Drawing_2370B0000073.pdf

REVISION HISTORY

REV DESCRIPTION DATE APPROVED

A

4 3 2 1

PORTSMOUTH NAVAL SHIPYARD

NUCLEAR REFUELING ENGINEERING DIVISION

CODE 2370 - KITTERY, ME

DRAWING NO. RF # REV

TITLE

SCALE WEIGHT SHEET

SIGNATURE DATE

SUPV.

PEER.

ORIG.

APPROVAL/CONCURRENCE

CODE SIGNATURE DATE

DECIMAL TOLERENCES:

X.X = ± 0.1

X.XX = ± 0.01

X.XXX = ± 0.005

X.XXXX = ± 0.0005

FRACTIONS: ± 1/32

ANGLES: ± 0.5º

UNLESS OTHERWISE SPECIFIED,

DIMENSIONS ARE IN INCHES.

DRAWING DIMENSIONAL &

GEOMETRIC TOLERENCES

PER ASME Y14.5-2009

THIRD ANGLE PROJECTION

B

C

A

B

C

3 2 14

SIZE

BODY, LOWER TUBE SHIELD

RF-6577

SHEET 1 OF 1

B

NEXT HIGHER ASSY:

2370B0000073 ORIG

2370B0000071

PART NO. TITLE

NOMINAL PIPE

SIZE

THICKNESS, T

HEIGHT

"H"

SHIELD

COVERAGE

(DEGREES)

INNER

DIAMETER, ID

(REF)

2370B0000073�1

INNER BODY, LOWER

TUBE SHIELD

6.000 0.50 8.500 360.00 6.625

2370B0000073�2

MIDDLE BODY,

LOWER TUBE SHIELD

7.000 0.50 8.250 360.00 7.625

2370B0000073�3

OUTER BODY, LOWER

TUBE SHIELD

8.000 0.50 8.000 270.00 8.625

WEIGHT

(LBS)

(24.046)

(26.618)

(21.758)

NOTES:

1. MATERIAL: SILFLEX TUNGSTEN PIPE SHIELDING WITH NO OVERLAP (NATURAL COLOR, NO STRIPE, NO LABEL), OR APPROVED EQUIVALENT. PIPE WRAP SHALL BE OF SUFFICIENT DUROMETER THAT IT IS CAPABLE OF MAINTAINING ITS SHAPE WHEN STANDING ON END ON A FLANGE OF A VERTICALLY RUNNING PIPE OF THE DESIGNATED NOMINAL SIZE. EQUIVALENT MATERIALS REQUIRE PORTSMOUTH NAVAL SHIPYARD CODE 2370 ENGINEERING APPROVAL, INCLUDING SUBMISSION OF SAMPLE MATERIAL

FOR EVALUATION. MINIMUM MATERIAL REQUIREMENTS INCLUDE THE FOLLOWING:

A. MATERIAL SHALL BE NON-HAZARDOUS FOR HANDLING AND DISPOSAL.

B. SHIELDING EFFECTIVENESS: 1" THICKNESS OF MATERIAL SHALL ATTENUATE AT LEAST 60% OF

GAMMA RADIATION EMITTED FROM A COBALT-60 SOURCE.

C. MATERIAL DENSITY SHALL BE 0.26 POUNDS PER CUBIC INCH OR LESS.

D. MATERIAL SHALL BE FLEXIBLE, WITH SPLIT SEAM IN 360 DEGREE WRAP, TO ALLOW FOR

INSTALLATION OVER THE STANDARD NOMINAL PIPE SIZE INDICATED.

2. CLEANLINESS REQUIREMENTS: ALL ACCESSIBLE SURFACES SHALL BE VISIBLY FREE OF CUTTING FLUID, TAPE RESIDUE, MACHINE CHIPS, GREASE, OIL, FLUX, DIRT, GRIT, SCALE, RUST, SMEARED

METAL OR OTHER FOREIGN MATERIAL.

3. PACKAGING REQUIREMENTS: INDIVIDUALLY PACKAGE IN CLEAN, SEALED POLYETHYLENE OR

POLYVINYLCHLORIDE ENVELOPES OR WRAPPINGS, AT LEAST 0.004 INCHES THICK (0.006 INCHES

NOMINAL) AND PIGMENTED GREEN. ENVELOPES/WRAPPINGS SHALL BE EITHER HEAT SEALED

(PREFERRED) OR SEALED WITH TAPE.

4. PACKING REQUIREMENTS FOR SHIPMENT:

A.ITEM PACKAGES SHALL BE CUSHIONED, BLOCKED, BRACED AND/OR ANCHORED IN CONTAINERS IN ACCORDANCE WITH GOOD COMMERCIAL PRACTICE, TO PREVENT ITEM AND CONTAINER DAMAGE.

B. WOODEN BOX(ES) OR SPECIALLY DESIGNED CONTAINER(S) SHALL BE USED. USE OF

CARDBOARD BOXES IS PROHIBITED FOR THE OUTER SHIPPING CONTAINER.

1:4 SEE TABLE

PART -1, -2

(360v WRAP)

H u 0.06

SPLIT SEAM

ID

(REF)

T

/S/ J. WILSON 3/29/18

PART -3

(270v WRAP)

90°

T

ID

(REF)

/S/ A. O'HARE

/S/ R. KNIGHT

4/2/18

4/5/18

NNS /S/ T. LITTLEY 4/5/18