70Z04018QP3047800_A00001__(continued).pdf

70Z04018QP3047800

Amendment Number A00001

14. (cont’d)

Question 1: For bidding purposes these items state (clad/renew). Are you giving the contractor the option of what to do? It is hard to give a bid when the scope of work is completely different between the two, we could have 2-3 hours to clad weld a 15 square inch area or 10-15 to renew the same area.

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

Main deck, port aft deck box; 10 sq in, deck (clad/renew)

Main deck, stbd aft deck box; 10 sq in, deck (clad/renew)

Main deck, center aft deck box; 10 sq in, deck (clad/renew)

Lazarette, along keel; 6 sq in (clad/renew)

Engine room, from FR 1 to FR 3 along keel; 12 sq in clad weld (plate renew)

Aux space, from FR 8 to FR10; 12 sq in clad weld (plate renew)

Answer 1: Rev-1

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

Paragraph 3.3:

3.3 The aluminum plate listed in Table 1 shows no type of alloy list such as (5456):

Answer 2: Rev-1

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.

In our past previous contracts from the 80’s & 90’ this inspection was used to turn on optional items that the contracts had, such as 100% Under Water Body Renewal or to just do a partial 10%, which was to blast all of the A/F off to the epoxy and build the system back up. They found that this 10% did not work well on the small boats so started doing just the 100%. We still inspect this, but knowing we have the D-Item to complete this 100%, which is as far as it needs to go for inspection. 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? The only thing this would determine is how often the station personnel painted the bottom over the last 5 years.

Previous USCG Answers: We are using standard work Items in our specification. This

Work Item has the potential for use during a dry dock where the Coast Guard requesting information for determining bottom paint requirements and whether a platform requires full or partial painting. For this contract we a requiring 100% bottom paint under work

Item D-23. No DFT measurements are required from the contractor. Port Engineer will take the responsibility to complete DFT requirements. UPDATED in REV-1 to reflect.

3.2.7.2 and 3.2.7.3 deleted from package

Previous USCG Answers:

NOTE:

These 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”).

Spec Writer Reply: Prior to applying paint contractor will be required to prep surfaces to SSPC-QP-1. CG Port Engineer will verify no need for outside NACE inspector.

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

Spec Writer Reply: complete visual inspection

Answer 3: The “Previous USCG Answers” provided in the question apply.

Question 4: WORK ITEMS 4: Rub Rail

3.4 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.

3.5.1 The Contractor shall apply sealant to the top and bottom of each renewed rub rail in accordance with CG Drawing 47B-MLB 611-020

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 hull surfaces, inspecting them, applying two coats of the epoxy paint, applying a full coat of 5200 on the hull surface and utilizing the 4200 on the seams?

Previous USCG Answers: The Contractor is required to apply sealant to the top and bottom edges as well as the sealing surfaces shown in the drawing MLB 611-020.

The CG is requiring the full coat installation of sealant between the rub rail and hull surface.

3.5.1 The Contractor shall apply sealant to the top and bottom of each renewed rub rail in accordance with CG Drawing 47B-MLB 611-020.

Answer 4: Review para 3.4. The “Previous USCG Answer” regarding sealant applies.

Question 5: WORK ITEM 5: Bulkhead Penetrations, Frame 5, Inspect

1. SCOPE

1.1 Intent. This work item describes the requirements for the

Contractor to inspect the bulkhead surfaces and fuel piping penetrations at Frame 5 and renew all r/w system piping, adapter & fitting penetrations.

Scope of work calls out to renew all r/w system piping, adapter & fitting penetrations.

Par 3.4, calls out to put in a change request in for the piping and flange, and is this not covered in par 1.1?

Previous USCG Answers: The Contactor is required to renew only the blkhd 5 salt water pipe penetration assemblies which are the port and stbd r/g cooler supply and return piping, fittings, and adapters. Which covers all components.

Answer 5: Para 3.4 applies to any repairs not covered in para 1.1.

Question 6: WORK ITEM 5: Bulkhead Penetrations, Frame 5, Inspect

Par 3.5, can the sound tiles be reused on the engine room side?

Previous USCG Answers: The CN-38 tiles are reusable. If the tiles are found during the removal to be damaged or not reusable then a Condition Found Report / Change

Request will be submitted for the renewal of the CN-38 tiles.

Answer 6: “Previous USCG Answers” provided in the question apply.

Question 7: WORK ITEM 6: U/W Body, Preserve (100%)

Is utilizing the Sherwin Williams NACE inspector still acceptable as in the past?

Previous USCG RESPONSE:

A NACE level 3 inspectors shall be used. An inspector from Sherwin Williams is acceptable.

Answer 7: “Previous USCG RESPONSE” provided in the question apply.

Question 8: WORK ITEM 14: Cardan Shaft(s), Renew

Are we renewing both the P&S Cardan Shafts, or just one side?

Answer 8: Rev-1

Question 9: WORK ITEM 33: Bilge Preservation, Auxiliary Space

If I am not mistaken the TCTO for this calls out for the surface prep to be mechanically cleaned and apply two coats of epoxy IAW the Coatings & Color Manual, as we have been doing under the Sea Valve Items from day one of all the 47MLB contracts in the past.

Question: Do you seriously want to sand blast the interior of the AUX space with all of the electrical in it, plus contaminating the Survivors Compartment?

Previous USCG Answers: No, we do not want to Sandblast the interior of the AUX space. Surface preparation for WI34 updated in REV-1 from Near White to mechanical clean.

Answer 9: Rev-1