ML20091R783
| ML20091R783 | |
| Person / Time | |
|---|---|
| Site: | Beaver Valley |
| Issue date: | 01/21/1992 |
| From: | DUQUESNE LIGHT CO. |
| To: | |
| Shared Package | |
| ML20091R774 | List: |
| References | |
| NUDOCS 9202060059 | |
| Download: ML20091R783 (14) | |
Text
.~,
TABLE 3.3-13 (Continued) en h
MINIlWM E
CHANNELS Ii85TRUMENT OPERABLE APPLICABILITY PAeAMETER ACTION
<?
{ 3.
Elevated Release.(2HVS-RQ109A & 8) a Noble Gas Activity Monitor 1
Radioactivity Rate 29, 30 ***
E Measurement Z
b.
Particulate Activity Monitor 1
32
~
c.
Process Flow Rate Monitor 1
Process Flow Rate 28 Measurement d.
Sampler Flow Rate Monitor 1
Sampler Flow Rate
.28 Device Measurement m[
4.
Decontamination Building Vent FRMQ-RQ301A & B) m
[
S Lw a.
Noble Gas Activity Monitor 1
Radioactivity Rate 29 Measurement E~
o b.
Particulate Activity Monitor 1
32 s
Process Flow Rate 28 c.
Process Flow Rate Monitor 1
-.6 Measurement ELETE a
Sampler Flow Rate Monitor 1
Sampler Flow Rate 28 Measurement
- During release via this pathway.
- During purgirig of reactor containment via this pathway g2 gg mg2 P
TABLE 3.3-13 (Continued)
)
I b
MINIMUM 9
CHANNELS IN5TRtNENT OPERABLE APPLICABILITY PARAMETER ACTION
?E 5.
Condensate Polishing Building Vent
]
(2HVL-RQll2A & B) i E
a.
Noble Gas Activity Monitor 1
Radioactivity Rate 29 Measurement
]
32 no h.
Particulate Activity Monitor 1
1 Process Flow Rate 28
- DELETE h Process Flow Rate Monitor Measurement.
> g Sampler Flow Rate Monitor 1
Sampler Flow Rate 28
^
Measureeent d
6.
Weste Gas Storage Vault j
(2RMQ-RQ303A & B) l o
w D E a.
Noble Gas Activity Monitor 1
Radioactivity Rate 29 j
g Heasurement l
32 b.
Particulate Activity Monitor 1
3 Process Flow Rate 28 DRg h Process Flow Rate Monitor 1
Measurement a
~
Sampler Flow Rate 28 C.
' 'j(.
Sampler Flow Rate Monitor 1
Measurement 7.
Gaseous Waste System Surge Tank Discharge a.
Oxygen Monitor 2
0xygen 31 (2Gv5-0A100A & B)
- During release via this pathway.
- During waste gas decay tank filling operation.
TABLE 4.3-13 (Continued)
E CHANNEL
??
CHANNEL SOURCE CHANNEL FUNCTIONAL 9
INSTRUMENT CHECK CHECK CALIBRATICM TEST
{3.
Elevated Kelease (2HVS-RQ109A & B) a.
Noble Gas Activity Monitor D
M(5),
R(3)(6)
Q(2) l P(5)***
E O
b.
Particulate Activity Monitor W
N/A N/A N/A
~
(.
Process Flow Rate Monitor D
N/A R
Q I
d.
Sampler Flow Rate Monitor D
N/A R
Q n
4.
Decontamination Building Vent (2RMQ-RQ301A & B) 3
.9y 1
a.
Noble Gas Activity Monitor D
M(5)
R(3)(6)
Q(2) w
{ I, b.
Particulate Activity Monitor W
N/A N/A N/A v
E c.
Process Effluent Flcw Rate D
N/A R
0 CELETE 2
Monitor D
N/A R
Q i
I Q h@ Sampler Flow Rate Monitor i
5.
Condensate Polishing Building Vent (ZHVL-RQ112A & D)
Noble Gas Activity Monitor D
M(5)
R(3)(6)
Q(2) a.
b.
Particulate Activity Monitor W
N/A N/A N/A D
N/A R
Q 4- 09ME Q.
Process Flow Rate Monitor g )(
Sampler Flow Rate Monitor D
N/A R
Q
TABLE 4.3-13 (Continued) r, E
CHANNEL 9
CHANNEL SOURCE CHMSIEL FUNCTIONAL INSTRUMENT CHECK CHECK CALIBRATION TEST E 6.
Waste Gas Storage Vault 7
(2RMQ-RQ303A & B) d.
Noble Oas ACliVity Monitor D
M(5)
R(3)(6)
Q(2)
~
b.
Particulate Activity Monitor W
N/A N/A M/A 0
N/A R
Q
. DELETt-
{ Process Flow Rate Monitor h)C Sampler Flow Rate Monitor D
N/A R
Q m
7.
Gaseous Waste System Surge Tank Discharge
-+
S a-Oxygen Monitor D
M/A Q(4)
M g{ y (2GWS-0A100A & B)
E 4
c>
b.
i i
s 1
W 1
e 4
l' I
ATTACIIMI:NT B Boavor Valley Power Station, Unit No. 2 Proposed Technical Specification Chango Na. 61 Hl: VISION OF TABLES 3. 3-13 AND 4. 3-1
- OF SPECIFICATION 3. 3. 3.10 A.
DESCRIPTION OF AMENDMENT REQUEST The propocod amendment would doloto the associated proccan flow rate monitor oporability requirements, no upocified in Tables 3.3-13 and 4.3-13, for the gaseous offluent monitorn 2RMQ-RQ-301, 2RMQ-RQ-303, and 2HVL-RQ-112.
B.
BACKGROUND The procoon flow rato monitors, which would be affected by this proposed
- change, are unod to monitor the flow rate of gaseous offluent from the decontamination
- building, waste gas storage
- vault, and the condonnato polishing building vont pathways.
The Beaver Valley Power Station (BVPS)
Unit No.
2 Updated Final Safety Analysis Report (UFSAR) states that the building ventilation system for those three pathwayn are non-aafety related and are not required to perform any anfoty related function (ace Section 9.4.13 and 9.4.16).
UTSAR Section 11.3.3 titled "Radioactivo Releanos", indicaten that the sourco term for those thrso pathways la not algnificant.
An a result, those pathways are not included in UFSAR tables 11.3-1 through 11.3-4 that list the expected ar.d design rolonnes for each potentially radioactivo pathway.
The procosa flow rato monitor for the condonnato pollahing building vont pathway han had operational difficultica sinco initial plant operation in mid 1987.
The velocity probe for this monitor was installed near an air stream disturbance resulting in orratic roadouta from the monitor.
This factor has resulted in Unit No. 2 entoring technical specification action statomonta for thio monitor at various timca requiring additional surveillanco activitica to be conducted.
Modifications to resolve this problem have boon estimated to be costly and not desirablo based on the aaroty significance of this particular monitor.
C.
JUSTIFICATJON The proccan flow rato operability requirements for 2RMQ-RQ-301, 2RMQ-RQ-303, and 211VL-RQ-112 can be removed from the BVPS Unit No.
2 technical specifications with no adverno offects on the Offalto Dono Calculation Manual (ODCM) dose and doao rato calculations.
DVPS Unit No.
I and Unit No. 2 are currently
- using, and will continue to uno, dcaign maximum system flow rates in ODCM dono and dono rate calculations rather then the proccas monitor flow rates oboorved during normal plant operations.
The 1989 maximum organ dono for gaseous releanea duo to particulates and radiciodines from these three pathways resulted in loan than 0.1%
of the combined Unit Nos. I and 2 technical specification yearly limit of 15 mrem for each unit.
The Unit No. 2 UFSAR
ATTACHMENT B, continued proposed Technical Specification Change No. 61 Page 2 indicates that the source term for theno three pathways are not significant.
These monitors are not used in any BVPS UFSAR accident analysis for radioactive releases from a
system or component.
These three process flow rato monitors are not used to assess plant conditions during and following an accident.
D.
SAFETY ANALYSIS The proposed removal of the three process flow rato monitors from Tables 3.3-13 and 4.3-13 of the DVPS Unit No.
2 technical specifications does not significantly affect safe operation of Unit No.
2.
These throo monitors are not considered in any accident analysis assumptions.
The ventilation system associated with each monitor is non-safety related and is not required to perform any safety related function.
Additionally, these monitors are not used to asseau plant conditions during or following an accident.
A postulated monitor failure will not result in increased offsito doses because design maximum system flow rates are used for ODCM doso calculation 7.
Additionally, it has been determined that the associated effluent pathways are not capable of producing a source term in exccan of the 10 CFR 20 and 10 CFR 50 Appendix I
limits.
Thereforo, this change is considered safe since no credit is taken for those monitors in mitigating the consequences of an accident.
- Also, monitor failure will not result in an increased offsite dose or adversely affect our ability to conservatively estimate offsito doses.
And
- finally, the associated offluent pathways are not capable of producing a source term in excess of prescribed limits.
E.
NO SIGNIFICANT HAZARDS EVALUATION The no significant hazard considerations involved with the proposed amendment have been evaluated, focusing on the three standards set forth in 10 CFR 50.92(c) as quoted below!
The Commission may make a final determination, pursuant to the procedures in paragraph 50.91, that a proposed amendment to an operating license for a
facility licensed under paragraph 50.21(b) or paragraph 50.22 or for a testing facility involves no significant hazards consideration, if operation of the facility in accordance with the proposed amendment would not:
(1)
Involve a
significant it. crease in the probability or consequences of an accident previously evaluated; or (2)
Create the possibility of a new or different kind of accident from any accident previously evaluated; or (3)
Involve a significant reduction in a margin of safety.
i
' ATTACHMENT B, continued proposed Technical Specification Chango No. 61 Page 3 The following evaluation is provided for the no significant hazards consideration standards.
1.
Does the change involve a
significant increase in the probability or consequences of an accident previously evaluated?
This proposed chango cannot increase tbo probability of an accident previously evaluated since the process flow rate monitors are not considered in any accident analysis.
The ventilation system associated with each process flow rato
'i i
monitor is non-safety related and not required to perform any safety related function.
The radiological consequences are not offected during a-accident since those monitors are not used to assess plant conditions during or following an accident.
l Thorofore this proposed chango doos not involvo a
significant increase in the probability or consequences of an accident previously evaluated.
2.
Does.the chango create the possibility of a now or different kind of accident from any accident previously evaluatod?
The failure of those process flow rato monitors will not
[
modify plant response and therefore will not create a now type of accident.
Failure of those monitors would be recognized by the operators by failure alarms and/or monitor diagnostics.
A monitor failure will not result in increased offsito doso because design maximum system flow rates are used for ODCM doso calculations.
The failure of those monitors will not result in a
malfunction of any other equipment.
As.such, radiological consequences would not be offected by monitor failure.
i Thorofore, this proposed chango does not create the possibility of an now or different kind of accident from any accident previously oveluated.
3.
Does the change. involve a significant reduction in a margin of safety?
The margin of safety is not reduced because design maximum
. system flow rates are used in ODCM dose' calculations.
Thoso l
flow rates 'are used in lieu of the flow ratos observed from the process flow rato monitors during normal plant operation.
There would be co change to the offsito dosos as a
result of this proposed change and offsito dosos would still be less than 10 CFR 20 and 10 CFR 50 Appendix I limits.
The' associated offluent pathways are not capable of producing a
source term in excess of the 10 CFR 20 and 10 CFR 50 Appendix I limits.
Thoroforo, this proposed change does not involve a
significant reduction in a margin of safety.
- ATTACl! MENT D, continued Proposed Technical Specification Chango No. 61 Page 4 F.
NO SIGNIFICANT llAZARDS CONSIDERATICN DETERMINATION t
Based on the considerations expressed above, it is concluded that the activitics associated with this licenso amendment request
'i satisfies the no significant hazards consideration standards of 10 CFR 50.92(c)
- and, accordingly, a
no significant hazards consideration finding is justifiod.
't u
f f
i -
l 1
_.. _ _ _ -.. _.... _ _ _. _. _ _. _ _ _ _ _.. _ _ _ _ -.. _.. ~
ATTACHMENT C Beaver Valley Power Station, Unit No. 2 Proposed Technical 3pecification Change No. 61 I
Typed Pages:
l 3/4 3-67 l-3/4 3-68 l
3/4 3 71 3/4 3-72 l
l l
r I
l.
l
TABLE 3.3-13 (Continued)
MINIMUM M
CHANNELS INSTRUMENT OP_ERABLE APPLICABILITY PARAMETER ACTION
<>c 3.
Elevated Release E
(2HVS-RQ109A-& B) t
- a. Noble Gas Activity Monitor 1
Radioactivity Rate.
29, 30 ***
c Measurement
=
b.
Particulate Activity Monitor 1
32 u
c.
Process Flow Rate Monitor 1
Process Flow Rate 28 Measurement 53 d.
Sampler Flow Rate Monitor 1
Sampler Flow. Rate 28 y
Device Measurement t
@ 2d 4.
Decontamination Building Vent
{^
(2RMQ-RQ301A & B) w yi
- a. Noble Gas A.:tivity Monitor 1
Radioactivity Rate 29 g4 Measurement r
b.
Particulate Activity Monitor 1
32 c.
Sampler Flcw B'te Monitor 1
Sampler Flt.:/ Rate 28 g
Measuremer Ocaam K
- During release via this pathway.
,,,During purging of reactor containment via this pathway.
.o
TABLE 3.3-13 (Continued)
MINIMUM to CHANNELS INSTRUMENT
' OPERABLE APPLICABILITY PARAMETER ACTION
<>e 5.
Condensate Polishing Building Vent (2HVL-RQ112A & B) s
- a. Noble Gas Activity Monitor 1
Radioactivity Rate 29 e
Measurement zy b.
Particulate Activity Monitor 1
32-m
- c. Sampler Flow Rate Monitor 1
Sampler Flow Rate 28 l
Measurement g
- 6. Waste Gas Storage Vault y
(2RMQ-RQ303A & B) t
@R
- a. Noble Gas Activity Monitor 1
Radioactivity Rate 29 oa Measurement a
y b.
Particulate Activity Monitor 1
32 mm l.
O'.
c.
Sampler Flow Rate Monitor 1
Sampler Flow Rate 28 jj Measurement
- 7. Gaseous Waste System E
Surge Tank Discharge
?
a
- a. Oxygen Monitor 2
Oxygen 31 (2GWS-OA100A & B) m W
=
0
- During release via this pathway.
,,During waste gas decay tank filling operation.
i
TABLE 4.3-13 (Continued)
CHANNEL CHANNEL SOURCE CHANNEL FUNCTIONAL 4
CHECK CHECK CALIBRATION TEST INSTRUMENT g
- 3. Elevated Release (2HVS-RQ109A L B)
M
- a. Noble Gas Activity Monitor.
D M(5),
R(3) (6)
Q(2)
P (5) ***
i b.
Particulate Activity Monitor W
N/A N/A N/A e
be
- c. Process Flow Rate Monitor D
N/A R
Q
- d. Sampler Flow Rate Monitor D
N/A R
Q w
4.
Decontamination Building Vent Q
(2RMQ-RQ301A & B) n a.
Noble Gas Activity Monitor D
M(5)
R(3) (6)
Q(2) 0 OU g^
b.
Particulate Activity' Monitor W
N/A N/A N/A Sampler Flow Rate Monitor D
N/A R
Q l
u
@4 c.
O'-
5.
Condensate Polishing Building Vent j
(2HVL-RQ112A & B)
- a. Noble Gas Activity Monitor D
M(5)
R(3 ) (6)
Q(2) l N
l
- b. Particulate Activity Monitor W
N/A N/A N/A a
Sampler Flow Rate Monitor D
N/A R
Q c.
S z
?
m e
TABLE 4'.3-13-(Continued 1' CHANNEL to'y CHANNEL SOURCE CHANNEL FUNCTIONAL CHECK
' CHECK CALIBRATIQ)1 TEST INSTRUMENT N
- 6. Waste Gas Storage Vault
[
(2RMQ-RQ303A & B)
- a. Noble Gas Activity' Monitor D
M(5)-
R(3) (6)
Q(2)'
t1 b.
Particulate Activity Monitor W
N/A N/A N/A I
D F/A R
Q Sampler Flow Rate Monitor 8
c.
u
- 7. Gaseous Waste System Surge Tank Discharge D
N/A Q(4)
M
- a. Oxygen Monitor (2GWS-OA100A & B) o
.t Ob u
o 2."
X$
li ea on 2:
P
.