Attachment_4_Questions_ _Answers_(Initial_Round).pdf

QUESTION & ANSWERS (INITIAL ROUND):

SB1341-14-RP-0017

1. QUESTION: Specification section 011000-3 / 1.5 / 9. / E. states “All testing shall be completed prior to the line being pressurized that would necessitate a second outage.” Please specify as to what “testing” shall be completed.

ANSWER: Division 011000 is summary of work. Section 1.5 is listed as Phased Construction.

The intent of this section is to specify to the contractor that contractor is required to have each specified meter communicate to frontend PC per the contract documents. Each component and/or system has required testing listed in respective specification division. All installed equipment shall be tested according manufacturer recommendation prior to start-up per Division 017300, 3.10 “Starting and Adjusting”. Prior to start-up testing shall include but not limited to checking flow direction, wiring and interconnection of wiring, meter is properly powered, and display reading should be active.

Piping leak testing shall also be included apart of testing after thermo-wells or flanged type flow meters are installed. The Contractor shall leak test the entire system per specification section 232213/3.5 Steam Piping, 232113/3.5 Hydronic Piping and 231123/3.11 Natural Gas Piping.

NIST will not grant a second outage.

2. QUESTION: Specification section 232113-6 / 3.5 / A. / 3. States “Flush hydronic piping systems with clean water, then remove and clean or replace strainer screens.” Please clarify specifically as to which strainers in the system will need to be cleaned or have screens replaced and the extent of flushing the system.

ANSWER: This section applies to buildings where flanged meters are installed; the removal and cleaning of strainer screen down stream of installed meter is required. Offeror shall prepare their offer accordingly to account for this. Refer to building drawings for flanged meter installations.

Building 235 will require relocating or rework of existing system for installation of meters. New piping will be required to be installed and will constitute flushing hydronic piping and clean or replacing strainer screens at the Fan Coil unit. Please refer to sheet 235-854 for additional information.

Where thermo-wells or flanged type flow meters are installed, the entire system will require flushing and cleaning per specification section 232213/3.5 Steam Piping, 232113/3.5 Hydronic Piping and 231123/3.11 Natural Gas Piping.

3. QUESTION: Specification section 232213-1 / 1.4 / A. describes the LP Steam Piping and HP

Steam Piping pressures but does not describe the temperatures. This information is necessary in order to determine the insulation wall thickness called out in the Insulation Specification section. Please provide temperatures of these piping systems.

ANSWER: Low Pressure Steam piping 0-15 psi - (212°F-250°F). Medium Pressure Steam piping 16-100 psi - (251°F-338°F). High Pressure Steam piping 100 psi plus - 339°F and above.

4. QUESTION: Insulation Note #9 on all the building drawings states “Chilled Water, High Pressure Steam and Steam Condensate Return shall be insulated with a minimum of 1 ½” thick wall with foil faced fiber glass wraped, canvas, painted white.” Specification section 230700 / 3.11 gives a different size wall thickness for each system. What is the required insulation wall thickness for each system?

ANSWER: The referenced drawing note willl be modified to read, “Chilled Water, High Pressure Steam, and Steam Condensate Return shall be insulated per specification section 230700 HVAC Insulation; see paragraph 3.11 for indoor piping insulation schedule.” The specified material is listed in part 2 of 230700.

5. QUESTION: Will NIST or the contractor be responsible for the shut-down and draining of the piping systems?

ANSWER: Contractor in coordination with COR will schedule shut down. Shut down and draining of piping shall be performed by NIST once approved and scheduled by COR. For Details of Phased Construction refer to revised Division 011000.

6. QUESTION: Throughout the drawings there are some contradictions between the Flow Meter Tables/Schedules and the Mechanical New Work Note Plans as it pertains to the types of flow meters to be installed. Just one example is bldg. 224 Table/Schedule on the Chilled Water Return Pipe calls for a 10” GE DF868 Ultrasonic flow meter and the Mechanical New Work Note Plans calls for a 10” ABB Swirl Flow Meter. Please clarify as to which information supersedes throughout the drawings.

ANSWER: Revised drawings are attached to resolve these discrepancies

7. QUESTION: What is the purpose of the hot tapping if the contractor is allowed to have shut downs of the systems?

ANSWER: Contractor can perform hot tapping on chilled water piping without having shut down therefore hot tapping is included in scope. This does not apply to steam as well as condensate piping where a scheduled shut down is required.

8. QUESTION: If hot tapping is necessary, would it be acceptable to install threadolets versus the detailed full encirclement fittings?

ANSWER: Both are acceptable.

9. QUESTION: If hot tapping is necessary, how will the temperature sensors be inserted into the pipe while the installed isolation valves are shut? The temperature sensors will have to extend quite significantly into the pipe according to the manufacturer.

ANSWER: Thermowells and meters may be installed in a hot tap without a system shut-down using the installation tools available from International Flow Technologies, Inc. Similar tools by any other manufacturer are also acceptable as the contractor is responsible for their own tools.

10. QUESTION: In the solicitation 1442 form line 11 states complete within 180 days after receiving NTP but, the pricing schedule states that the total period of performance for the contract will be 18 months from the date of award. Which time duration is correct?

ANSWER: SF 1442 line 11 is for CLIN 0001 “Base Bid Buildings” only. The period of performance (POP) for each CLIN is specified in the schedule and is independent of other CLINs. The total POP for the contract as a whole will be 18 months from date of award.

11. QUESTION: If the contractor is expected to have the work completed within 180 days after NTP and no more than 5 buildings, in a given weekend per steam and condensate outage every 90 days, how will the contractor complete more than 10 buildings in the allotted 180 days?

Example: If the CLIN’s 0001 to 0023 are awarded in 2014, would all 26 buildings need to be completed within 180 days after NTP?

ANSWER: Refer to the Answer to Question 10.

12. QUESTION: There is only a drawing cover sheet for buildings 206 and 303. Building 303 is part of the base bid. Please clarify whether there is any work to be done in these buildings. Buildings 206 and 303 meter installation is in another building.

ANSWER: Buildings 206 and 303 are served by Buildings 236 and 301 respectively. The installation of meters for building 206 is on DWG 236-551 through 236-554. Installation of meters for building 303 is on DWG 301-342 through 301-347.

13. QUESTION: If the contractor is responsible for the monitoring of the existing to remain flow meters, please provide additional information as to model numbers, make, and interface to the existing monitoring and/or BAS system. Example: drawing 215-280 does not indicate any monitoring of the existing to remain meters.

ANSWER: Buildings 215 does not report back to the NIST BAS front end PC located in Building 301-Supply and Plant Division

Refer to BAS system architecture riser diagram on DWG 215-282.

For pricing purposes, existing meter and hardware provides an analog output. Contractor to provide a new network card, and any new hardware and software needed to connect to the new data collection system. For those meters not reporting back to the aforementioned BAS front end. Coordination of the exact meter manufacturer and model number shall be coordinated during construction.

For buildings where there is an existing meter to be monitored refer to respective building drawings BAS system architecture riser diagram.

For meters reporting back to the central plant programming to incorporate the data into the new collection and monitoring system shall be provided but no new hardware is required.

Refer to respective building drawings BAS system architecture riser diagram

14. QUESTION: The meters specified require Bacnet Ethernet. The drawings do not identify Ethernet access. They only identify the closest BAS panel. Can NIST verify the closest BAS Ethernet connection points for pricing purposes?

ANSWER: Refer to the Answer to Question 17.

15. QUESTION: It is our understanding that the NIST Water detection network is dedicated and separate from the BAS network. Is this still the case or can it be utilized for connection back to the BAS?

ANSWER: Yes, NIST Water Detection network is dedicated and separate from BAS panel.

No, Cross connection of Water Detection and BAS network is not permissible.

16. QUESTION: How far were in the common room and how to run the pipe to it?

ANSWER: Offeror question is not clear and therefore, unanswerable at this time.

17. QUESTION: What is the distance between mechanical rooms to nearest fiber optic network room to figure out run of cat 5 cable?

ANSWER: The new panels do not need to connect directly back to the fiber optic network rooms. The majority of the buildings have existing Water Detection or BAS panels in the same room as the new panels that can be used to connect to the existing NIST network. The few Buildings that do not have existing panels in the same room as new panels are listed below.

These buildings should be provided with the following allowances for cable runs & raceways to connect into the nearest network panel.

Building 235: 800’ (Estimate industrial standard allowable fittings, and JB ) Building 227: 80’ (Estimate industrial standard allowable fittings, and JB ) Building 215: 100’ (Estimate industrial standard allowable fittings, and JB ) Building 202: 10’ (Estimate industrial standard allowable fittings, and JB ) Building 231: 110’ (Estimate industrial standard allowable fittings, and JB )

Please note that this reponse is not conflicting with ANSWER # 15. ANSWER #17 involves where there is no water detection system.

18. QUESTION: Are you going to electrical gauges?

ANSWER: The question is to ambiguous but If you are asking “ …are we installing Power KWHR meter?” then the ANSWER is – NO.

19. QUESTION: Please confirm the storeroom within building 301 work hours.

ANSWER:

• Hours are Mon- Fri 7:30Am till 3:00 PM. For weekend work during outage, coordinate in advance with COR for access to the store room.

• For prep work which can be done during the work week, coordinate in advance with COR for access to the store room.

• Post installation testing - Coordinate in advance with COR for access to the store room.

• Please be advised that you need to be escorted all the time while working in the store room irrespective of the days of the week.

20. QUESTION: The DDC controls NIST specification 230900 section shows Siemens as an approved controls manufacturer on page 230900-14, 2.1 A. However, there is conflicting criteria on page 61, #3, Evaluation Factor A; which specifically prefers or names Alerton® BAS system.

ANSWER: It is not a conflicting issue. The specifications and evaluation criteria are two separate aspects of the solicitation. The perspective offeror is correct identifying that a vendor is listed in the technical specifications as a viable manufacturer. As noted in the answers to questions #13, #14, and #15 offerors are tying into an existing BAS network which is primarily Alerton. The evaluation criteria will remain as posted in the solicitation.