Workscope
a. Pre Checks & readiness
1. Check availability of barge and arrange for mobilization
2. Arrange for high capacity industrial air compressor with sufficient lengths of hose and connectors
3. Arrange for bunkering and DO availability for compressor in use
4. Arrange for attendance of technician / assistant on the barge during operation of compressor
5. Preparing equipment for transfer one day before operation. Communication equipment Additional Wires, ropes, heaving lines, arranging personnel and boats for transfer
6. Notice given to harbor tug and pilot for standby at the base if require immediate mobilization
7. Mobilizing ISC & Yard personnel & equipment from Base to Site
8. JHA, Haz Task Permits & Toolbox meeting at the base prior mobilization
9. Disembark ISC personnel on vessel for preparation, i.e air reservoir using existing steam line, blanking of vents, fitting pressure gauges and fabricating flange connection (on base) for the air line delivery connection to the line
10. Anchor windlass preparation, opening vents and familiarizing with equipment
b. Connecting Air Hose from air compressor to the ships steam line
1. On board toolbox & planned operation including Job Hazard and Stop for Safety checks
2. Picking up air hose and connecting to the ships steam line. Connect air hoses of sufficient length from air compressor to the windlass steam line
3. Check on the air compressor & start the compressor
4. Open the valve to fill the reservoir. Check pressure gauge to determine the required pressure
5. Check all connections and flanges fittings
6. Confirm anchor chain position, check stoppers in place, brakes tightened.
7. Confirm gears disengaged and operate the windlass in off load mode
8. Once checked all in order, Stand By for anchor work
c. Prepare Stand By anchor
1. Ensure sufficient air pressure in the line
2. Check anchor chain and over side conditions
3. When all clear, engage the gears, open the brakes.
4. Heave in the chain slightly to clear the link from the chain stopper
5. Once link is clear open up the bow stopper
6. Lower the chain to ensure free movement
7. The standby anchor will be used to hold the vessel if/when required
d. Lifting & Lowering the anchor chain to run the twists / kinks along the chain
1. Ensure sufficient air pressure in the line
2. Check anchor chain and over side conditions
3. When all clear, engage the gears, open the brakes
4. Heave in the chain slightly to clear the link from the chain stopper
5. Once link is clear open up the bow stopper
6. Lower the chain to ensure free movement
7. Commence picking up the chain to clear the twists on the chain
8. The procedure of lifting & lowering the anchor chain is carried out repeatedly to untwist / un-kink the chain.
9. GPS positions to be monitored throughout the operation
e. Using the workboat to assist with untwisting
1. At times during the operation where the twist does not open up due the size of the chain clump the workboat is to be utilized
2. The chain clump is lowered to the water level
3. The brakes are tightened and the stoppers put in place. The gears remain clutched in
4. When clear instructions are given, a line is lowered from the vessel to the workboat
5. The boat maneuvers close to the chain and the line secured to the section of chain
6. Once that is complete the boat stays clear from the anchor chain
7. Resume operations, confirm the gear is engaged.
8. Open the brakes and clear the stoppers
9. Lower and/or heave in the anchor chain as required while checking the attached line to clear the twists
10. When the chain clears, the process is repeated until all the twists are clear
f. Securing the anchor upon completion
1. When all the twists and kinks are clear to about two shackles in the water the anchor chain is then laid out again onto the sea bed
2. At this point it, consider lowering the standby anchor to put additional holding if required
3. Paying out the cable to the required length of chain, the anchors are then again re-secured.
4. Brakes are tightened, bow stoppers put in place and the gears disengaged
5. If standby anchor is deployed, recover and secure
6. Once complete re-check stoppers in place, brakes on the windlass, all secure & disengage the gears
7. Test the windlass and winch offload and verify all in order,
8. Stop air compressor wash and shutdown the mooring systems forward
9. Stop the air systems, shut vent openings (if applicable) and secure forward
10. To observe the vessel, note the anchor holding position.
g. Completing anchor operations
1. Drain the steam line & remove pressure in the system
2. Disconnect the hoses and secure
3. Housekeeping tools and equipment
4. Stand down operations
END
ISC LAYUP
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