HEAT 2 Flashcards
who Establish and enforce an effective heat stress policy that ensures personnel heat exposures are limited per this chapter except in an operational emergency.
a. Commanding Officer
who (1) Ensure heat stress injuries are reported per reference (a).
(2) Ensure the program is evaluated at least annually.
b. Safety Officer
who (1) Review all heat stress surveys to determine obvious inaccuracies, reduced PHEL stay times, and any personnel protective actions being taken. Submit heat stress surveys that result in reduced stay times to the commanding officer daily for review. Maintain originals of all heat stress surveys for 1 year.
(2) Provide training as required in paragraph 5.
(3) Report all cases of heat stress related injuries to the safety officer.
(4) Conduct heat-stress surveys of all spaces not under engineering as needed.
MDR
who (1) Ensure DB thermometers are installed and maintained (3) Assign and qualify supervisors to review DB temperatures or access AHSS readings and take the required action (5) If maintenance or repair is required, record all heat stress related deficiencies on the CSMP and TSIMS (CVNs only).
Engineer Officer or Reactor Officer
who (1) Obtain prompt medical attention for personnel who exhibit heat stress symptoms.
(2) Follow recommended work practices and procedures for controlling heat stress hazards. (3) Complete heat stress training upon reporting aboard.
h. All Hands
WBGT index formula.
WBGT = (0.1 x DB) + (0.7 x WB) + (0.2 x GT)
hanging dy bulb temperature reading range
0-150 degrees farenheit
Where are DB thermometers be placed
- must be permanently mounted at watch and workstations throughout the ship where heat stress conditions may exist.
- Placement of the DB thermometers may be in or out of the ventilation air stream but must be hung at least 2 feet from any supply ventilation terminal or opening.
- hung with a non-heat conducting material such as plastic tie-wrap or string (never hang with metal wire) and positioned to minimize the influence of any adjacent or local heat or cold sources (avoid direct contact between thermometer and hot or cold structural surfaces).
if the WBGT is greater than 5 degrees farenheit or more than the DB thermometer, which one is considered to not be an accurate reading
The dry bulb thermometer
Do you calibrate a DB thermometer?
No.
if found inaccurate, the hanging DB must be replaced or validated
If the dry bulb is found to be inaccurate, how do you validate it
by aligning the etch mark with the freezing point (32 degrees Fahrenheit).
At a minimum, where shall dry bulbs be placed
main machinery spaces, auxiliary machinery spaces, emergency diesel spaces and other engineering spaces containing heat sources, in laundries (not required for self-help laundries), sculleries, galleys, bake shops, and steam catapult spaces.
what about areas where repairs or maintenance are being performed in a heat stress area.
DB thermometer must be temporarily mounted
what about non-air conditioned spaces, not normally manned, in which personnel may have to periodically work or conduct maintenance, such as storerooms.
DB thermometer must be temporarily mounted
How is an AHSS unit installed in regards to ventilation ducts
AHSS unit should be located in relation to the ventilation duct such that airflow across the sensors does not exceed 600 feet per minute (fpm).
How is an AHSS unit installed in regards to orientation
AHSS unit is to be positioned vertically with the sensors at the top of the unit and with a minimum clearance of 4 inches above the sensors and a minimum clearance of 6 inches on the right side of the AHSS unit.
How do you calibrate an AHSS unit
Calibration is not required for the AHSS but the sensors must be validated quarterly by ships force as required by the equipment MRC.
1.
(a) Every 4 hours for manned spaces if DB temperatures do not exceed 85 degrees Fahrenheit.
(b) Every hour for manned spaces if DB temperatures exceed 85 degrees Fahrenheit.
(c) Every hour at temporary installations where the DB temperature exceeds 85 degrees Fahrenheit during repair or maintenance operations
Hanging DB temperatures must be recorded on a prepared paper log form or green log book and reviewed by the space supervisor. How long must logs be kept
1 year.
If a DB temperature reaches or exceeds 100 degrees Fahrenheit (watch or work length 4 hours or less), or 90 degrees Fahrenheit (watch or work length greater than four hours), or 85 degrees Fahrenheit (in the scullery) per subparagraph 3c(3)(a), the space supervisor must circle (in red) the DB reading and immediately notify the watch supervisor (e.g., engineering officer of the watch (EOOW), division officer). The watch supervisor must direct heat stress surveys to be conducted and enforce the resulting stay times.
3.
When surveying a work or watch station using the WBGT meter, how must the surveyor must position the meter? where in relation to ventilation
where the worker or watchstander would normally stand or where the intended work is to be performed, with ventilation arranged to provide normal ventilation at that location
The heat stress surveyor must conduct the first WBGT measurement in the workspace after the meter has been in the space for how long to enable it to equilibrate to the surrounding area
(doesn’t specify which monitor this is)
10 minutes
As the meter is moved from one site to another, the meter should be at each site for how long to allow for stabilization
(doesn’t specify which monitor this is)
5 minutes
How do you know if the meter has stabilized
doesn’t specify which monitor this is
when each sensor has stabilized, the surveyor should watch the 0.1 degree Fahrenheit digit of the display. When the 0.1 degree Fahrenheit digit stops changing or when it oscillates between a larger or smaller value, the sensor has stabilized
Where do you record readings for the RSS-220
OPNAV 5100/17
Where do you record readings for the Questemp 48N or AHSS
may use a computer printout for the heat stress survey sheet.
who must retain heat stress surveys sheets and for how long
MDR for a year
When must you conduct a heat stress survey
- whenever the temperature from a permanently mounted hanging DB thermometer reaches or exceeds the following temperature requirements:
PHEL I through III
Watch/Work length 4 hours or less DB => 100 degrees Fahrenheit
Watch/Work length greater than 4 hours DB => 90 degrees Fahrenheit
PHEL IV through VI DB = 85 degrees Fahrenheit - In any space when a heat injury (heat exhaustion or heat stroke) occurs
- Prior to conducting engineering casualty control (ECC) drills
- In any unmanned space when personnel must perform work and DB temperatures exceed 90 degrees.
- In any space when the commanding officer determines that a heat stress situation may occur.
- As required for follow-on surveys
how long must a drill set be to trigger a heat stress survey
3 hours
when do you do a follow-on surveys for engineering spaces on non-nuclear, steam-powered ships and for laundries, sculleries, galleys, steam catapult spaces and arresting gear spaces
*Follow-on surveys where WB and DB temperatures are not monitored and recorded each hour.
Follow-on surveys must be conducted prior to the end of the current manned watch or work period as indicated in the previous survey. Follow-on surveys must continue to be conducted each watch and work period until the conditions specified in subparagraph 3c(4) no longer exist.
(PHEL I through III
Watch/Work length 4 hours or less DB => 100 degrees Fahrenheit
Watch/Work length greater than 4 hours DB => 90 degrees Fahrenheit
PHEL IV through VI DB = 85 degrees Fahrenheit)
when do you do a follow-on surveys for engineering spaces on non-nuclear, steam-powered ships and for laundries, sculleries, galleys, steam catapult spaces and arresting gear spaces
*Follow-on surveys where WB and DB temperatures are monitored and recorded each
hour at manned workstations.
*If the WBGT survey resulted in a PHEL stay time greater than the duration of the normal watch or work period,
a change from the normal watch and work time is not required. Follow-on surveys are not required unless the DB temperature increases by 5 degrees Fahrenheit or more or WB temperature increases by 3 degrees Fahrenheit or more from the DB and WB temperatures recorded from the previous survey. The DB and WB temperature must be measured each time using the same instrument or device. The WBGT meter, motorized psychrometer, or commercially available hygrometer may be used to measure DB and WB temperature. If the DB temperature drops below the value in subparagraph 3c(4) and return to a normal watch and work time is desired, then a survey must be conducted to ensure conditions allowing a return to normal watch and work periods have been reestablished
when do you do a follow-on surveys for engineering spaces on non-nuclear, steam-powered ships and for laundries, sculleries, galleys, steam catapult spaces and arresting gear spaces
- Follow-on surveys where WB and DB temperatures are monitored and recorded each hour at manned workstations.
- If the WBGT survey resulted in a PHEL stay time less than the duration of the manned watch, or work period
the watch and work time must be adjusted to reflect the new stay times indicated by the WBGT. Follow-on surveys are not required unless the DB temperature increases by 5 degrees Fahrenheit or more or WB temperature increases by 3 degrees Fahrenheit or more from the DB and WB temperatures recorded from the previous survey. The DB and WB temperature must be measured each time using the same instrument or device. The WBGT meter or commercially available hygrometer may be used to measure DB and WB temperature. If the DB temperature drops below the value in subparagraph 3c(4) and return to a normal watch and work time is desired, then a survey must be conducted to ensure conditions allowing a return to normal watch and work periods have been reestablished
do you have to perform a heat stress survey to restore the normal watch is not required at the end of the ECC drill set
no
*unless a DB temperature at any manned watch station exceeds the appropriate value
Supervisors must direct personnel standing watch or working in spaces in reduced stay times (except in operational emergencies as directed by the commanding officer) to leave the heat stress environment prior to the expiration of the PHEL stay time. Describe the room they must move to
cool, dry area conducive to rapid physiological recovery (an area with a DB temperature of 80 degrees Fahrenheit or less).
How to calculate the recovery time
the length of recovery time must be equal to twice the exposure time or 4 hours whichever is less
What page can you find this list?
(1) Drink more water than satisfies thirst, but not more than 1.5 liters per hour
(2) Eat three well-balanced meals daily.
(3) Get adequate rest. At least 6 hours of continuous sleep per 24 hours is recommended.
(4) Do not take salt tablets unless under the direction and supervision of the MDR.
(5) Limit intake of caffeinated drinks.
88
according to the navy, under routine operations, core temperature may rise to what temperature but will return to normal with the appropriate recovery time.
102.2 degrees Fahrenheit
examples of light work
sweeping down, painting, adjusting automatic combustion controls, changing and cleaning lube oil strainers, and bleeding hydraulic oil.
Examples of heavy work
manually chipping and wire brushing in preparation for painting, handling cargo and supplies, replacing large valves, cleaning lube oil sumps, and disassembly or reassembly of large or heavy equipment
cureve selection options
routine
non routine
ECC exercises
heavy work
Which curve selection option? What is a consequence of this?
performing operations in out-of-normal plant configurations, increases in normal watchstander work rate, and minor equipment casualties
Non-routine Operations
require the use of the next higher number curve
If, after determining personnel stay times, you have a heat case, what do you do next
the stay times for all other personnel in the space must immediately be reduced by recalculating stay times using the next numerically higher PHEL curve
Sxs of stack gas exposure
- Eyes watering or burning, or both.
- Difficulty breathing
- Tingling or numbness of the tip of the tongue, tip of the nose, finger tips and toes.
- Generalized sensation mild alcoholic intoxication without alcohol consumption within the past 24 hours.
*If two or more of the above symptoms or symptom per subparagraph 4b(7)(a)4 (even if alone) are exhibited, then exposure limits must be reduced
who must provide heat stress training for all newly reporting personnel? When and how often
The MDR muse provide training during indoctrination and annually thereafter
What must be included in the MDR directed training that is given during indoc
(1) heat stress health hazards
(2) symptoms of excessive heat stress exposure,
(3) heat stress first aid procedures,
(4) heat stress monitoring, and
(5) causes of heat stress conditions
What PQS is completed to be labeled as a heat stress surveyor and conduct WBGT surveys? In what time frame do they need to complete this?
Heat-stress surveyors assigned to perform WBGT surveys must be trained and qualified using the heat stress monitor watch station 318 of the engineering collateral PQS, NAVEDTRA 43704 within 12 weeks of assignment.
What models of WBGT meters do we have in the fleet
RSS-220 and Questemp 48N
How often are the WBGT meters calibrated? (both of them)
3 years
RSS-220:
You just turned the power swith to “CHECK” and listened for the aspirating fan. You see the digits on the display.
Now you are turning the measurement function swith to DB, WB, GT, and WBGT? how long must you wait for the initial DB reading?
5 for the initial reading
RSS-220:
After the waiting 5 minutes for the initial reading, how long must you wait for the subsequent readings
3 minutes.
RSS-220:
As the meter is moved from one site to another, the meter should be at each site for how long to allow for stabilization of the first DB reading in the series to be taken.
5 minutes
