25_20_14_System_Functional_Requirements_Add1.doc

INFRASTRUCTURE IMPROVEMENTS FOR THE

SOUTH BAY INTERNATIONAL WASTEWATER TREATMENT PLANT

San Diego County, California

SPECIFICATION 25 20 14

SYSTEM FUNCTIONAL REQUIREMENTS

PART 1 - GENERAL

1.1

RELATED DOCUMENTS, CONTRACT CLAUSES, AND SPECIFICATIONS

The following may not include all related documents, contract clauses, and technical specifications, and does not relieve the Contractor of the responsibility of performing work associated with this specification in accordance with all terms of the Contract herein.

A.

Contract: Section I “Specifications and Drawings for Construction”

B.

Other Specifications. Related work specified within the Contract that shall apply to all equipment, materials, labor and services furnished under this Specification shall include, but not be limited to, the following:

· SPECIFICATION 01 33 00, Submittal Requirements

· SPECIFICATION 01 75 01, Starting and Placing Equipment in Operation

· SPECIFICATION 01 75 02, Field Tests of Equipment

· SPECIFICATION 01 78 36, Warranty

· SPECIFICATION 01 78 23, Operation and Maintenance Data

1.2

DESCRIPTION

A.

This section describes the functional requirements of all instrumentation, control, and monitoring systems and processes.

B.

The following system descriptions are provided to assist the I&C Subcontractor in assembling necessary sensors, control devices, monitoring devices and telemetry to provide a complete and operable system. The Contractor shall be required to produce elementary diagrams to depict the functions, controls, and interlocks described in the Loop Descriptions. The descriptions are by no means entirely complete. Therefore, if it is found during the course of the contract that individual items of equipment, by virtue of characteristics specific to their design, require sensors, devices or connections not specifically noted in these documents, these features shall be provided at no additional cost to the GOVERNMENT.

C.

A functional description covering instrumentation and control systems is provided to give the Contractor and I&C Subcontractor an understanding of the system function and to aid him in the checkout of the installation. The Contractor shall not use the functional description as a basis for providing a system having equipment of lesser quality or fewer component parts than specified herein or shown on the Contract Drawings. The Contractor shall not assume that the functional description attempts to set forth a complete system.

D. To ensure that all control systems and equipment are properly coordinated and will function in accordance with the requirements of the Contract Documents, the Contractor shall engage the services of a qualified I&C Subcontractor in whom shall be vested unit responsibility for the proper function of the complete system. However, the Contractor shall retain ultimate responsibility under this Contract for system control and equipment coordination, installation, operation and guarantee, and the Contractor shall furnish and install all labor, equipment, materials, appurtenances, specialty items and services not provided by the I&C Subcontractor but required for complete and operable control systems. The control equipment covered by this specification is intended to be standard equipment of proven ability as manufactured by reputable concerns having extensive experience in the production of such equipment. The control equipment furnished shall be manufactured and installed in accordance with the best practice and methods, and shall operate satisfactorily when installed as shown and specified in the Contract Documents.

E. Loop descriptions, devices/instruments shown on drawings and component list shown at the end of this section are that is the most redundant, inclusive and reliable shall be provided at no additional cost to the Government. In case of a discrepancy between these documents, see paragraph 1.4E of this section.

F.

The Contractor, I&C Subcontractor, and manufacturers of the equipment specified herein shall be required to review and satisfy all relevant requirements of other sections of the Contract Documents, including Division 11, and the requirements of the Contract Drawings. The Contractor, manufacturers, suppliers, fabricators, and/or subcontractors furnishing and/or installing equipment, services, and specialties associated with this Specification shall fully coordinate their efforts to avoid potential claims that are based on failure to review relevant Contract Documents, including the Contract Drawings.

1.3

SYSTEM - OVERALL

A.

The project is for system improvements to the Secondary Treatment Plant portions of the South Bay International Wastewater Treatment Plant.

B.

The additional infrastructure and processes to be installed as part of these improvements need to have similar monitoring, control and communication infrastructure connected and merged into the existing SCADA control center in the O&M building [i.e., Sensors, Human Machine Interfaces (HMI’s), Remote Terminal Units (RTU’s) and Programmable logic controllers (PLC’s)] similar to those that currently exist throughout the SBIWTP. The Contractor shall use the latest software that is used at the plant to make all the modifications.

1.4

FUNCTIONAL REQUIREMENTS

A.

General: The system shall provide all of the functions described hereinafter for each loop. Major equipment items are specified for each loop. However, the Contractor shall provide all items of equipment, whether indicated, specified or not, that are necessary to effect the required loop performance at no additional cost to the GOVERNMENT. If a component is not listed under the "COMPONENTS" heading or in the section titled "COMPONENT SPECIFICATIONS," or in “COMPONENTS SCHEDULE” at the end of this section, but is required to make the control loop function as specified, the Contractor shall provide that component at no additional cost to the GOVERNMENT.

Display and control loops are shown in process and instrumentation diagrams (P&ID) form in accordance with the Instrument Society of America (ISA) standard S5.1 except as modified by the contract documents.

B.

Format: Each loop specification is written with subheadings: FUNCTIONS and COMPONENTS. Components for the corresponding LOOP number are listed in the “COMPONENTS SCHEDULE” at the end of this section.

The FUNCTIONS subheading specifies the functional performance of the loop and includes an abstract of the functions of any interlocks to be provided by the Contractor's I&C Subcontractor. The precise definition of the interlock function is described in the Loop Description. The elementary diagrams prepared by the Contractor's I&C Subcontractor shall show the interlock and identify the associated equipment.

The COMPONENTS subheading specifies the major components to be provided for the loop. Each component is identified by several pieces of information. The left hand column specifies the tag number, and this is followed by the component alpha-numeric identification code, the location of the component, a short description of the component and the type of I/O.

C.

Tag Numbers: A shorthand notation has been used on the P&IDs and in the loop descriptions to identify process areas, loops, and components. The plant process areas for the South Bay International for the Secondary Treatment Plant modifications as defined in these Contract Documents, have been assigned loop numbers as follows in.

SBIWTP AREA

DEDICATED LOOP

NUMBERS

Secondary Sedimentation (SST) Area 1000 to 1299

Equalization Tanks 5100 to 5199

Consider the following example:

Example:

Tag number: HS1301A (HOA)

NOTATION

EXPLANATION

HS

ISA designation - HAND SWITCH

(A physical device or a software selector button as specified)

Plant Area reference

Loop number

(A)

Letter designating individual unit (Hand Switch A, in this case)

(HOA)

Function Identifier - HAND-OFF-AUTO selector switch

D.

Component Identification CODE: The code is used to identify the applicable component specification for a specific application. See component code index in Specification titled "COMPONENT SPECIFICATIONS."

E.

Discrepancy: If a discrepancy exists between the written loop specifications under the FUNCTIONS heading and the components shown on the loop diagrams of the P&ID or called out under the COMPONENTS heading of the loop specifications, the written description takes precedence. However, if a component is shown on the loop diagram or called out under the COMPONENTS heading of the loop specifications and is not referenced in the written loop specification, but is required to provide proper operation of the system, the Contractor shall provide such components without additional costs. The Contractor shall immediately notify the COR of any such discrepancies.

F.

Set Points (Trip Point): A particular nomenclature has been used to define the action of discrete devices about their set points. When RISING is specified with a set point, it means that the contacts actuate for all process variable values above that point. Conversely, when FALLING is specified, it means that the contacts actuate for all process variable values below that point.

G.

All set points (trip points) noted in the loop specifications are for reference only, and shall be field adjusted during testing and start-up. All set points (trip points) shall be set using procedures as recommended by the manufacturer of the equipment being monitored and shall be field verified for proper system operation.

H. Signal Compatibility. Discrete signals from or to systems and components not provided under this Division shall be dry contact signals rated for 10 amps at 120 volts. The Contractor shall coordinate the discrete signal requirements with the I&C Subcontractor and the suppliers of the equipment providing the dry contact signals to ensure system compatibility.

I. SCADA Coordination: a system integrator provided by the I & C sub contractor shall consult with plant operator, IBWC coordinator and resident engineer to develop to access, operate and manage. Any modifications at the request of the IBWC shall be incorporated into SCADA interface.

PART 2 – Materials, Equipment, and/or Product See Specification entitled "COMPONENT SPECIFICATIONS" in each loop specification.

PART 3 – Construction or Execution Method, LOOP SPECS 3.3

LOOP 1000 SECONDARY SEDIMENTATION (SST) AREA -GENERAL INFORMATION

The Contractor’s bid for the Secondary Treatment Plant under the Contract Documents includes the complete construction of three additional (3) Secondary Sedimentation Tanks (SST-11, SST-12, SST-13) as shown on the Contract Drawings and as specified herein with provisions for future ultimate expansion to a total of eighty (80) Secondary Sedimentation Tanks. The SST's will be controlled via four (4) Local Control Centers and each will house the controls associated with 20 SST's and their associated facilities:

SST-LCC-1

(Existing) SST 1 through 10 (existing) SST 11 to 13 (part of this contract) and SST 14 to 20 (future)

SST-LCC-2

(Future not part of this contract) SST 21 through 40

SST-LCC-3

(Future not part of this contract) SST 41 through 60

SST-LCC-4

(Future not part of this contract) SST 61 through 80

SST-LCC-1 shall include space allocations future expansion of the PLC, and I/O provisions shall be provided for present requirements and future expansion of SST 14 through 20.

Note: Loops 1001-1002 shown for reference logic for new loops 1022-1027.

LOOP 1001

COMMON ALARMS

PLC-SST1 logic shall combine the alarm states from the following alarms FL-1001, FL-1003, FL-1005, FL-1007, FL-1009, FL-1011, FL-1013, FL-1015, FL-1016, FL-1017, YL-1017B, FL-1022,FL-1024 and FL-1026 in an either/or logic and shall transmit, via the PLC data highway, a common signal to alarm FL-1001 (LCP-SSK1 COMMON ALARM) located at the ADMIN-PCC.

LOOP 1001

SST ROTARY SKIMMER 1 (Existing for Reference)

FUNCTION

An automatic surface rotary skimmer is located at the influent of each secondary sedimentation tank.

The automatic skimmer drive for secondary sedimentation tank 1 shall be provided with a remote-off-local switch HS-1001A (ROL), a forward pushbutton HS-1001B, and a backward pushbutton HS-1001C at the skimmer location mounted on a steel channel pedestal as shown on Instrumentation Details Sheet 15A Detail I.

OFF position of HS-1001A (ROL) shall override all controls and shall be lockable.

In the LOCAL position of switch HS-1001A (ROL), the skimmer will be controlled by the forward pushbutton (HS-1001B) and the backward pushbutton (HS-1001C). The skimmer will move in the respective direction while the pushbutton is depressed.

In the REMOTE position of switch HS-1001A (ROL) the skimmer shall be controlled by discrete signals from PLC-SST1 as programmed by the secondary sedimentation tank skimmers program. Operator adjustable interval and duration timers in PLC-SST1 shall periodically cycle each skimmer pipe to tilt forward for a preset duration time and then backward for a preset duration time at preset time intervals. The skimmer shall tilt in sequence, forward and then backward, for the preset duration time, from skimmer 1 to skimmer 10, repeating the cycle at the next preset interval time. A discrete output signal from PLC-SST1 shall open motor operated flow valve FV-1001 when the skimmer begins to tilt forward to provide a flow of spray water. After the forward and backward cycle when the skimmer has returned to the upright position, the PLC signal shall cause motor operated flow valve FV-1001 to close, removing the spray water. If the remote-off-local switch HS-1001A (ROL) is in the OFF or LOCAL position, that skimmer shall be skipped in the sequence. If before the next skimming sequence interval, switch HS-1001A (ROL) is placed in the REMOTE position, that skimmer shall be returned to the skimming sequence.

Indicate status YL-1001 (SECONDARY SEDIMENTATION TANK SKIMMER DRIVE 1 AUTO) at panel LCP-SSK1 and provide an input to PLC-SST1 when HS-1001A is in REMOTE.

Refer to LOOP 1021 for "SKIMMING CYCLE ABORT" description.

Monitor the position of the skimmers with limit switches ZS-1001A (FORWARD), ZS-1001B (CENTER) and ZS-1001C (BACKWARD). Provide discrete input signals to the PLC to indicate skimmer position. If the skimmer fails to tilt or return upright (after a operator adjustable preset time of 60 seconds in the PLC) as called for by the skimming sequence program, or if an overload is detected, the PLC shall initiate alarm YA-1001 (SST SKIMMER DRIVE 1 FAILURE) at panel LCP-SST1. Alarm YA-1001 (SST SKIMMER DRIVE 1 FAILURE) shall be transmitted via the PLC data highway to PLC-ADMIN-PCC at panel ADMIN-PCC to initiate common alarm UA-1001 (LCP-SSK1 COMMON ALARM) at panel ADMIN-PCC.

The PLC shall receive discrete input signals from Skimmings Pump Station, LOOP 1143 on Skimmings Pump 1 RUN, LOOP 1144 on Skimmings Pump 2 RUN, LOOP 1140A skimmings wet well level HIGH, and LOOP 1141 on skimmings system in the SEPARATION cycle. Skimmer operation shall be inhibited when any one of these signals is present. When none of these signals are present, the inhibiting signal shall be released and the skimmers shall operate when the next timed cycle is called for.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1002

COMMON ALARMS

PLC-SST1 logic shall combine the alarm states from the following alarms FL-1002, FL-1004, FL-1006, FL-1008, FL-1010, FL-1012, FL-1014, FL-1016, FL-1018, FL-1020, FL-1023,FL-1025, FL-1027 in an either/or logic and shall transmit, via the PLC data highway, a common signal to alarm FL-1002 (LCP-SSC1 COMMON ALARM) located at the ADMIN-PCC.

LOOP 1002

SECONDARY SLUDGE COLLECTOR 1 (Existing for Reference)

FUNCTION

Mixed liquor from the activated sludge system will be delivered to the Secondary Sedimentation tanks (SST) via the influent channel on the south end of the tanks, to the selected in-service sedimentation tanks.

The sludge collector drive for secondary sedimentation tank 1, shall be provided with a remote-off-local switch, HS-1002A (ROL) and a forward/ (JOG) reverse selector switch, HS-1002B (FORWARD/REVERSE) at the drive location and an off-on selector switch HS-1002C (OFF/ON) at subpanel LCP-SSC1 (Local Control Panel - Secondary Sludge Collector 1).

When selector switch HS-1002A (ROL) is in the REMOTE position and selector switch HS-1002C (OO) is in the ON position, the drive shall run continuously. LOCAL position shall start the motor and spring return to OFF when released. OFF position shall override all controls and shall be lockable.

Monitor torque exerted on the tank drive shaft with shear pin SSL-1002. Provide a discrete signal to motor control center MCC-SST1 and to PLC-SST1 on shear pin breakage. On shear pin breakage and/or motor overload, the MCC shall output a discrete signal to PLC-SST1. PLC-SST1 shall initiate alarm FL-1002 (SST SLUDGE COLLECTOR DRIVE 1 FAILURE) at panel LCP-SST1.

The MCC-SST1 shall output a discrete signal to LCP-SSC1 on motor RUN which shall indicate status YL-1002 (SST COLLECTOR DRIVE 1 RUN) and shall provide an input to PLC-SST1.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1021

SECONDARY SEDIMENTATION TANK SKIMMING CYCLE ABORT

FUNCTION

Provide a pushbutton switch HS-1021A (SKIMMING CYCLE ABORT) on panel LCP-SST1. Depressing pushbutton switch HS-1021A (SKIMMING CYCLE ABORT) shall interrupt the PLC operated skimming sequence program and disable all of the skimmers operation. Indicate status YL-1021A (SKIMMING CYCLE ABORT) at panel LCP-SST1.

Provide a pushbutton switch HS-1021B (SKIMMING CYCLE RESET) on panel LCP-SST1. Provide discrete input signal from HS-1021B (SKIMMING CYCLE RESET) into PLC-SST1 when switch is depressed to reset the PLC operated skimming sequence program. Resetting the PLC operated skimming sequence shall enable the skimmers for operation when the next interval timed cycle is called for.

Indication light YL-1021B at panel LCP-SST1 will provide indication at the SST-LCC-1 when the secondary skimmings wetwell is inhibited. When none of these signals are present, the inhibiting signal shall be released and the skimmers shall operate when the next timed cycle is called for.

Upon loss of utility power and prior to the availability of standby power, PLC-SST1 shall halt the skimmings cycle program (similiar to the manual ABORT pushbutton command). To resume the skimming cycle program, the reset pushbutton at LCP-SST1 must be depressed. Refer to Loop 4203 for power loss sequence timing.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1022

SST ROTARY SKIMMER 11

FUNCTION

Secondary Sedimentation Tank Rotary Skimmer 11 shall FUNCTION same as Loop 1001.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1023

SECONDARY SLUDGE COLLECTOR 11

FUNCTION

Sludge Collector Drive 11 shall FUNCTION same as Loop 1002.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1023

SST ROTARY SKIMMER 12

FUNCTION

Secondary Sedimentation Tank Rotary Skimmer 12 shall FUNCTION same as Loop 1001.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1023

SECONDARY SLUDGE COLLECTOR 12

FUNCTION

Sludge Collector Drive 12 shall FUNCTION same as Loop 1002.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1024

SST ROTARY SKIMMER 13

FUNCTION

Secondary Sedimentation Tank Rotary Skimmer 13 shall FUNCTION same as Loop 1001.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1025

SECONDARY SLUDGE COLLECTOR 13

FUNCTION

Sludge Collector Drive 13 shall FUNCTION same as Loop 1002.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1185

RAS WITHDRAWAL FLOWMETERS

Each Secondary Sedimentation Tank (including new SST 11,12,13) shall have a 10" magnetic flowmeter to measure the withdrawal rate for each SST. Each flowmeter will have local indication, remotely mounted, of the flowrate being sent to the RAS/WAS Wetwell.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1186

RAS PUMPS SEAL WATER SUPPLY (DELETE THIS FUNCTION)

FUNCTION

A common seal water supply manifold shall serve RAS Pumps 1A, 1B, 1C, 1D, 1E, and 1F. It shall be equipped with a flow switch FSL-1186 and a pressure gauge PI-1186. Seal water flow switch FSL-1186 provides a discrete digital input to PLC indicating a no flow condition. PLC-SST1 logic shall compare the call to start any of the RAS pumps to the presence of seal water flow from FSL-1186. PLC-SST1 logic will prove this condition for a preset operator adjustable time duration and will provide a discrete digital output to activate alarm FAL-1186 (SEAL WATER FAILURE) at LCP-SST1. PLC logic will shutdown and lockout the RAS pumps, with PLC logic reset by actuating HS-1186 (RESET).

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1187

COMMON ALARMS

PLC logic shall combine the alarm states from the following alarms FAL-1186, FL-1188, FL-1189, FL-1190, FL-1191, FL-1192 and FL-1193 in an either/or logic and transmit, via the PLC TCP/IP, a common signal to alarm FL-1187 (LCP-RAS1 COMMON ALARM) located at the ADMIN-PCC.

LOOP 1187

RAS PUMP STATION 1 CONTROL

RAS will flow by gravity to the RAS/WAS wetwell located between SST's 8 and 9.

Six new submersible RAS pumps shall replace, three existing VFD driven and three existing constant speed vertical turbine pumps. NOTE RAS PUMP OPERATION SHALL REMAIN THE SAME AS FOLLOWS. The VFD driven and the constant speed RAS pumps shall be operated by means of a Lead\Lag\Standby rotation. RAS pumps (1A, 1B, 1C) shall be driven by variable frequency drives (VFD) and RAS pumps (1D,1E,1F) shall be constant speed.

A three-position, lead variable speed (VS) RAS pump selector switch HS-1187A and a three-position, lead constant speed (CS) selector switch HS-1187B shall be installed at the LCP-RAS1. The lead-lag status of the variable and constant speed pumps shall be determined by the setting of each respective switch. The variable speed and constant speed pump lead-lag-standby configurations are shown below:

If a selected VFD or Constant speed pump does not operate for any reason, the pump in standby mode shall be started by the PLC control logic after a software time delay, as a substitute.

Variable Speed Pump Lead-Lag-Standby Configuration:

VARIABLE SPEED PUMP SELECTOR SWITCH HS-1187A POSITION

Constant Speed Pump Lead-Lag Configuration:

CONSTANT-SPEED PUMP SELECTOR SWITCH HS-1187B POSITION

To meet design RAS flow requirements, PLC logic shall automatically vary and sequence two (2) variable speed and two (2) constant speed pumps to maintain a continuous RAS flow as set at an operator adjustable (25-100%) percent of total Activated Sludge Influent flows. PLC program shall receive the flow signal (FI-0629) representing AST Influent flow via the PLC TCP/IP from (existing OCW) PLC-PEB, and will adjust the selected RAS pumps VFD speed based on the following process conditions.

· 1,500-3,000 gpm – 1 VFD pump;

· 3,001-6,000 gpm – 2 VFD pumps (shared load);

· 6,001-9,000 gpm – 1 constant speed and 2 VFDs (shared load);

· 9,001-12,000 gpm – 2 constant speed and 2 VFDs (shared load); and

· 12,001-15,000 – 3 constant speed and 2 VFDs.

The PLC shall be configured to include process control algorithms for automatic control of the three VFD RAS pumps and the ON/OFF control of the three Constant speed RAS pumps.

Automatic mode shall give the PLC total control of all of the RAS pumps as described above, based on total AST Influent flow. This flow signal, FI-0629 shall be received as described above and a 4- 20 mA VDC signal shall be output from PLC and become the process variable input to FRC-1187, a Single Loop Digital Controller (SLDC) located on the front of LCP-RAS1. This will allow the operator to set and adjust how much RAS flow is sent to the Activated Sludge tanks. The output from FRC-1187 controller shall be a analog input signal, FR-1187, back to PLC. This signal shall establish the RAS flow ratio to be used in the master flow control loop configured within PLC program. Software PID algorithms will be programmed in PLC for each variable speed pump and will pass the 4-20 mA VDC signal directly to the selected VFD units. Adjustments, tuning parameters and placing the software PID algorithms in "AUTO" mode will be made from the panel operator interface device. The VFD drive units will send an analog input signal proportional to the speed of the RAS pump back to PLC for a process feedback signal to the software PID algorithm. If the flow conditions through the RAS Pump Station are high enough so that two variable speed pumps are both at 100% speed, the program in PLC will ramp both VS pumps back to 50% speed before starting the selected Constant Speed pump. Once the Constant Speed pump is up to speed, the two VS pumps will be varied to keep pace with the flow conditions as stated above. Operator adjustable software time-delays shall be incorporated into the PLC program to prevent nuisance starting and stopping of either VS or CS pumps if the flow conditions are close to the limits of starting another pump, or removing one from in-service.

A manual mode will be possible, though not the preferred mode of operation. In this mode of operation the HOA of the desired VS pump will be placed in the "HAND" position and the speed of the VFD can be manually adjusted at the VFD panel by the 10-turn potentiometer, to set the desired speed of the pump establishing the proper RAS flows. When this mode has been chosen, the PLC program will interrupt the PLC output to the VFD for the flow (Speed) pacing signal to the VFD panel, since the HOA is no longer in the "AUTO" mode.

Upon loss of utility power and prior to the availability of standby power, PLC shall disable operation of the RAS Pumps. While on standby power, PLC shall permit only four (4) pumps to operate. After the time delay, the pump designated as the Lead Variable Speed Pump shall be enabled to operate. After the time delay, the pump designated as the Lag Variable Speed Pump shall be enabled to operate. After the time delay, the pump designated as the Lead Constant Speed Pump shall be enabled to operate. After the time delay, the pump designated as the Lag Constant Speed Pump shall be enabled to operate. Once utility power is restored, after the time delay, the disabling interlocks shall be removed. Refer to Loop 4203 for power loss sequence timing.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1188

RAS VARIABLE SPEED (VS) PUMP 1A

FUNCTION

RAS Pump 1A shall be furnished with a locally-mounted REMOTE-OFF-LOCAL (ROL) switch HS-1188A. The "Remote" position shall arm controls located at the LCP-RAS1 and the pump. The "Off" position shall be lockable and shall prevent the RAS pump from operating, overriding all other controls. The "local" position shall be spring return to OFF position, and shall be used to test the operation of the RAS pump with HOA switch HS-1188B in the "Off" position.

RAS Pump 1A shall be provided with a HAND-OFF-AUTO (HOA) switch mounted at the LCP-RAS1. In the "Hand" mode RAS Pump 1A shall run continuously at the speed set at the VFD. In the "Off" mode the RAS pump shall only operate in the "local" mode at the ROL switch HS-1188A. In the "Auto" mode RAS Pump 1A shall be controlled by the PLC program, as described above in LOOP 1187 "RAS PUMP STATION NO. 1 CONTROL".

For the RAS VS pump 1A to operate, the field ROL HS-1188A must be in the remote mode, the HOA switch HS-1188B must be in the auto mode, the PLC program will have to have selected pump 1A as the "LEAD" VS pump, seal water must be present and the PLC flow control loop must calling for a variable speed pump to operate. If all of these parameters are met, the PLC program shall smoothly initiate a start of pump 1A and ramp it up slowly to the appropriate speed to satisfy the actual flow conditions. The PLC PID control loop shall output a 4-20 mA analog output signal SC-1188, to RAS pump 1A VFD panel to establish the speed of the pump. The RAS VFD 1A panel shall output a 4-20 mA analog input signal SI-1188, back to PLC to confirm the actual speed of the pump, this signal will be used by the program as a feedback signal in the flow control loop. The PLC program shall have built-in time-delays to prevent nuisance and abrupt starting and stopping of the RAS pumps. The automatic mode will be the desired method of operation to allow the PLC to control the variable speed pump. RAS VS pump 1A will be allowed to be controlled manually by placing the HOA switch HS-1188B in the "HAND" mode thus sending control to the RAS VFD 1A panel to control the speed of the pump by the potentiomer on the front of the VFD panel. Any VS pump that is placed in the "HAND" mode shall cause the PLC program to skip the pump in the automatic mode described above.

An input signal from RAS Pump 1A VFD starter auxiliary contacts shall provide motor status and a confirmed RUN signal to the indicating light YL-1188A at LCP-RAS1 as well as a digital input to PLC. If the PLC program does not receive this confirmed RUN signal in an operator adjustable time limit, the pump shall be shutdown by the PLC program.

The loss of flow for RAS Pump 1A shall be detected by a discharge check valve position switch ZS-1188 mounted on the check valve swing arm. The loss of flow, ZS-1188, shall be an discrete digital input to PLC and will have an operator adjustable software time delay associated with the signal before disabling JY-1188 the discrete digital output to the VFD to interlock and shutdown the RAS Pump 1A. The signal from ZS-1188 will not have to be present to start RAS pump 1A, however it must become satisfied before the operator adjustable time limit expires. A true loss of flow signal or motor overload signal YL-1188B from the VFD, shall activate the "RAS PUMP 1A FAILURE" alarm FL-1188 at LCP-SST1.

Loss of flow as detected by ZS-1188, shall require the reset pushbutton, HS-1188C, to be pressed to reset the PLC logic, after corrective measures have been completed to determine the cause of the failure, before the RAS VS pump 1A can be operated again.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1189

RAS VARIABLE SPEED PUMP 1B

FUNCTION

The RAS VARIABLE SPEED PUMP 1B shall FUNCTION same as Loop 1188.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1190

RAS VARIABLE SPEED PUMP 1C

FUNCTION

The RAS VARIABLE SPEED PUMP 1C shall FUNCTION same as Loop 1188.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1191

RAS CONSTANT SPEED PUMP 1D

FUNCTION

RAS Pump 1D shall be furnished with a locally-mounted REMOTE-OFF-LOCAL (ROL) switch HS-1191A. The "Remote" position shall arm controls located at the LCP-RAS1. The "Off" position shall be lockable and shall prevent the RAS pump from operating, overriding all other controls. The "Local" position shall be spring loaded to OFF position, and shall be used to operate the RAS pump with HOA switch HS-1191B in the "Off" position.

RAS Pump 1D shall be provided with a HAND-OFF-AUTO (HOA) switch mounted at the LCP-RAS1. In the "Hand" mode RAS Pump 1D shall run continuously. In the "Off" mode the RAS pump shall only operate in the "Local" mode at the ROL switch HS-1191B. In the "Auto" mode RAS Pump 1D shall be shall be controlled as described above in LOOP 1187 "RAS PUMP STATION NO. 1 CONTROL" for a constant speed pump and as sequenced by a discrete PLC output to motor starter in MCC-SST1, and depending on lead-lag selector switch HS-1187B mode.

A discrete digital input to PLC from MCC-SST1 for RAS Pump 1D starter auxiliary run contacts, shall provide RUN indicating light YL-1191 status at LCP-RAS1.

The loss of flow for RAS Pump 1D shall be detected by a discharge check valve position switch ZS-1191 mounted on the check valve lever. The loss of flow shall be an input to MCC-SST1 starter and issued to the LCP-RAS1 as a common failure. The common failure alarm shall be a discrete digital input YL-1191B, and shall initiate the "RAS PUMP 1D FAILURE" alarm FL-1191 at LCP-SST1.

Loss of flow as detected by ZS-1191, or a motor overload signal shall require a reset at MCC-SST1 to reset the starter logic and the PLC logic, after corrective measures have been completed to determine the cause of the failure, before RAS Pump 1D can be operated again.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1192

RAS CONSTANT SPEED PUMP 1E

FUNCTION

The RAS CONSTANT SPEED PUMP 1E shall FUNCTION same as Loop 1191.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1193

RAS CONSTANT SPEED PUMP 1F

FUNCTION

The RAS CONSTANT SPEED PUMP 1F shall FUNCTION same as Loop 1191.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1194

RAS PUMP STATION NO. 1 FLOW CONTROL

FUNCTION

To assist operation of the RAS Pump Station No. 1, a readout of the AST Influent flow and RAS return flow to the AST's shall be displayed on the front of LCP-RAS1.

The AST Influent Flow is calculated by existing (OGW) PLC-PEB. PLC shall obtain this signal and shall display flow on soft recorder (data logger / trend panel) FIR-1194A on the front of LCP-RAS.

The total RAS return flow to the AST's is summed by PLC. PLC shall obtain this signal and display flow on soft recorder (data logger / trend panel) FIR-1194B on the front of LCP-RAS1.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

3.8

STANDBY GENERATOR FACILITIES

LOOP 4203

EQUIPMENT INTERLOCKING AND TIMING SEQUENCE FOR OPERATION ON STANDBY POWER - MODIFICATIONS

FUNCTION

The intent of this functional description is to provide an overall time-action sequence of events when there is a utility power failure. The new equipment added as part of this Contract shall be connected to the generator per the current logic and sequence.

The following existing (OGW) PLCs have been programmed for a sequential response procedure: PLC-HWE, PLC-NaOCl, PLC-ORHW, PLC-ORPST, PLC-ORSP, PLC-ORUSS, PLC-PSTE, PLC-SP, and the 12KV switchgear PLC. These existing (OGW) PLCs have been programmed to provide interlocking of equipment and programming for sequential removal of the interlocks after utility power has been restored. The Contractor shall be responsible for the modifications of the existing (OGW) programming to accommodate the equipment being installed under this Contract. Due to the electrical nature of the equipment being installed under this Contract, the existing Time-Action programming must be modified to allow for a different order of equipment interlocking, enabling of operation, and sequential removal of interlocks once the utility power has been restored.

The following PLCs shall be programmed in a similar format: PLC-ASTN, PLC, and PLC.

The existing (OGW) 12KV switchgear provides a discrete digital input to the remote I/O-MSB of existing (OGW) PLC-NaOCI upon the loss of utility power. Existing (OGW) PLC-NaOCl sends a "utility power failure" signal to existing (OGW) PLC-SP. All of the above listed existing (OGW) PLCs, via the existing (OGW) PLC TCP/IP, are coordinated through existing (OGW PLC-SP) to start their respective timing sequence and interlocking. Existing (OGW) PLC-SP shall be programmed to send a "utility power failure" signal to the PLCs installed under this Contract, via the PLC TCP/IP, to start their respective timing sequence and interlocking. The existing (OGW)12KV switchgear (simultaneously) sends a "utility power failure" signal to the existing (OGW) main generator control panel to initiate starting of the generators, via existing (OGW) LCP-G1 and LCP-G2. If utility power is restored within the adjustable time period for utility failure verification, the non-essential loads shall be disabled and the critical loads shall be sequenced back On Line as indicated herein. If utility power is not restored within the verification time period, the generators shall assume the "critical" loads of the plant. The restart sequence shall be the same as above. Once utility power is restored and Main Circuit Breaker A has reclosed, all PLC disabling interlocks shall be sequentially removed.

The time-action setpoints indicated herein are intended to serve as a guideline. The setpoints shall be adjustable at existing (OGW) LCP-SP (use the PLC-SP operator interface workstation) and final settings shall be made by the Contractor during commissioning of the Standby Generator 2 System as directed by the COR.

Note that the existing (OGW) PLCs listed herein have programming in place. The existing (OGW) programming shall be modified to accomplish the modified Time Action sequence as substantially indicated herein.

Refer to Division 16, and the respective Loop descriptions for detailed information.

The Time-Action sequence shall be as follows. Existing (OGW) PLCs and equipment shall not be identified as existing herein.

TIME

ACTION

0 seconds

PLC timing programs shall start.

(utility power failure)

PLCs shall disable the interlocked equipment.

12KV Main Circuit Breaker "A" shall remain closed.

12KV Feeder Breaker "A1" and/or "B1" shall remain closed.

12KV Generator Feeder Breaker "A7" and/or "B7" shall remain closed.

Open all remaining 12KV Feeder Breakers.

Start Generator 1 and Generator 2.

30 seconds

Has utility power been restored?

If yes: Begin Restart Sequence in 10 seconds.

If no: Open Main Circuit Breaker "A."

Close Generator Circuit Breaker G1. Close Generator Circuit Breaker G2. Close generator tie breaker AGT or BGT (pre-selected by switch) to energize main 12KV switchgear with standby power.

40 seconds

Begin closing the following previously closed 12KV Feeder Breakers in the following order:

(Restart Sequence)

A4

(MSB)

(CRITICAL)

B4

(MSB)

A2

(PST)

B2

(PST)

A3

(SP)

B3

(SP)

A5

(AST)

B5

(AST)

A6

(SST)

B6

(SST)

70 seconds

Enable NPWPS-2 Lead Jockey Pump (PLC)

75 seconds

Enable NPWPS-2 Lead Pump (PLC).

80 seconds

Enable NPWPS-2 Lag Pump (PLC).

85 seconds

Enable NPWPS-1 Lead Pump (PLC-NaOCl).

90 seconds

Enable NPWPS-1 Lag Pump (PLC-NaOCl).

95 seconds

Enable Lead Variable Speed Influent Pump(PLC-HWE)

110 seconds

Enable Lag Variable Speed Influent Pump (PLC-HWE)

125 seconds

Enable Lead Constant Speed Influent Pump (PLC-HWE)

140 seconds

Enable Lag Constant Speed Influent Pump (PLC-HWE)

150 seconds

Enable Standby Process Air Blower (PLC-ASTN)

450 seconds

Enable Lead Secondary Channel Air Blower (PLC-ASTN)

460 seconds

Enable Lead VS RAS Pump (PLC)

465 seconds

Enable Lag VS RAS Pump (PLC)

470 seconds

Enable Lead CS RAS Pump (PLC)

475 seconds

Enable Lag CS RAS Pump (PLC)

480 seconds

Enable IMLR Pumps for AST Tanks 1 and 2 (PLC-ASTN)

485 seconds

Enable IMLR Pumps for AST Tanks 3 and 4 (PLC-ASTN)

490 seconds

Enable IMLR Pumps for AST Tanks 5 and 6 (PLC-ASTN)

495 seconds

Enable Mixers for AST Tanks 1 and 2 (PLC-ASTN)

500 seconds

Enable Mixers for AST Tanks 3 and 4 (PLC-ASTN)

505 seconds

Enable Mixers for AST Tanks 5 and 6 (PLC-ASTN)

510 seconds

Enable Lead ORHW Exhaust Fan (PLC-ORHW)

515 seconds

Enable Lead ORPST Exhaust Fan (PLC-ORPST)

520 seconds

Enable Lead ORHW Recirculation Pump (PLC-ORHW)

525 seconds

Enable Lead ORPST Recirculation Pump (PLC-ORPST) 530 seconds

Enable Primary Sludge Pump Program (PLC-PSTE) 535 seconds

Eq Tank wet well pumps

540 seconds

Was utility power restored within the verification time period?

If yes: PLC's shall remove their disabling interlocks (and their timing program shall be reset) in 10 second intervals in the following order:

1.

PLC-HWE

2.

PLC-NaOCl

3.

PLC-ORSP

4.

PLC-ORUSS

5.

PLC-ORPST

6.

PLC-PSTE

7.

PLC-SP

8.

PLC-ORHW

9.

PLC

10.

PLC-ASTN

11.

PLC

12.

PLC-12KV Switchgear

The generators shall continue to operate for 600 seconds (with their circuit breakers open) and shall then begin their cool down program.

If no: Wait until the 1800 second time setpoint for a status update.

1800 seconds

Has utility power been restored?

(Generator Minimum Run Time)

If no: Maintain interlocks until utility power is restored.

If yes: Generators shall synchronize to utility power.

Main Circuit Breaker "A" shall close.

Generator Circuit Breaker(s) shall open after the preset paralleling time period.

The generators shall begin their cool-down program.

Once standby power is no longer present and Main Circuit "A" has reclosed, PLCs shall remove their disabling interlocks (and their timing program shall be reset) in 10 second intervals in the following order:

1.

PLC-HWE

2.

PLC-NaOCl

3.

PLC-ORSP

4.

PLC-ORUSS

5.

PLC-ORPST

6.

PLC-PSTE

7.

PLC-SP

8.

PLC-ORHW

9.

PLC

10.

PLC-ASTN

11.

PLC

12.

PLC-12KV Switchgear

LOOPS 5101-5106

EQUALIZATION TANKs NO. 1 & 2 MIXERS (EQM-1 to 6)

FUNCTION

Equalization Tanks No. 1 & 2 shall be furnished with three (3) mixers each. These mixers shall be used to maintain a mixed environment.

The mixers shall be identified according to the anoxic zone in which they are located. The names are as follows: Mixer 1, Mixer 2, Mixer 3, Mixer 4, Mixer 5 and Mixer 6.

Each mixer shall be provided with a remote-off-local (ROL) switch at the mixer location and an on-off selector switch at LCP-DAF. When a mixer's remote-off-local switch is in the REMOTE position and the respective on-off switch is in the ON position, that mixer shall operate continuously. LOCAL position shall start the mixer and spring return to OFF when released. The OFF position of the ROL shall override all controls and shall be lockable.

LCP-DAF shall receive discrete input signals from MCC-DAF, respective of each mixer, upon a motor failure condition. LCP-MIN shall initiate motor failure alarms and shall provide discrete digital inputs to PLC, respective of each mixer.

LCP-DAF shall receive discrete input signals from MCC-DAF, respective of each mixer, when a mixer is operating. LCP-DAF shall initiate run status and shall provide discrete digital inputs to PLC, respective of each mixer.

If Equalization Tank No. 1 low level alarm LAL-5101 is detected by PLC, PLC logic will shutdown the Mixer 1, 2 & 3 in either HAND or AUTO mode.

If Equalization Tank No. 2 low level alarm LAL-5102 is detected by PLC, PLC logic will shutdown the Mixer 4, 5 & 6 in either HAND or AUTO mode.

Upon loss of utility power and prior to the availability of standby power, PLC shall disable the operation of all 6 mixers in Equalization Tank No. 1 & 2. After the time delay, PLC shall enable the mixers in sequence with 5 second delay between two consecutive start calls. Refer to Loop 4203 for sequence timing.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

If the plant influent flow meter detects a flow above 25 MGD (the setpoint selected by the operator), the 42-inch flow control valve in conjunction with the 48-inch mag meter on the primary effluent bypass line will be used to divert flows to the EQ tank in access of 25 MGD. The 60-inch, motor-operated gate in the existing primary effluent bypass junction structure will be open, and the 72-inch, motor-operated gate will be closed.

LOOP 5104

EQUALIZATION TANK GATE (EQTV-1)

FUNCTION

EQTV-1 shall be provided with a selector switch HS-5104A (LOCAL-OFF-REMOTE), a selector switch HS-5104B (OPEN/CLOSE), all at the gate location.

In the LOCAL position of selector switch HS-5104A (LOCAL-OFF-REMOTE), gate operation shall be controlled by the selector switch HS-5104B (OPEN/CLOSE). The local-off-remote switch HS-5104A (LOR) shall be lockable in the OFF position and prevent operation of the gate locally or remotely. In the REMOTE position of selector switch HS-5104A (LOR), LCP-DAF logic shall initiate status YL-5104 (REMOTE) at the LCP-DAF and shall permit the gate operation to be controlled by soft buttons HS-5104C (OPEN) and HS-5104D (CLOSE) at the LCP-DAF.

EQTV-1 shall be provided with position switch ZSC-5104 (CLOSED). LCP-DAF shall receive a discrete input from ZSC-5104 (CLOSED) when the gate is completely closed and shall initiate gate closed status YLC-5104 displayed on the HMI client.

LCP-DAF shall receive a discrete input from EQTV-1 if a FAILURE condition has occurred. LCP-DAF shall initiate alarm FL-5104 (EQTV-1 FAILURE) and shall provide a discrete digital input to PLC-DAF.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 5108

EQUALIZATION WET WELL PUMP 1 (EQWWP-1)

FUNCTION

EQWWP-1 shall FUNCTION as one of two pumps. EQWWP-1 shall be provided with a remote-off-local selector switch HS-5108A (ROL) at the pump location and a hand-off-auto selector switch HS-5108B (HOA) at panel LCP-DAF. In the REMOTE position of selector switch HS-5108A (ROL) the pump shall run as selected by the switch HS-5107B (HOA). The LOCAL position of selector switch HS-5108A (ROL) shall enable ON-OFF hand switch HS-5108C to operate the pump in case of SCADA System failure. The OFF position of selector switch HS-5108A (ROL) shall be lockable and shall override all other switches. However, the LOCAL position of selector switch HS-5108A (ROL) shall override the OFF position of switch HS-5107B (HOA).

In the HAND position of selector switch HS-5108B (HOA) the pump motor shall run continuously at the speed set at the VFD.

A two position LEAD/STANDBY pump selector switch HS-5108D (P1,P2) at LCP-DAF shall provide two discrete digital inputs to PLC. Based on the operator's selection of the LEAD pump, the PLC logic will select the LEAD pump of either EQWWP-1 or 2, with the STANDBY pump EQWWP-2 or 1, respectively. If flow is not detected by a discrete digital input from check valve position switch ZS-5108 located in the LEAD pump discharge piping within a preset operator adjustable time, the PLC logic will initiate the STANDBY pump. The PLC logic shall shut down and lockout the LEAD pump with reset of the logic by pushbutton HS-5108C (RESET). Assuming Pump 1 was selected as LEAD, PLC-DAF shall initiate alarm FL-5108B (EQWW PUMP 1 FAILURE) at LCP-DAF. Alarm FL-5108B (EQWW PUMP 1 MOTOR FAILURE) shall be included in the common alarm UA-5100 (EQ SYSTEM FAILURE) at the ADMIN-PCC.

In the AUTO position of selector switch HS-5108B (HOA), control (start/stop/speed) of the pump shall be dictated by proportional-integral-derivative (PID) type logic in PLC. The LEAD pump shall attempt to maintain the plant influent flow setpoint.

If wetwell low level alarm LAL-5110 is detected by PLC, PLC logic will shutdown the pump in either HAND or AUTO mode.

A discrete digital input signal from the VFD's auxiliary run contacts shall provide motor indicating light YL-5108 (RUN) status at LCP-DAF and shall provide a discrete digital input to PLC.

A discrete digital input signal from the VFD's auxiliary fail contacts on VFD failure shall initiate alarm FL-5108B (EQWW PUMP 1 MOTOR FAILURE) at LCP-DAF. Alarm FL-5108B (EQWW PUMP 1 MOTOR FAILURE) shall be included in the common alarm UA-5100 (EQ SYSTEM FAILURE) at the ADMIN-PCC.

Upon loss of utility power and prior to the availability of standby power, PLC shall disable the operation of the pumps. After the time delay as described in Loop 4203, PLC shall enable the Lead pump.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 5109

EQUALIZTION WET WELL PUMP 2 (EQWWP-2)

FUNCTION

EQWWP-2 shall FUNCTION as one of two pumps. EQWWP-2 shall have the same FUNCTION as Loop 5108.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 5109M

EQUALIZATION WET WELL FLOW METER

FUNCTION

A flow meter FIT-5109M shall be provided on the Equalization Wet Well discharge. FIT-5109M shall provide an analog input to PLC and also provide a signal to flow indicator FI-5109M at LCP-DAF.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 5111

EQUALIZATION TANK GATE (EQTV-2)

FUNCTION

EQTV-2 and components listed herein shall have the same FUNCTION as Loop 5104.

COMPONENTS

* REFER TO SECTION 25 20 14 ATTACHMENT.XLS FILE

LOOP 1258

SST EFFLUENT GALLERY SUMP PUMP 4 (SSTSP4)

FUNCTION

The SSTSP4 system shall be provided with a hand-off-auto selector switch HS-1255 (HOA) mounted in a pump supplier furnished control panel (LCP-SSTSP4) at the pump location.

The panel shall monitor the sump level with float switches LSL-1258, LSH-1258, and LSHH-1258. In AUTO mode, the pump shall operate when the level rises to the level set by float switch LSH-1258 (HIGH LEVEL) and pump down until the level falls to the low level set by float switch LSL-1258 (LOW LEVEL). In HAND mode, the pump shall operate continuously.

Pump shall be equipped with high temperature switch TSH-1258 in the motor windings to stop operation on winding high temperature.

Pump shall be equipped with moisture sensing element ME-1258. Warning light ML-1258 for moisture alarming shall be provided in the control panel.

Initiate alarm FL-1258 (SSTSP-4 FAIL) at panel LCP-SST4 on either pump winding high temperature or on pump overload.

Initiate alarm LAHH-1258 (SST SUMP 4 HIGH HIGH LEVEL) at panel LCP when level rises to level set by float switch LSHH-1258.

Alarms LAHH-1258 and FL-1258 shall be included in the common alarm FL- 1258 (SST EFFLUENT GALLERY SUMP PUMP FAILURE) at the ADMIN-PCC.

For additional detail of vendor supplied equipment, see Division 11 for appropriate equipment specifications.

LOOP 1259

EQ WET WELL SUMP PUMP (EQSP)

FUNCTION

EQSP shall FUNCTION same as LOOP 1258 except run only in manual mode.

PART 4 - MEASUREMENT AND PAYMENT

The work performed by the Contractor under this Specification shall not be measured and paid for directly, but shall be considered to be included in the Lump Sum Bid for this Contract.

- End of Specification – August 25, 2015 System Functional Requirements

USIBWC IBM15B0002

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