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IDC School Flash Cards > NAVOSH 5-5-2 Heat Stress Monitoring Program > Flashcards

NAVOSH 5-5-2 Heat Stress Monitoring Program Flashcards

Heat Stress Stuff

1
Q

Who performs Heat Stress monitoring?

A

The IDC

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2
Q

Define Heat Stress

A

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

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3
Q

When can Heat injury/death occur?

A

When heat stress is excessive and exceeds and increases the body’s temperature.

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4
Q

What environmental factors cause Heat Stress?

A

Thermal Radiation
Ventilation
Humidity
Air/sea Water Temp

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5
Q

What is thermal radiation?

A

Sun
Heat source (incinerator, engines, generators, laundry dryers, etc.)

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6
Q

What is Ventilation air flow?

A

Forced air systems: Intakes outside air into workspaces (Spot cooling)

Forced Exhaust systems: Removes stagnant or excess contaminants in the air. (red Devil Blowers)

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7
Q

What is Humidity?

A

Moisture in the air
-Steam leaks
-Bilge water
-Condensation

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8
Q

What is Air/sea Water Temp?

A

Intake valves that allow sea water or outside air to be utilized for cooling shipboard equipment.
(Refrigeration Units, Engines, Generators, Evaporators)

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9
Q

What is acclimatization?

A

The act of becoming accustomed to temperature or new environment.

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10
Q

How long does it typically take to become acclimatized?

A

Usually 3 weeks or more.

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11
Q

Do past exposures to heat injury affect the induviduals ability to adapt?

A

Yes

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12
Q

What health conditions affect Heat Stress?

A

G6PD
Sickle Cell Trait

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13
Q

What are personal factors associated with Heat Stress?

A

Past exposure
Change in health status
Exercise and fluid intake
Medication
Alcohol Intake
Lack of Sleep
Drugs

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14
Q

Where does Heat Stress typically occur on the ship?

A

Machinery Spaces
Laundries
Sculleries/Galleys
Incinerator Room
Flight Decks

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15
Q

What are causes and contributors to Heat Stress?

A

-Steam and Water Leaks
-Boiler Air Casing Leaks
-Missing/Deteriorated Thermal Insulation
-Ventilation Deficiencies
-Weather Conditions
-Arduous Operations

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16
Q

What does PHEL stand for?

A

Physiological Heat Exposure Limits

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17
Q

How many curves does PHEL have?

A

6 Curves.

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18
Q

What do the curves indicate?

A

They compare the WBGT index and degree of work rate to determine max exposure time to the heat.

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19
Q

Who established the PHEL curves and work rates?

A

Industrial Hygienist and NAVSEA.

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20
Q

Who determines individual Heat Stress locations?

A

The Industrial Hygienist.

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21
Q

What are some examples of Routine Operations?

A

Light work
-Sweeping down
-Painting
-Cleaning lube oil strainers

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22
Q

What are some examples of Non-routine Operations?

A

Ventilation being secured.

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23
Q

What do you need to do for Non-routine operations?

A
  1. Use the next higher PHEL
  2. Increase normal watch stander work rate and minor equipment casualty.
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24
Q

What does ECC stand for?

A

Evacuation Control Center drills

25
Q

What are some examples of Heavy work loads?

A

-Replacing large valves.
-Cleaning lube oil sumps
-Disassembly and reassembly of large or heavy equipment.

26
Q

What does Stay Time mean?

A

The maximum allowable time personnel may work in Heat Stress conditions.

27
Q

What is recovery time?

A

Minimum of twice the Stay time OR 4 hours (whichever is shorter)

28
Q

What are Fuel Combustion Gasses (Stack Gas)?

A

May accumulate in a space due to inadequate ventilation or machinery malfunction.

29
Q

What are the Symptoms of Stack Gas?

A

-Causes vasodilation of peripheral blood vessels.
-Watery eyes
-Dyspnea
-Paresthesia
-Mild sensation of alcohol intoxication

30
Q

What do you do if the sailor has 2 or more symptoms of stack gasses?

A

Reduce exposure limits by determining new PHEL OR divide current PHEL stay time by 3.

31
Q

When does the MDR provide Heat Stress training?

A

Initially during Indoc and annually.

32
Q

What film is played during Heat Stress training?

A

“Play it Cool: Heat Stress Prevention Afloat”. for all Hands.

33
Q

What must heat stress training include at a minimum?

A

-Hazards
-Symptoms of Exposure
-Heat Stress First-Aid
-Heat Stress Monitoring
-Causes of Heat Stress

34
Q

How soon do Heat Stress Monitors need to recieve the training?

A

12 weeks upon assignment.

35
Q

What additional training requirements do you need for Heat Stress training?

A

-Complete Heat Stress Survey
-Complete watch station 318 of the Safety Programs Afloat PQS (NAVEDTRA 43704)

36
Q

What are the 3 ways to report Heat Stress injuries?

A

-Naval Safety Center using Web Enabled Safety System (WESS)
-Naval Disease Reporting System (NDRS)
-Medical Event Report format in no access to NDRS

37
Q

What must the Heat Stress surveyor ensure?

A

WB<DB; GT ≥ DB; and WB<WBGT<GT

38
Q

Who reviews Heat Stress surveys and who do they get routed to?

A

-Reviewed by SMDR
-Routed to XO/CO.

39
Q

Routine reports with no administrative action need to be reported by when?

A

Submit at 8 o’clock reports (2000 time frame)

40
Q

Who maintiains the reports and for how long?

A

SMDR maintains them for 1 year.

41
Q

Who assigns and qualifies supervisors to review DB temperatures?

A

Engineer Officer

42
Q

Where do you place Hanging Dry Bulbs?

A

-Permanently mounted at watch and work stations where heat stress exist.
-Temporarily mounted at temp work sites.
- Must be properly shielded from radiant heat

43
Q

How accurate does the Hanging Dry Bulb need to be?

A

Within 5 degrees of the WBGT.
If not must be repositioned.

44
Q

How often do you read the DB temperature?

A

Every 4 hours if <85℉
Hourly if:
-Heat Casualties
-DB temp >85℉

45
Q

How do you record the DB temperature?

A

Reviewed by the supervisor once each watch or shift
-Circle in red temps >100℉, and notify supervisor immediately.

46
Q

What is the WBG Index?

A

A measurement of environmental conditions. Is a weighted average of DB, WB, GT.
-Helps determine PHEL

47
Q

What are the 2 types of WBGT?

A

RSS-220-WBGT Meter
QUESTemp 48N Heat Stress Monitor

48
Q

If the watch/workstation length is <4hrs and DB is ≥100℉…

A

PHEL I-III

49
Q

If the watch/workstation length is >4hrs and DB is ≥90℉…

A

PHEL I-III

50
Q

If the DB is ≥85℉…

A

PHEL IV-VI

51
Q

WHen are you required to do a Heat Survey?

A

-Heat casualty
-During a drill ≥3hrs in duration
-CO’s discretion

52
Q

When do you do follow on surveys?

A

If the DB temp increases by more than 5℉ from HDB in previous survey.

53
Q

What is the acceptable range for calibration checks?

A

100.0℉ + or -0.2℉

54
Q

What are the survey procedures for the RSS-220?

A

-Wait 5min initially and 3min for subsequent readings.
- Ensure ventilation is normal and DB/WB face air flow
-Hold at chest level 1’ away from body.

55
Q

What are the survey procedures for the Questemp 48N?

A

Wait 10 min initially and when switching workspaces, 5 min subsequent.
-Hold at chest level 18” away from body.

56
Q

Why must ships with Automated Heat Stress Systems (AHSS) have at least 2 portable WBGT?

A

In case one breaks or malfunctions.

57
Q

Who do you route the Survey to?

A

Immediately notify Supervisor (DH) who will notify the CO.

58
Q

What 3 things does the Supervisor (DH) notify the CO with?

A

-Condition
-PPE
-Action to reduce heat
(Will all be noted on the Heat Stress Monitoring Sheet)

IDC School Flash Cards (11 decks)

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