70Z04019QP3065400_A00001_Continued.pdf

70Z04019QP3065400 STA COOS BAY (47235)

Amendment A00001

Question 1: 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: 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?

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 2: WORK ITEM 19: 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?

Answer: No, do not bid on the valve. If the valve needs to be renewed the PE/COR will provide for the contractor.

Question 3: 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

70Z04019QP3052900 STA TILLAMOOK BAY (47254) Amendment A00001 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?

Answer: YES in kind

Question 4: 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: 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?

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

Question 5: 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: Are we to renew fasteners with in-kind materials, not nickel-copper alloy?

Answer: YES in kind

Question 6: WORK ITEM 33: Bilge Preservation, Auxiliary Space

Question: I believe the concerned bilge area is just in the keel area of the Aux Space, between frames 8 to 10 only, since the painting for under the strainers is covered under the Work Item 21? Is that correct?

Answer: Correct Bilge Preservation, Auxiliary Space covers from frame 8 to 10 only but

I also added to preserve the areas under the engine room strainers. Work Item 21 does cover the preserve under the strainers as well. Please only bid to preserve under the

70Z04019QP3052900 STA TILLAMOOK BAY (47254) Amendment A00001 strainers in the Engine room one time. It is listed twice in the spec - please only bid on it once.

END OF AMENDMENT A00001