Questions and Answers Rev 2.docx

Questions and Answers Rev 2. 10/14/20

1) Is 480V 3-phase 100amp power available from shipyard or is the KTR to provide a generator to run flushing rig. YES San Diego Det. will provide

2) What is the diameter of the piping that will be flushed on the external hydraulics? (This will be used to determine the required flow rate for flushing) or if there is already a NAVAL required flow rate can you provide that? ¼” to 2-1/2” IPS

3) SOW states that KTR is to provide flushing oil and 1000 gallons of Final Fill oil. Do you know how many gallons of oil is needed to fill the entire external hydraulic piping system that will be in the flushing circuit? ~ 300 Gallons.

4) Is the BOAT in the dry dock for this flushing evolution? The Ship will be pier side flushing will occur over water.

5) Does the Shipyard know the size and type of connections the KTR equipment will need to connect too? The standard size of connection will be -16 JIC / 1 Inch

6) What is the PASS/FAIL criteria for completion of the hydraulic flushing phase? NAS Class 5 with less than or equal to .05% water content

7) Is there a visual flush screen or filter bag inspection? Not Required for this flush procedure

8) # At what pressure will the flushing be completed at? Max pressure is 3600 psi Nominal is 1500 psi

9) What is the diameter and length of the piping/any drums to be flushed. Need flush approximately 40 55gal drums, Any portable piping will be flushed in SD-Det shop

10) What are the flow rates to be attained? 30 Gallons per minute (30GPM)

11) can we get a copy of the flushing procedure to be used to assure the right flushing equipment is used onsite – The flush is conducted in accordance with SUBMEPP TP 553-5542. Please contact the POC on this solicitation for a copy.

12) What idos the average time for lab testing of the oil? Approximately 4 hours

13) Who will supply flushing oil and it is our understanding that KTR will supply the new oil for filling after the cleaning is completed. is this correct? The contractor will supply 1,000 gallons and yes, that is included in the 1,000 gallons.

14) Will we be cleaning the run oil to NAS 5 and pump it into the system after it is restored? Yes

15) Will all jumpers be installed before we arrive? Will check valves be removed or will they remain in place on the system? The first leg will be set up before the contractor arrives all other lops will be set up as they go. Any check valves that needs to be removed will be removed by the shipyard.

16) Will we be cleaning supply tanks on sub-if so what is the size and capacity? V/S tank will be cleaned by Shipyard

17) Will we be cleaning separated pipes and fittings at the DS Shop location- what is the length and diameters? No

18) How many flush loops are there. Sail flush has approx.12 flushing loops. Header flush as of now has approx. 27 flushing loops. 95% of the flushing loops are forward and reverse flushes.

19) Will there be lab access at night for samples to be run? Yes

20) Who will complete the hydrostatic test inside of the vessel? No hydrostatic test only mechanical joint testing

21) 10. What is the purpose of the cleaning project? Is this new construction or existing piping being cleaned

22) Is there a temperature required for the oil prior to starting flushing of the system? The approximate temperature should be in the procedure.

23) Can an extension be considered due to the amount of information needed to put together a composite proposal? Unfortunately, no extension can be given due the urgent and tight deadline for this service to be completed.