Sol._70Z04019QP30461_A00005_(cont).pdf

Sol No. 70Z04019QP3046100

A00005 (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: 3.3 is a suggestion on how to bid, this is always been part of the package.

Please use the Type/Grade in accordance with the prints.

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 4: Hull Plate, Renew

1.1 Intent. This work item describes the requirements for the Contractor to crop out and renew hull plating. See table 1 for identified items required plate renewal

TABLE 1- HULL PLATE, RENEW

ITEM DESCRIPTION LOCATION APPROXIMAT

E SQFT.

Heavy pitting/corrosion forward under both main diesel engines. Crop and renew

Engine room 10 sq. feet

Numerous pits on the centerline of the engine room ranging from 0.6 to 0.8 inch. Crop and renew

Engine room 20 sq. feet

Heavy pitting/corrosion under both propulsion shafts bearing and outboard of reduction gears. Crop and renew

Engine room

SHOULD THIS BE SURVIVORS

COMPARTMENT AND SHAFT SEALS?

8 sq. feet

Question:

Location number 3 I believe should be in the Survivors Compartment and should be under the shaft seals not the bearings, is that correct?

APM ANSWER: Yes

Can these work items be completed without removing the Red Gears, and if they are to be removed will this be a change request?

Are there pictures available for the repair areas?

APM Answer: No

Question 4 : WORK ITEM 4: Hull Plate, Renew

3.2.2 Ultrasonic thickness (UT) measurement. The Contractor shall take a total of 100 UT measurements of the hull plating in locations designated by the Coast Guard Inspector, in accordance with SFLC Std Spec 0740. Perform a UT inspection of the affected plating beyond the areas described in paragraph 3.2 to determine the boundary of sound material.

Chalk out the boundary of the corroded plating where the remaining thicknesses are less than

75% of the original thickness as shown on Coast Guard Drawing

47B-MLB 110-500. Submit a CFR.

Question: Are these UT shots covered under D-2 or addition to?

APM ANSWER: All UT shots will be covered under D-002. 100 total, do not bid on the additional

100 UT shots

Question 5: WORK ITEM 4: Hull Plate, Renew

3.2.4 Pre-welding requirements. The Contractor shall follow the DDEC disconnect procedures in accordance with Textron Service Bulletin 001(Pre Welding Requirements) as listed in Coast Guard Technical Publication 3355, prior to any welding.

Question: Is this work being completed by USCG personnel as per SFLC 0000?

APM Answer: DDEC disconnect procedures will be handled by Coast Guard members.

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

3.2.2.1 Underwater hull. The hull bottom shall not be painted except for an area directly above the propellers. Paint shall be applied from the aft edge of each strut to the transom between the inboard and outboard engine girders (for a total of 31.0” between the girders) with the system specified for “U/W Body and Boot-Top, Aluminum Hull (in waters with limited fouling)” in SFLC Std Spec 6310, Appendix A (Cutter and Boat Exterior Painting

Systems).

Question: I always feel this is a trick to see if contactors really read the contracts. Since this is not a Great Lakes boat, you do want the entire underwater body sand blasted and painted accordingly, correct?

3.2.2.1 Prepare and coat the U/W hull surfaces with the system specified for “Underwater (U/W) Body and

Boot-Top (U/W Body and Boot-Top, Aluminum Hull), Option I”, in SFLC Std Spec 6310, Appendix A (Cutter and Boat Exterior Painting Systems).

Question 8: WORK ITEM 7: 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 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.

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 9: WORK ITEM 8: Tanks (Mp Fuel Service), Clean And Inspect

3.1.4.2 Stow all fluids in suitable stowage facility, immediately after removal, and re-stow all tank contents, upon completion of work. Contractor shall ensure fuel quality is maintained throughout all stages of the process

4.1 Tank content removal. The Ship’s force will pump down the tanks to the maximum extent possible with the installed pumping system.

4.2 Tank content restoration. The Ship’s force will procure new fluids and refill all tanks at the appropriate time.

APM ANSWER: Note: 4.1 and 4.2 should have been deleted.

3.1.4.1 The Contractor shall remove up to a total of 373 gallons of diesel fuel. Document a complete chain of custody record of the removed tank contents from the vessel to the point of final destination or delivery. Submit document to the COR upon completion of work.

Question: Is this correct, and then is Work Item 22 being eliminated?

APM ANSWER: No, 3.1.4.2 Stow all fluids in suitable stowage facility, immediately after removal, and re-stow all tank contents, upon completion of work. Contractor shall ensure fuel quality is maintained throughout all stages of the process.

Question 10: WORK ITEM 12: Propulsion Shaft, Remove, Inspect, and

Install

MTI

ITEM

DESCRIPTION

NSN/PN

QTY

ESTIMATED COST

N

Shaft Seal(3-3/4”)

NSN: 2040-01-

627-

2 ea.

Question: Listed above is the usual shaft seal GFE that has always been listed, was this forgotten?

APM Answer: Yes the GFE was accidently left off. USCG Project Manager will work with Coast

Guard Supply and make sure that new 3 ¾ Shaft Seals are provided as GFE

Question 11: WORK ITEM 15: 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.

3.2.2 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?

Question 12: WORK ITEM 17: 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

MM

LONG

1/435

053-D

RAM BLOCK TO

PORT

RAM FITTING 335

MM LONG

1/335

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

APM Answer: These Steering hoses will be contractor supplied.

Question 13: WORK ITEM 20: 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: Are we to renew fasteners with in-kind materials, not nickel-copper alloy?

APM ANSWER: YES,

Question 14: WORK ITEM 20: 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?

APM Answer: This is an error in the Specification that was not caught, If the Contractor submits a CFR stating that Strainers cannot be overhauled. USCG will provide new strainers as

GFE. Just bid for Overhaul.

Question 15: WORK ITEM 21: 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?

APM ANSWER: YES

Question 16: WORK ITEM 26: Window, Renew

3.4.1 Install the new window(s) using new hardware, new fasteners, new gasket(s) and new sealant(s).

Question: Are we to use the sealant call out in the blue print, not 5200, correct?

Question 17: WORK ITEM 30: Interior Hull Insulation, Renew

TABLE 1- HULL INSULATION

ITEM DESCRIPTION LOCATION APPROXIMATE

SQFT.

Hull Insulation Engine Room 275 sq. feet

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

Can we reuse the tiles, on BLKHD 5, if they are to be replaced, if they are in good condition?

APM ANSWER: Renewing just the engine room insulation.

Question 18: WORK ITEM 35: Main Diesel Engine, Remove And Install

1.1 Government-furnished property.

MTI ITEM

DESCRIPTION

NSN/PN QTY ESTIMATE

D COST

($/UNIT)

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

P/N: 47-SPG-1

1 ea. 114.50

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?

Question 19: WORK ITEM 37: Bilge Preservation, Auxiliary Space

TABLE 1 - PAINT SCHEDULE 47 MLB

INTERIOR

SURFACES

TO BE

PRESERVE

D

SURFACE

PREPARATION

COATIN

G

SYSTE

M

DFT

(MIL

S

COLOR

FED STD

COLOR

Auxiliary Space Bilge (FR8-

10) outboard to the longitudinal girders.

POWER TOOL

CLEANING

PER SSPC-SP11 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: 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.

Is a Nace inspector really needed?

APM ANSWER: SSPC-SP11 surface prep is to be used and a Nace inspector is not required for coating the

Aux Space Bilge.

Question 20: “D-004 Hull Renew

-The specs do not state what frames will be effected. Can you specify which frame numbers are anticipated to be in the renewed area?”

APM: Respone: Between frame 5 and 7

Question 21: D-001 - General Welding

Any pictures of the repair areas available?

"Replace missing louvers for the engine room"

- How many louvers are missing?

APM Response: 1

"Repair crack on forepeak vent. For additional work submit CFR."

-What additional work is anticipated? Does this mean the crack repair is only with a CFR?

APM Response: Repair the crack but check the surrounding area for other damage.

Question 22: D-004 Hull Plate, Renew

-Please clarify the 3rd item on Table 1. Should this read "under both shaft bearings and outboard of reduction gears"?

APM Response: Yes

-3.2.2 Ultrasonic thickness UT measurement

The UT inspection on D-002 will cover this area. Do you want 100 additional shots for just this location?

APM Response: No.

Question 23: D-026 Window, Renew

1.1 Please clarify - Is the intent to remove, inspect, and reinstall all windows, but only renew the port aft window?

APM Response: Yes