RFP-W90VN924R0095.pdf

M599014085LCS001

NON-WORK PLAN CY24 LCS PROGRAM

a. This is a Request for Proposal (RFP) issued to existing Korea-Wide General Construction Multiple Aw ard Indefinite Delivery Indefinite Quantity (MAIDIQ) Local Contractors only.

Contract Number: W91QVN-24-D-0059, 0060, 0061, 0062, 0063, 0064, 0065, 0066, 0067, 0068, 0069, 0070, 0071, 0072, 0073, 0074, 0075, 0076, 0077, 0078, 0084, 0085, 0098, 0102 & 0106.

b. Site Visit: All MAIDIQ contractors w ho intend to propose on this solicitation are strongly recommended to attend the Site Visit. See Section L for the schedule.

c. If the contractor is unable to submit the proposal in response to this RFP, the contractor shall submit the “No-off er letter” by closing date and time specif ied in the solicitation.

d. Contract Price Range: Pursuant to FAR 36.204, the estimated price range of this project is betw een $5,000,000 and $10,000,000.

e. SUBJECT TO THE AVAILABILITY OF FUNDS (SAF): Funds are not presently available for this project. No contract aw ard w ill be made under this solicitation until appropriated funds are made available.

MS. KWON, CHONG-HYON 315-763-5693

NOTE: In sealed bid solicitations "offer" and "offeror" mean "bid" and "bidder".

10. THE GOVERNMENT REQUIRES PERFORMANCE OF THE WORK DESCRIBED IN THESE DOCUMENTS

NEGOTIATED

14-May-2024

(RFP)

(IFB)

X

CALL:

Repair by replacement Bldg# 1115 HVAC System Camp Mujuk, Pohang Korea

B. TELEPHONE NO. (Include area code) (NO COLLECT CALLS)

See Item 7

2. TYPE OF SOLICITATION

SEALED BID

3. DATE ISSUED

9. FOR INFORMATION A. NAME

SOLICITATION

NSN 7540-01-155-3212 1442-101 STANDARD FORM 1442 (REV. 4-85)

Prescribed by GSA

FAR (48 CFR) 53.236-1(e)

11. The Contractor shall begin performance w ithin _______10 calendar days and complete it w ithin ________456 calendar days after receiving aw ard, X notice to proceed. This performance period is X mandatory, negotiable. (See _________________________Section F

12 A. THE CONTRACTOR MUST FURNISH ANY REQUIRED PERFORMANCE AND PAYMENT BONDS?

(If "YES," indicate within how many calendar days after award in Item 12B.)

YES X NO

13. ADDITIONAL SOLICITATION REQUIREMENTS:

A. Sealed offers in original and __________ copies to perform the w ork required are due at the place specif ied in Item 8 by ___________ local time ______________17 Jun 2024 (date). If this is a sealed bid solicitation, offers must be publicly opened at that time.

shall be marked to show the offeror's name and address, the solicitation number, and the date and time of fers are due.

B. An offer guarantee is, X is not required.

C. All offers are subject to the (1) w ork requirements, and (2) other provisions and clauses incorporated in the solicitation in full text or by reference.

D. Offers providing less than _______180 calendar days for Government acceptance after the date offers are due w ill not be considered and w ill be rejected.

SOLICITATION, OFFER,

AND AWARD

(Construction, Alteration, or Repair)

1. SOLICITATION NO.

IMPORTANT - The "offer" section on the reverse must be fully completed by offeror.

4. CONTRACT NO.

7. ISSUED BY CODE

411TH CONTRACTING SUPPORT BRIGADE, KOREA

RCO DAEGU, UNIT #15682

APO AP 96218-5682

UNITED STATES

W90VN9

PAGE OF PAGES

1 OF

CODE

(Title, identifying no., date):

12B. CALENDAR DAYS

01:00 PM (hour)

Sealed envelopes containing offers

5. REQUISITION/PURCHASE REQUEST NO. 6. PROJECT NO.

MFK 59999-23-2

8. ADDRESS OFFER TO (If Other Than Item 7)

FAX:TEL: TEL: FAX:

W90VN924R0095 45

20B. SIGNATURE

(REV. 4-85)STANDARD FORM 1442 BACK

TO SIGN

NSN 7540-01-155-3212

SOLICITATION, OFFER, AND AWARD (Continued) (Construction, Alteration, or Repair)

CODE FACILITY CODE

17. The offeror agrees to perform the w ork required at the prices specif ied below in strict accordance w ith the terms of this solicitation, if this offer is accepted by the Government in w riting w ithin ________ calendar days after the date offers are due.

the minimum requirements stated in Item 13D. Failure to insert any number means the offeror accepts the minimum in Item 13D.)

AMOUNTS SEE SCHEDULE OF PRICES

18. The offeror agrees to furnish any required performance and payment bonds.

19. ACKNOWLEDGMENT OF AMENDMENTS

(The offeror acknowledges receipt of amendments to the solicitation -- give number and date of each)

AMENDMENT NO.

DATE

20A. NAME AND TITLE OF PERSON AUTHORIZED TO SIGN

OFFER (Type or print)

AWARD (To be completed by Government)

21. ITEMS ACCEPTED:

22. AMOUNT 23. ACCOUNTING AND APPROPRIATION DATA

24. SUBMIT INVOICES TO ADDRESS SHOWN IN ITEM

(4 copies unless otherwise specified)

CODE

(Insert any number equal to or greater than

20C. OFFER DATE

25. OTHER THAN FULL AND OPEN COMPETITION PURSUANT TO

10 U.S.C. 2304(c) 41 U.S.C. 253(c)

CODE27. PAYMENT WILL BE MADE BY:26. ADMINISTERED BY

(Include ZIP Code)14. NAME AND ADDRESS OF OFFEROR 15. TELEPHONE NO. (Include area code)

See Item 14

(Include only if different than Item 14)16. REMITTANCE ADDRESS

30B. SIGNATURE

29. AWARD (Contractor is not required to sign this document.)

document and return _______ copies to issuing office.) Contractor agrees Your of f er on this solicitation, is hereby accepted as to the items listed. This award con-to f urnish and deliv er all items or perf orm all work, requisitions identif ied summates the contract, which consists of (a) the Gov ernment solicitation and on this f orm and any continuation sheets f or the consideration stated in this y our of f er, and (b) this contract award. No f urther contractual document is contract. The rights and obligations of the parties to this contract shall be necessary .

gov erned by (a) this contract award, (b) the solicitation, and (c) the clauses, representations, certif ications, and specif ications or incorporated by ref er-ence in or attached to this contract.

30A. NAME AND TITLE OF CONTRACTOR OR PERSON AUTHORIZED 31A. NAME OF CONTRACTING OFFICER (Type or print)

30C. DATE

(Type or print)

TEL: EMAIL:

31B. UNITED STATES OF AMERICA 31C. AWARD DATE

BY

CONTRACTING OFFICER WILL COMPLETE ITEM 28 OR 29 AS APPLICABLE

(Contractor is required to sign this28. NEGOTIATED AGREEMENT

(M ust be fully completed by offeror)OFFER

W90VN924R0095

Section B - Supplies or Services and Prices

ITEM NO SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

0001 1 Job Work Class: K

FFP

Repair by Replacement Chiller and HVAC System in MARFORK Warfighting Headquarters, Bldg. No. 1115, Camp Mujuk (Non-Work Plan).

The Contractor shall provide all necessary resources for this requirement and perform Project No. MFK 59999-23-2 in accordance with the Statement of Work (SOW), Specification, Drawings, Terms and Conditions of this contract contained herein.

FOB: Destination

PURCHASE REQUEST NUMBER: M599014085LCS001

PSC CD: Z1AZ

NET AMT

ITEM NO SUPPLIES/SERVICES QUANTITY UNIT UNIT PRICE AMOUNT

0002 1 Job Estimated Cost for Work Hazard

FFP

Losses are Zero (0) FOB: Destination

PSC CD: Z1AZ

NET AMT

Section C - Descriptions and Specifications

STATEMENT OF WORK

PROJECT NO TITLE LOCATION

MFK 59999-23-2 Repair by Replacement Building 1115 HVAC System Camp Mujuk

DESCRIPTION: The work to be performed for completion of this project shall be in general as described below and executed by one or more of the groups.

a. Work by Contractor:

(1) The contractor shall provide all labor, tools, equipment, supplies, and any other resources necessary to accomplish the scope of work contained herein as indicated in the drawings and in accordance with the specifications and drawings.

b. Work by In-House Forces: Not applicable to this project.

c. Work by Troop Labor: Not applicable to this project.

PRINCIPAL FEATURES: This project includes, but will not be limited to the following principal features:

Schedule # I, Repair/Maintenance (K): All work shall be in accordance with the attached drawings, specifications, and this scope of work.

ADDENDUM to Drawing Package

Prior to starting any demolition work the contractor shall install a generator, day tank and backup generator with a secondary fuel tank large enough to power the server equipment, cooling and redundant cooling equipment and UPS and any other equipment deemed mission essential by the command in server room U31 and the adjacent spaces as required. This generator and associated equipment will be kept operational 24/7/365 for a minimum period of 240 days or the entire period the building power outage is required. There will be NO unscheduled power outages of the equipment in room U31 without the MARFORK and/or Camp Mujuk Command Staff Approval. The generator shall be tied into the building’s automatic transfer switch and backup emergency generator. The contractor shall make sure that periodic maintenance is being performed on the ATS and Main/BU Generator during the project Period of performance.

In addition, after all work is complete the contractor shall paint the walls and hard ceilings of every space with two

(2) coats of paint.

In addition, the contract shall replace the raised flooring in Rooms L15 (Open Office) and L29 (Operations Center) and replace it with raised flooring to match height and type to match existing.

All shop drawings and material submittals related to life safety and fire protection work are required to be reviewed and approved by a licensed Fire Protection Engineer IAW UFC 3-600 -01 before submission to the government designated Fire Protection Engineer.

ALL Life Safety and Fire Protection system work shall comply with UFC 3-600-01 “Fire Protection Engineering for Facilities”.

General Scope of Work:

B1115 Chiller Replacement Design in accordance with DoD Standard Design for chiller replacement design.

HVAC system modification project at B1115 to right size the system based on current mission cooling load and install redundancy in the facility system.

Provide new chiller and associated HVAC equipment with a 1+N redundancy to repair the central heating / cooling system. Provide second chiller for redundancy, sized to accommodate current mission conditions. Revise layout/ outdoor fencing as required to house additional equipment and piping.

Modify/replace the existing air distribution system, supply and return ducting, variable air volume (VAV) boxes, air handling units (AHU) as necessary for proper sizing, balancing, and functionality of the system as a whole.

Replace existing computer room air conditioning (CRAC) units with new properly sized CRAC units.

Replace existing direct expansion (DX) split air conditioning (AC) units with chilled water fan coil units (FCUs).

Upgrade/replace electrical service entry and subpanels and circuit breakers as required.

Modify/replace existing utility monitoring control system (UMCS) front-end for all the HVAC.

and electrical updates. All meter readings shall be connected to UMCS front-end.

Architectural Scope of Work:

Existing acoustical ceiling tile (ACT) and GWB(Gypsum wall board) ceilings are replaced with new acoustical ceiling tile (ACT) system and GWB(Gypsum wall board) ceiling with paint after the MECH/ELEC renovation works are done.

Fire Suppression

Existing System Description: B-1115 is protected throughout with existing automatic supervised wet-pipe sprinkler systems.

Scope of Work:

Sprinkler system is not anticipated to be impacted by the chiller renovation. Existing sprinkler system shall remain.

Any sprinkler heads that are damaged during construction shall be replaced with new at no additional cost to the government.

Fire Alarm and Mass notification System:

Existing Conditions

Existing addressable fire alarm and mass notification system is provided throughout the building.

Scope of Work:

Replace existing duct smoke detectors for AHU-1 and AHU-2. Control modules will be provided to shut down the associated AHU and remote test station. Sequence of operations will remain unchanged. Refer to mechanical drawing M-402 for duct smoke detectors and electrical drawing EP123 for location of existing fire alarm control panels. Due to the very minimal fire protection scope of work, all parties agreed at the 90% OBR meeting that duct smoke detectors would be shown on the mechanical drawing with a fire alarm specification 28 31 76.

Life Safety Analysis

Work in existing facilities to conform to the requirements of the Building Rehabilitation Chapter of NFPA 101

(UFC 3-600-01 §34-1.2.1)

Life Safety Code Analysis – NFPA 101

Occupancy Classification [NFPA 101, 6.1] Existing Building – Existing Business

Existing Buildings and Work Classifications [UFC 3-600-01 Section 34-1 and NFPA 101, Chapter 43]

Design and construction projects in existing buildings shall comply with NFPA 101 Building Rehabilitation Chapter except as specified in UFC 3-600-01.

Areas of the facility where no work is being performed must at a minimum meet existing occupancy chapter of

NFPA 101.

Modification work includes the following:

Modification of HVAC system to include new chillers and associated HVAC equipment.

Modify/replace existing air distribution system, supply, and return ducting, variable air volume boxes, air handling units as necessary.

Replace existing CRAC units with new.

Replace existing direct expansion split air conditioning units with chilled water fan coil units.

Replace existing direct digital control system with new.

Upgrade electrical service entry and subpanels and circuit breakers as required.

NFPA 101, 43.5 Modification work shall comply with the following requirements:

Modifications shall comply with Section 43.4 and 43.5.

Newly constructed elements, components, and systems shall comply with the requirements applicable to new construction.

Interior Fire Rating Requirements [NFPA 101, 8.7]

All interior non-load bearing fire barriers shall follow NFPA 101 requirements. In general, any area having a degree of hazard greater than that normal to the general occupancy shall be protected by one of the following means:

1. Enclosing the area with a fire barrier without windows that has a 1-hour fire resistance rating.

2. Protecting the area with automatic extinguishing systems.

3. Applying both 1 and 2 above where the hazard is severe. All areas are either protected with a fire barrier or protected with automatic extinguishing systems.

Fire and Smoke Damper Requirements [NFPA 101, 8.3 and 8.4]

Fire dampers are required at duct penetration of 2-hour rated assemblies or greater or at air transfer openings in any fire rated walls. Fire dampers are not required as there are no 2-hour rated walls or air-transfer openings at rated walls.

In coordination with mechanical design existing duct through rated shaft that has existing fire damper is remaining to exist and no new duct work is provided that crosses 2 hour rated walls.

No new fire dampers are to be provided as shown in design drawings.

Smoke dampers are required at duct penetration of smoke barriers or at air-transfer openings in smoke partition or smoke barrier walls. Smoke dampers are not required as there are no smoke barrier walls or air-transfer openings in smoke partition walls.

Number of Means of Egress [NFPA 101, 39.2.4]

A single exit is permitted from rooms and areas with common path of travel within the allowable limit. Two exits shall be provided on each story if a single exit exception above cannot be met. B-1115 is provided with at least two exits on each story.

Arrangement of Exits [NFPA 101, 39.2.5, 7.5.1.3.1 and 7.5.1.3.5]

In existing buildings, where more than one exit, exit access, or exit discharge is required from a building or portion thereof, such exits, exit accesses, or exit discharges shall be remotely located from each other and be arranged to minimize the possibility that more than one has the potential to be blocked by any one fire or other emergency condition.

Dead-end corridors shall not exceed 15 meters. Common path of travel shall not exceed 30 meters on a story protected throughout by sprinkler systems.

Travel distance shall not exceed 91 meters in business occupancies protected throughout by sprinkler systems.

Exit Discharge [NFPA 101, 39.2.7 and 7.7]

Exit discharge shall be arranged as follows:

1. Exits shall discharge directly to the building exterior.

2. The exit discharge shall provide direct and unobstructed access to a public way.

Emergency Lighting [NFPA 101, 39.2.9 and 7.9]

Emergency lighting shall be provided where any one of the following conditions exists:

1. The building is there or more stories in height.

2. The occupancy is subject to 50 or more occupants above or below the level of exit discharge.

3. The occupancy is subject to 300 or more total occupants. Emergency lighting is provided throughout the building.

Marking of Means of Egress [NFPA 101, 7.10]

Exit signs shall be arranged as follows:

1. Exits shall be marked by an approved sign readily visible from any direction of exit access.

2. Sign placement shall be such that no point in the exit access corridors is more than 30 meters from the nearest externally illuminated sign and is not in excess of the marked rating for internally illuminated signs.

3. A directional sign reading “EXIT” with a directional indicator showing the direction of travel to reach the nearest exit is not apparent.

Exit signs are provided throughout the building.

Portable Fire Extinguishers

General purpose portable fire extinguishers shall be provided as required by NFPA 101.

Business Occupancy – Fire extinguishers are required. Existing fire extinguishers are provided throughout the building.

Plumbing Scope of Work:

Remove condensate drains from Mechanical Equipment that is being removed.

Existing HVAC Systems:

Central Cooling System

The existing cooling system as scheduled, is comprised of a 151 kW (43.1 Ton), 5.6 LPS, high efficiency, air-cooled chiller, WC-1, located in the exterior equipment yard east of the main building.

This chiller provides cooling water to the building via an 80 mm underground chilled water supply and return (CHS/CHR) piping and a 5.6 LPS, 135 kPa of head, chilled water pump, P-2, located in the lower-level Mechanical Room. This chilled water is then pumped to three system level components, one cooling coil in each AHU- 1 & 2, with total cooling capacities of 71.5kW (20 Tons) and 57.4 kW (16.35 Tons), respectively, and fan coil unit, FCU-1, with a capacity of 2.2 kW (.63 Tons) that serves the Upper Floor Vestibule, U01. This system piping distribution is configured in a reverse return arrangement to better equalize the pressure drop between the components.

Supplementary Cooling Systems

In addition to the central chilled water system, this facility had three DX split systems that were original to the building construction and six additional DX systems that have been added since that time. The three original systems include two, Carrier, 3.5 kW (1T), DX split systems (ACU-1 and ACU-2) with wall mounted indoor units and grade mounted condensing units that serve Comm Room – U29 and L19. The other original system, CAU-1, is a 33 kW (9.5T), air-cooled DX system, which has a vertical, floor mounted, up-flow indoor unit and a grade mounted condensing unit and serves Server Room U31. Based on the summation of the information available, it appears as though the condensing unit for this system was ultimately installed in a different location or replaced after the original construction. The original location, as identified in the as-built documentation can be seen in the figure below. Additional review of this system is required to determine paired indoor and outdoor units for this system.

Heating System

The existing heating system as scheduled, is comprised of a 203 kW (Net Output), dual-fuel, water tube, hot water boiler, B-1, located in the lower-level Mechanical Room. This system, as well as the domestic hot water (DHW) heater, is connected to a 9,463-liter fuel oil storage tank for use in the event the natural gas service to this building is interrupted.

Once the hot water is generated at the boiler, it is then pumped to the system level devices by a 3.1 LPS, 135 kPa of head, hot water pump, P-1. The hydronic distribution for this system includes a 65 mm main and 50 mm riser with one hot water supply (HWS) and hot water reverse-return loop for each floor, upper and lower. This hot water system has five main types of heating equipment; these include: central AHU heating coils, VAV reheat coils, unit heaters, fan coils and finned tube radiators. The boiler shall be demolished and provided with new.

The first of the heating apparatus mentioned above, include one heating coiling in each AHU-1 & 2. These have total heating capacities of 32.5 kW and 25.9 kW, respectively, and provide the supply air preheat in each of the AHUs to 12.8 ºC. The second, VAV reheat coils, are room level coils that provide heated air as required to maintain the temperature setpoint in each of the applicable rooms or zones they serve. In total, there are 36 VAV reheat coils that provide anywhere from .43 kW of heating capacity to 7.3 kW. The final three hydronic heating devices present in this facility are three hot water unit heaters for the Mechanical, Electrical and AHU Rooms, one fan coil unit for the upper floor vestibule and one 900 mm section of finned tube located in the stairwell. These systems provide between .91 kW to 3.25 kW of heating capacity.

Supplementary Heating Systems

In addition to the hydronic heating devices listed above, there are multiple DX systems that appear to have the potential to provide supplemental heat. From Table 2 above, it was noted that five of these systems can provide heat and assumed to be heat-pump type units. Based on RFI responses received, these systems are not topically utilized for their heating capacity and heat pump systems appear to have been selected for their versatility.

The final heating devices at this facility, not part of the hydronic heating system, include five electric unit heaters.

These heaters provide between .5 kW and 1 kW to the various restrooms located throughout the facility.

HVAC Air Distribution

The existing central HVAC system is made up of two, VAV, AHU systems, AHU-1 and AHU-2 which serve the upper and lower level of this building respectively. AHU-1 is an indoor, size 17, horizontal, draw-thru, Carrier Aero Air Handler, model number 39MN17C010J5Q11XDS. This unit provides a maximum of 3,728 LPS of supply air (variable) and includes both a heating and cooling coil section, as mentioned above, a mixing box and a filter section. The return air for this unit is provided by a Greenheck, inline, belt driven, centrifugal return fan, RF-1, sized for 3,020 LPS and 186.8 Pa of external static pressure installed in the return ductwork located in the AHU Room.

The second air handling unit, AHU-2, is an indoor, size 14, horizonal, draw-thru, Carrier Aero Air Handler, model number 39MN17C010J5Q11XDS. This unit provides a maximum of 2,973 LPS of supply air (variable) and includes both a heating and cooling coil section, as mentioned above, a mixing box and a filter section. The return air for this unit is provided by a Greenheck, inline, belt drive, centrifugal return fan, RF-2, sized for 2,501 LPS and 186.8 Pa of external static pressure installed in the return ductwork located in the AHU Room.

Each of the two systems listed above utilize variable speed supply and return fans to control the airflow to and from the 36 VAV terminal units. The VAV terminal units provide conditioned air to the room level via overhead air distribution and modulate the airflow and heating coil as required to maintain the space temperature setpoints.

As indicated in the control documentation reviewed, the supply fan for each AHU is controlled and modulates to maintain a duct static pressure setpoint while the return fan tracks the supply airflow to maintain a constant volumetric airflow differential setpoint.

Ventilation Air

Ventilation air or outside air (OA) for this building is provided and distributed via AHU-1 & AHU-2. The air is ducted into each of the units from two, extruded aluminum, penthouse type intake louvers located on the roof of the building. It is unclear from the documents what the minimum ventilation airflow is, but the difference between the scheduled supply and return values for each of these systems is 707 LPS for AHU-01 and 471 LPS for AHU-02.

This airflow can be increased during economizer mode to match the full supply air value of the AHU as listed in the previous section.

Exhaust Air

In addition to the airside system components listed in the previous section, this building also utilizes multiple exhaust fans to serve the various small exhaust quantities required for the toilet rooms as well as the mechanical & electrical spaces.

HVAC Controls

As indicated in the existing documents, the controls system at this facility appears to be a DDC based LonWorks system. Although it was unable to be verified onsite during the survey, all mechanical equipment in the preceding sections appear as though they are monitored and controlled via the LonWorks system based on the as-built drawings. The only exception to this is the supplemental heating and cooling units detailed in Table 2. It is not known if these were integrated into the existing control system when they were added to the facility.

New Systems:

The new equipment to be added to this building includes new air-cooled chillers, chilled water pumps, chilled water (CRAH) type units with overhead supply and return distribution and chilled water cassette type fan coil units. The new air-cooled chiller plant will be comprised of two, new, 116 kW (30 Ton), variable speed, scroll type air-cooled chillers. These are each to be sized to provide half of the peak cooling load and will be able to provide cooling for both the normal as well as the exercise load scenarios. These new units will be installed on grade east of the building. In addition, the existing 151.6 kW (43.1 Ton), air-cooled chiller will remain to provide N+1 redundancy for the system. To accommodate the new chillers, the existing equipment yard be expanded to the south approximately 5.74 meters depending on the final layout.

To support the new chilled water capacity, two new pumps will be provided to the system and will be installed in the existing Mechanical Room. Based on preliminary selections, these pumps will be 3.73 kW and sized for N+1 redundancy. New CHS/CHR piping will also need to be provided as required to distribute the water to the room level devices below. The final equipment to be added as part of this proposed system is room level ceiling cassette fan coil units. Ceiling cassettes are chosen in lieu of ducted fan coil units in an effort to reduce new ductwork installation for the new work phase. Cassette units shall be selected that can fit within the typical 600mm x 600mm ceiling grid. At a minimum, these will be provided for the five large, high density cooling areas included in the table below. Each fan coil unit will have a dedicated thermostat to control cooling space temperature and each of these spaces will still be provided ventilation and heating from the central system. This addition will allow for cooling load to be removed from the existing central AHU system and reallocated as needed to serve other areas.

Demolition - Supplementary Cooling Units

In general, all areas where new fan coil units are specified per Table 8, existing supplemental spit system DX equipment, will be removed. This includes both the indoor evaporator & fan system, outdoor condensing units, and any controls and electrical equipment not reused for the new systems. Limited demolition of the existing supply and return ductwork will also be required to support the modifications outlined in the section below.

Modification:

As part of this proposal, three existing systems will need to be modified.

These include:

1. Central AHU system

2. Central Cooling System

3. Central Heating system

4. HVAC Controls System

The central AHU system, comprised of AHU-1 & 2, will be replaced with new DOAS systems.

These systems will provide enough outside air to meet the ventilation requirements. To account for this and the new overhead ductwork for the fan coil units, some of the existing supply and return ductwork for these areas will need to be modified and/or removed. Finally, the ventilation airflow for each unit will need to be revised as needed to provide the required outdoor air to each of the spaces based on room occupancy and new airflow distribution values.

The second of the existing systems to be modified is the central cooling system. To accommodate the new air-cooled chiller capacity, the existing system piping, components, and distribution system will be modified and added to as required to serve the new fan coil units. All valves, pipe sizes and expansion tank sizing will be reviewed against the final design parameters to ensure compatibility with the new system. The existing chilled water pump will be removed and piping configuration will be revised to allow for the incorporation of the new chilled water pumps identified in the previous section.

In addition to the cooling system, modifications will be required for the heating system to address the heating loads identified. The existing pump will be removed and piping configuration will be revised to allow for the incorporation of two new heating hot water pumps in order to create redundancy in pumping capabilities. A new fire tube vertical noncondensing boiler shall be provided with the existing supply and return fuel piping to be reconnected to the new boiler burner unit.

The final system to be modified is the existing LonWorks HVAC controls system. The new cooling equipment and DOAS units will need to be added, the existing AHUs removed, chilled and heating hot water system sequences adapted to account for the system modifications listed above. The outside air setpoints should be revised to add two setpoints, one for normal & one for exercise conditions to allow for more efficient system operation under normal occupancy. In addition to this, the sequences for all systems should be reviewed & modified as required to ensure the new and existing heating and cooling equipment operation is coordinated properly and operates efficiently under the normal reduced occupancy.

ELECTRICAL

General Overview:

Updates to the electrical system will be required to support the proposed changes to the HVAC system, discussed in the mechanical section of this report.

Existing Electrical System:

The electrical system has been modified from the date of original construction in 2007, however the main service size and engine-generator set rating have not been previously changed in response to the loads added since 2007.

Based on the available data, an estimated maximum demand (EMD) has been determined to be 305 kVA for the service to Building 1115.

Building 1115 is provided with a 300 kVA step down transformer that has a 22.9 kV delta primary and a 208Y/120 volt, three phase, four wire, 60 Hz secondary. Per the as-built drawings, the service lateral consists of three sets of

(4) 300 kcmil conductors, rated up to 684 amps when the neutral is considered a current carrying conductor. It is possible that the original design did not account for this derating factor per NEC Article 310.15(B)(3)(a).

An enclosed circuit breaker is provided in a dedicated enclosure in the main electrical room for the service entrance, rated 800 amps. This is the location of the service disconnect and the neutral ground bonding link. A second enclosed circuit breaker is provided in the main electrical room for the generator output conductors, also rated 800 amps.

An 800-amp automatic transfer switch (ATS) is provided downstream of the two enclosed circuit breakers to start the engine-generator set and select the best available source in the event of a commercial power interruption. The ATS is a four pole, bypass isolation type. The engine generator is a separately derived system.

The engine-generator set is provided to back up 100% of the building load in case of commercial power failure. The generator is rated 300 kW at 0.8 power factor, with a 208Y/120 volt, three phase, four wire, 60 Hz output. The engine-generator set is located outside the building, in a weatherproof enclosure. The generator circuit breaker setting may not be correct, as the long-time pickup appears to be set at 600 amps. The generator operates on diesel fuel, and an adjacent bulk storage tank includes capacity for 9,463 L of fuel that can be used by the engine-generator or the boiler. If the fuel tank is full and boiler not operating on diesel, the engine-generator set can run for approximately 100 hours at full load before re-fueling of the bulk storage tank is necessary.

The main distribution panelboard is rated 800 amps, 208Y/120 volts, three phase, four wire, 60 Hz, 22,000 AIC. The panel consists of two adjacent panelboard enclosures. The panelboard includes an 800-amp frame/800-amp trip main molded case circuit breaker. There are two (3)-pole spare circuit breakers (GE TEY type) and one (3)-pole space that could be fitted with a new circuit breaker (GE TEY-type compatible, likely rated no higher than 125 amps).

There is no available physical space to add new, larger circuit breakers to the existing MDP.

Ten branch circuit panels are fed in radial fashion from panel MDP. One of these panels (CP) is downstream of a 72 kW UPS. The UPS size and the associated feeders and overcurrent protection devices have been increased in rating over the life of the building as the server room loads have increased.

Three additional branch circuit panels are downstream of a distribution panel and a step-up transformer with a 208-volt delta primary and a 380Y/220 volt, three phase, four wire secondary.

This small power system is used for Korean electronic A/V equipment that operates on single phase, 220-volt circuits.

Major HVAC equipment is also fed directly from molded case circuit breakers installed in panelboard MDP. This equipment includes original AHU-1, AHU-2, and the original chiller.

Since the date of original construction, additional loads have been added to panel MDP and possibly downstream panels for direct expansion (DX) HVAC units. The added load is approximately 179 cooling kW, or approximately 100 electrical kVA.

Recorded demand loads for the building have not been provided, so an estimated maximum demand of 305 kVA for the building service has been calculated based on the available data provided by the Government and the site survey.

A recording meter was installed on the building main service from 29 September 2022 thru 31 October 2022, reading a peak demand of 101.16 kVA. The EMD was computed using minimum NEC demands for receptacle loads, the actual lighting load, best assumptions of the HVAC load, and an approximation of the server room load.

All calculations are based on the as-built drawings received from the Government.

The below table is a summary of the preliminary calculations of the EMD, with connected loads for each panelboard summed and multiplied by a demand factor to create a connected load and an EMD:

The EMD of 305 kVA is equivalent to 847 amps at 208 volts, three phase. When the future growth of 15% required by UFC 3-520-01 and an 80% rated main circuit breaker are considered, the sizing ampacity for the building service is 1,218 amps. Therefore, at least a 1,200-amp service should be provided for the current EMD load of the building, before any changes are made to the HVAC system, based on the available data. Increasing the service size to support the EMD would be a costly endeavor involving significant expense, downtime, and removal of components that have not yet used up their useful life.

Recommendations:

The mechanical section of this report recommends replacing the cooling capacity of the multiple DX units (approximately 179 kW cooling load) with 246 kW of cooling load in two new chillers, and the addition of HAVC equipment in the building for air distribution. This will increase the electrical demand load on the building by approximately 60 kVA. Since the EMD for the building exceeds the existing service size before additional load is added for the new chillers and fan coils, major electrical work will be required to support the increased HVAC load.

To support the new HVAC load, a new 1,200-amp (100% rated) service at 208Y/120 volts, three phase, four wire, 60 Hz is recommended. To increase the service size, replacement of the pad mounted transformer, engine-generator set, service laterals, ATS, indoor enclosed circuit breakers, main distribution panel (MDP) and limited branch panelboard feeders will be required. The enlarged ATS and MDP will not both be able to fit inside the existing main electrical room, as all available space is already in use. The space constraints in the main electrical room are also likely to require significant downtime for this electrical work, as the existing equipment will need to be demolished prior to the new equipment being installed. Phasing will be required, and temporary engine-generators will be required to keep limited portions of the building operational. The exterior duct bank will need to be excavated to allow access to the existing duct bank for demolition and so a new duct banks can be added for the increased load on both the main service and engine generator power feeds. The new service will require ground fault protection, and panic hardware for egress on the door to the main electrical room. An additional branch panel will also be required to support the new branch circuits for the HVAC equipment.

Space in the existing electrical room is limited, and further reduced by a step-up transformer installed on the floor, near the center of the room that impedes equipment clearances. To install the required equipment in the room while maintaining clearances, the new main panelboard is proposed to be a distribution panel type with main lugs only to save on space. No metering, current transformers, or service entrance facilities will be included in this main panel, as these other items will be located outside in weatherproof enclosures. The size for the basis of design panelboard is shown on the cut sheets in the appendices and included on the drawings at actual size. This panelboard construction allows the new unit to fit in the existing electrical room. To allow the equipment to fit inside, the spare capacity for future growth is below 15% based on the demand load calculated on the Drawings, but in reality the building’s demand load has been measured to be far lower than calculated.

A new main switch has been shown on the building exterior, just outside the main electrical room, to meet NEC requirements for disconnecting outside feeders at the point that they enter the building. The new feeder from the ATS will be routed underground, turning up into the main switch on the exterior wall. The feeder can run along the walls of the existing main electrical room to connect to the new main panelboard location. The new main switch will be circuit breaker type, with ground fault protection and arc flash reduction maintenance switch.

As a part of this upgrade work for HVAC system support, general branch circuits for lighting and power at the building will not be impacted. The existing lighting fixtures will remain in place and basis where possible, with removal and re-installation in areas where ceilings are removed for HVAC access. Branch circuit conduit and wiring will remain. The only changes to branch circuits will be for HVAC equipment that is removed or provided new as a part of this project.

As a basis for a preliminary cost estimate for this work, the following points are a possible path forward to consider:

1. Upgrade the existing 300 kVA transformer for the building to a 500 kVA transformer. Upgrade the metering with new current transformers and devices as required. Connect to Camp Mujuk smart metering UMCS.

2. The engine-generator size for this service and block load is 500 kW. Provide a new diesel engine-generator set within a weatherproof enclosure, rated 208Y/120 volts, three phase, four wire, 60 Hz. The fenced equipment yard area will need to be enlarged to support the required footprint and clearances for the new transformer and engine-generator set.

3. Replace existing three-way underground duct banks with five-way concrete-encased duct banks, each containing

(4) 500 kcmil conductors.

4. Provide service-entrance rated four pole exterior bypass-isolation ATS in a NEMA 4X enclosure and locate near the transformer and generator yard. This will free up space in the main electrical room at the expense of maintainability of the ATS.

5. Provide a new five-way concrete-encased duct bank with 4#500 kcmil conductors in each duct from the new exterior ATS location to the new exterior main switch located on the outside wall of the electrical room. Main switch shall be a 1,200-amp main circuit breaker with electronic trip unit for LSIG functions and an arc flash reduction switch for maintenance.

6. Provide a new main distribution panel (MDP) inside the main electrical room. The new panel shall be rated 1,200 amps, 208Y/120 volts, three phase, four wire, 60 Hz, 65 kAIC, with main lugs only.

7. Provide new branch circuit breakers for the new MDP, with circuit breakers rated over 190 amps including electronic trip units for LSI functions.

8. Connect existing branch panel feeders to the new MDP. Do not splice the existing feeders but pull new conductors where the existing conductors are not long enough to reach the new breaker lugs.

9. Provide a new 24 pole branch circuit panelboard M2, rated 100 amps, 208Y/120 volts, three phase, four wire, 60 Hz, 22 kAIC and a feeder of 4#1 and 1#8 ground conductors. This panel shall be located in the mechanical room and provide new branch circuits for new fan coil units.

10. Provide new branch circuits for the two added chillers, and the added HVAC units in the building. Re-use existing VAV circuits in the area for the new HVAC systems. An existing and a new one-line diagram for the facility are included in the Drawings. The existing conditions are based on the best-known data about the current system and multiple site surveys, as changes have been made to the electrical system after the as-built drawings were issued.

TELECOMMUNICATIONS

General

The scope of work of Mujuk B1115 will include all telecommunications engineering, design, and support services necessary in preparation of the building expansion design documents. The scope of work provided is in accordance with the A-E Statement of Work Task Order.

Communications Service

New j-hooks and conduit will be installed from existing telecommunications room to support all Cat. 6 cabling and other telecommunications low voltage cabling for building expansion.

Telecommunication pathways shall not exceed 40% fill, and telecommunication subcontractor shall provide additional pathways as needed to prevent over fill. Fill calculations shall be included in the telecommunication shop drawings.

Backbone Communications Systems

The existing copper backbone cabling system shall remain in place.

Horizontal Communications Systems

The horizontal cabling system shall consist of Category 6 unshielded twisted pair (UTP) cabling for voice and data communications. The data network shall be a single unclassified local area network (LAN). Cabling shall terminate on 48-port patch panels in the existing telecommunications Room (TR). New 48-port patch panels will be provided as required to terminate new work area outlets (WAO).

Provide new data outlets for mechanical panels as required.

Cabling for individual systems shall be bundled separately.

Telecom Room

Existing Telecommunications Room shall remain in place. No single data cable run shall exceed 295 feet (90 meters). The TR houses edge switches for the data network, and patch panels for voice and data cabling. Provide additional patch panels and connector blocks as required to support new work.

Communications Grounding

A Telecommunications Ground Bus Bar (TGB) exists in the existing TR. All telecommunications equipment will be grounded to the telecommunications grounding system, which include but not limited to cabinets, cable tray, patch panels, active equipment, etc.

Security Systems

No video surveillance cameras are required inside or outside of the building.

Audio Video Systems

No Audio or Visual upgrade is required with the building.

CYBERSECURITY

Design Scope

The cybersecurity scope for this project will ensure the appropriate levels of Confidentiality, Integrity, and Availability (CIA) for the project’s Facility-Related Control Systems (FRCS) are included in the design.

Confidentiality: Prevent the disclosure of data or information to unauthorized entities.

Integrity: Ensures that data is protected from unauthorized modification or data corruption.

Availability: Ensuring that data is accessible when and where it is needed.

The process to define requirements and achieve the desired cybersecurity goals begin with design and is validated by established government security criteria. Integrating cybersecurity into the design phases of the project allows for an efficient and effective application of security criteria. This approach requires cooperation and collaboration with the designers, builders, manufacturers, system owners, and government stakeholders in order to efficiently navigate the Risk Management Framework process on the path for an Authority to Operate (ATO).

Government defined security criteria are correlated to the assessed impact, mission requirements, and other design constraints in order to tailor a selection of cybersecurity controls – Control Correlation Identifiers (CCIs) – necessary to achieve an acceptable level of risk to the mission. These controls are provided for each system grouping and are cooperatively filtered based on the project stage, target system type and environment, system and client capabilities/resources, etc. Filtered CCI exceptions are always documented.

This performance of this work includes the installation of associated FRCS:

The planned architecture for these systems is presented as an appendix to the design analysis as:

“Cybersecurity 5-Layer Diagram” and explained in the sections below. FRCS, planned interconnections, and major system components including head-end control systems are presented in the UFC 4-010-06 5-Layer Architecture format alongside other systems and existing network architecture for reference.

For all FRCS, the installation/system owner is presumed to require an authority to operate (ATO) for and authorization by an authorizing official, formally referred to as the designated approving authority (DAA), assigned by the government. The DAA will make the final accreditation decision as the official with the authority to formally assume responsibility for operating the systems at acceptable levels of risk.

Provide a cybersecurity design analysis for this project, which should include all equipment and systems (platforms) with cybersecurity requirements; identify the components of the listed systems; identify the interconnection points for the listed systems with other facility networks or systems; provide notional diagrams depicting the components that make up each facility-related control system, the communication media and protocols used to communicate between components, and the ‘level’ at which the components reside, based on the 5-Level Control System Architecture in UFC 4-010-06; provide fully tailored lists of cybersecurity controls and control correlation identifiers (CCIs) for each facility-related control system; and for the CCIs identify the party responsible for executing the requirement (Government, designer, or constructor).

General Cybersecurity Design

All FRCS are subject to cybersecurity requirements. Refer to the Cybersecurity Appendix for a comprehensive listing of the mandatory requirements (CCIs) for all products and systems. Where a proposed product or system cannot meet a requirement, the contractor shall clearly identify as such in the submittal and provide written justification. The Cybersecurity CCI Control List and Cyber Security Controls for this project will be provided as an appendix to the Design Analysis.

The UFGS spec document submittals will reflect the CCI list requirements.

All systems will be configured to the most practical and secure configuration IAW with all applicable Security Technical Implementation Guides (STIG) for the equipment provided. All systems are specified in accordance with the requirements of UFC 4-010-06 “Cybersecurity of Facility-Related Control Systems.”

System design will avoid dependence on networks for the execution of system control. Where dependence on a network is unavoidable, the system will be isolated to the extent that a higher-level network outage does not affect the local system network.

Where a user interface is required for the functioning of a system control, physically co-locate the local interface or provide a dedicated front-end interface with the equipment.

FRCS shall have only the minimal functionality necessary to execute the mission. Devices with wired, wireless or web-interfaces that are not needed for operation shall have all such interfaces disabled. All device accounts, logins, or passwords for the device, including default and manufacturer pre-set, that are not needed for system operation are to be deleted or disabled. All accounts, logins, or passwords used in system operation must be provided to the Government.

FRCS will be designed for Graceful Failure and Degraded System Operation. FRCS shall be implemented in such a fashion that both failure of equipment and cybersecurity attack will not result in overall catastrophic system failure.

FRCS shall fail into a safe and stable operating condition and continue with intentionally degraded operation until the control system can be restored to full functionality. Risk from operating in the degraded state(s) shall be manageable and less than what is allowed by the mission requirements.

FRCS are designed as special purpose, isolated, systems and must not be used as general computing resources.

FRCS shall not share resources with other systems.

FRCS shall not provide, or share resources with, other applications that provide standard IT services…