ML19354E529
| ML19354E529 | |
| Person / Time | |
|---|---|
| Site: | Fort Calhoun  |
| Issue date: | 01/24/1990 |
| From: | OMAHA PUBLIC POWER DISTRICT |
| To: | |
| Shared Package | |
| ML19354E526 | List: |
| References | |
| NUDOCS 9001310328 | |
| Download: ML19354E529 (1) | |
Text
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F4' ?P 22.0 LIMITING CONDITIONS FOR OPERATION j
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i dt$JR 2s2 e Chemical and Volume Control System j
y Aeolicability Applies to the operational status of the chemical and volume control
- system, i
Obiective To define those conditions of the chemical and volume control system necessary to assure safe reactor operation.
Soecifications gygpcAL-(1)
When fuel is in the reactor there shall be at least one flow path to the core for boric acid njection.
This flow path may be from the SIRWT, with at least 10,000 gals available at refueling boron concentration or from a BAST which meets the requirements of Figure 211 for a SIRWT boron concentration at the technical specification limit.
(2)
The reactor shall not be made critical unless all the following minimum requirements are met:
a.
At least two charging pumps shall be operable.
b.
One boric acid transfer pump shall be operable.
c.
The minimum volume of borated water contained in the concentrated boric acid tank (s) is dependent on the boric acid storage tank (BAST) and SIRW tank boron concentrations.
The minimum required volume curve is shown in Figure 2 11.
Depending on the flow paths available, this volume of borated water can be either the combined volume of the two BASTS or the minimum in each BAST, or can be contained in a specific BAST.
The BAST is defined as the tank, gravity feed valve, pump and associated piping.
The ambient temperature of the boric acid tank solution CH-11A and CH-llB shall meet the temperature requirements of Figure 2-12.
d.
System piping and valves shall be operable such that one of the following four conditions will be satisfied.
If piping or l
valves become inoperable and a condition change is required, six (6) hours are allowed when changing from one condition listed below to another condition listed below, dl.
The required BAST volume of Figure 2-11 can be combined between CH-11A and CH-llB when both tanks are operable, d2.
When I.CV-218 3 is inoperable or the SIRWT volume is below l
Technical Specification minimum, then each BAST must be operable and contain the required volume of Figure 211 corresponding to the requirements of the SIRWT Technical Specification boron concentration.
2-17
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