ML20083P305
| ML20083P305 | |
| Person / Time | |
|---|---|
| Site: | Arkansas Nuclear  |
| Issue date: | 05/15/1995 |
| From: | ENTERGY OPERATIONS, INC. |
| To: | |
| Shared Package | |
| ML20083P294 | List: |
| References | |
| NUDOCS 9505240156 | |
| Download: ML20083P305 (5) | |
Text
I 4.5.2 Re etir Building Cr* ling Syntems Applicability 1
Applies to testing of the reactor building emergency cooling systems.
objective
[
To verify that the reactor building emergency cooling systems are operable.
Specification L.
4.5.2.1 System Tests 4.5.2.1.1 Reactor Building Spray System (a) Once every 18 months, a system test shall be conducted to demonstrate proper operation of the system. A test signal will be applied to demonstrate actuation of the reactor building spray system (except for reactor building inlet valves to prevent water entering nozzles).
(b) Station compressed air or smoke will be introduced into the spray headers to verify the availability of the headers and j
spray nozzles at least every five years.
(c) The test will be considered satisfactory if visual observation and control board indication verifies that all components have responded to the actuation signal properly.
4.5.2.1.2 Reactor Building Cooling System 5
(a) At least once per 14 days, each reactor building emergency cooling train shall be tested to demonstrate proper operation of the system. The test shall be performed in accordance with the procedure summarized belows (1) Verifying a service water flow rate to each train of the reactor building emergency cooling sufficient to remove the post-accident heat load in the reactor building.
(2) Addition of a biocide to the service water during the
~
surveillance in 4.5.2.1.2.a.1 above, whenever service water temperature is between 60F and 80F.
(b) At least once per 31 days, each reactor building emergency cooling train shall be tested to demonctrate proper operation of the system. The test shall be performed in accordance with the procedure summarized belows (1)
Starting (unless already operating) each operational cooling fan from the control room.
9505240156 950515 PDR ADOCK 05000313 p
PDR Amendment No, M,63,H3,446 95
I Tha varificaticn of carvica wat r flow reta to occh trein cf r cctor building emergency cooling is performed to ensure that sufficient post-accident reactor building heat load can be removed by the coolers. The minimum flow rate necessary to ensure adequate post-accident heat removal capability is affected by the current conditions in the reactor building coolers and in the service water
- system, e.g. service water system supply and discharge pressure, fouling on either the service water side or the airflow side of the cooling coils, anticipated service water temperature, and the number of cooling coils and fans that are in service. The engineering evaluation which is performed to establish the minimem service water flow rate accounts for the current system conditions.
Addition of a biocide to service water is performed during reactor building emergency cooler surveillance to prevent buildup of Asian clams in the coolers when service water is pumped through the cooling coils.
This is performed when service water temperature is between 60F and 80F since in this water temperature range Asian clams can spawn and produce larva which could pass through service water system strainers.
The delivery capability of one reactor building spray pump at a time can be tested by opening the valve in the line from the borated water storage tank, opening the corresponding valve in the test line, and starting the corresponding pump.
Pump discharge pressure and flow indication demonstrate performance.
With the pumps shut down and the borated water storage tank outlet closed, the reactor building spray injection valves can each be opened and closed by operator action. With the reactor building spray inlet valves closed, low pressure air or smoke can be blown through the test connections of the reactor building spray nozzles to demonstrate that the flow paths are open.
The equipment, piping, valves, and instrumentation of the reactor building emergency cooling system are arranged so that they can be. visually inspected. The cooling fans and coils and associated piping are located outside the secondary concrete shield.
Personnel can enter the reactor building during power operations to inspect and maintain this equipment.
The service water piping and valves outside the reactor building are inspectable at all times. Operational tests and inspections will be performed prior to initial startup.
Two service water pumps are normally operating. At least once per month operation of one pump is shifted to the third pump, so testing will be unnecessary.
As the reactor building fans are normally operating, starting for testing is unnecessary for those verified to be operating.
Reference FSAR, Section 6 Amendment No. G6,62,M 3,M 6 97
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e 4
9 MARKUP OF CURRENT ANO-1 TECHNICAL SPECIFICATIONS (FOR INFO. ONLY) 1 m,-.
4.5.2 Re eter Building Ceeling Sy,tems Applicability Applies to testing of the reactor building emergency cooling systems.
Objective To verify that the reactor building emergency cooling systens are operable.
Specification 4.5.2.1 System Tests 4.5.2.1.1 Reactor Building Spray System (a) once every 18 months, a system test shall be conducted to demonstrate proper operation of the system. A test signal will be applied to demonstrate actuation of the reactor building spray system (except for reactor building inlet valves to prevent water entering nozzles).
(b) Station compressed air or smoke will be introduced into the spray headers to verify the availability of the headers and spray nozzles at least every five years.
(c) The test will be considered satisfactory if visual observation and control board indication verifies that all components have responded to the actuation signal properly.
4.5.2.1.2 Reactor Building cooling System (a) At least once per 14 days, each reactor building emergency cooling train shall be tested to demonstrate proper operation of the system. The test shall be performed in accordance with the procedure summarized belows (1) verifying a service water flow rate of 2 1200 gp to each train of the reactor building emergency cooling sufficient to remove the post-accident heat load in the reactor buildina.
(2) Addition of a blocide to the service water during the surveillance in 4.5.2.1.2.s.1 above, whenever service water temperature is between 60F and 80F.
(b) At least once per 31 days, each reactor building emergency cooling train shall be tested to demonstrate proper operation of the system. The test shall be performed in accordance with the procedure summarized below:
(1)
Starting (unless already operating) each operational cooling fan from the control room.
AmenQnent No. G6,6G,MG,+46 95
The verification of service water flow rate to each train of reactor buildino gmergency coolina is performed to ensure that sufficient post-accident reactor buildina heat load can be removed by the coolers.
The minimum flow rate necessary to ensure adecuate post-accident heat removal capability is affected by the current conditions in the reactor buildina coolers and in the service water
- system, e.a.
service water system supply and discharce pressure, foulina on either the service water side or the airflow side of the coolina coils, anticipated service water temperature, and the number of cooline coils and fans l
that are in service. The enoineerino evaluation which is performed to establish the minimum service water flow rate accounts for the current system conditions, i
Addition of a biocide to service water is performed during reactor i
building emergency cooler surveillance to prevent buildup of Asian clams in the coolers when service water is pumped through the cooling coils.
This is performed when service water temperature is between 60F and 80F since in this water temperature range Asian clams can spawn and produce 1
larva which could pass through service water system strainers.
The delivery capability of one reactor building spray pump at a time can be tested by opening the valve in the line from the borated water storage tank, opening the corresponding valve in the test line, and starting the corresponding pump.
Pump discharge pressure and flow indication demonstrate performance.
1 With the pumps shut down and the borated water storage tank outlet closed, i
the reactor building spray injection valves can each be opened and closed by operator action. With the reactor building spray inlet valves closed, low pressure air or smoke can be blown through the test connections of the reactor building spray nozzles to demonstrate that the flow paths are open.
j The equipment, piping, valves, and instrumentation of the reactor building emergency cooling system are arranged so that they can be visually
)
inspected. The cooling fans and coils and associated piping are located outside the secondary concrete shield.
Personnel can enter the reactor building during power operations to inspect and naintain this equipment.
The service water piping and valves outside the reactor building are inspectable at all times. Operational tests and inspections will be performed prior to initial startup.
Two service water pumps are normally operating. At least once per month operation of one pump is shifted to the third pump, so testing will be unnecessary.
As the reactor building fans are normally operating, starting for testing is unnecessary for those verified to be operating.
Reference FSAR, Section 6 Amendment No. G6,62,44G,446 97