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Old 22-09-2023, 18:04   #1
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Freshwater Recommissioning - What Code?

Anyone looking to clean their water has seen a post giving the procedures, containing the following text:

"The following recommendations conform to section 10.8 in the A-1 192 code covering electrical, plumbing, and heating of recreational vehicles"

Being a contractor for over 20 years, the nerd in me would like to know where exactly this "Code" is located.

Does anyone have a source for this?
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Old 22-09-2023, 18:15   #2
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Re: Freshwater Recommissioning - What Code?

Quote:
Originally Posted by Iron E View Post
Anyone looking to clean their water has seen a post giving the procedures, containing the following text:

"The following recommendations conform to section 10.8 in the A-1 192 code covering electrical, plumbing, and heating of recreational vehicles"
How do you "clean the water"?
Or do you mean "clean the water tank"?
Are boats in SoCal considered as "recreational vehicles"?
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Old 22-09-2023, 22:07   #3
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Re: Freshwater Recommissioning - What Code?

Probably covered under the NFPA 1192 standards but I don't plan to buy a copy. I think the A-1 192 was something from the 1990.
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Old 23-09-2023, 01:58   #4
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Re: Freshwater Recommissioning - What Code?

NFPA 1192 is the fire and life safety Standard on Recreational Vehicles
https://www.nfpa.org/codes-and-stand...tail?code=1192
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Old 23-09-2023, 09:14   #5
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Re: Freshwater Recommissioning - What Code?

Quote:
Originally Posted by GordMay View Post
NFPA 1192 is the fire and life safety Standard on Recreational Vehicles
https://www.nfpa.org/codes-and-stand...tail?code=1192
Thanks GM and TinTin, I have NFPA 52 (and quite a few more) and didn't even think of them.

Kind of strange that Freshwater Systems maintenance would be in NFPA. I'll see if I can find it and make some sense.

Thanks again
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Old 23-09-2023, 09:27   #6
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Re: Freshwater Recommissioning - What Code?

Yep.

To ensure complete disinfection of the potable water system, it is recommended that the following procedures be followed on a new
system, one that has not been used for a period of time, or one that could have become contaminated. This procedure is also
recommended before long periods of storage such as over winter.

(1) Prepare a chlorine solution using 1 gal. (3.8 L) of water and 1⁄4 cup (60 ml) household bleach (sodium hypochlorite solution).
With tank empty, pour chlorine solution into the tank. Use 1 gal. (3.8 L) solution for each 15 gal (57 L) of tank capacity. This
procedure will result in a residual chlorine concentration of 50 ppm in the water system.

If a 100 ppm concentration is required,
as discussed in A.7.3.7.5(3), use 1⁄2 cup of household bleach with 1 gal. of water to prepare the chlorine solution. Use 1 gal. of
the solution for each 15 gal. of tank capacity.

(2) Complete filling of tank with potable water. Open each faucet and run the water until a distinct odor of chlorine can be detected
in the water discharged. Do not forget the hot water taps.

(3) Allow the system to stand for at least 4 hours when disinfecting with 50 ppm residual chlorine. If a shorter time period is
desired, a 100 ppm chlorine concentration should be permitted to stand in the system for at least 1 hour.

(4) Drain and flush with potable water.

EDIT:

While it's not specifically defined, I would imagine "Household Bleach" to mean 6% concentrate. They should have defined that since Bleach comes in a variety of strengths.
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Old 23-09-2023, 10:02   #7
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Re: Freshwater Recommissioning - What Code?

Also, important

From Peggy Hall: Before beginning, turn off hot water heater at the breaker; do not turn it on again until the entire recommissioning is complete and all bleach solution has been flushed out of it. Icemakers should be left running to allow cleaning out of the water feed line; however the first two buckets of ice—the bucket generated during recommissioning and the first bucketful afterward--should be discarded…bleach does absolutely nothing to improve the flavor of good Scotch!
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Old 13-05-2024, 04:50   #8
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Re: Freshwater Recommissioning - What Code?

Peggy Hall in her book states to use a 1-gallon solution for every 5 gallons of tank capacity. Solution is 1 gallon of water with 2 ounces (60 ml) of Clorox/Purex (5% sodium hypochlorite).

Is there a typo error in Peggy Hall's book? Her directions will result in a concentration much stronger than 50 ppm.
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Old 13-05-2024, 08:18   #9
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Re: Freshwater Recommissioning - What Code?

I also followed a recommendation I saw somewhere to sail the boat around for a while to make sure the solution gets sloshed around and gets into all the crevices, corners, etc.
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