ML20064D362
| ML20064D362 | |
| Person / Time | |
|---|---|
| Site: | Skagit |
| Issue date: | 12/22/1982 |
| From: | PUGET SOUND POWER & LIGHT CO. |
| To: | |
| Shared Package | |
| ML20064D285 | List: |
| References | |
| NUDOCS 8301040633 | |
| Download: ML20064D362 (13) | |
Text
3 J
S/HNP-PSAR 12/22/82-A File this instruction sheet in the f ront of Volume 1 as a I
(d record of changes.
t The following-information and check list are furnisNed as a guide f or the insertion.of ' new sheets f or Amendment.'29 into the Preliminary Safety Analysis Report for the Skaqit/
Hanf ord Nuclear Project.
This material is denoted by use
_ l of the amendment date in the upper right-haird, corner of the x
- page, j
l New sheets should be inserted as l'isted below:
Discard Old Sheet Insert New Sheet (Front /Back)
(Front /Back)
. 1 x
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CHAPTER 2 1
Figure 2.4-17 Figure 7 '. 4-17 Figure 2.4-20 Figure 2.4 v e
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Table 3.2-1 Sheet, 5 ' of 29/
Table 3.Q-1 Sheet 5 of 29/
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V TABI.E 3.2-1 Sheet 5 of 29 Quality Principa l Source Group construction of Safety Classi-Codes and Seismic Q-Supply Class Location fication Standards Category List Comments Principal Components (a)
( t-)
(c)
( 1)
(a)
(f)
(g)
(h) l 4
Heat Exc ha nger s P
OTHEP A,C,T D
VIII-1/T EMA-C NA N
5.
Pumps P
OTHER A
D VIII-1/Hyd.1 NA N
(j) 6.
Pressure vessels P
OTHER A
D VIII-1 NA N
1 B.
Service Water System 1.
Piping and valves forming part of Containment boundary P
2 A, C B
III-2 I
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Piping and valves, other P
OTHER A,C,T D
B31.1 NA N
3.
Heat excha nger s P
CTHER A,C D
VIII-1/TEMA-C NA N
4 Pumps P
OTHER A
D VIII-1/Hyd.I NA N
( j) 5.
Pressure vessels P
OTHER A,T D
VIII-1 NA N
C.
Piping P
OTHER O,7 D
B31.1 NA N
2.
Condenser P
OTHEP T
D HEI NA N
3.
Pumps P
OTHER O
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( j) 4 Valves P
OTHER O,T D
B31.1 NA N
D.
Domestic Water System 1.
Tank P
OTH ER M
D AWWA D100/D101/
NA N
D102 2.
Storage heater P
OTHER BM D
II/VIII/IX NA N
3.
Hydropneumatic Tank P
OTHER M
D II/VIII/IX NA N
4 Plumbing fixtures, and specialties P
OTHER M,A,B,T,W D
UFC NA N
5.
Personal protective equipment P
OTHER T,W,A D
OSHA NA N
6.
Sanitation at temporary labor Camps P
OTH ER ALL D
WAC NA N
lS XXVII Instrument and Service Air System l~
1.
Pressure vessels, accumulators, u
supporting safety related
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3 A, T. C C
III-3 I
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Piping and valves in lines bet ween above accumulatcrs 8
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Compressors P
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III-2 I
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TAB LE 3.2-1 Sheet 6 of 29 Quality Principal Source Group Construction of Saf ety Classi-Codes and Seismic Q-Supply Class Location fication Standards Category List Commerts Frieripal Components (a)
(b)
(c)
(d)
(e)
(! )
(gs th) 6.
ADS booster compressors P
OTHER A
NONE NA N
20 7.
Pipang and Valves, other P
OTHER M
D B31.1 hA N
XXVIII Diesel Generator Systems 1.
Day tanks, standby and HPCS daesels P/GE 3
R C
III-3 I
Y 2.
Papan; and valves, ESF P
3 0,R C
III-3 I
Y 3.
Pumps, f uel oil system P
3 0,R C
III-3 I
Y 4.
Pump motors, fvel oil system P
3 0,R NA IEEE-323/344 I
Y 5.
Diesel generators P
2 R
NA TEEE-387/DEMA I
Y 6.
Electsacal modules with satety IEEE-308 functnons P
3 R
NA IEEE-279/308 I
Y 7.
Cable, wath saf ety f unctions P
3 NA IEEE-279/379/
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Diesel f uel storage tanks P
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9.
Lube oil system, piping and valves P/GE 3
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III-3 I
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- 10. Starting aar systes 3
Piping, valves and receivers P/GE 3
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III-3 I
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Compressors P/GE OTHER R
D B31.1 II N
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- 11. Diesel service water pump, valves l38 pipes and beat exchangers P
3 0,R C
III-3 I
Y
- 12. Day tank, diesel dr iven f ire pomp P
(y!1ER R
D API 650 II N
- 13. Piping and valves, non-ESF P
OTHER O,R D
B31.1 II N
29
- 14. Oil bath air cleaner P
3 R
NA DEMA I
Y XXIX Hydrogen Control System 5
1.
Hydrogen Recombaner Fystem P
2 C
B I
Y l
2.
Bydrogen Mazang System Fan P
2 C
NA AMCA I
Y Electric motor P
2 C
NA IEEE-323/344 I
Y Papang, Penetrations (Drywell/
CTMT)
P 2
C B
III-2 I
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m CT*tT )
P 2
C B
III-2 I
Y l3 Hangers & Supports P
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NA NONE I
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(1 M
3 N
o M
3 M
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to to M
9 9
9
S/HNP-PSAR 12/21/81
()T failure of SC-II portion of the system will not damage 23 that
(
any safety related systems.
9.4.6.4 Tests and Inspections The Fuel Building HVAC System will be periodically inspected to assure that all normally-operating equipment is functioning properly.
Redundant components will be periodically tested to ensure system availability.
When spent fuel is stored in the Fuel Building, periodic func-tional testing of the building isolation feature will be conducted.
Low efficiency filters will be tested in accordance with the American Society of Heating, Refrigerating and Air-Conditioning Engineers (ASHRAE) Standards 52-68, Standard Method of Testing Air Cleaning Devices Used in General Ventilation for Removing Particulate Matter.
Fans will be tested in accordance with the standards of the Air Moving and Conditioning Association, Inc. (AMCA)
Standard 210-1967, Test Methods for Air Moving Devices.
Ductwork will be tested in accordance with the Sheet Metal s
and Air-Conditioning Contractors' National Association
)
(SMACNA) for leakage during and after installation.
The
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HVAC system will be tested and balanced to provide the design air and water quantities within a tolerance of plus or minus ten percent.
Cooling coils will be tested and rated in accordance with the Air-Conditioning and Refrigeration Institute (ARI)
Standard 410-1972 for Forced-Circulation Air-Cooling and Air-Heating Coil.
9.4.6.5 Instrumentation Applications Automatic temperature and pressure controls will be pro-vided for the HVAC system to maintain the required space design temperatures and pressures.
Should an operating fan fail, the resultant loss of flow or 23 pressure would actuate an alarm and automatically start the standby fan.
Each filter will be provided with a local differential pressure indicator and a common high differential pressure alarm.
Excessive pressure drop will initiate an alarm locally and a common alarm in the control room, and the l23 9.4-63 Amendment 23
S/HNP-PSAR 12/22/82 operator will manually isolate the system and start the standby unit.
Redundant radiation monitors will be provided (in the branch exhaust duct over the fuel pool area and a single 23 set of radiation monitors will be provided downstream of exhaust fans) to monitor the exhaust air for radioactivity.
9.4.7 DIESEL GENERATOR BUILDING The Diesel Generator Room Heating and Ventilation (H&V) system will provide an environment which will not prevent operation of the diesel generator room components during normal Plant operation, or during loss of normal and preferred ac power.
Each diesel generator room will be provided with an independent H&V system.
9.4.7.1 Design Bases The outdoor and indoor atmospheric conditions which will be used to design the systems discussed in this section, are listed in Table 9.4-1.
The diesel Generator Room H&V system will be designed according to Seismic Category I requirements, and will remain functional during and after a Safe Shutdown Earth-quake (SSE).
The Diesel Generator Room H&V System will be designed and installed in accordance with the requirements of the applicable codes and standards set forth in the Design Criteria Summary Table of Chapter 3.
The Diesel Generator Room H&V System will be designed to provide an adequate environment such as not to jeopardize operation of diesel generator room components under poten-tially severe regional climatology referenced in Section 2.3.1 and the volcanic hazards referenced in Section 20 2.5.1.2.7.
Each of the three separate and independent H&V systems (except the electric unit heaters) is designed as an engi-neered safety feature system and is powered from the Class lE bus associated with the diesel generator that the H&V system serves.
O 9.4-64 Amendment 29
S/HNP-PSAR 12/22/82 f-'s 9.4.7.2
System Description
The Diesel Generator Room H&V System is shown in Figure 9.4-9.
A separate H&V system will be provided for each of the two standby diesel generator rooms and the HPCS diesel generator room.
The major components of the system for each diesel generator room will include one 100-percent air 23 washer supply unit and two 50-percent unit heaters.
A system of ductwork, dampers, air registers, and controls as indicated in Figure 9.4-9, will be provided for proper air distribution.
Each H&V system operates automatically to meet design indoor and outdoor temperature requirements listed in Table 9.4-1.
Space heating in winter, when the diesel generator is not operating, is provided by non-safety grade unit heaters to maintain a 600F environment in the diesel gener-ator room.
A safety grade air washer provides summer vent-ilating air evaporative cooling to limit the diesel gener-ator room to 1200F when the diesel generator is in opera-tion.
Each room is supplied with tornado missile protected out-side air supply louvers.
Outside air is admitted through a
[' )/
damper into a plenum where recirculated ventilation air may
(_,
be taken from the room and admitted to the plenum through the room air damper.
A plenum temperature sensing device controls both the outside air damper and the recirculated room air damper to provide the proper proportions of out-side air and recirculated room air to maintain the room environment between 600F and 1200F.
29 The mixed air flows to the air washer inlet face where an internal separating wall divides the air flow to provide two independent air supplies, one for diesel combustion air and the other for room ventilating air (see Figure 9.4-9).
The combustion air moves through the air washer without evaporative cooling and is ducted to the diesel engine after passing through an oil bath air cleaner.
The venti-lating air moves through the other section of the air I
washer where water sprays may or may not be used to provide evaporative cooling, depending upon outside air tempera-I ture.
In general, outside air temperatures less than about 72FDB will provide sufficient room cooling with the diesel generator operating so as to preclude the need for evapora-tive cooling in the air washer.
Higher outside air tempera-t ture results in higher ventilation supply air temperature and elevated room temperature.
A room thermostat will auto-matically start the air washer water spray pump and p,rovide iV 9.4-65 Amendment 29
S/HNP-PSAR 12/22/82 evaporative cooling when the room temperature exceeds the thermostat preset value.
During normal plant operation (diesel not operating) the ventilating air system is idle with only the unit heaters providing room heating during the colder months.
When any diesel start signal is received, the ventilation air supply fan is automatically started with the diesel and the outside air damper is automatically positioned to its minimum opening (30,000 CFM for the Standby Diesel Generator and 15,000 CFM for the HPCS Diesel Generator).
29 The outside air and room recirculating air dampers are automatically varied to provide adequate room ventilating air supply as diesel operation continues and the diesel generator heat rejected to the room increases.
Each of the diesel generator outside air intakes is located approximately 30 feet above grade which minimizes effects of regional dust storms.
Airborne particulate concentra-tions at that elevation are expected to be a small fraction of those experienced at grade.
Diesel engine combustion air intakes and exhausts will be separated to the extent necessary to preclude significant recirculation of diesel exhaust fumes to the combustion air intakes.
In addition, the elevated location of the outside 29 combustion air intakes will ensure that the outside trans-formers' fire extinguishing system will not adversely affect diesel engine operation as a result of intake air dilution.
To prevent fire-generated noxious gases from diluting the combustion air, the large yard adjacent to the 020.51 intakes will be paved or otherwise surfaced to minimize fire hazards.
Therefore, significant dilution of diesel engine combustion air to the point of engine performance degradaton or engine shutdown will be precluded.
9.4.7.2.1 Component Description Specific design parameters of major components of the Diesel Generator Room H&V System are listed in Table 9.4-12.
Each of the seismic Category (SC)-I air washer supply units will consist of a metal casing containing air inlet baf-fles, water spray banks with clogless spray nozzles, moisture eliminators, marine light, metal sump tank with 23 suction screens, water makeup with float valve assembly, access door, outside air and return air modulating dampers, water spray pump, bleed-off line, drain line and a supply 9
9.4-66 Amendment 29
S/HNP-PSAR 12/22/82 f-~g fan.
The suction screen consists of bronze wire cloth
(
)
backed'up by galvanized hardware screen mounted on galva-
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nized angle iron frame.
Each unit heater will consist of an electric heating coil 23 and a fan.
The unit heaters will be designed and supported to withstand the SSE.
9.4.7.2.2 System Operation Each diesel generator room will be provided with one 100 percent air washer supply unit.
The supply fan will start on the diesel start signal and the outside air and return air motor-operated dampers will operate as soon as the diesel generator has established its rated voltage and 23 frequency.
The spray pump will be controlled by a space thermostat.
The supply fan and the spray pump may also be started and stopped manually from the control room or from the local controls located outside the diesel generator room.
Operation or non-operation of the supply fan has no 29 influence on the adequacy of the diesel combustion air supply.
A portion of the room air will be returned to the inlet of
(,' 'N) required.
The room air return and the outside air inlet the supply fans to temper the incoming outside air when motorized dampers, which regulate the proportion of recircu-lated and outside air, will be controlled by a temperature controller.
Air not recirculated will be released through the missile protected air relief (backdraft) dampers, and 23 discharged through the roof at a point where it is unlikely that exhaust will be taken up in the supply intake.
l The air washer is provided with two separate sections for 23 processing the diesel generator combustion air and the ventilating air.
During summer, outside air temperatures may require operation of the air washer sprays to cool the i
ventilating air supply during diesel operation.
Use of the l
water sprays in the combustion air section of the air washer is not required.
They may be used for dust or ash particulate removal as described below.
During periods of regional dust storms, or ashfall from a 29 volcanic eruption, the diesel combustion air supply oil bath air cleaner is sufficient to remove the expected quantities of dust or ash.
The air washer water sprays may also be manually placed in service as a backup to scrub airborne particulate from the diesel combustion air and ventilating air supply.
Use of the water sprays will be administratively controlled to preclude their use for dust i
9.4-66a Amendment 29
S/HNP-PSAR 12/22/82 or ash control during periods of low outside air temperatures which could produce icing in the air washer.
The oil bath air cleaners for the Standby Diesel Generator and the HPCS Diesel Generator have sufficient capacity to remove the dust or ash particulate resulting from the maximum potential dust storm or volcanic ashfall, thus ensuring an adequate supply of clean diesel combustion air during all conditions of operation.
As the oil bath air cleaner removes particulate from the air, it will approach its maximum particulate holding capacity at a rate which is dependent upon the concentra-tion of particulate in the air flowing through it.
When that capacity is reached, a portion of the sludge accumu-lated in the oil sump must be drawn off and replaced with clean oil.
The air cleaner will have a capacity for volcanic ash removal and retention in excess of that required to allow unrestricted diesel generator operation for the duration of the design basis volcanic ashfall (Section 2.5.1.2.7) or will be designed to allow inservice cleaning without affecting diesel generator operation or air cleaner efficiency.
29 The oil bath air cleaner will be supplied with an ordinary paraffin base mineral oil, without additives, selected to provide satisfactory viscosity characteristics over the range of temperature extremes expected for this site.
When low ambient temperatures do not prevail, the air washer sprays may be manually placed in service to remove the dust or volcanic ash particulate from the combustion air supply.
Diesel Generator Room ventilation air supply during dust storm or volcanic ashfall conditions is maintained dust-free by manual operation of the air washer sprays when ambient outside air temperatures permit.
Since ventilation air is required only for room cooling, the need for ventila-tion air during low ambient outside air temperature is mini-mal.
In the unlikely event of simultaneous occurrence of a volcanic ashfall, low outside air temperature and an event requiring diesel generator operation, the ventilating air supply fan will be administratively controlled to be manu-ally stopped from the control room, allowing the room temperature to rise to the high temperature alarm point before restarting the fan.
Once restarted, the ventilation air will be a mixture composed mostly of recirculated warm room air and some cold outside air replenishment.
This mixture of air will reduce the room temperature.
When the room low temperature alarm point is reached, the operator will once again manually stop the ventilating air supply 9
9.4-66b Amendment 29
S/HNP-PSAR 12/22/82 fan.
During these intermittent periods of fan operation, O
the mixed air temperature will be sufficiently high to manually operate the air washer sprays to prevent 29 accumulation of dust or volcanic ash in the Diesel Generator Room.
Each unit heater will be controlled by a room thermostat to maintain the required winter temperature as indicated in Table 9.4-1.
The bleed-off line with a partially open discharge valve connected to the spray pump discharge side will control the increase of total solids in the water caused by evapora-tion.
The concentration of volcanic ash or storm dust collected in the washer basin will be controlled by increas-ing the bleed-off flow rate or by opening the drain line for the washer basin.
23 The air washer supply fans, spray pumps, and motor operated dampers will be powered from the Class IE Low Voltage Power System described in Chapter 8.
The unit heaters will be powered from the normal power supply and will be seismic-ally supported to withstand SSE.
9.4.7.3 Design Evaluation OV The unit heaters in conjunction with the air washer supply units will maintain the design room temperature to assure the integrity and operability of the diesel generator and its components.
(
9.4-66c Amendment 29
r S/HNP-PSAR 12/21/81 TABLE 9.4-11 DIESEL GENERATOR ROOM H&V SYSTEM FAILURE ANALYSIS Components Malfunction Comments Fan, or water Failure of supply If one fan or spray spray pump fan or spray pump pump fails and the 23 resulting in loss supply system can-of duct pressure not maintain the or evaporative required design cooling and loss temperature, the of system capa-other division bility diesel generator H&V system will operate.
Instrumentation Instrument power Control actuators failure fail safe (open dampers) to allow operation of venti-lation cquipment.
Damper Actuators Actuator failure Control actuators fail safe (open dampers) co that ventilation can be initiated or main-tained.
Amendment 23
S/HNP-PSAR 12/22/82 TABLE 9.4-12 DIESEL GENERATOR ROOM H&V SYSTEM DESIGN PARAMETERS Air Washer Supply Units 23 Each Standby D/G Rm HPCS D/G Rm Quantity 1
1 Capacity, scfm 100,000*
48,000**
Supply fan Type Centrifugal Centrifugal 29 Capacity, scfm 70,000 33,000 Static pressure, "wg 3
2-1/2 Fan motor horsepower, hp 75 30 Water spray pump Type Centrifugal Centrifugal capacity, gpm 800 385 Total head, ft.
70 70 23 Pump motor, hp 25 15 Unit Heaters Each Standby D/G Rm HPCS D/G Rm Quantity 2 - each 50%
2 - each 50%
Fan Type Centrifugal Centrifugal Capacity, scfm 1,500 for 700 D/G Rm-I 23 700 for D/G Rm-II Fan motor, hp 1/2 1/4 Heating coil Type Electric Electric Capacity, kW 42 for D/G 1.8 Rm-I 18 for D/G Rm-II
O Amendment 29