3-8. You  can  determine  the  true combustion   efficiency   of   a   boiler by   which   of   the   following   means? 1. 2. 3. 4. Watch   the   condition   of   the   fire and   stack Inspect   boiler   for   air   casing leaks Conduct  bottom  and  surface blows  and  maintain  proper boiler   chemistry Maintain   proper   fuel   oil pressure 3-9. Excessive   bearing   wear   can   best   be prevented  by  which  of  the  following means? 1. Maintain   lube   oil   cooler   outlet temperature   between   120°   and 130”. 2. Inspect  bearing  wear  according to   prescribed   PMS   procedures 3. Purify   lube   oil   storage   tanks weekly 4. Sample   lube   oil   daily 3-10. The   efficiency   of   a   condenser   and its   component   auxiliaries   will   be reduced   by   which   of   the   following actions? 1. Use  minimum  amounts  of  cooling water 2. Maintain   a   unifom   flow   of steam   to   the   air   ejectors 3. Recirculate    condensate e x c e s s i v e ly 4. Maintain   minimum   operational speeds   for   auxiliary   pumps 3-11. When,   if   ever,   are   you   permitted   to disable   a   safety   device   on operating   machinery? 1. When   training   personnel 2. While   lighting   off   the engineering   plant 3. While   conducting   ECC   drills 4. Never 3-12. The   posting   of   engineering department   safety   precautions   in   a conspicious   and   accessible   place   is the   responsibility   of   what o f f i c e r ( s ) ? 1. The   engineer   officer 2. T h e    d i v i s i o n    o f f i c e rs 3. T h e    s a f e t y    o f f i c e r 4. The   commanding   officer 3-13. When   engineering   personnel   work outside   the   engineering   department, who   has   the   responsibility   to   train them   and   enforce   safety precautions? 1. The   engineering   division o f f i c e r 2. The LCPO 3. The MPA 4. The   department   head   controlling the   operation 3-14. What   is   the   purpose   of   securing schedules? 1. They   provide   a   time   effective way   to   secure   the   engineering plant 2.   They   ensure   the   engineering plant   is   not   secured   too quickly 3. They   provide   a   means   to determine   watch   qualifications 4. They   increase   the   life   cycle   of machinery 3-15. Warm-up   and   securing   schedules   are NOT   required    for    which    of    the following   ships? 1. Noncombatant   ships 2. Reserve   combatant   ships 3. Auxiliary   ships 4. Ships  covered  by  EOSS 1 7