Nice 1st post, if I didn't know better I would say it is trolling.
I'm happy to amend and update it if you tell me what is wrong with the sample procedure.
I am not a troll. I am a training consultant specializing in Quality Assurance and sanitation. I basically write SOP's for a living.
I do not want to offend but I do want to point a few things out. This SOP is over 5 years old so I am assuming it has been working for you.
The first thing that caused alarm is that using a hose in drains is always a bad idea. It would have to be VERY low pressure to not create any back splash.
The next thing is that the area around the drains should be rinsed before they are taken apart. This ensures that the stuff around the drains does not go into a clean drain possibly recontaminating the clean drain. For my procedures I have the area around the drains cleaned before and after we clean the drains. Basically brushing a the floor around the drain with cleaner, cleaning the drain, rinsing with water and then sanitize. This of course isnt possible in all locations.
Another big thing your procedure does not specify is if the brushes and squeegees used are drain only. Having multiple colors for drain equipment does help distinguish the locations that are being cleaned BUT anything that goes into a drain should not be used in any other location in the plant. Also are all of those items pictured used to clean the drains? This can cause confusion for someone trying to write the SOP for drains. The less equipment you use to clean the drains the smaller the chances of miss handling and cross contaminating.
With that in mind any sanitizing solution used to clean drain cleaning equipment should be disposed of immediately after use.
Lastly, is the PPE used chemical resistant and is it drain specific as well?