ML20082H508
| ML20082H508 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 08/15/1991 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20082H507 | List: |
| References | |
| NUDOCS 9108260145 | |
| Download: ML20082H508 (2) | |
Text
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QUAD CITIES UlllTS 3 &2 i
DPR-29 & DPR-30 1.1/2.1 FUEL CLADDI!1G INTEGRITY I
SAFETY LIMITS LIMITING SAFETY SYSTEM SETTIliG A. Thormal Power, liigh Pressure and A. Houtron Flux Trip Sottings j
!!igh Flow
[
The LIMITING BAFETY SYSTEM f
The MINIMUM CRITICAL POWER RATIO SETTINGS for noutron flux ehall i
(MCPR) shall not be loss than 1.06 be an specified below with the REACTOR VESSEL PRESSURE greater than or equal to 800 psia
- 1. The APRM liigh Plux (flow arid core flow grantor than or equal binsod) trip notting shall be to 10% of rated flow.
as shown.in Figuro 2.1-1 and r
shall bo' h}2.LLCADILITY t f
S 5 (.58Wo + 62)
OPERATIONAL MODES 1 and 2.
[
with a maximum sotpoint of 120%
AgILQ]i:
for core flow equal to 98 x i
6 10. lb/hr and greator.
With-MCPR loss than 1.06 and the REACTOR VESSEL PRESSURE greater Whores i
than or equal to 800 psia and coro flow greator than or equal to 10%
S =. sotting in porcent of rated of rated flow, be in at least 110T power i
SHUTDOWN WITHIN 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and comply i
with the requirements of Specifi-We = percent of drive flow i
cation 6.4.
required to produce a rated core flow of 98 million Ib/hr.
In the ovent of operation with t
a MAXIMUM FRACTION OF LIMITING
{
POWER DENSITY (MFLPD) greater-i than the FRACTION OF RATED POWER (FRP), the setting shall i
be modified as follows:
i fHE S $ (.58Wo + 62) ( MFLPD ]
i r
Where:
[
FRP = FRACTION OF RATED POWER (2 511 MW,)
l 1
MFLPD = MAXIMUM FRACTION OF
[
LIMITING POWER DENSITY 1.1/2.1-1 3
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,9108260145 910815 PDR ADOCK 05000'54
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I QUAD CITIFS Uti1TS 1 & 2 DPR-29 & DPR-30 B. Thermal Power, Low Pressure or Low B. APRM Rod Block Setting Flow The LIMITING SAFETY SYSTEM SETTING Thermal power shall not exceed 25%
for the APRM Rod Block shall be of RATED TilERMAL POWER with the as shown in Figure 2.1-1 and REACTOR VESSEL PRESSURE less than shall be 800 paia or core flow less than S $ (.58Wo + 50) 10% of rated flow.
The definitions used above for the APPLICADILITl APRM scram trip apply.
In the event of operation with a MAXIMUM FRACTION OF LIMITING POWER DEllSITY OPERATIONAL MODES 1 and 2.
(MPLPD) greater than the FFACTION OF RATED POWER (FRP), the setting ACTION:
shall be modified as follows:
With thermal poWor exceeding 25% of RATED Ti!ERMAL POWER and the REACTOR EIT VESSEL PRESSURE less than 800 psia S 5 (. 58W, 4 50) ( MPLPD )
or core flow less than 10% of rated flow, be in at least ilOT SilUTDOWN within 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> and comply with M.o The definitions used above for requirementn of Specificucion 6.4.
The ratio of FRP to MPLPD shall be set equal to 1.0 unless the actual operating value is less than 1.0, in which case the actual operating value will be used.
This may also be performed by increasing the APRM gain by the inverse ratio, MFLPD/FRP, which accomplishes the same degree of protection as reducing the trip setting by FRP/MPLPD.
APPLICADlJelTl As shown in Table 3.2-3.
i I
ACTlQll:
With the APRM Rod Block setting i
less conservative than the value shown above, declare the CilANNEL inoperable and apply the l
applicable ACTION statement requirement of Specification 1.1/2.1-3 i
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