Copy of falcon_flowmeters_questions_answers_technical.pdf

QUESTION DATE PAGE SECTION SUBJECT QUESTION RESPONSES

1 3/4/2024 6 3.1 B INSIDE DIAMETER for all three Penstock (11’ 6” or 13”) and two Hollow Jet lines (72”). Found in drawings but needs confirmation>

Please confirm the inside diameter 11'6" diameter according to P6 Penstock drawing provided for reference

2 3/4/2024 WALL THICKNESS for each of the five lines Please confirm the wall thcikness Thickness approx. 5/8 inches according to the last time packing between pipes was replaced.

3 3/4/2024 COATING presence in any of the five lines Please confirm the nature of any coating Epoxy/Paint coating outside the Penstock and Holow Jets Pipes

4 3/4/2024 FLOW RATES – Maximum, Normal, Minimum flow rates for each line.

Please confirm flow rates Minimum= 0 Cubic Meter per Second (CMS) Mximum= 40 Cubic Meter per Second (CMS)

5 3/4/2024 1 1.4 A.2

The Contractor Shall Install/Calibrate fourth (4) New Set of Water Flow Sensors on Hollow Jet valves Pipes, Install/Calibrate Nine (9) New Set of Water Flow Sensors on Generators Penstock Pipes.

This suggests there are 13 sensors. We believe there are 5 sets of flow meters, (2 for Hollow Jet, 3 for Penstock), each consisting of 4 sensing elements (2 pairs of transmit/receive elements). Please confirm the number

Current are 2 sets of sensor for each penstock, but we require to add another set for each penstock. For the Hollow Jets are only one set and we require to add another set for each hollow jet. A total of of 13 new set of sensors for this project.

6 3/4/2024 3 2.1 C

The Contractor shall supply/install/calibrate five (5) New Water Flow Meters with Thirteen (13) Set of Ultrasonic Water Flow Sensors. Three for each Penstock Generator and Two for each Hollow Jet Valve

Same as above, #5 Include 5 new Flow Meters. One for each penstock (3) and one for each Holoow Jet (2) a total of 5 New Flow Meters

7 3/4/2024 3 2.1 G

The Contractor shall Provide/Install/Test/Calibrate Thirteen (13) New Set of Ultrasonic Water Flow Sensors that will be mounted on Three (3) Penstock and Two (2) Hollow Jet Valves Pipes inside The Power Plant Building.

Same as above, #5 Include 5 new Flow Meters. One for each penstock (3) and one for each Holoow Jet (2) a total of 5 New Flow Meters

8 3/4/2024 1 1.4 A.4 The Contractor Shall Install/Update/Compile Data of New Water Flow Sensors with New Water Flow Meters

What does 'Compile Data" mean? Is this calibration data? What data is being requested

Basically test the new sensors and meters and provjde data.

9 3/4/2024 6 3.2 A The Government will not be furnishing any utilities for this project including, but not limited to electricity, telephone, sewer, and natural gas.

If we will not have electrical power, will we need to bring generators?

That clause in reference if the Contractor decide to move a construction trailer to the site. Electricity to perform the project will be provided by IBWC

QUESTION DATE PAGE SECTION SUBJECT QUESTION RESPONSES

10 3/4/2024 5 2.3 B.a

The Contractor shall furnish factory-trained representatives as required to conduct training sessions on the operation and maintenance of constructed works. The trainers shall be qualified in providing all required training and have expert knowledge of all aspects of the operation and maintenance of their systems and associated components.

Is there an expectation of how many training sessions?

One training session should be enough for Falcon Power Plant Personnel

11 3/8/2024

Edi Delgado expressed his desire that the new installation have conduit or cable tray raceway from the transducers to the control room devices. The current installation is a mixture or tyraps to piping and tyraps to clips on the wall. There is a section that drops through grating and routes through a trench below floor level. I’m not sure what potential exposure to spilled substances exists for the current or proposed cables, or if there is a potential code violation.

Which method would you prefer us to base our proposal on?

New signal wires from the control room all the way to Penstock and Hollow Jet locations will be using current cable trays and more likely exisiting routes.

12 3/8/2024 7 3.4 A/B This section assigns responsibilities for dealing with discovery of, and providing a finding report that includes a plan for the handling and disposal of lead and/or asbestos containing materials.

Who will be responsible for the actual remediation and how do we quantify it for bid purposes?

The contractor will be responsible to test and diposal of asbestos and lead paint piping as estipulated in the PWS.