52000PR220016340 Anchor Windlass Overhaul Specification SOW 2.doc

WORK ITEM 1: Anchor Windlass, Overhaul

PR NR 52000PR220016340

1. SCOPE

1.1 Intent. This work item describes the requirements for the Contractor to inspect and refurbish the port and starboard anchor windlasses.

1.2 Government-furnished property.

WMEC 210 B Class, Anchor Windlass Model #X-1161, 30/7.5 HP (applicable to 620, 629, and 630).

5, 19, 24, 30, 75, 76, 82

NSN: 5320-01-670-5553

PN: 714603

1AC3-1 Thru 1AC3-4

NSN: 2010-01-670-5013

PN: 711532

PN: 912760

4A-1 Thru 4A-7

NSN: 2010-01-670-5000

PN: 4723532

PN: 912753

PN: 921504

PN: 921505

PN: 1122196

PN: 221351

**New or refurbished equipment that the Government may provide for installation in place of existing equipment.

2. REFERENCES

Coast Guard Drawings Coast Guard Drawing 627 WMEC 581-001, Rev B, Anchor Handling Coast Guard Drawing 627 WMEC 581-003, Rev -, Capstan Windlass Assembly Coast Guard Drawing 627 WMEC 581-005, Rev A, Anchor Windlass Coast Guard Publications Coast Guard Technical Publication (TP) 3240A, Apr 2018, Manufacturer's Instruction Book -SWBS 581, Section D, Anchor Windlass, Model C18L137E Surface Forces Logistics Center Standard Specification 0000 (SFLC Std Spec 0000), 2018, General Requirements Surface Forces Logistics Center Standard Specification 3020 (SFLC Std Spec 3020), 2018, Overhaul AC Electrical Motors In-Shop Surface Forces Logistics Center Standard Specification 5000 (SFLC Std Spec 5000), 2018, Auxiliary Machine Systems Surface Forces Logistics Center Standard Specification 6310 (SFLC Std Spec 6310), 2018, Requirements for Preservation of Ship Structures Other References None

3. REQUIREMENTS

3.1 General. The Contractor shall refer to the Coast Guard Drawings listed under Section 2 (References) for guidance in accomplishing this work.

3.1.1 CIR. The Contractor shall submit a CIR for the inspections listed in the following paragraph:

· 3.2 Work particulars, Task 4

· 3.2 Work particulars, Task 5

· 3.2 Work particulars, Task 6

· 3.2 Work particulars, Task 7

· 3.2 Work particulars, Task 8

· 3.2 Work particulars, Task 9

· 3.2 Work particulars, Task 10

· 3.2 Work particulars, Task 11

3.1.2 Tech Rep.

Not applicable.

3.1.3 Protective measures. The Contractor shall furnish and install all protective coverings to seal off and protect all non-affected vessel's components, equipment, and spaces near the work area against contamination during the performance of work. Upon completion of work, the Contractor shall remove all installed protective measures, inspect for the presence of contamination, and return all contaminated equipment, components, and spaces to original condition of cleanliness.

3.1.4 Interferences. The Contractor shall handle all interferences in accordance with SFLC Std Spec 0000, paragraph 3.3.5 (Interferences).

NOTE

The windlass assembly may be mounted on a bed of chockfast; without a releasing agent, significant effort will be required to remove mounting bolts and break foundation plate from the chockfast material. Chockfast must be renewed, in accordance with manufacturer’s recommendation, upon windlass reinstallation.

3.2 Work particulars. The Contractor shall perform the work described herein in accordance with SFLC Std Spec 5000, SFLC Std Spec 3020, TP 3240A, and using Coast Guard Drawings 627 WMEC 581-001, 627 WMEC 581-003 and 627 WMEC 581-005 as guidance.

Table 1 – Additional requirements

ADDITIONAL REQUIREMENTS

B2.5 (Anchor windlass) Accomplish after repairs.

See paragraph 3.1.11 in Std Spec 5000.

The following tests are required:

Static Load Test (Conditional; see 3.3.1) No Load Test (see 3.3.2) Rated Load Test (see 3.3.3): 4,000 lbs @ 36 fpm Torsion Test, Electric Brake (see 3.3.4):

9,560 lbs Band Brake Test (see 3.3.5):

9,560 lbs Wildcat Operational Test (B2.5.2 of Std Spec 5000) Submit CFR. See paragraph 3.1.1 in Std Spec 5000.

If pier restrictions prohibit testing IAW Std Spec 5000, Contractor shall submit a CFR for an alternative method of proof testing.

3.2.4 (Preservation) Submit A CIR.

3.2.4 (Preservation) Submit A CIR.

3.2.4 (Preservation) Submit A CIR.

3.2.3 (Disassemble and inspect)

3.2.4 (Preservation) Submit A CIR.

Finish coat color: Select to match surrounding surfaces.

Weld joints to NDE: All foundation welds.

3.3 Operational and Weight Test. When referred to in Table above, the Contractor shall accomplish the following procedures for testing. If the Cutter’s deck fittings will be used in the rigging of test weights, ensure that Work Item “Towing Bitts, Chocks, and Fairleads; Inspect and Test” is accomplished prior to rigging test weights.

3.3.1 Static Load Test. If a Change Request has been approved for repair or modification of structural members, the anchor windlass assembly shall be subjected to a static test by placing a loop of line over the capstan head at midheight and 90 degrees to its axis to produce bending moment only. Using the capstan head as a bitt, a load of 31,000 lbs shall be applied and held for a minimum of 10 minutes. Do not operate Anchor Windlass during this test, and do not use the Anchor Windlass to rig test weight into place. Remove the test weight. Verify no permanent deformation or damage to any components.

3.3.2 No Load Test. The anchor windlass assembly shall be run without load at each rated speed for five minutes in each direction to determine that no abnormal heat, wear or noise develops. Note, when brake repair has been accomplished an inspection of brake assembly is to be accomplished after no load test to ensure proper installation.

3.3.3 Rated Load Test. The capstan head of the anchor windlass assembly shall be capable of developing the specified line pull and speed in both directions of rotation. The capstan shall be run at rated load(s) and rated speed(s) for a period of one half hour in each direction. Approved methods of testing include; line and weight, static line arrangement and prony brake (dynamometer). See Figures 1 and 2 for suggested test arrangement.

3.3.4 Torsion Test, Electric Brake. This test is for the electric disk brake. With the band brake set and wildcat disengaged, and with the capstan head rigged as for developing normal line pull each electric disk brake shall be subject to a static test for at least 10 minutes. The load shall be applied using several turns of line around the capstan head to produce a torque with the capstan shaft as the axis. The brake shall hold the load. See Figures 1 and 2 for suggested test arrangement.

3.3.5 Band Brake Test. The Contractor shall select one of the following 2 methods to demonstrate the holding capability of the band brake.

3.3.5.1 With the band brake set, electric disk brake manually disengaged (using TP 3240A as guidance), wildcat engaged, and with the capstan head rigged as for developing normal line pull, each band brake shall be subject to a static test for at least 10 minutes. The load shall be applied using several turns of line around the capstan head to produce a torque with the capstan shaft as the axis. The brake shall hold the load. See Figures 1 and 2 for suggested test arrangement.

3.3.5.2 Alternatively, test the band brake after the anchor and anchor chain are re-installed. With the anchor clear of the hawse pipe, suspend 3,380 lbs (equivalent to 30 fathoms of chain) lashed to the anchor. With the wildcat disengaged, hold the test load for at least 10 minutes.

Figure 1: Test weight rigging

Figure 2: Test weight rigging

4. NOTES

4.1 Paragraph number relationships. The appendix and paragraph number for each appendix and paragraph listed in Section 3 relates directly to the identical appendix and sub-paragraph number in SFLC Std Spec 5000

4.2 Sealant replacement. The 3M #101 black sealant has been replaced by 3M Marine grade silicone sealant, 08029, 1/10 gallon, clear. UPC # 0-51135-08029-0 3M ID: 60980042828.

4.3 Overhaul kit. An overhaul kit is not available for this model anchor windlass.

�Can we remove this or do we need to test the bits before we can use them in this weight test?

�Trying to find out if there is a pier weight restriction and what it is.