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0859/L RAD TECH 123/L > Prelim | Procesing Room Design > Flashcards

Prelim | Procesing Room Design Flashcards

1
Q

Films are 2-8 times more sensitive when exposed to white light illumination and ionizing radiation

A

Principle of Latensification

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2
Q

Principle of Latensification

Films are (1) times more sensitive when exposed to (2) and (3)

A
  1. 2-8
  2. white light illumination
  3. ionizing radiation
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3
Q

What image do films contain?

A

Latent image (invisible)

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4
Q

Main function of the dark room

A

to prevent/ protect film from exposure to white light illumination and ionzing radiation during handling and processing

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5
Q

Location of dark rooms

A
  1. centrally located
  2. in proximity / near to exposure room
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6
Q

Size of dark rooms (general)

A

15ft * 9.5 ft or greater (min. of 10sq ft.) and can accomodate 200 radiographs/ day

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7
Q

Size of dark rooms (ceiling height)

A

2.7 - 3.3 m

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8
Q

Sections of the dark room

A

Wet and Dry section

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9
Q

Example of dark room’s wet section

A
  • Manual/ Automatic processor
  • Drying rack
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10
Q

Distance of the wet and dry sections

A

4ft away

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11
Q

What should be considered in a dark room’s construction?

A
  • Wall
  • Floor
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12
Q

Criteria for concrete wall construction

A

Greater than 6 inches [to absorb ionizing radiation] (3 3/4” in if added with lead)

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13
Q

Criteria for hollow block wall construction

A

filled with cement

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14
Q

Criteria for wood wall construction

A

with 1.5mm Pb (1/16 in)

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15
Q

Criteria for the color of walls

A

light/ bright tones (to reflect color of the safelight)

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16
Q

All criteria for the construction of wall

A
  • Concrete should be greater than 6in (3 3/4” if added w/ lead)
  • Hollow bolocks are filled with cement
  • Wood is with 1.5 mm Pb (1/16 mm)
  • Color: light/ bright tones
  • Light places
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17
Q

All criteria for the construction of floor

A
  • Should be non-slippery and free from any stored objects
  • Space should be sufficient for at least 1-2 persons to work inside the dark room
  • Chemical resistant
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18
Q

Example of chemical rsistant materials for the construction of floors

A

Tiles/ concrete ( easy to clean)

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19
Q

Types of entrances

A
  • Single door dark room
  • Light-lock door/ double door
  • Layrinth/ maze
  • Revolving door
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20
Q

Simplest type of entrance

A

Single door darkroom

21
Q

2-way exit/ entry way

A

Light-lock door/ double door

22
Q

zigzag entryway

A

Labyrinth/ maze

23
Q

fastest access type of door

A

revolving door

24
Q

one entry and exit way type of entrance

A

Revolving door

25
Q

Maintains proper temperature and humidity

A

Ventilation

26
Q

Types of ventilation

A
  • Exhaust fan
  • AC
  • Electric fan
27
Q

Storage room temperature

A

10-20° C / 50-70° F

28
Q

Storage room and darkroom humidity

A

40-60%

29
Q

Measures temperature

A

Thermometer

30
Q

Measures humidity

A

Psychrometer

31
Q

Types of lighting

A
  • Whitelight
  • Safelight
32
Q

Functions of the whitelight

A
  • inspection and maintenance of cassette
  • cleaning work surfaces
  • servicing of equipment
  • changing of solution
33
Q

Provides enough light to illuminate the darktoom while ensuring that the film remains unexposed

A

Safelight

34
Q

Compositions of safelight

A
  • incandescent (?) lamps with a color filter
35
Q

What is the safelight’s filter made out of?

A

Glass tinted with different colors

36
Q

Has the capacity to emit all typess of light

A

LED Lamps

37
Q

Safelight wattage

A

15 W

38
Q

Distance of safelight

A

No closer than 1.5m (5ft) from the work space

39
Q

Physics of light

A

Frequency of light is inversely proportional to its wavelength

40
Q

Wavelength of the color red

A

Long ƛ at 700nm (low f)

41
Q

Wavelength of the color violet

A

Short ƛ at 400 nm (high f)

42
Q

Safelight filters

A
  • Kodak Wratten Series 6B Filter
  • Kodak GBX Filter
43
Q

Color of the Kodak WS 6B filter and what color it emit

A
  • Amber filter (reddish yellow)
  • Emits orange-brown light
44
Q

Color of the Kodak GBX filter and what color it emit

A
  • Red filter
  • Emits dark red light
45
Q

Transmits light that has a ƛ longer than 550 nm

A

Kodak WS 6B Filter

46
Q

Transmits light that has a ƛ above 660 nm

A

Kodak GBX Filter

47
Q

What type of safelight filter moves toward red? and what moves toward violet?

A

Towards red: Kodak GBX filter
Towards violet: Kodak WS 6B FIlter

48
Q

Compatability of the filter color of the safelight to the color sensitivity of the film

A

Spectral matching

49
Q

Spectral matching refers to the compatability of the (1) of the safelight to the (2) of the film

A
  1. filter color
  2. color sensitivity

0859/L RAD TECH 123/L (16 decks)

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