Help with underpinning Knowledge questions for NVQ LV3 2356

[brucelee]

Hi All,

Please could someone help me with some of the knowledge questions i am struggling with

I have been given knowledge questions to complete for
301,303,304,305,306,307,

I have answered as many as i can but i am struggling with a few
some of these i have answers for but not to sure if they are correct

I would be grateful if any help in answering these questions they are from different units above i struggle in interprepting some of the questions
the NVQ is harder than the 2391 lol

unit 301
KE4
4. What are the regulatory requirements for using approved access equipment including following supplier’s instructions?

8. How do you safely use, take care of and store hazardous substances and what are the safe handling and disposal methods for optical fibres and other materials?
my answer
Any materials which are hazardous to health will come under COSHH regulations and controlled waste regulations and as a result suitable systems would need to be in place for the use , storage of hazardous substances and disposal methods for optical fibres and other materials
appropriate risk assesment will need to be completed to identify the risks who might be harmed and how etc as well as adequeate training for people who are to handle , use or store hazardous materials
1 Eliminate the use of a harmful product or substance and use a safer one.
2 Use a safer form of the product, eg paste rather than powder.
3 Change the process to emit less of the substance.
4 Enclose the process so that the product does not escape.
5 Extract emissions of the substance near the source.
6 Have as few workers in harm’s way as possible.
7 Provide personal protective equipment (PPE) such as gloves, coveralls and a
respirator. PPE must fit the wearer
when using optical fibres
keep all food and beverages out fo the working area to avoid accidental ingestion
always wear suitable safety glasses to protect from shards or splinters
keep track of all fibre and cable scraps and dispose of them properly
never look directly into the ends of fibre optic cables especialy with a microscope unless certain its safe to do so
do not touch eyes while working with fibre optic systems until washed hands thouroughly
only work in wel ventillated areas when finished dispose of all scraps properly in a suitable contianer labelled correctly for safe disposal
thoroughly clean work area when work completed

unit 303
K8
8. What are the safety implications and economic consequences of supplying inaccurate or incomplete information to the customer?
my answer
Someone could be seriously injured if I gave inaccurate or incomplete information. This could occur through inaccurate test results, ending in a fault possibly being present and not identified, or equipment being used inappropriately or incorrectly because of bad functional and operational information i had provided

unit 304
k6.1,k6.2,k6.3
6. What are the agreed work location health and safety procedures?

This was discussed at the site induction, including the procedures.
this is all i have for this not much

unit 305
k4
4. How would you calculate sizes and types of wiring systems, wiring enclosures and equipment and what is the importance of making calculations for this purpose?

This is completed at the design stage of the job to ensure all equipment is fit for purpose and complies with the regulations
using available drawings, specifications, environment, utilisation, building structure calculations and measurements of routes and distances
to ensure the correct type, size of cable , enclosures and equipment is fit for the purpose intended and so to provide a economical design

306
k10
unit 305, 306 and 307
What part of the IEE wiring regulations as specified in the latest British Standard for Electrical Installations are relevant to types and uses of wiring systems, wiring enclosures and equipment?

answer

part 5 Selection and erection of wiring systems is relevent to the types and uses of wiring systems, wiring enclosures and equipment Chapter 51,52,53,54,55 and 56 as according to the IET wiring regulations BS7671 2008 amendment no 1 2011 the requirements for electrical installations

unit 306 and 307
Where would you find out about the principles of electrical theory, which allow for the safe installation of electrical wiring systems, wiring enclosures and equipment?

BS 7671 IET wiring regulations 2008 amendment no 1 2011 the requirments for electrical installations



any help with these greatly appreciated as between this and lv3 2330 my head is chocker and struggling to find answers and to understand what they are asking

thanks appreciate any help anyone can give

 

[SirKit Breaker]

I will give you a heads up on what i as an Assessor would be looking for with NVQ Knowledge questions.

I am looking for understanding of the question with the answers that provided. If i ask the same question to 15 people i will get 15 different answers, most of them will be acceptable. There is no definitive answer to any of the questions, you need to answer and explain in your own words, and with just enough information to tell me you understand what is being asked.

unit 301 No 8, good answer.
unit 303 no 8, good answer again, but consider that any downtime could cost time, money and loss of reputation if an accident were to occur, so the economic implications could potentially close the business down, and amongst other things put a lot of people out of work..
unit 301 Q4, you must be trained in the use of the equipment, the equipment must be tagged as safe to use with a scaftag or similar.
306 K10, part 5 selection and erection of equipment.

I will look over the rest when i have more time, but it looks like you need to have a look over the regs book to help you out.

Cheers...........Howard

 

[brucelee]

Cheers Howard

appreciate you taking the time to explain

i hadnt thought of the extra cost implications and downtime etc so cheers
its jsut trying to understand what they are asking and giving a apprpriate answer

I had a feelong the last question related to part 5 so will have a look through

thanks very much karl

 

[Silly Sausage]

brucelee,

re Hazardous substances:
maybe add that hazchems come with a COSHH safety data sheet and that you should follow any instructions therein.

 

[brucelee]

thanks archy and sirkit breaker

working my wa through them so thanks again for the help

 

[brucelee]

Hi would this be a suitable answer for the following

unit 304
k6.1,k6.2,k6.3
6. What are the agreed work location health and safety procedures?

This was discussed at the site induction, including the procedures for risk assessments , reporting hazards, fire, accident prevention and reporting, safety signs, barriers ,PPE

 

[brucelee]

I have sent my NVQ knowledge questions to be checked and a few have come back from some of the individual units as they need more detail and also because i was linking them to a specific job i had been doing
any advice and help appreciated
greatly this first one is from UNIT 305
I hadnt finished answerring so it was sent back
2. What are the common types, their advantages and limitations of wiring systems, wiring enclosures and equipment?

answer so far
The common types of wiring systems, wiring enclosures and equipment and there advantages & disadvantages are
Containment systems advantages and disadvantages
Adavantages of (PVC) Plastic conduit
is cheaper to buy and install than steel conduit
is much lighter to handle than steel and therefore helps to provide a higher production rate throughout the day
Is a rewirable system and easy to make additions
easy to cap off
is avialble in 2 colours balck or white
can be used indorrs, outdoors, laid in the ground installed on the surface or flush within the building fabric
will not corrode
Light in weight
Easy to handle
Easy to saw, cut and clean
Simple to bend
Does not require painting
Rigid and flexible
minimum condensation due to low thermal conductivity in wallls
Quick to install
Its impervious to acids, alkalis, oil, aggressive soils ,fungi and bacteria
PVC conduit has the following disadvantages
expensive to use in comparison with twin and earth cable
Has to be handled twice once when installing and agin when wiring
requires an additional cpc to be installed
requires bending springs to prevent collapse
frequently bends ' springs out' and needs to be done again
care must be taken when applying glue to the joints to avoid forming a barrier across the inside of the conduit
If insufficient adhesive is used the joints may not be waterproof
PVC expands around five times as much as steel and this expanson must be allowed for
Advantages of steel conduit
Robust and will withstand most impact
Provides a rewireable system
additions to the sytem are relatively easy to make
provides an excellent CPC
the disadvanteges are
expensive to intall as it has to be handles twice first installaton, and the the wiring
Expensive to purchase compared to Twin and Earth cable
difficult to install and requires specialist tools and equipment, such as pipe vices, bending machines, and stocks and dies, as well as electric drills and drill bits for fixings
joints need to be mechanically and electrically sound eg tight
scratches, joints and exposed threads need painting to avoid rust
requires skill and training
sharp edges which must be removed to avoid damage to the cable as well as cuts to hands and fingers are to be avoided
Trunking PVC and metallic
Provides a rewirable system and additions can be made at a later date
can be installed before the final position of equipmnet is known
can be used to contain many circuits and there fore cost effective
dado trunking can have sockets and accessories fitted in the lid
metallic trunking provides an excellent CPC
the disadvantages are
the removal of a individual circuit can be difficult, as the cables often intertwine with each other
Earth continuity has to be maintained across each joint for metal trunking
A seperate CPC has to be installed for each circuit when contained withing pastic trunking
sharp edges on metal trunking can damage cables and fingers
segregation for multi-compartment trunking must be maintained at joints , crossovers and bends
If proprierty bends and sets are not available then these will need to be maunufactured on site
they can be over filled with cables
special tools may be requires for cutting the trunking when working with trunking larger than 200x 200mm
Advantages of cable tray
easy and quick to assemble
cables are laid on to the tray , as opossed to having to be drawn through
additional cables can be installed easily at a later date
the tray allows maximum air flow around the cables
they can be located above false ceilings
the slots in the tray make it easy to dress and fix in place with cable ties
accessories such as crossovers , tees, bends and offsets are available
Disadvantages of cable tray
As with all metal objects, sharp edges can cut and damage cabes and fingers
larger sizes of tray and cable ladder require more than one person to handle them
planning the route and making fixings can take longer
they can be overloaded with cables
require bonding ( earth)
If accessories such as crossovers and tees, are not available these will have to be manufactured on site , requiring extra skill and training.
trays over 300mm will require more than jsut a hacksaw to cut them, tools such as large jigsaws or flat trunking saws will be needed
advantages and disadvantages of wiring systems
advantages of MICC cable
Robustness- the cable does not require any additional mecahnical protection
Fire resitance properties - copper can withstand 1000 degrees C
and magnesium oxide 2800 degrees C
as such often used for emergency systems such as fire alarms and emergency lighting, or in areas with high anbient temperature, does not emit smoke or toxic gas
Higher current - carrying capacity is acheived than pvc-insulated cbales, resulting in the ability to use smaller csa
the relative space between the conductors and sheath is maintained when the cable is flattened, not affecting the cables insulation values
the cable is no ageing
totally waterproof
low smoke and fume (LSF) sheathing is available
the copper sheath can be used for earth continuity saving having to install a seperate protective conductor
the disadvantages are
Cost - this is very high compared to FP200 and other wiring systems
Handling- removing bends for surface work is necessarry but difficult
weight- a 100m coil of 2.5mmSq is difficult to handle anything above this weight may require a two- handed operation
when installing bare MICC, precautions must be taken to prevent the sheath from being scrathced or damaged as this is the cpc
micc cable with pvc sheath cannot be installed when temp falls below 0degrees C as the sheath may crack or break
pVC sheath is required outside to prevent oxidisation and the cable turning green
PVC/SWA/PVC cable advantages are
Robust construction, so ideal for use in heavy industry as the wire armour provides excellent mechanical protection
very flexible and easy to handle
It can be laid on tray, clipped direct or laid diectly in the ground
the disadavntages are
cost when compared wit other wiring systems
pvc sheath meaning it cannot be installed when temp falls below 0 degrees C as the sheath may crack or become brittle
the larger size cables lose there flexibility and can be more difficult to manoeuvre
the larger cables will require cable rollers, cable jacks and a drum bar
the larger cables are purchase on cable drums which can be more than 2 m or more in diametre 1 metre of 4 core 300mmSq wheighs appox 50Kg
single core PVC insulated sheathed and unsheathed
advantages are
relativley cheap compared to other wiring systems
flexible and easy to handle
readily drawn in conduit or laid in trunking
disadvantages are
it requires additional protection
when used in metal enclosure , live conductors associated with a circuit must pass through the same openings to prevent EDDY CURRENTS being induced
the smaler solid , stranded conductors should not be used were vibration can be experienced such as terminations to electric motors
it cannot be installed were temp drops below )degrees C as the isulation may break or crack
PVC - Insulated and sheathed flat wiring system eg T/E
advantages are
flexibility
it is easy to handle and feed through holes in joists
it can be used on the surface or in flush work
it can be laid on cable tray above false ceilings
relatively cheap compared to other wiring systems
Disadvantages are
the PVC sheath offers little mechanical protection
capping or oval conduit needs to be used were there is a risk of damge to cable
it cannot be insalled when temp drops below 0degrees C
FP200 and Fp200 gold
advantages
easy to handle
designed for use with conventaional terminations
no special tools required
age resistance insulation
bends easily without the use of bending tools
disadvantages
can be damaged if bending radii are not observed
cables lacks mechanical strength
easily damaged if not correctly terminated


does this look Ok and now i just need to list various equipment etc or am i over answering which i have a tendency to do lol
cheers for any help and advice much appreciated I need to go through the 4 units he has sent back and complete them before half way through july

thanks

 

[Johnuk]

to above question can you not just put refer to bs 7671 reg book?

 

[brucelee]

no mate basically you have to list all the advantages and disadvantages etc for each

I only wish it was as easy to put that

 

[Johnuk]

wow your assessor annoying then lol, my assessor was ok on my answers he just said answer the question about one of your job right up

 

[brucelee]

I did that and he told me the questions are not specific to the jobs your doing etc

I hate this NVQ mate its worse than any other qual i have done be glad when it is done for good once i done these then upto about 82% and will jsut need to finish with me site diaries

 

[Johnuk]

but then again he messed me around, he could i hold me 7 months before i handed in my nvq 3 that i could not use on of my write ups,
so it added another 9 months to find a job to do my last write up

so he cost me my dream job lol

 

[brucelee]

yeah mate no what your saying


can anyone give me any pointers please on the following questions and answers I will also include what my assessor says about each question

this is related to unit 301
4. What are the regulatory requirements for using approved access equipment including following supplier’s instructions?

you must be trained in the use of the equipment, the equipment must be tagged as safe to use with a scaftag or similar. follow manufacturer instructions on how to use the equipment safely , check the equipment is suitable and safe to use, no damage



Questions 4: What are the regulatory requirements for using approved access equipment including following supplier’s instructions?
I have this in one of the documents i have but for the life of me cant find i have read it but will have to dig deep in all me notes and things

6. What are your legal responsibilities for health and safety appropriate to site working?
Answer needs more With reference to: HASAWA, EAWR, BS7671, CDM regulations and the Building Regulations.


It is the responsibility of all persons to ensure that H&S practices are adhered to, for their benefit and of others. It is an offence to allow a breach of these regulations

would it be along the lines of
It is the responsibility of all persons on site to adhere to H&S practices for safe site working to protect themselves and others when working on site so as to adhere to HASAWA 1974
employers have a duty of carefor the health and safety of employees and must ensure that
. Provide PPE
. Safe place of work
. Adequate welfare facilities
.Provide training , information and supervision etc etc

as it says YOUR legal responsibilities
should i jsut include thngs that a employees responsiblity under HASAWA , EWAR, Building regs etc etc


9. How do you assess the suitability of the cabling closures, pathways and equipment to the work environment?

We should always check the suitability of the items suggested by the architects. It is sometimes difficult to plan ahead from an office the correct equipment we will require for the job

Question 9: How do you assess the suitability of the cabling closures, pathways and equipment to the work environment?forgive my ignorance but what are cabling closures , pathways how would you ensure that they are suitable and how would you install the items etc?

would it be things like site visits drwaings charts and tables, compare to design secifications, checking manufacurers intructions, has applicabble british standard or equivalent is adequate for the working environment

and for installing would it be by following manufacturers instrucions for installation and using approved fixings and installing as per specification and drawings

 

[brucelee]

Hi please could someone point me in the right direction with this
Unit 307 Knowledge questions for the NVQ 2356 lv3
My head is chocker with C&G terminology and trying to interpret what they asking

Q4. What are the procedures for the connection of single- and multi-phase circuits

Q10. What are the organisational procedures for completion of necessary documentation

is this referring to BS7671, and giving relevent certificate or report as well as user and manufacturers instructions as well as any diagrams and charts needed for the safe operation and maintainance of electrical systems and equipment

eg
every installation shall, during erection and on completion before being put into service be inspected and tested to verify , so far as reasonably practicable , that the requirments have been met



I jsut have a few left now to complete any help greatly appreciated as my deadline is fast approaching for them
thanks

 

[Jakegood]

I am also stuck on the question how do you asses the suitability for cable enclosures, pathways and equipment to the work environment

Also,

What ar

 

[Jakegood]

What are the requirements of the installation specification