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					Induction Course for New
Laboratory Technicians

   4 October 2008

   Sophia CHENG
   Science Education Section, EDB
Job Description for Lab Tech II/III
   To prepare, construct, operate and maintain
    laboratory apparatus and equipment.
   To assist in class demonstration in a laboratory
    or in a demonstration room.
   To assist teachers to supervise the pupils in
    performing experiments.
   To assist teachers in planning and trying out
    experiments.
   To keep stores and inventory in laboratories.
   To carry out annual stocktaking of all stores
    and equipment in laboratories.
   To purchase laboratory apparatus,
    equipment and other items necessary for
    laboratories.
   To prepare annual estimates of consumables,
    stores and additional items for laboratories.
   To conduct routine laboratory tests.
   To be responsible for all the normal safeguards
    in a laboratory.
   To instruct and supervise laboratory attendants
    in the maintenance of the laboratories and
    preparation of rooms.
Science Safety Resource Manual (2003),
British Columbia
What is your role as a LT?

   Manage for good laboratory service
   Manage for safety
   Manage for smooth operation



Support learning and teaching of Science
Procurement and Management of
Laboratory Equipment/Chemicals


 Acquisition        Record Keeping



 Storing /             Write-off /
 Organising            Disposal
Composite Furniture & Equipment Grant (CFEG)

   Cover the costs and maintenance/repair fees
    for F/E items, insurance premium for non-
    standard F&E items
   $14,714 per class for 2008/09
   For Incorporated Management Committee
    (IMC) schools, CFEG has been included in
    Expanded Operating Expenses Block Grant
    (EOEBG).
   EDBCM119/2008
   http://www.edb.gov.hk/oebg-e
Science Subject Grants
   For purchase of consumables
   S1-3 Science, AL Biology and ASL/AL
    Chemistry
   Aided Schools
        Expanded / Operating Expenses Block Grant
        (E/OEBG) (擴大/營辦開支整筆津貼)
   Govt. Schools
       Subject & Curriculum Block Grant
        (科目及課程整筆津貼)
Reference Lists of F/E
   Consider safety and need before purchase
   Specifications of the EDB Reference List of F&E
       www.edb.gov.hk
 Microscale Chemistry Equipment

                       Pipette
                      多用滴管

                                      Well-plate
                                      孔井穴板
Microspatular


    Glass
Combustion tube
                                    Universal
                                 Indicator Chart
Electrolysis of dilute sodium hydroxide




Pins



                        Shampoo
                         Solution

         0.4 M NaOH
Reduction of CuO




 Microburner           5M HCl



                   Galvanized
                    iron coil
Reactions of Chlorine



                        NaCl
 Bleach + HCl




   KI                   KBr
Microscale Organic Reactions
Microscale Organic Reactions
Laboratory Equipment

                       Bunsen Burner
                          Screen




Spectacle Cabinet          Flexicam
Laboratory Equipment

    Hand Protector 隔熱護手墊
Laboratory Equipment

 • Protecting students from chemical spillage
How to reduce glass breakage
and cut accidents?
Laboratory Equipment

   Reduce breakage of
    glassware
       Plasticware (e.g.
        dropper, beaker,
        funnel)
       polypropylene (PP),
        polymethylpentene
        (PMP, TPX))
    Laboratory Equipment
   Thermometers
      Non-mercury filled
      Short vs long (150mm / 300mm)

      Plastic coated / Reinforced bulb

      Digital (-50 - 150oC)
Asbestos
   Asbestos-containing products should not be
    used in schools
   Beware of equipment with heat insulating
    materials e.g. wire gauzes, bench mats, ovens
   Bench mats should be made of glass
    reinforced cement. Wire gauzes should be with
    ceramic centres.
   Add “Asbestos free” requirement when
    purchasing
   Do not dispose of asbestos-containing
    products as common garbage
Procurement of Chemicals
   Before purchase, assess the hazardous nature of
    chemicals, check your inventory, whether it will be used in
    experiments in the near future
   Acquire safer alternatives e.g. Volasil 244 instead of CCl4
   Avoid over-stocking of chemicals
   Keep quantities to a minimum especially for water-reactive
    chemicals e.g. Na, K, CaC2, SiCl4, hazardous chemicals
    e.g. Br2 (ampoule package), conc. acids and alkalis and
    flammable chemicals e.g. P, ether, ethanol, etc
   Clearly labelled and date-stamped the date of arrival
   Keep a clear and updated record of chemical stocks
    (locations)
Safety Information of Chemicals

   International Chemical Safety Cards
       http://www.ilo.org/public/english/protection/safewo
        rk/cis/products/icsc/
   Material Safety Data Sheet (MSDS)
       Developed by the Faculty Laboratory Centre of
        CityU
       http://cd1.edb.hkedcity.net/cd/science/laboratory/c
        ontent_safety.html
Labeling of Chemical
Printing labels for chemicals




                                    職業安全健康局




   http://www.oshc.org.hk/download/download/4/chemical2005.zip
Printing labels for chemicals
Controlled Chemicals
   Prevent diversion of chemicals to illicit (違法)
    manufacture of narcotic drugs or psychotropic
    substances e.g. heroin (海洛因)
   Control of Chemicals Ordinance (Cap. 145)
   List of Controlled Chemicals
       http://www.customs.gov.hk/chi/major_licence_chemicals_c.ht
        ml
   Acetylating Substances (乙酰化物)
       Ethanoyl chloride (乙酰氯), ethanoic anhydride (乙酰酐)
   Potassium Permanganate (高錳酸鉀)
   Storage approval (Form CED 360)
Chemical Weapon Precursors
 List of chemical weapon precursors controlled
under the Import and Export Ordinance (Annex A
of STCC No.16/04)
http://www.stc.tid.gov.hk/english/circular_pub/stc
16_04.html
 Schools wishing to purchase chemicals e.g.
NaF, KF, PCl3 or PCl5 for experiments should first
sign the chemical end-user undertaking.
 Strategic Trade Controls Brance, Trade and
Industry Department (工 業 貿 易 署 )
Enquiry: 2398 5587 (Tel), stc@tid.gov.hk (email)
Do you think school laboratories
           are safe?
Survey on laboratory accidents in secondary
schools (05/06)
   464 schools responded (response rate :
    93.4% )
   Statistics
       296 schools without accident (64%)
       554 cases in 168 schools (36%)
   500 students and 8 staffs injured; most
    injuries were minor cuts or scalds
   Cause of accidents: Carelessness
    (students: 91.7%; teachers: 0.5%; LTs: 1.8%)
  Subjects involved (05/06)
                                                                Others
350                                     309 (56%)
                                                                Bites by animals
300
                                                                Substances catching fire
250
                                                                Cuts
200
                 134 (24%)
                                                                Discomfort arising from
150                                                             inhalation of gases
                             92 (17%)
                                                                Heat burns or scalds
100
       18 (3%)
                                                                Chemicals spillage
 50                                                   1 (~0%)
                                                                Eye accidents
 0
      Phy        Chem   Bio/H Bio         IS        ES/S&T
                                                                Chemicals on skin
    Accident Records

   Keep record of all
    accidents (including
    minor accidents) in
    each lab
   Send detailed
    accident report for
    serious laboratory
    accident to REO
Science Education –
Laboratory Safety and Management
(http://www.edb.gov.hk/cd/sc > References & Resources)
Resources on laboratory safety and management
   Information about approved gas tubing for Bunsen
    Burners
   Handbook on Safety in Science Laboratories (2002)
   Posters on laboratory safety
   Laboratory safety inspection checklist
   Material Safety Data Sheets (MSDS)
   Use of Sealed Radioactive Sources for Teaching
    Purposes in Schools
   Risk assessment form
   List of university centres and facilities supplying rats
    for school use
Handbook on Safety in Science Laboratories
(http://cd1.emb.hkedcity.net/cd/science/laboratory/safety/SHB_2002e.pdf)

     Safety management
     Hazardous chemicals and
      their storage
     Disposal of chemical wastes
     Handling of glassware,
      plants, microorganisms,
      animals, radioactive
      substances, etc.
     First aid in the laboratory
     Laboratory accidents and
      insurance
Handbook on Safety in Science Laboratories


   Additional resources or information in
    appendices:
       Risk assessment form
       Some plants known to contain irritants
       Report form on laboratory accident
       Chemistry experiments requiring particular care
Curriculum reform in science education

Year        Curriculum revised

1998        S1-3 Science

2002        S4-5 Bio, Chem, Phy
            AL Bio
2005        AL Chem, AL Phy

2009        NSS Bio, Chem, Phy
            NSS Integrated Science
            NSS Combined Science
Emphasis on Scientific Investigation

   Inquiry-based experiments and simple
    investigation
   Encourage students to design their own
    experiments
   Develop skills of problem solving,
    collaboration, critical thinking, creativity…
   Scientific investigation as part of curriculum in
    NSS science subjects
Risk Assessment
   An analysis of a practical activity to
    identify hazards and to take precautions to
    minimise the risk
   Procedures:
      Identifying hazards
       (Materials / Procedures / Equipment)
      Deciding what control measures to
       reduce risk to acceptable level
      Finding how to dispose of hazardous
       residues
More roles and duties
   contribute in departmental meetings
   display signs alerting students to take proper
    safety precautions
   familiarise with the curriculum content to facilitate
    the preparation of materials for practical lessons
   familiarise with new trends of curriculum
    development – purchase necessary equipment
   maximise the use of resources and minimise
    wastage of materials by recycling and reuse
   label drawers and cabinets to facilitate easy
    access
   update professional knowledge
Manage a Safe Environment for
   Learning and Working

				
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