PROCESSES USED BY THE USCG correct answers 1. DEMPS (Diesel Engine Maintenance
Program)
2. CATCAMPAR (Caterpillar Computer Aided Marine Performance Analysis Report) (certified
CAT tech rep required)
3. ODR (Operating Data Recorder)
4. Round Sheets
*A snap shot of engine condition correct answers Engine Performance Tests
TESTS:
1. When overhaul break-in period complete
2. When engine reaches ____of stated hours
3. Every ____ operating hours
*During tests, engines should be operated at ______ of CG rated load
*L/O and J/W should be within __degrees of normal operating temps
*RPM and Load should be duplicated correct answers 50%, 500, 80-90%, 5
DEMPS correct answers • Full power trials
• Observation of engine operating characteristics
• Periodic SPECTRA CHEMICAL ANALYSIS (L/O)
• Observation of trends of engine operating parameters
• Physical inspection of engine components
DEMP Performance Monitoring Indicators, basic readings correct answers 1. cylinder
compression pressure
2. cylinder firing pressure
3. cylinder exhaust pressure
, 4. crankcase vacuum
5. intake manifold pressure
6. exhaust backpressure
7. lube oil consumption
*If exhaust pyrometers are installed on ea. Cylinder, then monitor them also
DECM (Diesel Engine Condition Monitoring Program)
An additional aid for DEMPS correct answers • Full power groom
• Electronic signature analysis
• Component inspections
• Full power trials
• Oil analysis
• Component replacement
• On-line monitoring
*DECM has been applied to all ALCO engines
*class specific maintenance procedure cards
A 486-computer running Windows 3.1x along with specialized ODR software correct answers
ODR *ODR will record automatically as long as it is turned on
*Info downloaded on a disk monthly and sent to NAVSEA Philadelphia, then sent back to the
cutter (87' only)
Info downloaded on a disk monthly and sent to NAVSEA Philadelphia, then sent back to the
cutter (87' only) correct answers Trend Recording
Event Recording
Dynamic Recording
Alarm Recording
Trip Recording