AMD0006_-_Specifications_0006.pdf

Arkansas Valley Conduit Injection Site Phase 1 and Backflow Preventer Site Amendment No. 0006 Fryingpan-Arkansas Project, Colorado Solicitation No. 140R6023R0013

Casework and Countertops Revised - 12 30 00 - 1

SECTION 12 30 00

CASEWORK AND COUNTERTOPS

PART 1 GENERAL

1.01 MEASUREMENT AND PAYMENT

A. Cost: Include in price offered in the Price Schedule for Chemical Building and Appurtenant Works.

1.02 REFERENCE STANDARDS

A. American National Standards Institute (ANSI)

1. ANSI/RESNA SS-1:2019 Rehabilitation Engineering and Assistive

Technology Society of North America, Support Surfaces - Volume 1: Requirements and Test Methods for Full Body Support Surfaces

B. Builders Hardware Manufacturers Institute (BHMA)

1. BHMA A156.9-20 Cabinet Hardware

1.03 SUBMITTALS

A. In accordance with Section 01 33 00 – Submittals.

B. RSN 12 30 00-1, Approval Drawings and Data:

1. Items in Part 2 Products.

2. Manufacturer’s technical product data sheets for each product:

a. Base cabinets.

b. Deleted

c. Countertops.

d. Cabinet hardware, including hinges, knobs, catches, and drawer slides.

3. Shop Drawings:

a. Show plans, elevations, details, and attachment to adjacent work.

b. Show materials, finishes, filler panels, hardware, cutouts for plumbing fixtures, and methods for joining countertops.

4. Manufacturer’s color sample kit for color selection for each product.

5. Manufacturer’s installation instructions for each product.

Casework and Countertops Revised - 12 30 00 - 2

C. RSN 12 30 00-2, Color Samples:

1. Complete set of manufacturer’s standard color samples, finish samples, and texture samples for selection of color, finish, and texture. Color copies of these items are not acceptable and will be returned not approved.

1.04 DELIVERY, STORAGE, AND HANDLING

A. In accordance with Section 01 60 00 – Product Requirements.

B. Do not deliver until building is enclosed.

PART 2 PRODUCTS

2.01 LABORATORY CASEWORK

A. LOC Scientific, Inc., 1036 Parkway Ct., Buford, GA 30518; or equal, having the following essential characteristics:

1. Fully enclosed cabinets with backs, bottoms, and sides.

2. Flat panel doors with square edges.

3. Material: 1/2-inch-thick solid phenolic resin composite material.

4. Color: White.

5. Edges: Machined polished and free from tooling imperfections.

6. Removable back access panel.

7. Refer to Drawing 382-D-60465 for the 14’-0 Utility Bench location in the

Treatment Room:

a. Total length of utility bench: 14 feet 0 inches; Depth = 24 inches; Height

= 36 inches.

b. Base Cabinets:

1) (2) 36-inch wide base cabinets; (1) on each end, each with (1) shelf and double center-meet doors.

2) (4) 24-inch wide base cabinets, each with (1) shelf and double center-meet doors.

2.02 Deleted

A. Deleted

1. Deleted

2. Deleted

3. Deleted

4. Deleted

Casework and Countertops Revised - 12 30 00 - 3

5. Deleted

6. Deleted

2.03 HARDWARE

A. Hinges:

1. Accommodate 1/2-inch door thickness.

2. Meet or exceed BHMA A156.9.

3. One pair per door to 48-inch height.

4. Deleted

5. Deleted

B. Pulls:

1. 304 stainless steel satin 4-inch wire pull:

a. Drawers less than 24-inches in width to receive one pull.

b. Drawers over 24-inches in width to receive two pulls.

c. Doors receive one pull.

C. Drawer Slides: Full extension, ball bearing, side mounting.

D. Adjustable Shelf Supports:

1. Shelf Slips: Nickel-plated 1/4-inch pin and flat support shelf.

2.04 PHENOLIC RESIN COUNTERTOP

A. Phenolic Resin: Solid sheets consisting of thermosetting resins homogenously reinforced with wood fibers formed into a composite panel with high chemical-resistant, heat-resistant, and antibacterial proprieties.

1. Configuration: Provide countertops configuration as indicated on drawings.

2. Thickness: 1 inch.

3. Edge Profile: 1/8-inch beveled top edge with blended bevel corners.

4. Color: Black.

5. Surface: Flat with 1/4-inch marine edge at sink locations.

6. Splashes: Back and side splashes, 3/4-inch thick, 6 inch high, bonded to countertops at jobsite with epoxy resin adhesive:

a. Include top mounted end curb where worksurfaces abut walls, fume hood and other elements.

7. Overhangs: 1 inch on sides and front.

mailto:mnance@usbr.gov

Casework and Countertops Revised - 12 30 00 - 4

2.05 Deleted

A. Deleted

1. Deleted

2. Deleted

3. Deleted

4. Deleted

5. Deleted

B. Deleted

C. Deleted

2.06 ACCESSORIES

A. Filler Strips and Trim: Matching products from cabinet manufacturer.

PART 3 EXECUTION

3.01 EXAMINATION

A. Verify field measurements are as indicated on shop drawings.

B. Verify joint preparation and affected dimensions are acceptable.

C. Coordinate installation of blocking and reinforcement in walls for support of casework.

3.02 INSTALLATION

A. Install components in accordance with shop drawings and manufacturer’s instructions.

B. Align work plumb and level. Use concealed shims as required for casework.

C. Securely mount cabinets at locations indicated on drawings. Fasten wall cabinets through back, near top and bottom, at ends and not less than 24 inches on center.

D. Rigidly anchor countertops to substrate to prevent misalignment.

E. Install filler strips, trim and end panels as required to make up odd dimensions, provide clearance for doors and drawers. Fill spaces between cabinets, and cabinets and adjacent walls.

F. Seal perimeter of fabrication to adjacent construction.

G. Install casework without distortion so doors and drawers fit openings and are aligned.

Adjust doors and drawers for smooth operation without binding.

Casework and Countertops Revised - 12 30 00 - 5

H. Install hardware as shown on drawings.

I. Touch-up nicks and scratches.

3.03 TOLERANCES

A. Casework Tolerance: 1/8 inch in 8 feet.

B. Maximum Countertop Variation from True Dimension: 1/8 inch.

C. Maximum Countertop Offset from True Position: 1/8 inch.

3.04 CLEANING

A. Clean all surfaces in accordance with manufacturer’s instructions. Do not use abrasive cleaners.

3.05 PROTECTION

A. After installation, protect work surfaces from damage.

B. Keep free from paint, plaster, cement scratches, or any other destructive forces.

END OF SECTION

Casework and Countertops

Revised - 12 30 00 - 6

This page intentionally left blank.

HMI and Basic Control Functions Revised - 25 15 11 - 1

SECTION 25 15 11

HMI AND BASIC CONTROL FUNCTIONS

PART 1 GENERAL

1.01 MEASUREMENT AND PAYMENT

A. Cost: Include in prices offered in the Price Schedule for other items of work.

1.02 DEFINITIONS AND ACRONYMS

A. ATS: Automatic Transfer Switch.

B. dBA: “A” Weighted decibels.

C. FAT: Factory Acceptance Test.

D. GPH: Gallons Per Hour.

E. HMI: Human Machine Interface.

F. HVAC: Heating Ventilation and Air Conditioning.

G. I/O: Input/Output.

H. LAH: Level Alarm High.

I. LAL: Level Alarm Low.

J. LSH: Level Switch High.

K. LSL: Level Switch Low.

L. Metering Pump: A pump that moves precise volumes of liquid in a specified time period to provide accurate flow rates. Both Diaphragm and Peristaltic pumps are metering pumps.

M. OIT: Operator Interface Terminal.

N. ORP: Oxidation-Reduction Potential.

O. PID: Proportional-Integral-Derivative.

P. PLC: Programmable Logic Controller.

Q. PSI: Pound per square inch.

R. RTU: Remote Terminal Unit.

HMI and Basic Control Functions

Revised - 25 15 11 - 2

S. SAT: Site Acceptance Test.

T. TCP: Transmission Control Protocol.

U. UPS: Uninterruptible Power Supply.

1.03 REFERENCE STANDARDS

A. International Electrotechnical Commission (IEC)

1. IEC 61131-3-2013 Programmable Controllers – Part 3:

Programming Languages

B. International Society of Automation (ISA)

1. ANSI/ISA 18.2-2016 Management of Alarm Systems for the

Process Industries

2. ANSI/ISA 62381-2011 Automation Systems in the Process Industry

– Factory Acceptance Test (FAT), Site Acceptance Test (SAT), and Site Integration Test (SIT)

1.04 SUBMITTALS

A. In accordance with Sections 01 33 00 – Submittals, and 01 33 26 – Electrical Drawings and Data, and 01 78 30 - Project Record Documents.

B. RSN 25 15 11-1, Approval Data:

1. Items and systems in Part 2 Products.

a. Control logic standards.

b. Graphic display standards.

c. Sequence of operations.

C. RSN 25 15 11-2, Factory Acceptance Test Procedures:

1. Items and systems in Part 2 Products and items and testing in Part 3 Execution.

a. Describe the functional test to be performed to demonstrate full functionality of the system.

b. Provide a list of all hardware to be tested.

c. Provide a list of all installed software and firmware, to include the versions of each.

d. Refer to Paragraph 2.08 B – Factory Acceptance Test Procedure.

D. RSN 25 15 11-3, Factory Acceptance Test Notification:

1. Items and systems in Part 2 Products and items and testing in Part 3 Execution.

HMI and Basic Control Functions Revised - 25 15 11 - 3

a. Refer to 2.08 C – Factory Acceptance Test Notification.

E. RSN 25 15 11-4, Factory Acceptance Test Reports:

1. Items and systems in Part 2 Products and items and testing in Part 3 Execution.

a. Refer to 2.08 D – Factory Acceptance Test Reports.

F. RSN 25 15 11-5, Field Quality Test Report:

1. Items and systems in Part 2 Products and items and testing in Part 3 Execution.

a. Test reports indicating systems tested and results.

G. RSN 25 15 11-6, Final Drawings and Data:

1. Items and systems in Part 2 Products.

a. Operation and maintenance manuals for components furnished, including operating and maintenance instructions.

b. Electronic copies of drawings and diagrams submitted in the service manual in AutoCAD format.

1.05 DESIGN REQUIREMENTS

A. Allow operators to perform control and monitoring of onsite and connected offsite equipment.

B. Graphic displays shall be developed to cover all equipment connected to SCADA System including all-in-one and skid systems.

C. Graphics and control logic shall be configurable by Government to allow for future modifications to the SCADA System.

1.06 SODIUM HYPOCHLORITE MANIFOLD

A. Overview: Influent flow is brought into the Injection Site facility from a single pipe which is then split into three separate lines. The three lines make up the Sodium Hypochlorite Manifold. Sodium hypochlorite is dosed separately into each line based on the flow rate observed at the corresponding flow meter and process water analytical measurements. After dosing, the three lines converge back into a single pipe headed to a buried pipe loop to allow for required contact time before entering the Sodium Bisulfite manifold. For control purposes each line is equipped with a motorized valve, flow meter, pressure reducing valve, pressure transmitter, and a pressure switch.

B. System Startup and Shutdown: Each manifold shall have the ability to be put in or out of service by operations at the HMI. Once a manifold is put into service, and if that lines motor operated valve is in auto, the system shall automatically open the valve and system operation shall begin. If the manifold is put out of service, and if that lines motor operated valve is in auto, the system shall automatically close the valve and stop operation of that manifold.

Revised - 25 15 11 - 4

C. Pressure Control: Pressure though each line is monitored by a pressure transmitter, position signal on the pressure reducing valve, and a pressure switch. While in Auto the motorized valve on each line shall be allowed to open or close via the SCADA system. If the valve is open and a high-pressure condition is observed one of the following shall occur:

1. If multiple lines are running and the position of a pressure reducing valve is greater than 10 percent plus or minus the other pressure reducing valves, then an alarm shall be sent to the alarm package indicating the line affected. Lines not in service and running shall be excluded from that comparison.

2. If pressure above an operator selectable High Pressure setpoint is observed by a pressure transmitter, then a high priority alarm shall be sent to the alarm package indicating the line affected.

3. If pressure continues to rise and is observed by the pressure transmitter above an operator selectable High High Pressure setpoint, the motorized valve associated with that line shall close and an alarm shall be sent to the alarm package indicating the line affected.

4. The pressure switches are configured as a backup to the pressure transmitters for monitoring high pressures. If a pressure switch observes a high pressure for an operator selectable amount of time, the motorized valve associated with that line shall close and a high priority alarm shall be sent to the alarm package. The alarm shall indicate the line affected.

D. Pressure Reducing Valves: The Pressure reducing valve on each line shall be controlled by an external valve controller. The valve controller shall be used to reduce flow rate through the line in the event a higher-than-expected flow rate occurs. To accomplish this flow data from the corresponding flow meter shall be sent to the valve controller from the

PLC.

E. Sodium Hypochlorite Dosing: Sodium hypochlorite is dosed from the sodium hypochlorite system into the static mixer on each line. A Chemical Dosing Equation shall be utilized to determine the required injection rate of Sodium Hypochlorite. The calculated dosing is based on the water flow rate observed at the respective flow meter on the manifold, in conjunction with readings from the total chlorine analyzer and ammonium sensor on Analyzer System 1. The calculated required dosing injection rate shall then be sent to the associated Sodium Hypochlorite pump skid via an analog output.

1. Chemical Dosing Variables:

a. TC1: Total chlorine concentration (mg/L as Cl2) from chlorine analyzer on Analyzer System 1.

b. FA1: Free ammonia concentration (mg/L as N) from ammonium sensor on Analyzer System 1.

c. FRx: Flow rate of water through Sodium Hypochlorite manifold line flow meter (gpm). Where x is equal to 1 (Line 1), 2 (Line 2), or 3 (Line 3)

Revised - 25 15 11 - 5

2. Chemical Dosing Constants:

a. CDR = 2; Non-stoichiometric chlorine dose molar ratio. Operator adjustable setpoint.

b. SHS = 12.5; Sodium Hypochlorite strength (percent w/w). Operator adjustable setpoint.

c. SHSG = 1.21; Sodium Hypochlorite specific gravity. Operator adjustable setpoint.

3. Chemical Dosing Equations:

a. Sodium Hypochlorite dose (mg/L):

SHD = (TC1 * CDR) + (5.061 * FA1 * CDR) – TC1

b. Sodium Hypochlorite Injection Rate (gph):

SHIR = (0.0063 * SHD * FRx) / (SHS * SHSG)

F. Sodium Hypochlorite Dosing Override: The Sodium Hypochlorite dosing shall be monitored by the free and total chlorine analyzer located on Analyzer System 2. If the absolute value of the difference between the two values is greater than an operator configurable tolerance for an operator configurable amount of time, then an override value shall be sent to the CDR constant in the Sodium Hypochlorite dose equation. The override shall last for 4 hours or until the difference between the two values is lower than the tolerance value. A high priority alarm shall be sent to the alarm package. The override condition shall be easily visible on the SCADA screens and allow operators to disable the override as needed.

1. Override Constants:

a. CDRO = 2.5; Override non-stoichiometric chlorine dose molar ratio.

Operator adjustable setpoint.

b. TL2 = 0.30; Tolerance limit for difference between Total Chlorine and Free Chlorine. Operator adjustable setpoint.

c. CDTL = 5; Chlorine difference time limit (minutes). Operator adjustable setpoint.

d. FC2: Free chlorine concentration (mg/L as Cl2) from chlorine analyzer on Analyzer System 2.

e. TC2: Total chlorine concentration (mg/L as Cl2) from chlorine analyzer on Analyzer System 2.

2. Override Dosing Equations:

a. If |FC2-TC2| >= TL2 and timer >= CDTL Then CDR = CDRO

G. Sodium Hypochlorite Line Selection: To accommodate startup flows a smaller temporary line and temporary pump skid shall be used for dosing Sodium Hypochlorite. An operator toggleable button shall be made available at the control screens allowing operations to select the temporary or the full build out system for dosing to manifold line 1. No other lines on the manifold have a temporary setup.

Revised - 25 15 11 - 6

H. Initial Setpoints:

1. Pressure Transmitter:

a. High Alarm: 92 psi.

b. High High Shut Off: 94 psi.

2. Pressure Switch:

a. Pressure Setpoint: 95 psi.

b. Time On: 10 sec.

I. Refer to Drawings 382-D-60510, 382-D-60512, and 382-D-60514.

1.07 SODIUM BISULFITE MANIFOLD

A. Overview: Flow from the buried pipe loop comes into the Sodium Bisulfite manifold from a single pipe that is split into three separate lines. Sodium bisulfite is dosed separately into each line based on the water flow rate observed at the corresponding flow meter and process water analytical measurements. After dosing, the three lines converge back into a single effluent line leaving the facility. For dosing purposes, each line is equipped with a flow meter and an ORP sensor.

B. Sodium Bisulfite Dosing: Sodium bisulfite is dosed from the sodium bisulfite system into the static mixer on each line of the manifold. A Chemical Dosing Equation shall be utilized to determine the required flow rate of Sodium Bisulfite based on the water flow rate observed at the respective flow meter, in conjunction with readings from the free and total chlorine analyzer on Analyzer System 2. The calculated dosing flow shall then be sent to the Sodium Bisulfite pump skid via an analog output.

1. Chemical Dosing Variables:

2. FC2: Free chlorine concentration (mg/L as Cl2) from chlorine analyzer on

Analyzer System 2.

3. TC2: Total chlorine concentration (mg/L as Cl2) from chlorine analyzer on

Analyzer System 2.

4. FRx: Flow rate of water through the Sodium Bisulfite manifold line flow meter

(gpm). Where x is equal to 4 (Line 4), 5 (Line 5), or 6 (Line 6)

5. Chemical Dosing Constants:

6. SBS = 25; Sodium Bisulfite strength (percent w/w). Operator adjustable setpoint.

7. SBSG = 1.20; Sodium Bisulfite specific gravity. Operator adjustable setpoint.

8. BSF = 1.1; Safety factor for Sodium Bisulfite injection rate. Operator adjustable setpoint.

9. Chemical Dosing Equations:

10. SBD: Sodium Bisulfite dose (mg/L):

SBD = 1.468 * FC2

Revised - 25 15 11 - 7

11. SBIR: Sodium Bisulfite Injection Rate (gph):

SBIR = (0.006 * SBD * FRx * BSF) / (SBS * SBSG)

C. Sodium Bisulfite Line Selection: To accommodate startup flows a smaller temporary line and temporary pump skid shall be used for dosing Sodium Bisulfite. An operator toggleable button shall be made available at the control screens allowing operations to select the temporary or the full build out system for dosing to manifold line 4. No other lines on the manifold have a temporary setup.

D. Oxidation-Reduction Potential (ORP): ORP shall be monitored by an ORP sensor located on each line. Several alarm setpoints shall be used to notify operators of abnormal conditions:

1. An operator configurable High ORP Alarm setpoint. Once the ORP Rises above the setpoint for an operator configurable amount of time, a high priority alarm shall be sent to the SCADA alarm package.

2. An operator configurable Low ORP Alarm setpoint. Once the ORP lowers below the setpoint for an operator configurable amount of time, a high priority alarm shall be sent to the SCADA alarm package.

E. Sodium Bisulfite Dosing Override: If the ORP for a line goes above a High ORP Limit setpoint and stays above that level for a time limit, the Bisulfite Safety Factor (BSF) value in the Sodium Bisulfite Injection Rate equation shall be overridden and have its value increased by 0.05. If ORP for a line goes below a Low ORP Limit setpoint and stays below that level for a time limit, the Bisulfite Safety Factor (BSF) value in the Sodium Bisulfite Injection Rate equation shall be overridden and have its value decreased by 0.05. The system shall continue adjusting in this matter until the ORP values are brought back between the ORP limits or operator intervention. Both ORP limits and timer are operator adjustable. If the BSF value is adjusted more than five times without returning to a value between the high and low limits, or if the ORP is overridden and adjusted more than ten times in an hour, a high priority alarm shall be sent to the SCADA alarm package. The override condition shall be easily visible on the SCADA screens and allow operators to disable the override as needed.

F. Initial Setpoints:

1. ORP:

a. High Alarm: Plus 500 mv.

b. Low Alarm: Minus 500 mv.

c. Alarm timer: 5 minutes.

d. High ORP Limit: Plus 200 mv.

e. Low ORP Limit: Minus 200 mv.

f. ORP Limit timer: 2 minutes.

G. Refer to Drawings 382-D-60511, 382-D-60513, and 382-D-60515.

Revised - 25 15 11 - 8

1.08 PUMP SKIDS

A. Overview: Pump skids shall be used for the delivery of chemicals to the static mixers on each manifold. Each pump skid is equipped with two peristaltic pumps in a Lead/Standby configuration, a pressure switch down stream of each pump, and a flow meter on the combined outlet line.

B. Lead/Standby: Pumps shall run in a Lead/Standby configuration. The lead pump shall be selectable by operations from the SCADA screens. To allow even wear on the pumps, an automatic pump lead swap timer shall be made available with an operator selectable setpoint on the SCADA screens. The timer shall also have the ability to be enabled/disabled by operators at the SCADA screens.

C. Pump Failover: The following conditions shall automatically cause the lead pump to shut off, switch the standby pump to the lead position, start the new lead pump, and send an alarm to the SCADA System indicating the failover:

1. The lead pump receives a fault or alarm condition determined by the alarm status of each pump.

2. Loss of pressure or flow for a user selectable time setpoint while commanded to run, determined by the flow meter and pressure switches.

3. If the lead pump fails to start, determined by the run status signal from each pump.

D. Dosing Control: A run signal shall be sent by SCADA to the lead pump on the pump skid that is required for dosing. A pump is required to run if flow is detected by the associated flow meter. The dosing rate of chemicals to the static mixers shall be determined by dosing flow setpoints calculated by SCADA, based on analyzer readings and flow rate.

The speed of the lead pump shall be monitored and adjusted to achieve the required dosing flow rate.

E. Signals:

1. Each pump skid shall, at minimum, send the following data to SCADA:

a. Run status of each pump.

b. Alarm status of each pump.

c. Speed indication of each pump.

d. Pressure switch status on each line.

e. Flow indication of each pump skid.

2. SCADA shall, at minimum, send the following signals to each pump skid:

a. Run command to each pump.

b. Speed command to each pump.

F. Refer to Drawings 382-D-60514 and 382-D-60515.

Revised - 25 15 11 - 9

1.09 SODIUM HYPOCHLORITE SYSTEM

A. Overview: The Sodium Hypochlorite System handles the storage and delivery of sodium hypochlorite. The system consists of two 6000-gallon tanks, three 275-gallon totes, and four delivery lines. Each delivery line has a dosing pump skid attached.

B. For startup the sodium hypochlorite dosed from three 275-gallon totes shall be delivered to the static mixer on valve manifold 3 through SH Feed Skid 1 metering pumps shown on Drawing 382-D-60514. Upon full build out, sodium hypochlorite dosed from the two 6000-gallon tanks shall be delivered to manifolds 1, 2, and 3 via the metering pumps on SH Feed Skid 2, SH Feed Skid 3, and SH Feed Skid 4 shown on Drawing 382-D- 60514.

C. Tank Levels: The two 6000-gallon Sodium Hypochlorite tanks shall be equipped with level sensors. Control panels displaying the tank levels in percentage shall be mounted outside of each chemical room to assist with truck loading. The panels are also equipped with red tank full indicating lights and a sounder. Each level sensor shall have three alarm setpoints associated with them:

1. An operator configurable low level setpoint. When the low level setpoint is reached, SCADA screens shall indicate that the level is low and an alarm shall be sent to the alarm package indicating that the tank level is low.

2. An operator configurable high level setpoint. When the high level setpoint is reached, the SCADA screens shall indicate that the tank is full, and the red indicator at the truck panel shall be illuminated.

3. An operator configurable high high level setpoint. When the high high level setpoint is reached, an alarm shall be sent to the alarm package and a signal shall be sent to the associated truck panels sounder activating it.

D. Panel Meters: The level signals shall be sent from the SCADA System and tank level shall be displayed as a percentage from 0 to 100 percent.

E. Containment Floor Level Switches: In case of leaks the Sodium Hypochlorite tanks are located above a secondary containment pit. The secondary containment area contains a level switch used to indicate if liquid is present and shall cause the following actions:

1. When activated the SCADA screens shall indicate that there is liquid in the secondary containment area and an alarm shall be sent to the alarm package indicating there is liquid in the secondary containment.

F. Initial Setpoints:

1. Tank Level Transmitter:

a. High High Level: 6000 gallons.

b. High Level: 5990 gallons.

c. Low Level: 500 gallons.

Revised - 25 15 11 - 10

2. Room Temperature:

a. High Temperature: 75 degrees F.

b. Low Temperature: 60 degrees F.

G. Refer to Drawings 382-D-60514 and 382-D-60532.

1.10 SODIUM BISULFITE SYSTEM

A. Overview: The Sodium Bisulfite System handles the storage and delivery of sodium Bisulfite. The system consists of two 1500-gallon tanks, two 275-gallon totes, and four delivery lines. Each delivery line has a dosing pump skid attached.

B. For startup the sodium bisulfite dosed from two 275-gallon totes shall be delivered to the static mixer on valve manifold 6 through SB Feed Skid 1 shown on Drawing 382-D- 60515. Upon full build out, sodium hypochlorite dosed from the two 1500-gallon tanks shall be delivered to manifolds 4, 5, and 6 via the metering pumps on SB Feed Skid 2, SB Feed Skid 3, and SB Feed Skid 4 shown on Drawing 382-D-60515.

C. Tank Levels: The two 1500-gallon Sodium Bisulfite tanks shall be equipped with level sensors. Control panels displaying the tank levels in percentage shall be mounted outside of each chemical room to assist with truck loading. The panels are also equipped with red tank full indicating lights and a sounder. Each level sensor shall have three alarm setpoints associated with them:

1. An operator configurable low level setpoint. When the low level setpoint is reached, SCADA screens shall indicate that the level is low and an alarm shall be sent to the alarm package indicating that the tank level is low.

2. An operator configurable high level setpoint. When the high level setpoint is reached, the SCADA screens shall indicate that the tank is full, and the red indicator at the truck panel shall be illuminated.

3. An operator configurable high high level setpoint. When the high high level setpoint is reached, an alarm shall be sent to the alarm package and a signal shall be sent to the associated truck panels sounder activating it.

D. Panel Meters: The level signals shall be sent from the SCADA System and tank level shall be displayed as a percentage from 0 to 100 percent.

E. Room Temperature: Sodium Bisulfite starts to degrade at high temperatures. To monitor this, a temperature sensor shall be located in the Sodium Bisulfite room and monitored by SCADA. The sensors value shall be displayed on SCADA and shall have two alarm setpoint associated with it:

1. An operator configurable high temperature alarm setpoint. Once the temperature rises above the setpoint, an alarm shall be sent to the SCADA alarm package.

2. An operator configurable low temperature alarm setpoint. Once the temperature lowers below the setpoint, an alarm shall be sent to the SCADA alarm package.

Revised - 25 15 11 - 11

F. Containment Floor Level Switches: In case of leaks the Sodium Bisulfite tanks are located above a secondary containment pit. The secondary containment area contains a level switch used to indicate if liquid is present and shall cause the following actions:

1. When activated the SCADA screens shall indicate that there is liquid in the secondary containment area and an alarm shall be sent to the alarm package indicating there is liquid in the secondary containment.

G. Initial Setpoints:

1. Tank Level Transmitter:

a. High High Level: 1500 gallons.

b. High Level: 1490 gallons.

c. Low Level: 50 gallons.

2. Room Temperature:

a. High Temperature: 80 deg F.

b. Low Temperature: 60 deg F.

H. Refer to Drawings 382-D-60515 and 382-D-60532.

1.11 ANALYZER SYSTEM 1

A. Overview: Before entering the sodium hypochlorite manifold, influent water is continually sampled by Analyzer System 1. Analyzer System 1 is used to measure total chlorine and free ammonia. Water sent to the analyzer system is recycled back into the influent line after sampling.

B. Pressure of the line after two pressure reducing valves is monitored by a pressure transmitter before heading to the Total Chlorine Analyzer. Water then enters a flow cell where free ammonia is measured by an Ammonium Sensor. The Water is then sent to a sample holding tank controlled by a multi-point level switch and a pump before being injected back into the influent line.

C. Pressure Control: Pressure is monitored by the pressure transmitter and SCADA. The sensor shall have the following alarms:

1. An operator configurable high pressure alarm setpoint. Once the pressure rises above the setpoint, an alarm shall be sent to the SCADA alarm package.

D. Total Chlorine Analyzer: The Total Chlorine Analyzer shall be monitored by SCADA.

Several alarm setpoints shall be configured to trigger alarms:

1. An operator configurable high total chlorine alarm setpoint. Once the analyzer value rises above the setpoint an alarm shall be sent to the SCADA alarm package.

Revised - 25 15 11 - 12

2. An operator configurable low total chlorine alarm setpoint. Once the analyzer value goes below the setpoint an alarm shall be sent to the SCADA alarm package.

E. Ammonium Sensor: The Ammonium Sensor is located in the flow cell and the sensor shall be monitored by SCADA. Several alarm setpoints shall be configured to trigger alarms:

1. An operator configurable high free ammonia alarm setpoint. Once the analyzer value rises above the setpoint an alarm shall be sent to the SCADA alarm package.

2. An operator configurable low free ammonia alarm setpoint. Once the analyzer value goes below the setpoint an alarm shall be sent to the SCADA alarm package.

F. Sample Holding Tank: The sample holding tank includes a multi-point level switch with four actuation levels and a pump all of which are monitored and controlled by SCADA.

The multi-point level switch shall be used to control the level of the holding tank by turning the pump on or off.

1. If the level in the holding tank reaches the LSH level switch a run command shall be sent to the pump. Once the level of the tank reaches the LSL level switch a stop command shall be sent to the pump. For redundancy and alarming purposes, a LAL and LAH switch are equipped. If the level increases beyond the LSH level switch and the LAH switch is triggered, an alarm shall be sent to SCADA and a run command shall be sent to the pump. In the event the level decreases beyond the LSL level switch and the LAL switch is triggered, an alarm shall be sent to SCADA and a stop command shall be sent to the pump.

G. Initial Setpoints:

1. Pressure Transmitter:

a. High Pressure: 25 psi.

2. Total Chlorine Analyzer:

a. High Total Chlorine: 4.05 mg/L as Cl2.

b. Low Total Chlorine: 0.05 mg/L as Cl2.

3. Ammonium Sensor:

a. High Free Ammonia: 0.6 mg/L as N.

b. Low Free Ammonia: 0.1 mg/L as N.

H. Refer to Drawing 382-D-60516.

1.12 ANALYZER SYSTEM 2

A. Overview: Before entering the sodium bisulfite manifold, water exiting the pipe loop is continually sampled by Analyzer System 2. Analyzer System 2 is used to measure free

Revised - 25 15 11 - 13 chlorine and total chlorine. Water sent to the analyzer system is recycled back into the line coming from the buried pipe loop.

B. Pressure of the line after a pressure reducing valve is monitored by a pressure transmitter before heading to the Free and Total Chlorine Analyzer. Water is then sent to a sample holding tank controlled by a multi-point level switch and a pump before being injected back into the buried pipe loop line.

C. Pressure Control: Pressure is monitored by the pressure transmitter and SCADA. The sensor shall have the following alarms:

1. An operator configurable high pressure alarm setpoint. Once the pressure rises above the setpoint, an alarm shall be sent to the SCADA alarm package.

D. Free and Total Chlorine Analyzer: The Free and Total Chlorine Analyzer shall be monitored by SCADA. Several alarm setpoints shall be configured to trigger alarms:

1. An operator configurable high free chlorine alarm setpoint. Once the analyzer value rises above the setpoint an alarm shall be sent to the SCADA alarm package.

2. An operator configurable low free chlorine alarm setpoint. Once the analyzer value goes below the setpoint an alarm shall be sent to the SCADA alarm package.

E. Sample Holding Tank: The sample holding tank includes a multi-point level switch with four actuation levels and a pump all of which are monitored and controlled by SCADA.

The multi-point level switch shall be used to control the level of the holding tank by turning the pump on or off.

1. If the level in the holding tank reaches the LSH level switch a run command shall be sent to the pump. Once the level of the tank reaches the LSL level switch a stop command shall be sent to the pump. For redundancy and alarming purposes, a LAL and LAH switch are equipped. If the level increases beyond the LSH level switch and the LAH switch is triggered, an alarm shall be sent to SCADA and a run command shall be sent to the pump. In the event the level decreases beyond the LSL level switch and the LAL switch is triggered, an alarm shall be sent to SCADA and a stop command shall be sent to the pump

F. Initial Setpoints:

1. Pressure Transmitter:

a. High Pressure: 25 psi.

2. Free and Total Chlorine Analyzer:

a. High Free Chlorine: 3.00 mg/L as Cl2.

b. Low Free Chlorine: 0.15 mg/L as Cl2.

G. Refer to Drawing 382-D-60516.

Revised - 25 15 11 - 14

1.13 AUXILLARY WATER SYSTEM

A. Overview: The Auxiliary Water System is primarily used to send potable water to emergency safety showers around the site. The system consists of two 400-gallon potable water tanks, three pumps used to deliver water, and three tankless water heaters.

B. Storage Tanks: Each storage tank is equipped with a level transmitter, level switch, and a solenoid valve on the outlet. All monitoring and control shall be handled by SCADA.

1. Lead/Standby: The storage tanks shall operate in a Lead/Standby fashion. Lead tank selection shall be made available to operators on the SCADA HMI. If one of the tanks is out of service, the low level setpoint is reached, or the low level switch is active, the system shall atomically adjust which tank is the lead tank.

2. In Service/Out of Service: To facilitate filling and maintenance, the ability to put each tank In Service or Out of Service shall be made available to operators via the SCADA HMI. When taken out of service, the logic shall automatically adjust which tank is the lead tank and interlock the associated solenoid valve closed until the tank is put back into service.

3. Tank Control: The lead tank shall be utilized for water delivery until an operator selectable low level setpoint is reached, available at the SCADA screens. Once that setpoint is reached the solenoid valve shall close and the empty tank shall be set as the Standby tank. The full tank shall become the new Lead tank, and its solenoid valve shall be opened. An informational message denoting the empty tank shall be sent to the alarm package.

4. In case of failure, a level switch shall operate identically when triggered but shall also send an alarm to the alarm package.

C. Pump Skid: The three pumps used to deliver water shall be controlled by a skid package and shall interface with SCADA for all monitoring and alarming available. The pump skid shall automatically turn on a pump when the pressure switch located on the discharge manifold sees a pressure drop.

D. Initial Setpoints:

1. Level Transmitters:

a. Low level: 1 ft.

E. Refer to Drawing 382-D-60517.

1.14 MISCELANEOUS CONTROLS

A. Holding Tank: A holding tank located outside of the Injection Site facility is used to collect liquid from floor drains in the building. A level sensor shall be installed to monitor the level and notify operations that it is full once a high level is reached:

1. An operator configurable high level setpoint shall be made available on SCADA.

Once the level of the holding tank reaches that setpoint an alarm shall be sent to the alarm package to notify operators that the holding tank is full.

Revised - 25 15 11 - 15

B. HVAC: Three HVAC units shall be utilized at the injection site. Each chemical room shall have its own dedicated HVAC unit with the remaining unit handling the rest of the facility. All three units shall have a dry contact connected to the SCADA System which shall be used for alarming purposes.

C. Autodialer: An autodialer shall be used for alarm call outs. The SCADA System shall be connected to the autodialer via dry contacts and shall send a callout signal to the autodialer. Two connections to the autodialer shall be present. One shall be utilized to call out for Injection Site high priority alarms. The other shall be setup to call out for remote site high priority alarms.

1. Each callout list shall be designed to allow for easy addition or removal of alarms.

D. Exhaust Fans: Exhaust fans shall be installed in the Sodium Hypochlorite Room and the Sodium Bisulfite Room. Each exhaust fan shall be monitored by SCADA, with their run status available at the SCADA screens. The chemical room fans shall alarm if there is a failure to run:

1. A high priority alarm shall be sent to the SCADA alarm package if an exhaust fan stops running for an operator configurable amount of time.

E. Power Monitor: A power monitor shall be installed in the SCADA and Electrical Room for power condition monitoring. All status and alarms shall be monitored by the SCADA system via Modbus TCP and made available on the SCADA screens and alarm package.

1. A high priority alarm shall be sent to the SCADA alarm package if a loss of power, or irregular power conditions occur.

F. ATS: An automatic transfer switch shall be installed in the SCADA and Electrical Room.

All status and alarms shall be monitored by the SCADA system via Modbus TCP and made available on the SCADA screens and alarm package.

1. A high priority alarm shall be sent to the SCADA alarm package if the ATS has switched to backup power.

G. UPS: The UPS installed in the server racks shall be monitored by SCADA via Modbus TCP. The UPS status and alarms shall be sent to the SCADA screens and alarm package:

1. A high priority alarm shall be sent to the SCADA alarm package if the UPS detects a loss of power or if it is running on battery power

H. Initial Setpoints:

1. Holding Tank Level Transmitter:

a. High level: 9 ft.

2. Exhaust Fan:

a. Stopped Running Timer: 30 seconds.

Revised - 25 15 11 - 16

PART 2 PRODUCTS

2.01 HMI AND GRAPHIC DISPLAYS

A. Designed to support user situational awareness, intuitive navigation, and intuitive system status and condition information.

B. Support all types of tasks and activities required of the operator.

C. Separate graphic display screens shall be designed and provided for screens with different functions and locations.

D. Use consistent design philosophy across graphic displays, however the specific functions desired for the individual screens may require unique arrangements of graphics and information.

E. SCADA graphic displays: Incorporate a hierarchy of displays that provide a progressive exposure to detail. The following list provides a general guideline for the hierarchy of displays:

1. Highest-level display shall show the entire system within the operator’s control.

Display is intended to act as an overall indicator as to how the facility is running, by tracking key performance indicators.

2. Displays for each offsite location.

3. Displays for each process system, and common systems.

4. Displays shall consist of smaller, sectional system operations.

5. Displays shall consist of detail information on system operations.

F. User interaction techniques shall be developed in accordance with the following guidelines:

1. Clear, with graphics consistent in method they present similar information.

2. Graphic functions: Standardized, intuitive, straight forward with minimal user manipulation.

3. Include error tolerance in user interaction for critical devices with simple notification of error and effective methods for recovery.

G. Develop color scheme for graphic displays:

1. Grey backgrounds for graphics, with minimal use of color in the graphics.

2. Utilize color very specifically and consistently.

3. Color alone shall not be the sole differentiator of an important condition or status.

H. Include analog representation of important measurements, indicating their value relative to normal, abnormal and alarm conditions. Include embedded and formatted trends of important parameters.

Revised - 25 15 11 - 17

I. Include visual indication if an operator input field, or other operator-initiated control function, has been disabled.

J. Response time requirements for the graphic displays:

1. Graphic displays shall take no longer than 3 seconds to appear when called up.

2. Update live information on the display at least every 2 seconds unless the critical nature of the process information displayed requires more frequent updating.

K. Provide feedback on the completion of an action or of the failure to complete an action.

L. Component Depiction:

1. Utilize standard shapes for components. Shapes should be simple and avoid unnecessary detail.

2. Show status of components clearly and consistently.

3. Include operating hours on operating and standby rotating equipment.

4. Provide faceplates to display detailed component information and user input fields.

5. Vessels and Tanks: Show size relative to process importance of component and relate to its physical size.

6. Process Lines: Limited number of line types and line thickness.

7. Process Controllers:

a. Depicted as a physical entity on the graphics, with key values such as setpoint, output, and control mode displayed.

b. Provide faceplate-type displays for process controllers with detailed information and user-input fields, where required, for process controller.

M. Text and Values:

1. Do not display leading zeros when depicting values unless value is less than 1.

2. All numerical values shall display, at minimum, two decimal places.

3. Differentiate live values from static text, for example by depicting live values with a color. Units of measure should not be depicted as a live value.

a. Scientific notation for live values is prohibited, for example, 2.3x106, or

1.2E5.

4. Provide faceplates for live values with additional details, including point name.

N. Provide visual display of In Service/Out of Service application and when equipment is in ‘Local’ operation and not controlled from SCADA System.

O. Provide faceplates for sequences, including automatic startup and shutdown.

Revised - 25 15 11 - 18

P. Provide dynamic permissive and interlock (first-out) lists accessible directly from control faceplates to allow the operator to quickly determine why the device does not have an operational permissive. Annunciate active trip conditions on the graphic, not just the condition that caused the trip (first-out condition).

Q. Alarms:

1. Alarms and indications of abnormal situations: Clear, prominent, and consistently distinguishable.

2. Design alarm display and interface in accordance with ANSI/ISA 18.2.

3. Design alarming around alarm rationalization in accordance with ANSI/ISA 18.2.

a. High priority alarms shall be sent to the autodialer. High priority in this Section refers to alarms that require operator response in a minimal timeframe.

4. Provide the following minimum alarm displays:

a. Alarm summary, including:

1) Sorting by priority.

2) Sorting by group.

3) Sorting by time stamp.

b. Alarm status.

c. Alarm log.

d. Alarm Identifier detail.

e. First-out.

f. Out-of-service alarm.

g. Suppressed alarm.

h. Alarm indication on process.

i. Alarm banner showing recent alarms.

5. Displays shall provide the operator the ability to:

a. Silence audible alarm indicators (without acknowledging the alarm).

b. Acknowledge alarms.

c. Place alarms out of service (access-controlled operation).

d. Modify alarm attributes (access-controlled operation).

6. Alarm indication in the process system graphic displays shall be performed using an alarm flag where color, indication, and the shape of the alarm flag are consistent with the priority of the alarm. A single color and shape shall be used universally for each priority level for the alarms.

Revised - 25 15 11 - 19

7. Alarm indication in the SCADA System shall have audible alarms associated with them:

a. Each alarm priority shall have its own unique alarm sound.

b. Sound level of alarm shall be enough for easy detection, with a value of 15 dBA above background noise, not to exceed 40 dBA.

c. Lower priority alarms can be muted during a higher priority alarm.

d. Include a time out function to automatically reinstate audible alarms after a significant duration of time has passed.

8. Process graphic shall visually and consistently identify alarm identifier in alarm, whether alarm is acknowledged and priority of alarm.

R. No animation except for specific alarm related graphics.

2.02 CONTROL

A. Provide capability of programming control logic in SCADA System using the following programming languages in accordance with IEC 61131-3:

1. Ladder Diagram.

2. Function Block Diagram.

3. Structured Text.

B. Implement the majority of the control logic in the SCADA System using Ladder Diagram or Function Block Diagram, with only selected areas implemented using other methods where necessary.

C. Emphasize readability and maintainability in control logic implementation.

D. Fully document all control logic developed for the facility.

E. Designed to aid operator over complete operating range of facility while controlled equipment is In Service.

F. Available and configurable parameters usable to control equipment within manufacturer’s limitations shall be incorporated into the system design.

G. Provide modifiable setpoints and control variables, including operator adjustable setpoint deadbands, delays, alarm setpoints, and control setpoints that are modifiable by operator in the graphic displays:

1. Include sufficient setpoints to allow operator adjustment of system through desired facility operating range.

2. All values referred to as ‘setpoints’ in these specifications: Modifiable from the graphic displays.

Revised - 25 15 11 - 20

H. Include system of interlocks to:

1. Prevent improper and hazardous actions of control system.

2. Provide maximum flexibility of system operation, maintenance, testing and calibration while providing safe operating conditions.

I. Provide logic to minimize requirement for operator intervention:

1. Designed to incorporate permissives which ensure prerequisite conditions for safe operation are met prior to allowing equipment to energize, start, open, or close, as appropriate.

2. Incorporate interlocks to prevent equipment from operating in unsafe or potentially damaging conditions.

J. Grouped Control Logic:

1. Provided where multiple components are required to operate in a prescribed combination or sequence.

2. Start or stop motors and open or close valves in predetermined sequence without requiring operator action during the process.

3. Provide manual mode to allow step-by-step operator control in event of process interruption.

K. Provide control logic to detect and mitigate bad quality or out of range signals. Logic shall drive devices to a safe state, substitute a value, or hold last value as appropriate for application.

L. Fault checking shall be included and cause appropriate response, change over, and alarm.

M. Upon initial system power up or system power restoration, all systems shall be in a fail-safe mode.

N. Provide rapid shutdown and emergency shutdown of equipment.

O. Make appropriate adjustments to control systems for areas where actual Contractor supplied equipment and installation varies from information included in the Contract Documents.

P. Monitoring and Alarming:

1. Where monitoring or alarming are required, at minimum, provide the following functionality. This does not preclude additional functionality required by other requirements in these specifications or required system functionality:

a. Monitoring: Display information received from end devices on graphic display. Display information in units of process measurement where applicable.

Revised - 25 15 11 - 21

b. Alarming: Provide alarms for levels that would indicate pre-trip and trip conditions in the process system, i.e., include Low, Low-Low, High, and High-High alarm conditions as applicable.

Q. Monitor and provide alarming for all instruments and devices shown interfacing with the SCADA System on supplied Piping and Instrumentation Diagram drawings, schematic and connections diagrams, and where Specification’s reference interfaces with PLCs or control systems and the following additional equipment:

1. Status alarms for control system equipment.

2. Status alarms for monitored electrical distribution system equipment and UPSs.

R. Pump Control:

1. Utilize lead-lag or lead-standby pump operation where applicable:

a. Allow operator to set which pumps shall operate as lead and lag/standby pump.

b. Transition pumps between lead and lag/standby pump assignment at operator settable time period, to allow equal wear on pumps.

c. Where lead pump is locked out, or otherwise set in Manual or Out of Service in the SCADA System, the system shall automatically transition to the alternate pump.

S. Valve Control:

1. Display valve full-open and full-closed status on graphic displays and as valve percent open where applicable.

2. Manual operation with ability for operator to manually operate each valve to full-open and full-closed.