WI 0654 Rescue Boat Davit Service Revised.doc

USNS Grasp

( TARS 51 )

1.0 ABSTRACT:

The purpose of this item is to inspect, test, accomplish maintenance and overhaul the starboard rescue boat and rescue boat davit.

2.0 REFERENCES/ENCLOSURES:

2.1 References:

2.1.1 IMO Resolution MSC.402 (96) + Corr.1 Requirements for maintenance, thorough examination, operational testing, overhaul and repair of Lifeboats, Rescue Boats, Launching Appliances and Release Gear

2.1.2 USCG NVIC 04-07 Servicing and Maintenance of Lifeboats, Launching Appliances and On-Load Release Gear

2.1.3 USCG NVIC 02-80 Poured-Metal Socket Connections for Lifeboat Falls

2.1.4 NAVSEA Technical Manual S9008-HM-BIB-010, Boat Information Book for Rigid Inflatable Boat 7-Meter

2.1.5 NAVSEA Technical Manual S9583-BS-MMC-010, Slewing Arm Davit Model D60000FCT

2.2 Enclosure:

2.2.1 Enclosure 653-1 Rescue Boat Equipment

3.0 ITEM LOCATION/DESCRIPTION:

3.1 Location/Quantity

3.1.1 Locations:

a. Starboard rescue boat and davit: 01-53-1

3.1.2 Quantity:

a. One (1) seven (7) meter rigid inflatable boat

b. One (1) slewing arm davit

3.2 Item Description/Manufacturer’s Data:

3.2.1 Rescue boat

a. Manufacturer: Willard Marine

b. Model: N00024-02-F-2239

c. Capacity: 18

3.2.2 Rescue boat davit

a. Manufacturer: Allied Systems Company

b. Model: D60000FCT

4.0 GOVERNMENT FURNISHED EQUIPMENT/MATERIAL/SERVICE:

4.1 Amercoat 240

5.0 NOTES:

5.1 The contractor and all subcontractors, regardless of tier must consult the General Technical Requirements (GTR) to determine applicability to this work item. In performance of this work item, the contractor and all subcontractors regardless of tier must comply with the requirements of all applicable GTRs including but not limited to GTRs 1 through 7, 22, 23, 24, 28 and 29.

5.2 The contractor and all subcontractors regardless of tier are advised to review other work items under this contract, including but not limited to Work Items 023 to determine their effect on the work required under this work item. Many of the definitions relating to performance of this work item are found in Work Item 001.

5.3 Off-load release mechanism means a release mechanism which releases the survival craft/rescue boat/fast rescue boat when it is waterborne or when there is no load on the hooks. On-load release mechanism means a release mechanism which releases the survival craft/rescue boat/fast rescue boat with load on the hooks. This release mechanism is to be provided with a hydrostatic interlock unless other means are provided to ensure that the boat is waterborne before the release mechanism can be activated. In case of failure or when the boat is not waterborne, there is to be a means to override the hydrostatic interlock or similar device to allow emergency release. This interlock override capability is to be adequately protected against accidental or premature use. Adequate protection is to include special mechanical protection not normally required for off-load release, in addition to a danger sign.

5.4 The maintenance and adjustment of release gear are critical operations with regard to the safe operation of lifeboats, rescue boats, fast rescue boats and davit launched liferafts. Utmost care is to be taken when carrying out all inspection and maintenance operations on the equipment.

5.5 SOLAS Regulation III/20 – Operational Readiness, Maintenance and Inspections and SOLAS Regulation III/36 – Instructions for Onboard Maintenance apply.

6.0 QUALITY ASSURANCE REQUIREMENTS: None additional.

7.0 STATEMENT OF WORK REQUIRED:

7.1 Inspect, test, accomplish maintenance, and overhaul the rescue boat and rescue boat davit using references 2.1.1 through 2.1.5 and enclosure 2.2.1 for guidance.

7.2 Follow the requirements of 29 CFR §1915.86 for occupational safety and health standards for shipyard personnel working on lifeboats.

7.2.1 Before any employee works in or on a stowed or suspended lifeboat, secure the lifeboat independently from the releasing gear to prevent it from falling or capsizing.

7.2.2 Do not permit any employee to be in a lifeboat while it is being hoisted or lowered, except when the employer demonstrates that it is necessary to conduct operational tests or drills over water, or in the event of an emergency.

7.2.3 Do not permit any employee to work on the outboard side of a lifeboat that is stowed on chocks unless the lifeboat is secured by gripes or another device that prevents it from swinging.

7.3 Conduct the weekly and monthly inspections and routine maintenance as specified in the equipment maintenance manuals. Perform all items listed in checklists for the weekly/monthly inspections required by SOLAS regulations III/20.6 and III/20.7.

7.3.1 Weekly inspection (III/20.6)

a. Visually inspect the rescue boat and rescue boat davit to ensure they are ready for use. The inspection is to include, but is not limited to, the condition of the hooks and their attachment to the rescue boat.

b. Run the rescue boat engine for at least three (3) minutes, provided the ambient temperature is above the minimum temperature required for starting and running the engine. During this time, demonstrate the gear box and gear box train engage satisfactorily.

c. Move the rescue boat from their stowed positions, without any persons onboard, to the extent necessary to demonstrate satisfactory operation of launching appliances.

d. With the assistance of ship’s force, test the general alarm.

7.3.2 Monthly inspections (III/20.7)

a. Turn out the rescue boat from their stowed positions, without any persons onboard.

b. Inspect the life-saving appliances, including the rescue boat equipment, using the SOLAS required checklist (SOLAS III, Regulation 36.1) to ensure the life-saving appliances are complete and in good order. Required rescue boat equipment is listed in Enclosure 2.2.1. Submit a report of the inspection.

7.4 With assistance from the ship’s captain, have the authorized service provider review the vessel’s records of inspections and routine on-board maintenance carried out by the ship's crew and the applicable certificates for the equipment.

7.5 Launching Appliances

7.5.1 Inspect and test the launching appliances for satisfactory condition and operation to include:

a. corrosion, misalignments, deformation and excessive free play of davit and other launching structures;

b. damage such as kinks and corrosion to wires and sheaves;

c. lubrication of wires, sheaves and moving parts;

d. function of limit switches;

e. stored power systems;

f. hydraulic systems;

g. winch braking system;

h. winch brake pads, replace when necessary;

i. winch foundation;

j. control console;

k. power supply system;

l. operating instruction placards, which shall be on or in the vicinity of survival craft and their launching controls.

7.5.2 Inspect the davit and look for loose fasteners, leaking connections or seals, worn or damaged hoses and tubing, or any other defects or dangerous conditions. Promptly report any defects to the MSCREP.

7.5.3 Lubrication:

a. check all oil levels including gear reducers and hydraulics;

b. replace hydraulic filters;

c. lubricate all points and fittings including swing bearing, pinions and ring gear, swing drive, constant tension winch, and sheaves and bushings;

d. drain and replace the swing drive and constant tension winch gearbox oil. Before filling the gearbox with new oil, present the gearbox to the MSCREP for inspection;

e. check accumulator precharge;

7.5.4 Conduct the inspections and tests below on the launching appliances in the presence of the MSCREP and ABS Surveyor:

a. Rocking test and sampling of grease to be analyzed;

b. Cranes fifteen (15) to twenty (20) years old – perform non-destructive testing on twenty (20) percent of the slewing ring bolts;

c. Cranes twenty (20) years and older – perform non-destructive testing on twenty-five (25) percent of the slewing ring bolts;

d. Inspect the slewing ring, bolting arrangements and foundation for slack bolts, damaged bearings and deformed or fractured weldments after proof load testing.

7.5.5 Renew the falls and Spelter type sockets of the rescue boat davit using reference 2.1.3 and 2.1.5 for guidance.

a. Proof load test the fall wire and socket assemblies in the shop.

b. Provide material documentation and certificates for the new fall wire assemblies. Record the characteristics and tests noted above to the MSCREP.

c. Slush new falls with Mobilarma 798.

d. Ensure the rescue boat hang properly after new falls have been installed.

7.5.6 While the falls are removed:

a. Clean the wire rope drum, turn-buckle assemblies and wire rope trackways of all grease, dirt and debris. Lubricate turn-buckle assemblies.

b. Completely disassemble all rescue boat blocks and sheaves. Clean each unit, flush grease passages with solvent and prove clear. Present components to the MSCREP and ABS Surveyor for inspection.

1. Provide and install new bushings and sealed bearings for the sheaves and blocks using reference 2.1.5 for guidance. Clean block and sheave mounting surfaces to SSPC-SP3, Power Tool Cleaning standard. Apply two (2) coats of Amercoat 240 followed by one (1) coat of Haze Grey Amershield to the prepared surfaces. Reassemble and reinstall block and sheave assemblies. Grease all units.

c. Insepct the winches including the clutch assemblies and brake mechanisms. Inspect and replace worn or defective parts.

NOTE: Allied Systems Company recommends replacement with a factory rebuilt unit.

NOTE: Overhaul of the hydraulic power units electric motors are not covered in this work item.

7.6 Release Gear

7.6.1 Prior to the operational test, inspect the release gear for satisfactory condition to include:

a. operation of devices for activation of release gear;

b. excessive free play (tolerances);

c. cables for control and release;

d. hook fastening.

7.6.2 Overhaul the release gear to include:

a. dismantling of hook release units;

b. examinations of tolerances and design requirements;

c. performing non-destructive testing on all vital parts, hooks and any areas identified by the ABS Surveyor;

d. adjustment of release gear system after reassembly.

7.6.3 Do not perform maintenance or adjustment of the release gear while the hooks are under load.

7.7 Rescue Boat

7.7.1 Record the following information for each rescue boat and submit a report with the data to the MSCREP:

a. manufacturer's name and address;

b. rescue boat model and serial number;

c. month and year of manufacture;

d. make and model of the off-load release gear

e. number of persons the rescue boat is approved to carry;

f. approval information.

7.7.2 Inspect and test each rescue boat for satisfactory condition and operation to include:

a. condition of the boat structure including fixed and loose equipment, including a visual examination of the external boundaries of the void spaces, as far as practicable;

b. condition of the gel coat;

c. hatches and doors for watertightness;

d. engine and propulsion system;

1. Perform a 1 (one) hour in-water operational test with the Chief Mate and authorized service provider to include full speed, forward and reverse operations.

e. maneuvering system;

f. power supply system;

g. recharging of all engine starting, radio and searchlight batteries;

h. VHF radio;

i. fixed compass;

j. bailing system;

k. markings and reflective tape;

l. fender/skate arrangements;

7.7.3 Remove the boat from the ship to a protected location. Cover and protect each boat from the elements at all times. Block the boat in the upright position, with at least 3 (three) feet of clearance under the hull to permit inspection and access.

7.7.4 Clean, free up, lubricate and test all moving parts including interlocking devices, hinges, releasing gear and bilge pumps. Each fuel tank must be emptied, cleaned, and refilled with fresh fuel.

7.7.5 Freshwater wash the boat with a mild detergent removing all salt, oils and contaminants, cleaning the entire interior and exterior of the boat. Apply a coat of wax to the exterior of the rigid hull.

7.7.6 All repairs and maintenance of rescue boat are to be carried out in accordance with the manufacturer's instructions. Accomplish repairs at an approved servicing station.

7.7.7 Inspect the condition of the buoyancy tubes forming the boundary of the rescue boat. Verify proper operation of all nonreturn valves for manual inflation, deflation and safety relief valves on each buoyancy compartment.

7.7.8 Rescue boat is to be stowed in a state of continuous readiness for launching in not more than 5 minutes, and if the inflated type, in a fully inflated condition at all times (SOLAS III, Regulation 14 Stowage of rescue boat). Recovery time of the rescue boat is not to be more than 5 minutes in moderate sea conditions when loaded with its full complement of persons and equipment (SOLAS III, Regulation 17 Rescue boat embarkation, launching and recovery arrangements).

7.8 Testing

7.8.1 Testing is to be conducted in the presence of the MSCREP and ABS.

7.8.2 Conduct operational tests with a proof load equal to 1.1 times the weight of the rescue boat and its full complement of persons and equipment. Use the USCG Assumed Average Weight Per Person of 185 pounds in calculating this proof load.

7.8.3 Conduct operational tests including main and auxiliary load hoisting and lowering, slewing (swinging) and safety, protective (fail-safe) and limiting devices. If a boat is used for this test, take precautions to ensure the stability of the boat is not adversely affected by free surface effects or the raising of the center of gravity when loading the boat.

7.8.4 Conduct the five (5) year overload operational test of the launching appliance. Perform a dynamic overload test of the winch brake at maximum lowering speed. When the proof load has reached its maximum lowering speed and before it enters the water, abruptly apply the brake. Following these tests, re-inspect the stressed structural parts where the structure permits the reinspection.

7.8.5 Conduct the five (5) year overload operational test of the off-load release function for each rescue boat as follows:

a. position the boat so that it is fully waterborne;

b. operate the off-load release gear;

c. reset the off-load release gear upon completion.

7.8.6 Re-inspect the release gear after its overload operational test and the overload operational test of the winch brake. Ensure no damage has occurred during the winch brake test, especially to the hook fastening. Re-inspection is to include:

a. operation of devices for activation of release gear;

b. excessive free play (tolerances);

c. cables for control and release;

d. hook fastening.

7.8.7 Prior to hoisting, check that the release gear is completely and properly reset.

7.8.8 Conduct an overload operational test of launching appliance hoisting. The launching appliances should be able to hoist the rescue boat when loaded with its full complement of persons and equipment at a rate of 0.3 meters per second (59 feet per minute).

7.8.9 Recover the boat to the stowed position and leave in a ready for service condition. The final turning-in of the boat is to be done without any persons onboard.

7.8.10 Record the results of all testing and submit a condition report.

7.9 Reports

7.9.1 When inspection, service and testing reveal any deficiency, a condition report is to be submitted to the MSCREP with recommended repairs and parts required. Submit three (3) typewritten copies and one (1) electronic copy in Portable Document Format (PDF).

7.9.2 Submit a report that includes “as released” condition of the rescue boat and davit. Submit three (3) typewritten copies and one (1) electronic copy in Portable Document Format (PDF).

7.9.3 All reports and checklists are to be completed and signed by the person who carried out the inspection and maintenance work and countersigned by the Company’s representative.

7.10 Painting/Lagging:

7.10.1 Prepare, prime, paint and restore all new, soiled, and disturbed surfaces to match surrounding surfaces.

7.11 Manufacturer’s Representative:

7.11.1 Provide the services of authorized service providers to perform all inspections, maintenance and tests and to ensure proper operation of the rescue boat, launching appliances and release gear in accordance with IMO and manufacturer’s performance specifications. In addition, the authorized service provider shall be an ABS recognized External Specialist for the system.

7.11.2 Provide the MSCREP with signed letters of qualification from the original equipment manufacturers, certificate of training for the systems identified in 3.0 and ABS certificate number prior to the start of any work.

7.11.3 All work is only to be accomplished by trained, experienced and authorized service providers.

7.12 Preparation of Drawings: None additional.

8.0 GENERAL REQUIREMENTS: None additional.

Every rescue boat shall carry:

sufficient buoyant oars or paddles to make headway in calm seas. Thole pins, crutches or equivalent arrangements shall be provided for each oar. Thole pins or crutches shall be attached to the boat by lanyards or chains;

a buoyant bailer;

a binnacle containing an efficient compass which is luminous or provided with suitable means of illumination;

a sea-anchor and tripping line if fitted with a hawser of adequate strength not less than 10 meters in length;

a painter of sufficient length and strength, attached to the release device complying with the requirements of LSA Code, Chapter IV Survival Craft, paragraph 4.4.7.7 and placed at the forward end of the rescue boat;

one buoyant towline, not less than 50 meters in length, of sufficient strength to tow a liferaft as required by paragraph 5.1.1.7;

one waterproof electric torch suitable for Morse signaling, together with one spare set of batteries and one spare bulb in a waterproof container;

one whistle or equivalent sound signal;

a first-aid outfit in a waterproof case capable of being closed tightly after use;

two buoyant rescue floats, attached to not less than 30 m of buoyant line;

a searchlight with a horizontal and vertical sector of at least 6º and a measured luminous intensity of 2 500 candles which can work continuously for not less than 3 h;

an efficient radar reflector;

thermal protective aids complying with the requirements of LSA Code, Chapter II, Section 2.5 sufficient for 10% of the number of persons the rescue boat is permitted to accommodate or two, whichever is the greater; and portable fire-extinguishing equipment of an approved type suitable for extinguishing oil fires.

In addition to the equipment required by every Rescue Boat, the normal equipment of every rigid rescue boat shall include:

a boat-hook;

a bucket; and a knife or hatchet.

In addition to the equipment required by every Rescue Boat, the normal equipment of every inflated rescue boat shall consist of:

a buoyant safety knife;

two sponges;

an efficient manually operated bellows or pump;

a repair kit in a suitable container for repairing punctures; and a safety boat-hook.

In addition to the equipment required by every Rescue Boat, the normal equipment of every fast rescue boat shall consist of:

VHF radiocommunication set which is hands-free and watertight

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