ML20136F283
| ML20136F283 | |
| Person / Time | |
|---|---|
| Site: | 05000000, Vogtle |
| Issue date: | 10/02/1984 |
| From: | Johnston W Office of Nuclear Reactor Regulation |
| To: | Novak T Office of Nuclear Reactor Regulation |
| Shared Package | |
| ML082840446 | List:
|
| References | |
| FOIA-84-663 NUDOCS 8410150287 | |
| Download: ML20136F283 (5) | |
Text
.
(
(
OCf 2 1984 Docket Nos.,5.0-424/425 MEMORANDUM FOR:
Thomas M. Novak, Assistant Director for Licensing Division of Licensing FROM:
William V. Johnstol, Assistant Director Materials, Chemical & Environmental Technology Division of Engineering
SUBJECT:
PUMP FLYWHEEL INTEGRITY - V0GTLE UNITS 1 AND 2 Plant Name:
Vogtle Electric Generating Plant, Units 1 and 2 Suppliers: Westinghouse Licensing Stage:
OL Docket Nos.: 50-424/425 Responsible Branch & Project Manager:
LB #4, M. Miller Reviewer:
S. J. Bhatt Requested Completion Date:
September 30, 1984 Description of Task:
SER Input - Pump Flywheel Integrity Review Status:
Complete The Component Integrity Section of the Materials Engineering Branch, Division of Engineering, has reviewed the FSAR Section 5.4.1.1, " Pump Flywheel Integrity."
Based on our evaluation, we conclude that the flywheel material and design of the pump-motor assembly at Vogtle Units 1 and 2 are acceptable.
Our Safety Review is attached.
d William V. Johnston, Assistant Director Materials, Chemical & Environmental Technology Division of Engineering
Attachment:
As stated cc:
R. Vollmer B. D. Liaw D. Eisenhut W. Hazelton E. Sullivan R. Klecker DISTRIBUTION S. Pawlicki C. Cheng Docket 1
E. Adensam S. Bhatt it M. Miller iMTEB Vogtle File
- SEE PREVIOUS FOR CONCURRENC S.
DE:MTEB DE:MTEB DE:M Dl:
ET SBhatt:aj RKlecker BD ia W ohnston 9/ /84 9/ /84 9
/84 9/3*/84 (4/0/5p 22.
g %,
w g
f OCT 2 E64 1
Docket Nos. 50-424/425 MEMORANDUM FOR: Thomas M. Novak, Assistant Director for Licensing Division of Licensing FROM:
William V. Johnston, Assistant Director Materials, Chemical & Environmental Technology Division of Engineering
SUBJECT:
PUMP FLYWHEEL INTEGRITY - V0GTLE UNITS 1 AND 2 Plant Name: Vogtle Electric Generating Plant, Units 1 and 2 Suppliers: Westinghouse Licensing Stage:
OL Docket Nos.: 50-424/425 Responsible Branch & Project Manager: LB #4, M. Miller Reviewer:
S. J. Bhatt Requested Completion Date:
September 30, 1984 Description of Task: SER Input - Pumpt Flywheel Integrity Review Status:
Complete The Component Integrity Section of the Materials Engineering Branch, Division of Engineering, has reviewed the FSAR Section 5.4.1.1, " Pump Flywheel Integrity."
Based on our evaluation, we conclude that the flywheel material and design of the pump-motor assembly at Vogtle Units 1 and 2 are acceptable. Our Safety Review is attached.
William V. Johnston, Assistant Director Materials, Chemical & Environmental Technology Division of Engineering
Attachment:
As stated cc:
R. Vollmer B. D. Liaw D. Eisenhut W. Hazelton E. Sullivan R. Klecker DISTRIBUTION S. Pawlicki C. Cheng Docket Files E. Adensam S. Bhatt MTEB Rdg File M. Miller MTEB Vogtle File
/
/%
MTW
- MT DE:MTEB DE:ADMCET Sp_3att:aj Klecker BDLiaw WJohnston 9/ff/84
'9/7t/84 9/ /84 9/ /84
,1 2.
Attachment Georgia Power Company Vogtle Electric Generating Plant-Unit Nos. 1 and 2 Docket Nos. 50-424/425 Materials Engineering Branch Safety Evaluation Report PUMP FLYWHEEL INTEGRITY The safety objective of this review is to assure that the integrity of the primary reactor coolant pump flywheel is maintained to prevent failure at normal operating speeds and speeds that might be reached under accident con-ditions and thus preclude the generation of missiles.
The basis for review is outlined in Standard Review Plan (SRP), Section 5.4.1.1 and the Regulatory Guide 1.14, which describes and recommends a 3
method acceptable to the NRC staff in implementing General Design Criterion 4,
" Environmental and Missile Design Bases," of Appendix A of 10 CFR Part 50 1,
with regard to minimizing the potential for failure of flywheels of the reactor coolant pump.
EVALUATION 4
a)
Materials and Fabrication Flywheels are fabricated from SA-533, Grade B, Class I steel and consist of j
two thick plates bolted together.
The material is vacuum-melted with a degassing process. The materials, as well as finished flywheels,'re sub-a jacted to 100 percent volumetric ultrasonic inspection using procedures and acceptance standards specified in Section III of the ASME Code.
The nil-ductility transition temperature (NDTT) of the flywheel material is
-no higher than 10*F.
The Charpy V-notch energy level is at least 50 foot-pounds in the WR orientation at 70*F.
Hence, the RT f 10*F can be assumed.
b)
Design Basis'.
The calculated stresses at the operating speed, due to centrifugal forces, and the interference fit on the shaft are within the Regulatory Guide limits.
The pump runs at 1190 rpm and may operate briefly at overspeed of 109 per-cent during the loss of offsite electrical power. The design speed is 125 percent of the operating speed. The flywheels are also tested at 125 per-cent of the maximum synchronous speed of the motor. The combined stresses at the design overspeed, due to interference fit and centrifugal forces, are within the Regulatory Guide limit.
The flywheels can be inspected by removing the cover. Hence, any crack that developed can be noticed. The critical crack length at the keyways, where
+
the stress concentration is high, is about 6 inches at the design overspeed.
I c)
Evaluation
!]
We have reviewed the material, fabrication, design and inspection aspects of the pump flywheels for compliance with the Regulatory Guide 1.14. We nave concluded that the structural integrity of the flywheels is adequate I
to withstand the forces imposed by overspeed transients without the loss l
of function, and the integrity will be verified periodically by inspection to assure that the integrity is maintained.
9
~1
}
9
r.
o u
r.
OCT 2 1984 1
Docket Nos.,,5.Q-42'4/425 MEMORANDUM FOR: Thomas M. Novak, Assistant Director for Licensing Division of Licensing FROM:
William V. Johnston, Assistant Director Materials, Chemical & Environmental Technology l
Division of Engineering
SUBJECT:
PUMP FLYWHEEL INTEGRITY - V0GTLE UNITS 1 AND 2 Plant Name:
Vogtle Electric Generating Plant, Units 1 and 2 Suppliers: Westinghouse Licensing Stage:
OL Docket Nos.: 50-424/425 Responsible Branch & Project Manager:
LB #4, M. Miller Reviewer:
S. J. Bhatt Requested Completion Date:
September 30, 1984 Description of Task:
SER Input - Pump Flywheel Integrity Review Status:
Complete The Component Integrity Section of the Materials Engineering Branch, Division of Engineering, has reviewed the FSAR Section 5.4.1.1, " Pump Flywheel Integrity."
Based on our evaluation,'we conclude that the flywheel material and design of the pump-motor assembly at Vogtle Units 1 and 2 are acceptable.
Our Safety Review is attached.
I William V. Johnston, Assistant Director Materials, Chemical & Environmental Technology Division of Engineering
Attachment:
As stated cc:
R. Vollmer B. D. Liaw D. Eisenhut W. Hazelton E. Sullivan R. Klecker DISTRIBUTION S. Pawlicki C. Cheng t.
E. Adensam S. Bhatt N O'N' '
M. Miller TNWM*s M?
- SEE PREVIOUS FOR CONC'JRRENC S.
DE:MTEB DE:MTEB DE:b Dl!
ET SBhatt:aj RKlecker BD 'a Wsohnston 9/ /84 9/ /84 9
/84 9/3D/84
T ~ ~~
e- '
. e.
..c....
,%ON NUCLEAR IDANO COMPANY, Inc.
p.a.ser2soo
~'
(
.m a FAu.s.ioAnos.uot'
- 16. Febru*ary' 1982 '
.(~
'5E/SEC Chemical Procedures.
I' Moe-3-82 c
.?
Mr. C. E. McCraken U. S. Nuclear Regulatory Comission Phillips Bldg. Room P.-302. 3
.g.
Bethesda,MD 20014 Referenca:. B. G. Motas, " Evaluation.of.GE. and.SEC Chemical. Procedures.for Post-
' 1
~
accident Analysis of Reactor Coolant Samples", November 1981
Dear. Conrad:
~In ENICO's evaluation of proposed chemical procedures for postaccident analysis-of reactor coolant samples, referenced.above, the presence or absence of radio-logically induced interferences (effects) were noted for chemic~al procedures with available test data. For chemical procedures without available test data, it was noted whether radiologically induced interfarancas were anticipated or not.
In tha report a genereT statement was included which indicated that the basis for determining whether radiological effects were anticipated or not was past expe-lV riencas of personnel involved.in. the evaluation. J In response tot your recent request for a brief amplification of'the basis used.tc datarmine whether or not radiological effects on the individual procedums are anticipated or not, I have included in the enclosed table a list of the procedures and the respective basis used. Again it should be emphasized that the evaluation for these procedures are professional judgements;. they have not been confirned
~ e with Taboratory tasting. As recomended, in the: report the procedures should ba Taboratory tasted tat confirm the existance or nonexistance of radiologically in-duced effects.
If you require additional information please call. (FTS 583-3577).
Sincarely,.
C4.l.b eW.
u E
G. Motes
~
Radiochemistry BGM:aar Enclosure
- cc:
B. Barnhart, NRC
' /
G.L. Vivian, 00E-ID
~
Qw f,a r _ f rv_ /
~
wVYX-WV7 / '6
-,_e..
_.4
'* 1
?_
l "i
i Attachmeae
. T%
).
Hoe-3-f
[.
BASIS FdR RAD 101.0GICAL ETFECTS '.,.4 SEC/GE CHF.HICAL PROCEDURES Page !
l Method / Analysis Radiological Effects Anticipated Basis l
I Fluomborate'SIE/ Boron Unknown No Chemistry of the procedure and SEC 11terature review of f
radiological effects on similar materials used in con-l struction of the SIE.
' Curcumin Spectrophotometric / Unknown.
No Chemistry of the procedure.
. Baron).
l Plasma Spectro' scopy / Boron Unknown Independence of procedure chemistry.
' No L
Carminic Acid Spectro-
/
j Chemistry of the procedure.
L ;; photometric /Bo mn No
- Mannitol Titrimetry / Boron Unknown No themistry o# the recedure, SEC literature review of radiologicaleffectsonpHprobesIghactivitysamples.
and prior use of the l
procedure'to analyze reldtively h i
,. Boronometry/ Boron No
-4 Independenc's of pmendure chemistry and plfor usage of boronometert in high radiation fleIds.
l '-
i
) '.
)
lon Chromatography / Boron Unknown No r,i
. ' Chemistry of the method and prior use of a similar method
[
}.~
i toanalyzerelativelyhighsetivity($1R) samples,includ-1 ing a diluted postaccident THI-2 sample bO.5R)
) 6-
.a. Ion Chromatography / Chloride Unknown No.
'themistry'# the method and > ribe use of a steller method
)
)'-
toanalyterelativelyhighactivitysamples including p
, a diluted; postaccident THi-2 temple bO.5RJ.
e o
stc 1 terature review of radiological effects on similar Smcific lon Electrode /
Unknown-No f Coloride ;
mater' 414.uted to construct the electmde.
L~'
Turbidimetric / Chloride has Mborator[ tests by SEC/NU$.
L.-
~
Colorimetric/ Chloride Unknown Yes J
i.aboratory tett~by $EtfNUt on the turbidimetric method..
Which 18 ettentially te samt as the colorimetric melled.
_-0 a
O
/
TABl.E
- Noe-3 -
page 2'~
BASIS FOR RA010 LOGICAL EFFECTS ON'SEC/GE CllEMICAL PROCEDURES f.M) v, i
c
[
Hethod/ Analysis Radiological Effacts Anticipated Basis t
l.
Titrimetric / Chloride' Unknown No chemistry of the procedure and SEC laterature review of; '.'
l
~
radiological. effects on pH probes.
f:-
Spectrophotometric /
Unknown Vos-Chemistry af the procedure.
o Chloride 4.
'No Nature of measurement method and prior use of GC to 2
Gas Chromatography /
Unknown
~ '
toanalyzerelativelyhighactlyttysamples(4.5R)
- Hydrogen No Nature of measurement method and prior use~ of GC to '
Gas Chromatograph /0xygen Linknown analyzerelativelyhighactivitysamples(d.5R) h110w Spings Analyser /
Unknown b
SEC literature review of the radiolbgical effects on
.' ~
the materials of construction of the sample probe.
- l. Laboratory tests by GE, the SEC literatur.e revieh of
.j L
l Conductivity Meter /.
No r- * :
the radiological effects on materials of-probe con-Conductivity struction and the SEC personnel interviews of in-2-
i dividuals with prior experience with siellar measurements, pli paper /pH Ves i.aboratory tests performed by GE, 1
i Literature review by SEC of the radiological effects on-i pH probe /pH flo the materials of probe construction, SEC personnel in
')
I terviews with individuals with prior experience with similar measurements and connon use of pli probes in high radiation fields.
~
Y g
l l
l l
i l
i i
=
i
-