ESWS Study Guide for EA Division PDF

ESWS STUDY GUIDE FOR EA DIVISION. State the methods of steering the ship From The SCC on the bridge, ASU, LCU’s, FADPU, Emergency Hand Pump State the number and purpose of the HPU’s. 4 HPU’s, power plant to move the rudders. State the location and function of the Local Control Unit (LCU) 4 LCU...

ESWS STUDY GUIDE FOR EA DIVISION. State the methods of steering the ship From The SCC on the bridge, ASU, LCU’s, FADPU, Emergency Hand Pump State the number and purpose of the HPU’s. 4 HPU’s, power plant to move the rudders. State the location and function of the Local Control Unit (LCU) 4 LCU’s one for each HPU all located against the fwd bulkhead in Compt. 4-442-0-E (Aft Steering) State the purpose of the Ram and Follow-Up Assemblies 2 Rams: What the hydraulic fluid moves, which in turn rotates the rudders through the Rapson slide linkage (Tiller assembly). State the location and purpose of the Emergency Steering Hand Pumps Located between 1A and 1B HPU in Aft Steering, 30 turns =1 degree (to 1 rudder only). State the location and purposes of the Fill and Drain Electric Pump Located between all 4 HPU’s in the center of the space in Aft Steering, can transfer fluid to and from the storage to all the HPU head tanks, provides emergency steering to 1 rudder only. Discuss the various methods of steering control Computer Assisted Auto This mode functions as auto pilot system, allows personnel to enter heading orders and is the NORMAL U/W configuration Discuss the various methods of steering control Computer Assisted Manual This mode of operation allows an operator at the SCC or ASU to manually control the rudders by means of the manual steering wheel assembly. In computer assisted manual, all helm orders are passed through GEDMS to the LCU’s for machinery control. Discuss the various methods of steering control Backup Manual Allows the operator to initiate rudder orders using the manual steering wheel assembly on the SCC or ASU depending on which station is in control. In Back-up Manual all helm signals to the steering system are sent directly to the LCU’s and GEDMS is bypassed. Discuss the various methods of steering control Emergency Manual Generates four signals that cause a steering station transfer to the station at which the switch was pressed. Degrades the system to back-up manual mode. If buttons at the SCC and ASU are pressed simultaneously, control will default to bridge. Discuss the various methods of steering control Emergency Electric Fill and Drain Pump Unit (FDPU) contains an electric motor driven pump used to fill, flush, and transfer hydraulic oil for the steering gear machinery and for emergency steering operation. State the amount, location, and specifications of the Air Conditioning Plants and onboard the ship 5-200 ton R-134a York centrifugal A/C, 1 AC &1A AC=AUX-1, 2 AC&3AC=AUX2, 4=Shaft Alley. State the location and purpose of the Chill Water Pumps Aux 1(1 and 1A), Aux 2(2 and 3), Shaft Alley (4); move Chilled water throughout the ship. State the amount, location, and purpose of the Expansion Tanks 3 Tanks. Aux 1(1) Aux2 (2), Shaft Alley (3) State the location and purpose of the Chilled Water System The chilled water system is the largest system onboard, and is located throughout the ship from the most forward part of the ship to the farthest point aft; from the lowest point to the highest point, from port to stbd. It supplies 44° Chilled Water to the Spy Skids, FCU’s and FCA’s, NIXIE, sonar, Spy Arrays, and C&D. It then returns the warmed Chilled back to the AC plants to be re-cooled to 44°. How does chilled water system interface with the Electronic Cooling Skids Acts as a cooling medium for the de-mineralized water in the cooling skids State the amount, location specifications of the refrigeration units onboard the ship 2-1.5 ton R-134a York Rotary Refrigeration units, located on Reefer decks, next to Chill and Freeze Box. State the function of the following trash room equipment. 1. Pulper- shreds biodegradable material and sends it overboard. >3NM. 2. CMU-pressurizes, melts, and forms shredded plastic into compact pucks, to more easily store and offload once ashore. NEVER OVBD. 3. Plastic shredder- shreds plastic items into a more easily managed size to load into the CMU. NEVER OVBD. 4. Metal and glass shredder- shreds large pieces of metal and glass into pieces that makes it easier to sink to the bottom of the ocean and degrade. >12NM. State the type of distilling plant used onboard and the maximum daily distilling capacity Reverse Osmosis Distilling Plant, 12,000 GPD per unit, 24,000 gallons per day total State the location and basic operation of the ship’s distilling plants MER 1 Basic Operation- Feedwater to the RO unit is supplied by the fire main system through a strainer, to the heater to keep fire main above 35 degrees F, to centrifugal separator, continues to a 20 micron and 3 micron filters, and enters the suction side of the HP pump. HP pump supplies pressurized seawater (700-900 PSIG) to the RO module. The feed then flows through two parallel circuits into the RO modules, flows through an in-line brominator, and into potable water tanks. State the ship’s maximum storage capacity for potable water Approximately 15,628 GAL total (4- 4,000 gallon tanks in AUX 1) State the location of the Potable Water Pumps #1 and #2 are in Aux-1, Lower Level State the location and function of the Brominators Proportioning (inline) brominator in MER 1 and, Re-circ brominator in Aux 1 State the location and function of the Potable Water Risers Risers are located amidships one on port and one on Stbd side; used to receive and supply potable water via hoses. State the amount, location, and function of the Water Heaters 2 in Main-1; (personnel use), 1 in passageway next to Filter Clean Shop, Gaylord ventilation and final rinse sink use. What does RAST stand for? Recovery Assist, Securing, and Traversing Where is the RAST machinery room? Aft across from Aft Steering entrance What is the purpose of RAST? Aviation support