ML20029C652
| ML20029C652 | |
| Person / Time | |
|---|---|
| Site: | 05200001 |
| Issue date: | 04/19/1994 |
| From: | Fox J GENERAL ELECTRIC CO. |
| To: | Poslusny C Office of Nuclear Reactor Regulation |
| References | |
| NUDOCS 9404210179 | |
| Download: ML20029C652 (15) | |
Text
.
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GENuclear Energy l
GeneralE!ectric Comtwny 115 Curtver Avenue. San. lose. CA 95125 April 19,1994 Docket No.52-001 Chet Poslusny, Senior Proj,ect Manager Standardization Project Directorate Associate Directorate for Advanced Reactors and Ijcense Renewal Office of the Nuclear Reactor Regulation
Subject:
Submittal Supporting Accelerated ABWR Schedule -
Radiation Protection Modifications to SSAR and CDM
Dear Chet:
L Enclosed are SSAR and CDM markups modifying selected pages of SSAR Chapter 12 and l
CDM Section 3.2.
l Please provide a copy of this transmittal to Roger Pedersen.
Sincerely, "DD & &
Jack Fox Advanced Reactor Programs cc:
Alan Beard GE)
IIal Careway GE)
Norman Fletcher DOE)
Roy Louison GE)
Joe Quirk GE) 1 0
9404210179 940419 PDR ADOCK 05200001
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SSAR MARKUPS
~.
t 23A6100 Rev. 4 ABWR standardsafetyAnalysis Report (5) Separation of more highly radioactive equipment from less radioactive equipment and provision.of separate shielded compartments for adjacent items of radioactive equipment.
Qe cd Provision (gccess hatches for installation or removalgplant co i
oe (6)
(7) Provision of design features such as the Reactor Water Cleanup (CUW)
System and the condensate demineralizer to minimize crud buildup.
o 12.1.2.2 Equipment Design Considerations for ALARA Exposures 12.1.2.2.1 General Design Criteria No specific instmctions have been given to component designers and engineers regarding ALARA design as provided by specific Acceptance Criterion II.2 of SRP Section 12.1. However, the engineering design procedures require that the component design engineer consider the applicable Regulatory Guides (including Regulatory Guide 8.8) as a part of the design criteria. In this way, the radiation problems of a component or system are considered. A summary survey of the components designs was made to determine the factors considered. The following paragraphs cite some examples of design considerations made to implement ALARA 12.1.2.2.2 Equipment Design Considerations to Limit Time Spent in Radiation Areas (1) Equipment is designed to be operated and have its instrumentation and controls in accessible areas both during normal and abnormal operating conditions. Equipment such as the CUW System and the Fuel Pool Cleanup (FPC) System are remotely operated, including the backwashing and precoat operations.
(2) Equipment is designed to facilitate maintenance. Equipment such as the RHR heat exchanger is designed with an excess of tubes in order to permit plugging of some tubes. The heat exchanger has drains to allow draining of the shell-side water. Some of the valves have stem packing of the cartridge type that can be easily replaced. Refueling tools are designed for drainage and with smooth surfaces in order to reduce contamination. Vessel and piping insulation is of an easily removable type.
(3) The material selected for use in the system have been chosen to fulfill the emironmental requirements. Valves, for example, use grafoil stem packing to reduce leakage and maintenance.
(4) Past experience has been factored into current designs. The steam relief valves have been redesigned as a result ofinsenice testing.
l Ensuring that Occupational Radiation Exposures are ALARA - Amendment 31 1233
23A6100 Rsv. 4 ABWR standard saretyAnalysis Report 12.2.1.2.1.1.3 Core Boundary Neutron Fluxes Table 12.2-2 presents peak axial neutron multigroup fluxes at the core equivalent radius. The core-equivalent radius is a hypothetical boundary enclosing an area equal j
to the area of the fuel bundles and the coolant space between them. The peak axial flux occurs adjacent to the portion of the core with the greatest power. While the flux within any given energy group is not known within a factor of 2, the total calculated core boundary flux is estimated to be within 50 %
12.2.1.2.1.1.4 Gamma Ray Source Energy Spectra Table 12.2-3 presents average gamma ray energy spectra thermal per watt of reactor power in both core and non-core regions. In Table 12.2-3, part A, the energy spectra in the core are presented. The energy spectra in the core represent the average gamma ray 3
energy released by energy group inJ/cm /s/MW thermal. The energy spectra in 3
J/s/MW thermal /cm can be used with the total core power and power distributions to obtain the source in any part of the core.
l The gamma ray energy spectra include the fission gamma rays, the fission product l
gamma ray and the gamma rays resulting from inelastic neutron scattering and thermal neutron capture. The total gamma ray energy released in the core is estimated to be l
accurate to within 10E The energy release rate above(66]may be in error by as much as a factor of 2.
O,+F pc.ol l
Table 12.2-3, part B, gives a gamma ray energy spectrum inJ/s/W in spent fuel as a i
function of time after operation. The data were prepared from tables of fission product l
decay gamma fitted to integral measurements for operation times of 10 s, or 8
j approximately 3.2 years. To obtain shutdown sources in the core the gamma ray energy l
spectra are combined with the core thermal power and power distributions. Shutdown sources in a single fuel element can be obtained by using the gamma ray energy spectra and the thermal power the element contained during operation.
Table 12.2-3, part C, gives the gamma ray energy spectra in the cylindrical regions of the j
reactor from the core through the vessel. The energy spectra are given in terms of 3
l J/cm / s/W at the inside surface and outside surfaces of the region. This energy i
spectrum, multiplied by the core thermal power,is the gamma ray source. The point on the inside surface of the region is the maximum point within the region. In the radial direction, the variation in source intensity may be approximated by an exponential fit to the data on the inside and outside surfaces of the region. The axial variation in a region can be estimated by using the core axial variation. The uncertaintyin the gamma ray energy spectra is due primarily to the uncertainty in the neutron flux in these regions. The uncertainty in the neutron flux is estimated to van / rom approximately f
250% at the core boundarv to a factor ofi3 at the outside of the vessel. The calculations were carried out with voids beyond the vessel."
Radiation Sources-Amendment 34 12.2-3 l
23A6100 Rsv. 4 l
ABWR stand:rds:letyArlysis R:p:rt Table 12.2-20 Comparison of Airborne Concentrations with 10CFR20 Concentration Limits Annual Average Airborne Maximum P ration Technical cd' Release Concentration Specification 10CFR20 3
3 l
Nuclide (MBq/yr)
(MBq/cm )
(MBq/cm )
MPC l
Kr-83m 3.1E+01 2.0E-18 5.2E-17 i.1 E'-0 l.% bO 7
/ 3 fE-Of l
l Kr-85m 7.8E+05 4.8E-14 7
13 3.7E-09 l
Kr-85 2.1E+07 1.3E-12 1.3E-12 1.1E-08
/ $ 6'O i l
Kr-87 9.3E+05 5.9E-14 1.6E-12 7.4E-10
- 7. #l b'O E 5 l
l Kr-88 1.4E+06 8.9E-14 2.4E-12
.4E-10
/.tE-o9-p E I b'OY l
Kr-89 8.9E+06 5.5E-13 1.5E-11 1.1E-09 l
Kr-90 1.2E+01 7.8E-19 2.1E-17 1.1E-09
~/- @ b ~ I l
Xe-131 m 1.9E+06 1.2E-13 1.2E-13 1.5E-08
- 7. p & 06 :
l Xe-133m 3.2E+03 2.0E-16 3.3E-16 1.1E-08 j i ?E-08 l
Xe-133 8.9E+07 5.5E-12 4.1E-11 l 1.1E-08 CI b ~ O
8 Ib'O l
l Xe-135m 1.5E+07' 9.2E-13 2.4E-11 1.1E--09 l
l Xe-135 1.7E+07 1.0E-12 2.8E-11 3.7E-09 -l t,g6-O@
l Xe-137 1.9E+07 1.2E-12 3.1E-11 1.1E-09 I / 6-o 3 l
Xe-138 1.6E+07 1.0E-12 2.5E-11 1.1E-09 9.O6-0Y l
Xe-139 1.5E+01 9.6E-19 2.6E-17 1.1E-09 !
f.7 6 ~lO
/< b6'OY l
l-131 9.6E+03 5.9E-16 1.8E-14 3.7E-12 l1.1E-11 l bE-D5 l
l-132 8.1E+04 5.2E-15 1.6E-13 l
l-133 6.3E+04 4.1E-15 1.2E-13 i 1.5E-11 I TL7 b.O Y l
l-134 1.4E+05 8.9E-15 2.7E-13 2.2E-11 6Ob~Of l
l-135 8.9E+04 5.5E-15 1.7E-13
! 3.7E-11
/* I O'OY 2h06 1
13 1
13 7.4E-09 (
- 1. 3 E-o l
C-14 3.4E+05 2.2E-14 2.2E-14 3.7E-09 00/E'Obj l
Na-24 1.5E+02 9.2E-18 9.2E-18 1.8E-10 E O b-' M '
2.2E-18 7.4E-11 3.9 6'OE l
P-32 3.4E+01 2.2E-18 l
Ar-41 2.5E+05 1.6E-14 1.6E-14 1.5E-09 I I b'O
$ 98' 03 '
l Cr-51 1.3E+03 8.1E-17 16 1.5E-08 Radiation Sources--Amendment 34 12.2-63
23A6100 R2v. 4 ABWR standard sareryAnalysis neport Table 12.2-20 Comparison of Airborne Concentrations with 10CFR20 Concentration Limits (Continued)
.l l
Annual Average Airborne Maximum F< a mn Technical M
Release Concentration Specification 10CFR20 3
3 Nuclide (MBq/yr)
(MBq/cm )
(MBq/cm )
MPC 3
16 6.7E-1 3.+E e7 gE+02 1[-17
[
Mn-54 f
j.
j Mn-56 1.3E + 02 8.5E-18 8.5E-18 7.4E-10
/.. I E~ ~ O C
/. N -OE l
Fe-55 2.4E+02 1.5E-17 1.5E-17 l1.1 E-09 l
Fe-59 j
+01 1
-18
.YE-17
'1.8E-10 C., E-c 8 l
Co-58 8.9 E +01 5
-18 8
-17 1.1 E-09
- 7. 3 E -CJ l
Co-60 40E+02 d'17 d-16 3.7E-10
$.'$ E-Ub 5
a.I
- 1. +
l Ni-63 2.4E-01 1.5E-20 1.5E-20 7.4E-11 A.I E to l
Cu-64 3.7E+02 2.3E-17 2.3E-17
.1.5E-09 l- 0 b C T h+02 d-17 ti![d-16 7.4E-11
'lY b-O7 l
Zn-65
&I Y1.s 6-7 l
Rb-89 1.6E +00 9.6E-20 9.6E-20 1.1E-09 E? E"fI l 1 b*
l Sr-89 2.1E+02 1.3E-17 3.5E-20 1.1E-11 I5~E~O7 l
Sr-90 2
+00 1.6E-19 1.
--18 1.1 E-12 l
Y-90 1.7E+00 1.1 E-19 1.1E-19 1.1E-10
- 9. L. 6 ' I O 3.3E-10 f13 E'O 7 l
Sr-91 3.7E+01 2.4E-18 2.4E-18 3.7E-10 f.f, O [~ C4 l
Sr 92 2.9E+01 1.8E-18 1.8E-18 l
Y-91 8.9E+00 5.5E-19 5.5E-19 3.7E-11
(, f E -CW l
Y-92 2.3E+01 1.4E-18 1.4E-18 3.7E-10 3.9E-v0 l
Y-93 4.1 E+01 2.6E-18 2.6E-18 1.8E-10 l N'O8 (t.1[55 3 #
3.7E-11 9.YE'OF g4b+01
-18 l
Zr-95 E-Ib
.S 'l 3 *1 (6.3 N "
44.1 E-1F"'
-16 1.1 E-10
- l. 7 t' - U 7 l
N b-95
- 3. l WCC b.5 E-87 T?
2.6E-10 a '/ L ~ O /.
l Mo-99
'B.6E+ F (3.5f-172.-
Q(88E76*
A t:<od m) 4 :E-tu TG IE l
Tc-99m 1.1 E + 01 7.4'E-19 7.4E-19 1.8E-08 3.,/E-!I iib-18 16E'iP#
1.1 E-10
'/06-uY l
Ru-103 13E3 ~
(G3
/. 3 6 t C' G s.C c-lb l
Rh-103m 4.1 E +00 2.7E-19 2.7E-19 7.4E-08,
3L E - /.'
l Ru-106 7.0E-01 4.4E-20 4.4E-20 7.4E-12 6 i F-( f l
Rh-106 7.0E-01 4.4E-20 4.4E-20 1.1 E-09 T. ' 6 12 2-64 Radiation Sources-Amendment 34
23A6100 Rvv. 4 ABWR standard Safety Analysis Report Table 12.2-20 Comparison of Airborne Concentrations with 10CFR20 Concentration Limits (Continued)
Annual Average Airborne Maximum Fr~n n Technical c, {
d Release Concentration Specification 10CFR20 3
3 Nuclide (MBq/yr)
(MBq/cm )
(MBq/cm )
MPC l
Ag-110m 26E-02 (BE-21 (4T8EW' 5.1E-11
<-/.9E-fg
~
~
j tali 1.+C-I?
1[+00 6
4.1 E-19 1Q-17 2.6E-11 l L E-O F i
l Sb-124 7
3
~
l Te-129m 8.1E+00 5.2E-19 5.2E-19 3.7E-11 18 t OS l
!.2E-10 T S bIC 2
l Te-131m 2.8E+00 1.8E-19 1.8E-19 l
Te-132 7.0E-01 4.4E-20 4.4E-20
'1.5E-10 '
3-iE -ID p.
n (1. YC -i 7 4.1EM
'1.5E-11
'/ ? T d/
@$E+IO8' CiE TP l
Cs-134
?
fD %
l Cs-136
@9E~~FJ*
gE~T9>"
2.2E-10 0
,c-go.
lb
~~
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3,f~G s?
I,', p~2
A sol
-os E-1G-TB-1.8E-11 l
Cs-137 47 fd-a.5 tE rod.
a.:LfI-17
- ~/6 r
l Cs-138 6.3E+00 4.1 E-19 4.
-19 1.1E-09
?. L. ~~ (L' a
E-17 CB3E~16A 3.7E-11
- l. ?E~d l
Ba-140
.8602+
@7 I.
- 103 la.
1 9 W-l?
- >. s r v e l
La-140 6.7E+01 4.1E-18 4.1E-18 1.5E-10 I i E ~
3[+02 2 [ -17
[3 16 1.8E-10 l
Ce-141
.t-I s.
j l
Ce-144 7.0E-01 4.4E-20 4.4E-20 7.4E-12 L'
' a *3
~
! b -I' l
Pr-144 7.0E-01 4.4E-20 4.4E-20 1.1E.-09 {
3.7E-10 f I 5 E T"!
l W-187 7.0E+00 4.4E-19 4.4E-19 l
l Np-239 4.4E+02 2.7E-17 2.7E-17 7.4E-10}
3 75-CT 4
.i i
I i
1 i
4 Radiation Sources-Amendment 34 12.2 65 4
J 23A6100 Rsv. 4 ABWR standardsarery Analysis neport k
Table 12.2 27 Activity in the Turbine Condenser 4
l Isotopes MBq lsotopes MBq KR-83M (f.;.bv.3 23E~0t NA-24 /16 03 19E-03 1
W P-32 s.? F. ec D 7.7E-05 KR-65M i 77 #6 4 4.5E-01li KR-85 c 7 E rO1 21.8E-03 CR-51 7..G eo a 2.3E-03 : -
KR 87
.C L.E4v f: 1.5E + 00' -
MN 54 /. v6 <co f 2.7E-05 i
KR-88 y e i. evv : 1.5E+00 MN 56 7 ? E ron! 2.1E-02 '
KR-89 S,y Er o r 7.8E+00l.
FE-55 l.yEtul 3.8E-04 KR-90 Q '/ (r,n,"
7.9E +00 FE-59 4 I E o/
1.1E-05 KR-91 n.i' E +v.y 2.2E+00 CO-58 ( 9 6rOO 7.7E-05 XE-131M.Wi:<of 1.5E-03 CO 60 o~1E eac--
1.5E-04 XE-133M S rE,cq 2.2E-02 NI-63 l. <* Don, 3.8E-07 XE-133 4 en,vy 6.4E-01 CU-64 1 *tE rM 1.2E-02 XE-135M,EE
-f 1.9E+00 ZN-65 >: 5'Estt
- 7.7E-05 XE-135 (,. 3g,c,f 1.7E+00 SR-89 f.Y IdrOD 3.8E-05 '
XE 137 3 L 6rcJ 9.8E+00 SR-90 /.UE -UI 2.7E-06 XE-138 't r-En;r 6.6E+00 Y-90 I-L6-01 2.7E-06 XE-139 J,gE,,;.g - 9.3E+00 SR-91.f.9E rol 1.6E-03 XE 140 / M eos 3.6E+00 SR-92 / 0 F. eD ? 4.3E-03 XE 144 / TFw.d 3.9E-03 Y-91 E. L E -og 1.5E-05 Total M Cr'~ r/4 5.5E+01:
Y-92 9. 3 E r0 t 2.5E-03 Y-93 Of E, o/ 1.6E-03 1-131
/.Cc to : 2.8E-02 ZR-95 /.I E-DI 3.0E-06 l-132 1 9Ers, 2.4E-01 NB-95 l. I E-u/
3.0E-06 l-133
? O E n. 3 1.9E-01 MO 99 i ?E, u / 7.7E-04 1-134 i N* 't 4.1 E-01 TC-99M 'l Pu! 7.7E-04 l-135 l.t f v f 2.7E-01 RU-103 'l E'E--01 7.7E-06 Total
" ' E ew 1.1E+00~
RH 103M ME'L/ 7.7E-06 ;
RU 106 % /FDC 1.1E-06j 12.2-74 Radiation Sources-Amendment 34
23A6100 Rsv. 4 4
ABWR standard safetyAnalysis Report Table 12.2 27 Activity in the Turbine Condenser (Continued)
Isotopes MBq lsotopes MBq l
RB-89 8.5E+01 RH-106 4.1 E-02 l
CS-134 3.7E-01 AG-110M 1.4E-02 l
CS-136 2.6E-01 TE-129M 5.6E-01 l
CS-137 1.0E+00 TE-131M 1.4E+00 l
CS-138 1.7E+02 TE-132 1.4E-01 D.' 6 + O2-BA-140 5.6E+00 l
Total c
l LA-140 5.6E+00 l
N-16 1.4E+07 CE-141 4.1 E-01 l
CE-144 4.1 E-02 l
H-3 4.4E+04 PR-144 4.1 E-02 l
W 187 4.4E+00 l
NP-239 1.1 E+02 l
Total 2.0E+03 4 Inc\\wde 5 t S odopC 3 Mro w p Avscu S f a $ c. (r@t ha 5\\b) l l
l l
Radiation Sources-Amendment 34 12.2 75
p l
23A6100 Rsv. 4 1
l ABWR Standard Safety Analysis Report i
l l
area. The relationship between radiation zone designations and accessibility requirements is presented in the following tabulation:
Dose Rate j
Zone Designation (pGy/h)
Access Description l
A s;6 Uncontrolled, unlimited access I
l l
B
< 10 Controlled, unlimited access l
C
< 50 Controlled, limited access,20 h/wk l
D
< 250 Controlled, limited access,4 h/wk 3
< l.0E+0t r Controlled, limited access, I h/wk l
l E
1 3
l F
21.0E+0&f' Controlled infrequent access.
Authorization required.
l The dose rate applicable for a particular zone is based on operating experience and represents design dose rates in a particular zone, and should not be interpreted as the expected dose rates which would apply in all portions of that zone, or for all types of l
work within that zone, or at all periods of entry into the zone. Large BWR plants have been in operation for three decades, and operating experience with similar design basis numbers shows that only a small fraction of the 10CFR20 maximum permissible dose is received in such zones from radiation sources controlled by equipment layout or the structural shielding provided. Therefore, on a practical basis, a radiation zoning approach as described above accomplishes the as low as reasonably achievable objectives for doses as required by 10CFR20.1 (c). The radiation zone maps for this plant with zone designations as described in the preceding tabulations are contained in Figures 12.11 through 12.3-3,12.3-5 through 12.3-11, and 12.3-37 through 12.S53.
Access to areas in the plant is controlled and regulated by the zoning of a given area.
l Areas with dose rates such that an individual would receive a dose in excess of 1 mGy in l
a period of one hour are locked and posted with "High Radiation Area" signs. Entry to l
these areas is on a controlled basis. Areas in which an individual would receive a dose in l
excess of 50 Gy up to 1 mGy within a period of one hour are posted with signs indicating that this is a radiation area and include,in certain cases, barriers such as ropes or doors.
l Radiation Protection Design Features - Amendment 34 12.3 9
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