Heat Stress Monitoring Program Flashcards
1
Q
What instruction covers Heat Stress Monitoring?
A
OPNAVINST 5100.19
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
3
Q
4 Environmental Factors Causing Heat Stress:
A
- Thermal Radiation
- Ventilation
- Humidity
- Air/Sea Water Temperature
4
Q
Thermal Radiation
A
Sun
Heat Sources:
- Generators
- Dryers
- Incinerator
- Engines
5
Q
What are the 2 Types of Ventilation?
A
- Forced Air Systems
- Forced Exhaust Systems
6
Q
Forced Air Systems
A
Intake of outside air into workspace
(spot-cooling)
7
Q
Forced Exhaust Systems:
A
Removes stagnant or increased concentrations of hazardous fumes or contaminants
(Red Devil Blowers)
8
Q
Humidity:
A
Moisture in the air:
- Steam Leaks
- Bilge Water
- Condensation
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
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
11
Q
How long does acclimation of the body normally take to occur?
A
3 weeks
12
Q
7 Personal Factors Associated with Heat Stress:
A
- Past exposure to heat injuries
- Current health status (G6PD & SCT)
- Dehydration
- Medication
- Alcohol
- Lack of sleep
- Drugs
13
Q
5 Most Common Locations of Heat Stress Conditions
A
- (S)cullery (PHEL V)/Galleys
- (L)aundry
- (F)light deck
- (I)ncinerator room
- (M)achinery spaces
14
Q
What are the 6 causes and contributors to Heat Stress Conditions?
A
- Steam and Water Leaks
- Ventilation Deficiencies
- Arduous Operation
- Boiler Air Casing Leaks
- Missing/Deteriorated Thermal Insulation
- Weather Conditions
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
16
Q
Who establishes the PHEL and Work Rates?
A
Industrial Hygienist and NAVSEA
17
Q
Who determines the individual heat stress condition locations?
A
Industrial Hygienist
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
19
Q
What are examples of routine operations?
A
Light work including:
- sweeping
- painting
- cleaning lube oil strainers
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
21
Q
What does ECC Exercises mean?
A
Evacuation
Control
Center drills
22
Q
What are examples of Heavy Work Load?
A
- replacing large valves
- cleaning lube oil sumps
- disassembly/reassembly of large or heavy equipment
23
Q
What PHEL Curve is assigned to Heavy Workload?
A
PHEL VI (6)
24
Q
What is Stay Time?
A
Work/Rest Cycles
Maximum allowable time personnel may work in heat stress conditions at a given workload
25
What is Recovery Time?
Minimum of twice the stay time as determined by the PHEL chart or 4 hours which ever is shorter
26
What is Fuel Combustion Gases?
**Stack Gas**
Combustion gases which may accumulate in a space due to inadequate ventilation or machinery malfunction
27
What are the Physiological Effects of exposure to Stack Gas?
* intensified by heat stress conditions
* Causes vasodilation on peripheral blood vessels which results in further impairment of the cardiovascular system
28
What action should you take if someone is showing S&S from stack gases?
* 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
29
What are the 4 S&S of stack gas?
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
30
How often must Heat Stress Training be conducted?
* During INDOC
* annually thereafter
31
Who must provide heat stress training?
SMDR
32
5 Training requirements for the Heat Stress Program
1. Hazard
2. Causes
3. Symptoms
4. First Aid
5. Monitoring
33
Heat Stress Monitors must receive training within how many weeks upon assignment?
12 weeks/3 months
34
What PQS must be completed for Heat Stress surveyor watch station?
318
35
Where can personnel qualifications standards be found?
NAVEDTRA 43704
36
How do you report heat stress injuries?
Accident & Injury Report
37
Reports to the Naval Safety Center should be made using:
Web Enabled Safety System (WESS)
38
All Navy heat stress related injuries should be reported through what system?
Naval Disease Reporting System (NDRS)
39
What do you use to report A&I if your command does not have access to NDRS?
Medical Event Report
40
All heat stress monitoring reports will be reviewed by ______ for inaccuracies and QA checks.
SMDR
41
Supervisor or Engineering Officer of the Watch (EOOW) does what?
* makes notation of any existing problems
* corrective actions implemented
42
Prior to drills the drill supervisor must be informed of what?
STAY TIMES
43
Who are Heat Stress Surveys routed to for their comments and required actions, if any?
XO/CO
44
Routine Heat Stress reports with no administrative controls are required to be submitted at?
8 o’clock reports
45
Heat stress surveys that have reduced Stay Times must be routed through who?
Chain and CO
46
ALL REPORTS will be maintained by the SMDR for how long?
1 year
47
Dry Bulb Thermometer Function
- 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
Placement of Hanging Dry Bulb
* **_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
DB Thermometer must be within how many degrees of the WBGT meter?
5 ºF
50
Dry Bulb Thermometers must be read and recorded hourly if:
* Heat Casualties
* If DB temperature exceeds 85°F
51
If not within 5 ºF of the WBGT, the dry bulb thermometer shall be
inspected & repositioned or replaced
52
If DB temperature does not exceed 85°F how often is it read?
Every 4 hours for manned spaces
53
Recording of DB Temperatures
| (Routine ops)
* Record on log sheet
* Reviewed by supervisor once each watch or shift
54
Circle in red if DB temperatures is…
100ºF or higher
55
What 3 things do you do for high DB Temperatures?
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
Dry bulb temperature sensor (ambient):
Temperature measured with alcohol-in-glass thermometer whose bulb is kept dry and shielded from radiation
57
Wet bulb temperature sensor (humidity):
Temperature measured with a thermometer, wet wick is fitted closely over the bulb
58
Globe (radiant) temperature sensor:
An integration of radiant and convective heat transfer, heating or cooling effects of air movement
59
WGBT Index
A measurement of environmental conditions (heat stress). Consists of a weighted average of dry bulb, wet bulb, and globe temperatures
60
What's the purpose of calculating the WBGT Index?
Helps to determine the PHEL
61
What are the 2 only approved WBGT meter/monitors that can be used for Heat Stress?
1. RSS-220: WBGT Meter
2. QUESTemp 48N: Heat Stress Monitor
62
What 3 Conditions Require Monitoring?
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
When a survey resulted in a PHEL stay time less than the duration of the watch/workstation time then…
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
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…
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
Equation to determine WBGT Index:
(0.1 x DB)+(0.7 x WB)+(0.2 x GT)
## Footnote
**Pg 108**
66
What 3 other conditions require heat stress monitoring
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
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
6.4 volts
68
How do you hold the RSS-220?
At chest level
1 foot away from the body
69
How do you hold the QUESTemp 48N?
Chest level 18 inches away from the body
70
RSS-220 requires you to wait how long for initial and subsequent readings
Initial: 5min
Subsequent: 3min
71
QUESTemp 48N requires you to wait how long for initial and subsequent readings
10 min after turning the monitor on
5min between sites
72
Calibration for RSS-220
Acceptable range is 100.0 + or - 0.2 degrees Fahrenheit, if the meter is operating properly
73
What do you do with exposure limits that are less than the watch period?
circle in red
