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Chiller Cooling System Maintenance

Maryland, United States
Government : Military
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Chiller Maintenance
23 February 2018

Part C.1 General Information

C.1.1. Background: The primary mission of United States Army Garrison, Adelphi Laboratory Center (ALC) is to provide valuable support services and infrastructure to enable scientific research, development, and well-being of the workforce. ALC serves the Soldier and collaborates with Army science and research by providing excellent lab facilities and support services.

C.1.2. Scope: This is a non-personal services contract to provide routine Inspection, Testing and Maintenance services, also known as Preventative Maintenance (PM) for the Cooling Systems and associated equipment described in Technical Exhibit 1. The Contractor shall provide all labor, equipment, tools, transportation, supervision and all other items necessary to perform recurring preventive maintenance services for the specific list of equipment issued with this PWS. The Contractor shall provide maintenance and repair services to ensure all systems are functioning properly and efficiently. The Contractor shall ensure that all components are maintained in a safe and proper operating condition according to manufacturer's specifications. The primary goal is to avoid or mitigate the consequences of equipment and system failure. The Contractor shall also provide Corrective Maintenance (CM). CM will also cover the equipment listed in Technical Exhibit 1. The Government will not exercise any supervision or control over the contract service providers performing the services herein. Such contract service providers shall be accountable solely to the Contractor who, in turn, is responsible to the Government.

C.1.3. Ordering Period: In conjunction with the requirements of the basic contract, the Contractor shall provide the requirements described in this PWS for one (1) base year and two (2) option years. The Government may elect to exercise one (1) or more options and there are no guarantees that options will be exercised. Additionally, this contract may be incrementally funded per DFARS Clause 252.232-7007 "Limitation of Government's Obligation". The Contractor shall provide a Firm Fixed Price (FFP) proposal for all Preventative Maintenance (PM) work required by this PWS. The Contractor shall structure their proposal for PM based on the Equipment list in Technical Exhibit 1.

C.1.4. Preventative Maintenance (PM) consists of all systems listed in Technical Exhibit 1 and the preventive maintenance and service of the systems. PM does not include equipment repair or life cycle replacement; however minor services including broken belts, jammed dampers, and other failures caused by maintenance deficiencies are considered preventative maintenance (see Section C.3.1 of this PWS). Based on the equipment list in Technical Exhibit 1, this Contract Line Item Number (CLIN) will be Firm Fixed Priced (FFP) and billed on a monthly basis from the appropriate Contract Line Item Number (CLIN). Monthly payments will be made after invoicing and documentation are verified. The Contractor shall confirm that all required inspection and testing actions are completed for the invoice's period of performance prior to submitting an invoice.

C.1.5. Corrective Maintenance (CM) consists of repair or replacement of system elements with impending failure and/or non-functional components. The Contractor shall identify, isolate, and rectify a fault so that the failed equipment or system can be restored to an operational condition within the tolerance or limits established for in-service operation. CM does not include life cycle replacement and primarily consists of service, repair, and replacement measures to reinstate the intended function and performance of the system. This task will be performed on either a Time and Material (T&M) and/or FFP process depending on the classification (see Section C.3.2 of this PWS). Corrective Maintenance shall only be billed, on T&M and/or FFP, after the repair is complete and the customer has approved the completed Service Order (SO). CM shall cover all systems and equipment listed in Technical Exhibit 1.

C.1.6. Place of Performance: The work to be performed under this contract will be performed at the Central Utility Plant (Bldg. 106) and "satellite" building cooling equipment in various other buildings throughout the U.S. Army Garrison ALC, 2800 Powder Mill Road; Adelphi, Maryland 20783.

C.1.7. Cooling demands at U.S. Army Garrison ALC are satisfied via two means: a Central Cooling Plant in B106 and "satellite" building cooling equipment in various other buildings. The Central Cooling Plant serves Buildings 101, 103, 112, 202, 203, 204, 205, and 207, while the satellite building cooling equipment listed in Technical Exhibit 1 serve buildings 108, 403, 404, 406, 504, and 601.

C.1.7.1 Central Cooling Plant Description: The Central Cooling Plant includes five (5) cooling towers, five liquid cooled chillers totaling 6,000 tons of refrigeration capacity, condenser water pumps and chilled water pumps. The chillers are piped in a primary-secondary arrangement. All chillers are served by dedicated primary chilled water pumps. There are five (5) primary chilled water pumps which are connected in close proximity to the chilled water return input of the chiller it serves. The chillers are piped in parallel and intended to be staged on, as required by the building load. Chillers 3A and 3B are piped in a series-counterflow arrangement. Chillers 4A and 4B are also piped in a series-counterflow arrangement. Chillers 2, 6 and 7 are piped in parallel with 3A & 3B and 4A & 4B. Chillers 4A and 4B have a heat exchanger which allows for free cooling. All chillers in Building 106 share a common chilled water supply header which utilizes three (3) secondary chilled water pumps. The secondary pumps with variable-speed drives are required to distribute chilled water through underground piping to the connected campus buildings. The secondary chilled water loop has four (4) taps inside the plant which supply chilled water to the various buildings on site. Condenser water is provided by five counter-flow, induced draft evaporative cooling towers. Each cooling tower is independently connected to its respective chiller(s) and condenser water pump. The condenser water is circulated to each of the aforementioned chillers and one free cooling heat exchanger by five dedicated condenser water pumps. Each chiller is served by its own two-cell cooling tower with variable speed fans that maintain the condenser water temperature between 70°F and 85°F year-round. Also, Chillers 4A& 4B as well as the free cooling Heat Exchanger were installed via an Energy Saving Performance Contract and are maintained by others. It is important to note that chillers 6 and 7 and chiller towers 6 and 7 are nonoperational and scheduled for replacement in FY19 and FY20. The maximum cooling demand observed at the plant is approximately 2800 tons and minimum is 400 tons.

C.1.7.2 Satellite Building Cooling Equipment: The Satellite Building Cooling Plants as listed in Technical Exhibit 1 are liquid cooled chillers of various sizing with dedicated condenser and chilled water pumps. The equipment schedules accompanying this PWS are capturing the specified equipment that are currently installed and that will be installed, which are to be maintained as part of this contract.

C.1.8. Minimizing Disruption: The Contractor shall be responsible for providing services as needed to reduce disruption to mission activities. Any action or outage that will change the primary function or performance of any building system shall be performed during a time that will least likely disrupt mission activities. This will require major activities on core systems to be performed during a later shift, on weekends, holidays or during outage periods. In those cases where some interference may essentially be unavoidable, the Contractor shall make every effort to minimize the impact of interference, inconvenience, equipment downtime, interrupted service and customer discomfort. The extent of such disruption shall be agreed with the Contracting Officer's Representative (COR) in advance.

C.1.9. Work Execution: Included in this function are full ranges of management duties including, but not limited to, planning, organizing, scheduling, directing, controlling, cost accounting, report preparation, reporting, establishing, and maintaining records, and quality control. Contractor shall accomplish the work in a cost effective manner, ensuring qualified craftsmen with the required expertise and the proper equipment are available on site when needed, while limiting the number of craftsmen and the equipment to the minimum essential for efficiently accomplishing the repairs. The scope of work, methods of accomplishment and materials used will be closely scrutinized and are subject to Government approval.

C.1.9.1 The Contractor shall implement all necessary work control procedures to ensure timely accomplishment of work requirements, to include or permit the tracking of work progress.
C.1.9.2 The Contractor shall plan and schedule work to assure material, labor, and equipment are available to complete those requirements within the specified time limits and in conformance with the standards of quality and timeliness herein.
C.1.9.3 The Contractor shall manage the total work effort associated with the services required herein to assure fully adequate and timely completion of these services.

C.1.10. Equipment Condition: The Government makes no representation or guarantee as to the condition of equipment on the start date of the contract, and no adjustments will be made in the contract price relative to equipment condition after the award of the contract.

C.1.11. Hours of Operation: The services and repairs to be performed under this contract shall be performed during normal Government Operating Days, Monday through Friday except for Federal holidays, between the hours of 0700 to 1630 local time. Work outside of normal Government operating hours shall be permissible if approved by the Contracting Officer's Representative (COR). If services are scheduled by the Contractor to be performed on a regular federal holiday (see below), or one designated by Presidential proclamation, rescheduling shall be at discretion of COR.

New Year's Day
Labor Day
Martin Luther King Jr.'s Birthday
Columbus Day
President's Day

Veteran's Day
Memorial Day
Thanksgiving Day
Independence Day
Christmas Day
C.1.12. Personnel Requirements: The Contractor shall provide adequate number of persons with the necessary technical, professional and management skills and expertise to ensure work is performed with best industry practices and contract requirements. The Contractor shall ensure that employees' skills, qualifications, certifications and experience are commensurate with the employees' site specific work assignment and consistent with industry standards and US Army requirements.

C.1.13. Licensing/Certification/Training Documentation: Licenses required of the Contractor to conduct business (for example, local or state business licenses) shall be obtained prior to performing work under this contract. Personnel licensing and certification shall be complete before that individual performs any work under this Contract. All licenses and certificates shall be current, and shall be kept current throughout the contract period of performance. The Contractor shall have available for the Government's review, all licensing/certification/training documentation for all Contractor personnel occupying positions that require special training/certification.

C.1.14. Maintaining and Operating Safe and Reliable Facilities: The primary focus of this contract is to improve the quality of care and the performance of the systems and equipment described in this PWS. It is the Contractor's responsibility to assure the reliability and availability of critical systems via effective maintenance. It is the Contractor's responsibility to ensure that systems do not fail due to Contractor's negligence. It is the Contractor's responsibility to protect personnel and property from the risk of harm, injury and damage. Any equipment deficiencies noted by the Contractor during operational checks, preventive maintenance inspections, trouble call/service work, or other times shall be reported and thoroughly documented in electronic format. All reports shall be typewritten, legible and clear. Handwritten reports will not be accepted.

C.1.15. Security Requirements: Contractor personnel performing under this scope of work on the ALC premises must be citizens of the United States, either native-born or naturalized. No foreign nationals shall be permitted on ALC. Cases of dual or multiple citizenships will be reviewed by security personnel. Contractor personnel performing work under this contract must be able to obtain a National Agency Check with Inquiries (NACI) clearance and prior to commencement of work under this contract, and must be able to maintain a NACI clearance during the performance of the contract. The Contractor must pass the National Crime Information Center (NCIC) Interstate Identification Index (III) background investigation to gain access on the installation. All NACI and NCIC III investigations will be performed at the Government's expense.

C.1.16. Access and General Protection/Security Policy and Procedures: Contractor and all associated sub-contractors employees shall comply with applicable installation, facility and area commander installation/facility access and local security policies and procedures (provided by government representative). The Contractor shall also provide all information required for background checks to meet installation access requirements to be accomplished by installation Provost Marshal Office, Director of Emergency Services or Security Office. Contractor workforce must comply with all personal identity verification requirements as directed by DOD, HQDA and/or local policy. In addition to the changes otherwise authorized by the changes clause of this contract, should the Force Protection Condition (FPCON) at any individual facility or installation change, the Government may require changes in Contractor security matters or processes.

C.1.17. Quality Control: The Contractor shall develop and maintain an effective Quality Control Program to ensure services are performed in accordance with this PWS. The Contractor shall develop and implement procedures to identify, prevent, and ensure non-recurrence of defective services. The Contractor's quality control program is the means by which the Contractor assures all work complies with the requirement of the contract.

C.1.18. Safety Program: The Contractor shall take all precautions in the performance of work under this contract to protect the safety and health of the Contractor's employees, to protect the safety and health of all persons in or near the jobsite, and to prevent damage to property, materials, supplies and equipment. The Contractor shall establish an accident prevention and safety program encompassing each line item of this contract, which shall provide safety, health protection, and personnel medical record maintenance as required. The Contractor shall develop and submit a site-specific "Accident Prevention Plan", describing procedures for preventing accidents and for preserving the life and health of Contractor and Government personnel. See section "C.4.10 Accident Prevention Plan" of this PWS for more details regarding the "Accident Prevention Plan".

C.1.19. Hazardous Materials/ Waste Program: The Contractor shall develop and maintain an effective Hazardous Material/Waste Program to ensure all work performed under this contract is in compliance with all applicable State, Federal, and local laws and regulations. The goal of the program is to ensure the safe handling/disposal of hazardous materials/waste during the performance of this contract. See section "C.4.18 Hazardous Waste Management Plan" of this PWS for more details regarding the reporting requirements for the "Hazardous Materials/Waste Program". The Contractor shall immediately notify the COR of any nonconformance and/or noncompliance with applicable Federal, State or Local environmental laws, Army and installation environmental regulations or policies.

C.1.20. Documentation: Records, documents, inspections, reports, correspondence, calibrations, calculations, and all other documents and writings, together with any charts, graphs, tables, illustrations, photographs, images, and other illustrative, explanatory, historical, or analytical material, related thereto or independent thereof, regardless of the medium (or media) by which they were produced, preserved, stored, or created in connection with or for purpose(s) of work performed under this contract, are property of the Government and shall be delivered to the Government Representative promptly, as stipulated within this contract in electronic format. The Contractor shall document all work performed under this contract in accordance with the deliverables contained in section C.4 of this PWS. The Contractor, at no expense to the Government, shall correct and re-submit improperly prepared deliverables rejected by the COR.

C.1.21. Submittal Ownership: The Government shall have the ownership of all surveys, plans, and submittals provided to the Contracting Officer (KO) under this contract. If after the Contractor has produced any plans, submittal(s), and/or site survey and the Government chooses to pursue a project by means other than this contract or Contractor, the Government will do so as owner of all surveys, submittals, and plans submitted to the Contracting Officer. The Contractor shall maintain records and files for all reports, completed forms, and other data required (including all contract-related correspondence). The Contractor shall make accessible to Government all records and files applicable to this Contract. The Government retains ownership of all databases, information, and other materials received or developed by the Contractor in support of this Contract at all times. All records and files compiled during the life of the Contract are Government owned and shall be turned over to the Government within thirty (30) days prior to the end of the Contract's period of performance.

C.1.22. Systems/Equipment Failure: Systems or equipment which fail to a condition where they are not operational or not safely operational, and which have open PM work orders which are beyond the targeted completion date, will be evaluated by the COR to determine if the failure to perform maintenance was a factor in the failure of the equipment. Maintenance failures will be determined by investigating the condition of the failed assets and reviewing the maintenance history performed on the assets. The Government reserves the right to implement maintenance failure deductions based upon the findings of the Government's investigation.

C.1.23. Differing Site Conditions: If during performance of Repair Work, the Contractor encounters unforeseen conditions that impact the work and could not be evaluated during the initial estimating procedures and proposal process, the Contractor shall submit to the COR a proposed changes to the Government and not proceed with the proposed work without first obtaining authorization from the COR and Contracting Officer. The proposed change order shall contain adequate information for the Government to fully assess the unforeseen condition. After review of the proposed change order and negotiations, the Government will both modify the contract and direct the Contractor to proceed with the work or exercise other options available to the Government. The Contractor shall not be entitled to any additional compensation for preparing a proposed change order. If the Contractor is directed to stop work, the Contractor shall clean and secure the work site.

C.1.24. Replacement, Modernization, and Renovation: The Government may replace, renovate, or install new equipment at Government expense and by means not associated with this contract. Replaced, improved, updated, modernized, or renovated systems and equipment interfaced to the system may be added to the Contractor's scope of maintenance and service effort. A modification will be issued or can be requested by the Contractor if deemed necessary to compensate for any changes in scope. The Contractor shall determine compatibility and interfacing of new equipment associated with existing systems with consideration given to existing equipment in existing buildings. Any issues shall be addressed by the Contractor during the integration process.

C.1.25. Additional Equipment: Per section 1.7.1, it is important to note that chillers 6 and 7 and chiller towers 6 and 7 are nonoperational and scheduled for replacement in FY19 and FY20 respectively. The Government reserves the option to add additional chiller equipment to the contract at negotiated rates when the equipment becomes the responsibility of the Government. The Government also reserves the option to delete equipment from this contract when the Government no longer requires the equipment.

Part C.2 Personnel Requirements

C.2.1. Staffing: The Contractor shall continuously maintain an adequate qualified staff with suitable technical, trade, management, and professional expertise to assure work is scheduled, performed and completed in accordance with all specifications. Personnel operating and performing preventive maintenance on the building systems, or working around these systems, shall be fully trained, experienced and certified/licensed where required by federal, state or local law for performing the required tasks to ensure that all systems meet required health, safety and environmental standards. Throughout this contract, the term "Contractor" shall also include any sub-contractors performing under this contract.

C.2.1.1 The Contractor shall maintain an adequate work force to complete work in accordance with the time and quality standards specified. The Contractor shall be responsible for any workforce augmentation needed to accomplish Government requirements. For all proposed personnel changes during contract performance, the Contractor shall submit all necessary documentation required to substantiate any new personnel performing under the contract meet the certification/licensing requirements as set forth in this PWS.

C.2.2. Certification/Training: Contractor's service technicians and operators shall be certified for work on each particular system. Contractor shall be responsible to maintain these certifications for all personnel performing direct, physical work on these systems at all times through the life of the contract. At no time shall apprentice-level personnel be allowed to execute tasks without an appropriately certified technician or qualified supervisor directly present and observing the work.

C.2.2.1 The Contractor shall submit current and active Journeyman licenses or state equivalent licenses for each Engineering Technician performing under this contract.

C.2.2.2 The Contractor shall have Occupational Safety and Health Administration (OSHA) mandated Confined Space Entry Training in order to execute this project. The Contractor shall provide the certificate of training for employees that enter the confined space upon contract award.

C.2.3. Work Experience: Supervisory and technical personnel shall have related experience in the maintenance and service of similar projects. Supervisory personnel shall be experienced in the administration, scheduling and coordination of a work force for the maintenance and service of a comparable project of similar complexity.

C.2.4. Conduct and Behavior: The Contractor's personnel shall be neat and tidy in their attire while providing services under this contract and be dressed in a manner appropriate to the nature of the programs and services being provided. The Contractor's personnel shall conduct themselves in a manner that is consistent with the customs of the Government organization and the standards of courtesy, conduct, and behavior expected of the client's staff of equivalent capacity. The Contractor shall ensure the presentation, manner, and image conveyed by persons employed under this contract are consistent with the good name, reputation, and image of the Government. All staff shall be well presented, courteous, informative and responsible in their manner and dealings with Government's personnel, visitors to the facilities, members of the community, and other Contractors.

C.2.4.1 The Contractor shall dismiss any Contractor employee, or prospective employee, who is identified and/or established as a potential or actual threat to the health, safety, security, general well-being, or operational mission of the facility and its population.

C.2.4.2 The Contractor shall dismiss any Contractor employee found to be under the influence of alcohol, drugs, or any other incapacitating agent, inappropriate behavior, poor performance, misconduct, or for endangering life or property. The removal of such person(s) shall not relieve the Contractor of the requirements of this contract.

Part C.3 Specific Tasks

C.3.1. Preventative Maintenance (PM): The Contractor shall complete all minor repair requirements to fix maintenance deficiencies identified during the performance of preventive maintenance inspections as part of the preventive maintenance program. Preventive maintenance consists of: inspection/testing, cleaning, lubrication, adjustment, calibration, and minor parts and component replacement (including filters, belts, hoses, fluids, oil, gaskets, o-rings and grease) as required to minimize malfunction, breakdown, and deterioration of equipment; and the identification of and/or performance of any repairs required to bring the equipment up to the manufacturer's operating standards.

C.3.1.1 All preventive maintenance, and preventive maintenance repairs shall be included in the firm fixed-price Contract, including all labor, materials, equipment, and supplies (including rags, lubricants, solvents, nuts and bolts), and appurtenances (including belts, bearings, filters, batteries, lamps, ballasts and testing equipment). Repairs or item replacements recommended by manufacturers in the equipment O&M Manuals, O&M Technical Bulletins, and advisories that are specifically identified in the Contractor Master PM Schedule shall be part of the preventive maintenance requirement. Preventative maintenance work prescribed by the Original Equipment Manufacturer (OEM), to include parts and services, mandated inspections, calibrations and annual recertification, as provided by OEM qualified sub-contractors shall be part of the FFP. This also includes any costs for required follow-up minor maintenance repair services resulting from the preventative maintenance procedures and inspections.

C.3.1.2 PM shall consist of physical inspection of the entire system including insulation, exhaust area, and tank interior, lever test of safety valves, resistance testing of the motors, inspecting drain valves and floor drains, testing water samples, electrical connections and controls, oil pressure and all gauges, and inspection of ignition source as well the analysis of fluids and refrigerants, resistance testing of the motors, and annual brushing and cleaning of tubes. In addition to the procedure(s) outlined in this PWS, the equipment manufacturer's recommended maintenance procedure(s) and/or instruction(s) shall be strictly adhered to.

C.3.1.3 Special Instructions: In addition to the procedure(s) outlined in this PWS, the equipment manufacturer's recommended maintenance procedure(s) and/or instruction(s) shall be strictly adhered to. The Contractor shall:
a) Review manufacturer's instructions.
b) Review and evaluate previous readings recorded in the maintenance log
c) Observe equipment during operation, including gauges and indicator lights
d) Verify pumps are operating within acceptable tolerances
e) Verify water flow is at the appropriate pressure per manufacturer specifications
f) Follow lock out/tag out procedures at all times: De-energize or discharge all hydraulic, electrical, mechanical, or thermal energy prior to beginning work.
g) Comply with the latest provisions of the Clean Air Act and Environmental Protection Agency (EPA) regulations as they apply to protection of stratospheric ozone.
h) No intentional venting of refrigerants is permitted. During the servicing, maintenance, and repair of refrigeration equipment, the refrigerant shall be recovered.
i) Record the quantities on the appropriate forms whenever refrigerant is added or removed from equipment (Reference sample forms provided in Technical Exhibit 1)
j) Recover, recycle, or reclaim the refrigerant as appropriate.
k) Follow regulations concerning removal of refrigerants and disposal of the item if disposal of the equipment item is required
l) Comply with EPA regulations as applicable if materials containing refrigerants are discarded
m) Treat refrigerant oils as hazardous waste.
n) Closely follow all safety procedures described in the Material Safety Data Sheet (MSDS) for the refrigerant and all labels on refrigerant containers.
o) Remove access covers prior to accomplishing check points.
p) Record all findings in the maintenance log (see Section 3.2.1).
q) Inspect and identify corrosion under insulation.

C.3.1.4 PM: Rotary Screw & Scroll Chiller Check Points-(Annually):
The Contractor shall:
1. Pump down system. Remove a small sampling of refrigerant using appropriate refrigerant recovery/recycling equipment, in accordance with manufacturer's instructions. Test the sample of refrigerant and oil to verify compliance with the Air Conditioning and Refrigeration Institute standards.
2. Perform spectro-chemical analysis of compressor oil annually to determine bearing conditions and replace as necessary.
3. Drain and replace oil in compressor oil reservoir including filters, strainers, and traps as oil testing indicates.
4. Review the Material Data Safety Sheets (MSDS) for proper disposal of used oil. If appropriate, recycle oil at an authorized station.
5. Change oil filter or element and clean housing.
6. Inspect filter for metal particles which could indicate bearing wear.
7. Clean strainer and nozzles of eductor.
8. Clean all water strainers in the system.
9. Inspect relief valves and piping. Check for valve for corrosion or foreign material and replace valves if required. Valves are safety devices for equipment and personnel; the contractor shall not attempt to repair or recondition.
10. Inspect evaporator and condenser tubes. The Contractor shall:
a) Inspect and clean (brushed) evaporator tubes of scale. Inspect and clean temperature sensors and flow switches.
b) Inspect and clean (brushed) condenser tubes. Condenser tubes from open tower systems may have contamination or hard scale.
c) Excessive corrosion, scaling, erosion and algae typically indicate improper or lack of an adequate water treatment program. Consult water treatment standard for proper procedures.
d) Reinstall new gaskets when removing the condenser and evaporator heads to facilitate tube cleaning.
e) Identify areas where evaporator and condenser tubes are fouled
11. Test for leaks per manufacturer's instructions. Refrigerant leak detection may be conducted with an electronic halide leak detectors, ultrasonic leak detectors or a soap bubble solution will be used along with dry nitrogen to pressurize chiller. If leaks are not able to be stopped or corrected, the Contractor shall report leak status to the COR.
12. Measure refrigerant levels.
13. Pull vacuum on refrigeration machine in accordance with manufacturer's instructions. Add refrigerant as required per specifications.
14. Megger compressor and oil pump motors and record readings.
15. Measure voltage supplied to motors, switches, and controls.
16. Tighten all starter, control panel, motor terminals, overloads, and oil heater leads. Loose connections can cause voltage spikes and overheating leading to malfunctions and failures.
17. Check all electrical contacts for wear and pitting.
18. Check and calibrate overloads, record trip amps and trip times.
19. Check and calibrate safety controls.
20. Check external interlocks, flow switch and pumps.
21. Check dash pot oil in main starter (add as necessary according to OEM standards)
22. Check compressor(s) sequencing, if multiple stage system
23. Check pressure and temperature transducers against gauge on both the oil, refrigerant and water side systems.
24. Clean the work area. Properly recycle or dispose of materials in accordance with environmental regulations.

C.3.1.5 PM: Centrifugal Chillers-Annually:
The Contractor shall:
1. Lubricate drive couplings.
2. Check and correct alignment of drive couplings.
3. Lubricate motor bearings (non-hermetic)
4. Lightly lubricate vane control linkage bearings, ball joints and pivot points. The Contractor shall not lubricate the shaft of the vane operator.
5. Remove refrigerant in accordance with manufacturer's instructions. Sample test the refrigerant and oil to verify compliance with the Air Conditioning and Refrigeration Institute standards.
6. Perform spectro-chemical analysis of compressor oil annually to determine bearing conditions and replace as necessary.
7. Drain and replace oil in compressor oil reservoir including filters, strainers, and traps as oil testing indicates. Per manufacturer recommendations, the Contractor shall change oil after the first year of operation and every five (5) years thereafter.
8. Review the Material Data Safety Sheets (MSDS) for proper disposal of used oil. Recycle oil at an authorized station if appropriate.
9. Change oil filter and clean strainer.
10. Change refrigerant filter/drier on cooling line to motor (hermetic). Check moisture indicator sight glass and if moisture present find source of water leak.
11. Clean all water strainers in the system.
12. Inspect relief valves and piping. Check valve for corrosion or foreign material and replace valves. Valves are safety devices for equipment and personnel. The Contractor shall not attempt to repair or recondition.
13. Check pressure and temperature transducers against gauge on both the oil, refrigerant and water side systems.
14. Inspect evaporator and condenser tubes. The Contractor shall:
a. Inspect and clean (brush) evaporator tubes of scale. Inspect and clean temperature sensors and flow switches.
b. Inspect and clean (brush) condenser tubes. Condenser tubes from open tower systems may have contamination or hard scale.
c. Excessive corrosion, scaling, erosion and algae typically indicate improper or lack of an adequate water treatment program. Consult water treatment standard for proper procedures.
d. Reinstall new gaskets when removing the condenser and evaporator heads to facilitate tube cleaning.
e. Identify areas where evaporator and condenser tubes are fouled

15. Test for leaks per manufacturer's instructions. Refrigerant leak detection may be conducted with an electronic halide leak detectors, ultrasonic leak detectors or a soap bubble solution along with dry nitrogen to pressurize chiller. If leaks are not able to be stopped or corrected, the Contractor shall report leak status to the COR.
16. Measure refrigerant levels.
17. Pull vacuum on refrigeration machine in accordance with manufacturer's instructions. Add refrigerant as required per specifications
18. Megger compressor and oil pump motors and record readings.
19. Measure voltage supplied to motors, switches & controls.
20. Check dash pot oil in main starter.
21. Tighten all starter, control panel, motor terminals, overloads, and oil heater leads. Loose connections can cause voltage spikes and overheating leading to malfunctions and failures.
22. Check all contacts for wear and pitting.
23. Check and calibrate overloads, record trip amps and trip times.
24. Check and calibrate safety controls.
25. Clean the work area. Properly recycle or dispose of materials in accordance with environmental regulations.

C.3.1.6 PM: Chiller Control Panel-Annually: This standard applies to control panels that are installed to protect and control the operation of central refrigeration machines (chillers). Typically the control panel is mounted on the chiller and controls chiller capacity, demand limit, temperatures, pressures as well as shut downs and safeties. The standard includes service to controllers, transmitters, sensors, and relays, associated with the central control panel.

Check Points
The Contractor shall:
1. Read and understand the manufacturer's instructions before making any adjustments or calibrations.
2. Obtain "As Built" diagrams of the control and safety systems.
3. Schedule work with operating personnel, as needed.
4. Clean and calibrate all controlling instruments (including temperature and pressure transducers) in accordance with manufacturer's instructions and maintenance standards.
5. Ensure appropriate site personnel are notified that alarms may result from testing and can be disregarded until testing is completed.
6. Replace defective control safeties found while performing preventive maintenance
7. Check and clean all electrical contacts and pneumatic orifices.
8. Check pneumatic tubing for leaks or damage. Repair or replace as required.
9. Check electrical wiring insulation and connections. Tighten or replace if necessary.
10. Replace recorder charts for temperatures and kilowatt and add ink if applicable.
11. Check for bad indicator lights and gauges and replace as necessary.
12. Test all controllers and set at proper set points.
13. Check operating data and analyze for proper operation. Note unusual conditions including compressor surge on maintenance log.

C.3.1.7 PM: Refrigerant Monitor (Annually):
The Contractor shall:
1. Wipe down outside of unit.
2. Replace air filter on air sample intake to unit. When clogged, air flow will be restricted and a filter or flow fault will occur. The Contractor shall take samples from air surrounding the unit or through a sample tube from a remote location.
3. Calibrate the monitor and ensure that it continuously measures and displays the specific concentration and is capable of indicating, alarming, and automatically activating ventilation system. Calibrate unit with gas canisters that have specific levels of refrigerant. Two calibrations are required, Zero to calibrate when no refrigerant present and SPAN to calibrate level of refrigerant in parts per million (ppm) when unit should alarm. A ZERO scrubber (carbon filter) may also be used which will remove all impurities form air giving a zero reading.
4. The ppm level to alarm at varies based on refrigerant type; see International Machine code refrigerant classification. Name plate on unit should have levels listed.
5. Check that all relays sent to remote equipment close or open upon alarm.
6. Check remote audible and visual alarms located inside and outside room entrances to warn people of leak and to ensure proper operations

C.3.1.8 PM: Non-Destructive Tube Analysis (Eddy Current Analysis) (3-year) Special Instructions:
The Contractor shall:
1. Coordinate performance of this PM activity with performance of annual PM on the central or packaged chilled water units. Schedule outage with operating personnel. Eddy Current Testing shall be performed within ninety (90) days following contract award. Subsequent testing shall be performed during Option year 3, if exercised.
2. Complete an eddy current test of all heat exchanger tubes, both evaporator and condenser
3. Perform the test in accordance with current requirements and procedures of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel Code Section V Nondestructive Examination, Article 8, Eddy Current Examination of Tubular Products and applicable recommended practice standards of the American Society for Testing and Materials for Eddy Current Testing.
4. Use a Certified Level II or higher technician or equivalent for this analysis in accordance with the American Society of Non-destructive Testing Recommended Practices, SNT-TC-1A, or current version.
5. The test will be witnessed by the COR or designated inspector.

Check Points:
The Contractor shall:
1. Prepare equipment for non-destructive testing (NDT). Remove heat exchanger heads, piping, clean tubes, and erect scaffolding as necessary.
2. Record test as required by the ASME code Section V (Article 8 - Appendix I, Article I-20).
3. Confirm system calibration hourly.
4. Follow the written procedure in paragraph I-23, Article 8 - Appendix I in the ASME code.
5. Provide strip chart recordings for:
a. Each calibration standard and artificial discontinuity comparator used. The Contractor shall annotate to identify each defect machined in the standard and calibration of each division on the chart.
b. Typical good tube in each bundle
c. Annotate to identify each defective tube. Indicate nature and extent of defect.
6. Test each tube to detect, as a minimum: leaks, saddle damage, pitting, interior erosion/corrosion, gasket condition, presence of "tramp" metal, presence of tube sheet condition.
7. Correct deficiencies as directed.
8. Restore equipment to service.

Reports and Records:
The Contractor shall:
1. Maintain a copy of the magnetic tape record (or electronic file used with more modern equipment) furnish record if requested by the Government.
2. Provide to the COR a preliminary job site report as soon as the test is completed.
3. Provide two (2) complete test reports within ten (10) working days following completion of the test to include the following:
a. Written test procedure
b. Recommendations - The Contractor shall list all tubes recommended for replacement or isolation.
c. Complete description of defects (location, depth, inside or outside surface).
d. Map location - The Contractor shall show tube row, number, and support for each tube bundle.
e. Name of technician performing tests and evaluating data.
f. Contractor's certification of technician qualifications.

C.3.1.9 PM: Cooling Tower Cleaning (Semi-Annually). The Contractor shall perform semi-annual maintenance twice a year: once in the spring and once in the fall.

Special Instructions:
The Contractor shall:
1. Strictly adhere to the equipment manufacturer's recommended maintenance procedure(s) and/or instruction(s) in addition to the procedure(s) outlined in this standard.
2. Perform work before seasonal start-up (unless system has remained clean and free of bio-deposits), before seasonal shutdown, and semi-annually during the cooling season.
3. Drain and clean at least twice per year if unit is not used year round.
4. Review manufacturer's instructions.
5. Follow lock out/tag out procedures at all times. De-energize or discharge all hydraulic, electrical, mechanical, or thermal energy prior to beginning work.
6. Use respiratory protection as required.
7. Ensure that there are safe and sturdy ladders and platforms to perform the lifting and cleaning required.
8. If biological growth is excessive, the Contractor shall notify the COR who will in turn review the tower treatment program with a qualified water treatment specialist.

Check Points:
The Contractor shall:
1. Shut down, drain, and flush the cooling tower with water.
2. Contractor shall check with Utility System Repair Operators-USROs and Environmental Division to determine if there are any restrictions on discharging the water. The Contractor shall test PH levels with a calibrated flowmeters and demonstrate to the COR that PH are between 7.5 -9.5 PH prior to discharge.
3. Isolate the cooling tower from the rest of the condenser water system where applicable.
4. Clean the wet deck, remove all debris, and dispose of properly.
5. Inspect the tower, the tower basin for sediment and sludge, and any biological growth.
6. Clean the tower, floor, sump, fill, spray pans and nozzles and removable components including access hatches, ball float, and other fittings until all surfaces are clean and free of loose material using low pressure water hose or brushes. Clean cracks and crevices where buildup is not reached by water treatment.
7. Clean all system strainers and strainer housings.
8. Remove drift eliminators and clean thoroughly using a hose, steam, or chemical cleanser.
9. Check fan and air inlet screens and remove any dirt or debris.
10. Reassemble components, and fill tower and cooling system with water.
11. Monitor the water pH and maintain pH within a range of 7.5 to 9.5. The pH may be monitored with litmus paper or a pH meter.
12. Perform the following if a more thorough disinfectant cleaning is needed:
a. Add a silicate-based low or non-foaming detergent as a dispersant at a dosage of 10-25 pounds per thousand gallons of water in the system.
b. If the total volume of water in the system is not known, it can be estimated to be ten (10) times the recirculating rate (gallons per minute) or 30 gallons per ton of refrigeration capacity.
c. The dispersant is best added by first dissolving it in water and adding the solution to a turbulent zone in the water system, such as the cooling tower basin near the pump suction.
d. The Contractor shall contact a professional water treatment specialist for a dispersant which may be safely used without interfering with the operation of the system.
13. Add chlorine disinfectant to achieve 25 parts per million (ppm) of free residual chlorine.
a. Maintain ten (10) ppm of free residual chlorine in water returning to the cooling tower for 24 hours.
b. A swimming pool test kit may be used to monitor the chlorine. The Contractor shall follow the manufacturer's instructions. Test papers such as those used to monitor restaurant sanitizing tanks may also be used.
c. The Contractor shall monitor every 15 minutes for two (2) hours to maintain the 10 ppm level. Add chlorine as needed to maintain this level.
d. Two (2) hours after the slug dose or after three (3) measurements are stable at 10 ppm of free residual chlorine, the Contractor shall monitor at two (2) hour intervals to maintain the 10 ppm of free residual chlorine.
e. Some kits cannot measure 10 ppm. In this case, the Contractor shall dilute the test sample with distilled water to bring it within the test set range.
f. After 24 hours, drain the system (check with state to determine if there are any restrictions on discharging the water).
g. Adjust bleed, float, central valve for desired water level.
h. Open any building air vents that were closed prior to the cleaning of the cooling tower.
i. Implement an effective routine treatment program for microbial control.
j. Document all maintenance and cleaning procedures by date and time. Record the brand name and the volume or weight of chemicals used.

C.3.1.10 PM: Cooling Tower Maintenance (Annually):

Special Instructions:
The Contractor shall:
1. Strictly adhere to the equipment manufacturer's recommended maintenance procedure(s) and/or instruction(s) in addition to the procedure(s) outlined in this standard.
2. Review manufacturer's instructions.
3. Schedule performance of this PM activity prior to seasonal start-up. Consider the time needed to effect any required repairs.
4. Perform cleaning of the tower in accordance with PM standard
5. Clean cooling tower(s) before performing this PM activity.
6. Use Respiratory Protection as required.
7. Properly dispose of any debris, excess oil, and grease.

Check Points (Exterior Structural)
The Contractor shall:
1. Inspect louvers for correct position and alignment, missing or defective items, and supports.
a. Inspect casings and attaching hardware for leaks or defects. Check the integrity and secure attachment of the corner rolls.
b. Examine tower from the interior. Extensive damage may require a corrective maintenance service order to replace with fiberglass sheathing.
c. Inspect condition of access doors and hinges. Repair as necessary.
d. Inspect the distribution system including flange connectors and gaskets, caulking of headers on counterflow towers, deterioration in distribution basins, splash guards, and associated piping on crossflow towers. Check construction for warpage, splitting, and gaps if configured with water troughs.
e. Examine the drain boards for damage and proper drainage. Check the fasteners.
f. Inspect stairways including handrails, knee rails, stringers, structure and fasteners for rot, corrosion, security and acid attack.
g. Shake ladders to verify security, and check all rungs.
h. Check the security, rot, and corrosion on walkway treads. Check treads, walkways, and platforms for loose, broken, or missing parts. Tighten or replace as necessary.
i. Check ladders for corrosion and rot. Verify compliance with Occupational Safety and Health regulations regarding height requirements. Check ladder security.
j. Check fan decks and supports for decay, missing and broken parts, and gaps. Check the security.
k. Securely anchor fan cylinders. Check fastening devices. Note any damaged, missing, or corroded items. Watch for corrosion of steel. Verify proper tip clearance between the fan blade and interior of cylinder. Verify compliance with OSHA requirements regarding height. Check its condition.
l. Apply protective coatings as needed on exterior surfaces including the cooling tower's structural dunnage. Be sure rust and dirt have been removed first.

Check Points (Interior Structural):
The Contractor shall:
1. Inspect the distribution system piping for decay, rust, or acid attack. Check the condition and tightness of connections and branch arms. Observe spray pattern of nozzles if possible and note missing and defective nozzles. Note condition of the redistribution system under the hot water system.
2. Inspect mechanical equipment supports and fasteners for corrosion. Check condition of springs or rubber vibration absorption pads, including adjusting bolts, ferrous members, and rubber pads.
3. Check valves and operating condition of fire detection system. Check for corrosion of pipes and connectors. Check wiring of any thermocouple installed.
4. Check drift eliminators and supports. Remove any clogging debris. Replace missing blades.
5. Inspect tower fill for damage, ice breakage, deterioration, and misplaced, missing, or defective splash bars.
6. Examine interior structural supports. Check condition of steel internals. Check condition and tightness of bolts.
7. Inspect the nuts and bolts in partitions for tightness and corrosion. Look for loose or deteriorated partition boards. Note if partitions are installed so as to prevent wind milling of idle fans. Make sure wind walls parallel to intake louvers are in position. Ensure boards and transit members are securely fastened. Check condition of wood or steel supports for rot and corrosion.
8. Inspect steel basins for corrosion and general condition. Inspect concrete basins for cracks, breaking joints, and acid attack.
9. Check all sumps for debris, condition of screens, antiturbular plates, and freely operating drain valves.

The Contractor shall:
1. Check alignment of gear, motor, and fan.
2. Inspect fans and air inlet screens and remove any dirt or debris.
3. Inspect and replace fan belts as required.
4. Check hubs and hub covers for corrosion, and condition of attaching hardware.
5. Inspect blade clamping arrangement for tightness and corrosion.
6. Inspect and clean all water level probes.
7. Gear box (if applicable):
The Contractor shall:
a) Clean out any sludge.
b) Change oil. Ensure gear box is full to avoid condensation.
c) Rotate input shaft manually back and forth to check for backlash.
d) Move the shaft radially to check for wear on the input pinion shaft bearing.
e) Look for excessive play of the fan shaft bearings by applying a force up and down on the tip of a fan blade. Note: Some output shafts have a running clearance built into them.
8. Power transmission.
The Contractor shall:
a) Check that the drive shaft and coupling guards are installed and that there are no signs of rubbing. Inspect the keys and set screws on the drive shaft, and check the connecting hardware for tightness. Tighten or install as required.
b) Look for corrosion, wear, or missing elements on the drive shaft couplings.
c) Examine the exterior of the drive shaft for corrosion, and check the interior by tapping and listening for dead spots.
d) Observe flexible connectors of both ends of the shaft.
e) Inspect bearings, belts, and pulleys for excessive noise, wear or cracking, alignment, vibration, looseness, surface glazing, tension. Replace or repair as required.
9. Check water distribution. Adjust water level and flush out troughs if necessary. Check all piping, connections, and brackets for looseness. Tighten loose connections and mounting brackets. Replace bolts and braces as required.
10. Check nozzles for clogging and proper distribution.
11. Inspect keys and keyways in motor and drive shaft.

The Contractor shall:
1. Check electric motor for excessive heat and vibration. Lubricate all motor bearings as applicable. Remove excess lubricant.
2. Inspect fused disconnect switches, wiring, conduit, and electrical controls for loose connections, charred or broken insulation, or other defects. Tighten, repair, or replace as required.
3. Remove dust from air intakes, and check for corrosion. Check Totally Enclosed Fan Cooled (TEFC) motors for conditions of air passages and fans.
4. Check operational status of drain moisture plug if one is installed.
5. Check amps and volts at operating loads; recommend pitching of fan blades to COR to compensate.
6. Look for corrosion and security of mounting bolts and attachments.
7. Check operation of sump heaters

Winterizing: (if applicable) If Cooling Tower is seasonal.
The Contractor shall:
1. Consult with the COR on which cooling towers will be designated as seasonal cooling towers.
2. Check that all electrical energy switches condenser pumps, fans, sump heaters have been de-energized and tagged out.
3. Check that tower is drained, water make-up has been secured at an interior building location tagged off and exterior line is drained and left open to prevent freezing.
4. Check that tower drains are locked in the open position and tagged.
5. Check to ensure piping heaters are energized and in working conditions if applicable.
6. Check that tower supply and return lines have been drained down to a point inside the building where water in them will not freeze and that the water has been pre-treated to prevent corrosion and bacteria growth.
7. Check that any water treatment pumps that serve the cooling tower system have been secured.
8. Drain and secure cooling tower filtering systems that are exposed to freezing conditions

C.3.1.11 Reporting
The Contractor shall:
1. Ensure the Inspector notes the actual operating and maintenance practices during all tests. Make and record a determination as to their acceptability.
2. Record Review: Review the chiller log and records of maintenance and feed water treatment to ensure that regular and adequate tests have been made on the chiller and controls.
3. Record all findings in the Plant Operator maintenance log
4. Compile and provide a typewritten report in electronic format to the COR clearly describing the work accomplished and the deficiencies identified.
5. Reports and Records: Inspection Report of Chiller, Chiller Towers, Refrigerant Monitoring system, shall be prepared for each chiller and associated equipment when it is inspected. Reference sample report in Technical Exhibit I.
6. Conclusions: Ensure all defects or deficiencies in condition, operating and maintenance practices of the chiller and auxiliary equipment are discussed by the inspector with the owner or user at this time.

C.3.2. Corrective Maintenance T&M Repairs (Service Orders): A Service Order (SO) is a corrective maintenance request generated by the Contractor which identifies a deficiency and provides a recommended solution. The Contractor shall notify the COR upon discovery of any repairs or damages, not classified as preventative maintenance. All CM tasks will follow the Service Order Process described within. Service order development will be initiated from service calls, Government personnel requests, or Contractor technicians. The technical scope and price proposal shall be submitted to the Government by the Contractor with sufficient detail and supporting documentation per contract requirements. The Government will validate the requirement, determine the priority, and attain approval. Routine/Urgent priorities will be firm fixed priced before a notice to proceed. The Emergency Service Orders will be billed directly from the Time & Material (T&M) CLIN. The Contractor shall complete all the required information on the service order form accurately and completely and submit a firm fixed price proposal to the Contracting Officer (KO) or their designated representative. The Government will review the proposal and upon approval the Contracting Office will generate a Notice-to-Proceed (NTP) for the specific task. The Contractor shall not proceed with any repairs prior to written notification from the KO or COR.

C.3.2.1 The Government reserves the right to accomplish any SO with other sources. The Government may require to review equipment and component specifications and submittals for any equipment and building materials prior to installation.

C.3.2.2 Service Order Proposal Structure: The Contractor shall, within the time specified (defined at time of issue of a SO proposal and based on the size and complexity of the scope the individual SO), provide a proposal, presented in a professional format and on official company letterhead, to perform repairs and include the following:
1. A detailed description of the work to be performed including supporting documentation as required.
2. The required number of labor hours, including any overtime, by labor classification and schedule billing rate for each task.
3. Direct material costs, equipment rentals, travel subsistence, or similar costs.
4. Sub-contractor costs, if required, including applicable markups (overhead profit) to labor and materials.
5. Contractor Labor Cost
6. Contractor Applicable Burdens
7. Total quoted price.
8. Proposed completion or delivery dates (Schedule).

C.3.2.3 Service Order Ordering Authority: Service Orders must be approved by the Contracting Officer (KO) or the designated authority before work commences. The Contracting Officer may assign a local Contracting Officer's Representative (COR) to determine priority level and validate requirements as identified in their appointment letter. The COR may approve routine and urgent service orders equal to or less than $2,500.00. If during the execution of urgent and routine service order work authorized by the COR, the Contractor anticipates that the completions of the SO work will exceed the $2,500.00 limit, the Contractor shall cease work and verbally notify the COR. The verbal notification shall be followed up by written notification to the COR within one (1) working day. Contractor shall await further instructions from the COR and/or the Contracting Officer.

C.3.2.4 Service Order Proposal Evaluation: The Contractor's proposal will be evaluated by the Government to determine if the scope of the SO is clearly and accurately identified and if the quoted costs for labor, material and equipment are reasonable and properly documented. The Contractor shall negotiate the proposal in good faith with the Government. Once the Contractor and Government agree upon the negotiated price, the price becomes a firm fixed-price and the Government may issue a NTP for the work. The cost proposal shall be valid for sixty (60) calendar days.

C.3.2.5 Service Order Response Times: If the Contractor determines that repairs to a device/system cannot be made within the specific time required, the Contractor shall furnish to the KO or designated representative for approval a written justification stating the reason why the device will be out of service in excess of the specific time. The justification shall include a description of the repairs required, mitigation measures, estimated time required to make repairs, parts required/ordered, and the estimated date of completion to bring the device/system back into full service. No exception will be made without the written approval unless alternative process has been approved by the KO or authorized COR. Contractor shall provide the supplier's statement of estimated delivery date for any delays due to parts availability. The Contractor shall respond to all service calls within the time frames below:
1. Emergency: two (2) hour response, four (4) hour mitigation, eight (8) hour completion
2. Urgent: twenty-four (24) hour response, forty-eight (48) hour mitigation, five (5) day completion
3. Routine: forty eight (48) hour response, ten (10) day completion

C.3.2.6 Service Order Priority: The Contractor shall respond to all service orders within the required priority time frame from the initial request and follow the approved service order process. The Service Order priority level will be determined using the following criteria:

C. Emergency Service Orders (Priority 1): Maintenance and repair work which requires immediate action, including diverting personnel from other tasks. Emergency work is necessary for operations support, life safety, and prevention of damage to property, or national security. Immediate corrective action shall be taken and shall be pursued on a continuous basis until permanent repairs are completed unless otherwise directed by the authorized Government representative. The Contractor shall maintain or provide essential services to critical equipment and facilities and maintain critical environmental conditions, or as otherwise determined. When notified by the Contracting Officer (KO) or their designated representative, the Contractor shall respond onsite to emergency service calls for repairs within a maximum time of two (2) hours after the notification. After being notified, the Contractor shall furnish a Rough Order of Magnitude (ROM) estimate and KO/COR will issue a NTP and set a Not to Exceed (NTE) amount. The Contracting Officer may authorize the Contractor either verbally or in writing, to take immediate action to accomplish emergency repairs. The Contractor shall then mitigate and/or fully complete repairs for the emergency. The Contractor shall complete troubleshooting and any required mitigation within four (4) hours of arriving onsite. If the system deficiency cannot be mitigated within the four (4) hour limit or it becomes apparent that the cost could exceed the NTE amount, the Contractor shall notify the KO/COR immediately. The Contractor shall complete repair(s) within eight (8) hours of arriving onsite, 24 hours a day, seven (7) days a week. Contractor shall contact the KO/COR on all emergency SO's when they are completed and submit all documentation the following business day by 0800 hours. Contractor's employees who respond to emergency calls after normal duty hours shall communicate with the Government representative prior to starting work and after work is complete to discuss what work was accomplished.

C. Completion of an Emergency Service Order is defined as the restoration of a piece of equipment, a system, or a facility to such condition that it may be effectively utilized for its designated purposes and reduces risk to life safety, vital equipment damage, or national security.

C. Mitigation of an Emergency Service Order is defined as successful efforts to eliminate the life safety or security risks associated to a particular corrective maintenance task. Mitigation may be the only option and fully completing the repair is impossible. In a few cases, the parts required for repair may be long lead items, and in this case, Contractor shall make a good faith effort to mitigate the risk within the four (4) hou

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