A21 - Encl-13_702-D325-01-0_SEACHEST ARRANGEMENT and DETAILS_marked up.pdf

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Murden Shipyard Repair Services
Solicitation number
W912PM25Q0009
Issued by

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This is a technical engineering drawing showing seachest arrangement and details for a shallow draft dredge vessel, prepared by Bristol Harbor Group for the Army Corps of Engineers Marine Design Center's Wilmington District. The drawing contains detailed specifications and diagrams for piping systems, including globe valves, stop valves, and gate valves with associated material specifications (ASTM A182, ANSI B16.5, etc.).

The drawing includes a plan view of the machinery room and hold area showing seachest arrangements, along with detailed technical drawings of sea chest penetrations, strainer baskets, and associated components. Specific technical details include dimensions, bolt patterns, material callouts, and assembly specifications for components like the strainer basket (specified as 90-10 CUNI) and various flanged connections. This appears to be sheet 702-D325-01-0 of a larger set of engineering drawings for vessel modifications or construction.

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5S 5S

5S 5S

MARINE DESIGN CENTER

DEPARTMENT OF THE ARMY

CORPS OF ENGINEERS

BRISTOL HARBOR GROUP

103 POPPASQUASH RD, BRISTOL, R.I. 02809

TEL: (401) 253-4318 ~ FAX: (401) 253-2329

www.bristolharborgroup.com

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PLAN 5-A, HOLD

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PORT SEACHEST

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STBD SEACHEST

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%%UMACHINERY ROOM P/S

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UP

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UP

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VL

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VL

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VL

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VL

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VL

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VL

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VL

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AutoCAD SHX Text 702-D325-01

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REVISION:

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DATE

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BY

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CKD

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REVISIONS

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SYM

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SHEET:

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RESERVATIONS

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GENERAL NOTES

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AutoCAD SHX Text 702-D670-01

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FILLS, VENTS & SOUNDINGS SYSTEMS

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VESSEL:

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SCALE:

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TITLE:

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DESCRIPTION

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NO.

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DWG NO.

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DWG REV

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DWG NO:

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PROJECT:

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SIZE:

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WILMINGTON DISTRICT SHALLOW DRAFT DREDGE

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SEACHEST ARRANGEMENT & DETAILS

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BHGI APP'D:

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DATE:

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CHECKED:

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DRAWN:

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WAJ

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DATE:

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DATE:

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04FEB10

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CONRAD APP'D:

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DATE:

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GWB

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04FEB10

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FIRE MAIN SYSTEM

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GLOBE VALVE, STOP VALVE

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PIPING SYMBOLS

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GATE VALVE

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1. ALL WELDING, MATERIALS AND WORKMANSHIP SHALL BE IN ACCORDANCE WITH "ABS ALL WELDING, MATERIALS AND WORKMANSHIP SHALL BE IN ACCORDANCE WITH "ABS RULES FOR BUILDING AND CLASSING STEEL DREDGES", LATEST EDITION. VESSEL WILL BE CLASSED. 2. PLATE AND SHAPE MATERIALS SHALL BE STEEL ABS GRADE A, ASTM A-36 OR APPROVED EQUAL. SEACHESTS SHALL BE FABRICATED FROM ERW STEEL ASTM A-53 GRADE B, XH SCHEDULE. OUTBOARD OF SEA VALVES, SUCTION AND VENT PIPE SPOOLS SHALL BE FABRICATED FROM ASTM A-312 316L STAINLESS STEEL, SCHEDULE AS NOTED, AND FLANGES SHALL BE STAINLESS STEEL ASTM A-182, SLIP-ON, RAISED FACE, 150#, ANSI B16.5. ALL MATERIALS SHALL BE TO THE SURVEYORS SATISFACTION. 3. PIPE PENETRATIONS THROUGH BOTTOM PLATES SHALL HAVE FULL PENETRATING WELDS. ALL SHELL PLATE PENETRATIONS SHALL HAVE DOUBLER PLATE AS SHOWN. ALL WELDING SHALL BE DOUBLE CONTINUOUS AS SHOWN, TO THE SATISFACTION OF THE ABS SURVEYOR. FIT-UP AND WELDING TO THE SATISFACTION OF THE ATTENDING SURVEYOR. 4. SEA CHEST STRAINER SHALL BE OF BASKET TYPE, FABRICATED FROM 90-10 COPPER NICKEL MATERIAL. NET AREA OF SEA CHEST STRAINER PLATE OPENINGS SHALL BE MINIMUM 1.5 TIMES SEA VALVE AREA (24 SQ IN VS 16 SQ IN) 34.6 SQ IN OPEN AREA ACHIEVED ON BOTTOM PLATE IS ALSO TO BE MAINTAINED ON TOP PLATE AND BASKET). THE BASKET SHALL BE REMOVABLE FOR CLEANING WITHOUT DRY-DOCKING OF VESSEL. THE TOP EDGE OF THE SEA CHEST SHALL BE AT MINIMUM 4'-6" ABOVE BASE LINE. DIMENSION SHALL BE VERIFIED BEFORE CONSTRUCTION OF SEA CHESTS STARTS. 5. SEA CHEST VALVE BODIES TO BE STEEL ASTM A-216 OR DUCTILE IRON ASTM A-395 (ELONGATION MINIMUM 12%). SEA VALVES SHALL BE "POSITIVE CLOSING VALVES". ALL ALL SEA VALVES SHALL BE OPERATED FROM ABOVE THE MAIN DECK BY REACH ROD ARRANGEMENT, AS WELL AS ABOVE THE GRATING LEVEL. ALL SEA VALVES SHALL BE ALL SEA VALVES SHALL BE PROVIDED WITH "OPEN/CLOSED" INDICATOR. 6. VENT & AIRLINES TO BE SCH 80 PIPES IWO SHELL PENETRATIONS. 7. FIELD ADJUST EACH SEA CHEST STRAINER BASKET AND HANDLE ASSEMBLY FOR A SNUG FIT WITHIN EACH SEA CHEST.

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COMPRESSED AIR SYSTEM

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SCREW DOWN STOP CHECK WITH HOSE COUPL.

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JOINTS

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GATE VALVES:

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MATERIAL SPECIFICATIONS

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TAKE DOWN

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FITTINGS

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HULL

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PIPES

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OUTBOARD OF HULL VALVE

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LOCATION:

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INBOARD OF HULL VALVE

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SEE APPLICABLE REFERENCE DRAWING

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TYPE/DESCRIPTION

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ITEM

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MATERIAL SPEC'N

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DESIGN SPEC'N

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ASTM A312

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ANSI B36.10

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SCH 80 SMLS OR ERW

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STAINLESS STEEL

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ASTM A182

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ANSI B16.5

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FLANGE: STAINLESS STL

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SLIP ON, SOCKET, WN

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RAISED FACE, 150#

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SEACHEST

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ASTM A53 GR B

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TYPE S OR E

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ANSI B36.10

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SCH 40 SMLS OR ERW

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CARBON STL, BLACK

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VALVES

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ASTM A395, MIN

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ANSI B16.34/ASME

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FLANGED, 150#

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DUCTILE IRON OR STL

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RISING STEM

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SB61 TRIM, RENEWABLE

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12%%% ELONGATION

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DISC & SEATS

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OR ASTM-A216

B2

B2

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INSTALL AS HIGH AS PRACTICABLE

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DETAIL 13-A SEA CHEST ARRANGEMENT

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LKG AFT (OMISSIONS FOR CLARITY)

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SCALE: 3/4" = 1'-0"

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16" XH PIPE (12" WALL) STEEL ASTM A-53 GR. B

AutoCAD SHX Text 2 12" SCH 80 PIPE STEEL ASTM A-312 316SS W/ 2 " S-O FLANGE, 150# 12" S-O FLANGE, 150# 316SS STEEL ASTM A-182

AutoCAD SHX Text 23 X 12" STEEL PLATE BOLTED LID W/ 16 EA 1"UNC-8 BOLTS & NUTS AND " RUBBER GASKET 316" RUBBER GASKET (SEE DETAIL 15-D)

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2 12" VENT/BLOWDOWN P/S (SEE REF 1 & 3)

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3/4" COMPRESSEDAIR CONNECTION P/S (SEE REF 3)

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SEA CHEST STRAINER BASKET, SEE DET 10-A

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12" PL DOUBLER 28"OD X 16 " ID 12" ID STEEL ASTM A-36

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2" ASTM A-53PIPE & 2" ASTM A-105 3000# COUPLING

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ESTCODE

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12" PL RETAINER 14 3/4" OD X 12" ID STEEL ASTM A-36

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2 " SHAFT ANODE 38" SHAFT ANODE HARBOR X-10A OR EQ

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4" SCH 80 PIPESTEEL ASTM A-312 316SS W/ 4" S-O FLANGE, 150# 316SS ASTM A-182

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SEE DETAIL 13-D

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ELEVATION 12-A

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LKG INBD (OMISSIONS FOR CLARITY)

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SCALE: 3/4" = 1'-0"

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NOTE: STRAINER BASKET TO BE ALL 90-10 CUNI

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TOP PLATE

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ELEVATION

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BOTTOM PLATE

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PLATE BOLTING RING

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14" TOP PLATE

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14" PL

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12" BOTTOM PLATE

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COUPLING

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14" PL STIFFENER

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SEA CHEST BASKET

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58" HOLES ON 1" CENTERS

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1/4 HOLES ON " CENTERS716" CENTERS

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2" THREADED COUPLING

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14" PL STIFFENER

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DETAIL 10-A SEA CHEST STRAINER

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SCALE: 3" = 1'-0"

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DETAIL 13-D SEA CHEST PENETRATION

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SCALE: 3" = 1'-0"

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12" PL DOUBLER

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16" SEA CHEST

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CUNI STRAINER BASKET

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RETAINER

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DETAIL 15-D SEA CHEST TOP

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SCALE: 3" = 1'-0"

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12" PL TOP

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12" PL LIFTING EYE

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12" PL FLG

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GASKET

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16 X 1" BOLT, NUT, WASHER

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3/4"=1'-0" & AS NOTED

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VESSEL:

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DWG NO:

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WILMINGTON DISTRICT SHALLOW DRAFT DREDGE

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SEACHEST ARRANGEMENT & DETAILS

Sheets and Views
702-D325-01-0-SHT 1
702-D325-01-0-SHT 2

File details come from the government source that posted it. Updated .