1, What Basis to COMPANY Specification for Electrical activity what are the International Standard that COMPANY was referring.
A. NFPA 70 – National Electrical Code (NEC)
B. IEC – International Electro-technical Commission
2, What Base to COMPANY Specification for Electrical Testing activity what are the International standard that COMPANY was referring.
A. NFPA 70 – National Electrical Code (NEC)
B. NETA – National Electrical Testing Association
3, what Base in National Electrical Code what is article 300
- Wiring Methods
4. What Base in National Electrical Code what is article 250
- Grounding and Bonding
5. What Base in National Electrical Code what is article 328
- Medium Voltage Cable
6. What Base in National Electrical Code what is article 392
- Cable Trays
7. What Base in National Electrical Code what is article 408
- Switchboards and Panelboards
8. What Base in National Electrical Code what is article 430
- Motors, Motor Circuits, and Controllers
9. For Grounding System what are the inspection point to be conducted on the installed underground grounding system based on the COMPANY specs. and ITP.
A. Installation of Main Grid and Grounding System
- Visually check the condition of laying of cable
- Visually check the cable trench where no stones and rubbles
B. Installation of Grounding Rod
- Visually check the physical condition where no damage on the grounding rod
- Visually check the location installed as per the drawing.
C. The Exothermic Weld connection
- Visually check the physical condition on the exothermic were no holes and damage.
10. For Grounding System what is the test to be conducted on the installed underground grounding system based on the COMPANY specs? and ITP.
A. Continuity test for the connection
B. Resistance test on the ground rod
C. Resistance test for the connected grounding grid system
11. For Grounding System what are the required resistance on the installed underground grounding system based on the COMPANY specs?
A. 1 ohm for the ground loop installed around equipment and structures
B. 5 ohm for building and structures remote from the ground loop
C. Less than 1 ohm for the substation ground grid
D. 10 ohms where piping is subject to either direct or inducted lightning effects.
E. 1 ohm or less than 1 ohm for the Instrument Ground System (IGS)
12. For Motor what is the inspection point to be conducted on the installed motor prior to the motor solo run.
A. Installation of the motor and local control switch.
- Visually check the physical condition were no damage, the installed motor was correct as per the approved IFC drawing.
B. Installation of Power and control cable.
- Visually check the physical condition of the power and control cable was no damage, the cable was properly dressed, and the raceway support was installed, Correct type and size of the cable installed as per approved IFC drawing.
C. Testing of the Power and Control Cable
- Conduct testing by continuity and Insulation resistance test to assured there is no leakage current or damage during cable pulling.
D. Termination of Power and Control cable.
- Visually check the correct cable gland if it is armored cable, correct size and crimping of terminal lugs, the wire markers are correct address from MCC to the motor, and the cable tags were installed.
E. Torqueing the Electrical Bolting Connections.
- Physical check the tightness on the termination based on manufacturer recommendation and COMPANY specs. to avoid arcing on the termination.
F. Installation of grounding.
- Physical check the grounding installed on the motor and local control switch was no damage and correct size and location as per approved IFC drawing.
G. Testing of grounding
- Conduct testing on the grounding by continuity and resistance test to assure the resistance requirement was met.
H. Installation of instrument loop interconnection from MCC to DCS for auto operation and monitoring.
13. For Motors what is the test to be measured before and during Motor Solo run.
A. Winding resistance and winding insulation resistance test.
B. Functional test on the local control switch thru MCC
C. Bump or Motor rotation test
D. Measured the rotation speed of the motor based on the datasheets.
E. Measured the vibration at DE and NDE of the motor
- Base on the RPM of the motor the máximum vibration is 3.8 mm/s as per NETA table 100.10
F. Measured the noise or sound level of the motor.
- As per RC requirements the máximum sound is 85dbm
14. How to conduct an inspection for receiving inspection on the equipment or materials arrived at Project site and what is the documents to be verified.
A. Check the required documents are available such as
- Data Sheets if available
- Material Test Certificates
- Inspection reléase certificate or conformity
- Purchase Order
- Approved Material Approval Request
- Approve Vendor List or Vendor and manufacturer approval from COMPANY if not in the AVL list
- Delivery Note
B. Visually check the equipment or material arrived such as
- Physical check the conditions of the equipment or material have no damage during delivery and transport.
- Physical check the equipment or material that meets the Project specs.
15. As a Quality inspector, what is the action to eliminate the causes of a potential nonconformity or other potential undesirable situation?
- To issue (PAR) Preventive Action Request.
16. AS a Quality inspector what is the action to eliminate the cause of detected nonconformity or other undesirable situation?
- To issue (CAR) Corrective Action Report
17. As a Quality inspector what is the action on the non-conformity or other undesirable situation found at the site.
- To issue (NCR) None Conformance Report
18. How many days the validity on the PAR, CAR, and NCR issued to take action.
- 7 Days
19. In the battery system what is the test instrument/equipment used to measure the specific gravity of the electrolyte acid.
- Hydrometer
20. In charging and discharging the battery system what is test instrument/equipment will be used.
Load Bank for charging and discharging
Multimeter to measure the voltage of the battery
Clamp Meter to measure the ampere
Hydrometer for specific gravity of electrolyte acid
21. Why did we conduct a hi-potential test (Hi-pot test) for the MV cable.
To verify the integrity of high-voltage AC primary wire/cable insulation in an electrical system to ensure that it is safe to operate/energize the cable.
22. What are the requirements for inspection of the cable installation.
The cable trench or cable tray should be inspected and accepted.
Inspect the cable have no damage during cable pulling.
Check the cable dressing and the cable tie/clamp is approved if lay down the cable tray.
23. What is the inspection point to be conducted for switchgear assemblies?
- Compare equipment nameplate data with drawings and specifications.
- Inspect physical and mechanical condition.
- Inspect anchorage, alignment, grounding, and required area clearances.
- Verify that fuse and circuit breaker sizes and types correspond to drawings.
- Verify that current and voltage transformer ratios correspond to drawings.
- Verify the correct jointing of the busbar during assembly and the insulation boots are in place.
- Inspect mechanical indicating devices for correct operation.
24. For the Panelboard or Switchboard what are tests conducted. Prior to Energized.
- Perform low resistance test on the main circuit breaker and branch breakers.
- Perform insulation resistance test on the main circuit breakers and branch breakers.
- Perform current injection/trip test on the main circuit breakers and branch breakers.
- Perform continuity/ground resistance test on the grounding installed.
- Perform torque test on the cable connections.
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