PICA (California Office)3445 Kashiwa StreetTorrance, CA 90505 1-800-661-0127

Kristopher Embry, Regional Managerkembry@picacorp.comc. 412-999-4783

Who is PICA/Russell NDE?

PICA is a U.S. based subsidiary to Russell NDE in:

➢ Los Angeles / San Antonio / New Orleans / Washington, D.C.

Experience: Over 30 years of R&D and condition assessment.

Leaders in the Industry: Our president, Dave Russell, was one of

the original founders of PPIC (50 yrs exp.). Our Operations

Manager, Ad Shatat, MA in Engineering Physics, is a leader in

adapting RFT for large diameter pipes (25 yrs exp.).

Standards: We have developed NDE standards for ASTM, ASME,

ASNT, EPRI and recently contributed to the AWWA/M77 Manual.

Develop / Manufacture / Deploy / Data Interpretation / Reports

Inspection Solutions

Prescreening:

Free Swimming

Visual:

CCTV & Laser

NDE:

Electromagnetic

Inspection Solutions

Prescreening:

Free Swimming

Pre-Screening Inspection – RECON+

<<<<<<<<2.3”>>>>>>>

Sensors On-Board

• Hydrophone (leak detection)

• Pressure

• Magnetometer

• XYZ (accelerometer and IMU)

• Temperature (not reportable)

Gross Wall Anomalies

RECON+ - Leak Detection

The hydrophone identifies and quantifies a leak’s signature (amplitude

and frequency) and localizes it by combining all sensor data.

RECON+ - Leak Detection

Recent project example: 4.5 miles between access points.

RECON+ - Pressure Log

RECON+ - Pressure Log

RECON+ - Magnetic Log

RECON+ - Magnetic Log

RECON+ gross defect results compared to MFL results

RECON+ - Geolocation (X, Y, Z)

• Accelerometer and Gyroscope on board measure Pitch & Yaw Deflections without need for above ground markers. This is correlated to known locations of construction fittings and client As-built information

• More accurate when mounted on a soft foam pig.

RECON+ - Extraction

Extraction plans and devices

RECON+ - Advantages

Simple!

Fast!

Flexible!

Disruptive!

Inspection Solutions

Visual:

CCTV and Laser

Visual and Laser Scans

• Dedicated potable water equipment.

Visual and Laser Scans

• Laser Profilometry (Triangulation with CCTV)

• Lidar (Ranging)

Visual and Laser Scans

• Spalled liner identification/measurement

• Identify/measurement of ovality and deflection

Inspection Solutions

NDE/NDT:

Electromagnetics

Lines of Magnetic Flux

Field disturbances due to

PipeCrossSection

Probe Travel Direction

local wall loss

Near FieldZone

TransitionZone

RemoteFieldZone

Pipe

Exciter

Energy Flow Path

Receiver

Liner

NDE - Electromagnetic Basics

Where wall is thinner the signal arrives faster and is larger in amplitude

+V

-V

Sig

nal

Am

pli

tud

e [

Vo

lts]

Time →

Exciter Output

Flaw Signal

Signal

Nom Signal

Electromagnetic RFT – Basis of Measurement

22

Electromagnetic Remote Field

SeeSnake Line of Tools

3” to 78” ID Capable

PICA’s NDE - Electromagnetics

Electromagnetic tools were developed to condition assess metallic pipelines and assets.

Two Methods of Data Collection

In-Line Tools External Tools

3”-78” Capable Tools >6” Capable Tools

Typical ‘SeeSnake’ Tool

1. Tethered (dual and single tether)

2. Free Swimming

3. Manned Entry

Types of Tool Deployments

Tethered

Single Tether Connection to Tool

Double Tether Connection to

Tool (at each end)

Range: 6,000’

Maximum bends 270 degrees

Tethered Tool Deployments

Single Tether Inspection

Hydrant Launch Tethered

Single Tether Connection to Tool

Range: 6,000’

Maximum bends 270 degrees

Untethered or ‘Free Swimming’

Full Bore Access Required

No Maximum bends (no capstan effect)

Launch Assembly Required

Range: 20+ Miles

Monitored by on-grade TPM

Untethered Inspection

Typical Pig Launch Assembly

Manned Entry

Tool is pushed/pulled by tech

Often works in conjunction with

tethered deployment

Manned Tool Deployments

Pre-Cleaning – Non-Contact

This pipe is clean enough to inspect!

Ensure Success – Test Disc

Aluminum Body with fingers at tool circumference.

High Resolution Data• Scans every 1/10” over entire

circumference

0.253-inch nominal

0.253-inch nominal

0.222-inch nominal

High Resolution Results

Primary Area at 1982.6:

6”x5” corrosion

area

100% Wall Loss.

Secondary Area:

1” diameter

100% Wall Loss.

6-inches upstream

of the large

corrosion patch

Accuracy Determined

36

• Industry Standard Unity Plot

compares the RFT predicted depth

(vertical axis) to the known or

measured (dig verification UT) depth

(horizontal axis).

• Depth tolerances are +/-20% with

85% confidence, which is comparable

to oil & gas inspection technologies.

• Data in the graph on the right is based

on data for defects at or above the

TOD.

• Defects below the TOD (2” dia x 25%)

are still detected.

External EM RFT ‘Bracelet’ Probe

External EM Validation

Validate findings on-site with a UT gauge.

External Probe Results

How Can PICA Help?

Actionable Data:

Repair? Replace? Where?

Pre-Screening:

Narrow down the areas of concern.

Higher Accuracy:

Locate AND size defects

Family owned, small business.

We’re a SBA standard/SBE.

We are client centric.

We are data diligent.

Case Study – Mount Pleasant, SC

Background:

Mount Pleasant, SC (suburb of Charleston)

Services 70,000 people

~458 miles of wastewater pipe

Average Capacity of 6.35 MGD

Case Study – Mount Pleasant, SC

4,200 feet of DI. Section 1: 2,940; Section 2: 1,35516” DIP: Class 50; .34” WT2 – 45 degree bends; 2 – 22.5 degree bends

Client assumed areas with past failures were in poor condition. Better access was found upstream at Pit 1 in an area with no previous failures, thus that scope was added.

Past Failures

No Past Failures

Case Study – Mount Pleasant, SC

Estimated Replacement Cost: $4 million

Criticality: 25-30% of WW flow runs through this line

Case Study – Mount Pleasant, SC

Case Study – Mount Pleasant, SC

Start – 0 ft End– 4,200 ft550 ft 2,940 ft

Re

mai

nin

g W

all %

The vast majority of defects were found upstream near brackish water at the creek, but had exhibited no past failures.

Case Study – Mount Pleasant, SC

Through-hole indication at 42.12 feet (from start) at the 6:00 position (bottom of pipe)

Case Study – Mount Pleasant, SC

Case Study – Mount Pleasant, SC

Results:

Client replaced first 550 feet and upsized the last 2,000 feet

Cost: $1.5 million

Deferred cost: $2.5 million

Provided a better planning horizon

“So far, in the two condition assessment projects that we have used the SeeSnake, we

have spent less than 5% of the pipe replacement cost using this technology. In

return we have saved at least 65% of the pipe replacement cost by only replacing

and rehabilitating those sections of the pipe that really needed it.”

David Niesse, Engineering Manager, Mount Pleasant Waterworks.

Kris Embry, Regional Manager

e. kembry@picacorp.com

c. 412-999-4783

“Good Decisions Start with Good Information!”

Thank you!

Recent Video – Vallecitos WD, CA

Link to Article/Video Online:https://www.waternewsnetwork.com/new-inspection-tool-aids-vallecitos-pipeline-assessments/

Appendix – Additional Information

Remote Field Testing Characteristics:

RFT is a non-contact technique that relies on time varying EM fields.

RFT technology is thus not limited to collecting a single parameter of information (Amplitude) but additionally collects a time differential element which is used in enhancing the depth calibration of defects.

RFT technology has been in commercial use since the late 1980’s

RFT Technology has been validated by such organizations as the EPA, EPRI, Battelle, and AWWARF.

Industry standards for applying the technology are in place (e.g. ASTM Standard Practice E-2096-00)

Will locate and quantify amount (depth) of missing metal.

Can see through internal liners & deposits.

Sensitive only to the metallic components of the pipe.

Equally sensitive to external or internal corrosion.

Cylinder Information Provided by PICA Inspection Tools

For every defect above the Threshold of Detection:

- Depth

- Length

Upon request, PICA will calculate the safe operating (or

rupture) pressure for the steel shell using either modified

B31G (also known as RSTRENG) or DNV-RP-F101.

Stresses working on the pipe (cylinder).

Inspection speeds of 15ft/min (ideal) up to 60ft/min (maximum).

Defect depth measurements within +/-20%.

Reporting of the axial (in 0.1ft) and circumferential location of wall loss indications.

The tools measure the deflection angle of mitered bends in the line, and distinguish if the bends are up/down (+/- 3 degree pitch) or left/right (+/- 5 degree yaw).

Flagging of pipes with stress loading.

Defects can be sorted on depth or B31G burst pressure calculations.

References back to AGM (grade location sensor) locations within 0.3%.

Inspection Numbers

Inspection Tool Launch – 24”

Typical Stuffing Box Installed

Modular to facilitate introduction through Manholes.

PICA’s PCCP Tools

36” – 48” Tool

RAFT: High Res EM In-Line

Inspection Tool

RECON+ - Extraction

RECON+ - Extraction

Wire breaks are important for the understanding the

structural integrity/strength of PCCP.

Cylinders are important as a water barrier.

If the cylinder is compromised, it could corrode the wires

and is arguably a pre-cursor to wire breaks.

PICA’s remote field tool will also detects both wire breaks

and corrosion defects

PCCP – Wire Breaks and Cylinder

No Calibration Pipe Available

Use a close representative pipe sample to confirm tool is

sensitive to wall loss.

Estimate optimal tool settings based on representative pipe.

Perform a mathematical calibration and utilize histogram.

Calibration Process

Calibration Pipe Available?

Scan the cal pipe for a baseline.

After baselining, machine defects into the pipe.

Examples: Simplest Defect Morphology for depth sizing:

Six 25.4mm diameter, round, flat bottom holes (Depths: 20%, 40%, 50%, 60%, 80%, 100%)

Simplest Defect Morphology for volumetric sizing and determining Threshold of Detection: (Through Hole Diameters-THD) [25.4mm, 19.1mm, 12.7mm, 6.4mm, 4.8mm, 3.2mm, 1.6mm]

Scan the machined cal pipe for optimal accuracy.

No Pipe available?

Use close representative pipe sample.

Perform a mathematical calibration and utilize histogram.

24-inch Calibration Example

EMIT: High Res EM In-Line Inspection Tool

48” – 78” Tool

PICA’s PCCP Tools

Flexible and modular.

PICA’s PCCP Tools

EMIT: High Res EM In-Line Inspection Tool

Full Bore Access

All of our EM tools =<36” require full bore

access.

All PICA tools can pass through bends.

Butterfly and Plug valves must be removed or

avoided.

Butterfly valves in dewatered pipes, if large

enough, can be passed manually by a crew and

tool (rebuilt in pipe).

Access Requirements

Ongoing R&D – PCCP Inspection

Field Wire Break Detection

10+ broken wires in body of pipe.

Cylinder Failure with Intact Wires

On-Going R&D