ML20040B283
| ML20040B283 | |
| Person / Time | |
|---|---|
| Site: | Crane  |
| Issue date: | 01/20/1982 |
| From: | GENERAL PUBLIC UTILITIES CORP. |
| To: | |
| Shared Package | |
| ML20040B254 | List: |
| References | |
| NUDOCS 8201250348 | |
| Download: ML20040B283 (41) | |
Text
THREE MILE ISLAND NUCLEAR STATION UNIT 2 RECOVERY PROGRAM STAND 8Y REACTOR COOLANT PRESSURE CONTROL SYSTEM SYSTEM DESCRIPTION 1
Revision 1 l
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TABLE OF CONTENTS FOR STANDBY REACTOR COOLANT PRESSURE CONTROL SYSTEM Page Section
1.0 INTRODUCTION
1 1
1.1 System Functions 1.2 Summary Description of the System 2
3 1.3 System Design Requirements 2.0 DETAILED DESCRIPTION OF SYSTEM 4
4 2.1 Components 2.2 Instruments, Controls, Alarms and 7
Protective Devices 3.0 PRINCIPAL MODES OF OPERATION 13 3.1 Startup 13 3.2 Normal Operation 15 3.3 Shutdown 16 3.4 Special or Infrequent Operation 16 17 3.5 Emergency 4.0 HAZARDS AND PRECAUTIONS 17 l
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l i
APPENDIX t
Table No.
Titl e l
1 Standby Pressure Control Surge Tanks 2
Charging Pumps 3
Charging Pump Packing Cooling Sump Pump 4
Charging Water Storage Tank l
f 5
Borated Water Batching Tank l
6 Borated Water Transfer Pump 7
Variable Charging Pump k
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TMI UNIT 2 SYSTEM DESCRIPTION STANDBY REACTOR COOLANT PRESSURE CONTROL SYSTEM
1.0 INTRODUCTION
1.1 System Functions The functions of the Standby Reactor Coolant Pressure Control System are to:
Maintain the Reactor Coolant System in a water-solid condition a.
for long term reactor core natural circulation cooling by automatically compensating for coolant volumetric decreases in the Reactor Coolant System due to system leakage or thermal contraction.
b.
Maintain the Reactor Coolant System pressure at 100 + 10 psig with the Pressurizer solid and Pressurizer heaters out of service.
Provide adequate NPSH to the reactor coolant pumps if it becomes c.
necessary to use one.
This was an original design function of the system and is no longer required in the reduced pressure mode of operation.
NOTE:
This system is designed to maintain pressure on the RC System, not relieve pressure.
It is possible to have an RC system pressure higher than standby pressure control system pressure.
The Standby Reactor Coolant System Pressure Control System interfaces with the following systems:
a.
Reactor Coolant Makeup and Purification.
b.
Demineralized Water.
c.
Instrument Air.
d.
Balance of Plant Electrical MCC 2-32A, MCC 2-42A and USS 2-45.
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1
1.2 Sumary Description of the System 3
l The Standby Reactor Coolant Pressure Control System is used to maintain the Reactor Coolant System pressure within + 10% of a set l
value by maintaining the volume of the solid Reactor'~ Coolant System.
1 Borated water degassed to less than 15cc (STP)/kg and less than 100 ppb oxygen is added from the Standby Pressure Control Surge Tanks to the Reactor Coolant System through the MU-P-1C discharge lines.
1 Three 900 gallon surge tanks are connected in series and pressurized Only the most with nitrogen at the desired reactor coolant pressure.
remote tank from the Reactor Coolant System is normally directly 4
pressurized with nitrogen to minimize the amount of nitrogen in solution, by keeping the water to gas interface to a minimum, l
i The Nitrogen Pressure Control System consists of 2 banks of 6 cylinders connected to a connon header.
Each cylinder contains 56 One bank of N2 Cylinders is in the water cubic feet of nitrogen.
operating mode with pressure maintained between 225 psig and 375 Cylinders is in the non-operating mode j
psig. The other bank of N2 with pressure maintained greater than 400 psig but less than 800 psig i
Pressure and is used for periodic makeup to the operating cylinders.
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to the surge tanks is remotely set and maintained automatically by l
two 100% nitrogen regulators for normal and expected transient flow rates of nitrogen addition. Two additional regulators (100% each) i are provided for manual control of system pressure and are nonna11y i
isol ated.
The surge tank levels are maintained by supplying makeup degasified borated water to the system through a Variable Charging Pump (VCP) or
]
These pumps take suction either of two redundant Charging Pumps.
from the Charging Water Storage Tank (SPC-T-4), and discharge to the outlet line from the surge tank nearest the Reactor Coolant System.
Normally the VCP functions to add makeup water to the system at approximately the same rate as primary leakage, thus holding level and pressure in surge tank SPC-T-3 constant.
Large volume additions If the Variable into the system are met by the two Charging Pumos.
Charging Pump is not available one of the Charging Pumps would start The nitrogen in tank SPC-T-3 is compressed, on low level in SPC-T-3.
raising the pressure of the Standby Pressure Control System and the RC System to the vent regulator setpoint. Nitrogen is automatically vented from the surge tank inlet if ne to preclude pressure from exceeding 10% of setpoint pressure as the water level rises to the The Charging Pump is automatically tripped at high level setpoint.
the high level setpoint, and the vent regulator then closes, leavingAs the system at a pressure 10% or less above the original s.etpoint.
the system makes up for reactor coolant leakage, the level in surge tank SPC-T-3 drops, and the pressure decreases to the regulators' 11 e system will continue to cycle in this manner from the setpoints.
set pressure to +10% or less until the system pressure setpoints are 1.-.
changed. Without the VCP operating to maintain a stable level, die lead charging pump will cycle on for 6 minutes and off for 60 minutes, based on the 4 opa design leakage rate.
Makeup to the Charging Water Storage Tank is from die Borated Water Batching Tank.
W1en level in the Charging Water Storage Tank (CWST) readles the low end of the normal range, borated water at 3500-4500 ppm boron is mixed and transferred under manual control from die Borated Water Batching Tank until the Charging Water Storage Tank level is restored.
The surge tanks can be recirculated to the 01arging Water Storage Tanks to ensure die boron solution remains homogeneous.
Recirculation is accomplished by circulating water via SPC-P-1A, -18, or -3 through SPC-T-1, SPC-T-2, SPC-T-3 and dirottling the discharge to SPC-T-4 ud th eldier SPC-V-18B or SPC-V-128 to maintain level in SPC-T-3.
The Standby Reactor Coolant Pressure Control System components are located in the new fuel storage cell on the 331' level and at die 347' level of die Fuel Handling Building.
The Standby Reactor Coolant Pressure Control System is connected to the RC System through existing high pressure injection piping on die discharge of the Makeup Pump MU-P-lC.
Locked-closed isolation valves are provided to ensure the makeup pumps do not discharge to the RC Pressure Control System.
l.3 System Desion Requirements The Standby Reactor Coolant Pressure Control System is operated to control the reactor coolant pressure at 100 + 10 psic continuously.
Operation of die SPC System with nitrogen gas pressures between 225-375 psig produces an 80 gom injection rate into the RCS thich is great enough to cover the design maximum shrink and Witch, concurrently, will not overpressurize die lower design pressure interconnected systems. Operation of the SPC at pressures higher dian 400 psig could conceivably result in overpressurization assuming subsequent failures of die control valves coupled with failure of die SPC dump valve. To preclude 911s from occurring die gas pressure in die operating bank of nitrogen cylinders is reduced to 22$-375 psig to allow SPC operation concurrently udth DH-V1 or 171 opened and with a lower design pressure system exposed. This operating band will allow some margin between system operating pressure and the maximum pressure (400 psig) diat system pressure relief can accommodate.
i,
4 Redundant instrumentation and controls are provided for all essential active components to ensure system reliability.
System piping, in accordance with ANSI B31.1.except for the nitrogen piping of the is designed to the Compressed Gas Association Standards.The nitr The design pressure is 600 psig for the liquid syst tie-in isolation check valves, and 1500 psig from the two check valves to the tie-in point on the high pressure injection line.
nitrogen piping through the regulator outlet stop valves is designed The for 2500 psig.
nitrogen piping is designed for 600 psig. Downstream of the reg Provision is made for the addition of chemicals to the system sampling points are provided at the CWST outlet and the surge, tank and outlets.
Provision is also made to establish and maintain a low pressure nitrogen blanket in the CWST to reduce the dissolved oxygen gas concentration in the system to less than 100 ppb.
2.0 DETAILED DESCRIPTION OF SYSTEM 2.1 Components 2.1.1
_ Standby Pressure Control Surge Tanks, SPC-T-1 through T-3 the new fuel storage cell to provide for insurge to The tanks have a capacity of 900 gallons each, and are rr.ted at 2735 psig and 300 *F.
The tanks are ASME Section III, Class 2.
Tank The inlet lines are provided with taps for two redundan transmitters.
to accommodate the level transmitters.Each tank is provided with no 2.1. 2
_ Charging Pumps, SPC-P-1 A, SPC-P-lE l
Two 40 gpm positive displacement Charging Pumps (Table 2) take a either 40 or 80 gpm of degasified,160*F water into downstream of Surge Tank SPC-T-1.
331' in the Fuel Handling Buildin Both pumps are located at elev.
powered from MCC 2-32A (SPC-P-1 A)g and are 480V, 3 Phase, 60 Hz, and MCC 2-42A (SPC-P-18).
Each pump is protected from the potential effects of an overpressure condition by a backpressure - compensated relief valve set at 600 psig on the discharge, and a thermal relief valve set at 80 psi on
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i the suction. The pump discharge relief valve relieves to the suction i
line and the suction relief valve relieves to a 55 gallon drum open This arrangement minimizes the potential for j
to the atmosphere.
liquid discharge.
l 1
l Each Charging Pump is also provided with a self-contained primary A packing cooling pump (Table 3) supplies packing cooling system.
l demineralized water from a tank to the zone between the high pressure and low pressure packing of the cylinders, and returns the water to the cooling tank.
1 2.1. 3 Charging Weter Storage Tank, SPC-T-4 The Charging Water Storage Tank (Table 4) is a 5100 gallon capacity tank located on the 347' elevation of the Fuel Handling Building.
It serves as a holdup /degasification point from which the VCP and the 40 The gpm Charging Pumps transfer borated water to the surge tanks.
tank is provided with external strip heaters totaling 113.4 KW that maintain tank water temperature at 160*F for degasification pur-The heaters are powered from USS 2-45, and are 480V, 3 Phase, poses.
60 Hz. Since the tank is at an elevated temperature, it is insulated with 2" of insulation.
The CWST is also provided with two pressure regulators in series to supply low pressure nitrogen (1 to 2.5 psig.) from the nitrogen storage cylinders. A vent line with a manual vent valve and flow meter is provided to purge air from the tank while makeup is supplied by the nitrogen regulators.
In addition to supplying a holdup volume serving the pumps, the tank has provision for a continuous spray from the combined charging pump discharge header so that spray may be actuated for degasification whenever a charging pump is operating. The recirculation line also provides for bypass flow to allow the VCP to operate continuously within its control band with RC leakage less than 2 gpm.
To further meet the overall system total dissolved gas criteria of 15 cc/kg and 100 ppb oxygen, a flow path may also be established from the outlet of the first surge tank (SPC-T-3), into the Charging Water Storage Tank such that a continuous discharge flow from the surge tank may be established to degas the surge tank water..To maximize the effectiveness of this operation, the level in SPC-T-3 is reduced to a minimum.
2.1.4 Borated Water Batching Tank, SPC-T-5 The Borated Water Batching Tank (Table 5) is located on the 347' level of the Fuel Handling Building.
It provides for batch mixing of boric acid and demineralized water (500 gallon batches). Hydrazine j
is also batch mixed to scavenge oxygen.
i The Borated Water Batching Tank is a 632 gallon, austenitic stainless steel tank with a hinged cover for boric acid addition. The maximum useful volume of the tank is 500 gallons. The tank has an internal j
level gauge with 10 gallon graduations up to 500 gallons. The tank 1
is provided with three 15 KW heaters, powered from MCC 2-32A, which are manually energized to heat the water to aid in dissolving the boric acid and degasing the water. The tank is filled with de-mineralized water at approximately 20 gpm using hoses from the Cask Cleaning Station on the 347' level in the FHB. To enhance the batch mixing process, a motor operated mixer is provided. The mixer is powered from MCC 2-32A, and is 480V, 3 phase, 60 Hz.
1 2.1. 5 Borated Water Transfer Pump, SPC-P-2 The Borated Water Transfer Pump (Table 6) is located on the 347' level of the Fuel Handling Building, and is used to transfer borated
)
water from the batching tank to the Charging Water Storage Tank. The pump has a capacity of 50 gpm at a 35 foot discharge head. The l
i Borated Water Transfer Pump motor is 480V, 3 phase, 60 Hz., and is powered from MCC 2-32A.
t 2.1. 6 Nitrogen (N ) Supply 2
l The nitrogen supply subsystem of the Standby RC Pressure Control System is located on the 347' level of the FHB.
Nitrogen is supplied to the RC Pressure System from two racks of six N2 cylinders each. The cylinders are arranged in a paralleled 3'
array with one rack aligned to provide N2 to the RC Standby Pressure Control System at all times. Each bottle has a capacity of 56 water cubic feet at up to 2400 psig. One rack is sufficient to meet design transient requirements.
Each manifold is provided with overpressure protection in the form of two relief valves, set to relieve to the atmosphere at 2450 psig.
Each cylinder is also protected against overpressure by a rupture disc set between 3307 and 3675 psi.. _ _ -.. _
. ~ _.. _ _ _ _
2.1.7 Nitrogen Reducing Station The nitrogen reducing station consists of four control regulators, two or thich are set by manually adjusting die loading regulators and two which mAy be controlled from die Unit 2 control room. Each regulator is sized to accomodate die design surge rate of die system. These valves are set such d1at they provide the desired N2 pressure to Surge Tank SPC-T-3.
The N2 reducinq station also provides overpressure protection for the pressure reducing valve manifold udth a relief valve set at 600 psi g.
Provision exists to automatically vent die N2 inlet line to Surge Tank SPC-T-3 through a manually-adjustable backpressure regulating valve station located downstream of die N2 manifold outlet check i
valve. The regulating valve is adjusted f rom die control room. Thi s is die normal way to maintain SPC-T-3 pressure within 10% of die setpoint pressure during refill of SPC-T-3.
j 2.1.8 Variable Charging Pump, SPC-P-3 The Variable Charging Pump (Table 7) takes a suction on the Charging Water Storage Tank (SPC-T-4) and discharges into die surge line downstream of Surge Tank SPC-T-1. The pump is located at elev. 331' in the Fuel Handling Building and is powered from MCC 2-42A, Pump capacity is automatically adjusted from 2 to 10 GPM by a level signal l
from surge tank SPC-T-3.
The pump is protected from die potential effects of an overpressure condition by a discharge backpressure-compensated relief valve set at 600 psig and a suction (thermal) relief valve set at 80 psia. The suction relief valve relieves to a 55 gallon drum open to die a tmosph ere. The pump discharge relief valve relieves to the suction line and dien via the suction (diermal) relief valve, if it's I
setpoint is exceeded, to a 55 gallon drum open to the atmosphere.
2.2 Instruments, Controls, Alarms, and Protective Devices System instrumentation and controls are listed in Table 8 and panel mounted annuciators and computer inputs are listed in Table 9.
Three panels are provided for controls and indication. One panel, SPC-PNL-1, contains local controls near the surge tanks at elevation 331' in the fuel handling building. The second panel, SPC-PNL-2, contains local controls for the borated water batching tank and transfer pump at the 347' level. The third panel, SPC-PNL-3, is located in the control room, and contains the remote instrumentation, and controls.
Instrumentation and controls are summarized below by the equipment or function they serve.
2.2.1 Surge Tanks, SPC-T-1, 2, 8 3 a)
SPC-T-1 SPC-T-1 has two differential-pressure level transmitters (SPC-LIT-1 A & B) each providing local and remote indication.
In 1
addition, one level transmitter (1B) provides local and remote low level alams, and an interlock to close outlet valve SPC-Y71 l
A conductivity type level element is also located on low level.
at the low level setpoint to close outlet valve SPC-Y71 and to i
actuate local and remote low level alanns.
l l
b)
SPC-T-2 SPC-T-2 has two level transmitters (SPC-LIT-2A & B) for local l
and remote indication only.
c)
SPC-T-3 SPC-T-3 has two level transmitters, (SPC-LIT-3A & B) each of which provides local and remote indication, high level charging pump stop signal, local and remote high-high level alam, low level charging pump start signal, and local and remote low-low level alarm and backup charging pump start signal.
In addition, the "A" Instrument loop generates the proportional adjustable level control signal and the high and low level cycling control for the Variable Charging Pump SPC-P-3.
J I
2.2.2 Yariable Charging Pump SPC-P-3 The Variable Charging Pump flow rate is normally controlled by a proportional signal from SPC-LIC-3A. Should level decrease to the low level setpoint the pump would get a start signal from SPC-LSL-3A. - -.
The pump also has start and stop pushbuttons and indicating lights on SPC-PNL-1 and 3.
The pump shuts off automatically on high level in SPC-T-3 or low-1w level in SPC-T-4, the Charging" Water Storage Tank. The pump can be shut off using an "overide control switch which is located and alarmed on SPC-PNL-3. The pump will restart automatically when the appropriate tank level has been reestablished and the level switch resets.
There is local suction and discharge pressure indication, and local and remote discharge flow indication.
j 2.2.3 Charging Pumps SPC-P-1 A & B The charging pumps are operated as lead and backup pumps in the event the variable pump cannot maintain the level in SPC-T-3. Selection of the lead pump is made at SPC-PNL-3, in the control room. The lead pump is started by a low level signal from the associated switch (SPC-LSL-3A or B) for SPC-T-3.
The backup pump receives a start signal (from SPC-LSL-3A or B) if the level continues to fall to the low-low alarm point.
Each pump has start and stop pushbuttons with indicating lights on panel s SPC-PNL-1 and SPC-PNL-3. The pumps shut off automatically on high level in SPC-T-3, or low-low level in SPC-T-4.
In addition each pump can be shut off using an " override" control switch which is located and alamed on SPC-PNL-3.
There is local pressure indication at the discharge of either pump, and local and remote flow indication in the comon line to the surge tanks. The pumps share a comon suction pressure indication with the VCP.
The charging pumps each have an integral packing cooling system with a cooling pump, flow meter, pressure gage, and pressure switch. The cooling pump is started automatically when the charging pump starts.
Since the charging pumps can run without cooling water for an ex-tended period of time the cooling water pressure switch only provides a control room alam on low pressure The packing cooling tank has provision for automatic filling, con-trolled by a level switch and solenoid valve. This feature is not used since leakage from the high pressure seals into.the cooling system normally exceeds system losses thereby providing a constant overfl ow. Manual filling, if required, should be initiated at 1/4 full, refilling to the 3/4 mark. Cooling water flow is adjusted. -_
Y 9
manually to meet pump requirements. Heat is dissipated to the air, j
and no external cooling water is required.
2.2.4
_ Charging Water Storage Tank SPC-T-4 e;
The storage tank has temperature instrumentation which provides local I
and remote indication and combined high/ low temperature alams. A temperature controller and a local on/off handswitch provide auto-matic control of the strip heaters mounted on the tank.
Level instrumentation provides local and remote indication, local and remote high and low level alams, low level heater shutoff, and the interlocks to stop pumps SPC-P-1 A,18, a 3 on low-low level, as described above.
The tank also has a local flow indicator in the vent line discharge path.
2.2.5 Borated Water Batching Tank, SPC-T-5 and Transfer Pump, SPC-P-2 All controls and indications associated with the Batching Tank and Transfer Pump are local.
The control switches are mounted on panel SPC-P-2.
The Batching Tank is provided with a manually operated mixer and three manually operated 15 KW heaters. Temperature indication for the batching tank is provided locally. The tank also has an internal 0-500 gallon level indication.
The Borated Water Transfer Pump is manually operated.
Indicating lights are provided on the local control panel. A discharge pressure gauge is provided.
2.2.6 Nitrogen Supply Each N2 supply header is provided with two pressure indicators, and two cylinders within each bank are provided with temperature in-dicators.
In addition, a local pressure indicator and local and remote low pressure alams are provided downstream o.f the header. A flow indicating switch with local and remote high flow alams are also provided upstream of the regulators to alert the operator of a high flow condition.
Pressure gages are provided for both inter-mediate and final nitrogen supply pressure to the CWST..,
.w
2.2.7 Nitrogen Reducing Station _
t Four pressure reducing valves, SPC-PRV-2A through 2D, are provided for N2 pressure control. Regulators 2A and 28 are normally used since their setpoints can be controlled from the control room and regulators 2C and 2D are isolated and reserved for backup operation.
The regulator valves are controlled by gas pressure on their operators. Each operator is supplied with nitrogen from the line upstream of the associated regulating valve. The line nitrogen pressure is reduced by a fixed-setpoint pressure reducing valve before it is supplied to the operator. The operators for regulating valves 2A and 2B also have an air supply from the Instrument Air System. Since the valve operators continuously bleed off the operating gas, the instrument air is normally used, and the nitrogen supply is isolated.
Two pressure control channels are provided, one for each remotely controlled regulator.
Instrument loop 16 controls regulator 28, and loop 17 controls regulator 2A. Each instrument loop can be adjusted,
~
at SPC-PIC-16 & 17 in the control room, to set desired SPC system I
pressure. The preferred loop is set to the desired pressure, and the backup loop is set slightly lower. A handswitch on SPC-PNL-3 is used to select the preferred loop setpoint for use in comparing actual pressure to set pressure, as described in 2.2.8.
Each regulator, 2A through 2D, has local pressure indication of the N supply to its actuator. Local and remote pressure indication is also provided for each regulator control loop, and local indication is provided at the control loop tie-in point.
2.2.8 RC and SPC Pressure and Differential Pressure Local and remote RC pressure is available from the temporary nuclear sampling (SNS) system, and from the decay heat removal system between DH-Y3 and the RB penetration. Local and remote SPC system pressure is available from downstream of SPC-V71.
Reactor coolant pressure at the DHR system is compared to SPC system pressure, and the differential pressure is displayed on SPC-PNL-3.
Local and remote alams are provided for high differential pressure in either direction.
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The SPC actual system pressure is compared to the desired pressure set in either of the two pressure reducing control loops. A hand-switch on SPC-PNL-3 is used to select the operating control loop for this comparison.
Local and remote alanns are provided for a high differential, in either direction, between desired and actual system pressure.
2.2.9 Surge Tank Outlet Valve SPC-Y71 The outlet valve is controlled by switches on panels SPC-PNL-1 and 3.
The switches are three-position, open and close with spring return to mid-position. The valve normally travels to the fully open or shut position automatically. However, should the control relays fail, the valve can be operated by holding either control switch until valve travel is completed, as indicated by position lights on either panel.
The valve is interlocked, as described previously, with two low level signals from SPC-T-1, to close before the tank drains, to prevent nitrogen injection into the primary system. Should this occur, the valve can be opened by holding either control switch in the open position.
A limit switch on the valve provides local and remote alarms whenever the valve is in an abnonnal position (i.e. not fully open). Note that if the valve is shut by a low level signal from SPC-T-1, this alann is to be expected and does not indicate a fault.
2.2.10 Protective Devices 2.2.10.1 Nitrogen Supply System l
l Each nitrogen storage tank has its own rupture disk set between 3307 and 3675 psig.
Isolatable sections of the tank header have in-dividual relief valves, SPC-R5A, R5B, R6A, and R68, set at 2450 psig.
A 50 psig relief, SPC-R13, is located between SPC-PRV-4 and SPC-PRV-5 I
in the N2 supply line to SPC-T-4.
Relief valves SPC-R11 A and B, set at 100 psig., protect the operators for regulating valves SPC-PRV-2A and B..
The N2 supply to SPC-T-3 is protected by three relief valves.
SPC-R4 is set at 600 psig., and SPC-R3 is set at 1000 psig.
SPC-PCV-14 is an adjustable backpressure control valve, operated by It gas pressure, similarly to regulating valves SPC-PRV-2A and 28.
also has both nitrogen and instrument air supplies with instrument air preferred. The relief sepoint is selected on SPC-PNL-3 in the control room to be sligh'ly higher than the system set pressure in the preferred regulator control loop. Relief valve SPC-RIO protects the operator of SPC-PCV-14 at 100 psig.
2.2.10.2 SPC Fluid System The charging water storage tank is protected by relief SPC-R12, set Charging pumps SPC-P-1 A,1B, a 3 are protected by 600 at 75 psig.
psig reliefs SPC-R1 A,18 and 8 on the discharge, and 80 psig thennal reliefs SPC-R2A, 28, and 9 on the suction.
Two relief valves are located in the surge line to the reactor coolant system. Valve SPC-R7 is set at 600 psig for normal SPC system operation. Yalve SPC-R14 set at 125 psig., is used when the mini decay heat removal system is in operation, by locking open the isolation valve SFC-V17.
3.0 PRINCIPLE MODES OF OPERATION 3.1 Startup 3.1.1 Initial Fill a
Prerequisities to initial fill include the availability of approx-imately 6600 gallons of demineralized water and sufficient boric acid pcuder (1100 to if.100 pounds) to bring the demineralized water to a borated level of 3500 to 4500 ppm.
The demineralized water and boric acid are mixed in the Borated Water Batching Tank in 500 gallon, 3500-4500 ppm batches. Approximately 14 batches will be needed.
The batching tank is filled with water and heated beforeladding the boric acid, to reduce the dissolving time. The acid is added and mixed, and the solution is transferred to the CWST using the Borated Water Transfer Pump. The CWST is filled to approximately 3000 gall ons. The CWST heaters are then energized, and filling continues -.. -. - _ _ _... -
l to approximately 4500 gallons. The tank should be kept at operating temperature for at least one hour for degassification to less than 15 cc/kg total gas.
Air is then purged from the CWST gas space by establishing a one to two psig nitrogen supply to the CWST and then opening the vent line to purge 6 SCFM for one hour. The oxygen concentration of the water is then detemined, and hydrazine is added and recirculated with a charging pump for approximately four hours until the oxygen con-centration is below 100 ppb.
With nitrogen pressure on the surge tanks set to a minimum, the charging pumps are filled and vented, and the surge tanks are filled through SPC-V71 by operation of one charging pump. Charging continues until SPC-T-3 is approximately 3/4 full. Nitrogen pressure is controlled at about 10 psig while the system is vented via SPC-PCV-14. The CWST is refilled with boric acid to approximately 4500 gallons. Manual venting of the CWST is required during fil-ling. Sampling of, and hydrazine addition to, the CWST is repeated as necessary to bring the oxygen concentration below 100 ppb.
3.1.2 Startup Prerequisites for startup include a filled, degasified system and a
- ,ufficient nitrogen supply to ensure that nitrogen pressure will not fall below 225 psig in the operating N2 bank.
In addition, prerequisities associated with the RC system concerning taking the plant solid shall have been satisfied. Makeup Pump MU-P-1C supply breaker must be racked out, MU-V144C, Y147, V148, and V436 must be closed and locked.
(See 0.P. 2104-1.14 Section 4.1 for Additional Nonnal System Startup details. )
With the Reactor Plant solid and pressure below 550 psi, SPC-V5 is locked open, and MU-V16C & D, and SPC-V71 are opened. This provides a flow path for water from the Pressure Control System to insurge to the RC system as necessary to maintain pressure. When instructed by the Control Room, the plant is placed in the Standby Pressure Control mode by gradually increasing surge tank pressure by adjusting regulator SPC-PRV-2A and 2B setpoints until the RC system pressure responds to surge tank pressure.
Note: Pressure control, while in this mode, is limited to makeup from the Standby Pressure Control System into the RC system.
Whenever RC pressure is higher than surge tank pressure, the SPC system is not controlling RC System pressure..
2 supply system is placed in automatic operation by setting The N the preferred pressure regulator (SPC-PRV-2A or B) to desired RC pressure, the standby regulator (SPC-PRV-2B or A) to a slightly lower pressure, and the variable backpressure control valve SPC-PRV-14 to a The preferred regulator setpoint is slightly higher pressure.
selected for input to the SPC actual vs SPC setpoint differential pressure alam circuits.
In a similar manner the system can be started up under local manual control, using regulators SPC-PRV-2C and 2D. However, in this mode of operation the SPC actual vs. SPC setpoint differential pressure alam does not receive the setpoint input from the regulator in use, and can therefore be misleading.
The charging system is placed in automatic operation by energizing the three pump control circuits, and selecting the lead charging pump, SPC-P-1 A or B.
All further pump operation is automatically controlled by level switches.
With charging recirculation valve SPC-V56 open, the Variable Charging Pump is started and operated near minimum capacity. Valve SPC-V56 is throttled until the pump discharge pressure is just below surge tank pressure, and the pump is placed in automatic proportional control.
The pump will then supply makeup to the surge tanks as required without operating below its minimum flow rate.
Periodic adjustment of SPC-V56 is required to maintain optimum perfomance.
The perferred mode of recirculation is accomplished by operating SPC-P-1 A, -1B or -3 to circulate water through all three surge tanks and throttling the discharge to SPC-T-4 with SPC-V-18B or 128 to maintain level in SPC-T-3.
For additional details see 0.P. 2104-1.14 Section 4.9.
3.2 Nomal Operation Nitrogen gas flow to the surge tanks for maintaining system pressure is automatic. Operation of the VCP to maintain constant level minimizes the frequency for recharging the two racks of N2 cyl-inders. Operation of the SPC System with nitrogen gas pressures between 225-375 psig produces an 80 gpm injection rate into the RCS which is great enough to cover the design maximum shrink.and which, concurrently, will not overpressurbe the lower design pessure interconnected systems.
l f :
L
Makeup water requirements are satisfied by the VCP to maintain surge tank level constant with minimum recirculation flow to the CWST as required to operate the VCP within its control range. Charging Water Storage Tank levels are maintained by the periodic transfer of water from the Borated Water Batching Tank. Sampling and hydrazine additions are periodically perfonned to maintain the oxygen concen-tration below 100 ppb.
System parameters must be continuously monitored to ensure continued safe system conditions. Operations at the design (not expected) leak rate of 4 gpm will require continuous boric acid mixing (i.e. 4 gpm is 5760 gallons per day or 11.5 batches per day, which allows 2 hours2.314815e-5 days <br />5.555556e-4 hours <br />3.306878e-6 weeks <br />7.61e-7 months <br /> per batch).
3.3 Shutdown If the system is to be shutdown, valves SPC-V71, MU-V16C and MC-Y16D should be closed.
If the snutdown is long tenn, the N2 supply manifold should be isolated and pressure bled off from the first surge tank (SPC-T-3) via SPC-PCV-14 and the Charging Water Storage Tank heaters should be secured. The operating charging pump SPC-P-3 should be secured. Note that these steps should not be taken unless another means of maintaining a positive pressure on the RC System is available, or the RC System is to be totally depressurized.
3.4 Special or Infrequent Operation The nitrogen cylinders are recharged from comercial nitrogen tube trailers connected to the tube trailer discharge station in the railroad bay of the Fuel Handling Building. One bank of nitrogen cylinders should remain lined up to the surge tanks during refilling cperations.
The contents of surge tanks SPC-T-1 and 2 can be recirculated via the CWST for degassing by using a Charging Pump to feed water to the outlet of SPC-T-1, and throttling the return flow from SPC-T-3 to the CWST with valve SPC-V18B or SPC-V128. The level in SPC-T-3 should remain steady, preferably low, just above the minumum level required (400 gallons or 35%) for the design transient.
liydrazine can be added using the chemical addition flush in the pump discharge line.
3.5 Emergency If a design transient occurs, the water level in SPC-T-3 will drop below the low level setpoints and one or both charging pumps will start. Normal pump operation will resume when the Charging Pumps overcome the transient and refill SPC-T-3 to the high level setpoints.
If the water level drops to the low level setpoint in SPC-T-1 the surge line outlet valve SPC-V71 will shut to prevent infecting nitrogen into RC system. The charging pumps would continue to run until the CWST low-low level is reached.
Should the RC System to SPC System high D/P alarm sound, imediate corrective action must be taken to ensure the primary side pressure does not increase to 600 psig.
If the pressure does increase to 600 psi, the makeup isolation valves MU-V16C&D must be closed.to ensure the Standby RC Pressure Control System is r.ot overpressurized through check valve leakage. The D/P alarm can be due to high D/P in either direction.
If the D/P is high from SPC to RCS, SPC-Y71, SPC-VS, and MU-Y16C and D must be verified open.
4.0 HAZARDS AND PRECAUTIONS 4.1 Do not operate for sustained periods of time with water level being maintained in a surge tank other than SPC-T-3.
4.2 There is no external level indication for the Borated Water Batching Tank. The water level must be determined visually so that the tank is not emptied with the heaters energized or the Borated Water Transfer Pump running.
4.3 Do not attempt to operate the Charging Pumps or the YCP with the suction or discharge valves closed.
4.4 Piping from the CWST to the Charging Pumps may be hot (due to heating in the CWST) and could present a burn hazard.
(Piping from BWBT to CWST is insulated).
4.5 Do not allow non-operating N2 bank pressure to fall below 400 psig and operating nitrogen bank below 225 psig.
1 1
--. - ~ ~... - - -
4.6 In the event of a transient causing low level alams in SPC-T-3 cr SPC-T-1, verify proper automatic operation of SPC-P-1 A & B and SPC-Y71, respectively, or take manual control.
4.7 Deleted.
4.8 Makeup pump MU-P-1C must have its breaker racked out and discharge valves MU-Y144C,147,148 and 436 closed at all times to ensure the system is not inadvertently pressurized due to Makeup Pump operation.
4.9 Do not run the Variable Charging Pump over 1200 rap.
4.10 Do not pemit the level in surge tank SPC-T-3 to fall below the minimum level (400 gallons or 35%) required for the design transient, while recirculating to the CWST during degasification.
4.11 The CWST must be manually vented, and transfer flow verified when operating the borated water transfer pump to avoid running the pump at shutof f head.
4.12 SPC-Y-17 must be open to SPC-R14 during Mini-Decay Heat Removal Mode of Operation.
4.13 The non-operating nitrogen bank pressure shall be equal to or less than 800 psig during Submerged Demineralizer Cask Transfer.
i
. 1
4 TABLE 1 STANDBY PRESSURE CONTROL SURGE TANKS Identification SPC-T-1, SPC-T-2, SPC-T-3 Number Installed Three Nhnufacturer Southwest Fabrication Co.
Capacity, gallons 9 00 Installation Vertical Outside Diameter & Height 54.17" x 166.55" Shell Material Stainless Steel Design Temperature, 7:
300 Design Pressure, psig 2735 Corrosion Allowance, in.
None Design Code ASME III, Class 2 Code Stamp required "N"
Material Thickness 3-1/8" e g.-. y.
.. ~
TABLE 2
)
CHARGING PUMPS l
Pump Details Identi fication SPC-P-1A, SPC-P-1B Number Installed Two Manufacturer Gaulin Corp.
Model No.
NP18 Type Triplex Positive Displacement Rated Speed, RPM 180 Rated Capacity, GPM 40 GPM Rate Total Dynamic Head, psig 3010 NPSH Required, psia 4.1 psia Design Pressure, Casing, psig 4700 Design Temperature, 'F 2 50 Lubricant / Coolant Oil / Water (for seals)
Motor Details Manufacturer Louis Allis (Pacemaker)
Induction (C0G4C9)
Type Enclosure Open Drip Proof Rate HP 100 Speed, RPM 1775 Lubricant, Coolant Grease /Afr Power Requirements 480V, 3 Phase, 60 Hz,118 Amps (full load)
Power Source SPC-P-1A, MCC 2-32A SPC-P-18, MCC 2-42A O
l
) _ _ _ _ _.
TABLE 3 CHARGING PUMP PACKING COOLING SUMD PUMP i
I Pu'mp Details Two (one per unit)
Number Installed Eastern l
Manufacturer SD-11 Type 103 & 104 1
Model No.
Stainless Steel Centrifugal Type 3450 Rated Speed, RPM 6 GPM (max. at 7 psi head) 3 Rated Capacity, GPM 20 psi (Max. at shutoff)
Rated Pressure, psig Motor Details Ohio Electric Manufacturer Split Phase Induction Type Totally Enclosed Enclosure 0.20 Rate HP 3450 Rated Speed, RPM Lubricant / Coolant Grease / Air 115Y,1 Phase, 60 Hz, 3.2 Amps Power Requirements (full load)
LPF-4C (Pump 1 A)
Power Source LPF-4D (Pump 18) t
- e 0 _
~ ' '
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TABLE 4 CHARGING WATER STORAGE TANK Identification SPC-T-4 Manufacturer Progres Equipment Co., Inc.
Capacity, gallons 5110 total, (4185 Max. operating cap)
Installation Vertical Outside Diameter & Height 8' O.D. 818' High Shell Material SA-240 Design Temperature
- F 250 Design Pressure, psig 75 Corrosion Allowance, in.
None Design Code ASME Section III, Class 2 Code Stamp required "N"
Material Thickness, in.
0.4375 Heater Details Capacity, KW 113.4 Type Strip P.wer Requirements 480V, 3 phase, 60 Hz Power Supply USS 2-45 0
0 0 i
TABLE 5 BORATED WATER BATCHING TANK Identification SPC-T-5 Manufacturer CE Air Preheater Capacity, gallons 632 Installation Vertical Outside Diameter & Height 60" 0.D. & 72" High Shell Material Stainless Steel Design Temperature, *F 200 Design Pressure, psig Atmospheric Corrosion Allowance, in.
None Design Code None Material Thickness, in.
3/16 Heater Details Nunber Installed Three Manufacturer Emerson Model Number Type Immersion Capacity, KW, per heater 15 Power Requirements 480V, 3 Phase, 60 Hz, Amps (full load)
Power Source MCC 2-32A Mixer Details Manufacturer LFE Corporation Model No.
RS-3 Type Clamp on Propeller RPM Shaf t length (intake)
Shaft Material Propeller Material Motor Details V.:..* acturer Duty Master Type P
Enclosure Rated HP 1/2 Speed, RPM 1140 Power Requirements 480Y, 3 Phase, 60 Hz Code L
Power Source MCC 2-32A -
TABLE 6 BORATEU WATER TRANSFER PUMP Identi fication SPC-P-2 Number Installed One Manufacturer Ingersoll Rand Type 40C Rated Speed, RPM 1745 Rated Capacity, GPM 50 Rated Total Rynamic Head, ft.
35 NPSH, ft.
3 Design Pressure, Casing, psig 525 Design Temperature
- F 350 Lubricant / Coolant Oil / Air Min. flow Requirements, GPM 22 Motor Details Manufacturer Gould Type SC Enclosure Open Drip Proof Rated HP 1.5 Speed, RPM 1745 Lubricant / Coolant Sealed bearings / Air Power Requirements 480V, 3 Phase, 60 Hz Pmver Source MCC 2-32A 0
0.....
i TABLE 7 VARIABLE CHARGING PUMP l
i i
Identification SPC-P-3 Number Installed One Manufacturer Cat Pumps Model No.
820 j
Type Positive Displacement Max. Allowable Speed, RPM 1200
);
Rated speed, RPM 190 to 940 Rated Capacity, GPM 2 to 10 Rated Total Dynamic Head, ft.
1000 l
Required Inlet Pressure, psig
-8.5 at 140*F, 0 at 160*F,
+5 at 165'F Design Pressure, Casing, psig 1000 Design Temperature, *F 180 Lubricant / Coolant Dil / Air Motor Details Manufacturer US Motors Type YEY-1 -TF-GD Rated HP 7.5 Speed, RPM 190 to 1575 Lubricant / Coolant Oil / Air Power Requirements 480V, 3 Phase, 60 Hz Power Source MCC 2-42A I
e 0
1 25 -
~.
l l'
I l
TABLE 8 Instrumentation and Controls Identi fication Description Functi on Location Type Input Range _ Output Range Setpoint t
SPC-HS-1A-01,02 Hand Switch On/Of f control for SPC-P-1A SPC-Panel 1 Tm Pushbuttons N/A N/A N/A SPC-HS-1A-03,04 Hand Switch On/Off control for SPC-P-1A SPC-Panel 3 Two Putbuttons N/A N/A N/A I
SPC-HS-18-01,02 Hand Switch On/Off control for SPC-P-1B SPC-Panel 1 Two Pumbuttons N/A N/A N/A l
SPC-HS-15-03,04 Hand Switch On/Off control for SPC-P-18 SPC-Panel 3 Two Puebuttons N/A N/A N/A J
SPC-HS-3-01,02 Hand Switch On/Off control for SPC-P-3 SPC-Panel 1 Two Pushbuttons N/A N/A N/A 1
}
SPC-HS-3-03,04 Hand Switch On/Off control for SPC-P-3 SPC-Panel 3 Tm Pushbuttons N/A N/A N/A SPC-PI-1A Pressure Indicator Indicates SPC-P-1 A discharge pressure Lccal Bourdon 0-1000 psig 0-1000 psig N/A 1
j SPC-PI-18 Pressure Indicator Indicates SPC-P-1B discharge pressure Local Bourdon 0-1000 psig 0-1000 psig N/A SPC-PI-1C Pressure Indicator Indicates SPC-P-3 discharge pressure Local Bourdon 0-1000 psig 0-1000 psig N/A SPC-PIT-1 Pressure Indicator Indicates charging pisaps suction Local Bellows 0 to 30 psig 10 to 50 made N/A Transmi tter pressure 8 transmits signal to SPC-PI-1 i
j SPC-P!-1 Pressure Indicator Indicates darging ptssp's Suction SPC-Panel 1 M1111assmeter 10 to 50 made O to 30 psig N/A pressure s
j SPC-MS-1 Hand Swit$
Select SPC-P-1A or 18 as the lead SPC-Panel 3 Selector N/A N/A N/A j
charging pissp SPC-LIT-1A
, Level Indicator Level Indication of SPC-T-1, and input Local Twin Diaphrege ' 0 to 111 10 to 50 made N/A I
Transmitter to SPC-LI-1A in. W 0-100%
SPC-LI-1A Level Indicator Indicates SPC-T-1 level SPC-Panel 3 M1111ausseter 10-50 made 0-100%
N/A SPC-LIT-1B Level Indicator Level Indication of SPC-T-1 and input Local Twin Diaphrays 0 to 111 10 to 50 made N/A Transmi tter to SPC-LI-1B i n. E 0-1005 s -
,w
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. T ' v.
s 3
TABLE 8 (Cont'd) l
(
Instrumentation and Control s Identi fication Description Function Location Type input Range Output Range Setpoint SPC-LI-1B Level Indicator Indicates SPC-T-1 level SPC-Panel 3 M1111ameter 10-50 made 0-100%
N/A SPC-LSL-1B Level Switch Actuates alams SPC-LAL-1B-1 and IB-2, SPC-Panel 1 Solid state 10-50 made N/A 21%
and shuts SPC-V71 SPC-LE-1C Level Element Provides SPC-T-1 low level input to Local Electrode N/A N/A 23 in.
SPC-LSL-lC SPC-LSL-1C Level Switch Actuates alams SPC-LAL-1C181C2 on SPC-Panel 1 Induction Relay N/A N/A N/A low level in SPC-T-1 & closes SPC-V71 SPC-LIT-2A Level Indicator Level indication of SPC-T-2 and input Local Twin Diaphragm 0-111 in.W 10 to 50 made N/A Transmitter to SPC-LI-2A 0-100%
SPC-LI-2A Level Indicator Indicates SPC-T-2 level SPC-Panel 3 M1111ameter 10 to 50 made 0-100%
SPC-LIT-2B Level Indicator Level Indication of SPC-T-2 Local Twin 01aphragm 0-111 in.W 10 to 50 made N/A Transmitter 0-1005 SPC-LI-28 Level Indicator Indicates SPC-T-2 level SPC-Panel 3 M1111ameter 10 to 50 made 0-1001 N/A f
SPC-LIT-3A Level Indicator Level Indication of SPC-T-3 and input Local Twin Otaphragm 0 to 111 10 to 50 made N/A Transmitter to SPC-LIC, L1, LSHH, LSH, LSLL, 8 i n. W 0-1005 LSL-3A SPC-LIC-3A Level Indicator Provide proportional control signal to SPC-Panel 3 Pal Controller 10 to 50 made 10-50 made Yariable j
Controller SPC-P-3 0-100%
SPC-LI-3A Level Indicator Level Indication of SPC-T-3 SPC-Panel 3 M1111ameter 10 to 50 made 0-1001 N/A SPC-LSL-3A Low Level Switch-Starts SPC-P-1A (1 f lead pump) and SPC-Panel 1 Solid State 10 to 50 made N/A 62%
SPC-P3 on low level in SPC-T-3 SPC-LSH-3A Hi@ Level Switch Stops SPC-P-1 A on high level in SPC-Panel 1 Solid State 10 to 50 made N/A 74%
SPC-T-3. Cycles SPC-P-3
f i
TABLE 8 (Cont'd) 1 f
Instrumentation and Controls
}'
4 f
Identification Description Function Location Type Input Range putput Range Setpoint SPC-LN-4,38 2 Pen Strip Chart Provide record of levels in SPC-T-3 SPC-Panel 3 Esterline Angus 10 to 50 made 0-1005 N/A Recorder and SPC-T-4 i
SPC-LSLL-3A Low-Low Level Starts SPC-P-1A (if backup pump) on SPC-Panel 1 Foxboro 10 to 50 made N/A 571 Switch low-low level in SPC-T-3, and actuates alams SPC-LAL-3Al 8 3A2 SPC LSHH-3A High High level Actuates alam SPC-LAHH-3Al 8 3A2 on SPC-Panel 1 Solid State 10 to 50 made N/A 781 i
j Swi tch hi@ high level in SPC-T-3 f
I SPC-LIT-38 Level Indicator Level Indication of SPC-T-3 and input Local Twin Diaphragm 0 to 111 10 to 50 made N/A Transmi tter to SPC-LI, LSHH, LSH, LSLL 8 LSL-3B i n. WG 0-1005 SPC-LI-38 Level Indicator Level Indication of SPC-T-3 SPC-Panel 3 Millfasmeter 10 to 50 made 0-1001 N/A r
k SPC-LSL-38 Low Level Swttch Starts SPC-P-1B (1f lead pinp) on low SPC-Panel 1 Solid State 10 to 50 made N/A 621 level in SPC-T-3 SPC-LSH-38 Hi@ Level Switch Stops SPC-P-1B on high level in SPC-T-3 SPC-Panel 1 Solid State 10 to 50 made N/A 741 i
g SPC-LSLL-38 Low-Low Level Starts SPC-P-18 (if backup ptmp) on SPC-Panel 1 Foxboro 10 to 50 made N/A 575 li Switch low-low level in SPC-T3. and actuates alams SPC-LAL-381 8 382 l
$PC-l.SHH-38
.Hi@ H1$ Level Actuates alarm SPC-LAHH-3818 382 on SPC-Panel 1 Solid State 10 to 50 made N/A 781 Swt tch high hi@ 1evel in SPC-T-3
'1 SPC-HS-3-1/2 Hand Switch Start /stop control for SPC-P-3 SPC-Panel 1 Tio Pushbuttons N/A N/A N/A
).
SPC-HS-3-3/4 Hand Switch Start /stop control for SPC-P-3 SPC-Panel 3 Two Pushbuttons N/A N/A N/A i
SPC-LIT-4 Level Indicating Level Indication for SPC-T-4 and input Local Twin Diaphragm 0-139" 10 to 50 made N/A Transmi tter to SPC-LI-4, LSHL-4, and LSLL-4A i
h SPC-LI-4 Level Indicator Level Indication for SPC-T-4 SPC-Panel 3 Milliansneter 10 to 50 made 0-1005 N/A e
e i -.
T I'
I I
.I i
f:
TABLE 8 (Cont' d) jj Instrumentation and Controls Identi fication Description Function Location Type Input Range Output Range Setpoint j<
i SPC-LSHL-4 Level Switch SPC-T-4 low level heater shut off and SPC-Panel-1 Solid State 10 to 50 made N/A 965 Inc.
375 dec.
l j
High Low high low level alarms SPC-LSLL-4A low Low Level Stops ptsups SPC-P-1 A 8 3 on SPC-T-4 SPC-Panel-1 Solid State 10 to 50 made N/A 35 Switch low level SPC-LSLL-45 Low Low Level Stops ptsup SPC-P-1B on SPC-T-4 low Local Di aphrspi 2.5 to 45' WG N/A 24' IE Switch level SPC-TE-4 Temperature Measures temp. of water in SPC-T-4 for Local Dual T/C 0 to 300*F MYDC N/A j
Element input to SPC-TIC-4-1 and TY-4 SPC-TIC-4-1 Temperature Controls heater for SPC-T-4 SPC-Panel 1 On/Off MYDC N/A 160*F l
Indicator Controller
}
SPC-TI-4-2 Tegerature Indicates SPC-T-4 tegerature SPC-Panel 3 Millf assecter 10 to 50 made 0-300*F N/A Indicator k
SPC-TSH-4 High Temperature
$1gnal for SPC-T-4 Hi@ temp. alana SPC-Panel 1 Solid State 10 to 50 made N/A 170*F i'
$ witch TAHL-4 SPC-TSL-4 Low Temperature Signal for SPC-T-4 low terp. alana SPC-Panel 1 Solid State 10 to 50 made N/A 150*F Swi tch TAHL-4 t
SPC-TT-4 Converter Converts SPC-T-4 temperature signal for SPC-Panel 1 E/I MYDC 10 to 50 made N/A l
input to SPC-TI-4-2. TSH-4 and TSL-4 I
SPC-HS-4 Hand.Swi tch On/Off control for Heater for SPC-T-4 SPC-Panel 1 2 Position N/A N/A N/A 3
(Maintained)
I with Indicating lights SPC-FE-5 Flow Element Develops differential press. for charg-Local Ori fice O to 100 GPM 0-312.5'WG N/A ing ptmps Discharge Flow Measurement for input to SPC-FIT-5 i
s - -
j TABLE 8 (Cont'd)
Instrumentation and Controls Identification Description Function Location Type Input Range Output Range Setpoint
,1 l
SPC-FIT-5 Flow Indicating Indicates charging pissps Discharge Flow Local Twin Diaphragm 0-312.5'WG 10-50made N/A Transmitter
& Transmits Signal to SPC-FY-5 0-1005 l
SPC-FY-5 Flow Converter Converts flow signal for input to SPC-Panel 1 Square Root 10 to 50 made 10 to 50 made N/A f
SPC-FI-5 j
l SPC-FI-5 Flow Indicator Indicates charging pumps Discharge Flow SPC-Panel 3 M1111 ammeter 10 to 50 made 0 to 100 GPM N/A
.i 2 Position N/A N/A N/A SPC-HS-6 Hand Switdi On/Off control for SPC-T-5 Mixer SPC-Panel 2 (Maintai nec) with Indicating 11 Wits i,
I SPC-HS-7 Hand Switch On/Off c0r. trol for SPC-T-5 heater SPC-Panel 2 2 Position N/A N/A N/A i
j (Maintai ned) with Indicating c
lights
+
2 SPC-HS-8 Hand Switch On/Off control for SPC-P-2 SPC-Panel 2 2 Position N/A N/A N/A
'l t
(Maintained) with Indicating lights SPC-TI-9 Temperature Indicates temp. of mixture in SPC-T-5 Local Every Angle O to 200*F 0 to 200*F N/A Indicator SPC-PIT-10 Pressure Indication Provides Indication of standby R.C.
Local Bellows 0 to 1000 10 to 50 MA N/A Trinsmitter Press. Cont. SYS. pressure 8 signal to psig 0-100%
SPC-DPS-10A 8 B. PI-10-1 8 2 and
{
DPI-10 SPC-DPY-10 Converter Convert SPC-PIT-10 8 PY-15 signals into SPC-Panel 1 Sisuning 10-50 made 10-50 made N/A
{
SPC/RC differential pressure signal to Amplifier 10-50 made SPC-DPI-10 s
I 5
6 TABLE 8 (Cont'd)
Instrumentatton and Controls Identi fication Description Fanctfon Location Type Input Range Output Range Setpoint i
SPC-DPI-10 Di fferential Indicate SPC/RC differential pressure SPC-Panel 3 Milliameter 10-50 made 100-0-100 psid N/A Pressure Indicator SPC-PI-10-1 Pressure Indicator Indicates SPC system pressure SPC-Panel 1 Milliansneter 10-50 madC 0-1000 psig N/A i
SPC-PI-10-2 Pressure Indicator Indicates SPC system pressure SPC-Panel 3 Mil 11apeneter 10-50 made 0-1000 psig N/A 1
Pressure Switch SPC-DPA-10A-182
--+ 25 psid SPC-DPS-10A Di fferential SPC/RC pressure difference alam to SPC-Panel 1 Solid State 10-50 made N/A SPC-DPS-105 Differential SPC pressure /setpoint difference SPC-Panel 1 Solid State 10-50 inade P/A
-+ 25 pstd Pressure Switch alann to SPC-DPA-10B-182 SPC-PI-11 Pressure Indicator Indicates SPC nitrogen pressure local Bourdon Tube 0-500 psig 0-500 psig N/A I
SPC-PS-11 Pressure Switch Actuates SPC low nitrogen alam SPC-Local Diaphragm 50-375 psig N/A 225 psig g
PAL-11-182 SPC-FE-12 Flow Element Develops D/P for variable charging Local Orifice 0-15 gpm 0-100'WG N/A
. a pupp SPC-P-3 flow, and provides input to SPC-FIT-12
{
j SPC-FIT-12 Flow Indicating Indicates Variable Charging Ptsup Local Twin Diaphragm 0-100*WG 10-50 made N/A Transmitter Disch. Flow & Transmits Signals to SPC-FY-12 a
SPC-FY-12 Flow Converter Convert flow signal for input to SPC-Panel 1 Square Root 10-50 made 10-50 made N/A SPC-FI-12 SPC-FI-12 Flow Indicator Indicates Yariable Charging Pisap SPC-Panel 3 Milliaseseter 10-50 made 0-100 GPM N/A Discharge Flow
.s N
a SPC-PI-13 Pressure Indicator Indicates Borated Water Transfer Ptsup Local Bourdon Tube 0-30 psig 0-30 pstg N/A
[
SPC-P-2 Discharge Pressure 1
1
.s 1 ad
e TABLE 8 (Cont'd)
Instrtmentation and Controls
)
.4 Identi ff cation Description Function Location Type Input Range Output Range Setpoint SPC-PI-14 Pressure Indicator Indicates nitrogen pressure to SPC-T-3 Local Bourdon Tube 0-500 psig 0-500 pstg N/A SPC-PIT-14 Pressure Indicator Pmvf de nitrogen relief pressure Local Bellows 0-500 psig 10-50 made N/A Transmi tter control signal to SPC-PIC-14-1 SPC-PIC-14-1 Pressure Indicator Provide setpoint control sf gnal to SPC-Panel 3 Pat Controller 10-50 made 10-50 made Variable i
Controller SPC-PY-14 for nitrogen pressure 1
M SPC-PY-14 Pressure Converter Convert setpoint signal to air SPC-PCV-14 I/P Converter 10-50 made 3-15 psig N/A
'i pressure control of SPC-PCV-14 s1 SPC-FE-15 Flow Element Develops Differential Press. for Local Ori fice 0-2 x 105 0 462"WG N/A hs Nitrogen Supply Header Flow Monttor SCFH
.m and provides input to SPC-FSH-15 1.. t l
SPC-FSH-15 Flow Swltch Actuates hipi nitrogen flow alams Local Bellows 0-10*W 0-10*WG 4.18"WG
$PC-FAH-15-182, and indicates D/P (20,000 SCFM)
SPC-PT-15 Pressure Provide RC pressure signal input from local Bellows 0-1000 psig 10-50 made N/A Transmi tter DH-V3 to SPC-PY-15 SPC-PY-15 Repeater Transmit RC pressure signal to SPC-Panel 1 Current Repeater 10-50 made 10-50 made N/A SPC-PI-15-1, 15-2 & 15-3, DPI-10,
.. J.
DPS-10A, & PR-22 h
SPC-PI-15-1 Pressure Indicator Indicates RC pressure at DH-Y3 SPC-Panel 1 Milliansneter 10-50 made 0-1000 psig N/A
/
SPC-PI-15-2 Pressure Indicator Indicates RC pressure at DH-Y3 SPC-Panel 3 M1111anuneter 10-50 made 0-500 psig N/A
$PC-PI-15-3 Pressure Indicator Indicates RC pressure at DH-Y3 SPC-Panel 3 Digital 10 C0 made 0-500 psig -
N/A fi SPC-PIT-16 Pressure Indicator Provide nitrogen pressure signal to Local Bellows 0-500 psig 10-50 made N/A l
Transmitter SPC-PIC-16 for pressure regulation 0-100%
i
l i
TABLE 8 (Cont'd) f Instrtseentation and Controls
~~
i Identi fication Description Function Location Type Input Range Output Range Setpoint
!N SPC-PIC-16 Pressure Indicator Provide setpoint signal to SPC-PY-16-1 SPC-Panel 3 Pal Controller 10-50 made 10-50 made Variable 1-5 VDC Controller and HS-18
.{
l SPC-PT-16-1 Pressure Converter Convert setpoint signal to air local I/P Converter 10-50 made 3-15 psig Yariable l },
pressure control of SPC-PRV-28 SPC-PT-16-2 Pressure Converter Convert nitrogen pressure setpoint SPC-Panel 1 v/I Converter 1-5 YDC 10-50 made N/A l
"x signal to input to SPC-DPS-10B SPC-PIT-17 Pressi.re Indicator Provide nitrogen pressure signal to Local Bellows 0-500 psig 10-50 made N/A z
Transmi tter SPC-PIC-17 for pressure regulation SPC-PIC-17 Pressure Indicator Provide setpoint signal to SPC-PY-17 SPC-Panel 3 Pa! Controller 10-50 made 10-50 made 3
Controller and HS-18 1-5 VDC SPC-PT-17 Pressure Converter Convert setpoint signal to air locat I/P Converter 10-50 made 3-15 psig N/A -
J pressure control of SPC-PRY-2A SPC-HS-18 Hand Switch Select SPC-PIC-16 or 17 to select SPC-Panel 3 Two Position N/A N/A N/A system pressure setpoint input to (Maintained)
SPC-DPS-10B SPC-P!-18 Pressure Indicator Provide RC pressure indication 1.ocal Bourdon Tube 0-1000 psig 0-1000 psig N/A from DH-V3 SPC-PI-21 Pressure Indicator Indicate RC pressure from temporary Local Bourdon Tube 0-1000 psig 0-1000 psig N/A nuclear samp11pg (SNS) system e.f yi SPC-PT-22 Pressure Provide RC pressure signal from SMS Local Bellows 0-1000 psig 10-50 made N/A Transmitter system to SPC-PI-22-182, and PR-22 SPC-PI-22-1 Pressure Indicator Indicate RC pressure from SNS system SPC-Panel 1 M1111asseeter 10-50 made 0-1000 psig N/A J
i SPC-PI-22-2 Pressure Indicator Indicate RC pressure from SMS systen SPC-Panel 3 Milliansmeter 10-50 made 0-1000 psig N/A 5
%" M
i
{
u
,h
,J i
i TABLE 8 (Cont'd)
J Instrtsnentation and Control 5
[
Identi fication Description Function Location Type Input Range Output Range Setpoint b
B.
SPC-PR-22/
Pressure Recorder Record RC pressure at SNS system and SPC-Panel 3 Strip Chart 10-50 madc/ 0-1000 psig/
N/A i
I SPC-PR-15 DH-V3 0-50 made 0-500 psig SPC-PI-23 Pressure Indicator Indicate RC pressure at SNS system local Bourdon Tube Later Later N/A SPC-PI-28 Pressure Indicator Indicates N2 pressure downstream of Local Bourdon Tube 0-300 psig 0-300 psig N/A f
SPC-PRV-4 5
SPC-PI-29 Pressure Indicator Indicates N2 pressure to SPC-T-4 Local Bourdon Tube 0-5 psig 0-5 psig N/A SPC-FI-30 Flow Indicator Indicate SPC-T-4 vent 1tne flow rate Local Rotameter 0-28 SCf14 0-1001 N/A SPC-HS-17-1 Hand Switch Control SPC surge tank SPC-T-1 outlet SPC-Panel 1 3-posi tion N/A N/A N/A valve SPC-V71 spring return SPC-HS-71-2 Hand Switch Control SPC surge tank SPC-T-1 outlet SPC-Panel 3 3-posi tion N/A N/A N/A h
valve SPC-V71 spring return
(
SPC-ZS-71 Limit Switch Actuate alarms SPC-ZA-71-182 on SPC-V71 Limit Switch N/A N/A N/A
{
[]
SPC-Y71 abnormal position Y
SPC-TI-101 Temperature Indicates N2 "B" header flask Local Thennameter 0-200*F 0-200*F N/A
~
Indicator temperature SPC-TI-102 Tegerature Indicates N2 "B" header flask Local Thermometer 0-200*F 0-200*F N/A Indicator teg erature SPC-TI-103 Tegerature Indicates N2 "A" header flask local Therwometer 0-200*F 0-200'F N/A i
Indicator temperature
(
SPC-TI-104 Temperature Indicates N2 "A" header flask Local Thermometer 0-200*F 0-200*F N/A efl Indicator temperature SPC-PI-105 Pressure Indicator Indicates N2 "B" header pressure local Bourdon Tube 0-5000 psig 0-5000 psig N/A t -
r i-6 e
s TABLE 8 (Cont'd)
Instrumentatton and Controls j
Identi ficatt on Descrf ption Function Locatt on Type Input Range Output Range Setpoint SPC-PI-106 Pressure Indicator Indicates N2 "B" header pressure Local Bourdon Tube 0-5000 psig 0-5000 psig N/A SPC-PI-107 Pressure Indicator Indicates N2 'A' header pressure Local Capillary Tube 0-500 psig 0-500 psig N/A I
SPC-PI-106 Pressure Indicator Indicates N2 "A" header pressure Local Capillary Tube 0-500 psig 0-500 psig N/A
'j j
SPC-PI-109 Pressure Indicator Indicates SPC-PRV-3D set pressure Local Bourdon Tube 0-1000 psig 0-1000 psig N/A
{
-J SPC-P!-110 Pressure Indicator Indicates SPC-PRV-3C set pressure Local Bourdon Tube 0-1000 psig 0-1000 psig N/A l
SPC-PI-111 Pressure Indicator Indicates SPC-PRY-38 set pressure Local Bourdon Tube 0-1000 psig 0-1000 psig N/A SPC-PI-112 Pressure Indicator Indicates SPC-PRY-3A set pressure Local Bourdon Tube 0-1000 psig 0-1000 psig N/A 1
SPC-PI-113 Pressure Indicator Indicates N2 pressure to GPC-T-3 Local Bourdon Tube 0-1000 psf g 0-1000 psig N/A SPC-PI-114 Pressure Indicator Indicates N2 pressure to SPC-T-3 Local Bourdon Tube 0-500 psig 0-500 psig N/A SPC-PI-214 Pressure Indicator Indicates SPC-PRY-1 set pressure SPC-PCY-14, Bourdon Tube 0-200 psig 0-200 psig N/A 3
SPC-PI-26 Pressure Indicator Indicates Packing Coolant pressure local Bourdon Tube 0-30 psig 0-30 psig N/A 4
from PUMP-1B I
l SPC-PI-25 Pressure Indicator Pecking Coolant Disch. pressure from local Bourdon Tube 0-30 psig 0-30 psig N/A j
from PLMP-1A i!
'j SPC-PSL-27 Pressure Switch Actuates low packing coolant pressure Local Later Later Later Later
,3 for PLMP-1A
'N SPC-PSL-28 Pressure Swttch Actuates low packing coolant pressure Local later Later later Later I
for PLMP-1B 1
i SPC-HS-1A-5 Hand Switch Close/Open overide switch for SPC-1A SPC-PNL-3 Selector N/A N/A N/A control circuit 2f ch actuates alars on SPC-PNL-3 Q
4 3 -
s
t 1j 1
TABLE 8 (Cont'd)
}
Instrumentatton and Controls 1
Identi fication Description Function Locatton Type Input Range Output Range Setpoint i
SPC-HS-19-5 Hand Switch Close/Open overide swltch for SPC-1B SPC-PNL-3 Selector N/A N/A N/A
(
control circuit sich actuates alam on SPC-PNL-3 SPC-HS-3-5 Hand Switch Close/Open overf de switch for SPC-P-3 SPC-PNL-3 Selector N/A N/A N/A control circuit 41ch controls alann I
on SPC-PNL-3 1 [
] 1;
!k 1 -1 I
y Ii I
.(
3 e
f J
l O
i -
TABLE 9 Panel Moun2ed Annunciators and Computer Inputs Panel Mounted Ar.nunciators Alam Variable Identi fication Measured Variable, Units High Low Source Range Panel SPC-LAL-1B1 SPC-T-1 low level, %
N/A 21%
SPC-LSL-1B 0-100%
SPC-1 SPC-LAL-182 SPC-T-1 low level, %
N/A 21%
SPC-LSL-1B 0-100%
SPC-3 SPC-LAL-1C1 SPC-T-1 low level, %
N/A 21%
SPC-LSL-1C 0-100%
SPC-1 SPC-LAL-1C2 SPC-T-1 low level, %
N/A 21%
SPC-LSL-1C 0-100%
SPC-3 SPC-LALH-3Al SPC-T-3, hi/ low level, %
82%
35%
SPC-LSHH-3A 0-100%
SPC-1 f
SPC-LALH-3A2 SPC-T-3, hi/ low level, %
82%
35%
SPC-LSHH-3A 0-100%
SPC-3 I
SPC-LALH-3B1 SPC-T-3, hi/ low level, %
82%
35%
SPC-LSLL-3B 0-100%
SPC-1 SPC-LALH-382 SPC-T-3, hi/ low level, %
82%
35%
SPC-LSLL-3B 0-100%
SPC-3 j
SPC-LALL-3Al SPC-T-3, low level, %
N/A 35%
SPC-LSLL-3A 0-100%
SPC-1 SPC-LALL-3A2 SPC-T-3, low level, %
N/A 35%
SPC-LSLL-3A 0-100%
SPC-3 SPC-LALL-3B1 SPC-T-3, low level, %
N/A 35%
SPC-LSLL-3B 0-100%
SPC-1 SPC-LALL-382 SPC-T-3, low level, %
N/A 35%
SPC-LSLL-3B 0-100%
SPC-3 SPC-TAHL-4-1 SPC-T-4 hi/ low temperature, "F 170 150 SPC-TSL-4 0-300%
SPC-1 SPC-TAHL-4-2 SPC-T-4 hi/ low temperature, 'F 170 150 SPC-TSL-4 0-300%
SPC-3 SPC-LAL-4-1 SPC-T-4 low level, %
N/A 37%
SPC-L5HL-4 0-100%
SPC-1 SPC-LAL-4-2 SPC'-T-4 low level, %
N/A 37%
SPC-LSHL-4 0-?00%
SPC-3 SPC-LAH-4-1 SPC-T-4 hi level, %
96%
N/A SPC-LSHL-4 0-100%
SPC-1. - -
TABLE 9 (Cont'd)
Parei Mounted Annunciators and Computer Inputs I
Panel Mounted Annunciators Alarm Variable l
Identi fication Measured Variable, Units High Low Source Range Panel SPC-LAH-4-2 SPC-T-4 hi level, %
96%
N/A SPC-LSHL-4 0-100%
SPC-3 SPC-DPAH-10A-1 SPC/RC differential pressure, psid +25
-25 SPC-DPS-10A
+1000 psid SPC-1 SPC-DPAH-10A-2 SPC/RC differential pressure, psid +25
-25 SPC-DPS-10A
+1000 psid SPC-3 SPC-DPAH-10B-1 SPC pressure /setpoint
+25
-25 SPC-DPS-10B
+1000 psid SPC-1 i
differential pressure, psid SPC-DPAH-108-2 SPC pressure /setpoint
+25
-25 SPC-DPS-10B
+1000 psid SPC-3 differential pressure, psid j
SPC-PAL-11-1 Low SPC nitrogen pressure, psig N/A 225 SPC-PS-11 0-500 psig SPC-1 SPC-PAL-11-2 Low SPC nitrogen pressure, psig N/A 225 SPC-PS-11 0-500 psig SPC-3 SPC-ZA-71-1 SPC-V71 valve position N/A N/A SPC-ZS-71 N/A SPC-1 SPC-ZA-71-2 SPC-V71 valve position N/A N/A SPC-ZS-71 N/A SPC-3 SPC-FAH-15-1 High nitrogen flow 20,000 N/A SPC-FSH-15 0-10"WG SPC-1 SCFH 4
SPC-FAH-15-2 High nitrogen flow 20,000 N/A SPC-FSH-15 0-10"WG SPC-3 SCFH SPC-PAL-27 Low pressure P-1A packing coolant N/A (later)
SPC-PSL-27 (Later)
SPC-3 SPC-PAL-28 Low pressure P-1B packing coolant N/A (later)
SPC-PSL-28 (Later)
SPC-3 Computer Inputs None