ML20234B793
| ML20234B793 | |
| Person / Time | |
|---|---|
| Site: | Grand Gulf  |
| Issue date: | 09/14/1987 |
| From: | SYSTEM ENERGY RESOURCES, INC. |
| To: | |
| Shared Package | |
| ML20234B239 | List: |
| References | |
| NUDOCS 8709210080 | |
| Download: ML20234B793 (1) | |
Text
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REACTIVITY CONTROL SYSTEMS SURVEILLANCE REQUIREMENTS (Continued)
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b.
At least once per 31 days by; l
1.
Starting both pumps and recirculating demineralized water to the test tank.
2.
Verifying the continuity of the explosive charge.
4 s
3.
Determining that the available weight of sodium pentaborate is I3[*
greater than or equal to -MOO-lbs and the concentration of boron
[
in solution is within the" limits of Figure 3.1.5-1 by chemical analysis.*
45go0 tou 4.
Verifying that each valve, manual, power operated or automatic, in the flow path that is not locked, sealed, or otherwise securea in position, is in its correct position.
c.
Demonstrating that, when tested pursuant to Specification 4.0.5, the minimum flow requirement of 41.2 gpm at a pressure of greater than or equal to psig is metJL;tiovr ne % 7ian of 64 l
Sub,uM Auseer I3 ol9f *?
I300 pw-f rel.'s.f valvL.
d.
At least once per 18 months during shutdown by; 1.
Initiating one of the standby liquid control system subsystems, including an explosive valve, and verifying that a flow path from the pumps to the reactor pressure vessel is available by pumping demineralized water into the reactor vessel.
The replacement charge for the explosive valve shall be from the same manufactured batch as the one fired or from another batch which has been certified by having one of that batch successfully fired.
Both system subsystems shall be tested in 36 months.
c P*ns Wehk 3% o+ +he-nordnal v'alve.
o 2.
Demonstrating that the pump relief valve %tpcint i5 le55 Seh poin+ d l'foops'g does not actuate during recirculation to the test tank.thar or equal to 3.
- Demonstrating that all heat traced piping between the storage tank and the reactor vessel is unblocked by pumping from the storage tank to the test tank and then draining and flushing the piping with demineralized water.
4.
Demonstrating that the storage tank heater is OPERABLE by verifying the expected temperature rise for the sodium pentaborate solution in the storage tank after the heater is energized.
^ihis test shall also be performed anytime water or boron is added to the solution or when the solution temperature drops below the limit of Figure 3.1.5-1.
- 'This test shall also be performed whenever both heat tracing circuits have been found to be inoperable and may be performed by any series of sequential, overlapping or total flow path steps such that the entire flow path is included.
GRAND GULF-UNIT 1 3/4 1-19 Arnendmeni do._
8709210080 870914 PDR ADOCK 05000416 P