Sol_no_70Z04019QP3087000_A00001_(Cont).pdf

Sol No. 70Z04019QP3087000

A00001 (cont’d)

Question 1: WORK ITEM 1: General Welding, Provide

Soft patches are made from thin metal that allows water intrusion and warping. (recommend renew soft patches with stronger metal)

MAIN DECK Fabricate and

Renew (02) Soft

Patches.

Something sturdier than the current ones.

QUESTION: Just a thought, but for a company that has removed these several times before, why not go with a single soft patch such as the style of the 47MLB except just one?

But, by going with a single patch, the deck flange needs to be increased to at least ¼if not 3/8 thickness and the deck material of the soft patch to at least 3/16, utilizing 5086 aluminum with appropriate framing so to also house appropriate insulation as well. The thing to make sure of though is the opening does not get any smaller than what it is.

APM Response: For the time being, we are going to stick with the 02 Soft Patches to match the other 52’s. Little far in the process to get authorization from Engineering to change the configuration.

Question 2: ALL WORK ITEM DEALING WITH SAND BLASTING AND PAINTING.

WORK ITEMS-4, 19, 20, ALL SPACES IN WI-26, AND 27 THAT

ARE

CONSIDERED “critical-coated surfaces.

Question: Since utilizing the Sherwin Williams NACE-3 inspector, is still not acceptable, as in the past. We also, in the past, looked at the possibility of training one of our own employees to become a QP-1 inspector. At that time we were still told that the inspector, either Nace-3 or QP-1 had to still be a third party person and could not be employed by the contractor? Is this statement still correct?

APM Response: NACE 3 needs to be third party. QP1 can be employed by the contractor.

Question 3: WORK ITEM 5: Appendages (U/W), Leak Test

TABLE 1 – PLUGS FOR U/W APPENDAGES

APPENDAGE FRAME SIDE

Bilge Keel 20 to 40 P/S Skeg 15 to 45 CL

QUESTION: There are several other voids and appendages on this boat that are not in this table, will the others be a change request to inspect?

APM Response: Since the package has only these voids listed, BID Only on these voids/appendages. If we need to inspect the other voids/appendages, submit CFR/CR attached to U/W Body Inspection. But for Bidding. Bid as is.

Question 4: WORK ITEM 7: Tanks (Potable Water), Clean and Inspect

1.1 These tanks currently being used for ballast and are NON-POTABLE water tanks. The

Title cannot be changed, so understand these are non-potable water tanks.

3.8 disinfecting. After all other work involving the potable water system and tank closing have been completed, the Contractor shall disinfect and treat the affected potable water tank(s) and associated disturbed piping and components, as necessary, to meet or exceed the requirements of

AWWA C652. After tank disinfecting; remove and dispose of all treated water in accordance with all Federal, state and local regulations. Ensure that no one enters the tanks once disinfection is completed.

QUESTION: Just double checking, since these are now NON-POTABLE tanks then paragraph 3.8 is not needed, correct?

APM Response: Yes you are correct. These are not Potable Water tanks. Please disregard section

3.8 disinfecting. This should have been removed and was a mistake on the APM’s part.

Question 5: WORK ITEM 10: Propulsion Shaft Bearings (External), Renew

WORK ITEM 11: Propulsion Stern Tube Bearings, Renew

The last I was a ware of, was there is two strut bearings and two stern tube bearings located in the aft end of the stern tubes and two PSS shaft seals. These are non-metallic 2 1/8 x 3 1/8 bearings.

QUESTION: Under these items are you asking to renew all four bearings under Work Item-10 and the PSS shaft seals under WR-11?

APM Response: Correct. In the past it was EXTERNAL BEARINGS, RENEW. Things have changed and the SPEC Writers are changing the Work Items.

Question 6: WORK ITEM 14: Sea Water Valves, Renew

3.4 Renewal. The Contractor shall renew all designated valves in Section 1.1 (Intent) with commercial- standard type valves, conforming to the applicable standard listed in Table 2 (Valve

Standards). The Contractor shall accomplish the following:

Ensure all new valves shall be of identical type and size as specified in CG Drawings.

QUESTION: Is the USCG going with just standard valves or are we to use the bonze with monel trim as listed in the drawings BM-6?

APM Response: Contractor is authorized to use standard valves. This will reduce the cost.

Question 7: WORK ITEM 15: Fire Pump, Overhaul

3.3.1 Renew port and stbd fire Pump to Power Take Off (PTO) drive belt in accordance with

Coast Guard Drawings 52 MLBS 4000-1, Coast Guard Drawing 52 MLBS 4700-5, and Coast Guard Drawing

52 MLBS 4700-6.

QUESTION: Just double checking on the belt, is this the correct one to use, that is listed in the print?

Question 8: WORK ITEM 17: Rudder Assembly; Remove, Inspect and Reinstall

3.3.1 NDE. The Contractor shall perform NDE in accordance with SFLC Std Spec 0740, Appendix C. If selected NDE method requires coating removal, perform subsequent touch-up preservation in accordance with SFLC Std Spec 6310, paragraph 3.1.13 (Touch-ups and minor coating repairs). Submit a CFR.

QUESTION: We have always just dye-pen these in the past, is that still expectable?

APM Response: dye-pen is authorized. Please make sure the PE/COR is present for the inspection.

Question 9: WORK ITEM 21: Cathodic Protection / Zincs, Renew

TABLE 1 - ZINC ANODE LIS T

QTY TYPE SIZE LOCATION

6 Zinc, Barrel shape 2 1/8” diameter Port & Starboard shafts (3 each) 6 Zinc, Rectangle shape 12” x 6”. Hull – 6 locations

NOTE

Common NDE methods not requiring coating removal include, but are not limited to the following:

a. Radiographic Testing (RT).

b. Ultrasonic Testing (UT).

c. Eddy Current Testing (ET).

QUESTION: There are different thicknesses for this zinc size. Are we to use the 1 ¼” x 6” x

12” s bolt on?

APM Response: Yes use the 1 ¼” x 6” x 12” s bolt on.

Question 10: WORK ITEM 30: Sea Strainers - Duplex (All Sizes), Overhaul

SERVICE

SIZE (INCHES)

QTY

MANUFACTURER

Main Engines 1 1/2" 2 Kraissl

QUESTION: If I am not mistaken, this boats strainers was modified in 2010, and are now the

Groco VD2500? If this is correct do you want the 47MLB spec to be used to overhaul these strainers?

APM Response: Correct, These will be a Groco Re-build. Please use 47spec for WORK ITEM

30: Sea Strainers - Duplex (All Sizes), Overhaul. Bid for Groco Strainers.

Question 11: WORK ITEM 26: Bilges, Preserve

QUESTION: For all the bilge areas are we just to blast and paint up to the deck plate surface?

APM Response: Correct.

QUESTION: Is the USCG allowing the contractors to keep the distribution panel and transformer in the bilge area while blasting and painting in the engine room?

APM Response: Contractor can keep panel and transformer in place. Contractor needs to take measures to cover and protect at all equipment. No blast grit is to enter panel or transformer.

QUESTION: Just needed verification that the bilge surface areas also include the entire MDE engine frames, fire pump frames, battery frames, and all the other brackets and frames that are in that bilge area as well?

APM Response: Correct.