W912P5-16-B-0005_AppA-03.pdf

Operations and Maintenance Manual

Chickamauga Lock Cofferdam Instrumentation

Chattanooga, Tennessee IFB No. W912P5-06-C-0009

June 3, 2011

Prepared for:

C.J. Mahan Construction Company 3400 Southwest Blvd.

Grove City, Ohio 43123

Prepared by:

DATE

I

AQUATERRA FILE No. 3407067.003

Terracon · 51 Lost Mound Drive, Ste 135 ·Chattanooga, TN 37406 Tel. 423.499.6111 · Fax 423.499.8099 www.terracon.com

Operations and Maintenance Manual Chickamauga Lock Cofferdam Instrumentation Chattanooga, Tennessee

TABLE OF CONTENTS

1.0 GENERAL INFORMATION

2.0 PIEZOMETERS

2.1 General Layout

2.2 Piezometer Equipment

2.3 Instrument Installation

2.3 Instrument Operation and Maintenance

3.0 INCLINOMETERS

3.1 General Layout

3.2 Instrument Equipment

3.3 Instrument Operation and Maintenance

4.0 PRESSURE CELLS ..................................................................... ~ .. 8

4. 1 General Layout

4.2 Instrument Equipment

4.3 Instrument Operation and Maintenance

5.0 AUTOMATED DATA ACQUISITION SYSTEM (ADAS)

5.1 General Layout

6.2 Automated Data Acquisition System Preparation

6.3 Automated Data Acquisition System Wiring Diagrams

6.4 Network Layout

6.5 Automated Data Management

6.6 System Scan Times and FTP Scheduler

6. 7 Sensor Replacement and Calibration Constants

6.7 ATLAS Operation

6.8 Anticipated Maintenance

6. 9 System Designer Contacts

Chickamauga Lock Cofferdam Instrumentation Chattanooga, Tennessee

1.0 GENERAL INFORMATION

The construction of the cofferdam is broken into two sections, cellular and segmental. This instrumentation program consists of an array of alignment pins, inclinometers, piezometers, and pressure cells to monitor movements of the cofferdam, water levels within and below the cofferdam, and pressures below the cofferdam. The majority of the instruments are automated with the use of data logging systems to allow for near real-time monitoring through web-based applications. Alarms may be set by authorized personnel in the web based system.

This document provides details of the system layout, methodology for maintaining the system, instrumentation hardware, data reduction, and data reporting. These documents also include shop drawings, installation and operation manuals, and handling and storage methods from the manufacturer of the system components. Each component of the system is identified by the manufacturer's stock numbers and standard nomenclature. This document and drawings also highlight any planned deviations from the project plans and specifications. Each section of this document is broken into the different components and specification sections of the instrumentation system.

2.0 PIEZOMETERS

2.1 General Layout

Per contract drawings 61W860-1 and 68W500-1 through 68W500-14, eleven (11) automated, nested piezometers and one (1) manually read piezometer will be installed in the cellular portions of the cofferdam. Per the RFP and the RFP summary document, one (1) nested piezometer in the cell C-48 will be added and six (6) manually read piezometers - two (2) in A 16, two (2) in C28, one (1) in C32, and one (1) in C34.

To automatically facilitate the measurement of the surface water elevation outside the cofferdam, we propose to add an automated open standpipe piezometer to the outside of cell C-22. Piezometer P-RLl-C22 will allow for the automated data system to chart the river level versus the piezometer pressures.

The locations of each of the instruments may be seen in the companion As-built, Installation Record Manual drawing number 4.

2.2 Piezometer Equipment

For installation and operation of the piezometers, the equipment list includes the following:

• Slope Indicator Vibrating Wire Piezometer - Stock Number 52611020. Due to the varying required cable lengths, each piezometer will be ordered individually with specified cable lengths. This will allow the factory to calibrate the instrument. Cable lengths are provided on Piezometer Shop Drawing 3. Each instrument's cable will be marked from the factory with the name of the instrument from the contract drawing and serial number. Additional product information is provided in Appendix A. Each VW piezometer will be provided with a calibration report from the factory. An example of the calibration report is provided in Appendix A.

3407067.003

Chickamauga Lock Instrumentation Chattanooga, Tennessee

• Slope Indicator Multi-Level Housing - Stock Number 52611100. The multi-level housings will allow for the nested piezometers to be installed in a single borehole.

• Slope Indicator Vibrating Wire Data Recorder - Stock Number 52613500. The vibrating wire data recorder will be required to complete performance checks prior to installation. Each VW data recorder will be provided with a calibration report. An example is provided in Appendix A.

• Slope Indicator Vibrating Water Level Indicator - Stock Number 51690015. The water level indicator capable of reading to the nearest 0.01 ft will be used to manually read open standpipe piezometers.

2.3 Instrument Installation

Three types of installation methods and piezometers are utilized for the cofferdam project.

1) Fully Grouted Nested VW - Automated

2) Open Standpipe with VW Sensor - Automated

3) Open Standpipe - Manual Read

Details of each installation may be observed in the installation records.

2.3 Instrument Operation and Maintenance

1) Fully Grouted Nested VW - Automated

These instruments are fully grouted at the installation elevations. These sensors are non replaceable with additional drilling. To protect the sensors from transient or stray voltages, transient protection modules are located at the top of the borehole. Each individual sensor has a wire that enters into the junction box and connects to a separate transient protection module for each sensor. A multi-pair cable then connects the transient protection modules to the data logger.

The below figure provides a wiring diagram inside each data logger. In the event of a lightning strike or high transient voltage occurrence, the transient modules may be triggered requiring replacement. These modules are available through the Slope Indicator Company (1425-493-6200), part no. 52612520. Little to no maintenance is otherwise required.

Chattanooga, Tennessee

TO DATA ACQUISITION

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SIGNAL CABLE

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These instruments are VW sensors installed in open standpipes. This installation method is limited to the segmental portion of the cofferdam and the river level and cofferdam water elevation sensors. These sensors are replaceable by removing the sensor un-wiring from the data logger, (each data logger has wiring diagram inside the box). In the event that sensor malfunctions or is damage due to transient voltages, remove the existing sensor and measure the cable length. Replacement sensors may be ordered with the custom cable length with the above part number reference. The replacement installation procedure should follow the manufacturers' procedure as found in the attached CD.

Following replacement of a sensor, the calibration constants will need to be updated in the data logger program. Please refer to Section 5.0 for instructions.

3407067. 003

Chattanooga, Tennessee

3) Open Standpipe - Manual Read

These instruments are open standpipes. The water level in the monitoring well will be determined by using an electric water level indicator. The operator will lower the water level indicator probe down the open standpipe piezometer until the led illuminates and the beeper sounds. The operator will then read and record the measurement from the depth marked cable. The depth to water as measured will be recorded to the top of casing elevation to obtain a depth to water and water elevation.

3.0 INCLINOMETERS

3.1 Generallayout

Per contract drawings 61W860-1 and 68W500-1 through 68W500-14, six (6) automated, single level, in-place inclinometers and five (5) automated, dual level, in-place inclinometers have been installed within the coffer cells.

Per contract drawings 61W860-11 and 61W860-12, four (4) automated dual monitoring span in-place inclinometers and three (3) automated monitoring span in-place inclinometers have been installed in the segmental portion of the cofferdam.

The locations of each of the instruments may be seen in the companion As-built, Installation Record Manual drawing number 4.

3.2 Instrument Equipment

• Slope Indicator MEMS Biaxial IPI Sensors - Stock Number 57804622L. Due to the varying required cable lengths, each inclinometer is ordered individually with specified cable lengths. This will allow the factory to calibrate the instrument. Associated parts such as wheels, tubes, jumper cables, and suspension kits can be reused as necessary.

• Slope Indicator Digitilt Inclinometer Probe and Readout- Stock Number 50601002. The digitilt inclinometer probe is a traveling inclinometer probe and readout for taking manual readings.

• Slope Indicator EL Data Recorder - Stock Number 56813500. The EL Data Recorder will be used in performing acceptance tests for in-place inclinometers, taking base line readings, and initially nulling each in-place inclinometer. The EL Data Recorder will be provided with a factory calibration report.

• Slope Indicator Shear Wire Inclinometer Casing - Stock Number 51160210 and 51160211. Shear wire inclinometer casing will be ordered in 10 and 5 foot lengths.

3.3 Instrument Operation and Maintenance

The measurements of the manually read inclinometers will be completed by using the Digitilt Inclinometer Probe. The operator will lower the travelling inclinometer probe into the casing with the fixed wheel in the groove that is perpendicular to the inside of the cofferdam. This will make the positive axis to the inside of the cofferdam. After the probe is at the bottom of the inclinometer casing, the probe will be drawn up in two-foot intervals, halting to take measurements. This will be completed twice for this orientation and twice with the probe rotated 90 degrees from the previous orientation. The fixed wheel will be placed in the

Chattanooga, Tennessee groove 90 degrees clockwise from the previous position. The data from the digitilt will be downloaded from the readout to the computer for processing. The data will be analyzed in the DMM Win software for plotting of the inclinometer casing movement with respect to the axis measured. The reports will be generated plotting cumulative movement in a positive or negative casing direction versus depth. The reports will also show the previous inclinometer tests for movement with respect to time. The displacements will also be corrected for the baseline reading. The automated sensors may also be removed and reading can be taken manually with the traversing probe.

The datamate readout has already been setup with the installations and depths of installations. The operator of the probe can simply select the installation and begin the operations. The operator of the probe should be fully trained in the operation of the probe prior to any testing and false movements can be obtained if the probe is incorrectly operated.

The project DMMWin files are also provided on CD within this manual.

The traversing probe should be properly inspected and maintained before and after each use.

Probe Inspection

3407067.003

Part

Wheel yoke

Wheel yoke

Wheel

Wheel

Body screws

Connector keyways

Connector 0-rlng

Connector pins

What to check for

Side to side movement

Yoke does not return to fully extended position.

Side to side movement

Does not turn freely

Loose screws, wobble in body, loose bumper

Wear, corrosion

Flattened, split

Bent pins

Remedy

Check pivot pin, which looks like screw. If pivot pin has been turned too far, it may spread the wheel yoke. Turn the pivot pin counter-clockwise to see if mov~ment dis-appears. If movement persists, replace the nylon spacers or the entire wheel assembly. The wheel assembly can be replaced by the user: kit number 50302555.

If yoke is dirty, clean it. If problem persists, spring may be broken or weak. Replace spring and roll pins or replace wheel assembly using kit 50302555.

Bad bearing. Replace wheel assembly.

Lubricate. If movement is still bad, replace wheel assem-bly.

Tighten screws. (Do not tighten pivot pin).

Worn keyway may degrade 0-ring seal. Learn how to connect cable without "hunting:' Remove corrosion and change practice - allow connector to dry after use.

Replace If flattened or split.

Bent pins are easily broken when straightened. Replace-ment of connector requires recuperation of probe (expensive). Change connection practice - no hunting.

Chattanooga, Tennessee

Probe Maintenance

Moisture Management Wipe off the control cable and probe when you finish the day's final

Control Cable Inspection

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Wheels

0-Ring

Connectors

Storage

Part

Cable

Cable

Connector key

Connector rubber insert

Connector for Indicator (Lerno)

Connector for Probe survey, then wipe off the probe. Do not store wet cloth with the probe.

Allow the connector to dry thoroughly: remove connector cap and allow connector to air-dry for a number of hours. Lubricate the wheels. This helps displace moisture.

Lubricate the wheels by spraying a small amount of lubricant or plac- Ing drops of oil on both sides of the wheel bearings.

Lubricate regularly with 0-ring lube or silicone based grease. Do not use WD-40 or any other lubricant spray that contains chlorinated sol-vents.

Clean connectors as necessary. Use a slim cotton swab moistened with alcohol. Be careful not to bend pins.

Do not use electrical contact cleaners, especlally sprays. Solvents In these products will attack the neoprene Inside the connectors. When attacked, the neoprene swells and reduces the effectiveness of the 0-ring seal.

Store probe in dry place. Be sure that the box is dry, the wheels are oiled, the connector is dry.

If probe is to be stored for an extended period, stand it vertically.

What to check for Remedy

Continuity If you have intermittentfailures, perform continuity tests.

If a wire fails continuity test, you can check the Lerno con-nector or return cable for servicing or replacement.

Twists, worn markings, Twists Indicate poor coiling technique. Change practice:

kinks, gouges use cable reel, figure-8 coils, or over-under coils.

Worn markings: user is dragging cable over the edge of the casing. Change practice - but must keep consistent depths.

Kinks: if kinks do not straighten, there is probably internal damage and likelihood of intermittent reading failures. If any deep gouges, water can enter cable. In both cases, bad section of cable must be removed, either by shorten- Ing the cable or replacing the cable.

Wear, corrosion Change connection practice- no hunting. Remove corro-sion and change practice - allow connector to dry after use.

Swelling, poor seal Rubber swells when attacked by WD-40 or contact clean-ers. Swelling may prevent good seal and allow water to enter connector.

Return for service if sealing is compromised.

Corrosion, bad connec- Perform continuity check first. Then check this connector ti on. to eliminate as possible source of intermittent failures.

Unscrew bottom nut, being careful not to twist cable.

Slide shell off the end of the cable. Slide strain relief collet out of the way and inspect connections. Twist and pull wires gently. Good connections will not break. Repair as necessary.

Check 0-ring Do not disassemble this connector. Requires about two hours and a pressure test to reassemble.

Chattanooga, Tennessee Page 7of17

Control Cable Maintenance

Moisture Management Wipe off the control cable as you draw the probe up on the last run of the day.

When you return to the office, remove connector caps and allow connectors to air-dry for a number of hours.

Cable When necessary, rinse cable (but not connectors) in clean water or wash the cable in a laboratory-grade detergent, such as Liquinox.

Do not use solvents to clean the cable.

Connectors If it Is necessary to clean the connector, use a cotton swab moistened with alcohol. Sockets can be cleaned with a brush.

Do not use spray lubricants or electric contact cleaners. Solvents contained In such products will attack the neoprene Inserts In the connectors.

Storing Control Cable Improper coiling of any electrical cable twists conductors and can cause reli-ability problems. TI1ere are several ways to control twisting:

•Use cable reel with hub diameter of at least 200rnm or 8~

• Coil cable in a figure-a.

•Coil cable using over-under loops (2-foot diameter loops).

For the datamate readout additional inspection and maintenance is required.

Inspection Part What to check for Remedy

Desiccant Check humidity under If humidity exceeds 75%, replace or recharge utilities menu. desiccant.

Batteries Check main battery and Main battery can be recharged. If battery does not hold Memory keep alive charge, battery can be replaced. Lithium backup battery power under utilities is good for 7 to 10 years if main battery keeps charge.

menu. Return for servicing if memory power is bad.

Connectors Dirt, bent pins, o-ring Clean with alcohol moistened swab. Note that connec-tors are "water proof" only when capped or when con-nector is plugged in.

SelfTest Error A input Bad signal input. Return for servicing. A value is dis- Error B input played, but Is not useful.

Error+ 12volt ±12V sensor power. Disconnect control cable and probe.

Error -12volt Try again. If error goes away, problem could be in probe or cable. Connect cable only. If no error, then probe Is the problem. This error could also be caused by discharged battery. Try recharging battery first. If error persists, some component must be returned for servicing.

Error battery Main battery is low. Try recharging. If error persists, replace battery.

Error+3v pwr Memory keep alive power is bad. Retrieve any data before switching off, then return for service.

Error temp Operating temperature range exceeded. Either below-20 or above 60C.

Error humidity Humidity above 80%. Replace desiccant.

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Maintenance Battery

Desiccant

Connector sockets

Recharge battery after every use. Charge at least two hours for every hour of use. Charging overnight is common practice. Do not charge longer than 72 hours. Longer charge time may damage the battery. A new, recharged battery will show 6.6V or higher.

The DataMate displays a low battery warning when voltage drops to 5.5 volts. Turn off the DataMate when the warning appears and then recharge as soon as possible. Deep dis-charge of the main battery can reduce its performance and shorten its life.

Check humidity under utilities menu. If humidity exceeds 75%, replace desiccant.

If it is necessary to clean the connector, use a small brush or a slim cotton swab. Do not use spray lubricants or electric con-tact cleaners. Solvents contained in such products will attack the neoprene inserts in the connectors.

Training is available through Slope Indicator or can be obtained onsite by contacting Scottie L.

Barrentine, P.E. at 423-255-2524.

Tlie automated IPI sensors are replaceable in the event of malfunctioning sensors. In the event that sensor malfunctions or is damage due to transient voltages, remove the existing sensor and measure the cable length. Replacement sensors may be ordered with the custom cable length with the above part number reference. The removal and replacement installation procedure should follow the manufacturers' procedure as found in the attached

CD.

Following replacement of a sensor, the calibration constants will need to be updated in the data logger program. Please refer to Section 5.0 for instructions.

4.0 PRESSURE CELLS

4.1 General Layout

Per contract drawings 61W860-11 and 61W860-12 and the RFP, six (6) pressure cells have been installed in the segmental portion of the cofferdam. The pressure cells for the segmental portion of the cofferdam will be installed at the locations shown on the above referenced contract drawings.

4.2 Instrument Equipment

• Geokon Contact Pressure Cell - Stock Number 4810. The signal cable used for the instruments is Geokon model number 02-500PE1. This cable contains four, 22-gauge copper conductors in 10-mil polypropylene insulation. The cable jacket consists of a gray vinyl inside, served steel armor with a bitumen filler and black polyethylene.

Chattanooga, Tennessee

After completion of the performance check, each instrument will be stored in a secure, dry storage area until time for installation. The storage area will prevent the entry of sunlight and rodents and will be protect from extreme temperature differentials.

4.3 Instrument Operation and Maintenance

The pressure cells are bolted to the rock bottom by divers prior to placement of concrete in the segmental portions of the concrete. There is no replacement or maintenance required for these instruments.

5.0 AUTOMATED DATA ACQUISITION SYSTEM (ADAS)

5.1 General Layout

Four (4) data logger control panels (DLCP) have been installed on the cofferdam for automated monitoring of the instruments. The DLCPs are to be installed in segment L 10, L 17, C-33, and C-41.

The data is transmitted from each of the DLCPs by RF Radio Frequency to a RF base station at a location to be chosen by USACE. The base station will need to be placed in a secure location that will remain for the duration of the construction period. Suggested locations may be the USACE job trailer or the lockmaster building. The RF base station will be connected to a dedicated personal computer (PC) with a secure internet connection.

Prior to installation, the location of each DLCP and the RF base statipn will be verified by the USACE and C.J. Mahan.

6.2 Automated Data Acquisition System Preparation

For installation of the automated data acquisition system, the equipment list includes the following: Campbell Scientific is the equipment supplier and manufacturer (1-435-227-9000)

• CR1000 Measurement & Control Module The CR1000 measurement and control module will be the hardware that triggers and records the instrumentation scans.

• PS100 12V Power Supply. The PS100 12V power supply is a battery system that provides power to the data logger unit. An AC adapter will be used to maintain charge on the battery system. ·

• AVW 200-Channel VW Interface-Provides interface between vibrating wire instruments and the control module.

• ELSC Relay Terminal Strip Provide interface between EL sensors and the control module.

• AM16/32 Relay Multiplexer Increases the number of instruments that can be controled by a data logger unit.

• LoggerNet Support Software Software provides PC interface with the control module to program trigger times, calibration constants, etc.

• RF450 Spread Spectrum Radio RF radio to provide transmission of data from each DLCP to the dedicated PC onshore.

Chattanooga, Tennessee Page 10of17

• 9dBd Yagi Antenna for FR401 Antenna for RF radio to provide additional signal distance and strength.

• ENC 16/ 18: 16 x 18 inch Enclosure- Watertight enclosure for mounting of DLCP equipment and mounting on the electrical panels.

The above equipment list is needed for each DLCP.

6.3 Automated Data Acquisition System Wiring Diagrams

Each component within the data logger is replaceable. The below figures provide wmng diagrams for each data logger. Wiring diagrams are also located within each data logger box.

In the event of hardware replacement for a CR1000 or RF450 radio, the hardware must be configured by the Loggernet Software installed on the PC located inside the USACE office trailer. The configurations can be uploaded by network planner module inside the Loggernet program and the provided cable.

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6.4 Network Layout

The data logger system communicates to one another via radios utilizing PakBus addressing and signal hopping. The system is configured as a master to master/slave network. Data loggers DLCP-L10, DLCP-L17, DLCP-C33, and DLCP-C41 are each polled at regular intervals by the Loggernet software running on the PC located in the server room inside the USACE office trailer. The radio inside DLCP-L 17 is programmed at the master /slave and repeats signals from the other 3 data loggers. The below figure provides a representation of the network.

Chattanooga, Tennessee

--DLCP..C33

6.5 Automated Data Management

.iL.n.u r"" tllll LoggerNet_ 1

-DLCP..LlO

--DLCP..C41

Data collected from the dataloggers are held in three levels of management. Recently collected data is collected and held by the dataloggers until the Loggernet calls and poles each datalogger. The data is held in the Loggernet files on the PC inside the server room at the USACE office trailer. A program called FTP Scheduler automatically uploads the .dat files to the SQL server at atlasmonitoring.com. Slope Indicator Inc. is the host of the ATLAS monitoring system. Currently USACE personnel with administrator rights to the online system include Brad Long and Bill Walker of the Nashville district.

The .dat files from the dataloggers can be viewed by Excel in the .csv format, viewed by the Loggernet program, or by logging onto www.atlasmonitoring.com.

Chattanooga, Tennessee

At any point, the data loggers can be manually read and monitored by the connecting the PC to the CR1000 in the data logger via the RS-232 port and supplied cable. Engineering units of the readings may be obtained by directly connecting to the data logger.

6.6 System Scan Times and FTP Scheduler

The dedicated computer located onsite has the capabilities of controlling and changing the settings of the DLCPs through the LoggerNet software by Campbell Scientific. The DLCPs are currently programmed for to scan and record data from the instruments every 1 hr. A pre written program for each DLCP is provided on the CD attached. The program can be sent via the radio connection from the PC by utilizing the connect module in the Loggernet software.

RELOADING THE PROGRAM WILL DELETE THE READINGS.

FTP Scheduler should continuously run on the PC. The settings within the program should look like be the following.

Session Name: Chickamauga Lock FTP Server: ftp.atlasmonitoring.com FTP Port: 21 Login: aqeftp Password: H*2x%v97nU Local Directory: **this will be the directory to the files** Local Files: * .dat FTP Directory: /00001 /import/

6. 7 Sensor Replacement and Calibration Constants

If a sensor is required to be replaced, the calibration constant will be required to be replaced in the .cr1000 programs. To replace the calibration constants if a sensor is changed, open the connect module inside the Loggernet program, connect and retrieve the program from the DLCP with the sensor change. Open the retrieved program with the CRBasic editor. The constants are declared at the beginning of the program by the serial numbers. Find the serial number of the sensor that is being replaced and type in the new constants right of the equal sign. DO NOT CHANGE THE ORDER OR THE CONSTANT DECLARATION as the calculations will change. Placing constants within the ATLAS Monitoring program will not change the calculations. The advantage of programming constants in the DLCP is the ability to have engineering units of the measurements in real time if the internet or radio connections are lost.

Chattanooga, Tennessee Page 16of17

6. 7 ATLAS Operation

The system allows for three different levels of users to access the system. Guest level users will have the ability to view data, make a one-time graph, view alarms, and manage their own password. User level personnel will have all of the guest ability but can confirm alarms, download data, and enter manually collected data. Administrator level will be for the top level users. The administrator level should be reserved for personnel who have intimate knowledge of the software and have been properly trained by the manufacturer representative. Administrators will have the abilities to create new users, add sensors, set up trend plots, set alarm values, create reports, archive data, and edit data.

The ATLAS system can be configured by any declared administrator of the system. The system can be configured to automatically provide daily reports by email to personnel specified by USACE. Each report can contain a cover page, tables of data for the day, alarm reports, sensor remarks, and daily construction activity by the contractor.

The system can also be configured to automatically provide monthly reports by email to personnel specified by USACE. Each report will contain a cover page, alarm tables, sensor remarks, and instrument data presented in tabular and graphical format. Raw data from the server can be downloaded to a CD each month. The declared administrator is required to add additional personnel to have access to the system.

The front end screen for the ATLAS system is a plan view of the cofferdam with the location of every instrument represented by a box. If several instruments are placed close together, such as nested piezometers, the boxes will collapse into one another at that location. If the user rolls over the box, the boxes will separate for each instrument. Alarm conditions will also be represented in the plan view by coloring the boxes green, yellow, or red. If an instrument does have an alarm condition, then the boxes will not collapse together. The plan view will be refreshed automatically as new data enters the system from the instruments. The administrator of the system may define trend plots that can be accessed by clicking on the measurement values for instruments in the box. The user will be able to select from the different trend plots set up by the administrator. The user of the system will also be able to download data into a Microsoft Excel format for additional analysis at anytime.

6.8 Anticipated Maintenance

Anticipated maintenance of the system includes replacement of desiccant within the DLCP enclosure at least once per year. The DLCP also have a battery backup system with 12V deep cycle marine batteries. These batteries should be tested annually and replaced at least every five (5) years.

POWERFAILURE INSIDE THE USACE TRAILER WILL CAUSE THE PC TO STOP POLLING THE

LOGGERS AND WILL STOP UPLOADING DATA TO THE INTERNET. THE COMPUTER WILL BE

REQUIRED TO BE TURNED ON AFTER A POWER FAILURE. AN UNINTERRUPTABLE POWER SUPPLY

TO THE PC SHOULD BE CONSIDERED. THE COMPUTER IS PROGRAMMED FOR THE REQUIRED

PROGRAMS TO RESTART ONCE THE PC IS TURNED BACK ON.

If the system is to be mothballed for a significant period of time, the system cannot be shut down just by the PC. The following mothballing procedure should be used.

$ t rt

Chattanooga, Tennessee Page 17of17

1) Turn each DLCP off by switching the power supply I charger switch (CH100) to the off procedure.

2) Leave the AC power supply plugged in as the batteries will discharge without the trickle charge

3) Add extra desiccant to the DLCP enclosure prior to closing. Add padlock to enclosure to prevent tampering.

4) Turn off radio at the PC inside the server room at the USACE office.

5) Turn off the PC.

To bring the system back online, reverse the process.

6. 9 System Designer Contacts

Installation Company:

System Engineer:

ATLAS Monitoring:

3407067. 003

Aquaterra Engineering, LLC a TERRACON Company 51 Lost Mound Drive, Ste 135 Chattanooga, TN 37406 423-499-6111 Contact: Derek L. Hodnett, P.E.

Scottie L. Barrentine, P.E.

423-255-2524

Slope Indicator Company Rhonda Benbrooks 425-493-6249

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1'· L· . ...- I .-·;:;~----:.:, ... -··~·-. ·-.. i -·· .·.~··. .·,· -~. , "' ,. . . . · .. · .. . - _ ,_

.;;-:· ··_c,_;;:-·:·c.....i -c__ • ' I • ;. • ••• , ,.

\.!L,_E~

EC , \::

~(; 1' ,J

-- SEE NOTE 5 (TYP)

(~49

. At.o-' . , , -· -· o __,.. " ,_ ·- =--=-_,'-7 --4:-= __ =.; ' =

:/·-~~\ c

2.:;(f' : ' ""' ' ' ~ - "'" '

DLCP-L 10 LOGGER #1

PC-2

PZ-L4

M :-7

A1." /

,{ • ,, v : ""' ,.; ·~ -····'

PZM-A16B ;' x .1

~-\ •". I ./

· ~ /;:·· .~~.~ A10 , -.,v

/I' ' . , / ·. ' ' ,,:/E ·, .- . ' INP:-c2s··

' ~ .(~_"';_ ~v \~ NPZ-C25

\ iC26 ( PZM-A16A

' 0 / . .

.. _,\· - ·w<' ', NPZ-C27

. , INP-C27

"-. C27 ;

A~8

Cl t;;

./.rPZM-C28B

7 • C28 ~-'. ~'NPM-C29

I C•' i, .

BARO

(..J

"' t;;

Y

/AD ·.

PZM-C28A . -- .- f: . ·-. . ' \ <. .. 'NP-C31

·, .•' C29. ·- .• , 0 - , NPZ'°J'~

' .· ' ' : -. / ... ,/ ,o.:;c ,J" .. "c ··., . ., . ;:PZM-C32

.. -. .. ... -~ . ,. -.. I -. . ~EC - / .. ~

; C3 ,, ·.- " ' :'-- ;o,:: . " _.. 0 ,. , ·•- ' - " --'- ' .. . _, ····-·--' " ~

Al~ C32 AZ2 C33 C31

/·- f-21 .', INSTRUMENTATION PLAN LEGEND

- ec - DIRECT BURIED CONDUIT

- sc -

- EC -

x

D

SURFACE-MOUNTED CONDUIT, RGS

EMBEDDED CONDUIT

INCLINOMETER

480V POWER PANELS

P!EZOMETER

MANUAL PIEZOMETER

NESTED PIEZOMETER

PRESSURE CELL

OATALOGGER CONTROL PANEL

BAROMETER

MANUAL INCLINOMETER PROBE

ABBREVIATIONS

SARO

DLCP

'p

'"p

INPM

NPZ

PC

pp

PVC

PZ

PZM

RGS

BAROMET~ .-l

DATALOGGER CONTROL PANEL

INSTRUMENT PANEL

INCLINOMETER PROBE

MANUAL INCLINOMETER PROBE

NESTED PlEZOMETER

PRESSURE CELL

POWER PANEL

POL YV!NYL CHLORIDE

PIEZOMETER

MANUAL PIEZOMETER

RIGID GALVANIZED STEEL

" 0 c~ • ~ "' ii)

NPZ-C33

INP-C33

PZ-L15 PZ·L 13

Q

"' tJ

3 DATA LOGGER #

NPZ-C35

DCLP-CJ Ji r PZM-CJ4 'NP'°35

,,i;" ~ :; -- ,c;__:: " . . . , . - ·- ---~ C3

A '. /!"'" c•u·1· ' •· I •• '""~ .,, 1· .. ' .. ,~_} - ' A2·'i

/ Al.0 '· ./

DATA

LOGGER

DLCP-LlO

DATA

LOGGER

DLCP-C33

PC-3

Q

C)

PZ·L 10

c

CJ • M

DCLP-C41 DA

Q

' N

TALOGGER#4

a

8 • 0 t;;

NPZ-C37 INP-C39 SEE NOTE

NPZ-C43 NPZ-C41 INPM-C42 (TYP) ·~ - \ ·-,. , , , " , ·-'· ·.- ·- ·<C"""

" ' / / . ti

'NP-C4t ~ £ ----~·~"_. _._J). __ .1 ' .. ,, "" ,, '" " , •· ,,. ,,, ~· . "' ' ,, . ~ ' "

SEE NOTE 7 (TYP)

C36

MUX

UNIT

MUX A

MUX B

MUX

UNIT

MUXA

MUXB

A •• , ,.

Ai:t'l C3?

MUX

CHANNEL

SENSOR

Sensor Serial

Number

ESTIMATED

TOP OF ROCK

ELEVATION

(msl)

INSTRUMENT! MONITORING

ELEVATION SPAN (msl) {msl)

CH 1 I INP·L4-1 I 14424 I 618 I 613 613-623

CH 2 I JNP-L4-2 I 14425 I 618 I 600 600-610

CH 3 I INP-L9-1 I 14426 I 614 I 609 609-619

CH 4 I INP-L9-2 I 14427 I 614 I 600 600-610

CHS I INP-Ll0-1 I 14428 I 615 I 610 610-620

CH 6 I INP-ll0-2 I 14429 I 615 I 600 600-610

CH 7 I INP-l13-1 I 14430 I 616 I 611 611-621

CH 8 I INP-L13-2 I 14431 I 617 I 600 600-610

CH 1 I PZ-L3 09-2948 I 618 I 591

CH 2 I PZ-L4 I 09-2949 I 621 I 586

CH 3 I PZ-L6 I 09-2950 I 619 I 591

CH4 I PZ-L8 I 09-2951 I 618 I 591

,_C~H_S~+-~P~Z~-l=1~0~-+--0=9~-2=9~S2~--+-~61~4~-+-~S88~.~-1--~---

CH 6 PZ-L12 09-2953 624 598

CH 7 I PZ-L13 I 09-2954 I 615 I 587

CH 8 I PC-1 I 08-9765 I 621 I 621

CH 9 I PC-2 I 08-11671 I 621 l 621

CH 10 I PC-3 I 08·25480 I 617 I 617

CH 11 I PC-4 I 08-25481 I 617 I 617

MUX

CHANNEL

SENSOR

Se nsor Serial

Number

ESTIMATED

TOP OF ROCK

ELEVATION

(msl)

INSTRUMENT! M ONITORING

ELEVATION SPAN (msl) (msl)

CH 1 JNP-C29 14432 618 613 I 613-623

CH2 INP-C31-1 14433 622 617 I 617-627

CH3 INP-C31-2 14434 G22 607 607-617

CH4 INP-C33-1 14435 G20 G19 619-629

CH S IN P-C33-2 14436 620 609 609-619

CHG INP-C35-1 14437 G22 G19 619-629

CH7 INP-C35-2 14438 G22 609 609-619

CH 1 NPZ-C29-1 09-2959 620 G28

CH 2 NPZ-C29-2 09-2960 G20 G13

CH 3 NPZ-C29-3 09-2961 620 S90

CH4 NPZ-C31-1 09-2962 617 G32

CHS NPZ-C31-2 09-2963 G17 617

CHG NPZ-C31-3 09-2964 617 S80

CH 7 NPZ-C33-1 09-2965 G22 G20

CH8 NPZ-C33-2 09-2966 622 600

CH9 NPZ-C33-3 09-2967 G22 S80

CH 10 NPZ-C35-1 09-2968 G21 632

CH 11 NPZ-C35-2 09-2969 621 G12

CH 12 NPZ-C35-3 09-2970 G21 S80

r/~

60 0 50 100

~---------~- I I

SCALE IN FEET

DATA

LOGGER

DLCP-Ll7

DATA

LOGGER

DLCP-C41

MUX

UNIT

MUXA

MUXB

MUX

UNIT

MUXA

MUXB

MUX

CHANNEL

CH 1

CH2

CH3

CH4

CHS

CHG

CH 7

CH8

CH9

CH 10

CH 11

CH 12

CH 13

CH 1

CH 2

CH 3

CH4

CHS

CH 6

CH 7

CH8

CH9

CH 10

CH 11

CH 12

CH 13

CH 14

CH 15

CH 16

MUX

CHANNEL

CH 1

CH 2

CH 3

CH4

CHS

CH 1

CH 2

CH 3

CH4

CHS

CH 6

CH 7

CH 8

CH9

CH 10

CH 11

CH 12

CH 13

CH 14

.... I

" g- L. ·~-s;;

I - - I

.--1 -

I I

-r; - I I J -

.Ll --

1 _ ·-·· I j_

I

I

I

. ~-- :C48~_/PP2

- Ee - ... i

1 I 11 ' t-

SENSOR

INP-L15-1

INP-LlS-2

INP-L15-3

INP-L16-1

INP-L16-2

INP-L16-3

INP-L17-1

lNP-L17-2

INP- l 17-3 lNP·C23

!NP-C25

INP·C27-1

INP-C27-2

PZ-LlS

PZ-L16

PZ-L17

NPZ-C23-1

NPZ-C23-2

NPZ-C23-3

NPZ-C25- l

NPZ-C25-2

NPZ-C25-3

NPZ-C27-1

NPZ-C27-2

NPZ-C27-3

PZ-Rll-C22

Cofferdam

PC-5

PC-6

L

' ·- I

I. ·-·-

Sensor Serial

Number

14439

14440 14441

14442

14443

14444 1444S

1444G

14447

14448

14449

14460

14451

09-2955

09-2956

09-2957

09-2971

09-2972

09-2973

10-4339

10-4340

10-4341

09-2977

09-2978

09-2979

09-2958

09-2974

912436

912435

I

ESTIMATED

TOP OF ROCK

ELEVATION

(msl)

G12

G12

G12

G13

G13

G13

G14

G22

G12

G12

G18

G22

G22

G22

G22

G22

G18

B. ALL CONDUIT IS PVC COATED RGS UNLESS OTHERWISE NOTED.

C. GENERAL CONTRACTOR SHALL INSTALL A DEOICATEO CONDUIT FOR EACH

CELL INCLINOMETER PROBE (lNP)AND NPZ TO THE RESPECTIVE DATALOGGER

CONTROL PANEL (DLCP). CON OU IT SHALL BE SIZED TO ACCOMMODATE

MANUFACTURER'S RECOMMENDED CABLE. BUT NOT BE SMALLER THAN 1".

CABLE SHALL BE PROVIDED AND INSTALLED BY OTHERS.

D. PROVIDE FLEXIBLE CONDUIT CONNECTION FOR TRANSITION FROM CONDUIT

ON THE LOCK DAM TO UNDERGROUND OR EMBEDDED CONDUIT ON THE

COFFERDAM.

E. CONTRACTOR SHALL INSTALL DATALOGGER CONTROL PANEL. PANEL SHALL

CONSIST OF POWER DISCONNECT. DATA LOGGER. SENSOR TERMINAL

BLOCKS ANO ALL OTHER COMPONENTS REQU IRED TO LOG PROBE DATA.

SENSORS SHALL BE CONNECTED TO CONTROL PANELS AS FOLLOWS:

DATA LOGGER DISTRIBUTION

DLCP-L 10

INP-L4-1

INP-l 4-2

INP-L9-1

INP-L9-2

INP-L10-1

INP-L 10-2

!NP-L 13-1

INP-L 13-2

PZ-L3

PZ-L4

PZ-L6

PZ-L8

PZ-L 10

PZ-L12

PZ-L13

PC-1

PC-2

PC-3

PC-4

DLCP-L 17

!NP-L 15-1

INP-L 15-2

JNP-L 15-3

INP-L 16-1

INP-L 16-2

INP-L 16-3

JNP-L17·1

INP-L17-2

JNP-L17-3

INP-C23

INP-C25

INP-C27-1

INP-C27-2

PZ-L15

PZ-L 16

PZ-L 17

NPZ--C23·1

NPZ-C23-2

NPZ-C23-3

NPZ-C25·1

NPZ-C25-2

NPZ-C25-3

NP…