Sol_No._70Z04019QP3048800_A00001_(cont).pdf

Sol No. 70Z04019QP3048800

A00001 (cont’d)

Question 1: 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: DO not bid on these items. These are just a reference on how to bid (examples)

Question 2: 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 3: 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 4: 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?

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 5: WORK ITEM 12: Main Diesel Engine, Remove And Install

1.1 Government-furnished property.

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED

COST

($/UNIT)

N Soft Patch Gasket NSN: 5330-01-631-0907 or

P/N: 47-SPG-1

1 ea. 114.50

Question:

In the past we utilized the USCG GFE soft patch gasket and they were not to the print, had the wrong durometer readings, and we had issues with them sealing, are these built to the print with the correct durometer reading?

APM Answer: These will be provided as GFE, If they are incorrect we will go from there. CFR/CR

Question 6: WORK ITEM 15: Propulsion Shaft, Remove, Inspect, and

Install

MTI ITEM DESCRIPTION NSN/PN QTY ESTIMATED COST ($/UNIT)

N Shaft Seal(3-1/2”) NSN: 2040-01-497-or

PN:

2 ea. 324.45

Question: Listed above is the wrong size shaft seal, will the 3 ¾ GFE shaft seals be supplied instead?

APM Answer: 47235 and lower require 3 ½ inch seals. 3 ½ will be provided as GFE. If they are wrong the

PE/COR will request the 3 ¾ to be shipped priority 2.

Question 7: WORK ITEM 18: 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

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

APM Answer: Contractor to provide.

Question 8: WORK ITEM 19: Various Piping, Inspect

TABLE 1 – PIPING SYSTEM COMPONENT INSPECT

SYSTEM SUB-SYSTEM COMPONENT LOCATION

Question: Below are the items listed from contracts in the past, which ones are we going to be inspecting?

TABLE 1 – PIPING SYSTEM COMPONENT INSPECT

SYSTEM

SUB-SYSTEM

COMPONENT

LOCATION

Raw water Engine room R/W circulation Port Strainer discharge to r/w pump inlet

Forward of port engine

Raw water Engine room R/W circulation

Stbd Strainer discharge to r/w pump inlet

Forward of stbd engine

Raw water Engine room R/W circulation

Port Raw water manifold

“R/W tree”

Engine Room o/b of port engine

Raw water Engine room R/W circulation

Stbd Raw water manifold

“R/W tree”

Engine Room o/b of stbd engine

Raw Water Engine room R/W supply

Port deicing fittings & adapters

Engine Room @ BHD

Raw Water Engine room R/W supply

Stbd deicing fittings & adapters

Engine Room @ BHD

Raw Water HVAC HVAC supply piping between strainer and pumps

Auxiliary Machinery

Space

Ventilation Forepeak ventilation Forepeak vent box Fwd main deck

Ventilation F/O tank ventilation F/O tank vent box Port recess deck, fwd

APM ANSWER: Table I with the valves listed should have been placed on the spec. Rev-1 will not be issued.

Question 9: WORK ITEM 22: 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 in kind

Question 10: WORK ITEM 22: 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: Yes PE/COR will request as GFE if they cannot be overhauled.

Question 11: WORK ITEM 28: Interior Hull Insulation, Renew

TABLE 1- HULL INSULATION

ITEM DESCRIPTION LOCATION APPROXIMATE

SQFT.

Hull Insulation Engine Room 275 sq. feet

Question:

Are we just renewing the insulation in the entire engine room and not the sound board tiles on bulkhead 5?

If they are to be replaced, and if they are in good condition, can we reuse them?

APM Answer: Yes if they are in good condition you can reuse the soundboards.

Question 12: WORK ITEM 33: 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-SP3 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: The SSPC-SP3 surface prep called out is for painted steel surfaces, not aluminum, this should be a

SSPC-SP11, like one’s we have completed on all of our other previous contracts. 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.

Are we to use the SSPC-SP11 profile, and is a Nace inspector really needed?

APM Answer: Yes use SSPC-SP11 and a Nace inspector is not required.

Question 13: WORK ITEM 34: 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?

APM Answer: Inspect valve during inspection, and if it needs to be renewed submit CFR