855-810-02-0 Welding Schedule.pdf

PDF 189 KB Posted

Attached to
MI Dept. of Natural Resources-New Fisheries Research Vessel
Solicitation number
RFP - 751 - 240000000319
Issued by
Ingham County, Lansing City, Michigan

About this file

The provided document is a Welding Schedule that details the welding requirements for a 66 ft Fisheries Research Vessel being procured by the Michigan Department of Natural Resources (MI DNR). The welding requirements are based on the ABS Rules for Building and Classing Steel Vessels under 90 Meters (295 Feet) in Length, and cover areas such as the hull, decks, bulkheads, frames, girders, and foundations. The document provides specific details on weld types, sizes, and spacing for various vessel components.

The related state and local contract opportunity is for the build-out of the new 66 ft Fisheries Research Vessel for the MI DNR. The procurement is open to qualified shipyards, with bids due by 3:00 p.m. Eastern on February 29, 2024. The MI DNR will evaluate all responsive and responsible bids based on qualifications, experience, price, and the proposed completion timeline, as they are willing to consider alternate timelines beyond the requested one-year timeframe. An addendum has been issued that extends the bid due date and provides clarification on the completion date requirements.

View the file

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Text version

No.: By: Date:

0 OS 20-Nov-23

DRAWN BY:

OS

DATE:

20-Nov-23

PROJECT: DWG. #: SHEET: REV.: SCALE:

855 855-810-02 1 of 4 0 N/A

REVISIONS:

Release for Design Package

RESEARCH VESSEL

TITLE:

WELDING SCHEDULE

15515 Starling Crossing Dr

Lithia, FL 33547

(813) 654-9800

VESSEL NAME:

GENERAL NOTES

8) All welding not called out in this schedule or on structural plans shall be double continuous with a fillet size 75% of the thinner material joined or 0.14", whichever is greater.

Oiltight and watertight connections, including decks Connections in foundations and supporting structures for machinery All connections in way of the steering gear arrangement Connections in way of stabilizers and thrusters All connections in a region above the propeller extending in a radius of 3'-6" from the Centerline girder (CVK) to bar keel Inside painted tanks (fresh water, grey water and black water)

4) Unbracketed stiffeners of shell, watertight and oiltight bulkheads and house fronts are to have double continuous welds for one-tenth of their length at each end.

5) All intermittent welding shall be staggered.

7) Double continuous welding is required in all of the following connections:

1) All welding to be in accordance with ABS "RULES FOR BUILDING AND CLASSING STEEL VESSELS UNDER 90 METERS (295 FEET) IN LENGTH", Latest Edition, Section 16 (Table 1).

2) Where beams, stiffeners, frames, etc. are intermittently welded and pass through slotted girders, shelves or stringers, there is to be a matched pair of 3" intermittent welds on each side of such intersection and the beams, stiffeners and frames are to be efficiently attached to the girders, shelves and stringers.

3) For butt joints where the difference in thickness between plates exceeds 1/8" on either side, the thicker plate shall be tapered with a minimum 3:1 taper.

6) Welding of frame brackets to frames, decks and inner bottom shall be double continuous with a fillet size 75% of the thinner material joined or 0.14", whichever is greater.

ABS Steel Vessels under 90m 3-2-16/Table 1

S.I. = D.C. = s = Spacing of welds l = Length of fillet weld

Member tp tp s l Fillet Size Type

(in) (in) (in) (in) (in)

STEEL

Floors, Bottom Transverses, and Bottom Longitudinal Girders to Shell Center keelson 5/16" 0.3125 - - 1/4" D.C.

Aft peak 5/16" 0.3125 6 3 1/4" D.C.

Machinery Space 5/16" 0.3125 10 3 1/4" S.I.

Flat of Bottom FWD 5/16" 0.3125 10 3 1/4" S.I.

Elsewhere 5/16" 0.3125 12 3 1/4" S.I.

Center Girder

In way of engine and to shell or bar keel 5/16" 0.3125

1/4" D.C.

Clear of engine 5/16" 0.3125 6 3 1/4" S.I.

Watertight or oiltight to inner bottom, rider plate, shell or bar keel 5/16" 0.3125 - - 1/4" D.C.

Intercostals To shell on flat bottom fwd 5/16" 0.3125 - - 1/4" D.C.

Clear of engine 5/16" 0.3125 6 3 1/4" S.I.

Watertight and oiltight periphery connections of longitudinal girders in double bottom

5/16" 0.3125 1/4" D.C.

Frames To shell in aft peaks 1/4" 0.25 - - 3/16" D.C.

To shell for 0.125L forward 1/4" 0.25 - - 3/16" D.C.

To shell elsewhere 1/4" 0.25 12 2.5 3/16" S.I.

Longitudinals to shell 1/4" 0.25 12 2.5 3/16" S.I.

Longitudinals to shell on flat of bottom forward 1/4" 0.25

3/16" D.C.

Girders and Webs To shell and to bulkheads 1/4" 0.25 8 2.5 3/16" S.I.

To bulkheads or decks elsewhere 1/4" 0.25 - - 3/16" D.C.

Webs to face plate where area of face plate is less than 10 sq. in. 1/4" 0.25 10 2.5 3/16" S.I.

Staggered Intermittent Double Continuous exceeds 10 sq. in. 1/4" 0.25 - - 3/16" D.C.

Bulkheads Swash bulkheads 1/4" 0.25 8 2.5 3/16" S.I.

Nontight structural bulkheads 1/4" 0.25 9 2.5 3/16" S.I.

Deep tank or Watertight bulkheads 1/4" 0.25 - - 3/16" D.C.

Stiffener to deep tank bulkhead 1/4" 0.25 12 2.5 3/16" S.I.

Stiffeners to ordinary watertight bulkheads and deckhouse fronts

1/4" 0.25 12 2.5 3/16" S.I.

Stiffeners to nontight structural bulkheads; stiffeners on deckhouse sides and after ends 1/4" 0.25 12 2.5 3/16" S.I.

Stiffener brackets to beams, decks, etc. 1/4" 0.25 - - 3/16" D.C.

Decks Peripheries of platform decks and nontight flats Upper Weld 1/4" 0.25 - - 3/16" Continuous Lower Weld 1/4" 0.25 12 2.5 3/16" S.I.

Peripheries of strength decks, exposed decks, and all watertight or oiltight decks, tunnels and flats

1/4" 0.25 - - 3/16" Continuous

Beams (transverse or longitudinal) to decks

1/4" 0.25 12 2.5 3/16" S.I.

Beams knees to beams and frames 1/4" 0.25 - - 3/16" D.C.

Hatch coamings to exposed decks 1/4" 0.25 - - 3/16" D.C.

Transverses or deep beams to decks in tanks

1/4" 0.25 8 2.5 3/16" S.I.

Transverses or deep beams to decks elsewhere

1/4" 0.25 - - 3/16" D.C.

Foundations

To top plates, shell or inner bottom for main engines and major auxiliaries

5/16" 0.3125 - - 1/4" D.C.

To top plates, shell or inner bottom for boilers and other auxiliaries

5/16" 0.3125 - - 1/4" D.C.

ABS Aluminum Vessels 30-23/Table 30.5

Member tp tp Fillet Size Type

(in) (in) (in)

ALUMINUM

Floors, Bottom Transverses, and Bottom Longitudinal Girders to Shell Center keelson 5/16" 0.3125 7/32" D.C.

Aft peak 5/16" 0.3125 1/4" D.C.

Flat of Bottom FWD 5/16" 0.3125 7/32" D.C.

Elsewhere 5/16" 0.3125 7/32" D.C.

Machinery Space 5/16" 0.3125 7/32" D.C.

Center Girder In way of engine and to shell or bar keel 5/16" 0.3125 7/32" D.C.

Clear of engine 5/16" 0.3125 1/4" D.C.

Watertight or oiltight to inner bottom, rider plate, shell or bar keel

5/16" 0.3125 7/32" D.C.

Intercostals To shell on flat bottom fwd 5/16" 0.3125 1/4" D.C.

Clear of engine 1/4" 0.2500 3/16" D.C.

Frames To shell in aft peaks 1/4" 0.25 1/4" D.C.

To shell for 0.125L forward 1/4" 0.25 7/32" D.C.

To shell elsewhere 1/4" 0.25 3/16" D.C.

Longitudinals to shell 1/4" 0.25 3/16" D.C.

Longitudinals to shell on flat of bottom forward 1/4" 0.25 7/32" D.C.

Girders and Webs To shell and to bulkheads 1/4" 0.25 7/32" D.C.

To bulkheads or decks elsewhere 1/4" 0.25 7/32" D.C.

Webs to face plate where area of face plate D.C.

is less than 10 sq. in. 1/4" 0.25 3/16" D.C.

exceeds 10 sq. in. 1/4" 0.25 7/32" D.C.

Bulkheads Swash bulkheads 1/4" 0.25 7/32" D.C.

Nontight structural bulkheads 1/4" 0.25 7/32" D.C.

Deep tank or Watertight bulkheads 1/4" 0.25 3/16" D.C.

Stiffener to deep tank bulkhead 1/4" 0.25 3/16" D.C.

Stiffeners to ordinary watertight bulkheads and deckhouse fronts

1/4" 0.25 3/16" D.C.

Stiffeners to nontight structural bulkheads;

stiffeners on deckhouse sides and after ends 1/4" 0.25 3/16" D.C.

Stiffener brackets to beams, decks, etc. 1/4" 0.25 3/16" D.C.

Decks Peripheries of platform decks and nontight flats 1/4" 0.25 3/16" D.C.

Peripheries of strength decks, exposed decks, and all watertight or oiltight decks, tunnels and flats

1/4" 0.25 3/16" D.C.

Beams (transverse or longitudinal) to decks 1/4" 0.25 3/16" D.C.

Beams knees to beams and frames 1/4" 0.25 3/16" D.C.

Hatch coamings to exposed decks 1/4" 0.25 1/4" D.C.

Transverses or deep beams to decks in tanks 1/4" 0.25 3/16" D.C.

Transverses or deep beams to decks elsewhere 1/4" 0.25 1/4" D.C.

Foundations To top plates, shell or inner bottom for main engines and major auxiliaries

5/16" 0.3125 1/4" D.C.

To top plates, shell or inner bottom for boilers and other auxiliaries

5/16" 0.3125 7/32" D.C.

TITLE
General Notes
Steel
Aluminum

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