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Environmental swabbing / positive hits / cleaning of drains

dairy brc sanitation quality QA

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#1 noahchris97

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Posted 07 May 2015 - 05:02 AM

Morning All,

                   I would like some feed back on cleaning and swabbing of drains. What is the appropriate way to swab a drain, or a procedure for swabbing drains? I heard some just do the drain cover, some remove drain cover and swab the bowl and some even go down into the drain. Just looking for a solid proper way on swabbing drains.

                  We have a bit a drain problem with a couple of positive hits ( listeria) and a couple of trouble drains with reoccurring hits. The drain cleaning procedure is very general- collect debris, remove lid, clean out drain bowl, pre-rinse, apply cleaning solution ( HC-10-Ecolab) with dedicated brush, scrub down,  rinse with water then apply a quat base sanitizer ( Boost -3200-3201-ecolab) by pouring from a 5 gal. bucket. Is there something different we should be doing???

                  Any advice, directions will be grateful..... :helpplease:


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#2 Tony-C

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Posted 07 May 2015 - 05:56 AM

Hi noahchris97,

 

If you are having problems then you want to find the source so a program to swab all areas of the drains in question. It pays to have a diagram in number swab points for reference.

 

For investigation purposes you should swab before and after cleaning as this will tell you how effective your cleaning is.

 

A sample cleaning procedure here.

 

Attached File  Floor and Drains Cleaning Procedure Sample.pdf   469.59KB   230 downloads

 

I would say that spraying a disinfectant would give you more effective disinfection than pouring a solution down the drain. If it doesn't make your floors too slippy I would not carry out the final rinse and leave the disinfectant in contact.

 

Regards,

 

Tony


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#3 PS1

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Posted 07 May 2015 - 06:06 AM

Completely agree with Tony-C.  Are the drains free flowing? Also inspect the drains, are there cracks or areas that are difficult to clean? What material is the drain made of, stainless steel, plastic?? If your drains are compatible, you could try a shock sanitiser like peroxyacetic acid.


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#4 noahchris97

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Posted 07 May 2015 - 07:34 AM

Completely agree with Tony-C.  Are the drains free flowing? Also inspect the drains, are there cracks or areas that are difficult to clean? What material is the drain made of, stainless steel, plastic?? If your drains are compatible, you could try a shock sanitiser like peroxyacetic acid.

PS1- Drains are free flowing also the drains are made up all differently. Some are cast iron, some plastic, some stainless steel, molded concrete. The building is old and has been added on to.


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#5 gfdoucette07

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Posted 07 May 2015 - 01:27 PM

Are the reoccuring drains near eachother and/or on the same central trunk? In a former plant we had 2 in the same room causing us trouble, we foamed cleaned the entire room (ecolab product, dont remember what) but paying special attention to the wall/floor junctions, undersides of tank & equipment, and the legs of equipment.  After our deep clean we inspected these same ares for cracks or anywhere that would harbor water and patched them. While we did swab there ares too we found no root cause but it couldnt have hurt.

 

Also yes switching up both your regular soap and sanitizer for a week or so once every couple of months is a good idea.  If all else fails talk to your Ecolab rep and ask for recommendations, thats what you're paying them for ;)

 

Best of luck these were/are my least favorite!

G


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#6 Charles.C

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Posted 07 May 2015 - 03:20 PM

This is slightly OT in that I have no Listeria-specific verification data. it would be an add-on to the customised treatments already discussed.

 

Based on my experience in wet production facilities with raw material which at times undoubtedly has substantial micro.flora of all kinds, one feature which relates to  overall background micro. levels from the floor upwards is the use of in-plant chorination of the water supply.

 

I appreciate there are potential negative comments / local/customer restrictions but having had the opportunity to observe and measure I can only say that the micro. difference between usage levels of <0.1ppm (eg typical water supply) and 0.5 ppm free chlorine can be significant.

 

IMO it is the continuous nature of the application and, in the present case, probably the exit route also which accentuates this benefit.


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Kind Regards,

 

Charles.C


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#7 Tony-C

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Posted 08 May 2015 - 03:44 AM

This is slightly OT in that I have no Listeria-specific verification data. it would be an add-on to the customised treatments already discussed.

 

Based on my experience in wet production facilities with raw material which at times undoubtedly has substantial micro.flora of all kinds, one feature which relates to  overall background micro. levels from the floor upwards is the use of in-plant chorination of the water supply.

 

I appreciate there are potential negative comments / local/customer restrictions but having had the opportunity to observe and measure I can only say that the micro. difference between usage levels of <0.1ppm (eg typical water supply) and 0.5 ppm free chlorine can be significant.

 

IMO it is the continuous nature of the application and, in the present case, probably the exit route also which accentuates this benefit.

 

Yes that is a fair point :thumbup:

 

Regards,

 

Tony


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#8 trubertq

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Posted 08 May 2015 - 02:25 PM

I swab the bowl of the drain and if I detect I try to find the source. Also, contact time is important in sanitising... a thing which can be overlooked by production who are always in a hurry to get going, but slow to put their hands up when the Listeria appears ....... Also having slightly chlorinated water in the plant is a big help with listeria. 


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#9 trubertq

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Posted 08 May 2015 - 02:26 PM

By the way....I'm back after a horrible month which culminated in a Grade A BRC with 4 non conformances...


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#10 Charles.C

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Posted 11 June 2016 - 03:58 AM

Hi all,

 

This parallel thread is also of some interest -

 

http://www.ifsqn.com...mentals-drains/


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Kind Regards,

 

Charles.C






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