W. W. GAY MECHANICAL CONT. Jacksonville, FL … 14-22 Osprey Crossings...An eddy current inspection...

W. W. GAY MECHANICAL CONT. 524 Stockton Street Jacksonville, FL 32204(904)388-2696

Report of Eddy Current InspectionManufacturer: Carrier

Model: 30GTN170Serial: 4300F39904 #2

Location: UNIVERSITY OF NORTH FLORIDA BUILDING S BUILDING S JACKSONVILLE, FL 32099

Inspected: December 31, 2013

Inspected By: SCOTT D. McCASKILL, LEVEL II

Reviewed By:TECHNICAL MANAGER, LEVEL III

Table of Contents

Section A . . . . . . . . . . . . . . .Inspection Report

Part I . . . . . . . . . . .Vessel InformationPart II . . . . . . . . . . .Summary of InspectionPart III. . . . . . . . . . .Defect SummaryPart IV. . . . . . . . . . .RecommendationsPart V. . . . . . . . . . .Data SheetsPart VI. . . . . . . . . . .Tube Chart LayoutPart VII. . . . . . . . . . .Tube Strip Charts

Section B . . . . . . . . . . . . . . .Calibration Settingsand GraphsCalibration Procedures

Section C . . . . . . . . . . . . . . .Explanation ofAbbreviations

Copyright (c) 2009, TAI Services, Inc.

S/N 4300F39904 #2

Vessel Information

Manufacturer Model Style Serial Number Type

Carrier 30GTN170 Hermetic 4300F39904 #2 Reciprocal

EvaporatorTestEnd

Tube Count

Tube Type

Tube Material

OD

*NWT

#/Type Support

Tube Numbering

Row Numbering

Tube Length +- 2

Outlet End

366

Prime Surface IE

Copper

.625

.028

4 Mild Steel

Top to Bottom

Left to Right

110 Inches

Analyst: SCOTT D. McCASKILL, LEVEL II

* Nominal Wall Thickness

S/N 4300F39904 #2

Vessel Bay Length Information

Evaporator (Length = 110 inches)S = Intermediate Support

Opp. Test End Test End

Bay 5

Bay 5

22.00"

22.00"

S4

Bay 4

Bay 4

22.00"

22.00"

S3

Bay 3

Bay 3

22.00"

22.00"

S2

Bay 2

Bay 2

22.00"

22.00"

S1

Bay 1

Bay 1

22.00"

22.00"

S/N 4300F39904 #2

Defect Summary/Comparison

Test Date12/31/2013

Evaporator Defects

ODML < 10% ODML 10% - 19% POSSIBLE LEAK RESTRICTED

Location Model Serial Number

UNIVERSITY OF NORTH FLORIDA 30GTN170 4300F39904 #2

Note: The Graph will indicate a Comparison Analysis when the unit has been previously tested by TAI Services.

S/N 4300F39904 #2

Summary of InspectionAn eddy current tube inspection was performed due to a known/suspected tube leak with thefollowing results.

Evaporator: 366 Tubes

Significant/Measurable IndicationsNumber of

Tubes Marked

Percent of Bundle

ODML < 10% 154 42.08

ODML 10% - 19% 8 2.19

POSSIBLE LEAK* 2 .55

RESTRICTED 11 3.01

Totals 175 47.83

* REQUIRES ACTION

NOTE: System was left under pressure for 3 months and lost no gas. Once on job site had valves open to allow water to flow through. Water was at 40psi and no water came through in over an hour.

S/N 4300F39904 #2

Recommendations

An eddy current inspection was performed on the tubes in this machine. This test was performed using accepted eddy current test methods for the inspection of in-service tubing. It should be noted that Eddy Current is not a leak detection method. The possibility does exist that tubes could contain defects and/or leaks which are not detectable. If leaks are suspected, we recommend a pressure test be used to identify the leaking tubes.The following suggested repair actions are based on accepted industry standards. After removing sample tubes to confirm the inspection results, a determination of corrective action should be made by the repair agency and end user. Only these parties have knowledge of the critical applications and long-term use of the equipment. If plugging is selected over replacement, both efficiency and capacity should be considered.EVAPORATOR:We recommend tubes with OD Metal Loss and/or OD Metal Loss at a Support of 40% or more be isolated from the system at this time. OD Metal Loss of less than 40% usually requires no corrective action, but should be monitored for defect growth. This type damage is usually the result of moisture being exposed to the refrigerant causing acids to form.There were no indications of tube damage found in the tube marked for possible leaks. However, a small pinhole or flaw could exist in a transition zone where its signature would have been masked. We recommend this tube be pressure tested and/or isolated from the system at this time.Tubes marked as Restricted contained defects, or foreign material which prevented the inspection probe from passing. The condition of these tubes at and beyond the obstruction remains unknown.RE-INSPECTION RECOMMENDATIONS:We recommend that a follow-up inspection be performed on these vessels as follows:Evaporator: 31 December 2014A copy of this report should be retained in your files to be used for comparison at that time.If you should have any questions concerning this report, or if we may be of further assistance, please feel free to call upon us.

S/N 4300F39904 #2

Data SheetLocation Model Serial Number Date

UNIVERSITY OF NORTH FLORIDA

BUILDING S

JACKSONVILLE, FL 32099

30GTN170 4300F39904 #2 December 31, 2013

Row Tube Description Area Action Req.

SET UP CALIBRATE & STARTEDEVAPORATOR 12/31/2013 08:33 am

1 1 RESTRICTED B01

1 9 RESTRICTED B02

2 2 ODML < 10% B05

2 4 RESTRICTED OTE

2 7 ODML < 10% B05

3 1 ODML < 10% B05

3 3 ODML < 10% B05

3 4 ODML < 10% B05

3 6 ODML < 10% B05

3 9 ODML < 10% B05

4 1 ODML < 10% B05

4 3 ODML < 10% B05

4 4 ODML < 10% B05

4 8 ODML < 10% B05

4 9 ODML < 10% B05

4 10 ODML < 10% B05

5 1 ODML < 10% B05

5 7 ODML < 10% B05

5 8 ODML < 10% B05

S/N 4300F39904 #2

Data Sheets - Page 2


5 9 ODML < 10% B05

5 10 ODML < 10% B05

5 11 ODML < 10% B05

6 4 ODML < 10% B05

6 5 ODML < 10% B05

6 7 ODML < 10% B05

6 9 ODML < 10% B05

6 10 ODML < 10% B05

6 11 ODML < 10% B05

6 12 ODML < 10% B05

7 1 RESTRICTED B01

7 2 ODML < 10% B05

7 4 ODML < 10% B05

7 5 ODML < 10% B05

7 6 ODML < 10% B05

7 7 ODML < 10% B05

7 8 ODML < 10% B05

7 9 ODML < 10% B05

7 10 ODML < 10% B05

7 11 ODML < 10% B05

7 12 ODML < 10% B05

7 19 RESTRICTED B01

8 3 ODML < 10% B05

8 5 ODML < 10% B05

8 6 ODML < 10% B05

8 7 ODML < 10% B05

S/N 4300F39904 #2



8 9 ODML < 10% B05

8 10 ODML < 10% B05

8 11 ODML < 10% B05

8 12 ODML < 10% B05

8 13 ODML < 10% B05

8 14 ODML < 10% B05

9 4 ODML < 10% B05

9 5 ODML < 10% B05

9 8 ODML 10% - 19% B05

9 9 ODML < 10% B05

9 10 POSSIBLE LEAK B05

9 11 ODML < 10% B05

9 12 ODML < 10% B05

9 13 ODML < 10% B05

9 14 ODML < 10% B05

9 16 ODML < 10% B05

10 1 ODML < 10% B05

10 4 ODML < 10% B05

10 5 ODML < 10% B05

10 7 ODML < 10% B05

10 9 ODML < 10% B05

10 10 ODML < 10% B05

10 11 ODML < 10% B05

10 12 ODML < 10% B05

10 13 ODML < 10% B05

10 14 ODML < 10% B05

S/N 4300F39904 #2



10 15 ODML < 10% B05

10 16 ODML < 10% B05

10 17 ODML < 10% B05

11 1 ODML < 10% B05

11 2 ODML < 10% B05

11 3 ODML < 10% B05

11 4 ODML < 10% B05

11 5 ODML < 10% B05

11 6 ODML < 10% B05

11 8 ODML < 10% B05

11 9 ODML < 10% B05

11 10 ODML < 10% B05

11 11 ODML < 10% B05

11 14 ODML < 10% B05

12 1 ODML < 10% B05

12 2 ODML 10% - 19% B05

12 3 ODML 10% - 19% B05

12 4 ODML < 10% B05

12 5 ODML < 10% B05

12 6 ODML < 10% B05

12 7 ODML < 10% B05

12 8 ODML < 10% B05

12 9 ODML < 10% B05

12 10 ODML < 10% B05

12 11 ODML < 10% B05

12 13 ODML < 10% B05

S/N 4300F39904 #2



12 14 ODML < 10% B05

13 1 ODML < 10% B05

13 2 ODML < 10% B05

13 3 ODML < 10% B05

13 4 ODML < 10% B05

13 5 ODML < 10% B05

13 6 ODML 10% - 19% B05

13 9 ODML 10% - 19% B05

13 10 ODML < 10% B05

13 11 ODML < 10% B05

13 12 ODML < 10% B05

13 13 ODML < 10% B05

14 2 ODML 10% - 19% B05

14 3 ODML 10% - 19% B05

14 4 ODML < 10% B05

14 5 ODML < 10% B05

14 6 ODML < 10% B05

14 7 ODML < 10% B05

14 8 ODML < 10% B05

14 9 ODML < 10% B05

14 11 ODML < 10% B05

14 12 ODML < 10% B05

14 13 ODML < 10% B05

14 14 ODML < 10% B05

15 2 ODML 10% - 19% B05

15 3 ODML < 10% B05

S/N 4300F39904 #2



15 4 ODML < 10% B05

15 5 ODML < 10% B05

15 6 ODML < 10% B05

15 7 ODML < 10% B05

15 8 ODML < 10% B05

15 9 ODML < 10% B05

15 10 ODML < 10% B05

15 11 ODML < 10% B05

15 12 ODML < 10% B05

16 1 RESTRICTED B01

16 2 ODML < 10% B05

16 3 ODML < 10% B05

16 4 ODML < 10% B05

16 6 ODML < 10% B05

16 8 ODML < 10% B05

16 9 ODML < 10% B05

16 10 ODML < 10% B05

16 11 ODML < 10% B05

16 12 ODML < 10% B05

16 19 RESTRICTED B01

17 2 ODML < 10% B05

17 3 ODML < 10% B05

17 4 ODML < 10% B05

17 5 ODML < 10% B05

17 6 ODML < 10% B05

17 8 ODML < 10% B05

S/N 4300F39904 #2



18 1 ODML < 10% B05

18 3 ODML < 10% B05

18 4 ODML < 10% B05

18 8 ODML < 10% B05

18 9 ODML < 10% B05

18 16 RESTRICTED OTE

19 2 ODML < 10% B05

19 3 ODML < 10% B05

19 4 ODML < 10% B05

19 6 ODML < 10% B05

19 7 ODML < 10% B05

19 8 POSSIBLE LEAK B05

19 9 ODML < 10% B05

19 10 ODML < 10% B05

20 4 ODML < 10% B05

20 5 ODML < 10% B05

20 6 ODML < 10% B05

20 7 ODML < 10% B05

20 8 ODML < 10% B05

20 9 ODML < 10% B05

20 10 ODML < 10% B05

21 3 ODML < 10% B05

21 5 ODML < 10% B05

22 1 RESTRICTED B01

22 4 RESTRICTED B02

22 9 RESTRICTED B01

S/N 4300F39904 #2



CALIBRATION CHECK & COMPLETEDEVAPORATOR 12/31/2013 12:22 pm

Evaporator SectionS/N 4300F39904 #2

Outlet End

Top of Vessel

Row 1-Tube 1 R

Row 1-Tube 5

R

00

R

00

00

0000

00

00

00

0000

000000

00

0000000000

0000

00

00000000

R 00

000000000000000000

R

00

000000

000000000000

0000

0100PL00000000

00

00

0000

00

000000000000000000

000000

000000

000000

00

00

000101

00000000

000000

00

0000

000000000001

0100000000

0101000000000000

00000000

0100000000000000000000

R 000000

00

0000000000

R

0000000000

00

00

0000

0000

R

000000

0000PL0000

00000000000000

00

00

R

R

R

00 = ODML < 10%

01 = ODML 10% - 19% PL = POSSIBLE LEAK REQUIRES ACTION

R = RESTRICTED

S/N 4300F39904 #2Test Instrument UsedHighline Automation, EC14

Calibration Page

Tube Type Material Nom Wall Thick OD Test Type Probe Diameter

Prime Surface IE Copper .028 .625 CROSS/DIFF .500

Evaporator

Note: Defects are compared to machined standards. Actual Defect Geometry may differ.

S/N 4300F39904 #2

Evaporator Section

NO SIGNIFICANT DEFECTS (Row 1 Tube 2)

S/N 4300F39904 #2

Evaporator Section


S/N 4300F39904 #2

Evaporator Section

ODML < 10% (Row 7 Tube 4)

S/N 4300F39904 #2

Evaporator Section

ODML 10% - 19% (Row 9 Tube 8)

S/N 4300F39904 #2

Evaporator Section

POSSIBLE LEAK (Row 9 Tube 10)

S/N 4300F39904 #2

Evaporator Section

ODML 10% - 19% (Row 13 Tube 6)

S/N 4300F39904 #2

Evaporator Section

ODML 10% - 19% (Row 14 Tube 3)

S/N 4300F39904 #2

Evaporator Section

ODML 10% - 19% (Row 15 Tube 2)

S/N 4300F39904 #2

Evaporator Section


S/N 4300F39904 #2

Evaporator Section

ODML < 10% (Row 18 Tube 4)

S/N 4300F39904 #2

Evaporator Section

POSSIBLE LEAK (Row 19 Tube 8)

S/N 4300F39904 #2

Evaporator Section


S/N 4300F39904 #2

Phase Chart - Evaporator

Material Tube Type OD Wall Test Type Frequency Probe Diameter

Copper Prime Surface IE .625 .028 CROSS/DIFF 22000 .500

Explanation of Abbreviations

Abbreviation Explanation ABN IND Abnormal Indication B Bay FB Freeze Bulge FBH Flat Bottom Hole FM Foreign Material ID Internal Diameter ID CORROSION Internal Diameter, Corrosion ID DEPOSIT Internal Diameter, Deposit ID PIT Internal Diameter, Pit IDML Internal Diameter, Metal Loss IE Internally Enhanced OD Outside Diameter ODML Outside Diameter, Metal Loss ODML@S Outside Diameter Metal Loss at Support OD DEPOSIT Outside Diameter, Deposit PLF Possible Longitudinal Flaw PRF Possible Radial Flaw PSC Possible Stress Corrosion S Support WAS Wear at Support > Greater Than < Less Than OTE Opposite Test End TE Test End

W. W. GAY MECHANICAL CONT. Jacksonville, FL … 14-22 Osprey Crossings...An eddy current inspection...

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Transcript of W. W. GAY MECHANICAL CONT. Jacksonville, FL … 14-22 Osprey Crossings...An eddy current inspection...