Preventive Maintenance of Low Voltage Switchgear (LVSG) Main Distribution Panel boards and 4 units of Dry type transformers

BACKGROUND

WPRO has its own Powerhouse, wherein the Switchgear is located and all building’s electrical power source coming from. Switchgear is composed of Main Air circuit breakers (ACB) which provide controls and protection to electrical system from short circuit and over current and the Main Automatic Transfer Switch (ATS) are also installed inside switchgears, the purpose of the ATS is during power outage from Utility power (NORMAL/MERALCO) the ATS system automatically switches the electrical power to EMERGENCY (GENSET) power source. WPRO also have four (4) units dry type step-down power transformers with different power capacity in Kilo-Volts Ampere (KVA), one (1) is 100 KVA capacity use in Emergency Panel (LPEM), one (1) is 200 KVA and two (2) is 150 KVA capacity each respectively use in the Main Uninterruptible Power Supply (UPS). Transformers are used to step-down high voltages from electrical utilities 34,500 Volts / 480 Volts to acceptable lower voltages such as the 220 Volts which we are commercially and domestically using.   There are eleven (11) Main Distribution Panels (MDP) located in 7 different areas around WPRO respectively, which is distributing the output electrical power to all the buildings including power of the Main Uninterruptible Power Supply (UPS), all lightings and convenient outlets, all electrical pump motors and controls, all air-conditioning units, fire pump controls, CCTV, security equipment, automatic gate systems, etc.

Nowadays, especially our current situation, most of our works here in the WPRO campus are relying on electrical power, even the sophisticated IT equipment and devices use inside the office cannot operate without electrical power including the servers and databases. With this, it is strongly recommended to conduct periodic preventive maintenance on our electrical system. With this maintenance approach, it will give us the opportunity to identify the current electrical efficiency, reliability and good understanding of the electrical system’s condition and determine any potential hazards on the system and provide appropriate plans and recommendations for corrective actions which can lead to electrical energy conservations. It is also recommended that this activity should be done by technical experts that have the capacity, tools, and equipment to perform the job safely and reliably.

PURPOSE/SPECIFIC OBJECTIVE OF THE ACTIVITY

Preventive maintenance of electrical equipment including low voltage switchgears (LVSG), Main Distribution Panels (MDP) and dry type transformers.

Preventive Maintenance of Panelboards

• Area 1 - MDP 1 Controller, MDP 2, MDP 3
• Area 2 - 1 ACB 3200AT
• Area 3 - 2 units 1600AT/3P/MCCB
• Area 4 - MDP 4, MDP 5, PAC 1-1
• Area 5 - PAC 2-1
• Area 6 - PAC 3-1
• Area 7 - Conference Hall, ACCU's and AHU, ACU Main

Preventive Maintenance of 4 units Dry Type Transformer

• 1 unit - 200 KVA Dry Type Transformer
• 2 units - 150 KVA Dry Type Transformer
• 1 unit - 100 KVA Dry Type Transformer

DESCRIPTION OF ACTIVITIES TO BE CARRIED OUT

Supply of labour, tools, test equipment and technical expertise for the Preventive Maintenance of electrical equipment including Low Voltage Switchgears (LVSG), Main Distribution Panelboards and Dry try transformers.

METHODS TO CARRY OUT THE ACTIVITY

Preventive Maintenance of Panelboards

• Conduct thermal scanning work before and after preventive maintenance.
• Shutdown equipment.
• Lock-out tag-out of main breaker of panel.
• Installs grounding cluster on panel when cleaning.
• General cleaning on panel closure and accessories inside panel.
• Conduct breaker ON & OFF operation test with continuity test on main breaker.
• Conduct panel insulation resistance test on common busbar.
• Visually check connection that they are clean & secure.
• General clearning of cables inside the enclosure including bolt tightening of cable termination, if needed.
• Conduct panel insulation resistance test.
• Conduct standard testing of ACB such as:
  • Insulation resistance test
  • Contact resistance test
  • Trip unit test
• Conduct simulation testing of ATS
• Dismantle of grounding cluster.
• Energized and turn-over the units.
• Submit service reports, test reports and other relative documentation in A-4 size bond paper inside hard cover file folder indicating the job title (Preventive Maintenance of Low Voltage Switchgears (LVSG) Main Distribution Panelboards and Dry type transformers).

Preventive Maintenance of 4 units Dry Type Transformer

• Mobilization / Demobilization
• Conduct thermographic scanning before and after preverntive maintenance
• General cleaning and visual inspection of power transformer including HV & LV terminals.
• General cleaning and visual inspection of internal components such as wire terminations.
• General cleaning of compatment and exterior transformer enclosure
• Conduct Standard transformer acceptance test.
  • Conduct insulation resistance test.
  • Conduct transformer turns ration test.
  • Conduct winding resistace test.
  • Conduct no load test.
• Conduct bolt tightening of all interconnection
• Energize transformer and conduct voltage measurement with phase rotation test at the secondary side terminal.
• Dismantle of grounding cluster.
• Check interconnection of L.A. grounding.
• Coordination to facilities engineer/technician for power restoration.
• Turn over unit
• Submit service reports, test reports and other relative documentation in A-4 size bond paper inside hard cover file folder indicating the job title (Preventive Maintenance of Low Voltage Switchgears (LVSG) Main Distribution Panelboards and Dry type transformers).

QUALIFICATIONS & EXPERIENCE

EXPERIENCE

Essential:

• Duly licensed corporation organised/registered under the laws of the Philippines to conduct Preventive Maintenance of electrical equipment including Low Voltage Switchgears (LVSG), Main Distribution Panelboards and Dry type transformers minimum of ten (10) years of experience.
• Must be an ISO-certified or relevant quality standards certifying bodies to be able to meet international quality standards of the Organisation. Contractors must provide pertinent supporting documents regarding ISO certification or relevant quality standards certifying bodies which should indicate the date of effectivity.
• Possess necessary permits and registration certificates to render electrical services such as Business Permits, Bureau of Internal Revenue (BIR) registration certificates, Securities and Exchange Commission registration certificates, etc.
• Must have rendered services at least ten (10) or more on building, commercial/institution for supply of labour, tools, test equipment and technical expertise for the Preventive Maintenance of electrical equipment including Low Voltage Switchgears (LVSG), Main Distribution Panelboards and Dry type transformers at the time of bid.
• Committed to provide cost-effective services to achieve the organisations' policy and objectives.
• Can immediately mobilise and execute the project to the agreed start date.
• Must have a team of technical experts and must have professional licenses from the Professional Regulations Commissions (PRC) and safety training certificates pursuant to P.D 442 (Labor Code of the Philippines) Occupational Safety and Health Standards.

Desirable:

• Previous work with WHO or other international organizations and/or major institutions in the field of electrical installation, preventive maintenance, testing and commissioning and electrical system start-ups.

TECHNICAL SKILLS & KNOWLEDGE

• With thorough technical knowledge and expertise in performing the Preventive Maintenance of electrical equipment including Low Voltage Switchgears (LVSG), Main Distribution Panelboards and Dry type transformers.
• Must have a team of licensed professionals consist of particularly Registered Electrical Engineers, Registered Master Electricians, and skilled technicians highly trained in performing the tasks.
• Strong knowledge in electrical safety and standards, and identification of hazards particularly in high voltage equipment.

LANGUAGES

• Must be proficient in English (Read-Write-Speak / Expert or Intermediate)

COMPETENCIES

• To be able to accurately offer services and products which provide a satisfactory solution.
• Communication skills to the Client during preparation and site inspection period and during the project implementation
• Must be able to submit their company profile including the following:
  • Years of service
  • List of clients and completed projects
  • Company capacity
  • Business Permits, Bureau of Internal Revenue (BIR) registration certificates, Securities and Exchange Commission registration certificates, etc.
• Can immediately mobilise and execute the project to the agreed start date.
• Must have a team of professional consists of licensed engineers and skilled technicians for every discipline needed and highly trained in performing the tasks assigned on the project for a day-to-day coordination with WHO in-house engineering team. CV of proposed team members should be submitted together with the proposals.

ADDITIONAL INFORMATION

Duration of contract: 2 to 3 days

Place of assignment: WHO, Western Pacific Region United Nations Avenue, Manila

APPLICATIONS

Qualified and interested specialists should submit their CV {for individual contractors} or Company Profile {for institutional applications} and Expression of Interest {cover letter} to the Contract Management Officer, Ms Thu Ha Le through WPRO UNGM AT <wproungm@who.int> by Thursday, 24 March 2022 on or before 1700H (Manila GMT+8 time).

The cover letter should outline how their experience and qualifications make them suitable candidate for this position and should include their proposed daily consultancy fee and availability.

Please use Tender Notice No. 170144 as subject to all submission. Only successful candidates will be contacted.

WHO prides itself on a workforce that adheres to the highest ethical and professional standards and that is committed to put the WHO Values Charter into practice.

WHO has zero tolerance towards sexual exploitation and abuse (SEA), sexual harassment and other types of abusive conduct (i.e., discrimination, abuse of authority and harassment). All members of the WHO workforce have a role to play in promoting a safe and respectful workplace and should report to WHO any actual or suspected cases of SEA, sexual harassment and other types of abusive conduct. To ensure that individuals with a substantiated history of SEA, sexual harassment or other types of abusive conduct are not hired by the Organisation, WHO will conduct a background verification of final candidates.