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GE StressTel T-MIKE E, Инструкция по эксплуатации и техническому обслуживанию

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Section No.

Reference No.

OPERATION & MAINTENANCE SPECIFICATIONS MANUAL

09

07

Section:

Subject:

EQUIPMENT/TOOLS

ULTRASONIC THICKNESS MEASUREMENT

Procedure Issue Date: February 2007

Revision

2

Approved by:

Page 1 of 10

SCOPE

This section is intended for the guidance of NDE personnel qualified in accordance with the requirements of
M&NP “Training and Qualification of Personnel”.

The inspection processes and procedures described in this

document may be used for line pipe, piping components and pressure vessel plates. Ultrasonic Thickness testing
may also be used to evaluate the thickness of the parent material after grinding etc.

This procedure is not

intended to be exhaustive in the treatment of ultrasonic technique as it is provided for general guidance only.

SAFETY

Prior to excavation for inspection, verification shall be made that the pipeline has been established at a safe
working pressure in accordance with the requirements of O&MSM Section 12, Reference 17 -

Safe Working

Pressure

. Defect excavation shall then be completed in accordance with the requirements of O&MSM Section 11,

Reference 13 -

Defect Excavation and Assessment

.

EQUIPMENT

Figure 1

T-MIKE E

A.

INITIAL SETUP

1.

Introduction

For those settings which are seldom changed during operation of the T-Mike E the INITIAL SET UP
procedure is designed to allow the operator access to those settings without unnecessary complication of
the units normal operation.

These settings include:

Backlight on/off

Selection of Metric or English units of measure

Calibration Lock

Содержание StressTel T-MIKE E

Страница 1: ... exhaustive in the treatment of ultrasonic technique as it is provided for general guidance only SAFETY Prior to excavation for inspection verification shall be made that the pipeline has been established at a safe working pressure in accordance with the requirements of O MSM Section 12 Reference 17 Safe Working Pressure Defect excavation shall then be completed in accordance with the requirements...

Страница 2: ...ended that the backlight be OFF when measurements are made in well illuminated areas as this will greatly increase battery life 3 Metric English Units Press the CAL key a second time The T Mike E will display the units in which it is set to measure thickness IN or MM Press the UP or DOWN arrow keys to select the desired unit of measurement 4 Calibration Lock Press the CAL key a third time The T Mi...

Страница 3: ...Zero Function The PROBE ZERO function compensates the T Mike E for the fixed delay of the ultrasonic transducer This function should be performed at the start of each day to compensate for transducer wear or whenever the transducer is changed Apply a drop of couplant to the end of the transducer Press the ON OFF button on they keyboard to turn on the T Mike E Place the transducer in steady contact...

Страница 4: ...ation mode and enables the UP DOWN arrow keys Adjust the thickness shown on the T Mike E display by using the UP and DOWN arrows item 10 in Figure 2 Note that when these keys are held continuously the speed at which the thickness changes will increase making it easy to make the large adjustments for materials such as plastic and aluminum When the correct thickness appears on the display press the ...

Страница 5: ...y press the CAL key again to enter the velocity for use in thickness measurements and to return to the measurement mode 5 Thickness Measurement Remove dirt loose material and couplant residue from the surface of material at points where measurements are desired Verify that the PROBE and CAL functions have been performed Place a drop of couplant on the material surface at the measurement point Plac...

Страница 6: ...nt charge is available to operate the unit properly When the T Mike E detects minimum allowable battery level the numbers on the display will blink on and off This alerts the operator that the batteries should be replaced or recharged before further operation When the battery level fails below the minimum allowable level the T Mike E will turn off and not allow further operations until batteries a...

Страница 7: ...ocity Turn off both gauges Connect the special cable between the two data charger ports Turn on the T Mike E press the Cal key twice and the LCD will indicate the velocity Now turn on the T Mike Programmable The T Mike Programmable should display CAL followed by the new velocity and then will go into the measurement mode Be sure this new velocity matches with the sound velocity in the T Mike E 3 T...

Страница 8: ...Mike E In either case a special cable is required 2 Material Selection First follow the above PROBE ZERO procedure to calibrate the delay of the ultrasonic transducer being used Press the MAT key to select the material being tested Select the material by using the UP and DOWN arrows Press the MAT key a second time to store the velocity for the selected material Some materials may exhibit sound vel...

Страница 9: ...Enter sound velocity in inches uS or M S Press Enter to accept the new velocity Check Backlight to illuminate T Mike reading Select Serial Port COM1 or COM2 Use the Tab key to cycle through the SETMIKE Windows application controls Press SEND to initiate update of the T Mike Turn on the T Mike If the T Mike was already on turn it off and turn on gain The T Mike P B may require several attempts to s...

Страница 10: ...ece are the same temperature shape material and size NOTICE Since velocity of sound varies from test piece to work piece accuracy of measurement depends on consistency of ultrasonic velocity Ultrasonic velocity also varies with internal stress so that heat treatment of the material will also affect accuracy The following table expresses accuracy variations for some common materials NOTE These spec...

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