SPLOPS module 6

Question 0

Most detection read-out is done ?

Answer 0

in real time

Question 1

Monitoring equipment helps you determine what 3 things?

Answer 1

appropriate PPE
safe areas and evacuation zones
control tactics

Question 2

what is the most important initial check on an instrument?

Answer 2

the battery check

Question 3

What is relative response?

Answer 3

when an instrument reading is higher or lower than the actual concentration of vapors or gases present.

Question 4

The time it takes the instrument to obtain the sample and produce readings is called what?

Answer 4

Response time.

Question 5

UL and FL markings mean what?

Answer 5

intrinsically safe for class 1 division 1 groups ABCD.

Question 6

Explosion proof labels mean?

Answer 6

reactions are contained within enclosures.

Question 7

What is the sampling procedure while using a sample line?

Answer 7

1 to 2 seconds per ft of hose.

Question 8

Definition of accuracy?

Answer 8

average of all measurements fall within an acceptable predetermined interval from the true value.

Question 9

Definition of precision?

Answer 9

grouping of separate readings around a calculated average.

Question 10

what are the three different scales for a CGI?

Answer 10

PPM
% LEL
% gas

Question 11

CGI’s with IR capability can read what?

Answer 11

CO2 and CH3 levels in concentrations above 5,000PPM.

Question 12

An appropriately set CGI low level alarm is set at what percent of the cal gas?

Answer 12

10%

Question 13

What gas is required for proper functioning of a CGI since it requires combustion of the vapor or gas its detecting?

Answer 13

Oxygen

Question 14

ambient air for calibrating and 02 sensor should be what %?

Answer 14

20.9%

Question 15

oxygen enriched atmospheres are what %?

Answer 15

greater than 23.5%

Question 16

Detector tubes detect what?

Answer 16

only if a chemical is present

Question 17

Although detector tubes are calibrated to 1 material it may respond how?

Answer 17

to other materials that have similar structure and reactivity.

Question 18

How should detector tubes be stored?

Answer 18

left in the their original box.

Question 19

The aspiration pump for detector tubes must be calibrated how often?

Answer 19

on a quarterly basis.

Question 20

A negative response for a detection tube may be more informative than a positive one why?

Answer 20

Since in can exclude number of potential chemical contaminants.

Question 21

Another name for radiation survey instruments commonly found in fire departments today is called what?

Answer 21

Ludlam meter.

Question 22

Gamma radiation is measured in what?

Answer 22

mR/hr or uR/hr - roentgens.

Question 23

alpha and beta radiation is read in what?

Answer 23

CPM- counts per minute

Question 24

Transport packaging containing radioactive material is read how?

Answer 24

millirem/ hr @ 1 meter from the surface of the box.

Question 25

Primary disadvantage of a dosimeter is?

Answer 25

gives measurements of radiation that ALREADY has been received.

Question 26

PID's are designed to detect what?

Answer 26

organic vapors or gases in low PPM range.

Question 27

PID's determine what?

Answer 27

if there are high or low concentrations of s chemical present.

Question 28

Definition of ionization potential?

Answer 28

the energy required to move the OUTTER MOST electron from the atom or nucleus.

Question 29

How is ionization potential (IP) expressed?

Answer 29

Electron volts.

Question 30

PID's readouts in regards to IP are in what measure?

Answer 30

PPM.

Question 31

PID readings of 5 PPM or more of an unknown gas or vapor mean what?

Answer 31

Indicate need for protective clothing and breathing apparatus.

Question 32

Advantage of FID vs PID?

Answer 32

FID's are not restricted by IP because it burns the actual material allowing higher PPM and allow identification of the gas or vapor.

Question 33

FID's measure reading are in what?

Answer 33

PPM

Question 34

what gas or vapor must be present in order for the FID to work?

Answer 34

oxygen.

Question 35

what 2 modes do FID's work in?

Answer 35

Survey and gas chromatography.

Question 36

What is survey mode with a FID?

Answer 36

translates organic vapors into concentration of PPM.

Question 37

What is gas chromatography mode?

Answer 37

the sample can be identified by seperating it into GC columns and the chemicals retention time.

Question 38

What is retention time?

Answer 38

the amount of time a substance remains within the column of the GC .

Question 39

In order to use the FID's GCs function what has to be known?

Answer 39

A general idea what gases or vapors may be present.

Question 40

What are the simplest kits in order to test for hazards?

Answer 40

Test papers and or kits.

Question 41

What are the basic rules for detection devices? (7)

Answer 41

1. prioritize monitoring- measure 02 levels first. 2. select to appropriate instrument 3. absence of evidence is evidence of absence. 4. never assume only 1 hazard is present. 5. use one instrument to confirm another 6. interpret readings in more than 1 way 7. establish action levels.- (unknowns have a 25% LEL.)