ML20205C734
| ML20205C734 | |
| Person / Time | |
|---|---|
| Site: | Cooper  |
| Issue date: | 03/20/1987 |
| From: | NRC OFFICE OF INSPECTION & ENFORCEMENT (IE REGION IV) |
| To: | |
| Shared Package | |
| ML20205C708 | List: |
| References | |
| 50-298-OL-87-01, 50-298-OL-87-1, NUDOCS 8703300248 | |
| Download: ML20205C734 (1) | |
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2t__EL6dI_QESlQU_lGQLUQ1NQ_18EEII_680_EUEBGEUQ1_SYSIEMS PAGF 24 ANSWERS COOPER
-87/02/17-GRAVES, D.
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2.01 (2.00)
Tha two BU scram valves (0.4) are upstream of the individual HOU's individual scram solenoids (0.4).
They are normally deenergized (0.4).
The power supply is forathe valves is 125 vde (0.4).
On a scram,
,the two valves energiza'to vent the scram air header to atmosphere (0.4).
~0Cokup scram valve location description may vary and still be acceptable.
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REFERENCE a Ccntrol Rod Drive Hydraulics, pg CRDH-19, 32 K/A 201001 Kl.09,- K2.03 i
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ANSWER 2.02 (2.00)
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The turbine will speed up and trip on overspeed (0.5) because the governor valve will fail open (0.5).
The turbine may also trip on low oil pressure (acceptable for full credit).
i b.
The turbine will not start (0.5) because the governor and stop valves pequire oil pressure to open (0.5) which is normally supplied by the auxiliary oil pump.
REFERENCE
% RCIC, pg RCIC'13 HPol, pg HPCI-31 f' N/d 717000 A2.07
,t>A 406000 K4.14, K5.05
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1 N4SWER
- 2. hJ 12.00) 1 ht.
The supph hston pool suction valves (M0-13A, 0,
C,
- 0) cannot be opened urUe7s the companion shutdown cooling suction valve (M0-15A, B,
C, D) is snLt (0.75) and vice versa (0.25).
b.
If MO-17 OR 18 (Shutdown Cooling Isolation Valves) OR the associated M0-15 (Shutdown Cooling Suction Valve) AND the associated M0-13 (Suppression Pool Suction Valves) is shut, the pump will trip (1.0).
s y.. REFERENCE T RHR, pg RHR-6, 7 K/A 205000 K4.04, KS.02 I
B70330024887034,98 hDR ADOCK 05000.