A00001 cont'd Sol No. 70Z04020QP3059800 (47223).pdf

Solicitation No. 70Z04020QP3059800

CG STA SUISLAW RIVER (47223 MLB) A00001 CONT’D

Question 1: WORK ITEM 3: Hull Plating (U/W Body), Inspect

1.1.1 Coating system inspections. 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.

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

1.1.1.2 Dry film thickness (DFT) measurements. Take total DFT measurements of the U/W body coating system, in accordance with SSPC-PA 2.

1.1.1.3 Coating system thickness and scheme inspection. Perform a microscopic observation of precision angular cuts in the coating system film (“Tooke Paint Inspection”), in accordance with ASTM

D4138, and measure the total coating thickness and thickness of each individual coat of paint, in

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 QC measures for “critical-coated surfaces”).

NOTE

The Tooke Paint Inspection Gage/Gauge (Plastic) is a precision tool for inspection and thickness measurement (ASTM D4138) of single or multiple coats on any substrate, and for microscopic observation and measurement of substrate and film defects. The gage uses an illuminated 50-power microscope with measuring reticle, and mounts tungsten carbide cutting tips for precise incision of the work surface.

Direct measurement of total coating thickness and thickness of individual coats of paint is a unique capability of the Tooke Paint Inspection

Gage/Gauge. Thus, in addition to routine use, it often serves as a “referee” instrument to calibrate indirect or non-destructive thickness measuring instruments.

Other uses include assessment of substrate conditions and coating adhesion, and observation of microscopic cracking, tendency for brittleness, cratering, or other microscopic film symptoms.

1.1.1.4 addition to identifying/verifying the existing color scheme for each coat of paint comprising the coating system.

1.1.1.4.1 Take a total of four readings in locations designated by the Coast Guard Inspector, and as follows:

one each, port and starboard, in the boot-top area; and one each, port and starboard, below the boot-topping.

1.1.1.4.2 Ensure that the repair of all areas affected by the destructive Tooke Gauge inspection is included in the optional repair work item that is activated by the result of the inspection.

Question 1: This has been put in other contracts in the past but then removed after submitting questions since the bottoms of these boats are being 100% blasted and painted.

Under these notes 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?

The 47234 contract Work Item D-3 paragraph 3.2.7 is the one used in the past.

Do we eliminate these paragraphs?

Answer: This Section was a Mistake on the APM’s Part. This is a Visual inspection and requires no tooke gauge inspection. No Nace inspector is required.

Question 2: WORK ITEM 6: 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 Paint schedule. 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 2: 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 not mechanically cleaning them, 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?

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 3: WORK ITEM 8: Accessible Spaces, Inspect

Table 1. 1-ADDITIONAL ITEMS.

Molding underneath splash screen on open bridge is worn and no longer properly sealing. (Recommend renewal of splash screen molding/gasket). KTR shall remove splash screen and renew Molding/Gasket.

Open Bridge.

Question 3: Is the splash screen and the wind screen the same thing, and is the KTR an acronym pertaining to as the Contractor?

Answer: Yes and Yes. Splash Screen is the wind screen. And for future projects I will use Contractor vice

KTR.

Question 4: WORK ITEM 9: Tanks (MP Fuel Service), Clean and Inspect

3.9 Ultrasonic thickness (UT) measurement. The Contractor shall take a total of 50 UT measurements of tank plating, in locations designated by the Coast Guard Inspector, in accordance with SFLC Std Spec 0740, Appendix C. Use Coast Guard Drawing { } as guidance. Submit a CFR.

Question 4: This has been a misprint in the past, do you want this work completed?

Answer: Yes this is a misprint. DO not conduct any UT shots in the fuel tanks.

Question 5: WORK ITEM 17: Exterior Deck Lights, Inspect

3.4 Reinstallation. Reinstall deck lights to original configuration; renew all light bulbs.

Question 5: Do you have a part number for these bulbs?

Answer: No. The only part number I have is 1692.

Question 6: WORK ITEM 19: 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 6: Are these special OEM hoses still contractor supplied or GFE, and are all of the hose end fittings that are not reusable under the end fitting inspection to be put on a change request for renewal?

Answer 1: Since there has been some mis-understanding on previous contracts. For this contract, submit a CR for any fittings that need to be renewed, all fittings that need to be renewed will inspected by PE/COR and agree with KTR recommendations. If fittings need to be renewed and they have been inspected by PE/COR funding will be provided but extension will not be granted because labor hours are within the scope of work.

Answer 2: Special OEM Hoses shall be supplied by the Contractor

Question 7: WORK ITEM 22: 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 7: Are we to renew fasteners with in-kind materials, not nickel-copper alloy?

Answer: YES in kind

Question 8: WORK ITEM 22: 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 8: 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.

Should be a change request for new ones if they not overhaulable, or will the GFE listed be available without contractor cost?

Answer: Yes PE/COR will request as GFE if they cannot be overhauled. Bid for Overhaul

Question 9: WORK ITEM 23: Sea Strainers - Simplex (All Sizes), Clean and Inspect

3.2.3 Reassemble. After completion and acceptance by the Coast Guard Inspector, reassemble all strainers. Renew all hardware with nickel-copper alloy (Monel) fasteners.

Question 9: Are we to renew fasteners with in-kind materials, not nickel-copper alloy?\

Answer: YES in kind

Question 10: WORK ITEM 33: Bilge Preservation, Auxiliary Space

Question 10: I believe this is just an error on location as in some of the previous bids since the location in table one is in the engine room which is already covered under WORK ITEM 21. Is the concerned area just in the Aux Space as listed not Table One in the intent of work?

Answer: My intent is to Preserve the bilge in the Aux as per WI 33. As for Table 1 and the intent to preserve the pocket under the strainers in the engine room. I need that preserved as well. IF that pocket is covered under WI 21 please disregard. DO not bid on preserving the pocket (under strainers) in the engine room twice. REV-01 will NOT be issued.

Question 11: WORK ITEM 36: Interior Hull Insulation, Renew

Question 11: Can the bulkhead 5 sound board be reused if in good condition and just renew the solimide polyimide insulation?

Answer: Yes. If the sound board is in good condition it can be re-used.