SOW.pdf

AMC-000-3C

AUGUST 1995

SUPERSEDING

AMC-000-3B

JUNE 1993

NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION (NOAA)

ATLANTIC MARINE CENTER

STANDARD SPECIFICATION AMC-000-3C

GENERAL REQUIREMENTS FOR SMALL CONTRACT SHIP REPAIRS

1. SCOPE. This specification contains the general requirements for small contract and purchase order repair work by a Contractor on or for NOAA ships assigned to the Atlantic Marine Center.

2. REFERENCES.

a. American Bureau of Shipping "Rules for Building and Classing Steel Vessels"

b. U. S. Coast Guard "Subchapter F - Marine Engineering", 46 CFR 50 through 46 CFR 64.

c. U. S. Coast Guard "Subchapter J - Electrical Engineering", 46 CFR 110 through 46 CFR 113.

d. IEEE Std 45-1983, "IEEE Recommended Practice for Electric Installations on Shipboard"

e. 40 CFR 61, Subpart M, sections 61.140 through 61.157

f. 29 CFR 1915.1001

g. NOAA Standard Specification AMC-077-1(series), "Asbestos Containing Materials"

3. DEFINITIONS. Whenever used herein or in other documents which invoke this specification by reference, the following definitions of terms apply:

3.1 Inspect. Visually evaluate the specified surface, item, part, or component for evidence of contamination, damage excessive wear, scoring, and any other condition which could interfere with the proper operation or functioning of the surface, item, part or component.

3.2 Install. Place the specified item in position for service and make all connections needed to insure proper use, service, appearance, and operation. Except as may otherwise be specified, this shall include the following:

a. Provide new or modify existing foundations. Securely mount equipment and components using new fasteners. Align connected equipments and components to meet manufacturers’ specifications.

b. Make all electrical connections. Provide new electric cable runs between controllers and motors of new equipment.

Existing cables may be reused in other applications, except where the existing cables are too short to make connections. Renew cables which are too short and less than 20 feet long. Junction boxes may be used to increasse the cable run length where the existing cable runs are longer than 20 feet.

c. Modify new piping to suit the new equipment, including the rerouting of existing piping and adding of new piping as needed to properly connect equipment and components. Piping modifications greater than five feet from the equipment are not required. New piping is required only to the extent necessary to accommodate modifications of existing piping.

3.3 Piping. A system of pipe, tube, elbows, tees, valves, couplings, and other pipe fittings.

3.4 Rebuild. Disassemble, clean, inspect, repair (including

renewal of all parts needed), reassemble, test, and calibrate the specified part, component, system, or machine to restore it to a condition of reliablility equivalent to a new part, component, system, or machine. Components and parts shall meet the manufacturer's applicable rebuild specifications.

3.5 Reinstall. Return the same item which was previously

removed to its previous configuration and location.

3.6 Renew. Provide and install a new item as replacement for

an existing item previously removed or to be removed. The new item must be the same as or comparable in material, performance and configuration to the item removed.

3.7 Replace. Same as "renew", defined above.

4. REQUIREMENTS.

4.1 Gas Free Certification.

a. The Contractor shall be responsible for certifying that a safe atmosphere exists in and about a compartment prior to the commencement of any work. Whenever compartments must be gas free to meet state and federal regulations, the Contractor shall pump down, open, remove sludge, clean, wipe, ventilate and take all other action required to make the compartments safe for the work to be performed.

b. Copies of gas free certificates, issued by a Marine Chemist certified by the National Fire Protection Association, shall be provided to the Chief Engineer prior to starting any hot work.

4.2 Fire Watch Standers.

a. Hot work is permitted only when fire watch standers are provided by the Contractor. A fire watch stander is required whenever welding, flame cutting or other hot work is performed where combustible materials are present within 35 feet; or where wall or deck openings within a 35-feet radius expose combustible materials in adjacent areas; or when combustible materials are adjacent to the opposite side of metal partitions exposed to hot work, and could be ignited by conduction or radiation. In the latter case, a fire watch stander is required on both sides of the partition.

b. Each fire watch stander shall be outfitted by the Contractor with a fire extinguisher of a suitable size and type, as specified by the Chief Engineer.

c. Each fire watch stander shall remain at their work site for at least 30 minutes after completion of the hot work. Prior to leaving the work site, the fire watch stander shall verify with the worker performing the hot work that no further hot work will be performed.

4.3 Hot Work Notice. Prior to starting hot work on any job or separate area of the ship, provide notice to the ship's Chief Engineer.

4.4 Interferences and Restorations.

a. Remove all interferences and obstructions necessary to complete the required work. This shall include the disassembly and removal of machinery, piping, ducts, cable, wiring, insulation, structures, and anything else which interferes with the proper accomplishment of work.

b. Restore all interferences to their existing configuration and condition. Install new gaskets and fasteners.

In place of material which is rendered unsuitable for reinstallation during removal or storage, provide and install new materials which are equal in composition, strength, design, type, and size as existed prior to removal. All insulation, including removable blankets, shall be considered to be unsuitable for reinstallation and shall be renewed with new insulation.

c. Material containing asbestos which is removed as an interference shall not be reinstalled. Instead, renew the asbestos-containing material with a new non-asbestos material which provides the same function and general appearance as that removed.

4.5 Watertight Integrity. Maintain or restore the watertight

integrity of the ship's watertight bulkheads, decks, and hull by installing stuffing tubes, welded bulkhead and deck penetrations, multi-cable transits, couplings, and kickpipes as appropriate.

All materials and installation details shall be same as the nearest similar existing penetrations.

4.6 Removals.

a. Whenever removal of equipment or machinery is specified, but reinstallation is not specified, the Contractor shall remove all related electric cables, brackets, foundations, and piping.

Removal of cables shall be to the nearest circuit breaker or terminal not needed for operation of other equipment or machinery. Removal of piping shall include all related piping not used by other systems or equipment. Install pipe caps as needed to maintain remaining piping tight.

b. Whenever removal of piping or cables involve penetration through bulkheads, decks, hull plating or other watertight boundaries, crop out the penetration and install an insert plate of same thickness as the adjacent plating. Insert plates shall be a minimum of 6-inch diameters.

4.7 Brackets and Supports. All pipe, cables, ducts, furniture, equipment, machinery installed by the Contractor shall be bracketed, supported, and secured so as to carry the weight, prevent vibration, and withstand inertia forces resulting from rolling and pitching of the ship.

4.8 Gaskets, Packing, and Seals. Whenever the Contractor

performs work which disturbs existing gaskets, packing, or seals, new gaskets, packing, and seals of same material as existing shall be installed, except use 3/16-inch thick cork rubber impregnated gasket material conforming to MIL-C-6183, Type I, Class 1, Grade C for all fuel oil tank manhole covers and fuel oil service piping.

4.9 Welding and Allied Processes.

a. All welding, brazing, and allied processes shall be in accordance with the requirements and recommendations of references 2.a and 2.b.

b. While the ship is water-borne, welding shall be permitted only when welding leads are properly grounded. Welding machines and other welding power sources shall have both cables connected only to the ship where welding is done. The return ground cable shall never be grounded to anything but the ship it is servicing. All welding cables shall be fully insulated and not be permitted to drop overboard into the water. The total cross-sectional areas of the return ground cable shall be at least one million circular mils per 1,000 amperes per 100 feet, but not less than 85,000 circular mils. The ground cable shall be securely fastened to grounding plates or to an integral part of the ship, with contact areas thoroughly cleaned to bare metal.

c. When welding on equipment, machinery, pressure vessels, or piping, the return ground cable to the welding machine shall be connected in the immediate vicinity (as close as practical) of the work to ensure that current does not flow through bearings, pipe hangers or other areas where arcing or high resistance paths exist.

4.10 Painting.

a. Prior to applying any paint or coatings, the Contractor shall verify to the COTR that all surfaces have been properly prepared and that weather conditions are suitable for painting.

b. Paint shall be applied only when the following conditions exist and can be maintained until the paint has cured:

1. Apply paint only to dry surfaces and when there is no chance of precipitation until after the paint has cured. The temperature of the surface to be painted shall be at least 5 degrees Fahrenheit above the dew point. The dew point can be presumed to be satisfactory if a thin, clearly defined film of water applied to the cleaned surface with a damp cloth evaporates within 15 minutes. Otherwise, the dew point shall be measured prior to painting by taking the dry-bulb temperature of the surface and the wet-bulb temperature at the jobsite.

2. The air temperature and surface temperature must both be a minimum of 45 degrees Fahrenheit at all times, unless a lower temperature is specifically authorized by the paint manufacturer's printed instructions.

c. Restore all existing coating systems which are damaged during performance of work. The new coating system shall be same as existing. New materials shall be prepared and painted with same system as adjacent materials.

d. Surface preparation and paint application shall be in accordance with the paint manufacturers' printed recommendations and instructions for all aspects of surface preparation, and handling, mixing, and application of paint materials.

4.11 Electrical. All requirements and recommendations of

references 2.c and 2.d shall be followed in the selection and installation of electrical cables, equipment, and machinery.

4.12 Piping.

a. Materials for new installations and new materials required for replacement of existing piping shall comply with the requirements and recommendations of reference 2.b. and MIL-STD-

777. In the event a conflict between reference 2.b and MIL-STD- 777, the more specific and restrictive shall take precedence.

b. When renewing existing piping, new piping shall be same material, shall be installed in same configuration, and shall be installed using the same methods and details as the existing piping, unless otherwise specified.

4.13 Tests and Inspections.

a. Nondestructive tests (NDT) are required only to the extent specified in other specifications or procurement documents. When NDT is required, comply with MIL-STD-271F, including the requirements for qualification of NDT personnel, procedures, and equipment.

b. Workers performing NDT shall be certified as Level two craftsmen by the American Society for Non-Destructive Testing in accordance with Recommended Practice No SNT TC-1A. Copies of the worker's certificate shall be provided upon request to the COTR.

c. Whenever a "hose test" is required, conduct the test by directing a 50-psig stream of water from a 1-1/2 inch fire hose through an all purpose nozzle at a distance of not more than 10 feet from the surface being tested. Direct the stream of water in a manner most likely to disclose a leak and inspect the opposite side of the surface for leaks.

d. Whenever an "air test" is required, conduct the test by sealing all vents and applying 2 psig air pressure to the specified tank or compartment. After the 2 psig pressure is attained, disconnect the air supply and monitor the pressure in the tank or compartment with a calibrated pressure gage for 10 minutes. If the pressure drops below 1.9 psig during the 10-minute period, increase the pressure to 2 psig and inspect for leaks by applying soapy water to all new welds, and to all manhole covers of the tank or compartment. After the test, insure that all vents are unsealed.

4.14 Asbestos-Containing Materials (ACM). Existing panels, insulation, gaskets, and other materials on NOAA ships and boats may contain asbestos.

a. Unless otherwise indicated, an asbestos survey has been conducted for each NOAA ship. A Survey Report has been prepared which identifies the location of all known asbestos-containing materials on the ship. A copy of the Survey Report will be made available for review by prospective bidders.

b. Within 24 hours after commencement of the contract performance period, conduct an inspection of each work site that will involve a demolition or renovation operation as defined and required by reference 2.e.

c. The inspection shall be conducted by an ACM Project manager who is experienced in administration and supervision of asbestos abatement projects, including ACM identification, work practices, protective measures, and disposal procedures. The ACM project Manager shall be a Qualified Person as defined in and meeting the requirements of reference 2.f. This person must have completed a course at an EPA Training Center or an equivalent certified course and must have a minimum of two years on-the-job training in asbestos abatement procedures.

d. Within 24 hours after the inspection(s), the Project manager shall submit a report to the COTR for each work site. The report shall be submitted using the form shown in Appendix A of reference 2.g. A contractor-generated form may be substituted if it provides all the information shown in Appendix A of reference 2.g.

e. The Contractor shall be responsible for all removal, handling, repair, and disposal of all ACM that are identified as ACM in the applicable Survey Report, and that is necessary to perform required contract work. Except as otherwise specified, the Contractor is not responsible for removal, handling, repair, or disposal of any ACM which is not identified in the applicable Survey Report.

f. All work involving removal handling, repair, or disposal, and all other activities related to asbestos-containing materials (ACM) shall be accomplished in accordance with reference 2.g.

4.31 Disassembly and Inspections. Whenever equipment, machinery, systems, or other system components are required to be disassembled, opened or overhauled, the contractor shall complete all disassembling and inspections during the first 25-percent of the work performance period. All tanks required to be opened shall also be opened and gas-freed during the first 25-percent of the work performance period. No time extension of the work performance period will be granted for delays caused by the contractor's failure to comply with this 25-percent time required.

END OF SPECIFICATION