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NAVOSH > Heat Stress Monitoring Program > Flashcards

Heat Stress Monitoring Program Flashcards

1
Q

What instruction covers Heat Stress Monitoring?

A

OPNAVINST 5100.19

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2
Q

What is Heat Stress?

A
  • Any combination of air temp, thermal radiation, humidity, air flow, & workload that stress the body as it attempts to regulate temperature
  • Heat Stress becomes excessive when the body’s capability to adjust is exceeded
  • Can cause heat injury/death
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3
Q

4 Environmental Factors Causing Heat Stress:

A
  1. Thermal Radiation
  2. Ventilation
  3. Humidity
  4. Air/Sea Water Temperature
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4
Q

Thermal Radiation

A

Sun

Heat Sources:

  • Generators
  • Dryers
  • Incinerator
  • Engines
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5
Q

What are the 2 Types of Ventilation?

A
  1. Forced Air Systems
  2. Forced Exhaust Systems
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6
Q

Forced Air Systems

A

Intake of outside air into workspace
(spot-cooling)

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7
Q

Forced Exhaust Systems:

A

Removes stagnant or increased concentrations of hazardous fumes or contaminants
(Red Devil Blowers)

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8
Q

Humidity:

A

Moisture in the air:

  • Steam Leaks
  • Bilge Water
  • Condensation
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9
Q

Air/Sea Water Temperature:

A

Intake Valves that allow seawater/outside air to be utilized for cooling for shipboard equipment systems

  • Refrigeration units
  • Engines
  • Generators
  • Evaporators for fresh water consumption
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10
Q

What is Acclimatization?

A

-The act of becoming accustomed to temperature or new environment
-The body becomes more efficient in coping with heat stress
Occurs gradually

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11
Q

How long does acclimation of the body normally take to occur?

A

3 weeks

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12
Q

7 Personal Factors Associated with Heat Stress:

A
  1. Past exposure to heat injuries
  2. Current health status (G6PD & SCT)
  3. Dehydration
  4. Medication
  5. Alcohol
  6. Lack of sleep
  7. Drugs
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13
Q

5 Most Common Locations of Heat Stress Conditions

A
  1. (S)cullery (PHEL V)/Galleys
  2. (L)aundry
  3. (F)light deck
  4. (I)ncinerator room
  5. (M)achinery spaces
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14
Q

What are the 6 causes and contributors to Heat Stress Conditions?

A
  1. Steam and Water Leaks
  2. Ventilation Deficiencies
  3. Arduous Operation
  4. Boiler Air Casing Leaks
  5. Missing/Deteriorated Thermal Insulation
  6. Weather Conditions
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15
Q

What is PHEL?

A

Physiological Heat Exposure Limit

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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16
Q

Who establishes the PHEL and Work Rates?

A

Industrial Hygienist and NAVSEA

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17
Q

Who determines the individual heat stress condition locations?

A

Industrial Hygienist

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18
Q

Who is responsible for creating a locally prepared form using the OPNAVINST 5100.19 as a guide for necessary information and routing instructions?

A

Local command

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19
Q

What are examples of routine operations?

A

Light work including:

  • sweeping
  • painting
  • cleaning lube oil strainers
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20
Q

What are examples of non-routine operations?

A
  • Increase in normal watch stander work rate, and minor equipment casualty
  • Use the next higher PHEL when determining stay time
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21
Q

What does ECC Exercises mean?

A

Evacuation

Control

Center drills

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22
Q

What are examples of Heavy Work Load?

A
  • replacing large valves
  • cleaning lube oil sumps
  • disassembly/reassembly of large or heavy equipment
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23
Q

What PHEL Curve is assigned to Heavy Workload?

A

PHEL VI (6)

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24
Q

What is Stay Time?

A

Work/Rest Cycles

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

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25
Q

What is Recovery Time?

A

Minimum of twice the stay time as determined by the PHEL chart or 4 hours which ever is shorter

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26
Q

What is Fuel Combustion Gases?

A

Stack Gas
Combustion gases which may accumulate in a space due to inadequate ventilation or machinery malfunction

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27
Q

What are the Physiological Effects of exposure to Stack Gas?

A
  • intensified by heat stress conditions
  • Causes vasodilation on peripheral blood vessels which results in further impairment of the cardiovascular system
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28
Q

What action should you take if someone is showing S&S from stack gases?

A
  • Reduce exposure limits if 2 or more of the exposure symptoms are detected
  • Determine a new PHEL or divide current PHEL stay time by 3
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29
Q

What are the 4 S&S of stack gas?

A
  1. Watery eyes
  2. Dyspnea
  3. Tingling or numbness of the tip of the tongue, tip of the nose, finger tips, or toes
  4. Mild sensation of alcohol intoxication
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30
Q

How often must Heat Stress Training be conducted?

A
  • During INDOC
  • annually thereafter
31
Q

Who must provide heat stress training?

A

SMDR

32
Q

5 Training requirements for the Heat Stress Program

A
  1. Hazard
  2. Causes
  3. Symptoms
  4. First Aid
  5. Monitoring
33
Q

Heat Stress Monitors must receive training within how many weeks upon assignment?

A

12 weeks/3 months

34
Q

What PQS must be completed for Heat Stress surveyor watch station?

A

318

35
Q

Where can personnel qualifications standards be found?

A

NAVEDTRA 43704

36
Q

How do you report heat stress injuries?

A

Accident & Injury Report

37
Q

Reports to the Naval Safety Center should be made using:

A

Web Enabled Safety System (WESS)

38
Q

All Navy heat stress related injuries should be reported through what system?

A

Naval Disease Reporting System (NDRS)

39
Q

What do you use to report A&I if your command does not have access to NDRS?

A

Medical Event Report

40
Q

All heat stress monitoring reports will be reviewed by ______ for inaccuracies and QA checks.

A

SMDR

41
Q

Supervisor or Engineering Officer of the Watch (EOOW) does what?

A
  • makes notation of any existing problems
  • corrective actions implemented
42
Q

Prior to drills the drill supervisor must be informed of what?

A

STAY TIMES

43
Q

Who are Heat Stress Surveys routed to for their comments and required actions, if any?

A

XO/CO

44
Q

Routine Heat Stress reports with no administrative controls are required to be submitted at?

A

8 o’clock reports

45
Q

Heat stress surveys that have reduced Stay Times must be routed through who?

A

Chain and CO

46
Q

ALL REPORTS will be maintained by the SMDR for how long?

A

1 year

47
Q

Dry Bulb Thermometer Function

A
  • Measures the ambient air temperature at work sites where heat stress conditions exist
  • Serves as an indicator for further heat stress monitoring by the use of a WBGT meter
48
Q

Placement of Hanging Dry Bulb

A
  • Shall be permanently mounted at watch and work stations where heat stress may exist
  • May be temporarily mounted to monitor heat conditions at temporary work sites
  • Must be properly shielded from radiant heat levels or other influencing (heat/cold) factors
49
Q

DB Thermometer must be within how many degrees of the WBGT meter?

A

5 ºF

50
Q

Dry Bulb Thermometers must be read and recorded hourly if:

A
  • Heat Casualties
  • If DB temperature exceeds 85°F
51
Q

If not within 5 ºF of the WBGT, the dry bulb thermometer shall be

A

inspected & repositioned or replaced

52
Q

If DB temperature does not exceed 85°F how often is it read?

A

Every 4 hours for manned spaces

53
Q

Recording of DB Temperatures

(Routine ops)

A
  • Record on log sheet
  • Reviewed by supervisor once each watch or shift
54
Q

Circle in red if DB temperatures is…

A

100ºF or higher

55
Q

What 3 things do you do for high DB Temperatures?

A
  1. Circle in red 100ºF or higher DB temperatures
  2. Notify supervisor immediately
  3. Heat Stress Monitor shall monitor all workstations within that space with WBGT Meter
56
Q

Dry bulb temperature sensor (ambient):

A

Temperature measured with alcohol-in-glass thermometer whose bulb is kept dry and shielded from radiation

57
Q

Wet bulb temperature sensor (humidity):

A

Temperature measured with a thermometer, wet wick is fitted closely over the bulb

58
Q

Globe (radiant) temperature sensor:

A

An integration of radiant and convective heat transfer, heating or cooling effects of air movement

59
Q

WGBT Index

A

A measurement of environmental conditions (heat stress). Consists of a weighted average of dry bulb, wet bulb, and globe temperatures

60
Q

What’s the purpose of calculating the WBGT Index?

A

Helps to determine the PHEL

61
Q

What are the 2 only approved WBGT meter/monitors that can be used for Heat Stress?

A
  1. RSS-220: WBGT Meter
  2. QUESTemp 48N: Heat Stress Monitor
62
Q

What 3 Conditions Require Monitoring?

A
  1. PHEL I through III: when work length is 4 hours or less and DB is equal or greater than 100°
  2. PHEL I through III: when work length is greater than < 4 hours and DB is equal or greater than 90°
  3. PHEL IV through VI and DB is equal or greater than 85°
63
Q

When a survey resulted in a PHEL stay time less than the duration of the watch/workstation time then…

A

adjustment of the watch/workstation will be made. No further survey is required unless the DB temp increases by 5 degrees or returns to normal.

64
Q

If the survey resulted in a stay-time greater than the duration of the normal watch/work period and did not require a change from the normal watch/workstation time then…

A

Follow-on surveys IS NOT required, unless the DB temperature increases by more than 5° from the hanging dry bulb temperature in the previous survey

65
Q

Equation to determine WBGT Index:

A

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

Pg 108

66
Q

What 3 other conditions require heat stress monitoring

A
  1. In any space, where a heat casualty occurs
  2. A drill that exceeds 3 hours in duration
  3. When directed by the CO
67
Q

After turning the QUESTemp 48N ON, ensure the battery voltage displayed during the power-on sequence is less than or equal to ____ if not replace or recharge the batteries

A

6.4 volts

68
Q

How do you hold the RSS-220?

A

At chest level

1 foot away from the body

69
Q

How do you hold the QUESTemp 48N?

A

Chest level 18 inches away from the body

70
Q

RSS-220 requires you to wait how long for initial and subsequent readings

A

Initial: 5min

Subsequent: 3min

71
Q

QUESTemp 48N requires you to wait how long for initial and subsequent readings

A

10 min after turning the monitor on

5min between sites

72
Q

Calibration for RSS-220

A

Acceptable range is 100.0 + or - 0.2 degrees Fahrenheit, if the meter is operating properly

73
Q

What do you do with exposure limits that are less than the watch period?

A

circle in red

NAVOSH (9 decks)

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