Response to Question to Work Item 27.pdf

USCGC MUNRO (WHEC-378W) DRYDOCK AVAILABILITY 2011

76 (Rev-0) listed in the following paragraphs:

• 3.3.4 (Initial visual inspection).

• 3.4.1 (Seal face wear inspection).

3.1.2 The concerned work area is the area around the two propulsion shaft mechanical and inflatable seals, and stern tubes. CG Dwg 378 FRAM-W 243-27 illustrates the shafting arrangement and the location of shaft seal.

NOTE

The U.S. distributor of this equipment is Wartsila-Lips (formerly known as John Crane Marine), 3617 Koppens Way, Chesapeake, VA 23323. The contact telephone number is 757-558-3625; telefax is 757-558- 3627. For the purpose of this specification John Crane and Wartsila-Lips may be considered.

3.1.3 Technical Representative. The Contractor shall provide the services of a Tech Rep, who is familiar with the Wartsila shaft seal system equipment/system, to accomplish the following tasks – on site:

• Provide manufacturer's information, software, and tools pertinent to the equipment/system.

• Assist with proper repair methods, and ensure compliance with manufacturer's procedures and standards during disassembly, inspection, repair, modification, calibration, and reassembly of the equipment/system.

3.1.3.1 Deleted.

3.1.3.2 The Contractor shall submit the name of the Tech Rep to the COTR at the Arrival Conference.

3.1.4 The inflatable seal must be joined (vulcanized) in place on the shaft. This vulcanizing process requires special equipment, which is not supplied by the Coast Guard. The Contractor shall provide the special equipment and the services of a Wartsila Technical Representative to vulcanize the inflatable seal.

3.1.5 Unless otherwise stated, all requirements below apply to both the port and starboard shaft mechanical and inflatable seals.

3.1.6 In the presence of the Coast Guard Inspector, inspect all affected equipment and systems (including those subject to interference/removal) to document the existing condition. Submit a Condition Found Report for each set of seals noting any equipment or system discrepancies.

3.2 Safety

3.2.1 Do not enter or reach into the propeller shaft/stern tube seal area unless the shafting is stopped and locked in position.

3.2.2 Do not rotate either shaft while its inflatable seal is inflated.

3.2.3 Do not adjust the alignment of the seal unless the turning gear is engaged.

3.2.4 Confirm that the inflatable seal is not pressurized. The installed air lines should be disconnected during operational test.