Fibre Optic safety

Question 1

What are the 4 main safety aspects?

Answer 1

Chemicals
Light sources - Lasers/LED
Glass/Sharps
High Voltages

Question 2

Name 3 of the chemicals Used and describe what they are used for?

Answer 2

Isopropyl Alchohol (IPA) - Used for cleaning the bare Fibres.
Methylated Spirits - Removes surplus grease from loose tubes.
Paint stripper - When primary coating has become brittle.
Resins and superglues - for termination of a fibre with connector.

Question 3

When working with chemicals what are the 4 main risks areas?

Answer 3

Absorption
Ingestion
Fire/explotion
Drowsiness

Question 4

What regiulation apply when working with chemicals?

Answer 4

COSSH Regulations 2002

Question 5

What should you read when working with chemicals?

Answer 5

Safety Data Sheet

Question 6

Where should food and drink be stored?

Answer 6

Safe area

Question 7

Whast should be the last thing you do after working with Fibre?

Answer 7

Wash your hands

Question 8

What should you always wear when working with Fibre?

Answer 8

PPE - Gloves

    - Goggles/face mask
    - Protective coveralls

Question 9

When working with Fibre optic infrastructure there are 3 light sources?

Answer 9

LED - Light Emetting Diode
VCSEL - Vertical Cavity Surface Emitting Laser
LASER - Light Amplification by Stimulated Emision of Radiation.

Question 10

What range of light can the human eye see and what range is uded for Fibre?

Answer 10

390nm - 750nm Human eye

850nm 1550nm Fibre

Question 11

What does LED stand for what mode is it used for and what is its range?

Answer 11

Light Emitting diode
Multimode
790nm - 1300nm

Question 12

What does VCSEL stand for what mode is it used for and what is its range?

Answer 12

Vertical Cavity Surface Emitting Laser
Multimode
790nm - 1625nm

Question 13

What does LASER stand for what mode is it used for and what is its range?

Answer 13

Light Amplification by the Stimulated Emission of Radiation
Singlemode
1310nm - 1550nm

Question 14

Lasers emit light of a single freq called _____ light.

Answer 14

Coherent

Question 15

Name the 7 classes of laser and power?

Answer 15

Class 1       0 - 0.0004mW
Class 1M    0 - 0.0004mW
Class 2      0 - 1mW
Class 2M    0 - 1mW
Class 3R    1 - 5mW
Class 3B    5 - 500mW
Class 4       500mW+

Question 16

Laser clasification are categorised by what BS EN and military refrence?

Answer 16

BS EN 60825-1:2014

JSP390 - Military laser safety

Question 17

How would you know the calss of laser you are working with?

Answer 17

A sticker most likely on the back of the device will contain this information.

Question 18

What are the safety precations when working with Fibre?

Answer 18

Always have dust caps over the unused ports and connectors.
Disable transmitters before working on it.
Chewck power meter that no optical signal is present.
Display Warning signs.
Team must be briefed on the Danger.
Be aware of reflective surfaces (Jewellery and chrome fittings.

Question 19

What refers to the health and safety risk to workers due to adverse effects caused by exsposure to Artificial optical radiation?

Answer 19

Control of artificail radiation at work regulation 2010

Question 20

Define artificial optical radiation?

Answer 20

Electromagnetic radiation in the wavelength range between 11nm and 1mm wich is emitted by non natural sources

Question 21

What is OPtical fibre made from?

Answer 21

Silica glass

Question 22

What precations are you to take when working with optical fibre?

Answer 22

Do not pick up by hand (use tape, not tweezers)
Always wear safety glasses
Do not consume food and drink in your work area

Question 23

What must be contained in all work areas for bare fibres

Answer 23

CIN-BIN

Question 24

What joins fibre filaments?

Answer 24

Fusion Splicing equipment

Question 25

What should you not do with fusion splicing equipment?

Answer 25

Do not use in exsplosive enviroment
Do not attempt to overide any safety mechanisms
Make sure equip is physically safe electrically safe and has been PAT tested