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1 | Page TERMS OF REFERENCE PROVISION OF FACILITIES AND BUILDING MAINTENANCE AT ONE UN HOUSE PAP LIBERIA 14 TH DECEMBER 2020
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TERMS OF REFERENCE
PROVISION OF FACILITIES AND
BUILDING MAINTENANCE
AT ONE UN HOUSE PAP
LIBERIA
14TH DECEMBER 2020
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Contents
CHAPTER 1. BACKGROUND ................................................................................................................. 4
ARTICLE 1. COMPOUND SUMMARY ................................................................................................................. 4 ARTICLE 2. LINE OF REPORTING ...................................................................................................................... 5
CHAPTER 2. SUMMARY OF FIELD PERSONNEL TO BE PROVIDED BY CONTRACTOR .... 5
ARTICLE 3. OVERVIEW OF GENERAL MAINTENANCE AT ONE UN HOUSE LIBERIA .................................................... 5
CHAPTER 3. GENERAL MAINTENANCE OF THE BUILDING INFRASTRUCTURE AND
COMPOUND SURROUNDINGS ................................................................................................................. 6
ARTICLE 4. OVERVIEW OF GENERAL MAINTENANCE AT ONE UN HOUSE LIBERIA .................................................... 6 ARTICLE 5. SCOPE OF WORK ........................................................................................................................... 6 ARTICLE 6. PROFESSIONAL PROFILE OF CARPENTERS, PAINTERS, MASONS, WELDERS, GLAZING TECHNICIAN/KEY
DUPLICATOR 7
CHAPTER 4. POWER GENERATION (GENERATORS PRIME POWER PLANT, SOLAR
PLANT, ELECTRICAL AND AIR CONDITIONING) ............................................................................. 8
ARTICLE 7. OVERVIEW OF POWER GENERATION ................................................................................................ 8 ARTICLE 8. SCOPE OF WORK ........................................................................................................................... 8 ARTICLE 9. LOW VOLTAGE PRIME AND BACK-UP GENERATORS .............................................................................. 8
General requirements ...................................................................................................................... 8 Scope of work. Generator preventive maintenance ........................................................................ 8 Maintenance interval schedule ........................................................................................................ 9 Additional mandatory maintenance required per manufacturers recommendations .................. 11
ARTICLE 10. GENERATOR PERSONNEL .............................................................................................................. 12 ARTICLE 11. SOLAR POWER PLANT AND ELECTRICAL UTILITIES ............................................................................. 12
Equipment and Performance Standards ........................................................................................ 13 Electrical personnel ........................................................................................................................ 13
ARTICLE 12. HEAT VENTILATION AND AIR CONDITIONING (HVAC) ........................................................................ 14 Preventive Maintenance Services (PMS)Monthly: ......................................................................... 14 Preventive Maintenance Services (PMS) Quarterly: ...................................................................... 14 Air Conditioning personnel ............................................................................................................. 15
CHAPTER 5. WATER SUPPLY, WASTEWATER MANAGEMENT AND QUALITY CONTROL
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ARTICLE 13. OVERVIEW OF WATER SUPPLY MANAGEMENT ............................................................................... 15 ARTICLE 14. DAILY TASKS TO BE PERFORMED BY THE PLUMBERS: ........................................................................ 16 ARTICLE 15. PROFESSIONAL PROFILE OF PLUMBERS / WATER TECHNICIANS .......................................................... 16 ARTICLE 16. OVERVIEW OF SEWAGE MANAGEMENT ........................................................................................... 16 ARTICLE 17. OPERATION OF THE WWTP ......................................................................................................... 17 ARTICLE 18. OPERATOR PROFESSIONAL PROFILE ................................................................................................ 17 ARTICLE 19. OVERVIEW OF WATER QUALITY LABORATORY ................................................................................. 17 ARTICLE 20. OPERATION OF THE WATER QUALITY LABORATORY .......................................................................... 18 ARTICLE 21. PROFESSIONAL PROFILE OF THE WATER QUALITY LABORATORY TECHNICIAN ......................................... 18 ARTICLE 22. POINTS OF CONTROL ................................................................................................................... 18 ARTICLE 23. WATER QUALITY TESTS ................................................................................................................ 18 ARTICLE 24. INVENTORY ................................................................................................................................ 19 ARTICLE 25. WASTE MANAGEMENT ................................................................................................................ 19
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ANNEX I LIST OF POWER GENERATION EQUIPMENT ................................................................. 20
ANNEX II LIST OF ELECTRICAL EQUIPMENT ................................................................................ 21
ANNEX III LIST OF WATER SUPPLY FACILITIES ........................................................................... 22
ANNEX IV POINTS OF WATER QUALITY CONTROL...................................................................... 23
ANNEX V WATER QUALITY ANALYSIS. ............................................................................................ 24
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Chapter 1. Background
The Liberia “One UN House” initiative is a product of different analyses and debates since 2013 pertaining
to the smooth withdrawal of the UNMIL and the peaceful political transition in Liberia. Since 2013, the
UNCT has taken steps to put in place dynamic coordination mechanisms that will ensure efficiency and
complementarity among various UN Agencies through the concept of “delivering as One” in the
implementation of their mandates.
Twenty UN Agencies and International Organizations comprised of 750 staff in Liberia are co-located in One
UN shared common premises. Improving the quality of operational services so agencies can focus on their
mandates and programmes. The One UN House facilitates active collaboration, generated efficiencies across
agencies, enhanced technology integration and offered a safe environment to work together by sharing the
same complex.
The One UN House Compound, commonly known as Pan African Plaza or PAP, is located on 1st street Sinkor,
city of Monrovia, Montserrado County.
Article 1. Compound summary
It has a fenced area which includes the 8 floors building with one sub-ground level floor, parking lot and
facilities area.
A pedestrian entry point into the compound is provided on the east side and vehicles one on the west. Vehicle
exit point is installed at the same place as pedestrian entry. Access to the compound is controlled at all time
by national security guards on duty, following direct instructions from UNDSS country team.
Each floor is occupied by the particular UN Agencies as shown below:
Floor West Wing East wing
8th UNDP FAO
7th UNDP UNDP
6th UNOPS, UNAIDS, UNESCO UNHCR
5th IOM UNFPA
4th UNICEF UNICEF
3rd UN WOMEN OHCHR, JICA
2nd WFP WFP
1st WHO WHO
Mezzanine N/A UNIDO
Ground Floor RCO, UNODC, Cities Alliance UNDSS, UN Clinic
Basement Storerooms, water quality lab, water
distribution room, electrical room
Mini-mart, cafeteria, UBA,
ECOBANK, BFMU
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Back yard Generators area, wastewater treatment plant, warehouse, staff workshop,
parking lot and other facilities.
ECOWAS
Compound Gym
Article 2. Line of Reporting
The One UN House Manager through Building Facilities Management Unit (BFMU) is responsible for the
proper functioning of common services provided to the all UN Agencies sitting in PAP Compound.
The contractor must report according to the Terms of Reference explained in this document to the assigned
BFMU officer always under the overall supervision of the One UN House Manager.
The functional reporting hierarchy for this account management is as follows:
Chapter 2. Summary of field personnel to be provided by contractor
Article 3. Overview of General Maintenance at One UN House Liberia
The contractor is responsible to ensure the proper operation of all facilities described in this document. To
achieve the goal, the minimum distribution of personnel must be as follows:
Title Number of
personnel Area of work BFMU Supervisor
Carpenter 1 General Maintenance Facilities Management
Officer
Mason 1 General Maintenance Facilities Management
Officer
Painter 1 General Maintenance Facilities Management
Officer
UNDP Deputy Resident Representative for Operations
BFMU Facilities Management Officer
BFMU Power Generation Engineer
BFMU Water & Sanitation Engineer
One UN House Manager
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Power Generation
Technician 1 Power Generation
Power Generation
Engineer
Power Generation
Assistant 1 Power Generation
Power Generation
Engineer
Electrician 2 Solar Power Plant &
Electrical Utilities
Power Generation
Engineer
HVAC Technician 1 Heat, Ventilation and Air
Conditioning
Power Generation
Engineer
HVAC Assistant 1 Heat, Ventilation and Air
Conditioning
Power Generation
Engineer
Plumber 2 Water Supply and Plumbing Water & Sanitation
Engineer
Wastewater Treatment
Operator 1 Waste water Management
Water & Sanitation
Engineer
Water Quality Laboratory
Technician 1 Water Quality Laboratory
Water & Sanitation
Engineer
Total of personnel 13 - -
Chapter 3. General Maintenance of the Building Infrastructure and Compound
surroundings
Article 4. Overview of General Maintenance at One UN House Liberia
The One UN House Liberia Compound is an eight-storey building with height of 36m constructed of concrete,
concrete roof finished with dampproof membrane and glazing/glass/wooden as doors and windows with
several internal partitions made of glass, plywood and block walls including a spacious car parking spaces
and warehousing.
The main building is equipped with firefighting systems such as hose reels for water, smoke detectors, fire
alarm, fire doors PA system for announcements in case of emergencies.
General repair and maintenance of the ONE UN House is a daily activity that takes place for the smooth
running of businesses by the various Agencies for a safe mind in operations. As such carpentry, masonry,
painting and other general maintenance activities are performed on daily basis to keep the building and
surroundings in a good state for the occupants.
General repair and maintenance of the ONE UN House such as Carpentry works, painting works, masonry
etc.
With any tools issued for a work, the individual shall be responsible for keeping the tools in good condition
and submit same at the end of the day to BFMU.
Materials issued for any works shall be accounted for and cross checked by BFMU.
Article 5. Scope of work
The contractor should provide labour to carry out the following tasks:
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- General building maintenance works
- Risk assessment of the facility
- Health and safety related issues
- Office furniture repairs
- Assist with office improvement and site management
- Be responsible for execution of all carpentry works.
- Be responsible for all masonry works.
- Carry out urgent minor welding works and fabrications
- Be responsible for all painting works.
- Supervise the vendor’s work for fumigation on Saturday, once a month
- Get venues ready for UN occasions.
- Responsible for duplication of keys.
- Carry out tiling works
- Mount signage for Agencies
- Repair curtain blinds
- Carry out minor Civil/Construction works
- Supervise warehouses facilities
- Carry out painting works (prepare painting surfaces by washing walls, repairing holes, or removing
old paint, mixing, matching, and applying paints and other finishes to various surfaces)
- Provide decorative and faux finishes, as the project requires
- Interpret blueprint, drawings, and measurements to plan layouts
- Use specialized machinery for industrial welding and oversee machines that perform the same job
- Take measurements and calculate the size and amount of materials needed
- Cut, shape and smooth lumber and other materials (e.g. fiberglass) according to measurement
- Build window frames, doors staircases and from building by using raw materials or pre-constructed
items
- Lay out floorings, roofing, or drywalls ensuring they are levelled and compatible
- Carve and assemble furniture, cabinets, shelves and other items and install them where designated
- Inspect places and conduct repairs or maintenance
- Signage for parking lots
- Carry out minor repairs on glass windows and doors
- Ensure personal productivity and service quality.
- Ensure customer satisfaction through direct customer interaction.
- Ensure all work is performed to quality standards and customer expectations.
- Maintain courteous, professional contact with customers to ensure satisfaction.
- Perform any other duty as may be assigned by Supervisor.
Article 6. Professional profile of Carpenters, Painters, Masons, Welders, Glazing
technician/key duplicator
The contractor should provide the following staff to perform General Maintenance related works.
- Carpenters
- Masons
- Painters
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- Glazing Technician
- Welder for minor welding works and with knowledge in key duplication
- Technical personnel with good understanding of construction drawings
- Tillers
All technicians/workers must prove to have at least 5 years’ experience should have knowledge and be
familiar in performing the tasks below in timely and professional manners.
Chapter 4. Power Generation (Generators Prime Power Plant, Solar Plant,
Electrical and Air Conditioning)
Article 7. Overview of Power Generation
The One UN House in Liberia requires professional services and contractor cost proposals to perform
preventive maintenance services of the facility’s Prime generator systems, Solar Plant, Electrical and Air
Conditioning systems.
Article 8. Scope of work
The Contractor shall perform preventive maintenance of Power Plant (Generators), perform Electrical
installations and/or maintenance, Solar plant maintenance/repairs, Air conditioning maintenance installation
and repairs as described in this STATEMENT OF WORK. The objective of scheduled preventive
maintenance is to eliminate system malfunction, breakdown and deterioration when units are
activated/running or in standby mode.
Article 9. Low voltage prime and back-up generators
General requirements
The contractor shall provide the labour required to carry out all preventive maintenance as outlined in this SOW. One UN House staff have service manuals for Generators and Solar Plant on-site. The contractor shall confirm on-site manuals are complete and current and provide the Contracting Officer’s Representative (COR) a listing of any missing or out of date manuals.
Scope of work. Generator preventive maintenance
The contractor shall provide, supervision and labour to perform preventive, predictive maintenance, minor and major repair works. (See Annex 1 for list of generator equipment). All personnel working in the vicinity shall wear and /or use appropriate safety protection while work is performed. Any questions or injuries shall be brought to the attention of the BUILDING FACILITY MANAGEMENT UNIT. Material Safety Data Sheets (MSDS) shall be provided by the contractor for all HAZMAT materials. Copies will be provided to BFMU for approval.
The systems and components to be maintained include diesel generator prime mover, alternator, fuel, cooling, ventilation and lubrication systems, start and transfer systems, as well as control and monitoring systems. The specific generator maintenance services shall include but not limited to the following:
- Contractor must be able to demonstrate similar experience of more than 1 year of power generation
and equipment maintenance with references attached.
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- The contractor shall provide BFMU with a list of necessary parts and materials
- Oil, fluids, filters and preventive maintenance parts shall be provided at the expense of the One UN
House. Only fluids which meet or exceed manufacturer’s specifications shall be used. All fluids shall
be delivered in original sealed containers.
- The contractor shall provide emergency assistance for generator and electrical support, priced at an
hourly rate, within 24 hours of being contacted by BFMU.
- Must have perfect proven practical knowledge of generator paralleling/synchronization (references
of the same to be attached)
- Contractor must have practical knowledge and understanding of deep-sea controls i.e. 8610,7320.
- Contractor must be able to do programming of generator controls
- Must maintain a high level of knowledge and expertise in generators and generator maintenance.
- Alert UNDP where improvements can be made in the operation and maintenance of our generators
If any discrepancies are found with the generator systems that are not covered under this scope of work, the
contractor shall provide the following:
- Detailed report noting the discrepancy found.
- Bill of Materials (BOM) to include component name, quantity, part #, and price for any repair material
required and material lead time.
- Price quote for repair labour
Maintenance interval schedule
The contractor shall ensure that the entire Prime and backup generator systems for this facility are maintained
according to manufacturer’s recommendations to ensure proper operation of the prime power system and
readiness of the backup systems as tabulated below:
ITEM
NO.
DESCRIPTION
OF AREA/
ITEM
SUB
ITEM
NO.
DESCRIPTION OF SERVICES FREQUENCY
1.0 Generator 1.1
Ensure daily that the generators are
functioning normally.
Daily
1.1
Ensure all electrical appliances are
working and in good condition
As and when
required
1.3
Change worn out cables, plugs and
accessories
As and when
required
1.4
Ensure that fuel, oil and air filters are
cleaned, Oil changed every 250hrs.for
As and when
required
1.5
Ensure generator house concrete floor
must be degreased and washed every day.
Daily
1.6 Generator motors: Gauges to be checked
and monitored visually and inspected Daily
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before cleaning for oil and water leaks
including all hoses and battery terminals.
1.7
When shutting down engine allow 3
minutes of “No load” running time,
before turning “off”
Daily
1.8
Wash engine with degreaser, battery with
soap and clean water and wipe dry.
As and when
required
1.9
Power spray radiators with water to
remove dust, once every week.
Weekly
2.0 Daily check coolant level in radiator Daily
2.1
Daily check battery acid level and battery
terminal connections.
Daily
2.2
Check fan and alternate belt for correct
tension and worn out parts.
As and when
required
2.3
Maintain daily records of machine
running hours.
Daily
2.4
Prepare preventive maintenance plan
(Infrequent replacement of major parts).
As and when
required
a) Daily
- Clean Generator Area
- Record load readings – Voltage, amps, frequency, power factor.
- Record Fuel readings at 8:00 A.m. and 5:00 P.M
- Annotate date, hours and maintenance in Generator log, complete maintenance checklist and
deficiency report and brief COR
b) Every 250hrs:
- Conduct semi-annual / monthly PM service
- Engine Air Cleaner Elements – Replace.
- Engine Crankcase Breather – Clean.
- Clean generator and generator room
- Wash radiator if necessary
- Engine Oil and Filter(s) – Replace
- Annotate date and hours on all filters when replaced
- Fuel Filters and Water Separators – Replace
c) Semi-annual Schedule
1. Conduct visual inspection around generator.
- Check for evidence of leaks, damage, lose or missing hardware.
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- Inspect engine and generator wiring harness for wear and damage.
- Inspect supports and spring isolators for soundness and stability.
- Inspect system for corrosion.
- Hoses and Clamps – Inspect and replace if needed.
- Belts – Inspect and adjust/replace if needed.
- Inspect all fuel, oil, and water piping for secure mounting and leaks.
- Inspect exhaust piping and muffler insulation.
2. Batteries.
- Battery charger – Inspect operation and clean.
- Battery electrolyte level and specific gravity – Check and adjust. Add distilled water as needed.
- Perform battery load test.
- Clean battery terminals and lugs (apply grease on terminal connections).
3. Fluids
- Cooling System Coolant Level - Check and adjust.
- Coolant conditioner (DCA/SCA) / Antifreeze protection – Check and adjust to specs.
- Water pump - Check
4. Generator Area.
- Fuel;
- Inspect, check fuel level, drain water and sediment in fuel tank
- Test fuel for, water.
- Check tank vents & overflow piping for obstructions
- Air intake/exhaust – Ensure nothing obstructs airflow; louvers are free and operate properly.
- Check for evidence of overheating contacts.
Additional mandatory maintenance required per manufacturers recommendations
- Generator bearing – Inspect/Grease as recommended by manufacturer’s maintenance schedule.
- Engine Generator Batteries – Replace if 2 years old.
- Engine Valve Lash - Inspect/Adjust per manufacturer’s maintenance schedule.
- This may occur at 250hrs or up to 1500hrs depending upon manufacturer and model
number. If this has not been done, contractor needs to perform at first service.
- Many manufacturers and models require this to be done annually or according to a
schedule based on run time. This needs to occur at first service if this has not been done
and according to manufacturer’s requirements.
- Generator Set Vibration – Inspect.
- Check exhaust for excessive black or white smoke.
- Check turbocharger for vibrations or any abnormal noise during operation.
- Check generator bearing for noise and overheating.
- Check exhaust manifold, flexible exhaust, muffler, and piping for leaks and secure mountings.
- Check Crankcase breather/Blow By
- Ensure system is left in proper position for automatic start and transfer.
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- Perform any additional maintenance tasks as recommended in the manufacture’s operation and
maintenance manuals.
- Submit Service Inspection to COR
- Crankshaft Vibration Damper – Inspect
- Engine Protective Devices – Check
- Turbocharger – Inspect/Check
- Fan bearing – Inspect/Grease.
- Generator – Check for moisture, dust, oil, grease, and debris on main stator windings, exciter.
Check commutator & slip rings, rotor & stator, bearings, bearing lubrication, voltage regulator.
Measure & record resistance readings of windings with insulation tester (Megger). Clean as
needed
- Calibrate voltage-sensing relays/devices.
- Inspect Alternator
Article 10. Generator personnel
Contractor should provide two (2) personnel a technician with an assistant where the technician should
have the following certification and carry out the work as specified below:
- Should have training/certification on operation and maintenance of Volvo, Cummins and John
Deere Engines
- Must be familiar with operating and maintenance manuals and other literature relating to One
UN House generators (currently Volvo Penta, Cummins 500 kVa and John Deere 250 KVA)
to ensure all necessary steps are taken to keep them in good running order and maximize their
useful lives
- Must have the ability to perform complete installation/repair/replacement of engine and
alternator components on generators of 500 and 250 KVA.
- Must have demonstrated advance technical knowledge in solving complex problems related to
existing electrical and new installations.
- Must be able to accurately interpret prints, schematics and manufactures technical documents.
- Should have a minimum of five (5) years of progressively relevant work experience in the field
of generator maintenance, electrical engineering or power maintenance.
- Should have field experience in UNDP, peacekeeping or similar field (exploration).
- Knowledge in computer use and other software ranging from word processing and spreadsheets
- Should be able to programme deep sea controls (8610,7320) and have practical knowledge of
troubleshooting of the control systems.
Article 11. Solar Power Plant and Electrical Utilities
Power is supplied to the facility via four 500 KVA synchronized generators (paralleled and do load
sharing/shedding) which are connected to a common busbar chamber distributed to three 1250 Ampere
switch gears and one 800 Ampere moulded circuit breaker distributed to all other users through 400 ampere
breakers and a 4000 Ampere ATS LV switchboards. The prime power generators provide enough power to
operate all air conditioning units, elevators, gym facility, Ecowas building, sewage treatment plant and
lighting for 24hours 7 days a week. Most of the lighting in the building is provided by 18W 2 feet fluorescent
tube with electronic ballasts and with new greening initiative of 2feet by 2 feet led panels.
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There is a planned future of installing 2500 KVA oil type transformer. The transformer power will be
stepped down from 22 KV to 400/230V connected through an Auto Change over Switch
The building security lighting system is powered by 100KVA Off-Grid Hybrid Solar System with
battery bank of 54 KVA
The contractor shall provide, labour to perform preventive, predictive maintenance, minor and major repair
works on all electrical installations and or any other installation asked upon by BFMU.
Equipment and Performance Standards
The One UN House Liberia requires the Contractor to maintain the following systems in a safe, reliable and
efficient operating condition. Please see equipment list included in (See Annex II) for a more detailed
description.
The Contractor shall provide all necessary managerial, administrative and direct labour personnel, as well as
all transportation required to perform inspection, maintenance, and component replacement as required to
maintain the systems in accordance with this work statement.
Under this Contract the Contractor shall provide:
The services of trained and qualified technicians to inspect, adjust, and perform scheduled preventive
maintenance.
It is expected that all aspect of this SOW will be completed. Work will result in the system being in good
working condition. All deliverables shall be completed on time under this agreement Solicitation for
Preventive Maintenance of PV Systems
The Contractor shall maintain work schedules. The schedules shall take into consideration the hours that the
staff can effectively perform their services without placing a burden on the UN personnel.
The Contractor shall deliver standard services between the hours of 8:00 AM and 18:30 PM Monday through
Friday. No work shall be performed on weekends and local holidays.
Electrical personnel
Contractor should provide two (2) Certified Electricians;
- The electricians shall have Electrician certification/License and five (5) years journeyman
experience
- Must have the ability to perform complete installation/repair/replacement of electrical systems
on a facility.
- Must have demonstrated advance technical knowledge in solving complex problems related to
existing electrical and new installations.
- Must be able to accurately interpret prints, schematics and manufactures technical documents.
- Install and maintain wiring, control, and lighting systems
- Inspect electrical components, such as transformers and circuit breakers
- Identify electrical problems with a variety of testing devices
- Repair or replace wiring, equipment, or fixtures using hand tools and power tools
- Follow state and local building regulations
- Fixing or replacing parts, light fixtures, control systems, motors, and other types of electrical
equipment.
- Electricians must be able to use ammeters, voltmeters, thermal scanners, and cable testers to
find problems and ensure that components are working properly.
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- The electricians must be able to maintain and repair large motors, equipment, and control
systems in the building and equipment in the compound.
Article 12. Heat ventilation and air conditioning (HVAC)
The building/offices are ventilated with approximately 350 spilt air conditioning units installed in various
offices. The air conditioning units range from 9000 btu to 60,000 btu of various makes i.e Samsung, Gibson,
West Point, LG, Universal air, Heir, Hisense and many other more
The contractor shall ensure that the entire air conditioning systems for this facility are maintained according
to manufacturer’s recommendations to ensure proper operation as shown below;
Preventive Maintenance Services (PMS)Monthly:
The monthly services include:
- Cleaning of air filters, indoor unit grills & filters through air blower.
- Cleaning of the indoor unit body by wiping out the dust etc. with wet cloth.
Preventive Maintenance Services (PMS) Quarterly:
Every machine shall be serviced at least once every quarter. A record of such services duly acknowledged by
the person using the machine or in his absence, in charge of the location of the AC shall be maintained.
Quarterly PMS shall include at least the following services:
- Replacement of filter if found damaged/unusable.
- Checking selector switch, thermostat, relays, remote control etc.
- Checking motor bushings
- Checking ground connections.
- Cleaning of blower and condenser fan.
- Cleaning the evaporator & condenser coils.
- Checking and tightening of nuts & bolts.
- Oiling the motors.
- Checking of the backup electrical power outlet/ MCB.
- Checking of the drive motors and fans.
- Over hauling of the AC, with chemical washing process.
- Checking cooling efficiency.
- Checking Firmness of the Supporting arrangement for the compressor, blower motor, air conditioners
casing and fixing of the air conditioners etc.
- Replacement of any component of air conditioners (Outdoor and indoor units, inlet and outlet
Pipelines, electrical connections etc.) found defective after the above checks and tests.
- Charging of Refrigerant Gas during the period of Contract if need arises. A maintenance schedule
mutually agreed upon will be prepared before commencement of the AMC. Any delay beyond the
agreed schedule will attract penalty of 1% of Rate Contract value per day of delay or part there of
subject to maximum deduction of 10%of the Rate Contract value.
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- Annual Maintenance Services: The scope of work shall include all checks and tests as detailed under
routine maintenance services. In addition, annual maintenance services shall also include.
- Cleaning the condenser and evaporator coils with suitable detergent/chemical solution and flushing
with high-pressure jet of water.
- Greasing of blower motors and all moving parts.
- Provide excellent customer service.
- Layout, design, and install low-voltage wiring.
Air Conditioning personnel
Contractor shall provide two (2) personnel; a Certified Ac technician with an assistant;
- The ac technicians shall have ac certification/License and five (5) years journeyman experience
- Must have the ability to perform installation/repair/replacement of ac systems on a facility.
- Must have demonstrated advance technical knowledge in solving complex problems related to
existing air conditioning and new installations.
- Must be able to accurately interpret prints, schematics and manufactures technical documents.
- Install and maintain wiring
- Identify electrical problems with a variety of testing devices
- Repair or replace wiring, equipment, or fixtures using hand tools and power tools
- Follow state and local building regulations
- Fixing or replacing parts, motors, and other types of electrical equipment related to air conditioning
- Ac technicians must be able to use ammeters, voltmeters, thermal scanners, and cable testers to find
problems and ensure that components are working properly.
- Should have certification in handling of freon gas i.e. R.22 and R 410-a
Chapter 5. Water supply, Wastewater management and Quality Control
Article 13. Overview of Water Supply Management
A complete water supply infrastructure is available and functional at One UN House Liberia Compound
including all stages from catchment to storage, primary treatment, distribution and final points of
consumption.
The main source for catchment is the borehole located in the nearby compound, currently occupied by the
Economic Community of West African States (ECOWAS) where a submersible pump is installed with the
purpose of pumping groundwater to the main storage tank, located in the basement of the One UN House
building.
A secondary borehole is located in the backyard of the compound but currently is mainly used to supply water
to the put in place carwash area.
Monitoring of performance of boreholes is critical to avoid overuse of the resources that could lead into the
destruction of the aquifer, and consequently the main source of water supply at One UN House Liberia. In
case of failure of the groundwater sources and/or the equipment installed, an existing connection to the local
water distribution network managed by Liberian Water and Sewer Corporation (LWSC) is available and
directly connected to the compound, but at the moment of preparation of this document it is not qualitative
nor quantitative reliable.
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The main storage tank has a capacity of 60 m3, the equivalent consumption for a minimum of two days and a
half, is connected with the transition tank located in the penthouse floor having a capacity of 15 m3. A float
switch is installed in the transition tank, connected to the pumping equipment in the basement right after the
main storage tank, which detect low level and automatically pump water to the transition tank. Water is
distributed to all floors by gravity.
The main line after the storage tank is diverted to 2 polytanks with a capacity of 2,000 l each, which constitute
the water supply system for cafeteria / restaurant facilities.
As the water supplied through the described system is not meant for direct human consumption but must
comply the minimum quality requirements established by WHO, raw water is filtrated and chlorinated before
being distributed to the consumption points.
In case of unavailability of the transition tank due to an emergency situation or maintenance works, a fully
functional back-up system is installed in the roof top of the building, with a capacity of 17,000 l, divided in
three bladders, 5,000 l capacity each, and two polytanks, capacity 1,000 l each.
For further clarification on the water supply system, see Annex III.
Article 14. Daily tasks to be performed by the plumbers:
Under the direct supervision of the BFMU Water & Sanitation Engineer or designated person, the water
technicians / plumbers are responsible to perform the following tasks:
- On daily basis, plumbers must inspect all water supply facilities to ensure the proper distribution of
it, avoiding wastage (leakages in pipes and connections), low quality and shortage of water.
- Staff must monitor the weekly consumption of water through water meters installed to that effect.
Any abnormal reading must be immediately reported to BFMU Water & Sanitation Engineer.
- Plumbers / water technicians must follow the established maintenance plan for all water related
facilities.
- Plumbers / water technicians must keep records of every item or material used to perform their tasks
as well as the description of the job itself following the existing form.
- Perform other related duties as required by BFMU Water & Sanitation Engineer or designated person.
Article 15. Professional profile of plumbers / water technicians
The contractor must provide two plumbers or water technicians that comply the following requirements:
- The water technicians must have at least 3 years-experience on the installation, operation and
maintenance of Water Supply System.
- The water technicians must be able to read and understand electrical equipment instructions manual,
especially water pumps.
Article 16. Overview of sewage management
The sewage management system put in place at One UN House Liberia includes all stages from collection
(piped system), storage (250 m3 capacity holding tank), treatment (two wastewater treatment plant units of a
maximum treatment capacity of 30 m3/day each) and safe disposal of product water to local sewage network.
The installed waste water treatment technology is designed to collect and treat the domestic sewage generated
by UN missions in global sites. In the case of One UN House Liberia Compound, volume treated per year is
around 7,800 m3
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The distribution manhole is the main sewage collection pipe discharging point. Sewage is pumped to holding
tank. It is directly connected to the local sewerage for disposal of untreated wastewater in the very unlikely
situation of shutting/breaking down of the plant.
The holding tank is designed to hold equivalent wastewater generated at One UN House Compound in 10
days. In addition, acts as homogenization tank to reduce fluctuations and start aerobic process. Sewage is
pumped to the first stage of the wastewater treatment plant: septic system modules.
The WWTP is structured in three modules:
- Septic system
- Lift station
- Wastewater treatment
Product water is discharged through 5” PVC pipe directly to the local sewage network. With the proper
infrastructure, the water can be stored and safely reused for certain purposes.
Article 17. Operation of the WWTP
The contractor must provide one Wastewater Treatment Plant Operator on daily basis (from Monday to
Friday) by the assigned Plant Operator, who is responsible of the following tasks:
- To operate and maintain the Wastewater Treatment Plant (WWTP) according to the requirements
established by BFMU and Instruction Manual provided by the manufacturer.
- To create and keep updated records of all parameters established in the put in place maintenance plan.
- To visually monitor the quality of effluent to be discharged.
- In the given situation of abnormal appearance of the effluent, the operator must immediately report
to BFMU Water & Sanitation Engineer, or designated person in her/his absence.
- To coordinate, assist and support the Water Laboratory Technician in the collection of samples for
quality testing.
- To train new/current staff on the operation and maintenance of the WWTP.
- To support every required work related with plumbing/water supply/sewage specifically.
- To perform any other duty as may be assigned by Water & Sanitation Engineer or designated person
always under the supervision of the first one.
Article 18. Operator professional profile
- The operator must be familiar with the modular system and Membrane Bio-Reactor (MBR)
technology
- The operator must have at least 3 years-experience on the operation of Wastewater Treatment Plants
and Sludge Management.
- The operator must be able to read and understand electrical equipment Instruction Manual as well as
perform small repairs on her/his field.
Article 19. Overview of Water Quality Laboratory
As part of the Water Quality Plan put in place, the Water Quality Laboratory plays one of the main roles by
certifying the expected quality and providing guidance on the way forward to improve it, if necessary.
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The laboratory is designed to carry out basic physical, chemical and bacteriological analysis for raw and
treated water as well as for WWTP influent and effluent.
In case of discrepancies in the results, BFMU will consider the possibility to request for an outside laboratory
(National Public Health Institute of Liberia/ Ministry of Health) to carry out water quality tests to
countercheck the accuracy of the laboratory.
Article 20. Operation of the Water Quality Laboratory
The Water Quality Laboratory Technician will be reporting to BFMU Water & Sanitation Engineer or
designed person and is responsible to perform the following tasks:
- To follow the approved Water Quality Testing Plan based on the applicable WHO Guidelines values.
- To provide advice on the measures to be taken in order to guarantee the quality standards established
by the World Health Organization (WHO) depending on the nature of the sample tested and its use.
- To collect and prepare samples from all sources of water to be tested.
- To update inventory of all Laboratory items on monthly basis indicating quantity in stock, used and
expired.
- To prepare list of hazardous expired chemicals and reagents to be safely disposed.
- To conduct accuracy checks of all equipment and calibrate them if necessary.
- Delivery of monthly reports of all tasks performed.
- To perform other related tasks as assigned by the BFMU Water & Sanitation Engineer or designated
person, in its case.
Article 21. Professional profile of the Water Quality Laboratory Technician
The Water Quality Laboratory Technician must comply the following:
- Diploma in Chemistry and/or Microbiology
- More than 5 years-experience on a similar position and responsibilities is a must.
- Must be familiar with water analyses techniques, water quality parameters according to WHO
guidelines and basic knowledge of water treatment procedures.
Article 22. Points of control
With the purpose of having an overall perspective of the quality of all water/wastewater sources present at
One UN House Liberia, the following points of control must be tested according to the approved “Water
Quality Testing Plan” (See Annex III).
Article 23. Water quality tests
The water quality parameters to be tested depends on the nature of the source and intended use as described
in the previous section of this document:
- Drinking water: water complete test;
- Raw water: water reduced test
- Supply of water: water complete test
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- Waste water: wastewater test
- Waste water (oil separator): oil & grease
See Annex IV for further clarification.
Article 24. Inventory
Inventory of all Water Quality Laboratory material and equipment is updated at the end of every month with
the purpose of acting proactively on the replacement of them.
Article 25. Waste management
Expired or damaged lab items are most of the times considered as hazardous material which must be managed
by authorized contractor.
In the case of the One UN House Water Quality lab, the generated waste is disposed through the UN Clinic
once a month.
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Annex I List of power generation equipment
Equipment Manufacturer Make Model Engine
hours
GEN
SIZE(KVA) Location
GEN-1 VOLVO PENTA TAD1641GE
500 GENERATOR
PAD
GEN-2 VOLVO PENTA TAD1641GE
500 GENERATOR
PAD
GEN-3 VOLVO PENTA TAD1641GE
500 GENERATOR
PAD
GEN-4 VOLVO PENTA TAD1641GE
500 GENERATOR
PAD
GEN-5 BRUNO Cummins QSX15-G8
500 GENERATOR
PAD
GEN-6 BRUNO Cummins QSX15-G8
500 GENERATOR
PAD
GEN-7 BRUNO JOHN
DEERE
6068HF485
250 GENERATOR
PAD
GEN-8 BRUNO JOHN
DEERE
6068HF485
250 ECOWAS
COMPOUND
GEN-9 BRUNO JOHN
DEERE
6068HF485
250 ECOWAS
COMPOUND
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Annex II List of electrical equipment
Equipment Manufacturer Make Model Engine
hours
Specifications Location
ATS FG WILSON FG
WILSON
ATI125 N/A Electrical
room
BUS BAR
PANEL
N/A Electrical
room
PROGRAMA
BLE TIMERS
CHINT CHINT N/A Electrical
room
SOLAR
PANEL
N/A Solar
room
SOLAR
INVERTER
SMA N/A Solar
room
BATTERY
INVERTER
SMA N/A Solar
room
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Annex III List of water supply facilities
From To Use Capacity
Borehole ECOWAS Main storage tank Distribution 60,000 l
Borehole ECOWAS Polytanks gym Consumption 9,000 l
Borehole ECOWAS Fire safety storage Supply to fire truck 20,000 l
Borehole PAP Polytanks at carwash area Washing UN vehicles 4,000 l
Main storage tank Transition tank Consumption 15,000 l
Main storage tank Polytank cafeteria Consumption 4,000 l
Main storage tank Water supply back-up
system
Consumption during
emergencies or maintenance
of the main system
17,000 l
Transition tank Water consumption points Consumption N/A
Transition tank Fire hoses Supply to fire hoses in every
floor N/A
Transition tank Polytanks 8th floor Consumption at 8th floor 4,000 l
Polytanks 8th floor Points of consumption in
8th floor
Consumption N/A
Water supply back-up
system
All points of consumption
in the building
Consumption N/A
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Annex IV Points of water quality control
Type Description Source Use
Drinking water Bottled water External supplier For human consumption
Raw water Borehole ECOWAS Ground water For treatment and distribution to
One UN House
Raw water Borehole PAP Ground water Supply of carwash area
Supply water Pump room
basement
Main reservoir Supply of water to One UN
House
Supply water Pump room roof Distribution tank Supply of water to One UN
House
Waste water WWTP #1 Wastewater generated at One
UN House Compound
For safe disposal or reuse
Waste water WWTP #2 Wastewater generated at One
UN House Compound
For safe disposal or reuse
Waste water Oil separator Wastewater from cleaning of
generators area
For disposal
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Annex V Water quality analysis.
Parameters Methods Type of analysis
Physical & Chemical characteristics
Alkalinity Titration Water complete test
Aluminium Spectrophotometry Water complete test
Chloride Titration Water complete test
Colour Visual
Comparison Water complete test
Copper Spectrophotometry Water complete test
Water reduced test
Chromium VI Spectrophotometry Water complete test
Electrical Conductivity Meter
Measurement
Water complete test
Water reduced test
Fluoride Spectrophotometry Water complete test
Hardness Titration Water complete test
Water reduced test
Iron Spectrophotometry Water complete test
Water reduced test
Manganese Spectrophotometry Water complete test
Water reduced test
Nitrate Spectrophotometry Water complete test
Water reduced test
pH Meter
Measurement
Water complete test
Water reduced test
Waste water
Residual Chlorine Spectrophotometry Water complete test
Water reduced test
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Sulphate Spectrophotometry Water complete test
Water reduced test
Total Dissolved Solids Meter
Measurement
Water complete test
Water reduced test
Turbidity Meter
Measurement
Water complete test
Water reduced test
Temperature Meter
Measurement
Water complete test
Water reduced test
Waste water
Bacterial Characteristics
Total Coliform Membrane Filter Water complete test
E-Coli Membrane Filter Water complete test
Organic Characteristics
Biochemical Oxygen Demand (BOD) Colorimetric Waste water
Chemical Oxygen Demand (COD) Colorimetric Waste water
Oil & Grease Gravimetric Waste water (oil separator)
Presence of solids
Total suspended Solids (TSS) Meter
measurement Waste water
