ML20070B644
| ML20070B644 | |
| Person / Time | |
|---|---|
| Site: | Quad Cities  |
| Issue date: | 01/25/1991 |
| From: | COMMONWEALTH EDISON CO. |
| To: | |
| Shared Package | |
| ML20070B630 | List: |
| References | |
| NUDOCS 9102010095 | |
| Download: ML20070B644 (3) | |
Text
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4 AUACHMENL D Page 3.5/4.5-10 (DPR-29) 3.5/4.5-7 (DPR-30) l
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QUAD-CITIES OPR-29 G.
Maintenance of Filled Discharge Pipe G.
Maintenance of Filled Discharge Pipe The following surveillance require-ments shall be adhered to to assure that the discharge piping of the core spray, LPCI mode of the RHR, HPCI, and RCIC are filled:
1.
Whenever core spray, LPCI mode 1.
of the RHR, HPCI, or RCIC are Every tronth prior to the testinii-required to be operable, the
+f-the LPCI mode of the kHPgad discharge piping from the pump core spray ECCS,f e e dischaYge HPcl discharge of these systems to piping of th:M sys+Ps shall be and vented from the high point and the last check valves shall be RG'C filled.
water flow observed, 2.
The discharge pipe pressure for 2.
Following any period where HPCI, Core Spray and LPCI mode of RHR shall be maintained at greater RCIC, LPCI mode of the RHR or than 40 psig and less than 90 core spray have been out of service and drained for psig.
If pressure in any of these systems is less than 40 maintenance, the discharge psig or greater than 90 psig, piping of the inoperable system this condition shall be alarmed shall be vented from the high in the control room and point prior to the return of the immediate corrective action system to service.
taken.
If the discharge pipe pressure is not within these limits in 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> after the occurrence, an orderly shutdown shall be initiated, and the reactor shall be in a cold shutdown condition within 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br /> after initiation.
3.
Filled discharge piping for HPCI 3.
and RCIC systems is ensured by Whenever the HPCI or RCIC system maintaining the level in the is lined up to take suction from Contaminated Condensate Storage the torus, the discharge piping TanLc (CCST's) at or above 9.5 of the HPCI and RCIC shall be feet.
If the CCST level falls vented from the high point of below 9.5 feet, restore the the system and water flow ob-level within 12 hours1.388889e-4 days <br />0.00333 hours <br />1.984127e-5 weeks <br />4.566e-6 months <br /> or line up served every 24 hours2.777778e-4 days <br />0.00667 hours <br />3.968254e-5 weeks <br />9.132e-6 months <br />.
both HPCI and RCIC to take a suction from the torus per 4.5.G.3.
3.5/4.5-10 AmendmentNo.)l4'
QUAD-CITIES o
DPR-30 is being done which has the potential for draining the reactor vessel.
1 3.
When irradiated fuel is in the reactor and the vessel head is removed, the suppression chamber may be drained completely and no more than one control rod drive housing opened at any one time provided that the spent fuel '.
N te is open and the fuel pool w ^
evel is maintained at a,evel of greater than j
33 feet above the bottom of the 4
pool. Additionally, a minimum condensate storage reserve of 230,000 gallons shall be maintained, no work shall be performed in the reactor vessel while a control rod drive housing is blanked following removal of the control rod drive, and a special flange shall be available which can be used to blank an open housing in the event of a leak.
4.
When irradiated fuel is in the reactor and the vessel head is removed, work that has the potential for draining the vessel may be carried on with less than 112,200 ft3 of water in the suppression pool, provided that: (1) the total volume of water in the suppression pool, refueling cavity, and the fuel storage pool above the bottom of the fuel pool gate is greater than 112,200 fti, (2) the fuel storage pool gate is removed; (3) the low-pressure core and containment cooling systems are operable; and (4) the automatic mode of the drywell sump pumps is disabled.
G, Maintenance of filled. Discharge Pipe G.
Maintenance of filled Discharge Pipe The following surveillance requirement * ' hall be adhered to to assure that he discharge piping of the core spray, LPCI mode of the RHR, 1.
Whenever core spray, LPCI mode of the HPCI, and RCIC are filled:
RHR, HPCI, or RCIC are required to be operable, the discharge pt;ing from 1.
Every month the LPCI mode of the the pump discharge of these systems RHR, Core Spray ECCS, HPCI, and to the last check valves shall be RCIC discharge piping shall be
- filled, vented from the high point and water flow observed.
3.5/4.5-7 3426B-
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