69727620Q000024 - Questions and Responses - Attachment 4.pdf

Questions and Responses

TS SOMI FY20 Dry Dock

69727620Q000024

1. Question: Could you please provide the documents in the “List of References” for quoting purposes of the TS State of Michigan?

Response: Please see the attached ZIP file for the requested documents.

2. Question: I would also like to obtain each of the 4 Main Diesel Engines Serial Numbers for quoting Items 301, 302, and 303.

Response: #1 ‐ 35Z00946 #2 ‐ 35Z00924 #3 ‐ 35Z00950 #4 ‐ 35Z00944

3. Question: I noticed there are only (3) Main Diesel Engines up for a “Top end Overhaul” in the

Scope of Work. Other references state that there are (4) Main Diesel engines that power the vessel. Where is the 4th engine located?

Response: All four generators are located in the main generator space.

4. Question: What is the vessel availability period in 2020?

Response: It is currently anticipated that the TS SOMI will be available for dry dock at the end of October 2020.

5. Question: Please clarify item 305 and provide necessary DWGs and arrangements.

Response: Please see attached drawings.

6. Question: For Work item 301, 302, 303 please provide “Caterpillar Overhaul 1‐13”.

Response: Accomplish all work outlined in this item according to OEM recommended procedures.

7. Question: Please provide drawings for Work item 304 please provide Herbert DWGs referenced in specification (specifically electrical DWGs and model numbers of intended local controls and actuators).

Response: See attached files.

8. Question: Please provide a drawing of Work item 306 of louver/fire dampers.

Response: Please see attached drawings.

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T/S STATE OF MICHIGAN

Bilge Pump No.1

Modifications for Remote Control from MCS and FCS

Electrical Bill or Materials, Scope of Work, & Installation Requirements

Reference drawings:

SEI-S60-2007 Bilge Pump #1 Controller Diagram

300-5988612 Electrical System One Line Diagram

529-0000215 Bilge, Ballast & Oily Waste Diagram

0721-601-01 General Arrangement

Bill of Materials:

All materials are contractor supplied.

Cable:

Qty 300 ft; 7 conductor, 14 AWG (7x2.5 mm2); Anixter MNIA-7-4 or equivalent.

Cable Glands (Cord Grips):

Qty 4; suitable for 0.490 inch O.D. cable; Lapp Skintop S1234 or S2234 or equivalent.

Push Button Motor Start Switch with Safety Cover:

Qty 2; black or green color; normally open momentary switch.

Switches to be same or similar type as existing fire/ballast pump start switches on the Fire Control Station Panel.

Flip-up safety cover to be provided to prevent button from accidentally being pushed.

Push Button Motor Stop Switch:

Qty 2; red color; normally closed momentary switch.

Switches to be same or similar type as existing fire/ballast pump stop switches on the Fire Control Station Panel.

T/S STATE OF MICHIGAN Bilge Pump No.1 Mods Electrical SOW

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Run Status Lights:

Qty 2; red or white color.

Run status lights to be same or similar type as existing fire/ballast pump run status lights on the Fire Control Station Panel.

Identification Plaques:

Lamicoid type, black phenolic plastic core with white cap for engraved lettering.

Mounting to be by 3M 467MP or equivalent adhesive backing in addition to self-tapping stainless steel screws (2x screws per plaque).

Engraved text size to be similar to the plaques on the Main Control Station Console for the fire pumps.

Qty 2; “BILGE PUMP NO. 1” Qty 2; “START PUMP” Qty 2; “STOP PUMP” Qty 2; “RUN”

Cable Penetrations (only required if new cables cannot be added to existing penetrations):

Qty 2, Roxtec SLA RS 50 Galv pre-configured transit kit or equivalent.

Miscellaneous:

Ring terminals (14 AWG crimp type), cable ties, cable identification tags.

Qty as needed.

Scope of Work:

Removals:

There are no removals.

Modifications & Additions:

Install one (1) motor start switch, one (1) motor stop switch, and one (1) run status light on the Main Control Station Console. Install switches and light in space above Engine Order Telegraph. Install identification plaques above each switch and light using adhesive backing and self-tapping screws.

Install one (1) motor start switch, one (1) motor stop switch, and one (1) run status light on the Fire Control Station Panel on Main Deck. Install switches and light in space to right

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side of Fuel Oil Pump Emergency Stop push buttons. Install identification plaques above each switch and light using adhesive backing and self-tapping screws.

If Motor Control Center 1B (located in the Main Generator Room) already has spare cable glands installed that are suitable for 0.490 inch O.D. cable, then those can be used instead of installing new cable glands. Otherwise, punch or drill two holes in Motor Control Center 1B suitable for 3/4NPT cable glands and install the cable glands.

If the Main Control Station Console already has a spare cable gland installed that is suitable for 0.490 inch O.D. cable, then that cable gland can be used instead of installing a new cable gland. Otherwise, punch or drill one hole in the Main Control Station Console suitable for a 3/4NPT cable gland and install the cable gland.

Punch or drill one hole in the top of the Fire Control Station panel on Main Deck suitable for a 3/4NPT cable gland and install the cable gland.

Install and connect one (1) 7x2.5mm2 (7 conductor, 14 AWG) (MNIA-7-4) cable from the Bilge Pump #1 Motor Controller (located at Motor Control Center 1B) to the Main Control Station Console as shown on the SEI-S60-2007 diagram. Install cable identification tags for each conductor at both ends of the cable.

Install and connect one (1) 7x2.5mm2 (7 conductor, 14 AWG) (MNIA-7-4) cable from the Bilge Pump #1 Motor Controller (located at Motor Control Center 1B) to the Fire Control Station panel on Main Deck as shown on the SEI-S60-2007 diagram. Install cable identification tags for each conductor at both ends of the cable.

Use existing cableways and cable penetrations were possible. Install new cableways and cable penetrations as needed.

If a new bulkhead penetration is needed between the Main Generator Room and Main Control Station, the penetration is to be watertight. If a new bulkhead penetration is needed between the Main Generator Room (Machinery Access Trunk) and the Upper Deck Passage, the penetration is to be A60 fire protection rated. Materials for new penetrations, if needed, are to be contractor supplied and are as noted in the bill of materials above.

Any coatings damaged during the installation of the cable penetrations are to be repaired using an owner approved coating system.

Any insulation removed or damaged during the installation of the cable penetrations is to be repaired or replaced as needed with the same type and thickness insulation.

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Electrical Installation Requirements

General

All recommended practices of ABS, USCG, and IEEE-45-2002 “Recommended Practice for Electric Installations on Shipboard” are deemed requirements of this Specification. All work shall conform to the latest U.S. Coast Guard requirements, ABS Marine Vessel Rules, and the U.S. Supplement to ABS Rules for Steel Vessels. Electrical installations and/or modifications called out in the Specification shall be made in accordance with the requirements set forth therein.

All required equipment not listed as Owner furnished shall be Contractor furnished and installed.

The Contractor shall provide vendor data of all Contractor furnished equipment.

Cable & Cable Installation

Cables shall be installed in Cableways in compliance with ABS, USCG, and other applicable Regulatory Body Requirements.

Electrical cables shall meet ABS requirements, including flammability and bunched flammability criteria.

Power cables shall have a 90°C operating temperature. All cables shall be properly selected for their intended purpose. Cables shall be run as directly as practicable, consistent with adequate ventilation of the cable wire ways, and with due care in the avoidance of hazardous or otherwise undesirable locations.

Cables for controlling or monitoring analog or thermocouple signals shall be shielded. Shielding shall be connected to hull potential (PE) only at the one end.

Cables, insofar as practicable, shall not be installed in locations exposed to weather. Cables for weather deck mounted fixtures and equipment shall be installed on the inside surface of house structures supporting such fixtures and equipment.

Cables in crew areas shall be concealed wherever practical. Cabling shall be neatly formed and installed in a workmanlike manner, giving particular attention to appearance.

All cables shall be continuous between outlet boxes, connection boxes, switchboards, panel boards, etc.

They shall enter the box and shall be secured by a clamp or connector to assure a good electrical connection between the cable armor, where fitted, and the box and wiring device, or the cable armor may be electrically connected to the enclosure by means of a suitable clamp or strap.

Cable entry into electrical equipment in exposed areas shall generally be from below unless otherwise noted.

At specific locations, where cable entry from below is impractical, cable entry from another direction shall be the subject of approval by the Owner.

The cross-sectional areas for power cables shall be dimensioned according to the load table of the classification society, assuming an ambient temperature of 40° C, and an ambient temperature of 50° C in engine spaces.

The minimum cross-sectional area for single and multi-core cables and lines shall be:

1.5 mm2 or larger – power & lighting

1.0 mm2 or larger – control and monitoring

0.75 mm2 or larger – thermocouples, or shielded instrumentation

Combining alternating current (AC) and low voltage DC control and monitoring signals within the same multi-core cable is prohibited.

Cables may be connected in parallel, when the individual conductor cross sectional area is greater than 50mm2.

Cables located in hazardous areas shall be armored. The armor shall be tinned copper or aluminum where such cables are located in hazardous weather areas.

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Cables located in hazardous areas shall enter enclosures or field devices with a sealed fitting that prevents the passage of gas and filled with a gas-tight sealing compound consistent with the Class, Division, and Group of the hazard.

The cable sealing compound for hazardous areas shall provide a seal to minimize the passage of gas and/or vapors through the sealing fitting including the area around the cable armor.

Cables carrying intrinsically safe signal levels into hazardous areas shall be separated from all other cables by at least 50 mm. This requirement also applies to all penetrations.

Control and monitoring cables to sensors, remote distribution panels, or to main processors, shall be segregated from power and lighting cables by at least 50 mm, or as otherwise approved by the Owner.

Cables for Ethernet or other communications cables routed in close proximity with power and lighting cables shall be housed in rigid and/or flexible galvanized steel conduits.

Rigid and/or flexible galvanized steel conduits shall be bonded to hull (PE) at each end with grounding bushings.

Cable splicing shall not be allowed unless specified for a particular piece of equipment. Where required, the splice shall meet the ABS requirements in 4-8-3/9.19 and 4-8-4/21.23. The splice shall stagger the connections of each conductor. The splice kit shall provide for a watertight connection that incorporates crimped conductor connections, epoxy resin, and heat shrink jackets. Taping is not an acceptable alternative.

Where cables pass through areas where they may be damaged, they shall be protected by steel pipe or other Owner approved conduit.

Connection of ships cables shall use crimp lugs, bolts, nuts, and lock-washers. Any sharp edges on these connections shall be filled with putty and then taped using Scotch 33 tape or better, or equivalent.

Connection of ship’s cables to equipment with incoming circuit breakers shall be connected to the line side of the circuit breakers.

Connection of ship’s cables to 110 or 220 volt lighting fixtures or low voltage monitoring sensors, may be lugged or may employ “scotch-lock” type twist-on type connectors.

Any damage to the cable outer jacket that occurs during cable installation shall be repaired by using a repair kit specifically designed for such purpose. Taping the cable jacket will not be acceptable. Where installation damage affects the conductor or conductor insulation, the entire cable shall be replaced.

Connection of ship’s cables by twisting together and taping is strictly prohibited. Removing strands from wire to fit a smaller lug is also prohibited.

Where cables are oversized to suit voltage drop conditions and cannot easily be connected to light fixtures or convenience outlets, a jumper wire of smaller size can be used to connect the fixture or outlet to the larger cables to the fixture. The jumper must be lugged on both ends and made with a bolted splice inside of the fixture or outlet enclosure. The jumper wire must be sized to be adequately protected by the circuit breaker feeding the oversized cable.

A single layer of cables shall rest on one hanger except that a second layer of smaller cables may be installed to fill in between larger cables to facilitate strapping of cables. If an additional layer of cables is required, it shall be supported on a second hanger bracketed a sufficient distance from the first to permit painting and inspection.

Cables shall not pass through watertight bulkheads below the waterline.

Cableway & Penetrations

Where cables pass through watertight/gastight decks and bulkheads, the penetrations shall be through multi-cable transit devices, RISE system, or threaded stuffing tubes. RISE and stuffing tube arrangements shall have the pipe extend at least 100 mm above and 50 mm below deck or insulation, and may need to be extended to accommodate A-60 or other fire boundary requirements. Where multi-cable transit devices or RISE systems are utilized, at least 20% spare space shall be provided for the future installation of cables.

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Where cables pass through non-watertight non-gastight bulkheads, decks, or platforms, the openings shall be fitted with collars which extend at least 100 mm above/below platforms and decks, and at least 50 mm from the surface of each side of bulkheads. If cables are to lay against the collar, a rubber or other softener shall be placed between the cables and the collar to prevent chafing.

Where cables penetrate weather decks with kickpipes, stainless steel kick pipes and stuffing tubes shall be installed that extend at least 250 mm above the deck.

Where single core cables penetrate equipment enclosures, bulkheads, or decks, cables for phases A/B/C must be routed through the same penetration. If this is not possible, single core cables must pass through non-magnetic materials.

All electrical cable to deck mounted motors and controls exposed on deck shall be adequately guarded the full run from deck to terminal box with pipe or other substantial protection.

Cable supports shall be spaced not more than 600 mm on horizontal and 500 mm on vertical runs

Steel hanger or flat bar not less than 5 mm thick with corrosion resistant finish shall be used for all cable hanger material. Painting shall be acceptable as a corrosion resistant material for interior locations.

Stainless steel or galvanized steel shall be used for weather deck and other wet locations. Bolts, nuts, and washers are to be cadmium plated for interior use and are to be stainless steel or bronze for exterior use.

Attachments to watertight bulkheads or decks by means of rivets or bolts penetrating the bulkhead or deck is not permitted. Studs or steel framing welded to the bulkhead or deck shall be used for mounting supports.

Mounting of equipment on shell plating is prohibited.

Horizontal cableways on deck shall be protected over their entire length by a removable steel cover at least 5mm thick to protect against damage.

Local runs of cable between cableways and devices may be supported by weldstud hangers or minimum 25mm flat bar, with maximum spacing of 500 mm between supports.

Cables shall be strapped, with stainless steel band straps at least 12 mm wide to every fourth hanger on horizontal runs and every hanger on vertical or bulkhead runs. Where cables are supported by the strapping, they shall be strapped on every hanger.

Cableways in cargo spaces or where stores and spare parts are handled shall be suitably protected where mechanical injury might occur. Cableways in cargo spaces shall not interfere with the existing clear height.

Identification

All electrical equipment shall be fitted with identification plaques that identify the equipment and the circuit from which it is powered. The plaques shall be lamicoid type, black phenolic plastic core with white cap for engraved lettering.

All new cables shall be fitted with cable identification tags, which indicate the circuit number of each cable, at each cable end, and at each junction or terminal box. Tags shall be stamped aluminum and shall not be painted.