Sol_No._70Z04019QP3046300_A00003_(Cont.).pdf

Sol No. 70Z04019QP3046300

A00002 (cont’d)

Question 1: WORK ITEM D-1 General Welding, Provide

TABLE 1- GENERAL WELDING

ITEM DESCRIPTION LOCATION APPROXIMATE

SQFT.

Replace corroded mast junction box Mast junction box

Question: On the Mast junction box, it is the one in the pictures, correct? Is this a manufactured box that is still available or is it up to the contractor to fabricate a new one? If available what is the manufacture, material, and part number?

APM ANSWER: This will be the large box on the port side of the Upper Buoyancy Chamber.

Part number 10848-103

Question 2: WORK ITEM D-1 General Welding, Provide

3.3 Bidding. The Contractor shall ensure for bidding purposes this specification will be broke down by the following:

• One linear foot of welding/brazing.

• Four square inches of clad/overlay welding.

• One hour of fabrication.

• One square foot of plate renewal.

Question: I don’t see this in other bids, are we to give bid prices to these items, and will the

COTR designate the jobs for these items? There is no TYPE/GRADE of plate type listed in

Table 2, are we to use the 5456 that is called out for in the prints?

APM ANSWER: 3.3 is suggestion on how to bid. Use type/grade of plate in accordance with the prints.

Question 3: WORK ITEM 3: Hull Plating (U/W Body), Inspect

3.2.7 Coating system inspections. The Contractor shall accomplish the below inspections, in conjunction with the underwater hull inspection conducted by the Underwater Hull Inspection

Board (UWHIB). Document the condition found as “Partial - Condition A”, “Partial - Condition

B”, “Partial Condition C”, or “100%”, as applicable (see 4.1 (Definitions)). Submit a CFR.

NOTE

The following inspections are for determining the existing condition of the coating system for the underwater body surfaces, which are deemed “Critical-coated” surfaces; they must be carried out by a SSPC-QP-1 certified contractor/sub-Contractor or a NACE Inspector– see SFLC Std Spec 0000, paragraph 3.2.4.2

(In-process QCmeasures for “critical-coated surfaces”).

3.2.7.1 Visual. Perform a visual inspection of the existing U/W body coating system.

Question: Under the note it is requesting for a QP-1 or Nace Inspector, is this necessary since the bottom of the boat is going to be 100% sand blasted and painted and checked by the QP-1 or

Nace Inspector at that time?

APM ANSWER: Nace inspector is not required for the UW hull inspection, however, a NACE 3

Coatings Inspector will be required IAW with requirements as stated in Std Spec 0000 (Surface

Prep, coating application, coating thickness readings, etc…)

Question 4: WORK ITEM 5: U/W Body, Preserve (100%)

Question: Is utilizing the Sherwin Williams NACE-3 inspector still acceptable as in the past?

APM ANSWER: No. Contractors will need to follow Std Spec 0000. Nace 3 coating inspector’s independent from any paint supplier will be required as per Std Spec 0000.

Question 5: WORK ITEM 7: Tanks (Mp Fuel Service), Clean And Inspect

3.1.4.2 Stow all fluids in suitable stowage facility, immediately after removal, and re-stow all tank contents, upon completion of work. Contractor shall ensure fuel quality is maintained throughout all stages of the process

4.1 Tank content removal. The Ship’s force will pump down the tanks to the maximum extent possible with the installed pumping system.

4.2 Tank content restoration. The Ship’s force will procure new fluids and refill all tanks at the appropriate time.

APM ANSWER: Note: 4.1 and 4.2 should have been deleted.

3.1.4.1 The Contractor shall remove up to a total of 373 gallons of diesel fuel. Document a complete chain of custody record of the removed tank contents from the vessel to the point of final destination or delivery. Submit document to the COR upon completion of work.

Question: Is this correct, and then is Work Item 14 being eliminated?

APM ANSWER: Contractor is responsible to refuel the vessel.

No, 3.1.4.2 Stow all fluids in suitable stowage facility, immediately after removal, and re-stow all tank contents, upon completion of work. Contractor shall ensure fuel quality is maintained throughout all stages of the

Question 6: WORK ITEM 11: Standard Hoses, Renew

053-B

STEERING SYSTEM

RAM BLOCK TO STBD

RAM FITTING 104 MM

LONG

OEM

HM226

2/104

N/A

053-C

RAM BLOCK TO CEN

AFT RAM FITTING 435

MM LONG

1/435

053-D

RAM BLOCK TO PORT

RAM FITTING 335 MM

LONG

1/335

Question: Are these special OEM hoses still contractor supplied or GFE?

APM Answer: These Steering hoses will be contractor supplied

Question 7: WORK ITEM 13: Sea Strainers - Sea Strainers - Duplex (All Sizes), Overhaul

3.3 Reinstall. After completion and acceptance by the Coast Guard Inspector; the

Contractor shall reinstall all overhauled, cleaned and new strainers to their original locations, as shown on Coast Guard Drawing 47B-MLB 505-020 and TP 3359. Renew all gaskets with material conforming to ASTM D1330 of the same size and configuration as those gaskets removed. Renew all hardware with nickel-copper alloy fasteners.

Question: Are we to renew fasteners with in-kind materials, not nickel-copper alloy?

APM ANSWER: YES

Question 8: WORK ITEM 13: Sea Strainers - Sea Strainers - Duplex (All Sizes), Overhaul

3.6 Contractor’s option for strainer renewal. The Contractor may opt to renew strainers designated for overhaul if preferable for the Contractor, and is at no additional cost to the

Government. New strainers shall be equivalent (including identical material) to the strainer being renewed. Visually inspect the piping and mounting arrangements, and submit a CFR detailing any required modifications to accommodate the new strainer(s).

Question: In the past, we have always had these strainers as GFE if they were not overhaulable, because, why would the contractor spend $6,000.00 on the new strainers when if the strainers were overhaulable, only costing about $1,000.00. Does not make fair bidding for the contractor to gamble they are in good condition, then if not, must purchase new ones.

This should be a change request if they not overhaulable, correct?

APM Answer: This is an error in the Specification that was not caught, If the Contractor submits a CFR stating that Strainers cannot be overhauled. USCG will provide new strainers as GFE. Just bid for Overhaul.

Question 9: WORK ITEM 20: Bilge Preservation, Auxiliary Space

TABLE 1 - PAINT SCHEDULE 47 MLB

INTERIOR

SURFACES

TO BE

PRESERVED

SURFACE PREPARATION

COATING

SYSTEM

DFT

(MILS

COLOR FED

STD 595

COLOR #

Auxiliary Space Bilge (FR8-10) outboard to the longitudinal girders.

POWER TOOL CLEANING

PER SSPC-SP11 SO AS TO

ACHIEVE A 1.5-2.0 MIL

ANCHOR PROFILE

1) High Build Epoxy

2) High Build

Epoxy

5.0-6.0

5.0-6.0

Light Gray #26373

Light Gray

#26373

3.4 In-process quality control measures. The Contractor shall abide by all the safety, preservation, and quality control requirements specified in SFLC Std Spec 0000, paragraph

3.2.4.2 (In-process QC measures for “critical-coated surfaces”).

Question: This is not a sand blasted surface and has not been a “critical-coated surfaces” in the past as well; this should not require a Nace inspector.

Is a Nace inspector really needed?

APM ANSWER: SSPC-SP11 surface prep is to be used and a Nace inspector is not required for coating the Aux Space Bilge.

Question 10 : WORK ITEM 21: Hull Plate, Renew

3.2.2 Ultrasonic thickness (UT) measurement. The Contractor shall take a total of 100 UT measurements of the hull plating in locations designated by the Coast Guard Inspector, in accordance with SFLC Std Spec 0740. Perform a UT inspection of the affected plating beyond the areas described in paragraph 3.2 to determine the boundary of sound material. Chalk out the boundary of the corroded plating where the remaining thicknesses are less than 75% of the original thickness as shown on Coast Guard Drawing

47B-MLB 110-500. Submit a CFR.

Question: Are these UT shots covered under D-2 or addition to?

APM ANSWER: All UT shots will be covered under D-002. 100 total, do not bid on the additional 100 UT shots

Question 11: WORK ITEM 21: Hull Plate, Renew

3.2.4 Pre-welding requirements. The Contractor shall follow the DDEC disconnect procedures in accordance with Textron Service Bulletin 001(Pre Welding Requirements) as listed in Coast

Guard Technical Publication 3355, prior to any welding.

Question: Is this work being completed by USCG personnel as per SFLC 0000?

APM Answer: DDEC disconnect procedures will be handled by Coast Guard members.

Question 12: WORK ITEM 22: Main Diesel Engine, Renew and Install

3.3 Installation. Install the engines in accordance with CG DWG 47B-MLB 201-010 and TP-

3918C.

Question: Are we to renew all the engine gaskets, soft patch gaskets, and fasteners as well?

APM ANSWER: Yes

Question: Is the contractor responsible for flushing out the engine and renewing all coolants and oils?

Question 13: WORK ITEM 23: Main Diesel Engine Exhaust System, Clean And

Inspect

3.2.1 Exhaust splitter valve. The Contractor shall remove the exhaust splitter isolation valve from the crossover pipe between the two mufflers and transport to a suitable machine shop for overhaul.

3.3.1 The Contractor shall overhaul the exhaust splitter valve with Contractor- furnished overhaul kit in accordance with manufacturer’s instructions. Renew all manufacture approved gaskets and O-rings.

Question: After researching the valve company information on the overhaul, and available kits, the valve company states that those valves are not overhaulable and need renewed because they will never pass the pressure test or seal properly again.

Do you want the contractors to supply new valves as part of the bid?

Question 14: WORK ITEM 25: Rub Rail, Remove, Inspect and Install

3.4 Reinstallation. After the completion of all inspections and any authorized repairs, the

Contractor shall re-install each rub rail section, using new nylon insert locking nuts.

3.6 Preparation/Preservation. For vessel 47206 and subsequent, area covered by fendering system and aluminum faying surfaces (surfaces of similar or dissimilar materials that are fit closely together and fastened) shall be painted in accordance with CG Drawing 47B-MLB 631-

020.

Question: There is no scope of work about installing the rub rails as shown on BP#47B MLB

611-020 Rev H sheet 3 of 3 items 8 & 9. Wanted to check to see if we are still sandblasting the hull surfaces, inspecting them, applying two coats of the epoxy paint, applying a full coat of

5200 sealant on the hull surface then utilizing the 4200 sealant to seal up the seams and edges?

APM ANSWER: Yes the spec is somewhat vague on the work required. Based on paragraph

3.3.1(Clean & Inspect), the rub rail, fender mounting surfaces, etc shall be inspected and a CIR submitted with results of inspection and any recommended repairs. The coating system is not to be applied/renewed until a CIR is submitted and a CR approved. A full coating of 5200 and 4200 on the seams will be applied upon re-installing the rub rails.

Question 15: MISC D-ITEMS NOT LISTED. Previously asked on 2-21-19.

Setting up this bid we noticed that there are items that have been continuously on the past and upcoming bids that are not on this one. The D-Items listed below are ones for inspections.

Accessible Spaces, Inspect

Various Piping, Inspect

Sea Strainers - Simplex (All Sizes), Clean and Inspect

APM ANSWER: These work items will not be added in the package during this drydock.

Question 16: General Welding

Do you have any pictures of the welding issues?

1.1 Repair crack on 6"-8" weld on the forward peak through the deck - States "Submit CFR for more work". Is the intent to have us submit a CFR after the work is complete, or would this work be performed only after submitting a CFR.

APM Response: Perform repair then submit CFR

1.1 Repair/Crop/Renew 1" crack starboard bow handrail near the deck on the rail support bracket - States "Submit CFR". Is the intent to have us submit a CFR after the work is complete, or would this work be performed only after submitting a CFR.

APM: Response: Perform repair then submit CFR .

1.1 Crop/renew vent piping sleeve elbow in the forward compartment - States "Submit CFR for more work". Is the intent to have us submit a CFR after the work is complete, or would this work be performed only after submitting a CFR.

APM Response: Perform repair then submit CFR.

1.1 Crop/renew dented starboard quarter - what size area needs to be renewed? Which stringer

APM Response: 1 Square foot. See attached MRR pictures, pg. 7, top left corner.

Question 17: D-021 Hull Plate, Renew

-3.2.2 Ultrasonic thickness UT measurement

The UT inspection on D-002 will cover this area. Do you want 100 additional shots for just this location?

APM Response: No