Transcript
Page 1: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask

Morris Kline

General Manager of Domestic Sales

HMT Inc.

Page 2: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Don’t Discard the Technology and go backwards

MFL is the “Best”

method to

evaluate a

tank bottom

condition

quickly and

cost effectively

Page 3: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Ask Yourself

• What would your answer be to the following question:

“What is the most important step you can take to insure a quality tank bottom inspection?”

Page 4: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

It’s Not a Trick Question

A) Remaining Plate Thickness

B) Corrosion Rate

C) Type of Scanner Used

D) Tank Bottom Surface Preparation /

Cleanliness

Page 5: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Why is cleaning so Important

• “What an inspector cannot see cannot be effectively inspected.”

• The visual portion of the API Standard 653 inspection is critical.

• Additionally, items such as vacuum box, helium testing or other NDE methods can be severely limited without proper cleaning.

Page 6: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Hole found visually from good surface preparation

Page 7: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

SSPC-SP 6

• “ A commercial blast cleaned surface, when viewed without magnification, shall be free of all visible oil, grease, dust, dirt mill scale, rust, coating, oxides, corrosion products, and other foreign matter, except for staining… Random staining limited…”

Page 8: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Blast Cleaned to SP 6

Page 9: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

SSPC-SP 14

• An industrial blast cleaned surface,… shall be free of all visible oil, grease, dust, and dirt. Traces of tightly adherent mill scale, rust, and coating residues are permitted…”

Page 10: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Blast Cleaned to SP 14

Page 11: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic
Page 12: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic
Page 13: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Typical Column with repad

Page 14: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Floating Roof Leg Striker Pad

Page 15: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Tank Bottom Obstructions – Piping and Sump

Page 16: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Typical Patch Plate

Page 17: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Sketch Plate Example

Page 18: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Typical Full Sized MFL Scanner

Overall scanner width = 14”

Bridge Width = 12”

Overall

Length = 36”

Front to base

sensor = 10”

Page 19: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Bottom Plate Lap Weld Seams

Page 20: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Limitation Zone

Page 21: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Other Factors

• Scanner magnet lift off

• Coatings (type, thickness and condition)

• Product side / top-side pitting or roughness

• Pit geometry

• Edge Settlement

• Ultrasonic prove-up (training and equipment)

Page 22: Everything You Wanted to Know About Tank Floor Scanning ... · Everything You Wanted to Know About Tank Floor Scanning But Were Afraid to Ask Morris Kline General Manager of Domestic

Questions

• Thank you again for your time


Top Related