Attachment 7 DWG 2301-3411 Rev F.pdf

ENGINEERING DIVISION, CODE 2370

PUGET SOUND NAVAL SHIPYARD

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REVISION

DWG REVISION SUM.

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SHEETS OF THIS DRAWING WERE COMPOSED USING SOLID EDGE OR SMARTSKETCH.

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3STIC 431

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/S/ J. Kineman 9-17-03

2370.21

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9-17-03

This drawing was last worked on 03/11/2019

/S/ J. Kineman 9-17-03

/S/ M. Schroder 9-17-03

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/S/ N. Florio 9-17-03

Sheet 1 of 3

F2301-3411

Torque-based Proof Test for Safety Hoist Ring Lift Holes and NDT for Lifting Attachments

File name: DWG 2301-3411 Rev F.dft

TOLERANCES

See General Notes.

T orque-based P roof T est for

Safety H oist R ing L ift H oles F

2301-3411

ORIG

DATESIGNATURE

ADC Review

DISTRIBUTION STATEMENT "D": DISTRIBUTION AUTHORIZED TO THE DEPARTMENT OF

DEFENSE AND U.S. DOD CONTRACTORS ONLY FOR ADMINISTRATIVE AND OPERATIONAL USE.

OTHER REQUESTS FOR THIS DOCUMENT SHALL BE REFERRED TO PUGET SOUND NAVAL

SHIPYARD AND INTERMEDIATE MAINTENANCE FACILITY, BREMERTON, WA 98314.

Pc Qty Name Description Specification

1 1 Test bolt Socket Head Cap Screw, UNC-2A or UNC-3A ASTM A574, ANSI B18.3

2 1 Test nut Heavy Hex nut, UNC-2B ASTM A194/A Grade 2H

3 1 Test washer Hardened washer ASTM F436 Type 1 circular

Table 3A Test hardware specification. See General Note 2

Base material (see figure 4B)

Thread Engagement, Table 3B

See Proof Test Procedure, Step B.

Lubricate underside of nut. Do not apply lubrication below this point.

Figure 2B Torque-based proof test arrangement

Added requirement for Certificate of Compliance on test hardware in General Note 2; added test apparatus specifications for 5/16-18 Safety Hoist Rings in Table 3B; corrected table reference for Thread Engagement dimension in Figure 2B

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B Added UNC-3A option to the test hardware specification for the Pc-1 bolt in Table 3A. Clarifying footnote added to Table 3B.

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References

A. NAVSEA TECHNICAL PUBLICATION T9074-AS-GIB-010/271 (TP-271),

(Rev 1), Requirements For Nondestructive Testing Methods

B. MIL-STD-2035A, Nondestructive Testing Acceptance Criteria

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General Notes

1. This drawing provides a torque-based proof test procedure for UNC-2B Safety Hoist Ring (SHR) threaded lift holes and NDT procedure for welded lifting attachments.

2. Torque-Based Proof Test Procedure For Threaded Lift Holes (This applies to a lift point which has no attachment welds, such as that shown in Figures 2B and 4B)

The test applies to the Safety Hoist Rings listed in Table 3B only, and is valid only for lift holes of sufficient thread depth (Table 3B) in base material, the material yield stress of which is greater than or equal to 30,000 psi. The test bolt, nut and washer that comprise the test apparatus must comply with the specifications of Table 3A and with the dimensions of Table 3B for the hole being tested. Certificate of Compliance is required for all test hardware. Before each test, inspect the threads of the bolt and the nut to ensure they are free of lubrication, dirt and debris. Clean as necessary. Inspect threads for signs of distortion or wear. If distortion or wear is detected on any one of the three components of the test apparatus (bolt, nut or washer), obtain a new test bolt, nut and washer for the test.

A. Thread the nut onto the cap screw until the leading surface of the nut is at the required length of thread engagement as listed in Table 3B. The tolerance on thread engagement is –0/+5 % with a minimum tolerance of 1/32 in. (See Figure 2B).

B. Apply fresh Molykote P37 (or equivalent) lubricant to the threads above and starting at the leading surface of the nut (See Figure 2B). Thread the nut fully onto the lubricated threads of the bolt and apply lubricant to the trailing surface of the nut. Do not lubricate the threaded hole.

C. Inspect the lift hole threads for lubrication, dirt and debris. Clean as necessary. Install the proof test assembly (cap screw, nut and washer) into the tapped hole to the required depth of engagement listed in Table 3B.

D. While restraining the cap screw, torque the nut to the torque listed in Table 3B (the tolerance is +5/-0 %).

Re-check the torque on nut;

E. After ten minutes, remove the proof test assembly. In this arrangement, only the portion of the threads on the cap screw that engage the nut is lubricated. The cap screw threads that engage the tapped hole of the component are not lubricated. Remove lubricant (1x visual confirmation of removal required) from the tapped hole surfaces at the completion of proof testing.

F. Perform a visual 1x inspection of the accessible area for damage or deformation. Inspect internal threads for residual lubrication, dirt and debris. Clean as necessary. Inspect threads for signs of damage or deformation. Perform a 2B Go/No-Go gauge check of the lift hole. The No-Go acceptance criterion is that the No-Go gauge does not enter the material more than three complete turns. The threads shall pass a go/no-go gauge check and show no signs of cracks, permanent distortion or other damage.

G. Perform an MT/PT inspection of the base metal in a full circle beginning at the edge of the threaded hole extending out ½ inch (as applicable) per NAVSEA Publication T9074-AS-GIB/010/271(Rev. 1) (Reference A). Use the acceptance criteria of MIL-STD-2035A (Reference B), Class 3 for Welds and Forgings/Wrought Material for Base Metal. Note: MT is applicable to carbon steel, PT is applicable to stainless steel and aluminum).

Table 3B (See Table 3A for test apparatus specifications)

SHR & test thread size / SHR rated load (Lbs.)

Minimum bolt length* General Note2

Thread Engagement Steps A & C

Test torque Step D

5/16-18 UNC / 800 lbs. 1.5 in. 0.54 +0.00/-0.03 in. 84 +4 /-0 in-lbs.

3/8-16 UNC / 1,000 lbs. 1.5 in. 0.54 +0.00/-0.03 in. 12 +1/-0 ft-lbs.

½-13 UNC / 2,500 lbs. 2 in. 0.78 +0.00/-0.04 in. 28 +1/-0 ft-lbs.

5/8-11 UNC / 4,000 lbs 2.25 in. 0.78 +0.00/-0.04 in. 60 +3/-0 ft-lbs.

¾-10 UNC / 7,000 lbs. 2.5 in. 1.03 +0.00/-0.05 in. 100 +5/-0 ft-lbs.

1-8 UNC / 10,000 lbs. 3.25 in. 1.29 +0.00/-0.07 in. 230 +12/-0 ft-lbs.

1 ¼-7 UNC / 15,000 lbs. 3.75 in. 1.89 +0.00/-0.10 in. 470 +24/-0 ft-lbs.

1 ½-6 UNC / 24,000 lbs. 4.5 in. 2.70 +0.00/-0.14 in. 800 +40/-0 ft-lbs.

2-4 1/2 UNC / 30,000 lbs. 5.75 in. 2.96 +0.00/-0.15 in. 1200 +60/-0 ft-lbs.

* Note: Bolt length does not include thickness of the head.

1. Changed General Note 4 to include aluminum.

C/2370.21 Concurrence:

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Revision Description continued on Sheet 3

1. Changed title of DWG and added Sheet 2 to include NDT procedures for welding lifting attachments.

2. Reformatted Notes 1 & 2.

3. Added References A & B.

C/2370.21 Concurrence:

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Sheet 2 of 3

2301-3411 NDT For Lifting and Handling

T orque-based P roof T est for

Safety H oist R ing L ift H oles F

2301-3411

FIGURE 6C:

LIFT LUG TYPE - WELDED LIFTING ATTACHMENT

INSPECT IAW NOTE 3 (OR 4)

FIGURE 5C:

LIFT BLOCK TYPE - WELDED LIFTING ATTACHMENT

INSPECT IAW NOTES 3 (OR 4) AND 2.F.

FIGURE 4C:

LIFT BLOCK TYPE (WITH SHOULDER)

- WELDED LIFTING ATTACHMENT

INSPECT IAW NOTES 3 (OR 4) AND 2.F.

SEE NOTES 3B & 4B

THREADED LIFT HOLE

(FOR A SHR)THREADED LIFT HOLE

(FOR A SHR)

NON-THREADED LIFT HOLE

(FOR A SHACKLE)

FIGURE 4B:

THREADED LIFT HOLE - NO ATTACHMENT WELDS

TEST AND INSPECT IAW NOTE 2.

THREADED LIFT HOLE

(FOR A SHR)

OUTER TOE

PERFORM NDT 1/2" PAST

EDGE OF THREADED LIFT

HOLE PER NOTE 2.G

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General Notes (continued from Sheet 1)

3. NDT Requirements For Carbon Steel Welded Lifting Attachments, inspect per the following:

A. Prior to and after the load test, perform a visual inspection of the attachment welds of each lift lug/block, accessible base metal of each lift lug/block, and top surface of plate above the lift block shoulder (if shoulder feature such as shown in Figure 4C is present). Ensure no apparent deformation, cracks, or other apparent damage of these load bearing parts.

B. Prior to and after the load test, the attachment welds of each lift lug/block, accessible base metal of each lift lug/block, and top surface of plate above the lift block shoulder (if shoulder feature such as shown in Figure 4C is present) extending outward to the outer toe of the lift block weld below shall be Magnetic Particle (MT) inspected per NAVSEA Publication T9074-AS-GIB-010/271 (Reference A). Use the acceptance criteria of MIL-STD-2035 (Reference B), Class 3 for Welds and Forgings/Wrought Material for Base Metal. This inspection shall include the inside of the non-threaded lift lug hole, as shown in Figure 6C. NDT of threaded safety hoist ring (SHR) holes shall be performed IAW General Note 2.F of this drawing. For a lift block with a shoulder feature such as shown in Figure 4C, the bevel weld at the top surface is not considered load-bearing and will not require NDT.

C. Load test requirements shall be IAW parent manufacture drawing.

4. NDT Requirements For Stainless Steel (or Aluminum) Welded Lifting Attachments, inspect per the following:

A. Prior to and after the load test, perform a visual inspection of the attachment welds of each lift lug/block, accessible base metal of each lift lug/block, and top surface of plate above the lift block shoulder (if shoulder feature such as shown in Figure 4C is present). Ensure no apparent deformation, cracks, or other apparent damage of these load bearing parts.

B. Prior to and after the load test, the attachment welds of each lift lug/block as well as the accessible base metal of each lift lug/block, and top surface of plate above the lift block shoulder (if shoulder feature such as shown in Figure 4C is present) extending outward to the outer toe of the lift block weld below shall be Liquid Penetrant (PT) inspected per NAVSEA Publication T9074-AS-GIB-010/271 (Reference A). Use the acceptance criteria of MIL-STD-2035 (Reference B), Class 3 for Welds and Forgings/Wrought Material for Base Metal. This inspection shall include the inside of the non-threaded lift lug hole, as shown in Figure 6C. NDT of threaded safety hoist ring (SHR) holes shall be performed IAW General Note 2.F of this drawing. For a lift block with a shoulder feature such as shown in Figure 4C, the bevel weld at the top surface is not considered load-bearing and will not require NDT.

C. Load test requirements shall be IAW parent manufacture drawing.

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Sheet 3 of 3

NDT For Lifting and Handling

2301-3389-1

T orque-based P roof T est for

Safety H oist R ing L ift H oles F

2301-3411

Revision (continued from Sheet 1)

SYM BY DATECHKDATE DESCRIPTION APPROVAL

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1. Updated References to reflect their lastest revisions.

2. Added Sheet 3 to make room for Revision Block.

3. Moved Revision Block from Sheet 2 to Sheet 3.

1. Incorporated new requirement to perform NDT inspection ½” past the edge threaded lift holes.

Change resulted in adding Note 2.G and revising Figure 4B.

2. Revised Figure 4C, Note 3 & Note 4 to reflect new NDT policy for lift attachment lugs/lift blocks with shoulders.

C/2370.21 Concurrence:

/s/ Mark E. Young 1/17/17

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