1. DURING THE CONSTANT DOSAGE TEST, A READING OF LESS THAN
_____________________ IS LOW DOSAGE.

STATEMENT NO: 40

ANSWER: 1.4 LPM

2. AN INTERNAL LEAK AT THE VALVE HEAD INSIDE THE LUNG DEMAND MAY NOT BE
DETECTABLE WITH THE ____________________________________________.

A. POSITIVE PRESSURE LEAK TEST

B. NEGATIVE PRESSURE LEAK TEST

C. CONSTANT DOSAGE TEST

D. POSITIVE AND NEGATIVE PRESSURE LEAK TESTS

E. DEMAND VALVE TEST

STATEMENT NO: 42

ANSWER: D. POSITIVE AND NEGATIVE PRESSURE LEAK TESTS

3. WHEN USING A FACTORY PACKED REGENERATIVE CANISTER, INSURE THAT THE
EXPIRATION DATE IS IN PLACE AND THE STRING SEAL HAS NOT BEEN REACHED
PRIOR TO REMOVING THE END CAPS AND INSERTING THE CANISTER INTO THE
APPARATUS.

_______ TRUE _______ FALSE

STATEMENT NO: 83

ANSWER: FALSE (STRING SEAL IN PLACE & EXPIRATION REACHED)

4. THE WEARING HARNESS CONSISTS OF TWO ADJUSTABLE SHOULDER STRAPS WITH
_____________________________________________ AND A WAIST BELT.

STATEMENT NO: 87

ANSWER: DOUBLE SLIDE BUCKLES

5. _____________________ IS NOT TO BE USED TO CLEAN OR DISINFECT ANY
PARTS OF THE BG-174A.

A. COMPRESSED AIR

B. FORMALDEHYDE

C. ALCHOHOL

D. HAIR DRYER

E. CHLORINE BLEACH

STATEMENT NO: 60

ANSWER: C. ALCHOHOL

6. DURING THE WHISTLE ACTIVATION TEST, THE WHISTLE SHOULD ACTIVATE AT
APPROXIMATELY 600 PSI FOR A FOUR HOUR APPARATUS.

_______ TRUE _______ FALSE

STATEMENT NO: 44

ANSWER: FALSE (700-FOUR HOUR)

7. AN OLD DIAPHRAGM WHICH HAS LOST ITS FLEXIBILITY DUE TO AGE WILL
CREATE A _____________________________________.

A. LOW DOSAGE.

B. HIGH DOSAGE.

C. LOW OPENING PRESSURE.

D. HIGH OPENING PRESSURE.

E. PREMATURE OPENING OF THE DEMAND VALVE.

STATEMENT NO: 3

ANSWER: D. HIGH OPENING PRESSURE

8. A PREREQUISITE FOR THE SAFE USE OF AN OXYGEN BREATHING APPARATUS IS A
___________________________________________.

STATEMENT NO: 81

ANSWER: PROPER MAINTENANCE PROGRAM

9. BEFORE WASHING THE LUNG DEMAND VALVE ASSEMBLY, IT IS ABSOLUTELY
NECESSARY TO ISOLATE THE DEMAND VALVE.

_______ TRUE _______ FALSE

STATEMENT NO: 58

ANSWER: TRUE

10. PRIOR TO TESTING WHISTLE DURATION AND THE MANUAL CUT-OFF VALVE, TURN
OXYGEN CYLINDER ON, LIFT THE MANUAL CUT-OFF LEVER, OPEN THE CYLINDER
VALVE (WITH THE RZ-25 TESTER SET ON NEGATIVE PUMPING), AND START THE
STOP WATCH.

_______ TRUE _______ FALSE

STATEMENT NO: 53

ANSWER: FALSE (TURNED OFF...OPEN THE CYLINDER)

11. THE EXPIRATION DATE ON EACH FACTORY PACKED REGENERATIVE CANISTER
APPEARS AS A ROMAN NUMERAL AND YEAR.

_______ TRUE _______ FALSE

STATEMENT NO: 85

ANSWER: TRUE

12. IF THE OXYGEN CYLINDER IS RATED AT 2850 OR 3135 PSI, IT CAN BE
FILLED UP TO THESE PRESSURES ONLY.

_______ TRUE _______ FALSE

STATEMENT NO: 77

ANSWER: FALSE (2600 OR 2850)

13. IT IS VERY ESSENTIAL THAT AN ACCURATE RECORD BE KEPT OF EACH TEST
PERFORMED ON THE BG-174A WITH THE RZ - 25 TESTER.

_______ TRUE _______ FALSE

STATEMENT NO: 82

ANSWER: FALSE (VERY IMPORTANT)

14. THE ___________________________ SHOULD BE POSITIONED SO THAT THE
CHEST GAGE AND FLEXIBLE LINE ARE ISOLATED WHEN THE MANUAL CUT-OFF LEVER
IS LIFTED TO A 30 TO 45 DEGREE ANGLE FROM THE HORIZONTAL.

STATEMENT NO: 52

ANSWER: VALVE SCREW

15. THE TEST DATE IN MONTH AND YEAR IS STAMPED ON THE ____________ OF
ALL OXYGEN CYLINDERS.

A. NECK

B. SIDE

C. TOP

D. BODY

E. NONE OF THE ABOVE

STATEMENT NO: 71

ANSWER: C. TOP

16. THE WARNING WHISTLE SHOULD BE RETURNED TO THE MANUFACTURER FOR
OVERHAUL AFTER AT LEAST SIX YEARS USAGE.

_______ TRUE _______ FALSE

STATEMENT NO: 73

ANSWER: FALSE (NATIONAL MINE SERVICE)

17. THE BG-174A APPARATUS WILL NOT OFFER PROTECTION AGAINST
__________________ GASES ABSORBED THROUGH
_______________________________.

STATEMENT NO: 86

ANSWER: POISONOUS, YOUR SKIN

18. IF THE FACTORY PACKED DISPOSABLE ___________________________________ HAS EXPIRED, YET IS STILL FACTORY SEALED, IT CAN BE USED FOR TRAINING PROVIDED THAT THE CHEMICALS CAN BE HEARD RATTLING AROUND WHEN THE CANISTER IS SHAKEN AND THE CANISTER HAS NOT GAINED 10 OR MORE GRAMS IN WEIGHT.

STATEMENT NO: 94

ANSWER: RESCUE CANISTER

19. THE LUNG DEMAND DIAPHRAGM SHOULD BE REPLACED AFTER AT LEAST TWO
YEARS USAGE.

_______ TRUE _______ FALSE

STATEMENT NO: 67

ANSWER: FALSE (THREE)

20. THE PRESSURE GAGES ARE _______________ IN INCREMENTS OF 20 PSI AND
ARE ________________________ SO YOU CAN SEE THEM IN THE DARK, OR IN
OTHER CONDITIONS THAT LIMIT VISIBILITY.

STATEMENT NO: 89

ANSWER: MARKED, LUMINOUS

21. THE REFILLABLE TRAINING CANISTER IS MADE OF STAINLESS STEEL AND CAN
BE USED OVER AND OVER AGAIN AS LONG AS THE
________________________________________ ARE FRESHLY PACKED FOR EACH
USE.

STATEMENT NO: 92

ANSWER: ABSORBENT CHEMICALS

22. THE OXYGEN CYLINDER MUST BE PURGED AND VACUUMED BY A CERTIFIED
TESTING FACILITY EVERY FIVE YEARS.

_______ TRUE _______ FALSE

STATEMENT NO: 70

ANSWER: FALSE (TESTED)

23. THE O-RING UNDER THE LUNG DEMAND DIAPHRAGM SHOULD BE REPLACED AT
LEAST ONCE EVERY THREE YEARS.

_______ TRUE _______ FALSE

STATEMENT NO: 68

ANSWER: FALSE (SPEAKING DIAPHRAGM)

24. INSIDE THE REFILLABLE TRAINING CANISTER OS A SET OF BAFFLES DESIGNED
TO EXPOSE ____________________________________________OF THE CHEMICALS
TO THE EXHALED AIR.

STATEMENT NO: 93

ANSWER: MORE SURFACE AREA

25. ALL PARTS EXPOSED TO THE ____________________________________ OF THE
BG-174A MUST BE THOROUGHLY WASHED IN A GOOD DETERGENT/DISINFECTANT,
THOROUGHLY RINSED, AND DRIED AFTER EACH WEARING.

A. CIRCULATORY SYSTEM

B. RESPIRATORY SYSTEM

C. CIRCULATION SYSTEM

D. NERVOUS SYSTEM

E. SKELETAL SYSTEM

STATEMENT NO: 56

ANSWER: A. CIRCULATORY SYSTEM

26. THE BG-174A SHOULD BE STORED TO PROTECT AGAINST: DUST, SUNLIGHT,
HEAT, EXTREME COLD, EXCESSIVE MOISTURE, ____________________
_______________________, ___________________________________.

STATEMENT NO: 55

ANSWER: DAMAGING CHEMICALS, MECHANICAL DAMAGE

27. IF DURING TESTING, THE WHISTLE FAILS TO ACTIVATE AT THE PRESCRIBED
SETTING, THE WARNING WHISTLE SHOULD BE REMOVED FROM THE APPARATUS AND
RETURNED TO NATIONAL MINE SERVICE FOR COMPLETE OVERHAUL.

_______ TRUE _______ FALSE

STATEMENT NO: 45

ANSWER: FALSE (FOR ADJUSTMENT)

28. THE LUNG DEMAND VALVE ASSEMBLY CONTAINS THE ________________________,
_______________________________________________, LUNG DEMAND VALVE, AND
INHALATION AND EXHALATION VALVES.

STATEMENT NO: 95

ANSWER: DIAPHRAGM, PRESSURE RELIEF VALVE

29. HEAT BUILDUP WITHIN THE _______________________________ IS PRODUCED
WHEN YOUR EXHALED AIR FLOWS THROUGH THE REGENERATIVE CANISTER.

STATEMENT NO: 98

ANSWER: UNIT'S SYSTEM

30. THE FACE MASK, BREATHING HOSE ASSEMBLY, BREATHING BAG, AND
____________________________________ ARE PARTS EXPOSED TO THE
__________________________________ THAT MUST BE THOROUGHLY WASHED AFTER
EACH WEARING.

A. LUNG DEMAND VALVE ASSEMBLY, CIRCULATORY SYSTEM

B. LUNG DEMAND VALVE GROUP, CIRCULATION SYSTEM

C. LUNG DEMAND VALVE ASSEMBLY, CIRCULATION SYSTEM

D. LUNG DEMAND VALVE GROUP, CIRCULATORY SYSTEM

E. NONE OF THE ABOVE

STATEMENT NO: 57

ANSWER: D. LUNG DEMAND VALVE ASSEMBLY, CIRCULATORY SYSTEM

31. WHEN ________________________________ ARE REMOVED FROM THE BG-174A
FOR ANY REASON, THEY SHOULD NOT BE REUSED.

STATEMENT NO: 74

ANSWER: COPPER GASKETS

32. THE PRESSURE RELIEF VALVE IS A PART OF THE
_________________________________________________ THAT KEEPS OXYGEN FROM
BUILDING UP IN THE BREATHING BAG IF YOU USE LESS THAN THE UNIT
_______________________.

STATEMENT NO: 96

ANSWER: DEMAND VALVE ASSEMBLY, PROVIDES

33. THE ARE WHERE OXYGEN CYLINDERS ARE FILLED AND STORED MUST HAVE
ADEQUATE VENTILATION TO PREVENT A BUILDUP OF OXYGEN AND REDUCE THE
POTENTIAL FOR __________________.

STATEMENT NO: 99

ANSWER: FIRE

34. DURING THE CONSTANT DOSAGE TEST, THE BREATHING BAG IS DEFLATED, THE
RZ-25 TESTER IS SET TO RED DOSAGE, AND THE LOW PRESSURE WARNING WHISTLE
IS PLUGGED.

_______ TRUE _______ FALSE

STATEMENT NO: 28

ANSWER: FALSE (PRESSURE RELIEF VALVE COVER)

35. IF DURING THE WHISTLE DURATION/MANUAL CUT-OFF TEST, THE WARNING
WHISTLE SOUNDS LESS THAN 20 SECONDS,IT MAY NOT BE GIVING THE USER AN
ADEQUATE WARNING.

_______ TRUE _______ FALSE

STATEMENT NO: 48

ANSWER: TRUE

36. IF ALCHOHOL IS USED TO DISINFECT OR CLEAN, IT WILL DETERIORATE THE
RUBBER IN THE FACE MASK, HOSES, AND BREATHING BAG.

_______ TRUE _______ FALSE

STATEMENT NO: 61

ANSWER: FALSE (BREAK DOWN)

37. AN IMPROPER DISINFECTANT OR ONE THAT IS NOT DILUTED PROPERLY COULD
CAUSE THE _________________ OR _________________ PARTS TO DETERIORATE
PREMATURELY.

STATEMENT NO: 59

ANSWER: RUBBER, NEOPRENE

38. ON THE TOP OF THE OXYGEN CYLINDER IS A
___________________________________ KNOWN AS THE PRESSURE BURST CAP.

STATEMENT NO: 88

ANSWER: SAFETY DEVICE

39. THE SALIVA TRAP IS ON THE ____________________________ HOSE BECAUSE
IT MUST BE LOCATED ON THE __________________________________ OF THE
APPARATUS WHEN IT IS WORN SO THAT THE MOISTURE WILL SETTLE THERE.

STATEMENT NO: 97

ANSWER: INHALATION, LOWEST PART

40. THE WARNING WHISTLE IS DESIGNED TO ACTIVATE WHEN THE PRESSURE IN THE
OXYGEN CYLINDER HAS DROPPED TO APPROXIMATELY __________________________
OF THE ORIGINAL CYLINDER PRESSURE.

A. 20 PERCENT

B. 25 PERCENT

C. 10 PERCENT

D. 20 TO 25 PERCENT

E. NONE OF THE ABOVE

STATEMENT NO: 43

ANSWER: A. 20 PERCENT

41. ONLY OXYGEN CYLINDERS RATED AT ____________ CAN BE FILLED TO 3135
PSI.

STATEMENT NO: 78

ANSWER: 2850+

42. THE TEMPERATURE OF THE AIR USED TO DRY PARTS SHOULD NOT GO ABOVE 140
DEGREES F (60 DEGREES C).

_______ TRUE _______ FALSE

STATEMENT NO: 62

ANSWER: TRUE

43. ONLY USP MEDICAL OXYGEN IS TO BE USED TO FILL THE BG-174A OXYGEN
CYLINDERS.

_______ TRUE _______ FALSE

STATEMENT NO: 75

ANSWER: TRUE

44. DURING THE FILLING CYCLE, THE TEMPERATURE IN THE OXYGEN CYLINDER
WILL RISE IN PROPORTION TO HOW FAST THE CYLINDER IS FILLED.

_______ TRUE _______ FALSE

STATEMENT NO: 80

ANSWER: TRUE

45. WHEN THE SYSTEM IS _________________________, THE HIGH PRESSURE AND
MEDIUM PRESSURE LINES CAN BE TESTED FOR LEAKS BY COATING THE CONNECTIONS
WITH A SOAP LATHER OR LEAK DETECTION SOLUTION.

STATEMENT NO: 54

ANSWER: PRESSURIZED

46. STORING THE RUBBER OR NEOPRENE PARTS IN AREAS WITH FLUORESCENT
LIGHTING WILL HAVE THE SAME EFFECT AS __________________________.

A. ALCHOHOL

B. DIRECT SUNLIGHT

C. CHLORINE BLEACH

D. COMPRESSED AIR

E. OIL

STATEMENT NO: 63

ANSWER: B. DIRECT SUNLIGHT

47. A NEW _____________________ VALVE SHOULD BE INSERTED INTO THE LUNG
DEMAND VALVE ASSEMBLY AT LEAST ONCE EVERY THREE YEARS.

A. EXHALATION

B. INHALATION

C. LUNG DEMAND

D. BY-PASS

E. NONE OF THE ABOVE

STATEMENT NO: 66

ANSWER: E. NONE OF THE ABOVE

48. THE RZ-25 TESTER IS OPERATED BY OVERPRESSURIZING THE BREATHING BAG.

_______ TRUE _______ FALSE

STATEMENT NO: 31

ANSWER: FALSE (BREATHING CIRCUIT)

49. DURING THE WHISTLE DURATION/MANUAL CUT-OFF TEST, THE WARNING WHISTLE
SHOULD SOUND FOR _________________________ SECONDS BEFORE IT
AUTOMATICALLY SHUTS OFF.

A. APPROXIMATELY 30

B. 20 TO 50

C. APPROXIMATELY 20

D. 20 TO 60

E. NONE OF THE ABOVE

STATEMENT NO: 47

ANSWER: E. NONE OF THE ABOVE

50. ALL RUBBER OR NEOPRENE SEALING RINGS SHOULD BE REPLACED AT LEAST
ONCE EVERY THREE YEARS.

_______ TRUE _______ FALSE

STATEMENT NO: 65

ANSWER: FALSE

51. THE OXYGEN DISTRIBUTOR SHOULD BE REPLACED AFTER AT LEAST FIVE YEARS
USAGE.

_______ TRUE _______ FALSE

STATEMENT NO: 69

ANSWER: FALSE (RETURNED TO NMS FOR COMPLETE OVERHAUL)

52. THE EXPIRATION DATE IS STAMPED ON THE _______________________
ATTACHED TO EACH FACTORY PACKED REGENERATIVE CANISTER.

A. STRING SEAL

B. OUTER CASE

C. WHITE LABEL

D. END CAPS

E. NONE OF THE ABOVE

STATEMENT NO: 84

ANSWER: C. WHITE LABEL

53. THE __________________________________ INSIDE THE REGENERATIVE
CANISTER ABSORB THE CARBON DIOXIDE FROM THE AIR THAT IS EXHALED BY THE
WEARER.

STATEMENT NO: 90

ANSWER: SPECIAL CHEMICALS

54. ALTHOUGH THE RZ-25 TESTER MEASURES DOSAGE, IT IS A FLOWMETER.

_______ TRUE _______ FALSE

STATEMENT NO: 30

ANSWER: FALSE (IT IS NOT A FLOWMETER)

55. A HIGH DOSAGE LEAK CAN ALMOST ALWAYS BE ATTRIBUTED TO A LEAK AT THE
VALVE HEAD INSIDE THE LUNG DEMAND.

_______ TRUE _______ FALSE

STATEMENT NO: 41

ANSWER: FALSE (HIGH DOSAGE INDICATION)

56. REPLACE THE O-RING AT THE OXYGEN CYLINDER CONNECTION AT LEAST ONCE
EVERY ____________________________.

A. SIX MONTHS

B. TWO YEARS

C. THREE YEARS

D. FIVE YEARS

E. SIX YEARS

STATEMENT NO: 64

ANSWER: A. SIX MONTHS

57. THE TEMPERATURE IN THE AREAS FOR FILLING AND STORAGE OF OXYGEN
CYLINDERS SHOULD BE MAINTAINED AT APPROXIMATELY ______________________.

A. 60 DEGREES C

B. 70 DEGREES C

C. 140 DEGREES F

D. 140 DEGREES C

E. NONE OF THE ABOVE

STATEMENT NO: 79

ANSWER: E. NONE OF THE ABOVE (70 DEGREES F)

58. WHEN IT IS ASSURED THAT ALL HAND-TIGHT AND WRENCH-TIGHT CONNECTIONS
ARE SECURELY FASTENED, LOW DOSAGE CAN USUALLY BE ATTRIBUTED TO A MISSING
O-RING OR WASHER.

_______ TRUE _______ FALSE

STATEMENT NO: 34

ANSWER: FALSE (DAMAGED)

59. THE LOCKING SCREW ON THE SALIVA TRAP IS TIGHTENED BY HAND.

_______ TRUE _______ FALSE

STATEMENT NO: 37

ANSWER: FALSE (WRENCH)

60. THE _______________________________ ON THE RZ - 25 IS TIGHTENED BY
HAND.

STATEMENT NO: 38

ANSWER: HOSE ADAPTER

61. BREATHING HOSES ARE TIGHTENED BY HAND.

_______ TRUE _______ FALSE

STATEMENT NO: 39

ANSWER: TRUE

62. IF WHILE WEARING APPARATUS, THE WARNING WHISTLE SHOULD SOUND WITH
EACH INHALATION OR WITH EACH ACTIVATION OF MANUAL BY-PASS VALVE, THIS IS
ANOTHER INDICATION OF CLOGGED SEIVES IN THE WARNING WHISTLE RATHER THAN
A DEFECTIVE WHISTLE.

_______ TRUE _______ FALSE

STATEMENT NO: 46

ANSWER: FALSE (CLOGGED SIEVES IN OXYGEN REGULATOR)

63. THE MANUAL CUT-OFF LEVER IS LOCATED ON THE OXYGEN DISTRIBUTOR.

_______ TRUE _______ FALSE

STATEMENT NO: 50

ANSWER: TRUE

64. BEFORE FILLING ANY OXYGEN CYLINDER, CHECK THE
__________________________ AND _______________________________________
STAMPED ON THE CYLINDER.

STATEMENT NO: 76

ANSWER: SERVICE RATING, HYDROSTATIC TEST DATE

65. ANY LEAK IN THE BREATHING CIRCUIT WILL PREVENT THE APPARATUS FROM
OVERPRESSURIZING, THUS INDICATING ____________________________.

A. HIGH DOSAGE

B. POSITIVE PRESSURE LEAK

C. NEGATIVE PRESSURE LEAK

D. LOW DOSAGE

E. NONE OF THE ABOVE

STATEMENT NO: 35

ANSWER: D. LOW DOSAGE

66. THE OXYGEN CYLINDER CONNECTION IS TIGHTENED BY HAND.

_______ TRUE _______ FALSE

STATEMENT NO: 36

ANSWER: TRUE

67. IF DURING THE WHISTLE DURATION/MANUAL CUT-OFF TEST, THE WARNING
WHISTLE SOUNDS LONGER THAN 50 SECONDS, IT IS WASTING VALUABLE OXYGEN.

_______ TRUE _______ FALSE

STATEMENT NO: 49

ANSWER: FALSE (60 SECS.)

68. THE LUNG DEMAND ASSEMBLY MUST BE REPLACED AT LEAST ONCE EVERY SIX
YEARS.

_______ TRUE _______ FALSE

STATEMENT NO: 72

ANSWER: FALSE (SHOULD)

69. THERE ARE TWO TYPES OF CANISTERS YOU CAN USE WITH THE
___________________________________________, REFILLABLE TRAINING
CANISTER AND FACTORY PACKED DISPOSABLE CANISTER.

STATEMENT NO: 91

ANSWER: DRAGER BG-174A APPARATUS

70. THE PLUG ON THE TRAINING CANISTER IS TIGHTENED BY WRENCH.

_______ TRUE _______ FALSE

STATEMENT NO: 33

ANSWER: TRUE

71. A DEFECTIVE DIAPHRAGM WILL CREATE A LOW OPENING PRESSURE.

_______ TRUE _______ FALSE

STATEMENT NO: 2

ANSWER: FALSE (LEAKING)

72. THE PRESSURE RELIEF IS DESIGNED TO OPEN WHEN THE PRESSURE WITHIN THE
_______________________ IS BETWEEN +10 AND +40 MILLIMETERS (+1 MBAR AND
+4 MBAR) OF PRESSURE MEASURED ON THE WATER GAGE.

A. BREATHING APPARATUS

B. BREATHING BAG

C. DEMAND VALVE ASSEMBLY

D. BREATHING CIRCUIT

E. WEARER'S LUNGS

STATEMENT NO: 4

ANSWER: D. BREATHING CIRCUIT

73. ONCE ZERO ADJUSTMENT HAS BEEN MADE ON RZ-25 TEST, PERIODIC
READJUSTMENT IS NOT NECESSARY DURING THE BALANCE OF THE TESTS.

_______ TRUE _______ FALSE

STATEMENT NO: 5

ANSWER: TRUE

74. ALL CONNECTIONS MUST BE HAND TIGHTENED ON APPARATUS AND ZERO
ADJUSTMENTS MADE ON RZ - 25 TESTER PRIOR TO CONNECTING BREATHING HOSES
TO APPARATUS.

_______ TRUE _______ FALSE

STATEMENT NO: 6

ANSWER: FALSE (MUST BE TIGHTENED)

75. THE EXHALATION VALVE SHOULD ALLOW THE BREATHING AIR TO PASS IN ONLY
ONE DIRECTION TOWARD THE APPARATUS.

_______ TRUE _______ FALSE

STATEMENT NO: 7

ANSWER: FALSE (REGENERATIVE CANISTER)

76. DURING THE ________________ TEST, IF VALVE IS OPERATING PROPERLY,
BREATHING BAG SHOULD NOT DEFLATE.

A. INHALATION VALVE

B. EXHALATION VALVE

C. PRESSURE GAGE EQUALIZATION

D. POSITIVE PRESSURE LEAK

E. NEGATIVE PRESSURE LEAK

STATEMENT NO: 8

ANSWER: B. EXHALATION VALVE

77. THE INHALATION VALVE SHOULD ONLY ALLOW THE BREATHING AIR TO PASS IN
ONE DIRECTION TOWARD THE _______________________.

A. FACEPIECE

B. NOVA Z MASK

C. WEARER

D. BREATHING HOSES

E. FACE MASK

STATEMENT NO: 9

ANSWER: E. FACE MASK

78. DURING THE POSITIVE PRESSURE LEAK TEST, THE NEEDLE ON THE RZ - 25
TESTER SHOULD NOT DROP MORE THE 10 MM OR 1 MBAR IN 60 SECONDS.

_______ TRUE _______ FALSE

STATEMENT NO: 11

ANSWER: TRUE

79. THE SCREW RING COVER ON THE LUNG DEMAND VALVE ASSEMBLY AND
CONNECTIONS ON THE BREATHING BAG ARE FINGER TIGHT CONNECTIONS.

_______ TRUE _______ FALSE

STATEMENT NO: 12

ANSWER: FALSE (HAND TIGHT)

80. THE NEGATIVE PRESSURE LEAK TEST IS TO INSURE THAT NO NOXIOUS GASES
ENTER THE BREATHING CIRCUIT DURING OPERATION OF THE APPARATUS.

_______ TRUE _______ FALSE

STATEMENT NO: 13

ANSWER: FALSE (TOXIC)

81. DURING THE NEGATIVE PRESSURE LEAK TEST, THE NEEDLE OF THE RZ - 25
TESTER SHOULD NOT DROP MORE THAN 10 MM H2O OR 1 MBAR IN 60 SECONDS.

_______ TRUE _______ FALSE

STATEMENT NO: 14

ANSWER: FALSE (SHOULD NOT RISE)

82. THE BG-174A IS EQUIPPED WITH A _____________________ WHICH
AUTOMATICALLY PURGES THE NITROGEN RICH AMBIENT AIR, INITIALLY FOUND IN
THE BREATHING CIRCUIT, WITH PURE OXYGEN.

A. OXYGEN REGULATOR

B. PREFLUSHING DEVICE

C. OXYGEN CONTROL GROUP

D. PREFLUSH UNIT

E. NONE OF THE ABOVE

STATEMENT NO: 15

ANSWER: B. PREFLUSHING DEVICE

83. ONCE THE OXYGEN CYLINDER VALVE IS OPENED AND THE UNIT IS CHARGED
WITH OXYGEN, THE PRESSURE GAGE ON THE OXYGEN CYLINDER AND THE CHEST GAGE
ON THE FLEXIBLE LINE MUST EQUALIZE TO WITHIN 20 PERCENT OF ONE ANOTHER.

_______ TRUE _______ FALSE

STATEMENT NO: 16

ANSWER: FALSE (TO WITHIN 10 PERCENT)

84. ALL BG-174A OXYGEN CYLINDERS THAT SHOW _______________________ ON
THE GAGE MUST BE PURGED AND VACUUMED TO REMOVE ANY CONTAMINANT OR
MOISTURE THAT MAY HAVE ENTERED DUE TO LACK OF PRESSURE IN THE CYLINDER.

A. LESS THAN 500 PSI.

B. LESS THAN 300 PSI.

C. LESS THAN 100 PSI

D. ZERO PRESSURE

E. NONE OF THE ABOVE

STATEMENT NO: 17

ANSWER: D. ZERO PRESSURE

85. THE LUNG DEMAND VALVE AUTOMATICALLY GOES INTO ACTION IF LESS THAN
THE ALLOTTED DOSAGE OF 1.4 - 1.7 LPM OF OXYGEN IS CONSUMED BY THE
WEARER.

_______ TRUE _______ FALSE

STATEMENT NO: 18

ANSWER: FALSE (MORE)

86. DURING THE ________________________, THE VALVE SHOULD OPEN BETWEEN
-10mm H2O (-1 MBAR) AND -40mm H2O (-4 MBAR).

A. CONSTANT FLOW DOSAGE TEST

B. PRESSURE GAGE EQUALIZATION TEST

C. PRESSURE RELIEF VALVE TEST

D. POSITIVE PRESSURE LEAK TEST

E. NONE OF THE ABOVE

STATEMENT NO: 19

ANSWER: E. NONE OF THE ABOVE

87. THE _________________________ TEST IS DONE TO INSURE THAT THE
BREATHING BAG HAS THE CORRECT VOLUME, WHICH SHOULD BE AT
LEAST________________.

A. CONSTANT FLOW DOSAGE, 1.4 - 1.7 LPM

B. PRESSURE GAGE EQUALIZATION, 57 PSI

C. BREATHING BAG VOLUME, 5 LITERS

D. EXHALATION VALVE, 5 SECONDS

E. INHALATION VALVE, 5 SECONDS

STATEMENT NO: 20

ANSWER: C. BREATHING BAG VOLUME, 5 LITERS

88. EACH COMPLETE STROKE OF BELLOWS ON THE RZ - 25 TESTER IS EQUAL TO
_______________________.

A. 5 LITERS

B. 6 LITERS

C. 0.5 LITERS

D. 1.0 LITERS

E. 1.5 LITERS

STATEMENT NO: 21

ANSWER: C. 0.5 LITERS

89. DURING THE ___________________ TEST, A FAILURE OF THE ____________
VALVE TO INSTANTLY PROVIDE OXYGEN INTO AND FILL THE BREATHING BAG AT A
RATE OF APPROXIMATELY 50 LPM IN LESS THAN 10 SECONDS IS AN INDICATION OF
AN INTERNAL FAILURE IN THE ________________

A. BY-PASS, BY-PASS, OXYGEN DISTRIBUTOR ASSEMBLY

B. BY-PASS, BY-PASS, OXYGEN REGULATOR

C. BY-PASS, BY-PASS, OXYGEN CONTROL GROUP

D. BY-PASS, DEMAND, WARNING WHISTLE

E. NONE OF THE ABOVE

STATEMENT NO: 22

ANSWER: A. BY-PASS, BY-PASS, OXYGEN DISTRIBUTOR

90. CONSTANT DOSAGE IN THE BG-174A IS PRESET AT APPROXIMATELY 1.45 -
1.55 LITERS/MINUTE.

_______ TRUE _______ FALSE

STATEMENT NO: 23

ANSWER: FALSE (1.5)

91. THREE FACTORS AFFECTING CONSTANT DOSAGE ARE:
______________________________________,
_______________________________________ AND
_____________________________________________________.

STATEMENT NO: 24

ANSWER: DIAM.OF DOS.ORAFICE,CONST.PRESS,ELEV.& ATM.PRESS.

92. THE DOSAGE ORIFICE WITHIN THE OXYGEN DISTRIBUTOR HAS AN OPENING OF
APPROXIMATELY ________________.

STATEMENT NO: 25

ANSWER: 0.17 MM

93. OXYGEN UNDER A CONSTANT PRESSURE OF _______________ IS FORCED
THROUGH THE ORIFICE AT AN APPROXIMATE RATE OF ____________________.

A. 50 PSI, 1.5 LITERS/MINUTE

B. 57 PSI, 1.5 LITERS/MINUTE

C. 75 PSI, 1.7 LITERS/MINUTE

D. 57 PSI, 1.4 LITERS/MINUTE

E. 80 PSI, 1.7 LITERS/MINUTE

STATEMENT NO: 26

ANSWER: B. 57 PSI, 1.5 LITERS/MINUTE

94. THE CONSTANT PRESSURE OF 57 PSI IS MAINTAINED BY THE
_________________________________ IN THE OXYGEN DISTRIBUTOR.

STATEMENT NO: 27

ANSWER: RECIPROCATING ACTION

95. DURING THE CONSTANT DOSAGE TEST THE NEEDLE OF THE RZ-25 TESTER
SHOULD AUTOMATICALLY SETTLE BETWEEN __________________________.

A. -1 AND -4 LPM

B. +1 AND +4 LPM

C. 1.4 AND 1.7 LPM

D. 1.5 AND 1.7 LPM

E. 20 AND 60 SECONDS

STATEMENT NO: 29

ANSWER: C. 1.4 AND 1.7 LPM

96. THE PREFLUSH/DOSAGE LINE CONNECTION IS _______________________.

A. WRENCH TIGHTENED

B. TIGHTENED BY HAND

C. FINGER TIGHTENED

D. MAINTAINED AIRTIGHT BY A SEALING RING

E. NONE OF THE ABOVE

STATEMENT NO: 32

ANSWER: B. TIGHTENED BY HAND

97. THE MANUAL CUT-OFF LEVER IS DESIGNED TO ISOLATE THE
_________________ IN THE EVENT THE GAGE OR THE FLEXIBLE LINE DEVELOPS A
LEAK DURING OPERATION.

STATEMENT NO: 51

ANSWER: CHEST GAGE