ML19326C702
| ML19326C702 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 05/10/1978 |
| From: | Office of Nuclear Reactor Regulation |
| To: | |
| Shared Package | |
| ML19326C700 | List: |
| References | |
| NUDOCS 8004250513 | |
| Download: ML19326C702 (1) | |
Text
--
O v
.l
/
SAMPLE SURVEILLANCE TECHNICAL SPECIFICATIONS FOR
/
PWR HPSI AND LPSI SYSTEM THROTTLE VALVE STOPS l'
The corre'ct position of each electrical and/or mechanical position stop for the following throttle valves shall be verified:
a.
Within 4 hours4.62963e-5 days <br />0.00111 hours <br />6.613757e-6 weeks <br />1.522e-6 months <br /> following completion of each valve stroking operation or maintenance on the valve when the H?SI or LPSI System is required to be operable.
I
'b. At least once per 18 months.
1 HPSI System LPSI System Valve Number Valve Number 1.
1.
1 2.
2.
3.
3.
4.
4.
5.
5.
2.
A flow balance test shall be performed during shutdown to confirm the following minimum injection flow rates following completion of HPSI or LPSI system modifications that alter system flow characteristics:
'HPSI System - Single Puma LPSI System - Single Pumo Injection Leg 1
gpm '
Injection Leg 1
gpm Injection Leg gpm Injection Leg 1
gpn 4
Injection Leg gpm Injection Leg gpm Injection Leg 1
gpm Injection Leg gpm
~
Bases The purpose of these surveillance requirements is to provide assurance that proper ECCS flows will be maintained in the event of a LOCA.
Maintenance of proper flow resistance and pressure drop in the piping system to each injection point is necessary to:
(1) prevent total pump flew from exceecing runout conditions when the system is in its minimum resistance configuration,
, ~
(2) provide the proper flow split between 'njection points in accorcance w th the assumpt ons used in the ECCS-LOCA analyses, and (3) provide an i
i acceptable level of total ECCS flow to all injection points equal to or above that assumed in the ECCS-LOCA analyses.
G 8004250 b 3 u