QA's from draft solicitation.xlsx
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- Uninterruptible Power Supply (UPS) equipment, Integrated Logistics and Technical Services
- Solicitation number
- DTFAAC-17-R-00013
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QA's from draft solicitation (xlsx)
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Sheet1
| Location | Question | Answer |
| Statement of Work | ||
| C.3.3.1.2. UPS SOFTWARE/FIRMWARE CDRL: E002 Software/Firmware Interface Documentation. | Two distinct statements about confidentiality exist within the SOW. As the FAA’s requirement is for company confidential protected data; please define “reasonable secure manner” and elaborate on why “agrees not to divulge the data to any competitors” does not maintain an FAA only need-to-know access policy? | The informaiton will be stored on the contractor's website where Government employees with a need to know can request access |
| C.3.3.1.3. UPS MAINTENANCE DIAGNOSTICS AND ANALYSIS SOFTWARE CDRL: E003 UPS Maintenance Diagnostic and Analysis Software. | ||
| C.3.5.4.1 SPARES STORAGE WAREHOUSE | Will distrobution centers be acceptable to the FAA or is it expected that a separate FAA only warehouse be established for in service spares? | One warehouse and have a space desingated for FAA only material (caged off) |
| The Buy American Act applies and the references may be found in Section I, Acquisition Management System (AMS) clauses 3.6.4-2, 3.6.4-3 and 3.6.4-15. | Would the FAA accept US-made end products, as defined in Part 52.225-5 of the FAR? | AMS 3.6.4-5 is applicable. IAW AMS T3.6.4 A 4. |
| Uninterruptible Power Supply Equipment Specification (UES) PART III – SECTION J, ATTACHMENT J.1 | ||
| 2.14.2.1.1 UPS module dimensions, for all input and output voltages; 2.14.2.1.2 UPS VRLA Battery rack or cabinet dimensions; 2.14.2.1.3 Manual Maintenance Bypass cabinet, floor mount; 2.14.2.1.4 Manual Maintenance Bypass cabinet, wall mount. | The Specification implies that all UPS, Battery and Bypass cabinets not exceed a depth of 32”. | SOW has been revised to reflect a max of 40". Please keep in mind, some shelters are 8', so the UPS must maintain a depth that would allow 36" for clearance per OSHA and NEC code. |
| Section J, Attachment J.1a Supervisory Control and Data Acquisitions (SCADA) Specification | ||
| This is an Uninterruptible Power Supply (UPS) monitor and control system. This section includes the supply and installation of a complete UPS SCADA System as described in the specification. | How many UPS modules will the SCADA monitor? Is the SCADA to be dedicated to UPS only, and not include the rest of the electrical distribution system? | 4 modules for ACEPS II Phase I. SCADA is dedicated to UPS system only, however, in ACEPS II we also interface each UPS with the PCMS via Modbus/TCP IP to pull data into the PCMS SCADA. Communication to the UPS SCADA and the PCMS SCADA are independent of one another. |
| 2.1.1.1 Work Station; One (1) VDT 19-inch; One (1) Processor | Is it true that this is a web-based system; however only one view node is specified | The current ACEPS II UPS SCADA operates two nodes (each node being a touch screen PC) to a common PLC for a UPS system. We have two of these systems in ACEPS II Phase I. One for the A-Side and one for the B-Side. |
| 2.2 SCADA SYSTEM OVERVIEW The Supervisory Control and Data Acquisition (SCADA) system shall be a web-based UPS monitoring and control system that monitors and allows control of the UPS without any further configuration or setup required after installation. The SCADA is defined to include, but not to be limited to, remote devices for monitoring and control, protection, UPS communication interface hardware, intercommunication wiring, work station, software, software configuration, ancillary equipment, startup and training services. | Comment: Would like additional definition of ‘UPS control’. Is the control to be done by opening/closing the SCC switchgear breakers? Is the control to be done by writing registers to the UPS module? | Currently we have the following control capabilities: 1. Control of individual UPMS (UPM on/off); 2. Control of UPS system to include: UPS Start UP, UPS go online (inverter start), Go to Bypass, Shutdown (stop inverter). The UPS responds to the commands by opening the Inverter output contactor as needed and powering on the internal static switch as needed. There are other actions integral to UPS operation that occur in conjunction with starting or stopping an inverter or firing a static switch. Each UPS manufacturer may have different methods in doing this and I expect this is proprietary to each manufacturer. |
| 2.2.1 Time Standard; Accurate time standard shall be implemented as part of the SCADA for proper sequence of operations and events. PC based timing system for maintaining a 1 second resolution throughout the data center. The software will show and log event, alarm, and control command times out to 1-second in the sequence in which they occurred. | Does ‘throughout the data center’ mean the entire electrical distribution system, not just the UPS modules?- 1 second resolution is achievable if the SCADA monitors the UPS modules only. If the SCADA monitors the entire distribution system, then 2-5 seconds is achievable, IF the system is properly designed. | UPS system only. The remaining components of the power system are managed by the PCMS. |
| 2.3 SCADA VDT WORKSTATION REQUIREMENTS The project shall include one VDT workstation with the following features: |
a. Internal to the 19-inch VDT
| b. Option to mount workstation and VD | b. Would like to know how/where the VDT will be mounted. On a wall? In the UPS switchgear? | We currently order two types of VDT. One is mounted in a stand alone enclosure that is floor mounted. The other is mounted in metal panel in our PCMS cabinet. | |
| 2.4.1 Screen Parameters; The SCADA screens shall show all parameters which are available from the remote UPS/device, including but not limited to all metered values, load status, alarm status, energy data, etc. In addition, the screens shall be capable of providing command to the UPS. | Would like to know exactly what UPS commands are required. The UPS vendor must verify that the UPS can accept register-based commands from the SCADA. | Currently we have the following control capabilities: 1. Control of individual UPMS (UPM on/off); 2. Control of UPS system to include: UPS Start UP, UPS go online (inverter start), Go to Bypass, Shutdown (stop inverter). The UPS responds to the commands by opening the Inverter output contactor as needed and powering on the internal static switch as needed. There are other actions integral to UPS operation that occur in conjunction with starting or stopping an inverter or firing a static switch. Each UPS manufacturer may have different methods in doing this and I expect this is proprietary to each manufacturer.Currently, UPS remote control is achieved via PLC output hardwired to a UPS remote input. When the PLC sends the signal, the UPS responds accordingly. I'm not sure how this is achieved within the UPS by I expect that it is changing the value of a ModBus register based upon a point going high. | |
| 2.4.2.1 Metered Values | Our SCADA software can read all this data from the UPS, if the data exists in Modbus registers or SNMP | All metering ans UPS status information is available via Modbus. The FAA has the register list having downloaded it from previous UPS installations. | |
| 2.4.2.2 Power Flow Indications | The above indicates that the screen is to show status of the SCC switchgear breakers. - If one-line color indication of ‘type’ of power flow (via utility, battery, or generator) is required, the current SCADA software can do this. If multiple UPS modules shall be monitored, it is assumed that each UPS module would be represented by a separate screen on the VDT. | Comments are correct |
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