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NAVOSH > Heat Stress Monitoring Program > Flashcards

Heat Stress Monitoring Program Flashcards

1
Q

What is heat stress?

A

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

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2
Q

when does heat stress become excessive

A

when the body’s capability to adjust is exceeded.

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3
Q

list the factors causing heat stress

A

thermal radiation
ventilation
humidity
air/sea water

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4
Q

sources of thermal radiation

A 
sun 
heat sources (incinerators, engines, generators, dryers..)
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5
Q

sources of ventilations

A

forced air systems

forced exhaust systems

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6
Q

sources of humidity

A

steam engines
bilge water
condensation

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7
Q

examples of air/sea water temperature

A

intake valves that use outside air/water for cooling of shipboard equipment

e.g. refrigerator units, engines, generators, evaporators

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8
Q

define acclimatization

A

the act of being accustomed to temperature or new environment
the body becomes more efficient in coping with heat stress

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9
Q

how long does acclimatization usually take

A

usually 3 weeks or more

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10
Q

what are some personal factors contributing to heat stress

A 
past exposures to heat injuries 
current health status and use of medication 
exercise and fluid intake 
medication 
alcohol intake 
lack of lseep 
drugs
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11
Q

areas of the ship with common heat stress conditions

A 
machinery spaces 
laundry 
sculleries 
incinerator room 
flight decks
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12
Q

what are some contributors to heat stress

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

what is a PHEL Chart

A

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

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14
Q

who established the PHEL curves and work rates

A

Industrial Hygienist and NAVSEA when a class of ships is designed and place into service

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15
Q

who determines the individual heat stress condition locations

A

industrial hygienist

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16
Q

4 classifications for assignment of phel curves

A

routine operations
non routine operations
ECC exercises
heavy work load

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17
Q

stay time (work/rest cycles)

A

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

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18
Q

how do you decide recovery time?

A

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

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19
Q

definition of fuel combustion gases (stack gas)

A

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

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20
Q

what increases the physiological effects on exposure to stack gas

A

heat stress conditions

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21
Q

how does heat stress increase physiological effects of stack gas

A

vasodilatation on peripheral blood vessels which results in further impairment of the cardiovascular system

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22
Q

signs and sx of stack gas

A

water eyes
dyspnea
tingling or numbness of the tip of the tongue, tip of the nose, finger tops or toes
mild sensation of alcohol intoxication

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23
Q

what are actions if signs and sx of stack gas are present

A

reduce exposure limits if two or more of the exposure symptoms are detected
determine new PHEL using table B2-A-5 or divided current PHEL stay time by 3

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24
Q

training requirement periodicity for heat stress

A

MDR must provide training for new check ins at indoc, and annually thereafter
Film “Play it cool: heat stress prevention afloat”

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25
Q

minimum training must include

A 
hazards
sx of exposure
heat stress first aid
heat stress monitoring 
causes of heat stress
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26
Q

heat stress monitors must receive training within how many weeks of assignment

A

12 weeks

27
Q

which PQS must heat stress monitors complete

A

318 of the safety programs afloat personnel qualifications standard, NAVEDTRA 43704

28
Q

heat stress injuries required reporting avenues

A

1) accident and injury report
2) WESS report
3) NDRS (Naval Disease Reporting System)
4) Medical event report if command does not have access to NDRS.

29
Q

who reviews the heat stress monitoring reports

A

SMDR for inaccuracies and QA checks. recommendations based on crew health status

30
Q

who makes notation of any existing problems and corrective actions implemented

A

Supervisor or Engineering Officer of the Watch (EOOW)

31
Q

heat stress surveyor must check to ensure what

A

WB < DB, GT >/= DB, and WB < WBGT < GT

32
Q

The drill supervisor must be informed of what prior to Engineering Casualty or DC training team drills

A

current STAY TIMES

33
Q

routine reports where no administrative controls are required are submitted when…

A

8 o clock reports

34
Q

Heat stress surveys that have reduced Stay Times must be routed through who before work shift alterations occur

A

the chain and CO notification achieved

35
Q

ALL REPORTS are maintained for how long?

A

by the SMDR for one year

36
Q

SAMS generated reports are authorized and can be maintained on file for what inspections

A

periodic inspections by ISIC or higher authority

37
Q

Evaluation equipment elements: Dry Bulb Thermometer

A

measures the ambient air temperature at works where heat stress conditions exist.
indicator for further heat stress monitoring by the use of a WBGT meter

38
Q

Placement of Hanging Dry Bulb

A

permanently mounted at watch or work stations where heat stress conditions exist.
may be temporarily mounted.
must be properly shielded from radiant heat levels or other influencing (heat/cold) factors.

39
Q

accuracy of dry bulb thermometer

A

must be within 5 degrees F of the WBGT meter to be representative of the workspace temperature

if not within 5 degrees F of the WBGT, the dry bulb thermometer shall be re positioned to ensure representative temperature

40
Q

reading of DB temperatures normal periodicity

A

every 4 hours for manned spaces if DB temp does not exceed 85 degrees

41
Q

DB temperatures must be read and recorded hourly in these instances

A

heat casualties

if DB temperature exceeds 85 degrees F

42
Q

Recording of DB temperatures: Routine

A

recorded on log sheet

reviewed by supervisor once each watch or shift

43
Q

Recording of DB temperatures: high temperatures

A

circle in red 100 degrees F or higher DB temperatures
notify supervisor immediately
heat stress monitor shall monitor all workstations within that space with WBGT meter

44
Q

Dry Bulb Temperatures shall be recorded on what during the WBGT monitoring

A

Heat Stress Monitoring Sheet

44
Q

Dry Bulb Temperatures shall be recorded on what during the WBGT monitoring

A

Heat Stress Monitoring Sheet

44
Q

Evaluation Equipment Individual Elements: Heat Stress Meter

A

independently measures DB temp sensor (ambient), Web Bulb sensor (humidity), globe (radiant), WBGT index.

44
Q

Purpose of the Heat Stress Meter

A

helps determine the physiological Heat exposure limit (PHEL) and environmental heat stress conditions by computing the WBGT index.

44
Q

types of Heat Stress Meters

A

only approved by WBGT meter/monitors can be used:

RSS-220 WBGT meter
QUESTemp 48N Heat stress monitor

45
Q

required monitoring conditions

A

all manned watch/workstations within the space whenever the temperature form a permanently mounted hanging DB thermometer reaches or exceeds requirements.

46
Q

required monitoring temperature requirements: PHEL I through III

A

when watch work length is 4 hours or less and DB is equal or greater than 100 degrees.

47
Q

required monitoring temperature requirements PHEL I through III when watch/workstations is greater than 4 hours and DB is equal to or greater than 90 degrees

A

EVALUATE THIS CARD

48
Q

required monitoring conditions outside of PHEL requirements

A

any space where a heat causality occurs
during a drill that exceeds 3 hours in duration (not required in areas not affected by the drill)
when directed by the commanding officer

49
Q

acceptable range for calibration checks (RSS-220)

A

acceptable range is 100.0 + or - .2 degrees F if the meter is operating properly.

50
Q

wait how long for initial DB reading and how long for subsequent reading (RSS-220)

A

5 min initial and 3 min subsequent

51
Q

DB/WB should face air flow T or F? (RSS-220)

A

True

52
Q

How far do you hold WBGT meter away from chest level (RSS-220)

A

approximately 1 foot away from the body

53
Q

QUESTemp 48N: battery voltage less than or equal to how many volts indicates a replacement or recharge of batteries

A

6.4

54
Q

QUESTemp 48N: sensors require how many minutes after turning the monitor on to initial reading

A

10 min

55
Q

QUESTemp 48N: if the meter is moved from one site to another, the meter should be at each site for how many minutes to allow for stabilization?

A

5 min

56
Q

QUESTemp 48N: how far away from chest level do you hold from the body

A

18”

57
Q

Automated Heat Stress System (AHSS) must be mounted in what position

A

so that they indicate the most accurate representative temperature for the area where workers and watch standers spend the majority of their time

58
Q

Is calibration required for the AHSS?

A

No.

59
Q

What is the equation to determine WBGT index:

A

(0.1 x DB) + (0.7 x WB) + (0.2 x GT)

NAVOSH (8 decks)

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