Ref File 1-4 5Dec19 NDT Report FP BFV Unit 4.pdf

Technical Report: Fort Peck Butterfly Valve#4 Inspection Report

FT. PECK PH#2 BUTTERFLY VALVE NDT

Req. # W59XQG92289457 Date: 12/5/2019

Prepared for:

U.S. ARMY CORPS OF ENGINEERS OMAHA DIST.

CONTRACTING OFFICE

1616 CAPITOL AVENUE

OMAHA NE 68102-4901

Inspected by:

Thomas R. Hay, P.E., ASNT Level 3#107162

TECHKNOWSERV CORP.

2134 Sandy Dr., Suite 14

State College PA, 16803

(814) 237-0144 i

Executive Summary

Butterfly Valve #4 was inspected in accordance with the statement of work (SOW) using visual inspection (VT), magnetic particle testing (MT), and phased array ultrasonic testing

(PAUT).

In general, it was possible to prepare the surfaces of the of the upstream and downstream welds adequately to assess the condition of the welds with visual testing (VT), magnetic particle (MT) testing, and phased array ultrasonic testing (PAUT).

The exception was the circumferential weld that joined the two disc halves. The surface corrosion on this weld prevented VT, MT, and PAUT over almost the entire weld. In addition to the surface of the circumferential welds, the advanced corrosion and coating blistering was observed up to 6 inches into the shell surface. Upon conclusion of the

Butterfly Valve # 4 inspection, the condition of the circumferential weld is largely unknown and may pose the most risk to the continued safe operation of the valve due to this uncertainty. Only a total of 29” of the circumferential weld were scanned with PAUT with no weld discontinuities detected. The remainder of the circumferential weld was not inspected due to advanced corrosion and surface roughness.

The upstream and downstream valve welds were inspected visually for fabrication related cracks, weld/base metal fusion, craters, undercut and porosity. No observable fabrication related defects were noted. The upstream and downstream valve welds were inspected for in-service fatigue and corrosion related defects. No in-service related fatigue cracks were detected.

The upstream and downstream valves were inspected with PAUT per the statement of work. Most areas that were scanned had tightly adhered coating that permitted adequate transfer of ultrasound into the valve shell. Weld discontinuities were sized using the 6-dB sizing technique in the length and height direction.

The upstream side contained 17 weld discontinuities longer than 1” and the upstream side contained 4 weld discontinuities with a height greater than 0.375”. The most severe discontinuity, a lack of penetration, was found in weld S8a with a length of 23.303” and a height of 0.372”.

The downstream side contained 16 weld discontinuities longer than 1” and the upstream side contained 1 weld discontinuity with a height greater than 0.375”. The most severe discontinuity was found in H1 with a length of 2.074” and a height of 0.408”.

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The following recommendations are presented for the next major valve maintenance event:

1. Circumferential weld: Remove lead paint with industry standard practices, blast to bare metal, and clean the circumferential weld and shell to at least 6 inches radially from the valve OD. Perform detailed VT, MT, and PAUT. Apply new coating system to these areas after inspection.

2. Welds and shell with corrosion and blistering: Remove lead paint with industry standard practices, blast to bare metal, and clean all welds on which coating breakdown and corrosion were observed and perform a detailed inspection in accordance with AWS D1.1. Additional welds may need to be considered at the time of the maintenance event. Apply new coating system to these areas after inspection.

3. Re-asses risk matrix color-coded red welds after abatement, blasting, and cleaning: Perform encoded PAUT to more accurately locate and size the weld discontinuities. Apply new coating system to these areas after inspection. Re-assess possible repair action after new sizing data is made available. Determine if discontinuity has grown and, if so, repair immediately.

4. For all welds with intermittent weld discontinuities: Remove lead paint with industry standard practices, blast to bare metal, and clean the weld surfaces 7” back from the toe. Perform encoded PAUT to determine if intermittent weld discontinuities detected are indeed intermittent or instead a longer continuous weld discontinuity.

The objective of abatement, blasting to bare metal, cleaning, and applying the new coating system to the valve surfaces, where necessary, is to prolong the fatigue life of the valve components by reducing stress concentrations and the likelihood of slip by dislocation movements at the corroded surfaces. Fatigue related slip and dislocation movement are more likely to occur at corroded versus smooth surfaces.

The objective of PAUT scanning on abated, cleaned and blasted surface is fourfold.

1. It will eliminate and false positives that may occur due to surface conditions.

Rough and uneven surfaces may cause false indications that appear in the welds tested.

2. The size and location of the weld discontinuities will be more accurate for potential repair action.

3. It will determine if flaw is active and growing or inactive and stable.

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4. Thirdly, it will determine it if many of the smaller intermittent weld discontinuities detected are indeed intermittent or indicative of longer continuous weld discontinuities that were not detected due to surface roughness and data loss.

Some comments on lessons learned:

- The USACE’s objective to evaluate the welds in accordance with the SOW was largely successful with the exception of the circumferential weld and limited horizontal splice welds, vertical welds joining disc plate to disc hub, horizontal welds joining disc plate to disc hub, diagonal welds, and O welds that exhibited blistering and surface corrosion that prevented inspection.

- In general, the coating on the butterfly valve tightly adhered to the shell surface and permitted ultrasound transfer into the test piece to produce weld discontinuity reflection at adequate signal-to-noise ratios. For future inspections, this demonstrated that PAUT inspection is possible on coated surfaces.

- The surface conditions had more of an impact on inspection sensitivity than originally expected. While the scan plan cited +6dB scanning gain it was determined that up to 20 dB was needed in some cases to scan at sensitivity level that was judged adequate by the inspector. For this reason, it would be advisable to have a PAUT contractor on-site prior to and during future repairs if deemed necessary.

- Does the value added by abatement and blasting on the PAUT results justify performing these steps before the non-destructive testing? The overall coverage and performance of all NDT processes would be enhanced if abatement and blasting were performed beforehand. The cost of the abatement and blasting, however, my be leveraged into a longer fatigue service life through minimization of corrosion related fatigue phenomena.

- The butterfly valve was built in 1960 to neither ASME Boiler and Pressure Vessel Code or AWS D1.1 code, but rather Williamette Iron and Steel Company Welding Procedure A-

3385. Stress relief was carried out to ASME VIII. The statement of work required inspection to ASME BPVC Sec. V. The welds inspected with PAUT were non-traditional in terms of the current ASME BPVC PAUT inspection market which are largely larger circumferential girth and seam welds compare to the T- and corner style welds on the valve.

Therefore, if it was the goal of the USACE to adopt a standard to which this valve should be inspected, it may be more advisable to adopt AWS D1.1 due to the style of welds.

However, a fracture mechanics approach may be more advisable so that analyses can focus on targeted flaw sizes and desired safety factors specific to the butterfly valve.

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Table of Contents

Executive Summary ............................................................................................................. i

Table of Contents ............................................................................................................... iv 1 Introduction 2 Visual Inspection

Weld Preparation Weld Visual Inspection Results

Visual Inspection Summary 3 Magnetic Particle Testing Results

Magnetic Particle Testing Parameters Magnetic Particle Testing Summary

4 Phased Array Testing Results

How to Interpret PAUT Results

PAUT Inspection Summary

5 PAUT Inspection Results Valve 4 Upstream Valve 4 Downstream

6 Equipment Calibrations

Magnetic Particle Testing Equipment Phased Array Testing Equipment

7 Inspector Certifications Visual and Phased Array Ultrasonic Testing Visual and Phased Array Ultrasonic Testing

1 Introduction

Butterfly valve weld # 4 was inspected in accordance with the statement of work (SOW) using visual inspection (VT), magnetic particle testing (MT), and phased array ultrasonic testing

(PAUT). For reporting purposes, the upstream and downstream weld identification schemes shown in Figure 1.1 and 1.2 were used.

Figure 1.1 is the upstream view of the butterfly valve showing the location and IDs of the horizontal splice welds joining disc plates to the ribs (S1-S13), vertical welds joining disc plate to disc hub (V1-V8), and horizontal welds joining disc plate to disc hub (H1-H2).

Figure 1.2 is the downstream view of the butterfly valve showing the location and IDs of, vertical welds joining disc plate to disc hub (V1-V4), and horizontal welds joining disc plate to disc hub

(H1-H2), diagonal welds (X1-X4), and O welds (O1-O4).

Figure 1.1: Butterfly valve # 4 upstream view.

Upstream View

S1-S13: Horizontal splice welds joining disc plates to the ribs

V1-V8: Vertical welds joining disc plate to disc hub

H1-H2: Horizontal welds joining disc plate to disc hub

S5end, S6 end: Short welds w/smaller weld reinforcement approximately 14” long

Figure 1.2: Butterfly valve # 4 downstream view.

Downstream View

V1-V4: Vertical welds joining disc plate to disc hub

H1-H2: Horizontal welds joining disc plate to disc hub

X1-X4: Diagonal welds joining disc plate to disc plate

O1-O4: Diagonal welds joining disc plate to disc plate

2 Visual Inspection

A visual inspection of Butterfly Valve 4 was performed on 10/03/19 – 10/08/19 in accordance with

ASME BPVC Sec. V. AWS D1.1 Table 6.1 Visual Inspection Acceptance Criteria and ASME

BPVC VIII Table 7.6 Visual Examination Acceptance Criteria for fabrication related weld defects were considered during the inspection and reporting process. The AWS D1.1 and ASME BPVC acceptance criteria are presented in Figures 2.1 and 2.2. A summary of the inspection results relative to AWS D1.1 and ASME BPVC VII Table 7.6 are shown in Tables 2.1 and 2.2.

Table 2.1: Summary of AWS D1.1 Table 6.1 Visual Inspection Criteria

Weld Defect Type Status Comments

Crack Prohibition Pass

Weld/Base Metal

Fusion

Pass

Crater Cross-section

Pass

Weld profiles N/A Weld profiles not measured

Undersized welds N/A Fillet welds only

Undercut Pass

Porosity Pass

Table 2.2: Summary of ASME BPCV VIII Table 7.6 Visual Examination Acceptance Criteria

Weld Defect Type Status Comments

Gas

Cavity/Shrinkage

Cavity

Pass

Inclusions Pass

Incomplete fusion Pass

Lack if penetration Pass

Weld reinforcement

N/A Weld profiles not measured

Undercut Pass

Porosity Pass

Figure 2.1: AWS D1.1 Table 6.1 Visual Inspection Acceptance Criteria

Figure 2.2: ASME BPVC VIII Table 7.6 Visual Examination Acceptance Criteria

Weld Preparation

In accordance with the SOW, the welded region was cleaned for visual inspection and base metal inspection. The base metal was cleaned to approximately 6” from the weld toe. To remove the organic film and surface scale the following procedure was used:

- Scrub surface with an industrial grade plastic bristle scrub brush and water

- Scrub surface with steel wire brush surface to loosen organic film

- Rinse and clean surface with an industrial grade plastic bristle scrub brush and water

- Wipe down with rag and assess surface quality

- Repeat previous steps as required

Lead paint was not removed from the surface during this process.

Figure 2.3: Example cleaned surfaces on Valve 4 upstream welds H1 and S11.

Weld Visual Inspection Results

The locations of the notable coating breakdown and surface corrosion on the upstream and downstream sides are shown in Figures 2.4 and 2.5, respectively, via the yellow areas superimposed onto the valve welds. Details on each weld are presented in Table 2.3.

Figure 2.4: Locations of coating breakdown and surface corrosion on Valve 4 upstream side.

Figure 2.5: Locations of coating breakdown and surface corrosion on Valve 4 downstream side.

Table 2.3: Visual Inspection Summary of Valve #4

Valve 4 Upstream Side

Weld Comments

S1 4” of blistering and surface corrosion at top of weld along toe. Coating in good condition over remainder of weld.

S2 No blistering or surface corrosion, coating in good condition over length of weld.

S2 No blistering or surface corrosion, coating in good condition over length of weld.

S4 No blistering or surface corrosion, coating in good condition over length of weld.

S5 No blistering or surface corrosion, coating in good condition over length of weld.

S6 No blistering or surface corrosion, coating in good condition over length of weld.

S7 No blistering or surface corrosion, coating in good condition over length of weld.

S8 0.50” diameter blistering and surface corrosion, 0.020” depth. Coating in good

S9 No blistering or surface corrosion, coating in good condition over length of weld.

S10 No blistering or surface corrosion, coating in good condition over length of weld.

S11 No blistering or surface corrosion, coating in good condition over length of weld.

S12 No blistering or surface corrosion, coating in good condition over length of weld.

S13 No blistering or surface corrosion, coating in good condition over length of weld.

V1 20” of blistering and surface corrosion at top of weld. Coating in good condition over remainder of weld.

V2 4” of blistering and surface corrosion at top of weld. Coating in good condition over

V3 18” of blistering and surface corrosion over bottom half of weld. Coating in good

V4 Blistering and surface corrosion bottom 4” of weld. Coating in good condition over

V5 No blistering or surface corrosion, coating in good condition over length of weld.

V6 1” diameter blistering and surface corrosion, 0.020” depth, on bottom section of weld towards outside toe. Coating in good condition over remainder of weld.

V7 No blistering or surface corrosion, coating in good condition over length of weld.

V8 No blistering or surface corrosion, coating in good condition over length of weld.

H1 No blistering or surface corrosion, coating in good condition over length of weld.

H2 No blistering or surface corrosion, coating in good condition over length of weld.

Valve 4 Downstream Side

H1 No blistering or surface corrosion, coating in good condition over length of weld.

H2 No blistering or surface corrosion, coating in good condition over length of weld.

V1 24” of blistering and surface corrosion at top of weld. Coating in good condition over

V2 36” of Intermittent blistering and surface corrosion at top of weld. Coating in good

V3 No blistering or surface corrosion, coating in good condition over length of weld.

V4 Blistering and surface corrosion along the length of the weld.

X1 6” blistering and surface corrosion at end of weld towards OD. Coating in good

See X3 picture for reference.

X2 6” blistering and surface corrosion at end of weld towards OD. Coating in good condition over remainder of weld.

See X3 picture for reference.

X3 6” blistering and surface corrosion at end of weld towards OD. Coating in good

X4 5” blistering and surface corrosion at end of weld towards OD. Coating in good

O1 No blistering or surface corrosion, coating in good condition over length of weld.

O2 No blistering or surface corrosion, coating in good condition over length of weld.

O3 No blistering or surface corrosion, coating in good condition over length of weld.

O4 No blistering or surface corrosion, coating in good condition over length of weld.

Circumferential Weld

Circ Weld showed advanced blistering and surface corrosion over entire circumference.

Visual Inspection Summary

The upstream and downstream valve welds were inspected for fabrication related cracks, weld/base metal fusion, craters, undercut and porosity. No observable fabrication related defects were noted.

The upstream and downstream valve welds were inspected for in-service fatigue and corrosion related defects. No in-service related fatigue cracks were detected. Numerous areas of coating breakdown and surface corrosion and/or on-set of surface corrosion were observed on upstream and downstream welds. The entire circumferential weld joining disc halves showed advanced corrosion and coating breakdown.

Magnetic particle testing (MT) was performed on the upstream and downstream sides of butterfly valve in accordance with the statement-of-work. There were no cracks detected with MT.

WFMT was not performed on the circumferential weld joining the disc halves due to the surface conditions described in the visual inspection report.

1. Remove lead paint with industry standard practices, blast to bare metal, and clean the circumferential weld and shell to at least 6 inches radially from the valve OD. Perform a detailed visual inspection in accordance with AWS D1.1 guideline. Magnetic particle test same areas. Apply new coating system to these areas after inspection.

2. Remove lead paint with industry standard practices, blast to bare metal, and clean all welds on which coating breakdown and corrosion were observed and perform a detailed inspection in accordance with AWS D1.1. Additional welds may need to be considered at the time of the maintenance event. Apply new coating system to these areas after inspection.

3. Remove lead paint with industry standard practices, blast to metal, and clean all shell areas that exhibit coating breakdown and corrosion. Apply new coating system to these areas after inspection.

The objective of abatement, blasting to bare metal, cleaning, and applying the new coating system to the valve surfaces, where necessary, is to prolong the fatigue life of the valve components by reducing stress concentrations and the likelihood of slip by dislocation movements at the corroded surfaces. Fatigue related slip and dislocation movement is more likely to occur at corroded versus smooth surfaces.

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3 Magnetic Particle Testing Results

Magnetic particle testing (MT) was performed on the upstream and downstream sides of butterfly valve in accordance with the statement-of-work. There were no cracks detected with MT.

Wet fluorescent magnetic particle testing (WFMT) was performed on 100% of the tension side

(downstream side), and 25% of the upstream side, of the vertical and horizontal welds joining the disc plates to the disc hub “casting”. (Reference drawing H-4075, assembly side view, Detail J, and Section F-F).

WFMT was performed on at least 50% of all horizontal splice welds (plug and butt type) joining the disc plates to the ribs, on the upstream side and 100% of same welds on the downstream side.

WFMT was not performed on the circumferential weld joining the disc halves due to the surface conditions described in the visual inspection report.

WFMT was performed on approximately 95% of the he “X” and “O” splice welds located on the upstream side of the disc weldment. All X-welds exhibited blistering and surface corrosion towards the ends of the weld at the valve OD. These areas were not inspected.

The performance of the total WFMT system was confirmed on-site using a Quantitative Quality

Shim (QQI) shim with a 0.0006” deep EDM notch. The horizontal indication generated with the

MT yoke, wet bath, and UV light is shown in Figure 3.1.

Figure 3.1: WFMT indication from QQI shim.

Figure 3.2: WFMT welds on upstream valve side.

Figure 3.3: WFMT welds on downstream valve side.

Magnetic Particle Testing Parameters

Surface preparation:

Plastic brush, steel wire brush, plastic brush, repeat as necessary. See visual inspection surface cleaning description.

MT Method Used: Wet Dry Black/White Contrast Fluorescent

Particle Suspension: Water

Magnetizing Current: AC DC HWDC

Applicable Method: Residual Continuous

Field Direction: Circular Longitudinal

Equipment Used: Coil Yoke Other

Coil Serial #: N/A Calibration Due Date: N/A

Yoke Coil Serial #: 26322 and 20702 Date Calibrated: 11/30/2018

Black Light Intensity: >1000 mW/cm2 Black Light Serial #: 2157677

Light Meter Serial #: N/A: Confirmed on-site using shim Calibration Due Date:

N/A:

Confirmed on-site using shim

Particle Concentration: 0.2-0.4 ml per 100 ml

Acceptance Criteria: No cracks allowed

MPI

Inspector: Seth Bonar TKS SNT-TC-1A Seth Bonar 10/21/19

Name Certification # Signature Date

Magnetic Particle Testing Summary

The follow-up magnetic particle inspection recommendations are consistent with those summarized in the Visual inspection Summary.

1. Remove lead paint with industry standard practices, blast to bare metal, and clean the circumferential weld and shell to at least 6 inches radially from the valve OD. Magnetic particle test same areas. Apply new coating system to these areas after inspection.

4 Phased Array Testing Results

The phased array testing was performed in accordance with the statement of work and the Final

Scan Plan which was approved 10/01/2019. The scan plan was part of the original submittals and is not included in the technical report.

A fracture mechanics-based weld discontinuity evaluation was performed in accordance with

ASME BPVC Mandatory Appendix VIII – Ultrasonic Examination Requirements for Fracture-

Mechanics-Based Acceptance Criteria.

Weld discontinuities were sized using the 6-dB sizing technique in the length and height direction.

The dimensions of the flaw are determined by the rectangle that fully contains the area of the flaw.

The length of the flaw shall be the dimension of the rectangle that is parallel to the weld center line.

The height of the flaw shall be the dimension of the rectangle in the thickness direction of the shell thickness.

ASME BPVC Section V, Mandatory Appendix VIII

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How to Interpret PAUT Results

V1 V2 S1 S2

H1

V3 V4

S9 S10

H2

S5 S6

S3 S4 S11

S12

S7 S8 S13

V5 V6

V7 V8

Butterfly Valve # 4 – Upstream View

The following reference system was used to locate weld indications on the valve. For horizontal welds, the flaws indications are located from left to right. The scan origin is the left most edge of the weld. Vertical welds on the top half of the valve are referenced from the bottom up. Vertical welds on the bottom half of the valve are referenced from the top down.

- Scan Origin Index (X = 0)

- Scan Directional Indication

S6 End S5

End

Figure 4.1: PAUT scan origin (reference point) and scan direction for Valve 4 Upstream side.

Figure 4.2: PAUT scan origin (reference point) and scan direction for Valve 4 Downstream side.

V1 V2

H1

V3 V4

H2

Butterfly Valve # 4 – Downstream View

The following reference system was used to locate weld indications on the valve. For horizontal welds, the flaws indications are located from left to right. The scan origin is the left most edge of the weld. Vertical welds on the top half of the valve are referenced from the bottom up. Vertical welds on the bottom half of the valve are referenced from the top down.

X1 X2

X3 X4

O1

O2

O3

O4

- Scan Origin Index (X = 0)

- Scan Directional Indication

Figure 4.3 identifies the coordinate system used to for weld indication length (X), location in weld (Y), and depth from exterior surface (Z).

Figure 4.3: X, Y, and Z coordinate system for weld reflector identification. Note that X-direction is into the page.

The size of each reflector are summarized for upstream and downstream welds in Tables 4.1 and

4.2, respectively. The sizes are color coded in a risk matrix based on the following weld flaw dimensions:

Flaw Length <0.200 0.200- 0.500

0.500- 1.000

>1.000

Flaw Height <0.125 0.125- 0.250

0.250- 0.375

>0.375

The PAUT encoder scan directions and associated data files, for upstream and downstream sides, are shown in Figures 4.5 and 4.7, respectively. The data files were identified by valve#, upstream/downstream, weld ID, and top/bottom or outside/inside. For example, “Valve4uss4a” is the data file name for the scan of Valve #4, up-stream weld s4, top weld. Valve4uss4b would be the bottom weld. The encoder scan directions are identified via the set of perpendicular arrows.

The longer arrow is the scan direction, or weld axis, and the short arrow is the direction of the ultrasonic beams as shown in Figure 4.4.

Figure 4.4: Explanation of encoder scan direction and ultrasonic beam directions.

Encoder direction

Ultrasonic beam direction

The upstream side contained 17 weld discontinuities longer than 1” as shown in Table 4.1. The upstream side contained 4 weld discontinuities with a height greater than 0.375”. The most severe discontinuity was found in S8a with a length of 23.303” and a height of 0.372”. The PAUT inspection details for all welds inspected is presented in Section 5. The data for Weld s8A, for example, shows that the discontinuity was found mid-wall and was classified as lack of fusion

(LOF).

Table 4.1: Valve #4 upstream weld discontinuity dimensions.

Valve 4 US Welds

Length S(m-r)

Height U(m-r)

X1 (in)

X2 (in)

Y1 (in)

Y2 (in)

Z1 (in)

Z2 (in)

Thickness (in)

Discontinuity

S1b 0.535 0.443 5.5 6.0 0.0 0.6 1.7 2.2 2.75 LOF

S5a 0.688 0.248 7.0 7.7 -1.3 -1.0 0.9 1.2 2.75 LOF

1.526 0.250 11.5 12.2 0.0 0.2 2.3 2.6 2.75 LOF

0.752 0.298 25.3 26.0 0.2 0.4 2.0 2.3 2.75 LOF

S7a 0.899 0.301 38.0 39.5 -1.4 -1.1 1.5 1.9 2.75 LOF

S7b 0.417 0.248 0.0 0.2 -1.3 -1.0 1.5 1.7 2.75 LOF

0.514 0.284 18.2 18.5 -0.3 0.0 1.8 2.1 2.75 LOF

S8a 23.303 0.372 23.5 46.8 -1.5 -1.1 1.5 1.9 2.75 LOF

S8b 1.722 0.284 1.4 2.3 -1.4 -1.2 0.9 1.2 2.75 LOF

1.243 0.195 12.6 13.8 -1.5 -1.3 1.6 1.8 2.75 LOF

0.981 0.213 34.5 35.5 -1.9 -1.6 1.2 1.5 2.75 LOF

S9a 1.301 0.334 20.8 22.1 -2.0 -1.8 1.1 1.4 2.75 LOF

1.301 0.346 3.8 5.1 -1.5 -1.3 1.4 1.7 2.75 LOF

0.466 0.247 2.3 2.7 -2.0 -1.8 1.0 1.3 2.75 LOF

S9b 1.280 0.359 2.0 3.3 0.5 0.7 1.8 2.2 2.75 LOF

4.358 0.276 21.7 26.1 -1.4 -1.2 1.6 1.9 2.75 LOF

s10b 1.548 0.337 19.4 21.2 -0.1 0.1 1.3 1.7 2.75 LOF

0.434 0.339 5.3 5.6 -1.4 -1.1 1.4 2.0 2.75 LOF

H1 0.364 0.248 23.6 24.0 -0.1 0.1 2.3 2.6 2.75 LOF

1.739 0.355 14.9 16.6 0.3 0.6 1.5 1.9 2.75 LOF

1.628 0.355 8.4 10.0 0.3 0.6 1.5 1.9 2.75 LOP

H2 0.447 0.284 16.4 16.9 -0.6 -0.3 2.4 2.7 2.75 LOP

0.430 0.314 27.6 28.1 0.2 0.5 2.3 2.6 2.75 LOP

V1 2.599 0.567 6.7 10.0 1.7 2.0 1.8 2.3 2.75 LOF

V5a 0.795 0.213 32.1 32.9 -1.2 -1.0 0.9 1.1 2.75 LOF

0.344 0.301 23.4 24.6 -0.5 -0.2 1.1 1.4 2.75 LOF

3.762 0.340 17.9 21.7 -0.5 -0.2 1.1 1.4 2.75 LOF

0.817 0.340 13.8 14.6 -0.5 -0.2 1.1 1.4 2.75 LOF

0.430 0.213 30.4 30.9 -0.2 -0.1 0.9 1.1 2.75 LOF

V6a 4.428 0.266 27.6 32.1 -1.5 -1.2 1.6 1.9 2.75 LOF

0.459 0.357 21.9 22.4 -1.0 -0.7 1.7 2.1 2.75 LOF

V6b 0.757 0.421 31.2 31.9 -0.9 -0.5 0.6 0.9 2.75 LOF

0.620 0.290 30.7 31.3 -1.5 -1.3 1.6 1.9 2.75 LOF

1.033 0.378 25.8 26.8 0.0 0.2 1.2 1.6 2.75 LOF

1.790 0.256 15.0 16.8 -1.5 -1.2 0.8 1.1 2.75 LOF

V8a 2.074 0.271 3.9 6.0 -1.5 -1.3 0.9 1.2 2.75 LOF

V8b 0.397 0.266 12.6 13.0 0.2 0.4 2.2 2.5 2.75 LOF

0.190 0.301 7.2 7.4 0.0 0.2 1.2 1.5 2.75 LOP

Table 4.2: Valve #4 downstream weld discontinuity dimensions.

Valve 4 DS Welds Length S(m-r)

Height U(m-r)

X1 (in)

X2 (in)

Y1 (in)

Y2 (in)

Z1 (in)

Z2 (in)

Thickness (in)

Discontinuity

H1 0.161 0.213 6.5 6.7 0.4 0.6 1.4 1.6 2.75 LOF

0.346 0.177 3.4 3.8 0.5 0.7 1.3 1.5 2.75 LOF

2.074 0.408 1.7 3.8 0.1 0.3 2.4 2.7 2.75 LOP

H2 0.275 0.195 0.6 0.9 -1.4 -1.2 1.0 1.2 2.75 LOF

0.344 0.195 4.8 5.2 -1.2 -1.0 0.9 1.1 2.75 LOF

0.367 0.124 14.6 15.0 -0.9 -0.7 1.1 1.2 2.75 LOF

1.033 0.213 36.4 37.4 -0.3 -0.1 2.0 2.2 2.75 LOF

V1 2.801 0.372 20.4 23.2 -0.2 -0.1 2.3 2.7 2.75 LOP

0.229 0.319 26.6 26.8 -0.1 0.0 1.7 2.0 2.75 LOF

0.486 0.124 29.3 29.8 -0.6 -0.4 1.9 2.1 2.75 LOF

V3 1.083 0.284 0.9 2.0 -0.6 -0.5 1.7 2.0 2.75 LOF

0.237 0.142 16.7 16.9 -0.6 -0.5 1.6 1.8 2.75 LOF

0.237 0.142 32.8 33.3 -0.7 -0.5 1.6 1.8 2.75 LOF

0.305 0.160 36.3 36.6 -0.7 -0.6 0.6 0.8 2.75 LOF

V4 0.474 0.142 2.0 2.6 -0.1 -0.0 1.0 1.2 2.75 LOF

0.914 0.227 3.0 4.0 -0.3 -0.1 1.9 2.1 2.75 LOF

0.677 0.153 20.2 20.8 -0.2 0.0 1.9 2.1 2.75 LOF

0.711 0.113 21.9 22.6 -0.3 -0.1 1.9 2.1 2.75 LOF

0.474 0.139 29.4 29.9 -0.2 0.2 1.8 2.1 2.75 LOF

2.233 0.262 33.6 35.9 -0.2 0.0 2.4 2.7 2.75 LOP

O1a 1.586 0.370 9.0 10.6 0.4 0.6 1.3 1.7 2.75 LOF

0.220 0.164 13.1 13.3 0.6 0.8 0.6 0.8 2.75 LOF

O1b 0.258 0.230 23.1 23.4 -0.3 -0.2 1.2 1.5 2.75 LOF

0.240 0.230 15.4 15.7 -0.3 -0.2 1.2 1.5 2.75 LOF

O2a 0.312 0.209 11.5 11.8 -0.8 -0.6 1.6 1.8 2.75 LOF

0.504 0.222 12.9 13.4 -0.7 -0.5 1.2 1.5 2.75 LOF

O2b 0.556 0.195 4.2 4.8 -0.7 -0.5 1.8 2.0 2.75 LOF

O3a 0.234 0.195 0.3 0.6 -0.6 -0.4 1.2 1.4 2.75 LOF

O4a 2.162 0.284 12.1 14.3 -0.8 -0.6 1.6 1.9 2.75 LOF

0.270 0.230 15.2 15.4 -0.8 -0.6 1.0 1.2 2.75 LOF

0.748 0.177 22.9 23.7 -0.6 -0.4 1.0 1.2 2.75 LOF

0.520 0.203 26.8 27.3 -0.8 -0.6 1.1 1.3 2.75 LOF

0.333 0.207 28.1 28.4 -0.9 -0.7 1.5 1.7 2.75 LOF

0.291 0.167 15.2 15.5 -0.8 -0.6 1.0 1.2 2.75 LOF

O4b 0.682 0.284 28.7 29.4 -0.8 -0.6 1.7 2.0 2.75 LOF

0.297 0.266 20.1 20.4 0.4 0.6 1.2 1.5 2.75 LOF

X1a 0.429 0.230 13.8 14.2 -0.1 0.1 1.9 2.2 2.75 LOF

0.858 0.248 20.8 21.6 0.1 0.3 1.2 1.5 2.75 LOF

1.170 0.209 42.8 44.0 -0.5 -0.3 1.2 1.4 2.75 LOF

0.507 0.355 62.0 62.4 -0.2 -0.0 1.9 2.2 2.75 LOF

1.521 0.248 67.4 68.8 -0.7 -0.4 1.2 1.5 2.75 LOF

X1b 1.711 0.319 74.1 75.9 -0.2 0.1 2.0 2.3 2.75 LOF

1.445 0.301 28.6 30.0 -0.2 0.1 2.0 2.3 2.75 LOF

1.407 0.195 29.6 31.0 -0.9 -0.7 2.1 2.3 2.75 LOF

0.380 0.160 15.9 16.4 -0.6 -0.4 2.5 2.7 2.75 LOP

0.532 0.195 18.3 18.9 -0.5 -0.3 2.1 2.3 2.75 LOF

X2b 0.887 0.160 32.1 33.0 -0.6 -0.5 2.0 2.2 2.75 LOF

0.591 0.177 43.2 43.8 -0.8 -0.6 2.2 2.4 2.75 LOF

X3a 0.402 0.195 21.0 21.4 -0.3 -0.2 2.0 2.2 2.75 LOF

0.522 0.225 28.0 28.5 0.0 0.1 1.1 1.4 2.75 LOF

1.124 0.248 65.7 66.8 -0.4 -0.1 1.6 1.9 2.75 LOF

X4a 1.686 0.288 56.3 58.0 -0.9 -0.7 1.9 2.2 2.75 LOF

1.244 0.213 63.9 65.1 -0.5 -0.3 2.0 2.2 2.75 LOF

X4b 0.803 0.248 78.4 79.2 -0.6 -0.4 1.9 2.2 2.75 LOF

1.686 0.248 73.7 75.4 -0.6 -0.4 1.9 2.2 2.75 LOF

0.482 0.311 72.6 73.0 -0.7 -0.4 1.9 2.2 2.75 LOF

The downstream side contained 16 weld discontinuities longer than 1” as shown in Table 4.2. The downstream side contained 1 weld discontinuities with a height greater than 0.375”. The most severe discontinuity was found in H1 with a length of 2.074” and a height of 0.408”. The PAUT inspection details for all welds inspected is presented in Section 5. The data for Weld H1 shows that the discontinuity was found towards the weld bottom and was classified as lack of penetration.

(LOP).

PAUT Inspection Summary

The upstream and downstream valves were inspected with PAUT per the statement of work. Most areas that were scanned had tightly adhered coating that permitted adequate transfer of ultrasound into the valve shell. The data acquired supports this observation as root and toe reflections were observed in many of the welds. However, data was lost over a small percentage of the scanned areas and many welds required rescanning of rough surface areas. In many cases, it was impossible to transfer ultrasound into the valve shell. This lack of data is depicted in the Section 5 PAUT data as black gaps in the C-scan. For Butterfly Valve #4, all discontinuities detected were characterized as fabrication related flaws which included lack of penetration, lack of fusion, and inclusions.

A total of 29” for the circumferential weld were scanned with PAUT with no weld discontinuities detected. The remainder of the circumferential weld was not inspected due to advanced corrosion and surface roughness.

1. For all color-coded red welds in Tables 4.1 and 4.2. remove lead paint with industry standard practices, blast to bare metal, and clean the weld surfaces 7” back from the toe.

Perform encoded PAUT to more accurately locate and size the weld discontinuities. Apply new coating system to these areas after inspection. Re-assess possible repair action after new sizing data is made available.

2. For all welds with intermittent weld discontinuities, remove lead paint with industry standard practices, blast to bare metal, and clean the weld surfaces 6” back from the toe.

Perform encoded PAUT to determine if intermittent weld discontinuities detected are indeed intermittent or instead a longer continuous weld discontinuity.

3. Remove lead paint with industry standard practices, blast to bare metal, and clean the circumferential weld and shell to at least 6 inches radially from the valve OD. Perform

PAUT inspection. Apply new coating system to these areas after inspection.

The objective of scanning on abated, cleaned and blasted surface is threefold. Firstly, it will eliminate any false positives that may occur due to surface conditions. Rough and uneven surfaces may cause false indications that appear in the weld tested.

Secondly, the size and location of the weld discontinuities will be more accurate for potential repair action.

Thirdly, it will determine if many of the smaller intermittent weld discontinuities detected are indeed intermittent, or indicative of longer continuous weld discontinuities that were not detected due to surface roughness.

Figure 4.5: PAUT scan directions and data file names for Valve #4 upstream welds.

V3 V4

S9 S10

H2

S5 S5 S5end S6 S6 S6end

S3 S4 S3 S4 S11

S12

S7 S8 S7 S8

S13

Butterfly Valve # 4 – Upstream View

V5 V6

V7 V8 V alv e4 u sv

V alv e4 u sv Valve4us10b

Valve4sus10 a

Valve4us9b

Valve4us9a

Valve4us7a

Valve4us7b

Valve4us8a

Valve4us8b

Valve4usS5aend

Valve4usS5bend

Valve4usS5a

Valve4usS5b

Valve4usS6aend

Valve4usS6bend

Valve4usS6b

Valve4usS6a

Valve4ush2

V al v e4 u sv a, b al v e4 u sv a, b

Valve4uss13a,b

Valve4uss12a,b

Valve4uss11a,b Valve4uss3a,b Valve4uss4a,b

Valve4uss1a,b Valve4uss2a,b

V al v e4 u v e4 u

Valve4ush1

Figure 4.6: All PAUT weld discontinuities for Valve #4 upstream.

V3 V4 S9 S10

H2

S5 S5 S5end S6 S6 S6end

S3 S4 S3 S4 S11

S12

S7 S8 S7 S8

S13

V5 V6

V7 V8

Butterfly Valve # 4 – Upstream View

LOF LOF

LOF

LOF LOP

LOP

LOF LOF

LOF LOF LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF LOF LOF

LOF

LOP LOP LOF LOF

LOF LOF LOF

LOF

LOF

LOF

LOF

LOF LOF

Figure 4.7: PAUT scan directions and data file names for Valve #4 downstream welds.

V3 V4

H2

Butterfly Valve # 4 – Downstream View

X1 X2

X3 X4

O1

O2

O3

O4

V al v e4 d v e4 d sv

Valve4dsh2

V al v e4 d v e4 d

Valve4dsh1

Valve4dso1a,b Valve4dso2a,b Valve4dso3a,b Valve4dso4a,b

Figure 4.8: All PAUT weld discontinuities for Valve #4 downstream.

V3 V4

H2

X1 X2

X3 X4

O1

O2

O3

O4

C1

C2

Butterfly Valve # 4 – Downstream View

LOF

LOF

LOP

LOF LOF LOP LOF

LOF

LOP

LOF

LOF

LOF LOF

LOF LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF

LOF LOF LOF LOF

LOF

LOF

LOP

5 PAUT Inspection Results

Valve 4 Upstream

Valve 4 Upstream Side

Weld Comments

S1a No reportable indications.

S1b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

40.66 1 30.187 -6.500 PA 1 47.00º 32.0 1.844 3.244 5.360 0.443 0.512 0.677 0.535 LOF

S2a No reportable indications.

S2b No reportable indications.

S3a No reportable indications.

S3b No reportable indications.

S4a No reportable indications.

S4b No reportable indications.

S5a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

40.66 1 7.606 -6.500 PA 1 61.00º 49.9 1.018 1.336 2.099 0.248 0.202 0.320 0.688 LOF

40.66 2 12.217 -6.500 PA 1 46.00º 58.6 2.368 2.553 4.508 0.250 0.202 0.322 1.526 LOF

40.66 3 25.813 -6.500 PA 1 46.00º 46.7 2.214 2.713 4.730 0.298 0.243 0.384 0.752 LOF

S5a

END

No reportable indications.

S5b No reportable indications.

S5b

S6a No reportable indications.

S6a

S6b No reportable indications.

S6b

S7a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

40.66 1 21.305 -6.500 PA 1 48.00º 50.9 1.705 1.229 2.547 0.301 0.229 0.379 0.899 LOF

S7b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

40.66 1 0.276 -6.500 PA 1 51.00º 82.2 1.595 1.344 2.535 0.248 0.270 0.367 0.417 LOF

40.66 2 18.588 -6.500 PA 1 56.00º 48.0 1.942 2.318 3.473 0.284 0.256 0.382 0.514 LOF

S8a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

52.66 1 34.062 -6.500 PA 1 48.00º 78.8 1.653 1.171 2.470 0.372 0.391 0.540 23.303 LOF

S8b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

52.66 1 0.748 -6.500 PA 1 64.00º 69.0 1.018 1.623 2.321 0.284 0.162 0.327 1.722 LOF

52.66 2 12.759 -6.500 PA 1 64.00º 2.2 --- --- --- 0.195 0.175 0.262 1.243 LOF

52.66 3 35.322 -6.500 PA 1 47.00º 74.8 1.280 0.696 1.877 0.213 0.216 0.303 0.981 LOF

S9a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 14.321 -6.500 PA 1 46.00º 103.7 1.175 0.527 1.691 0.334 0.229 0.405 1.301 LOF

46.66 2 32.105 -6.500 PA 1 46.00º 119.9 1.613 0.980 2.321 0.346 0.243 0.423 1.301 LOF

46.66 3 33.482 -6.500 PA 1 49.00º 61.1 1.085 0.597 1.654 0.247 0.229 0.337 0.466 LOF

S9b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 2.518 -6.500 PA 1 47.00º 50.9 2.021 3.054 5.101 0.359 0.229 0.426 1.280 LOF

46.66 2 24.275 -6.500 PA 1 46.00º 91.5 1.767 1.140 2.544 0.276 0.175 0.327 4.358 LOF

S10a No reportable indications.

S10b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

40.66 1 15.924 -6.500 PA 1 63.00º 55.2 1.491 2.452 3.285 0.337 0.175 0.380 1.548 LOF

40.66 2 31.099 -6.500 PA 1 46.00º 73.4 1.767 1.140 2.544 0.339 0.235 0.412 0.434 LOF

S11a No reportable indications.

S11b No reportable indications.

S12a No reportable indications.

S12b No reportable indications.

S13a No reportable indications.

S13b No reportable indications.

H1 Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 6.227 -6.500 PA 1 51.00º 52.0 2.487 2.446 3.952 0.248 0.175 0.304 0.364 LOF

46.66 2 14.700 -6.500 PA 1 64.00º 77.3 1.667 2.955 3.804 0.355 0.229 0.422 1.739 LOF

46.66 3 20.926 -6.500 PA 1 64.00º 78.8 1.635 2.888 3.730 0.355 0.351 0.499 1.628 LOP

H2 Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 13.386 -6.500 PA 1 47.00º 67.2 2.518 2.024 3.693 0.284 0.216 0.356 0.447 LOP

46.66 2 2.165 -6.500 PA 1 55.00º 94.9 2.394 2.845 4.174 0.314 0.274 0.416 0.430 LOP

V1 Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

46.66 1 7.559 -6.500 PA 1 67.00º 64.3 2.008 4.300 5.138 0.567 0.337 0.660 2.599 LOF

V2 No reportable indications.

V3 No reportable indications.

V4 No reportable indications.

V5a Ref.

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

40.66 1 7.567 -6.500 PA 1 61.00º 77.3 1.023 1.345 2.109 0.213 0.216 0.303 0.795 LOF

40.66 2 15.527 -6.500 PA 1 55.00º 71.4 2.252 2.641 3.926 0.301 0.229 0.379 0.344 LOF

40.66 3 19.389 -6.500 PA 1 64.00º 71.4 1.245 2.088 2.839 0.340 0.256 0.426 3.762 LOF

40.66 4 25.616 -6.500 PA 1 63.00º 63.6 1.294 2.065 2.851 0.340 0.256 0.426 0.817 LOF

40.66 5 9.340 -6.500 PA 1 70.00º 57.7 0.995 2.337 2.909 0.213 0.135 0.252 0.430 LOF

V5b No reportable indications.

V6a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

40.66 1 11.507 -6.500 PA 1 46.00º 144.4 1.690 1.060 2.433 0.266 0.256 0.369 4.428 LOF

40.66 2 17.773 -6.500 PA 1 51.00º 76.7 1.881 1.697 2.988 0.357 0.283 0.456 0.459 LOF

V6b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

40.66 1 8.631 -6.500 PA 1 55.00º 59.0 1.693 1.843 2.951 0.421 0.418 0.593 0.757 LOF

40.66 2 9.103 -6.500 PA 1 46.00º 153.1 1.638 1.007 2.358 0.290 0.243 0.378 0.620 LOF

40.66 3 13.793 -6.500 PA 1 67.00º 55.9 1.399 2.867 3.581 0.378 0.337 0.507 1.033 LOF

40.66 4 24.749 -6.500 PA 1 60.00º 77.7 0.957 1.146 1.914 0.256 0.243 0.353 1.790 LOF

V7a No reportable indications.

V7b No reportable indications.

V8a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

46.66 1 34.207 -6.500 PA 1 58.00º 76.3 0.996 1.057 1.879 0.271 0.175 0.323 2.074 LOF

V8b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 12.729 -6.500 PA 1 55.00º 58.6 2.331 2.754 4.063 0.266 0.216 0.342 0.397 LOF

46.66 2 7.330 -6.500 PA 1 66.00º 71.4 1.321 2.527 3.248 0.301 0.175 0.349 0.190 LOP

Valve 4 Downstream

Weld Comments

H1 Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 23.383 -6.500 PA 1 63.00º 41.1 1.510 2.488 3.326 0.213 0.135 0.252 0.161 LOF

46.66 2 36.475 -6.500 PA 1 70.00º 109.6 1.274 3.103 3.724 0.177 0.148 0.231 0.346 LOF

46.66 3 37.185 -6.500 PA 1 51.00º 126.2 2.477 2.433 3.936 0.408 0.459 0.614 2.074 LOP

H2 Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

52.66 1 0.670 -6.500 PA 1 51.00º 55.0 1.018 0.631 1.617 0.195 0.189 0.271 0.275 LOF

52.66 2 5.002 -6.500 PA 1 50.00º 104.7 0.968 0.515 1.506 0.195 0.189 0.271 0.344 LOF

52.66 3 14.770 -6.500 PA 1 57.00º 108.2 1.123 1.180 2.062 0.124 0.135 0.183 0.367 LOF

52.66 4 36.906 -6.500 PA 1 46.00º 110.8 2.179 1.567 3.137 0.213 0.216 0.303 1.033 LOF

V1 Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 21.569 -6.500 PA 1 47.00º 139.7 2.594 2.105 3.804 0.372 0.405 0.550 2.801 LOP

46.66 2 26.656 -6.500 PA 1 55.00º 55.5 1.842 2.056 3.211 0.319 0.189 0.371 0.229 LOF

46.66 3 29.495 -6.500 PA 1 47.00º 90.2 1.988 1.455 2.914 0.124 0.121 0.174 0.486 LOF

V2 No reportable indications.

V3 Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

52.66 1 1.063 -6.500 PA 1 51.00º 133.3 1.671 1.438 2.655 0.284 0.283 0.401 1.083 LOF

52.66 2 16.818 -6.500 PA 1 51.00º 80.1 1.694 1.467 2.692 0.142 0.094 0.170 0.237 LOF

52.66 3 32.848 -6.500 PA 1 50.00º 74.6 1.683 1.367 2.618 0.142 0.148 0.205 0.237 LOF

52.66 4 36.353 -6.500 PA 1 50.00º 76.7 1.635 1.310 2.544 0.160 0.121 0.200 0.305 LOF

V4 Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

52.66 1 2.284 -6.500 PA 1 50.00º 98.9 1.016 0.572 1.580 0.142 0.229 0.269 0.474 LOF

52.66 2 3.466 -6.500 PA 1 47.00º 98.9 1.937 1.401 2.840 0.227 0.202 0.304 0.914 LOF

52.66 3 20.559 -6.500 PA 1 51.00º 98.9 1.997 1.841 3.174 0.153 0.162 0.223 0.677 LOF

52.66 4 22.292 -6.500 PA 1 51.00º 98.9 1.974 1.812 3.137 0.113 0.175 0.209 0.711 LOF

52.66 5 29.736 -6.500 PA 1 51.00º 72.8 1.997 1.841 3.174 0.139 0.364 0.390 0.474 LOF

52.66 6 35.093 -6.500 PA 1 46.00º 70.9 2.411 1.807 3.470 0.262 0.229 0.348 2.233 LOP

O1a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 10.134 -6.500 PA 1 65.00º 128.2 1.506 2.778 3.564 0.370 0.256 0.450 1.586 LOF

46.66 2 13.131 -6.500 PA 1 64.00º 69.5 1.667 2.953 3.802 0.164 0.148 0.221 0.220 LOF

O1b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 8.675 -6.500 PA 1 62.00º 39.0 1.299 1.955 2.766 0.230 0.121 0.260 0.258 LOF

46.66 2 16.443 -6.500 PA 1 62.00º 33.0 1.316 1.988 2.803 0.230 0.121 0.260 0.240 LOF

O2a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

43.66 1 11.593 -6.500 PA 1 51.00º 67.6 1.647 1.409 2.618 0.209 0.162 0.264 0.312 LOF

43.66 2 13.249 -6.500 PA 1 55.00º 103.9 1.310 1.297 2.284 0.222 0.202 0.301 0.504 LOF

O2b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

46.66 1 27.445 -6.500 PA 1 51.00º 81.7 1.834 1.639 2.914 0.195 0.162 0.253 0.556 LOF

O3a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

40.66 1 31.575 -6.500 PA 1 62.00º 54.4 1.299 1.955 2.766 0.195 0.148 0.245 0.234 LOF

O3b No reportable indications.

O4a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 13.289 -6.500 PA 1 58.00º 78.8 1.741 2.249 3.285 0.284 0.216 0.356 2.162 LOF

46.66 2 15.260 -6.500 PA 1 69.00º 55.7 1.031 2.279 2.877 0.230 0.175 0.290 0.270 LOF

46.66 3 23.186 -6.500 PA 1 69.00º 78.8 1.084 2.417 3.026 0.177 0.243 0.301 0.748 LOF

46.66 4 26.932 -6.500 PA 1 66.00º 68.0 1.200 2.256 2.951 0.203 0.216 0.296 0.520 LOF

46.66 5 28.233 -6.500 PA 1 59.00º 48.2 1.596 2.132 3.100 0.207 0.148 0.254 0.333 LOF

46.66 6 15.260 -6.500 PA 1 69.00º 55.7 1.031 2.279 2.877 0.167 0.162 0.232 0.291 LOF

O4b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 2.800 -6.500 PA 1 51.00º 102.7 1.857 1.668 2.951 0.284 0.256 0.382 0.682 LOF

46.66 2 11.751 -6.500 PA 1 69.00º 48.9 1.310 3.005 3.656 0.266 0.189 0.326 0.297 LOF

X1a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 14.038 -6.500 PA 1 56.00º 41.3 2.065 2.500 3.693 0.230 0.162 0.282 0.429 LOF

46.66 2 21.491 -6.500 PA 1 67.00º 36.4 1.313 2.663 3.359 0.248 0.175 0.304 0.858 LOF

46.66 3 43.770 -6.500 PA 1 64.00º 44.4 1.245 2.089 2.840 0.209 0.229 0.310 1.170 LOF

46.66 4 62.145 -6.500 PA 1 46.00º 77.0 1.947 1.327 2.803 0.355 0.256 0.437 0.507 LOF

46.66 5 68.691 -6.500 PA 1 50.00º 50.5 1.278 0.884 1.988 0.248 0.243 0.347 1.521 LOF

X1b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

46.66 1 5.087 -6.500 PA 1 55.00º 41.3 2.161 2.511 3.767 0.319 0.256 0.409 1.711 LOF

46.66 2 50.237 -6.500 PA 1 55.00º 48.7 2.076 2.390 3.619 0.301 0.256 0.396 1.445 LOF

46.66 3 50.158 -6.500 PA 1 46.00º 98.9 2.205 1.594 3.174 0.195 0.202 0.281 1.407 LOF

46.66 4 63.880 -6.500 PA 1 46.00º 54.5 2.565 1.967 3.693 0.160 0.162 0.227 0.380 LOP

46.66 5 61.356 -6.500 PA 1 51.00º 77.5 2.207 2.100 3.507 0.195 0.148 0.245 0.532 LOF

X2a No reportable indications.

X2b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

40.66 1 47.161 -6.500 PA 1 51.00º 66.0 2.067 1.927 3.285 0.160 0.121 0.200 0.887 LOF

40.66 2 37.421 -6.500 PA 1 46.00º 120.4 2.333 1.727 3.359 0.177 0.162 0.240 0.591 LOF

X3a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

40.66 1 21.260 -6.500 PA 1 46.00º 85.7 2.076 1.460 2.988 0.195 0.135 0.237 0.402 LOF

40.66 2 28.150 -6.500 PA 1 62.00º 42.8 1.194 1.758 2.544 0.225 0.135 0.263 0.522 LOF

40.66 3 65.866 -6.500 PA 1 51.00º 101.6 1.717 1.495 2.729 0.248 0.256 0.357 1.124 LOF

X3b No reportable indications.

X4a Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

40.66 1 57.205 -6.500 PA 1 46.00º 175.5 1.973 1.354 2.840 0.288 0.175 0.337 1.686 LOF

40.66 2 64.606 -6.500 PA 1 51.00º 175.5 2.137 2.014 3.396 0.213 0.216 0.303 1.244 LOF

X4b Gain

(dB)

Indication

Scan

(in)

Index

(in) Group Channel

A%1

DA/1

(in)

PA/1

(in)

SA/1

(in)

U(m-r)

(in)

I(m-r)

(in)

I•U(m-

r) (in)

S(m-r)

(in)

Type

40.66 1 1.063 -6.500 PA 1 47.00º 86.3 1.962 1.428 2.877 0.248 0.162 0.296 0.803 LOF

40.66 2 4.882 -6.500 PA 1 47.00º 96.2 2.013 1.482 2.951 0.248 0.162 0.296 1.686 LOF

40.66 3 7.244 -6.500 PA 1 51.00º 53.0 2.067 1.927 3.285 0.311 0.229 0.386 0.482 LOF

C1 The C1 area shown in Figure 4.4 was inspected with manual PAUT. Approximately 21” of weld were inspected. No indications were detected.

C2 The C2 area shown in Figure 4.4 was inspected with manual PAUT. Approximately 8” of weld were inspected. No indications were detected.

6 Equipment Calibrations

Magnetic Particle Testing Equipment

Phased Array Testing Equipment

7 Inspector Certifications

Visual and Phased Array Ultrasonic Testing

Visual and Phased Array Ultrasonic Testing