7X7R DESIGNS e
COMPANY PROPRIETARY e
o INITIAL CORE AND RELOAD FUEL e 8X8 DESIGNS e
COMPANY PROPRIETARY e ,
e INITIAL CORE AND RELOAD FUEL 1
COMPANY PROPRIETARY ;
i HWT 12/11/79
FUEL EXPERIENCE AT HIGHER EXPOSURES 7X7R .
>16.5 GWD/MT >22 GWD/MT BWR/2-3 COMPANY PROPRIETARY BWR/4-5 TOTAL 8X8 .
>16.5 GWD/MT >22 GWD/MT BWR/2-3 COMPANY PROPRIETARY :
BWP/4-5 TOTAL :
t
_ l COMPANY PROPRIETARY , !
- HWT 12/11/79
i
~
BWR/4 PROJECTS l 1975 AUG SEPT OCT NOV A (RELOAD) i i
~
B (RELOAD) i i l
C (RELOAD) I i I) (RELOAD) i i i
1 VERMONT YANKEE R3 i l l E (INITIAL CORE) I i ;
HWT 12/11/79 e
..- e ::- : ___ - _ _ _ _. . . . _ . . - - . . . - - - , - _ . . _ _ _ - ,
PERFORMANCE OF BWR/4 FUEL i
FABRICATED FALL 1975 f EAPOSURE BUNDLES (GWD/MT) 0FFGAS INSPECTION PROJECT 22 LOW PLANNED A 184 B 84 18 LOW ,
120 21 LOW PERFORMED C
80 22 LOW IN PROGRESS C
VY R3 136 18 - 24 VERY HIGH PERFORMED E 408 9 LOW J
FALL 1975 PRODUCTION MAINTAINS GOOD PERFORMANCE EXCEPT VERMONT YANKEE RELOAD 3
. HWT 12/11/79
SITEINSPECTION3 OTHER SITES PROJECT INSPECTION RESULTS A e PLANNED SPRING 1980 C e INSPECTION OF 6 BUNDLES AT $18 GWD/MT (4/79) - PROBLEM NOT OBSERVED l e FOLLOWUP INSPECTION PLANNED SPRING 1980 D e INSPECTION OF UP TO 7 BUNDLES IN PROGRESS WITH LEAD BUNDLES UP T0 s27 GWD/MT EARLY RESULTS DO NOT INDICATE PROBLEM O
FIELD INSPECTIONS CONFIRM 0FFGAS TRENDS i HWT 12/11/79 e ,M"'
4 -
FUEL EXPERIENCE
SUMMARY
~
e EXTENSIVE GOOD EXPERIENCE BASE e 8X8 e COMPANY PROPRIETARY e FUEL FABRICATED DURING FALL,1975 e NO 0FFGAS INDICATION OF WIDESPREAD PROBLEM e INSPECTIONS CONFIRMING NO PROBLEM AT OTHER SITES e 8X8 FUEL IN VERMONT YANKEE e RELOAD 2 GOOD PERFORMANCE e RELOAD 4 GOOD PERFORMANCE -
AT THIS TIME, FIELD DATA INDICATES VERMONT YANKEE RELOAD 3 FAILURES NOT A PROBLEM AT ANY OTHER REACTOR OR ANY OTHER RELOAD
~
HWT 12/11/79
I
~
l
. BWR/2-5 RETROFIT FUEL DESIGN - >
l .
WATER R0D LOWER END PLUG WEAR:
t INFORMATION UPDATE FOR -
VERMONT YANKEE STAFF NRC STAFF DECEPSER 1979 O
9 RPE l?/79
AGENDA i
e FIELD OBSERVATIONS - VERMONT YANKEE e OPERATION WITH IRRADIATED 8X8R FUEL .
i e INVESTIGATI0t! PROGRAM e TEST RESULTS ,
e DESIGN MODIFICATION G
RPE 12/79
~. - . . .. . . . -- --
'~
VERMONT YANKEE'0BSERVATIONS i
e LTA INSPECTI0f' IDENTIFIED WEAR (APRIL 1979)
- i e FOUR BWR/2-5 RETROFIT BUNDLES, ONE ADDITIONAL LTA BUNDLE INSPECTED (SEPTEMBER 1979) e TOTAL OF EIGHT WATER ROD, WATER / SPACER POSITIONING ROD LOWER END PLUGS INSPECTED e ALL THESE END PLUGS SHOW WEAR e TWO 8X8 WATER R0D LOWER END PLUGS (SHORT SHANK) SHOWED NO WEAR (EARLIER INSPECTIONS) .
COMPANY PROPRIETARY e NO FUEL R0D LOWER END PLUG WEAR EVER OBSERVED WEAR OBSERVED FOR . WATER RODS ONLY 1 .
1 RPE 12/79
_ ~ _ -. - -
AVERAGE WEAR VS. EXPOSURE 80 ~
l
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, 70 l
COMPANY PROPRIETARY 60 t
l -
50 G
m' a
E 40 el 5
2 GJ E ,
E 30 E
20
, i 10 5 to 15 20 25 30 EXPOSURE, IS/D/fti
OPERATIONAL CONSIDERATIONS e MAINTAIN C00LABLE GEOMETRY
- MAINTAIN SPACER POSITIONS e SPACER POSITIONING ASSURED BY WATER / POSITIONING R0D
- FRICTION WITH FUEL RODS, WATER RODS, CHANNEL RESISTS FLOW FORCES e ROTATION SPACER OF MOVEMENT
- PREVENTED WITHOUT WATER / POSITIONIN COMPANY PROPRIETARY e LEAD TEST ASSEMBLIES CONTINUE TO SHOW SATISFACTOR
- NO ROTATION RPE 12/79
~ - ~ _
FUNCTIONAL ASSESSMENT e COMPANY PROPRIETARY bALLPHOTOSSHOWSQUARECORNERS,FLATSIDES e NO ROTATION MARKS OM WATER RODS AT SPACERS e CONCLUDE VIBRATION IS NON-TORSIONAL e ROTATION NOT OBSERVED, NOR EXPECTED
- ROTATIONAL RESISTANCE SIGNIFICANT
- NO INHERENT ROTATIONAL FORCES KNOWN e SPACER MOVEMENT NOT EXPECTED
- COMPANY PROPRIETARY
- FRICTION EXPECTED TO EXCEED LIFT FORCE SPACER POSITIONING NOT AFFECTED RPE GENERAL El.ECTRIC C0.
12/79 EROPR! EURY INFORMATION
~
INVESTIGATION PROGRAM
.i
- 1979 e DETAILED INSPECTIONS AT VERMONT YANKEE, PLANT A (BWP/!D SEPTEMBER 1979 e FURTHER INSPECTIONS OF 8X8 AND 8X8R PLANNED 1979-1980 o SINGLE BUNDLE FLOW-INDUCED VIBRATION LOOP CONSTRUCTED, SEPTEMBER 1979 .
e TESTS RUN ON 8X8R, 8X8 TO INDUCE VIBRATION, DEMONSTRATE EFFICACY OF MODIFICATION CONCEPTS e COMMUNICATIONS MAINTAINED WITH NRC AND CUSTOMERS 9
G RPE 12/79
Q FLOW-INDUCED VIBRATION TESTING l l
i l
\
- e PRIOR TESTING PERFORMED; NO IMPACTING OBSERVED l 1
I COMPANY PROPRIETARY e
e RECENT TESTS EXPLORED MAJOR PARAMETERS AFFECTING VIBRATIONAL BEHAVIOR COMPANY PROPRIETARY e
i RPE 12/79 l
y ,- -
1 4 .
s o FUEL WATER R0D FIV TEST LOOP
- 24" 0.D. TEST VESSEL FULL SCALE - 1 BUNDLE e SIMULATED TOP GUIDE e ACTUAL FUEL SUPPORT CASTING .
e TYPICAL INLET ORIFICE e REMOVABLE WATER ROD TEMPERATURE CONTROLLABLE $70 F---1800 F PRESSURE LOW <50 PSI FLOW i
UP TO 150% EQUIVALENT VOLUMETRIC FLOW (V,Y,)-
i RPE
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FLOW-INDUCED VIBRATION TEST - CONDITIONS '
s FLOW: 0-150-0% OF BWR/4 VOLUMETRIC FLOW
-e TEMPERATURE $70 F-180 F e FUEL BUNDLE HARDWARE
- PRODUCT LINE HARDWARE, MODIFIED WATER R0D l
l
' ~
COMPANY PROPRIETARY l
e BUNDLE CONFIGURATIONS TESTED
. - LTA
- 8X8 l
- BWR/6
- 8X8R e PRODUCT LINE
_ e END PLUG MODIFICATION I 1
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FLOW-INDUCED VIBRATION TEST - RESULTS __.
i CONFIGURATION PEAK G's a 1007.' FLOW RELATIVE PEAK G's LTA - .
LTA -
8X8R -
coggg3y ppopagg7,yy 8X8R -
8X8 - '
COMPANY PROPRIETARY e
G RPE 12/79
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INCORE VIBRATION -
FUEL CHANNEL WEAR 4
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- l Figure 5-69. Typical Test Cross Section View - Moss landing Facility I ,i nL5
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5 COMPANY PROPRIETARY O
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0 5 to 15 20 25 30 y, CORE SUPPORT PL ATE DetFERENTIAL PRESSURE (ps.
Figure 5-78. Moss Landing Hot Test vibration Summary (Acceleration, 5300F, 1015 psia) t I
e 9
e
- . . - .~
v.
INCORE VIBRATION - FUEL CHANNEL WEAR WEAR VS, ACCELERATI0l LEVEL FRE0, ACCELERATION LEVEL WEAR / SIDE INCORE WITH 1" BYPASS HOLES FUEL WATER R0D .
COMPANY PROPRIETARY INCORE WITH 1" BYPASS H0LES PLUGGED - UNIFORM .
FLOW WATER RCD .
e RPE
- 12/79
p .. , ,
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WATER R0D MODIFICATION _
( .i
'. e NEW PRODUCTION CHAtlGED
- IMPROVE DESIGN MAR. GIN e WAiER ROD MODIFICATION ,
COMPANY PROPRIETARY e EQUIVALENT TO 8X8 . LOWER END PLUG e DEM0tlSTRATED FIELD PERFORMANCE o CONFIRMATORY TEST RESULTS e CONSISTENT WITH CHANNEL WEAR TESTS AND FIELD I OBSERVATIONS
.J e IRRADIATED (OPERATING) FUEL PERFORMANCE UNAFFECTED
- NO CHANGE PLANNED
.e 6
S RPE 12/79
r
' a.
SUMMARY
- s WEAR IDENTIFIED ON LTA BUNDLE
- CONFIRMED ON SUBSEQUENT 8X8R, LTA EXAMINATIONS e INTENSIVE FLOW-INDUCED VIBRATION TESTS
- VIBRATION CONFIRMED COMPANY PROPRIETARY e OPERATIONAL CONSEQUENCES EVALUATED
- SPACER POSITIONING NOT AFFECTED
- N0 IMPACT ON OPERATION -
e SURVEILLANCE PROGRAM UNDERWAY e NEW PRODUCT MODIFICATION UNDERWAY
- MARGIN IIPROVEMENT O
9 RPE 12/79
_ . --