ATC 1 Drydocking Cheraw FY10 V4 - Changes Accepted.pdf

TUG CHERAW

ITEM 1 SAFETY PLANS AND SUBMITTALS,

SAFETY REQUIREMENTS:

The contractor shall follow all Safety Requirements detailed in the Unified Facilities Guide Specifications (USACE UFGS 01-35- 26, February 2009), attached, and applicable Safety & Health Requirements Manual per EM 385-1-1.

EM385-1-1 is available on-line at:

http://www.usace.army.mil/CESO/Pages/EM385-1-1,2008NEW!.aspx

Safety Submittals:

(APP) Accident Prevention Plan and completed Checklist

(blank attached) AHA’s) Activity Hazard Analysis (blank attached) Competent Person / Site Safety Officer (SSHO) Qualifications

All safety submittals shall be provided to the government within 14 calendar days after contract award.

No work on the vessel will be permitted until the COE Safety Office has reviewed and found the submittals to be acceptable.

Portions of the submittals that are disapproved shall be promptly corrected and re-submitted. If additional work items are added to the contract work the Accident Prevention Plan and AHAs shall be amended as necessary and approved prior to the start of the additional work items.

Payment for this item will be in one lump sum.

ITEM 2 DOCKING AND UNDOCKING,

Properly drydock the Tug Cheraw for such time as may be necessary to complete all underwater work specified herein including sight and survey (including ABS survey), inspection, repairs, and to refloat the vessel upon completion of all work. Provide safe and convenient means of boarding the vessel at all times. This item will include any charges for altering blocks, providing the services specified under Paragraph SP-12 (electric service, trash removal, etc), and for the drydock foreman's charge. Allow a sufficient number of days in drydock to complete the mandatory underwater work herein specified (Items 4 to 9 and 15). The contractor shall state in his bid the schedule to perform all mandatory items after delivery of the plant. Assume that a maximum of one day per week that the vessel is in the contractor’s facility will be unsuitable for painting. If http://www.usace.army.mil/CESO/Pages/EM385-1-1,2008NEW!.aspx unsuitable days are more frequent, time allowances will be made by the Government. Bids will be evaluated on the basis of time to complete the work in addition to price and other factors.

Payment for this item will be in one lump sum.

ITEM 2A SCHEDULE TO COMPLETE MANDATORY WORK ITEMS

As noted above, state the start and completion dates required to perform all mandatory items based on availability of the plant no later than 20 November 2009.

ITEM 3a ADDITIONAL LAY DAYS (OPTIONAL)

If ordered, provide additional lay days on the drydock to perform work which cannot be completed within the time needed for completion of the work awarded as part of this contract, and which may be required in addition to that herein specified or by an emergency. This item is to include the drydock foreman's charge, and services specified under Paragraph SP-12. Payment for this item will be made at the contract price per day for Item 3a, "Additional Lay days." If needed, this item will be awarded in conjunction with contract modifications needed to award such unforeseen work.

ITEM 3b ADDITIONAL DOCKAGE, TUG CHERAW

(OPTIONAL, ESTIMATED QUANTITY)

Provide dockage with power (440 VAC, 100 Amps) and up to 2,000 gallons of potable water for the Tug Cheraw in the event the vessels can not return safely to their home port in Cleveland, OH due to weather. This includes all ancillary utility services and dockage required. Payment for this item will be on a daily basis. Bids will be evaluated on an estimated three days.

ITEM 4 SEA VALVES AND SEA CHEST

Open the sea valves listed below for inspection. Face off and grind all sea valves, steaming out as necessary. Free up the valve stems and discs and repack all glands. Examine the shell fastenings and renew all missing, broken, crystallized, or otherwise defective nipples, studs, nuts, or bolts. All fittings are to be schedule 80 black pipe. Remove the strainer plates from the sea chests. Thoroughly clean and wire brush the plates, the interior of the sea chests, and the spool pieces up to the valves. All strainer plates shall be hot dip galvanized and the interior of the sea chests shall be painted with the paint system specified in Item 8, CLEAN AND PAINT THE HULL. After all essential work has been completed and inspected, the Contractor shall properly close all sea valves and fit all strainer plates in good order, renew any missing or defective fastenings, and leave them in good condition, ready for service.

NOTE: There is a sea chest located along the starboard side, aft, that is not currently used and therefore has no valves noted below.

List of Valves:

Low Sea Chest- Engine room, fwd., along the center 6" angle valve 2" globe valve 1" globe valve

High Sea Chest- Engine room, fwd., starboard 6" gate valve 1 1/2" gate valve 1" gate valve

Fire Pump Sea Chest 8" gate valve 2 ½” gate valve 2" gate valve 1" globe valve ¾” gate valve

Overboard Discharges Engine room, starboard 6" angle valve 3" globe valve

Engine room, port 4" gate valve 2 1/2" angle valve 2" check valves, 2 each in line 1 1/2" globe valve 1" globe valve

Crew quarters, fwd.

1 1/4" globe valve 1 1/4" check valve

ITEM 5

STERN GLAND STUFFING BOX AND STERN TUBE SEAL

Reeve out all old packing from the stern gland stuffing box and stern tube seal and thoroughly clean the box and seal. Chip and scale rust spots in way of the interior gland and apply two coats of Apexior No. 3 or equal as approved by the Contracting Officer.

Repack the stuffing box and seal with selected long fiber woven 1" square Teflon impregnated flax packing, packing to be furnished by the government. Approximately 24 lineal feet of packing will be required. The packing shall be true fit around the entire circumference of the stuffing box and seal.

ITEM 6 RUDDER

Unship the rudder and quadrant for examination of the pintles, gudgeons, palm bolts, carrier and steady bearing, etc. Upon completion of the examination and necessary repairs, replace the rudder. Any necessary repairs to the rudder shall be subject to a change order when the extent of repairs to be made is known.

For rudder details see drawing number YTB799-519-4372282.

ITEM 7 TAILSHAFT AND PROPELLER

The propeller shall be removed, and the tailshaft disconnected, drawn and cleaned for examination by the Contracting Officer's Representative, American Bureau of Shipping and/or U.S. Coast Guard Inspectors. The keyway of the shaft shall be tested with a magnetic particle inspection and two copies of the inspection report shall be provided to the government. All rough edges and grooves on the shaft shall be filed smooth. Where directed, the shaft shall be cleaned and wire brushed and thoroughly coated with Tarset or equal as approved by the Contracting Officer. The shaft shall be correctly reinstalled in place in proper alignment. All removals shall be replaced and reconnected and made ready for use. The propeller, fairwater, and rope guard shall be reinstalled. The propeller fit upon re-installation shall be a minimum of 80% as determined by bluing. The propeller nut keepers shall be renewed as directed. See Drawing Number YTB 799-203-4372255 Shafting Arrangement for the shaft arrangement and details. This item is to include all staging.

Fabricate and install a new Fairwater cone to replace the one that is missing.

Repairs to the propeller blades are anticipated. Cost and schedule for this work will be negotiated after inspection in the dry dock.

ITEM 8 CLEAN AND RECOAT THE HULL

Clean and spray paint the hull and rudder of the tug with a commercial non-toxic low surface tension anti-fouling paint system. All coatings shall be delivered to the work site in sealed containers. Each container shall show: Name of the manufacturer, name of the paint, formula of the paint, the batch number and date of manufacture (not coded). The paint shall be thoroughly mixed in accordance with the manufacturer’s instructions. All painting shall be done during daylight hours, and then only when atmospheric conditions will permit proper curing and bonding. Scaffolds or other means of providing access to the surfaces to be worked on shall be provided for use by the persons blasting and painting. The use of extension pipes for sand blasting and paint spraying will not be permitted. All sand blasting shall be done from above when working the sides of the vessel, with the blast nozzles pointed downward to minimize the spread of sand to the upper portion of the vessel. All ventilating air inlets to the tug shall be secured so that no sandblast grit or debris enters the tug. Particular attention shall be paid to the air inlets for the main engine and engine room. No paint shall be applied until the surfaces to be coated have been inspected and approved for painting, and in no case shall paint be applied over damp, oily, or greasy surfaces or over any foreign substances.

The contractor shall insure that a representative from the paint manufacturer is on site to insure that the surface preparation and paint application are in accordance with the manufacturer’s requirements. This representative shall provide a written report to the Corps of Engineers documenting the application parameters, coating thickness applied, and stating that the paint system application meets all the manufacturer’s requirements.

The entire hull and rudder exterior shall be high-pressure water blasted in order to remove any fouling or other contaminants and allowed to dry. Any areas of failed paint shall be blasted to near white metal (SSPC SP-10) and immediately coated with a primer coat of ECOMAX BI-LV to a wet film thickness of 14 mils, dry film thickness of 10 mils. The primer coat shall include the manufacturer’s binder additive in order to allow bonding of the Bioclean top coat.

Once approved by the paint manufacturer’s representative, the entire hull and rudder area shall then be coated with a new coat of non-toxic low surface tension anti-foulant (CMP Coatings Bioclean ECO. CMP Coatings, 133 Swinley St., Williamsburg, VA 23188 (757) 258-0520) to produce a coating having a minimum dry film thickness of 6.0 mils.

Assume that no more than 300 square feet of the hull and rudder will require blasting to near white metal. If this area is greater an adjustment will be made to the price to reflect the additional work.

The hull and rudder were painted with a similar system (Bioclean DX) in 1996 and recoated with Bioclean SPG-H system in 2004.

ITEM 8A FLEET AND PAINT TUG (OPTIONAL)

If so ordered, fleet the tug and blast to white metal (SSPC SP-

10) all portions of the tug previously covered by blocking, etc.

After blasting apply primer, binder coat and anti-fouling coat as above. This option will be awarded along with the mandatory work if it is to be performed.

ITEM 9 AUDIOGAGE READINGS (ESTIMATED QUANTITY)

The contractor shall perform audiogage readings of the hull and rudder as directed by the government representative in conjunction with ABS inspection. The audiogage readings shall be taken so as not to disturb the existing paint coating on the hull. An estimated total of 125 readings will be required. Two copies of the readings shall be provided to the government in the form of sketches and tables clearly indicating the location and value of each reading. The readings shall be provided to the government no later than 3 work days after the readings are taken.

ITEM 10 ELECTRIC WELDING (OPTIONAL/EST. QTY.),

If required and directed to, the contractor will perform electric welding on the tug CHERAW as ordered by the Contracting Officer.

A price per hour will be quoted based on an estimated requirement of 120 hours of welding services. The price shall include all welding rod, gasses and misc. materials. Any steel required will be charged for separately.

ITEM 11 CLEANING OF FUEL TANKS (OPTIONAL)

If so ordered, the contractor shall transfer all fuel from each tank and then clean and gas free each fuel tank, disposing of all sludge, bacteria, etc. A marine chemist shall provide a certificate stating that the tanks are safe for entry by personnel and safe for hot work. The tug will have approximately 8,000 gallons of fuel on board. The contractor shall renew all studs and nuts securing the fuel oil tank covers.

The fuel tanks on the Chetek consist of a main engine day tank (812 gallons), No. 1 tanks port and starboard (4,388 gallons each), No. 2 tanks port and starboard (5,280 gallons each), No. 2 tank center (2630 gallons), and No. 3 tanks port and starboard (3584 gallons each). The No. 2 center and starboard tanks are siamesed together.

NOTE: The number 3 tanks port and starboard have not been in service and will not need to be cleaned.

This option will be awarded along with the mandatory work if it is to be performed.

ITEM 12 TAILSHAFT BEARING (OPTIONAL)

The contractor shall remove the existing outboard cutlass tailshaft bearing and replace it with a new bearing. See Drawing Number YTB 799-203-4372255 Shafting Arrangement for the shaft arrangement and details. Note that the tailshaft bearing may be a long lead time item. Additional lay days required to perform this work are to be specified on the Bid Sheet, and shall include any time required for acquisition of the new bearing. This option will be awarded along with the mandatory work if it is to be performed.

ITEM 13 BEARING LINER RENEWAL (OPTIONAL)

If ordered, the contractor shall remove the existing tailshaft bearing liner in way of the cutlass bearing and renew it with a new liner. See Drawing Number YTB774-203-2263022 for details.

Note that the bearing liner may be a long lead time item.

Additional lay days required to perform this work are to be specified on the Bid Sheet, and shall include any time required for acquisition of the new liner. This option will be awarded along with the mandatory work if it is to be performed.

ITEM 14 ANCHOR CHAIN (OPTIONAL)

If ordered, the contractor shall remove all anchor chain from the chain locker and flake out on the dock for inspection. When the inspection is complete the contractor shall replace the chain in the locker, ready for service. The chain consists of 60 fathoms of 1 inch diameter stud link chain in 15 fathom shots. The shots are connected with a large link and shackle and an outboard swivel is provided at the anchor end. The bitter end is secured to the chain locker by a shear pin. This option will be awarded along with the mandatory work if it is to be performed.

ITEM 15 FATHOMETER

The contractor shall remove the existing fathometer system and replace with a new Furuno model ED222 fathometer system to include the display, transducer and all interconnecting wiring.

The existing fathometer transducer is housed in a flange on the end of a pipe welded through the hull in the vicinity of the forward crew quarters.

ITEM 16 CLEANING OF BALLAST TANKS

The contractor shall clean each ballast tank, properly disposing of all sludge, sediment, bacteria, etc. A marine chemist shall provide a certificate stating that the tanks are safe for entry by personnel and safe for hot work. The contractor shall renew all studs and nuts securing the ballast tank covers.

Capacity of the ballast tanks is as follows:

Forepeak - 7.72 Long Tons Forward - 12.05 Long Tons Aft Port - 8.28 Long Tons Aft Stbd - 8.28 Long Tons