ML20077D088
| ML20077D088 | |
| Person / Time | |
|---|---|
| Site: | Limerick  |
| Issue date: | 07/20/1983 |
| From: | Bradley E PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | Schwencer A Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 8307260350 | |
| Download: ML20077D088 (8) | |
Text
w
~
9 PHILADELPHIA ELECTRIC COMPANY 2301 MARKET STREET P.O. BOX 8699 PHILADELPHIA. PA.19101 EDW ARD G. B AU ER JR.
(2151841-4000 vics emesinant asso esmanas cousessL EUGENE J. BR ADLEY assoceava eensnah counset DONALD BLANKEN RUDOLPH A. CHILLEM8 E. C. KI R K H ALL T. H. M AH ER CORNELL PAUL AUERB ACH messerant esMunah COUNosh July 20, 1983 EDW ARD J. CULLEN. JR.
THOM AS H. MILLER, JR.
IRENE A. McKENN A mesesvant coumont Mr.
A.
Schwencer, Chief Docket Nos. 50-352 Licensing Branch No. 2 50-353 Division of Licensing U.
S.
Nuclear Regulatory Commission Washington, D.C.
20555
Subject:
Limerick Generating Station, Units I&2 Request for Additional Information (RAI) from the Mechanical Engineering Branch Re ference s :
(1)
- Letter, A.
Schwencer to E.
G.
- Bauer, Jr.,
dated April 11, 1983 (2)
Telecon between R.
Kirkwood and M.
Humm (NRC) and T.
Shannon and L.
Pyrih (PECO) on July 14, 1983 File:
GOVT l-l (NRC)
Dear Mr. Schwencer:
The reference letter transmitted RAI 210.92.
Enclosed is our revised response and related page changes which will be incorporated in the August revision of the FSAR as agreed upon in the reference telecon.
Sincerely, f
Eug e J Bradley JLP/gra/27 Enclosure Copy to:
See Attached Service List 8307260350 830720 PDR ADOCK 05000352 A
r cc: - Judge Lawrence Brenner
. (w/o enclosure)
Judge Richard F. Cole (w/o enclosure)
Judge Peter A. Morris (w/o enclosure)
Troy B.-Conner, Jr., Esq.
(w/o enclosure)
Ann P. Hodgdon (w/o enclosure)
Mr. Frank R. Romano (w/o enclosure).
Mr. Robert L. Anthony (w/o enclosure)
Mr. Marvin I. Lewis (w/o enclosure)-
Judith A. Dorsey,-Esq.
(w/o enclosure)-
Charles W. Elliott, Esq.
(w/o enclosure)
Jacqueline I. Ruttenberg (w/o enclosure)
- Thomas Y. Au, Esq.
(w/o enclosure)
Mr. Thomas Gerusky (w/o enclosure)
Director,. Pennsylvania Emergency Management Agency (w/o enclosure)
Mr. Steven P. Hershey (w/o enclosure)
Donald S. Bronstein, Esq.
(w/o enclosure)
Mr. Joseph H. White, III (w/o enclosure)
(w/o enclosure)
David Wersan, Esq.
~
Robert J. Sugarman, Esq.
(w/o enclosure)
Martha W. Bush, Esq.
(w/o enclosure)
Spence W. Perry, Esq.
(w/o enclosure)
Atomic Safety and Licensing Appeal Board (w/o enclosure)
~
Atomic Safety and Licensing Board Panel (w/o enclosure)
Docket and Service Section (w/o enclosure)
E L
r l
L r
, tw..,
.w
-e,-
a,w-
.-~s-,
w
-w n.n-w-,
,--,~r--
.r,-
LGS FSAR OUESTION 210.92 (Table 3.2-1, Page 3 of 38, Residual Heat Kemoval System, Item 6)
The piping, containment spray line (inside containment) is incorrectly classified Quality Group C.
To be acceptable, this piping and ring headers should be classified Quality Group B and constructed to Section III, Class 2 (or equivalent).
Q'
~-
s The piping containment spray line (inside containment) is designed to ASME Section III, Class 3/Ouality Group C standards, which is adequate for the reasons discussed in the response to Question 480.7.
,./
F,6fc 3. 2. - l '.
[1ay been chan3d
+*
Wmi
.G aa(! & C,roup etass; S iu< % n,
~
J s'f '
! ( '.
[
i 210.92-1 Rev. 20, 05/83
flow rate of one spray system is 500 gpm.
With two I
l spray systems in operation,.the required efficiency would be halved.
The spray efficiency is typically on
'l the order of 0.7 and, therefore, even with a single system is' operation, the termination of the wetwell (and.
drywell) pressure increase ~is assured.;' ]
-Required Efficiency of i
Spray Temperature 1-Wetwell S6 Pay System 700F 0.22 l
900F 0.24 -
l A 4 k __lh & 0 c.
The wetwell spray system is to be used to miti, gate the g consequences of suppression pool steam byr, ass:nigh pressure.
Limerick is in compliance.with the guidelines)'
, of SRP 372.2 and Regulatory Guide 1.26 becaur.;e the I
safety-related design basis for"the containment spray system is that it provide a'means of pressure reduction, not heat removal.
lThereforeseismicCategoryI/QualityGroupCstandards jare adequate for the wetwell spray headers.
The
/ containment spray system is also designed to be. operable!
D, l following a loss of offsite power plus a single failure. i L
j I
- As discussed in Section.6.2.1.1.5.2,. use of the containment sprays is onlp one option-available io the
~
i operator to respond to high pressure reculting from steam bypass of the suppression pool..
The Quality Group designations for the co'ritainment spray i system have not changed since the PSAR was submit'ted.
l; t
d.
Section 6.2.6.5.1 and Table 14.2-4 have been changed -to provide the requested information.
=e.
A visual inspection will' be conducted prior to each integrated leak rate test to detect possibls,drywell-to-suppression bypass leakageJpathc.
A visual'i'nspection of each primary containment 1va'cuum relief valve asse'nbly will be conducted during'each' refueling outage to verify that it is clear of foreign mutter.
f.
The vacuum relief valve position indicator system has adequate sensitivity to detect s' total valve opening, for all valves, that is less than-the bypass capability
(
for a small break.
Valve opening is detectable at a
- (
disk lift of 0.06 inches or greater above2 the valve 4
480.7-5'
~
Rev. 14, 12/82
e g ?'C y,s.
- p:
W
. r.,,
n.
- f 4
l'
,./i r
7=.
k
/'
Tajk 3. I has Tblu ejana,d c.
o MS Y&
l bCVHf al613hj cg/jos o
e
- M d
' Q A
Muh 4
5'*
i-:
er l
w 4
E*
T#
h m em.ww.
e.%
m
~~----:-
n
--.. - ~ -
.-.._n,,,.
t t
11f 3WCONPONENT [ 40 ]
3 2.
PCIC barometric condenser 3.
Piping and valves, RCPB 4.
Piping within outermost containment isolation valves, discharges te suppression pool 5.
Piping and valves, other safety-related 6.
Portion of piping for RCIC turbine drains 7.
Deleted 8.
Pumps, RCIC condensate and condenser vacuna 9.
Pump, RCIC
- 10. Electrical modules, with safety function B. Besidual neat _Eemoval system 5.
1.
Heat exchangers, primary (process) side 2.
Heat exchangers, secondary
(
(service water) side 3.
Piping, reactor vessel head spray line, beyond first isolation valve 4.
Piping, RCPB 5.
Piping, containment spray line (inside containment) 6.
Piping and valves, other safety-related 7.
Valves, isolation 8.
Pumps 9.
Motors, pump
- 10. Mechanical components J
] p,
- 11. Electrical modules, with safety
.\\ v function A 3
_. 3 _
)
,\\
\\
C.
Q2re_ Spray System 6..
v 5A 1.
Piping and valves, RCPB 2.
Piping and valves, other safety-t..o.
related 3.
Pumps 4.
Motors, pump 5.
Electrical modules, with safety function D.
High__ Pressure Coolant _Ipiection__JgPCI) frgtem 6.3 1.
HPCI turbine
- gg,4valjable On g
2.
Piping and valves, RCPB
(
.sg__
,r.--uut Card 3.
Piping and valves, other safety-related
}
t i
L35 FSAR I
TABLE 3.2-1 (Cont ' d)
(Page 3 Of 38)
OUAIlTY SOURCE GROUP PRINCIPAL OF LOCA-CLASSI-CODES AND SEISMIC 0-1)@
SUPPLY TION FICATION STANDARDS CATEGORY LIST WD QB - L332.
L232 L132..--
- L!!32---
L532----
Lk32 9933EGE GE R
D B31.1 II N
P C
A III-1 I
Y
[ 7] [ 9] [48]
P C
D B31.1 I
Y
[48]
P P
B III-2 I
Y
[ 9] [48]
P R
D B31.1 I
Y
[ 55 ]
I I
GE R
D MF STD II N
GE R
B III-2 I
Y
[ 11 ], [ 12 ]
344, 279 l 4.7 i
GE R
B III-2/TEMA C I
Y q
GE R
D VIII-1/
}
I Y
q TEMA C l
P C
B III-2 I
Y
[48]
P C
A III-1 I
Y
[7] [9] [48]
P C
g6 III-3 I
Y
[ 48 ] [,68]
P R
B III-2 I
Y
[48]
GE/P C,R A,B III-1,2 I
Y
[7]
GE R
- B III-2 I
Y GE R
NEMA-M3-1 I
Y CE R
B MF STD I
Y
[11]
IEEE-323,I I
Y
[ 11], [ 12 ]
P/GE R,CS 344, 279 }
f l
s P/GE C
A III-1 I
Y
[7] [9] [48]
P R
B III-2 I
Y
[9] [48]
GE R
B III-2 I
Y GE R
NEMA-M3-1 I
Y
[ 11 ], [ 12 ]
344, 279 GE R
MF STD I
Y
[17]
P C
A III-1 i
I Y
[7] [9] [48]
P/GE F
B III-2 I
Y
[9] [48]
I i-Fev. 20/05/33 i
88072&035A Ol
(Page 38 of 38)
{
[54]The basis for classification of non-ASME Section III equipment as Quality Group C is given in Section 3.2.2.h.
[55]Short welded sections of ANSI B31.1 piping in the turbine stop valve seat drains, stop valve leakoffs, governing valve leakoffs, casing drains, ring drains, chest drains, and turbine shaft seal leakoffs that cannot be hydrotested will be in-service tested to ANSI B31.1 requirements and the welds will be surface examined.
[56]The basis for classification of non-ASME Section III equipment as Quality Group C is provided in Section 3.2.2.1.
[57]The basis for classification of non-ASME Section III equipment as Quality Group C is provided in Section 3.2.2.j.
pechased - and eens + rue.Ted
-to
[ge3
- -Wu s piping sa, O aal.}
G,.e,u p C (4jaireneds and we s subsqueafly up p acf %
$4a l,'+y Grou,o by vclJme +r;<.alf uamiriang "Il
- e. ;rc umferen cia l welds e,nr 4 m-lnde s a s;r,9 rud;syaphy,
y;sual asa mind. n
- w. il be perfvned in serv:ce in a e ergfa,,g wi+k 4 h c-. J-n serv et.e.
~En speen ion Prog ra m.
(
Rev. 21, 06/83