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#1 sniadanie

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Posted 27 November 2017 - 03:43 PM

hi

 

can anyone advise what should be the water limits/targets and retest  when  testing for TVC at 22C and 37C 

Testing various  point on monthly basis 

 

thanks 

 



#2 FurFarmandFork

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Posted 28 November 2017 - 12:46 AM

This thread may have the answers you're looking for: http://www.ifsqn.com...ood-production/


Austin Bouck
Owner/Consultant at Fur, Farm, and Fork.
Consulting for companies needing effective, lean food safety systems and solutions.

Subscribe to the blog at furfarmandfork.com for food safety research, insights, and analysis.

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#3 Charles.C

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Posted 28 November 2017 - 06:59 AM

APC Data quoted in link in post 2 above (post 10) inaccurate if intended to be EC reference..(Possibly changed in UK ?)

 

Another UK intended thread here -

 

http://www.ifsqn.com...ective-actions/

(see data post 6)


Kind Regards,

 

Charles.C


#4 Tad Rubiec-Masalski

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Posted 28 November 2017 - 07:06 AM

Following Meat Industry Guide by Food Standards Agency:
 
Interpretation of results
Aerobic colony count (ACC) – the results of ACC tests can be used to assess the water quality
around the plant.
Guideline figures for acceptable ACC values are:
 ACC at 22 oC after 72h – up to 100 per ml
 ACC at 37 oC after 48h – up to 20 per ml
Regular samples from the same points on the system can indicate a developing contamination
problem. Any increase in counts above these guideline figures should be classified as a low level
positive.
Coliform bacteria (total coliforms) – expected levels are less than 1 per 100ml. Presence
should be considered as a low level positive and must be re-sampled – see ‘Follow up actions –
Low level positives’ in this section. If coliform bacteria are found at levels above 3 per 100 ml of
water, in two consecutive samples, or in more than 5% of samples taken within a year, this may
indicate contamination in the water distribution system, and urgent action must be taken – see
‘Follow up action - High level positives’ in this section.
E.coli – if E.coli is detected in water, this is evidence of contamination by animal or human faeces.
This is a serious food safety risk and urgent action must be taken – see ‘Follow up actions – High
level positives’ below.
Enterococci and Clostridium perfringens – are also an indication of faecal contamination and
urgent action must be taken – see ‘Follow up actions – High level positives’ in this section.
Chlorine – British Standards 12671: 2000 Chlorine dioxide – the combined concentration of
chlorine dioxide, chlorite and chlorate should not exceed 0.5mg litre as chlorine dioxide in the
water entering supply – see the ‘Introduction’ section in this chapter.
IV. Follow up actions
Follow up actions – Low level positives
Re-sample and test for all faecal indicators. If a further low level positive result is obtained, but
there is no evidence of faecal contamination, investigate the source of the problem.
Follow up actions – High level positives
Do not use the water outlet or tank from which the sample was taken (and associated outlets if
Meat Industry Guide
Page 17 | Chapter 3 – Water supply August 2015
necessary) until the contamination has been investigated and eliminated and satisfactory
microbiological results have been obtained from further samples taken at the point of entry, the
outlet from which the contaminated sample was taken and any other associated outlets.
Take the appropriate corrective action.
V. Corrective action
Corrective action – Water supply entering premises
If the water supply entering the premises becomes contaminated, it is the water supplier’s or local
authority’s responsibility to restore potable water quality. Follow their directions concerning water
use and product safety.
Corrective action – Contamination within premises
If the water supply becomes contaminated after entering the premises or non-potable water comes
into contact with food, take urgent corrective action to ensure food safety.
Corrective action may include:
 isolating appropriate water outlets/tanks until satisfactory microbiological test results are
obtained (see ‘Follow up actions’ in this section)
 stopping production where no potable supply can be provided
 dealing with any product that has been contaminated, including removing it from the market if
necessary
 establishing the underlying cause and what needs to be done to prevent similar contamination
incidents in the future, such as the installation of either a water filtration and chlorination
system or a water filter and ultra-violet sterilisation system
 reviewing sampling and testing procedures
 improving staff instructions and training


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#5 Charles.C

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Posted 28 November 2017 - 07:17 AM

It may depend on the application, eg -

 

Attached File  UK drinking water standards 2017.pdf   99.44KB   34 downloads

 

and -

 

http://www.legislati...4/contents/made

 

Note that some of these values are modified from both the EU data / those quoted in post 3 above. Some more strict, some, I  think, less so.


Kind Regards,

 

Charles.C


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#6 sniadanie

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Posted 28 November 2017 - 11:56 AM

It may depend on the application, eg -

 

attachicon.gifUK drinking water standards 2017.pdf

 

and -

 

http://www.legislati...4/contents/made

 

Note that some of these values are modified from both the EU data / those quoted in post 3 above. Some more strict, some, I  think, less so.

thank you very much 






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