B08_-_RFI_Q_A_Posting_0002.pdf
PDF 82 KB Posted
- Attached to
- CA-SACRAMENTO NWR HQ RETRO-COMMISSIONING
- Solicitation number
- 140FS126Q0050
About this file
This is a Questions and Responses document for RFI 140FS126Q0050, addressing clarifications on commissioning agent qualifications, site staffing, calibration procedures, and contractor responsibilities for a retro-commissioning project.
The document clarifies four key areas relevant to contract performance. For lead commissioning agent qualifications, acceptable alternatives include: 25+ years of HVAC/BAS background; at least 5 years of hands-on maintenance/repair experience (documented); a BS/MS in Mechanical Engineering combined with at least 5 years of experience; or at least 5 years of significant commissioning experience. Regarding site conditions, no controls technician will be available onsite, though O&M staff possess login credentials for Metasys alarm configuration and trend log access. For calibration methodology, thermistors utilize non-linear lookup tables and do not require slope/intercept calibration; instead, readings must be verified to fall within acceptable error bands with offset adjustments as needed. RTDs and linear transmitters may use slope/intercept calibration where applicable, such as for heating water or outside air sensors. Finally, the contractor is required only to complete retro-commissioning checklists during necessary site visits and is explicitly not required to perform general maintenance tasks beyond those essential for contract completion.
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Other files
| File | Type | Posted |
|---|---|---|
| Sol_140FS126Q0050_Amd_0002.pdf | ||
| Sol_140FS126Q0050_Amd_0001.pdf | ||
| B08_-_140FS126Q0050_Full_Solicitation_Package.pdf | ||
| Sol_140FS126Q0050.pdf |
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Text version
140FS126Q0050 - RFI
Questions & Responses
RFI 1.Please confirm an acceptable alternative for the lead commissioning agent qualifications (experience, education, commissioning background). ANSWER:
A. 25+ years HVAC/BAS background: YES.
B. Hands-on maintenance/repair experience: DOCUMENT AT LEAST 5 YEARS OF
EXPERIENCE.
C. BS/MS in Mechanical Engineering: YES, IN ADDITION TO AT LEAST 5 YEARS
EXPERIENCE.
D. Significant commissioning experience: "SIGNIFICANT" SHALL MEAN AT LEAST 5
YEARS EXPERIENCE.
RFI 2. Will a controls technician be available onsite, and does the O&M staff have a login for Metasys configuration and trending? ANSWER:
There is no controls technician available at the project site. Staff has a log-in that allows configuration of alarms and trend logs.
RFI 3. Clarify the RFP requirement for 2-point calibration and whether slope/intercept is applicable for thermistors. ANSWER:
Thermistors use non-linear lookup tables, so slope/intercept calibration is not meaningful; verify readings fall within acceptable error band and adjust offset if needed. Rtds or linear transmitters may use slope/intercept where applicable (e.g., heating water or outside air).
RFI 4. Clarify whether the contractor is required to perform maintenance tasks in addition to retro-commissioning checklists. ANSWER:
Item 8.2 refers to necessary site visits for contract completion. It is NOT intended to require general maintenance. Retro-commissioning checklists are expected; performing maintenance tasks is NOT.
| RFI 2. Will a controls technician be available onsite, and does the O&M staff have a login for Metasys configuration and trending? ANSWER: |
| RFI 3. Clarify the RFP requirement for 2-point calibration and whether slope/intercept is applicable for thermistors. ANSWER: |
| RFI 4. Clarify whether the contractor is required to perform maintenance tasks in addition to retro-commissioning checklists. ANSWER: |
File details come from the government source that posted it. Updated .