6-55. Asbestos   waste   must   be   stored   for disposal   in   what   type   of   sealed container   as   a   minimum? 1. Impermeable   metal   containers 2 . Plastic    containers 3. Plastic   bags 4. Impermeable   double   bags 6-56. A   large,   open   container   of   asbestos insulation   scraps   has   been   stored in   a   space   to   await   packaging   for disposal,   but   exposure   probably   is less   than   the   PEL. You   should place   warning   labels   on   the containers  with  which  of  the following   warnings   as   a   minimum? 1. “Danger”   only 2. “Cancer   and   lung   disease hazard”   only 3. “Danger,   contains   asbestos fibers.   Avoid   creating   dust. Cancer  and  lung  disease  hazard” only 4. “Danger,   contains   asbestos f i b e r s . Cancer   and   lung disease   hazard.   Respirators and   protective   clothing required” 6-57. Personnel  working  on  insulation  in an   area   where   exposure   to   airborne fibers   probably   exceeds   the   PEL should   wear   which   of   the   following protective  gear  as  a  minimum? 1. Protective   clothing   only 2. A   half-mask   respirator   only 3. Protective   clothing   and   goggles 4. Protective   clothing   and   a   full- face   respirator 6-58. Your   crew   has   completed   emergency repairs   on   insulation,   cleaned   the area,  and  you  have  done  a  visual inspection. What   officer,   if   any, also  must  inspect  the  area  before it   may   be   used   again? 1. The   safety   officer 2 . The   gas-free   engineer 3. The   engineer   officer 4. None 6-59. What   noise   protective   measure   is   a last   resort   in   the   event   others   are not   effective   enough? 1. Hearing   protective   devices 2. Administrative   controls 3. Engineering    controls 4. Warning  signs 6-60. Baseline   measurements   of   noise throughout   a   ship   normally   are taken  at  what  intervals  of  time? 1. 12   months 2. 18   months 3. 24  months 4. 30  months 6-61. All  personnel  will  be  given  what type   of   hearing   test   when   they enter   the   Navy? 1. Preliminary 2. Comprehensive 3. Baseline 4 . Diagnostic 6-62. You  should  wear  double  hearing protection   when   the   noise   level   in your   area   exceeds   what   maximum d e c i b e l    l e v e l? 1. 62  dB 2. 104  dB 3. 116  dB 4 . 128  dB 6-63. Personnel   who   work   continuously   in noise  hazardous  areas  will  be  given hearing   tests   at   least   how   often? 1. Every  year 2.    Every  2  years 3. Every   6   months 4. Every  month 6-64. Heat   stress   surveys   are   used   to determine   what   information   about   a given  area? 1. The  safe  limits  of  human exposure   to   heat 2. The  amount  of  heat 3. The  changes  in  temperature  over a   period   of   time 4. The   number   of   persons   who suffer   from   heat   stress 46