Bear SOW.docx

Performance Work Statement USCGC Bear Strain Gauge Alignment Check Scope: This work item describes the requirements for the Technical Representative to perform strain gauge alignment checks prior to vessel dry-docking, during dry-docking, and after refloating.

Date of Service: First visit will be on or around 3/8/25 and the remaining visits TBD based on schedule.

Service work hours: 0700 – 1630 References:

Coast Guard Drawing 901 WMEC 243-001 REV L, Shafting Alignment Coast Guard Drawing 901 WMEC 243-005 REV D Shafting Alignment Analysis and Procs MIL-STD-2199B (SH), Jan 2020, Coverings for Waterborne Main Propulsion Shafting on U.S. Naval Surface Ships and Submarines

Background: The Coast Guard Cutter, Bear will be dry docked at US Coast Guard Yard, 2401 Hawkins Pt. Rd. Baltimore, MD 21226. The POC will be LT Zachary, Velasquez

Requirements:

Tech Rep. The Contractor must provide the services of a Qualified Technical Representative who is familiar with the strain gauge alignment method to accomplish the following on site:

· Advise on manufacturer's proprietary system information.

· Assist with proper alignment, clearances, and repair methods associated with stern tube modification and propulsion shaft system removal and installation.

· Ensure compliance with manufacturer's procedures and standards during system disassembly, inspection, and reassembly as applicable.

Ensure the Tech Rep has experience with the system/equipment stated above and demonstrated on their résumé.

Submit the name and résumé of the Tech Rep to the COR at the Arrival Conference.

Protective measures. The Contractor must furnish and install all protective measures in accordance with SFLC Std Spec 0000, paragraph 3.3.3 (Vessel component, space, and equipment protection).

Interferences. The Contractor must handle all interferences in accordance with SFLC Std Spec 0000, (Interferences). Known interferences include, but are not limited to the following:

Mechanical seal

· Bulkhead seal

· Shaft coating Definitions and standard units. For the purposes of this specification and any reports generated, the following definitions apply.

Optimal alignment. Defined as a state of shaft alignment (through all phases of bearing wear down) where:

Bearing loads are within a satisfactory range

· Bending stresses are minimal

· Gear box bearing loads (Fwd and Aft) always remain positive and are near equal at midlife wear

· Shaft slope through long bearings matches the bearing slope within a reasonable range

· Horizontal loads are minimized

NOTE

“Optimal alignment” is the goal when components are being moved or relocated e.g. foundations altered, chockfast poured, new strut being installed, new stern tube installed, etc.

Acceptable alignment. Defined as a state of achievable shaft alignment where components are constrained (movement/relocations not within work scope) but:

Current bearing loads are within a satisfactory range and if possible, remain satisfactory though continued bearing wear down

· Horizontal loads are minimized Note “Acceptable alignment” is the goal whenever “Optimal alignment” cannot be achieved because the scope of associated work does not provide for relocation of components necessary.

Standard units. All reports, correspondences, and discussions must be in Standard/US Customary Units and not in SI/Metric Units.

Strain gauge alignment check. The Contractor must perform the specified actions in Table 1 below using Coast Guard Drawings 901 WMEC 243-001 and 905 WMEC 243-005 as guidance.

Table 1 - Tasks

3.3.1.2 3.3.1.3 3.3.2 3.3.4 Accomplish prior to drydocking.

3.3.1.2 3.3.1.3 3.3.2 3.3.4 Accomplish prior to drydocking.

3.3.1.1 3.3.1.3 3.3.3 3.3.4 Accomplish after drydocking the vessel and before performing any hot work and/or structural modifications.

3.3.1.1 3.3.1.3 3.3.3 3.3.4 Accomplish after drydocking the vessel and before performing any hot work and/or structural modifications.

3.3.1 3.3.1.1 3.3.1.3 3.3.3 3.3.4 3.3.5.1 3.3.6 Accomplish in drydock after all structural and other shafting repairs and modifications have been completed, and before re-floating the vessel.

3.3.1.1 3.3.1.3 3.3.3 3.3.4 3.3.5.1 3.3.6 Accomplish in drydock after all structural and other shafting repairs and modifications have been completed, and before re-floating the vessel.

3.3.1.2 3.3.1.3 3.3.2 3.3.4 3.3.5.2 Accomplish after re-floating the vessel.

3.3.1.2 3.3.1.3 3.3.2 3.3.4 3.3.5.2 Accomplish after re-floating the vessel.

Shaft alignment check by strain gage method. The Contractor must furnish all necessary equipment and install sufficient strain gages, measure strains, and calculate vertical and horizontal reactions using the strain gage measurement method. Perform the strain gage measurements under the direct supervision of personnel experienced in and regularly engaged in shaft alignment by the strain gage method.

When specified in Table 1, install strain gages internally and externally to measure all internal and external bearing reactions.

When specified in Table 1, install strain gages internally to measure all internal bearing reactions.

All strain gages must remain at the same locations throughout all required inspections. Do not duplicate cost of installation if strain gauges are already installed from previous evolutions.

Alignment check prerequisites, afloat. The Contractor must ensure the following conditions are met for the afloat alignment check:

All shaft components are installed.

Vessel is in the water for at least 24 hours before alignment inspection.

All permanent ballast are in place.

· Fuel, water, and temporary ballast tanks are filled to normal operating levels, generally half to 75% capacity.

· Vessel is on an even keel.

NOTE

It is highly recommended that the Cutter get the pre-dock strain gauge reading done in advance instead of shortly prior to the dry-docking.

· All major machinery weighing over 500 pounds is either installed or simulated by equivalent weights appropriately located

· The shafts must be free to rotate and the stern tube face seal shall not be any tighter than necessary note Small boats are not considered major machinery and therefore do not need to be simulated by equivalent weights in their absence.

Alignment check prerequisites, drydock. The Contractor must ensure the following conditions are met for the in-dock alignment check:

All shaft components are installed.

· The shafts must be free to rotate and the stern tube face seal shall not be any tighter than necessary Strain gauge report. The Contractor must submit a written report of results via CFR with the following information to the COR within 24 hours after alignment check:

All specified (i.e. external and/or internal) bearing reactions

· Deviation from specified bearing reactions in Figure A5.4 of Coast Guard Drawing 901 WMEC 243-005

· A description of the alignment procedures used to obtain the bearing loads

· Strain gauge locations

· Bearing locations and reactions in shaft modeling

· Detail dimensions and configuration of the shaft model

· All mathematics values used in the shaft model such as material properties, spring constant, thermal growth effects, bearing offsets, all concentrated weights, etc

· All assumptions applied in the shaft model

· All constant values used in the shaft model

· Any indication of misalignment

· Any recommended corrective procedures. The recommended corrective procedures must include, but not be limited to:

New bearing off-sets to achieve an Optimal alignment (as defined in 3.2.1)

· Other alternative to achieve an Optimal alignment

· Detailed procedures to achieve shaft alignment

· Table of calculated bearing wear down analysis based on prior strain gauge reports (furnished upon request by COR) Strain gauge report analysis. The Contractor must provide comparative analysis of strain gauge reports as follows. This analysis may be furnished with the Strain Gauge Report described in paragraph 3.3.4.

When specified in Table 1, compare results of the “Strain Gauge Alignment Check, Post Repair” with results of “Strain Gauge Alignment Check, Drydock” and provide analysis, comments and recommendations.

When specified in Table 1, compare the findings of the inboard bearings of the “Strain Gauge Alignment Check, Post Drydock” with the “Strain Gauge Alignment Check, Pre-Drydock” conditions and provide analysis, comments and recommendations.

Shaft coating repair. Prior to re-floating vessel, and after all other shafting repairs, the Contractor must repair areas of the shaft GRP coating damaged in performance of strain gauge mounting and removal in accordance with Appendix B, paragraph B.5.3.2 “Repair of in-depth defects in GRP” of MIL-STD-2199.

After curing, accomplish inspection and spark test in accordance with Appendix B, paragraph B.5.2 of MIL-STD-2199. Submit CFR with results of the spark test.

4. NOTES

4.1 Results submittal. The COR will forward a copy of each strain gauge report to the MECPL Engineering Branch.

CONTRACTOR FURNISHED ITEMS, SERVICES AND RESPONSIBILITIES:

General: The Contractor shall furnish all equipment and services required to perform work under this SOW, other than those explicitly addressed in government furnished services.

The Contractor shall report to the designated work site on the date specified on the written notification by the Contracting Officer in the form of a signed order. No other individual has the authority to direct the Contractor to begin work, other than a warranted Contracting Officer. Pending Coast Guard Yard production schedules, services may be required on an intermittent basis within the period and quantity specified.

Contractor Equipment: vehicles and tanks which holds or can hold hazardous materials that is left on CG Yard premises must have the Contractor’s contact information placed in the driver’s side window indicating the Emergency Contact Number (answered 24/7/365) for the owner/operator of the vehicle. If a tank is left on the premises, the Emergency Contact Number (answered 24/7/365) for the owner/operator of the tank must be painted on the tank in a prominent location. The government will not assume liability for any vehicles/tanks left on CG YARD property. The COR/SS will coordinate the location with the Yard Environmental/Security/Materials Handling.

RAPID GATE SECURITY REQUIREMENTS: Effective September 1, 2016, all contractors and subcontractors performing on this contract/purchase order/task order must utilize the RAPIDGate Program and/or Transportation Worker Identification Credentials (TWIC) if repeat access to the CG Yard is required for seven (7) or more days annually. RAPIDGate manages the non-Common Access Credential (CAC) eligible vendor/contractor companies and their employees who require access to Coast Guard Yard, Baltimore. Vendor/contractor CAC eligibility has been restricted to only those who require physical access to Coast Guard Yard AND logical access to a DoD or DHS network or system.

Vendor/contractor companies that require repeat (7 or more days annually) access to the CG Yard, pay an annual company enrollment subscription to participate in the RAPIDGate Program and an annual employee registration subscription for each employee to participate in the program. The company enrollment fee is waived for sole proprietors. Vendor/contractor companies must be approved by a government sponsor at each DoD and DHS installation where their employees require access. Vendor/contractor employees who are registered, undergo initial and regular vetting and are issued a single credential, which is valid for perimeter access to those DoD and DHS installations where access privileges have been granted. All company enrollments are submitted via the web at www.rapidgate.com and managed by phone or email. Initial employee registrations take place at a Program Registration Kiosk, typically located at participating DoD and DHS Installation Pass & ID Offices. The CG Yard’s Registration Kiosk is located at 2401 Hawkins Point Road, Baltimore, MD 21226, BLDG. 144, Security [brick building adjacent to the main gate]. Credentials will be available for pick-up at BLDG. 144 fourteen (14) days after the employee’s initial registration. Costs incurred for delays at the gate due to the contractor’s failure to comply with this requirement or to provide qualified, authorized personnel will not be reimbursed by the Government. Your tenant sponsor is, the Yard POC or Ship Superintendent listed at the beginning of this document. This sponsor will need a list of individual employee names and DOB’s with your quotation. Any RAPIDGate program questions should be directed to: 1-877-727-4342

General: The Contractor will be required to follow 29 CFR 1915 (OSHA Shipyard Industry Standard), 16 CFR1303, 29 CFR 1910, 29 CFR 1915.1025, 29 CFR 1926.62, 15 U.S.C. 2601, while performing this work at the U.S. Coast Guard Yard.

Safety Equipment: The area where this work taking place requires hard hats, safety harnesses and safety glasses at all times. The Contractor will provide all required personnel safety equipment for their employees, including, but not limited to, safety helmet and safety glasses with side shields. All safety equipment shall meet OSHA standards. The Contractor shall follow all applicable OSHA guidelines and regulations. It is also required that all COVID safety practices are followed.

ISO Qualifications: Contractor shall comply with all the U.S. Coast Guard Yard International Organization for Standardization (ISO) 9001 Quality Management and ISO 14001 Environmental Management Systems. The Contractor may be periodically audited to ensure conformity to these standards. If the contractor fails to perform as specified, the contracting officer may direct that employees be replaced or suspend work.

EMERGENCY SERVICES: The U.S. Coast Guard Yard has 24-hour first aid, spill response and fire protection available. If necessary, the Contractor may call 410-636-3993 from non-Yard phones and extension 3000 from Yard phones for emergency situations. Injuries shall be reported immediately and followed up with a written report to the COR.

ENVIRONMENTAL PROTECTION REQUIREMENTS: All contractors working on CG Yard shall abide by all federal, state, and local environmental regulations as published by the Environmental Protection Agency, 40 CFR (series) and the following Yard Environmental plans/policies:

· CG Yard Environmental Management Systems (EMS)

· CG Yard Storm Water Pollution and Prevention Plan (SWPPP)

· CG Yard Spill Prevention Control and Counter Measure Plan (SPCC)

Transport and Disposal: All material removed from tanks shall be taken off CG Yard property immediately after cleaning operations are complete. Material shall be processed in accordance with Section 10.2.2 before leaving the Yard. Prior to removing material, the Government environmental dept. reserves the right to inspect the transport vehicle status of contents, to ensure accurate quantities being removed from the CG Yard.

The Contractor must properly remove and dispose of all materials in compliance with applicable Federal, state, and local environmental laws and regulations. Contractor assumes all responsibility and liability for the transport and proper disposal of materials and in particular the following requirements:

1. If a spill occurs, the CG Yard Environmental Branch shall be immediately notified and can be reached at (410) 636-3111. The Contractor must also report the spill to the USCG Yard Main Gate (410) 636-3993 or YARD extension 3000 IMMEDIATELY. A letter describing the incident shall be submitted within 24 hours after the spill. During a spill, the Contractor will receive direction from the Yard Incident Commander/ Firehouse / Environmental or YARD/Vessel OOD.

1. The Contractor MUST follow the USCG Yard Facilities Response Plan, when operating on USCG Yard property.

1. Written notification must be provided to the Environmental Protection Specialist Brandace Timbers 410-636-3775, brandace.t.timbers@uscg.mil of any activity that could potentially cause an environmental violation. Some examples of these activities are: any activity that could result in a spill or discharge into a waterway or introducing a hazardous material into the environment.

1. The Contractor will be solely responsible for the transportation and proper disposal of waste material. Contractor must submit disposal sites to CG Yard Environmental Department for site approvals and copies of Bill Of Lading or waste manifests. If Contractor elects to use dumpsters for holding or transportation of waste, dumpsters must be covered to prevent waste from becoming airborne.

1. Only the Yard Environmental Dept is authorized to sign hazardous waste manifest.

GOVERNMENT FURNISHED ITEMS AND SERVICES:

Services: The Government shall provide material handling services to load and unload Contractor machinery and for the set up of equipment. The Coast Guard Yard shall provide timely assistance as requested by the Contractor. The Contractor shall provide 48-hour notice to the Government when there is a need for material handling services.

Utilities: The Government will provide water, compressed air, and electricity for the Contractor as defined herein. The Contractor shall instruct employees in utilities conservation practices. The Contractor shall be responsible for operating in such a manner that precludes the waste of utilities, for example turning off the water faucets or valves after using the required amount to accomplish assigned work.

Compressed Air: The Government shall provide a source of compressed air for Contractor machinery. The Contractor shall be responsible for ensuring that their compressed air hookup connections are compatible with the Yard’s compressed air sources.

Electricity: The Government shall provide up to 200 amps and up to 480 volts of electrical services.