LNC Clarification Group 2 Amend 0004.docx

N3220520R4091

SECTION SF 30 BLOCK 14 CONTINUATION PAGE

SUMMARY OF CHANGES

SECTION B - SUPPLIES OR SERVICES AND PRICES

The following have been added by full text:

CLARIFICATION RESPONSE GROUP 2

1. SPECIFICATION ITEM NO.: 905 & 907

PARAGRAPH / SECTION NO: 7.5 & 7.4

TITLE: BOW THRUSTER MAINT AND POLISH BOW THRUSTER PROPELLER

QUESTION:

Work item 905 paragraph 7.4 calls to remove propeller, paragraph 7.5 calls to clean and buff propeller.

Work item 907 paragraph 7.3 calls to polish propeller in place, paragraph calls to clean and buff propeller.

It appears that cleaning and buffing of propeller is covered in both work items, please advise if this is to be priced in both work items.

ANSWER:

Work item 907 will be removed / cancelled in its entirety.

2. SPECIFICATION ITEM NO.: 121

PARAGRAPH / SECTION NO:2.1

TITLE: Replace Weather Deck Drains

ANSWER:

What is the question?

3. SPECIFICATION ITEM NO.: 918

PARAGRAPH / SECTION NO: Various

TITLE: TAKE CSI Freeboard Cleaning and Painting (Spot Blast)

The title of the item is “spot blast” but par 7.14 directs to blast the areas identified in 3.1.1 which is the entire freeboard. Are we doing a complete blast or a spot blast? If it is a spot blast what percentage of the area is to be spot blasted? Would these spot blast areas be large areas i.e. 1000 sq ft each or smaller areas of 100 sq ft each? ANSWERWER: Assume 30% of the total surface area will be blasted to SSPC-SP10.

Par 7.14 directs to grit blast (SP-10). Due to the extremely high cost of dust containment would “slurry grit blasting” to an SP-10 followed by a complete pressure wash of the area prior to coating be acceptable? Would a UHP blast followed by a pressure wash to a WJ 2L be acceptable? ANSWER: No. Bid per specs

Par 7.15.1 and 7.15.2 directs to perform chloride test and provides direction on what to do if chlorides levels are high. Can we assume that any additional work (washing, drying, retesting, etc.) would be treated as growth work and subject to a change order? ANSWER: Yes.

Can we assume the vessels ventilation system will be shut down and secured with all louvers and vents closed during the surface preparation and coating work? ANSWER: Ventilation will be secured. Contractor is responsible to verify louvers are close and accomplish 7.7.

Par 7.19 directs to “apply one stripe coat” to the hull welds; please confirm that this is required. ANSWER: Yes

Par 7.19 through 7.21 directs to apply spot coats of OFM. Are we spot blasting or full blasting? If we are spot blasting what percentage of the area is being spot blasted? ANSWER: Spot blast, assume 30% of total surface area. OFM??

ANSWER: see above

4. QUESTION:

Please provide the following reference:

2.1 MSC DWG 526-8498867, Weather Deck and Miscellaneous Drains System Diagram (Marked Up Version)

ANSWER: Correct reference is 526-8194716. Work item revised and drawing will be provided.

5. SPECIFICATION ITEM NO.: 556

PARAGRAPH / SECTION NO:2.1.1

TITLE: Cargo Brine Valve & Piping Replacement

2.1.1 NAVSEA DWG 516-8498752 Rev F, Cargo Refrigeration Secondary Coolant Circulation System Diagram.

ANSWER: 556 is replaced by 554. Correct reference is 516-8194692. Work item revised and drawing will be provided.

5. SPECIFICATION ITEM NO.: 960

TITLE: TAKE CCSI Underwater Hull Cleaning and Painting (Spot Blast)

Par 7.9.2 directs to pressure wash the entire area. Item 901 par 7.1.15 also directs to perform a pressure wash. Are we to bid this as two separate pressure washing evolutions, or can they be combined into one work effort? ANSWER: Yes.

Par 7.9.5 and 7.9.6 directs to perform chloride test and provides direction on what to do if chlorides levels are high. Can we assume that any additional work (washing, drying, retesting, etc.) would be treated as growth work and subject to a change order? ANSWER: Yes

Par 7.9.8 would the spot blast areas be large areas i.e. 1000 sq. ft each or smaller areas of 100 sq. ft each? ANSWER: Contactor is to assume 30% of the total surface area will be blasted to SSPC-SP10/NACE 2.

7. SPECIFICATION ITEM NO.: 021

PARAGRAPH / SECTION NO:2.1.1/ 2.1.2

TITLE: Clean and Gas Free Tanks, Voids, Cofferdams and Spaces

ANSWERWER:

Reference replace with NAVSEA Drawing 801-8388071, Capacity Plan NAVSEA Drawing 801-8195239, Trim & Stability Booklet Both drawing are included in the disk

8. SPECIFICATION ITEM NO.: 106

PARAGRAPH / SECTION NO:Various

TITLE: TAKE CSI Deck House Cleaning and Painting (Spot Blast)

Par 3.1.1 says “defined with the area highlighted, to include both port and starboard, and the aft section”. The front of the house is highlighted but not listed. Is the front of the house included in this item? ANSWER: Fwd, aft port and stbd

Par 3.1.1 does not list any decks to be prepared or coated, can we assume these decks (if omitted) are to be protected from damage and overspray? ANSWER: Decks are not included and should be protected.

Par 5.5 directs bids to reflect “staging” of the work areas. Are we to assume that performing work via JLG type lifts is not allowed and the entire house area must be staged? ANSWER: JLG is allowed.

Par 7.3 directs to pressure wash the entire area. Par 7.8 and 7.8.1 directs to perform an SP-1 with a bio-degradable cleaner (this is accomplished via pressure washing and rinsing). Are we to bid this as two separate pressure washing evolutions, or can they be combined into one work effort? ANSWER: YES. Two separate effort.

Par 7.6 directs to “install environmental protection including encapsulating area to be coated”. Is the intent to erect a weather tight shelter over the entire area and provide heaters / air conditioners? Can we assume the vessels ventilation system will be shut down and secured with all louvers and vents closed during the surface preparation and coating work? ANSWER: Yes and yes.

7.8.2, 7.8.2a and 7.8.2b directs to perform chloride test and provide direction if chlorides levels are high. Can we assume that any additional work i.e. washing, drying, retesting, etc. (7.8.2b) would be treated as growth work and subject to a change order? ANSWER: Yes

Par 7.9 directs to spot grit blast (SP-10) select areas. Due to the extremely high cost of dust containment would “spot slurry grit blasting” to an SP-10 followed by a complete pressure wash of the area be acceptable? ANSWER: Contractor shall submit CFR for deviation to the specification during performance of work. Bid per specs

Par 7.9.1 would the spot blast areas be large areas i.e. 10 sq. ft each or smaller areas of 1 sq. ft each? Can we assume they are equally divided as to their degree of difficulty i.e. some angles, some ladders, some deck, some flat house? ANSWER: Assume 30% of the total surface area

Par 7.18.1 directs to apply all coating via airless spray painting. Could the spot coats (paragraphs 7.15 and 7.16 be applied by brush and roll application (with the required milage achieved) as to allow spot coating of areas during the blasting process? ANSWER: Stripe coats by brush only. Others spray.

ANSWERWER:

9. SPECIFICATION ITEM NO.: 530

PARAGRAPH / SECTION NO:2.6

TITLE: Crane Modifications to Permit Personnel Handling (T-ALT 451)

2.6 Appleton Marine, Inc. Drawing No. AMD-2693, Personnel Upgrade T-AKE

ANSWER: Attached

10. SPECIFICATION ITEM NO.: 118

TITLE: 01 & 02 Level Forward Deck Houses and Break-Water Preservation

Par 7.8 directs to spot power tool (SP-11) select areas. Due to the extremely high cost of an SP-11 could the contractor either spot UHP water blast or spot slurry grit blast (both followed by a complete pressure wash of the area) and only power tool inaccessible areas? ANSWER: Contractor shall submit condition report for deviation to the specification prior to beginning of work

Par 7.10.2 directs to apply coating in accordance with the manufacturer’s recommendations. Would coating have to be applied via airless spray or could coating be applied by brush and roll application (with the required milage achieved)? ANSWER: Air less spray. Brush only for stripe coats

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