COMMISSIONING MANUAL for
MODEL 6290
TANK GAUGING SYSTEM
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Record of Revisions |
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Description |
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Initial Release |
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SCIENTIFIC INSTRUMENTS, INC. 090-254
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TABLE OF CONTENTS |
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1 |
INTRODUCTION .................................................................................................... |
1-1 |
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2 |
INSTALLATION VERIFICATION ............................................................................ |
2-1 |
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2.1 |
Mechanical Installation .................................................................................. |
2-1 |
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2.2 |
Electrical Wiring............................................................................................. |
2-1 |
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3 |
INITIAL SYSTEM TESTING ................................................................................... |
3-1 |
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3.1 |
System Preparation ....................................................................................... |
3-1 |
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3.2 |
Application of Power...................................................................................... |
3-1 |
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3.2.1 |
Control Room........................................................................................... |
3-1 |
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3.2.2 |
Tank Top.................................................................................................. |
3-1 |
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3.3 |
Motor Drive.................................................................................................... |
3-2 |
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3.4 |
Temperature.................................................................................................. |
3-3 |
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3.5 |
Density .......................................................................................................... |
3-3 |
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4 |
SYSTEM TESTING IN LIQUID ............................................................................... |
4-1 |
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4.1 |
Liquid Level ................................................................................................... |
4-1 |
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4.2 |
Temperature.................................................................................................. |
4-2 |
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4.3 |
Density .......................................................................................................... |
4-2 |
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5 |
COMMUNICATIONS TESTING.............................................................................. |
5-1 |
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APPENDIX A: M6290 SITE COMMISSIONING CHECKOFF SHEET ......................... |
A-1 |
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1 INTRODUCTION
The Model 6290 (M6290) Tank Gauging System monitors the level, temperature, and density of the cryogenic liquid in a large storage tank. This manual details the normal start-up procedures to be followed before the equipment is put into use on a regular basis.
A separate manual documents the installation procedures to be carried out for this system. It is assumed that these procedures have already been accomplished. If they have not, then reference should be made to the Installation Manual for the Model 6290 Tank Gauging System (090-249-XX), and all procedures called for in that manual should be completed prior to continuing with commissioning activities.
The Hand Held PC (HHPC) supplied with the M6290 is an integral part of system operation. Some instructions on using the HHPC are given here, but for more details, please refer to the Hand Held PC User Interface Manual (090-252).
It is also assumed that at least one meter of liquid is available in the tank. Although power may be applied to the equipment, and certain functions may be tested without liquid, it is not possible to test all features and properly commission this system in the absence of liquid.
A site-specific mechanical installation drawing and a site-specific field-wiring diagram are provided with the systems manual. Additional standard documents are provided for clarification of details where necessary. This documentation should be located and available for reference during the commissioning activities.
A check-off sheet is included in Appendix A for those sites requiring a sign-off. Each step should be initialed upon completion.
090-254 Rev −
1-1
2 INSTALLATION VERIFICATION
Prior to application of power, the entire system should be inspected for proper installation. Special attention should be given to verification of field wiring to minimize the potential damage of electronics due to improper voltages being applied.
2.1Mechanical Installation
As already mentioned, the mechanical installation should have already been completed. The entire installation should be checked for integrity with special attention being given to the following:
∙Mechanical unit is level.
∙Support legs are properly installed and adjusted to share the weight evenly.
∙All flange bolts are installed and tight.
∙Cabling is attached with proper flameproof fittings.
∙All cabling is properly supported.
∙Working platform is secure and safe per site requirements.
WARNING: The flameproof integrity of the system can only be maintained by using approved flameproof fittings at all cable entry points and following proper assembly procedures at these points.
2.2Electrical Wiring
All wiring internal to the control unit is completed and tested at the factory. Thus, the wiring that must be verified is the field wiring. Referring to the site-specific fieldwiring diagram (040-237-XX), perform the following checks using a digital ohmmeter and standard “loop check” procedures. Be sure to check that all screw terminals are properly tightened.
∙Verify that the AC wiring to the control unit is properly connected.
∙Verify that the wiring from the control unit to the Tank Gauge Interface Module (TGIM) in the control room is correct.
∙Verify that 24 volts is properly wired to the TGIM module.
∙If the optional user interface is installed, verify that wiring to that unit is correct.
∙If the system is connected to a host DCS, verify that wiring is correct.
090-254 Rev −
2-1
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