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unit 5 -5 heat stress Flashcards

1
Q

heavy work

PHEL?

A

manually chipping and wire brushing in preparation for painting,
handling cargo and supplies, replacing large valves, cleaning lube oil sumps,
disassembly or reassembly of large or heavy equipment.

set stay time at PHEL VI

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2
Q

define heat stress

A

any combination of air temp., thermal radiation, humidity, airflow, and work load which stress the body as it attempts to regulate temperature

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3
Q

factors that cause heat stress

A

environmental

personal

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4
Q

list all 4 environmental factors that cause heat stress

A

thermal radiation
ventilation
humidity
air/sea water temperature

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5
Q

list examples of thermal radiation

A 
sun
heat sources (incinerator, engines, generators, laundry dryers, etc)
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6
Q

list examples of ventilation- airflow

A

forced air systems
forced exhaust systems
red devil blowers?

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7
Q

list examples of humidity- moisture in the air

A

steam leaks
bilge water
condensation

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8
Q

list examples of air/sea water temperature

A

refrigeration units
engines
generators
evaporators for fresh water consumption

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9
Q

define acclimatization

A

act of becoming accustomed to temperature or new equipment

occurs gradually within 3 weeks

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10
Q

list personal factors contributing to heat stress

A 
past exposure
current health status
exercise and fluid intake
medication
alcohol intake
lack of sleep
drugs
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11
Q

what are the most common spaces on ship where heat stress injuries occur

A 
machinery spaces
laundries
sculleries (PHEL V)/ Galleys
incinerator room
flight decks
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12
Q

list the contributors to heat stress conditions aboard ship

A 
steam and water leaks
boiler air casing leaks
missing/ deteriorated thermal insulation
ventilation deficiencies
weather conditions
arduous operation
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13
Q

what does PHEL stand for

A

Physiological Heat Exposure Limit

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14
Q

what is a PHEL Chart used for

A

6 curves that compare WBGT INDEX and degree of effort or work rate to determine the maximum permissible exposure to the heat stress environment

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15
Q

who establishes the PHEL Curve and work rates

A 
industrial hygienist ( individual heat stress condition locations)
NAVSEA
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16
Q

who creates the heat stress form for a command

A

local command

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17
Q

define routine operations

A

light work include sweeping down, painting, cleaning lube oil strainers

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18
Q

define non-routine operations

A

using the next higher PHEL for stay times

increase normal watch stander work rate and minor equipment casualty

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19
Q

ECC Exercises

A

Evacuation Control Center drills

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20
Q

Define Stay time aka watch rotation

A

maximum allowable time personnel may work in heat stress conditions at a given workload

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21
Q

recovery time

A

minimum of twice the stay time as determined by the PHEL chart or 4 hours, whichever is shorter

22
Q

fuel combustion gases (stack gas)

A

combustion gases which may accumulate in a space due to inadequate ventilation or machinery malfunction

causes vasodilation on peripheral blood vessels which further impairs cardiovascular system

23
Q

signs and symptoms of fuel combustion gases

A

watery eyes
dyspnea
tingling or numbness of the tip pf the tongue, nose, fingers/toes
mild sensation of alcohol intoxication

if 2+ detected reduce exposure limits
uses tale B2-A-5 of divide PHEL stay time by 3

24
Q

who must provide heat stress training during indoc and annually

25
heat stress training at a minimum must include
``` hazard symptoms of exposure heat tress first aid heat stress monitoring causes of heat stress ```
26
Heat Stress Monitors must complete what training in what time frame
heat stress surveyor watch station 318 NAVEDTRA 43704 within 12 weeks upon assignment
27
what are the requirements for REPORTING heat stress injuries
- accident and injury report - report to Naval Safety Center using Web Enabled Safety System (WESS) - using Naval Disease Reporting System (NDRS) - use Medical Event Reporting format if CMD doesnt have access to NDRS
28
who is responsible for QA checks on heat stress surveys
SMDR | -
29
what is the ><= of temps you must ensure as a surveyor
- WB < DB <=GT | - WB < WBGT < GT
30
how must reduced stay times be routed
through chain and CO notification
31
how long are heat stress survey reports maintained
1 year by SMDR
32
who will make notation of any existing problems and corrective actions implemented
supervisor or engineering officer of the watch (EOOW)
33
where should hanging dry bulb thermometer be place
- permanently mounted where heat stress may exist - temp. mount at temp. work sites - properly shielded from radiant heat levels or influencing factors
34
dry bulb accuracy must be within ____ *F of _________. if not then what?
5 WBGT | -reposition thermometer
35
Dry bulb should be read every ___ hours for ___ spaces in DB temp does not exceed _____*F
4 hours manned 85*F
36
DB temp must be read and recorded hourly if
heat casualties | exceed 85*F
37
temperatures exceeding ___-*F and stay times _____ should be circled in red
100*F | less than watch period
38
dry bulb sensor measures
ambient temp
39
wet bulb temperature neasures
humidity
40
globe temp measures
radiant heat
41
WBGT Index measures
weighted average of DB, WB and GT
42
what is the WBGT INDEX calculation
(.1xDB) + (.7xWB) + (.2xGT). MUST NOT DIFFER MORE THAN .2
43
REQUIRED MONITORING CONDITIONS PHEL I-III
- WATCH ROTATION IS 4 HOURS OR LESS AND DB IS => 100*F | - WATCH ROTATION IS GREATER THAN 4 HOURS AND DB IS = OR GREATER THAN 90*F
44
REQUIRED MONITORING CONDITIONS PHEL IV-VI
DB = OR > THAN 85*F
45
REQUIRED MONITORING CONDITIONS
- HEAT CASUALTY OCCURS - DRILL SET THAT EXCEEDS 3 HOURS - DIRECTED BY CO
46
FOLLOW ON SURVEYS ARE CONDUCTED IF
DB INCREASE BY 5*F
47
HOW TO USE RSS-220 WBGT METER
WAIT 5 MINUTES FOR INITIAL READING AND 3 MINUTES FOR SUBSEQUENT READINGS HOLD AT CHEST LEVEL, 1 FT AWAY FOM BODY
48
HOW USE QUESTemp 48N
wait 10 min after turning on set 5 min at each site before reading hold at chest level, 18 inch away
49
what does AHSS stand for
Automated Heat Stress System
50
if ship has AHSS must have on board
a least 2 portable WBGT meters

SF IDC (39 decks)

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