ML20012G590
| ML20012G590 | |
| Person / Time | |
|---|---|
| Site: | Peach Bottom  |
| Issue date: | 02/25/1993 |
| From: | PECO ENERGY CO., (FORMERLY PHILADELPHIA ELECTRIC |
| To: | |
| Shared Package | |
| ML20012G589 | List: |
| References | |
| NUDOCS 9303090393 | |
| Download: ML20012G590 (6) | |
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11 I
l ATTACHMENT 2 i
i PEACH BOTTOM ATOMIC POWER STATION UNITS 2 AND 3 i
t i
Docket Nos. 50-277 50-278 License Nos. DPR-44 i
DPR-56 TECHNICAL SPECIFICATION CHANGE REQUEST f
No. 92-13 i
List of Attached Pages Unit 2 Unit 3 77a 172 172 l
173 I
194 t
i 2
9303090393 930225 k
ADOCK05000g7 PDR P
BBLE 3.2.F (Cont'd) - SURVEILLANCE INSTRUMENTATION l
j Minimum No.
of Operable Type Indication Instrument Action
- Item Channels Parameter Instrument and Range 11 2-Suppression Chamber LR-8(9)123A,B Recorder 1-21 ft.
(10) (11)
Water Level (wide range) 12 1
Control Rod Position N/A 28 Volt Indicating )
(1) (2) (3) (4)
Lights
)
13 1
Neutron Monitoring N/A SRM, IRM, LPRM,
)
0-100%
)
14 1
Safety-Relief Valve P0AM-2(3)-2-71A-L Acoustic or (5)
Position Indication TE-2(3)-2-113A-L Thermocouple m
i 15 2
Drywell High RR-8(9)103A,B Recorder
.s O
Range Radiation 1-1E(+8) R/hr (7) s.
7 Monitors 16 1
Main Stack High Range RR-7127 (Green Pen)
Recorder 1.4e(-2) to 1.4E(+4)uC1/cc (7) 17 1
Reactor Building Roof RR-7127 (Red Pen U/2)
Recorder Vent High Range Radiation RR-7127 (Blue Pen U/3) 1.4E(-2) to 1.4E(+4)uC1/cc (7)
Monitor 18 2
Drywell Hydrogen 3AC872, 3BC872 Analyzer and Recorder (1) (2) (3).
Concentration Analyzer XR-90411A, XR-904110 0-30% volume 4
and Monitor o Notes for Table 3.2.F appear on pages 78 and 78a.
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Unit 2
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PBAPS LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS 3.7.A Primary Containment A
- 6. - Containment Atmosphere Dilution u.
Containment Atmosphere Dilution
- a. Whenever either reactor is in power operation, the Post-LOCA
- a. The post-LOCA containment Containment Atmosphere Dilution atmosphere dilution System must be operable and system shall be capable of supplying nitrogen functionally tested once to either Unit 2 or Unit 3 per operating cycle, containment for atmosphere dilution if required by post-LOCA conditions.
If this j
specification cannot be met, the system must be restored to an operable condition within 30
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days or bcth reactors must be taken out of power operation, j
- b. Whenever either reactor is in
}
power operation, the post-LOCA Containment Atmosphere Dilution System shall contain a minimum
- b. The le<el in the liquid j
of 2500 gallons of liquid nitrogen storage tank nitrogen.
If this shall be verified in specification cannot be met, accordance with the minimum volume will be Specification 4.7.E.3.a.
restored within 30 days or both reactors must be taken out of power operation.
- c. Whenever the reactor is in power operation, there shall be at-least one CAD system. oxygen analyzer serving tl:e drywell and one CAD system oxygan analyzer serving the suppression chamber.on that reactor.
If this specification cannot be met, i
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Unit 3 PBAPS j
LIMITING CONDITIONS FOR OPERATION SURVEILLANCE REQUIREMENTS
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3.7.A
. Primary Containment 4.7.A Primary Containment l
6.
Containment Atmosphere Dilution i
6.
Containment Atmosphere
[
- a. Whenever either reactor is in Dilution l
power operation, the Post-LOCA j
Containment Atmosphere Dilution
- a. The post-LOCA containment System must be operable and atmosphere dilution i
capable of supplying nitrogen system shall be l
to either Unit 2 or Unit 3 functionally tested.once containment for. atmosphere per operating cycle.
j dilution if required by post-LOCA conditions.
If this j
specification cannot be met,
- b. The level in the liquid the system must be restored to nitrogen storage tank an operable condition within 30 shall be verified in days or both reactors must be accordance with i
taken out of power operation.
Specification 4.7.E.3.a.
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- b. Whenever either reactor is in power operation, the post-LOCA Containment Atmosphere Dilution System shall contain a minimum of 2500 gallons of liquid j
If this specification cannot be met, the minimum volume will be restored within 30 days or both reactors must be taken out of q
power operation.
- c. Whenever the reactor is in power operation, there shall be i'
2 analyzers operable to monitor oxygen concentration in the containment atmosphere. There j
shall be 2 channels operable to monitor drywell oxygen concentration and 2 channels operable to monitor torus oxygen concentration.
With only 1 channel operable to monitor drywell oxygen concentration or with only 1 l
channel operable to monitor l
torus oxygen concentration, restore the inoperable J
channel (s) to operable status
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within 7 days or be in at least Hot Shutdown within the next 12 hou rs..
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Unit 3.
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LIMITING CONDITION FOR OPERATION SURVEILLANCE REQUIREMENTS 3.7.A.6.c (Cont'd) 4.7.A.6 (Cont'd)
I With no channels c.
The analyzers shall be operable to monitor tested for channel check =
drywell oxygen once per month and shall concentration or no have channel calibration channels operable to once per 3 months..The monitor torus oxygen atmospheric analyzing'
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concentration, restore system shall be the inoperable functionally tested once channel (s) to operable per operating cycle in status within 48 hours5.555556e-4 days <br />0.0133 hours <br />7.936508e-5 weeks <br />1.8264e-5 months <br /> conjunction with the or be in at least Hot specification 4.7.A.6.a.
Shutdown within the next 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br />.
d.
Technical Specification requirements for hydrogen are detailed separately in Table 3.2.F/4.2.F.
l e.
A 30 psig limit is the maximum containment repressurization allowable using the CAD system. Venting via the SBGT sys%m to this stack must be initiated at 30 psig following the initial peak pressure at 49.1 psig.
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Unit 3 1
PBAPS r
r 3.7.A & 4.7.A BASES (Cont'd) periodic testing of the system is required. Twice weekly operation of the containment oxygen analyzer that is associated with the containment inerting makeup system is sufficient to insure its readiness. Reliance on that oxygen analyzer for this purpose of post-LOCA oxygen measurement will terminate when the CAD system is operable.
i The Post-LOCA Containment Atmosphere Dilution system design basis and description are presented in Question 14.6 of the FSAR. In summary, the limiting criteria, based on the assumptions of Safety Guide 7, are:
1.
Maintain oxygen concentration in the containment during post-LOCA conditions to less than 5% Volume.
2.
Limit the buildup in the containment pressure due to j
nitrogen addition to less than 30 psig.
3.
To limit the offsite dose due to containment venting (for i
pressure control) to less than 30 Rem to the thyroid.
By maintaining at least a 7-day supply of nitrogen on site, there will be sufficient time after the occurrence of a LOCA for obtaining additional nitrogen supply from local commercial sources which have been discussed in Question 14.6 of the FSAR. The system design contains sufficient redundancy to ensure its reliability. Thus, it is sufficient to test the operability of the whole system once per operating cycle._
Two analyzers are provided to monitor the containment for hydrogen and oxygen during nonnal operation and post-LOCA operation. Each analyzer contains a channel to monitor the drywell and a channel to monitor the torus during post-LOCA operation. Each analyzer is also provided with tvo sample pumps. Only one pump is required for analyzer operation.
l The LCOs and surveillance requirements for operation in the CAD system are in accordance with Standard Technical Specifications (NUREG-0123, i'
Revision 3). The Technical Specification requirements for hydrogen are detailed separately in Tables 3.2.F/4.2.F.
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