S02 SOW 523-23-006 RCx Repairs JP.docx
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- B543--523-23-006 RCx Repairs JP Federal contract opportunity
- Solicitation number
- 36C24123B0007
About this file
This statement of work outlines repairs and upgrades to be completed at the Jamaica Plain VA Medical Center in Boston, Massachusetts as part of retro-commissioning efforts. The scope of work includes equipment repairs and replacements, control system upgrades, and schedule and sequence of operation modifications for numerous air handling units and other HVAC equipment identified in an issues log. All work must be performed within 180 calendar days of notice to proceed. The goal is to improve energy efficiency through correcting existing equipment and systems. The related federal contract opportunity is solicitation number 36C24123B0007 for project B543--523-23-006 RCx Repairs JP through the Department of Veterans Affairs Veterans Health Administration VISN 1.
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Other files for this federal contract opportunity
| File | Type | Posted |
|---|---|---|
| S06 - Bid Opening Conference Line 36C24123B0007.docx | DOCX document | |
| S06 - Site Visit Sign In Sheet JP RCx Repairs.pdf | ||
| S05 - RFI Questions and Answers 523-23-006 RCx Repairs JP.docx | DOCX document | |
| 36C24123B0007 0002.docx | DOCX document | |
| 36C24123B0007 0001.docx | DOCX document | |
| S02 523-23-006 VISN 1 RCx Repairs JP MIL.xlsx | XLSX spreadsheet | |
| S02 Safety Requirements.pdf | ||
| S02 WD MA20230001 16JUNE2023.pdf | ||
| S02 General Requirements.pdf | ||
| 36C24123B0007_1.docx | DOCX document | |
| S02 Shop Drawings Product Data Samples.pdf |
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Text version
STATEMENT OF WORK
VISN 1 RETRO-COMMISSIONING (RCx) REPAIRS AT JAMAICA PLAIN
PROJECT #523-23-006
This project will implement recommendations identified by previously completed retro-commissioning (RCx) activities as included as individual item repairs from a RCx Master Issues Log (MIL). This project will include equipment repairs, equipment replacement, and upgrading/optimizing American Energy Management (AEM) controls. All work will be done at the Jamaica Plain VA Medical Center in Boston, Massachusetts. In general, work shall include all labor, material, equipment, and supervision to perform the required mechanical, electrical, and programmatic work discussed below.
All employees of general contractor and subcontractors shall comply with VA security management program and obtain permission of the VA police, be identified by project and employer, and restricted from unauthorized access.
The Period of Performance for this project is 180 calendar days from the Notice to Proceed.
The goal of this work is to make corrections to existing equipment and systems to improve energy efficiency. All issues within the scope of work are shown below as they were represented in the MIL.
MIL
Issue No.
Survey Date Equipment Name Equipment Building Location;
Room, Roof, or Wing;
and Area Served
| Issue Description |
| Issue Resolution |
| 76 |
| 1/14/2021 |
| AHU-5C-14-2 |
| 1 - Main Hospital |
C5-14 5th Floor Wing C-Wing
| Trend data indicates supply air temperatures consistently rise above 160 deg F during unoccupied hours. (Priority: 3 - Energy Conservation) |
| Heating should not be provided at all during unoccupied hours. Upgrade the schedule and sequence of operation to remove heating during unoccupied periods. Replace the supply air temperature sensor if damaged or unreliable. |
| 79 |
| 1/14/2021 |
| AHU-5C-35 |
| 1 - Main Hospital |
C5-35 SPD - Dirty
| This unit's supply and exhaust fans have variable frequency drives (VFDs), but both were found to be set in HAND mode locally. The exhaust fan was running at 100% while the supply fan was only running around 55%. (Priority: 3 - Energy Conservation) |
| Release the VFDs from HAND control. Upgrade the sequence of operation to allow for automatic controls. Coordinate with AHU-1 SPD and AHU-3 (located in the sub-basement) to satisfy SPD requirements. |
| 82 |
| 11/2/2020 |
| AHU-6B-75 |
| 1 - Main Hospital |
6B-54 B6-54 Suite
| The unit is approaching the end of its useful life. Ductwork insulation has been torn off and the floor is rusted, suggesting potential leaks from the coil. Pneumatics are still used to operate dampers. (Priority: 3 - Energy Conservation) |
| Replace the unit and ductwork and provide upgraded BAS graphics. |
| 87 |
| 1/14/2021 |
| AHU-9B-74 |
| 1 - Main Hospital |
B9-74 9th Floor B-Wing
| The unit does not turn off when in unoccupied mode. According to the sequence of operation the unit should turn off when unoccupied. (Priority: 3 - Energy Conservation) |
| Update the sequence of operation to match the schedule. |
| 101 |
| 1/15/2021 |
| AHU-11B-65 |
| 1 - Main Hospital |
B11-65 B11-48 Suite
| No pressure or airflow setting for supply fan. SF set by VFD percent set point. |
| Upgrade BAS Controls and Setpoint. SF should modulate to meet discharge pressure setpoint. |
| 126 |
| 1/15/2021 |
| S-09 |
| 1 - Main Hospital |
15th Floor 14th Floor B-Wing
| The economizer damper could not be visually inspected but is likely stuck at the minimum position. Measured outside airflow nearly matches discharge airflow. (Priority: 3 - Energy Conservation) |
| Replace the economizer damper. Re-commission after installation to confirm all sequences are operating as intended. |
| 131 |
| 1/11/2021 |
| AHU-1E |
Prosthetics 1 - Main Hospital Mech Room EB-95 Prosthetics
| The chilled water valve is always open at least 50% unless commanded to CLOSE. The discharge air temperature setpoint is 65 deg F, but typically hovers around 58-60 deg F. When the outside air damper is commanded to CLOSE (outside air temperature is below 40 deg F), the chilled water valve also closes. The VAV reheats maintain room temperature setpoint. (Priority: 3 - Energy Conservation) |
| Increase the unit's discharge air temperature setpoint OR adjust the sequence of operation so the chilled water valve is not linked directly to the outside air damper operation. |
| 132 |
| 1/18/2021 |
| AHU-BD-101B |
| 1 - Main Hospital |
BD-101B (Above Ceiling) Basement PET Scan (Wing D)
| The lobby area was confirmed in a staff interview to always be cold, but the rooms with dedicated reheats are at least 10 deg F above the setpoint even when 0% OPEN. The system is small, so cooling outside air before reheating discharge air is not efficient. This is a simultaneous heating and cooling issue. (Priority: 3 - Energy Conservation) |
| Replace fan coil units with a small air handling unit (with heating and cooling capabilities) OR adjust the sequence of operation to prevent simultaneous cooling and reheating. |
| 145 |
| 11/2/2020 |
| AHU-3 SPD |
| 1 - Main Hospital |
Sub-Basement SPD (2nd Floor D-Wing)
| The exhaust fan is sized to pull more air (11,000 CFM) than the supply fans (4,000 CFM). The supply fans were noted as running at 100% on the BAS but could not meet the 4,000 CFM setpoint. In the field, the supply fan VFD is only running at 50%. (Priority: 3 - Energy Conservation) |
| Upgrade the sequence of operation and points to show the VFD correctly. Re-balance the system and coordinate with AHU-1 SPD and AHU-5C-35 to satisfy SPD requirements. |
| 153 |
| 1/15/2021 |
| ACU-1 |
| 7 - Brain Storage |
Roof Building 7
| The supply fan isolation dampers do not close when one of the fan wall's supply fans shuts down. This causes the system to short circuit. (Priority: 3 - Energy Conservation) |
| Upgrade the sequence of operation. Isolation dampers should close when a fan shuts down. |
| 179 |
| 1/18/2021 |
| AHU-Radiation Therapy |
| 1D – Radiation Therapy |
2nd Floor Penthouse Offices
| System is running 24-7, even when space is not occupied. |
| Implement Nighttime setback |
| 185 |
| 1/18/2021 |
| AC-04 |
| 1A - Research |
3rd Floor Mech Room Offices + Animal rooms
| This unit is missing a control sequence for its energy recovery coil. The exhaust side of the energy recovery is not represented on the graphics. During the 2016 RCx effort, it was confirmed that energy recovery was not being used. ERCs were required for 100% outside air systems. (Priority: 3 - Energy Conservation) |
| Confirm operation requirements based on COVID-19 changes to the HVAC Design Manual. Re-implement the energy recovery sequence. |
The Contractor shall assume responsibility for all temporary measures adopted during the construction period, to maintain operation of the hospital. This shall include but not be limited to temporary heating/cooling/ventilation, coordinating with the COR to relocate personnel, and/or ensuring that adequate facilities are provided, where deemed necessary.
The Jamaica Plain VA Medical Center utilizes American Energy Management (AEM) as the building automation system vendor.
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