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What metal is most suitable for a ladder submerged in an underground water tank?
Can I install a hot water recirculation pump if I have a reverse osmosis filter?Conduit Underground - Ways for tunneling under obstructions?Buying a House On Underground Spring. What to do?What to do with metal frame for clothesline?How can I prevent unpleasant smells and organisms in our water tank?Elec hot water tankInstalling water pipe to outbuilding - how to handle insulation/cold so it won't burst/will be usable in winter?Overflow pipe from water tank constantly drippingPEX vs PE coiled pipe for underground useWhat kind of metal is safe for DIY BBQ repair?
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I need a ladder in my underground water tank at home, to enable easy access for cleaning and maintenance operations. The water from the underground tank is used for drinking, apart from other household chores.
What would be the most suitable metal for this submerged ladder in the underground water tank? I don't want any water contamination due to sustained contact between ladder metal and tank water, as the water is used for drinking. TDS of water supply is ~125 mg/liter.
EDIT - I would also want to know any metal treatment (paint, varnish, etc) to prevent water contamination due to sustained contact between ladder metal and tank water.
water metal underground water-tank
asked May 14 at 12:20
Bharat KhatriBharat Khatri
17316
add a comment |
I need a ladder in my underground water tank at home, to enable easy access for cleaning and maintenance operations. The water from the underground tank is used for drinking, apart from other household chores.
What would be the most suitable metal for this submerged ladder in the underground water tank? I don't want any water contamination due to sustained contact between ladder metal and tank water, as the water is used for drinking. TDS of water supply is ~125 mg/liter.
EDIT - I would also want to know any metal treatment (paint, varnish, etc) to prevent water contamination due to sustained contact between ladder metal and tank water.
water metal underground water-tank
asked May 14 at 12:20
Bharat KhatriBharat Khatri
17316
12
Is it possible to instead have the ladder lowered into the cistern, and stored outside the tank when not in use?
– ratchet freak
May 14 at 12:35
8
Leaving the ladder outside the tank is a potential safety issue. If someone falls in while the tank is only half-full it could be deep enough to drown in, while still not having a good escape route.
– user3757614
May 15 at 2:27
6
What is the tank itself made of?
– DJohnM
May 15 at 5:23
1
Not remotely an expert in this sort of thing but--is there any particular reason not to use aluminum?
– Hearth
May 15 at 14:28
add a comment |
I need a ladder in my underground water tank at home, to enable easy access for cleaning and maintenance operations. The water from the underground tank is used for drinking, apart from other household chores.
What would be the most suitable metal for this submerged ladder in the underground water tank? I don't want any water contamination due to sustained contact between ladder metal and tank water, as the water is used for drinking. TDS of water supply is ~125 mg/liter.
EDIT - I would also want to know any metal treatment (paint, varnish, etc) to prevent water contamination due to sustained contact between ladder metal and tank water.
water metal underground water-tank
asked May 14 at 12:20
Bharat KhatriBharat Khatri
17316
I need a ladder in my underground water tank at home, to enable easy access for cleaning and maintenance operations. The water from the underground tank is used for drinking, apart from other household chores.
What would be the most suitable metal for this submerged ladder in the underground water tank? I don't want any water contamination due to sustained contact between ladder metal and tank water, as the water is used for drinking. TDS of water supply is ~125 mg/liter.
EDIT - I would also want to know any metal treatment (paint, varnish, etc) to prevent water contamination due to sustained contact between ladder metal and tank water.
water metal underground water-tank
water metal underground water-tank
asked May 14 at 12:20
Bharat KhatriBharat Khatri
17316
asked May 14 at 12:20
Bharat KhatriBharat Khatri
17316
asked May 14 at 12:20
Bharat KhatriBharat Khatri
17316
asked May 14 at 12:20
Bharat KhatriBharat Khatri
17316
asked May 14 at 12:20
Bharat KhatriBharat Khatri
17316
17316
12
Is it possible to instead have the ladder lowered into the cistern, and stored outside the tank when not in use?
– ratchet freak
May 14 at 12:35
8
Leaving the ladder outside the tank is a potential safety issue. If someone falls in while the tank is only half-full it could be deep enough to drown in, while still not having a good escape route.
– user3757614
May 15 at 2:27
6
What is the tank itself made of?
– DJohnM
May 15 at 5:23
1
Not remotely an expert in this sort of thing but--is there any particular reason not to use aluminum?
– Hearth
May 15 at 14:28
add a comment |
12
Is it possible to instead have the ladder lowered into the cistern, and stored outside the tank when not in use?
– ratchet freak
May 14 at 12:35
8
Leaving the ladder outside the tank is a potential safety issue. If someone falls in while the tank is only half-full it could be deep enough to drown in, while still not having a good escape route.
– user3757614
May 15 at 2:27
6
What is the tank itself made of?
– DJohnM
May 15 at 5:23
1
Not remotely an expert in this sort of thing but--is there any particular reason not to use aluminum?
– Hearth
May 15 at 14:28
12
12
Is it possible to instead have the ladder lowered into the cistern, and stored outside the tank when not in use?
– ratchet freak
May 14 at 12:35
Is it possible to instead have the ladder lowered into the cistern, and stored outside the tank when not in use?
– ratchet freak
May 14 at 12:35
8
8
Leaving the ladder outside the tank is a potential safety issue. If someone falls in while the tank is only half-full it could be deep enough to drown in, while still not having a good escape route.
– user3757614
May 15 at 2:27
Leaving the ladder outside the tank is a potential safety issue. If someone falls in while the tank is only half-full it could be deep enough to drown in, while still not having a good escape route.
– user3757614
May 15 at 2:27
6
6
What is the tank itself made of?
– DJohnM
May 15 at 5:23
What is the tank itself made of?
– DJohnM
May 15 at 5:23
1
1
Not remotely an expert in this sort of thing but--is there any particular reason not to use aluminum?
– Hearth
May 15 at 14:28
Not remotely an expert in this sort of thing but--is there any particular reason not to use aluminum?
– Hearth
May 15 at 14:28
add a comment |
2 Answers
2
active
oldest
votes
Stainless steel is the obvious choice. Which exact grade is probably more dependent on what you can easily find than what the "most perfect for the job" grade might be, but 316 or 316L would be high on the list and are quite commonly available.
Be very careful about ventilating the tank if entering it "for maintenance" - tanks can be deadly. If the water is clean going in and there's no route for contaminants to enter, the need for internal maintenance should be minimal.
edited May 14 at 13:37
manassehkatz
12.6k11844
answered May 14 at 12:38
EcnerwalEcnerwal
58.2k24398
1
I’ve never heard of 316L, it must be a local thing. I use a lot of 304, also very common. Stay away from the 400, 500, and 600 Series. Here’s a link that explains: continentalsteel.com/stainless-steel/grades
– Lee Sam
May 14 at 16:24
8
Not remotely "a local thing" - it's an ASME grade - the low-carbon version: sandmeyersteel.com/images/316-316l-317l-spec-sheet.pdf
– Ecnerwal
May 14 at 16:36
1
I live in a high corrosion area and never heard of that. Learned something already today.
– Lee Sam
May 14 at 17:15
2
What hazards are possible when cleaning the tank?
– akostadinov
May 15 at 13:49
2
Asphyxiation is the usual / major problem. Gases can collect in underground tanks, which are neither breathable nor noticeably objectionable. If you enter a tank without thoroughly ventilating it, you may pass out and die, as may anyone who enters the tank to (attempt to) rescue you.
– Ecnerwal
May 15 at 13:59
|
show 4 more comments
To add a bit to the question from Pavel in the comments of Ecnerwals answer:
Stainless steel structures in swimming pools are known to be prone to SCC. The use of standard austenitic stainless steels like 304 and 316 is forbidden in this application. The best steels to use for this purpose are the high nickel austenitic steels such as the 6% Mo grades. However, in some cases, duplex steels such as 2205 (1.4462) and the superduplex grades can be considered.
Stress Corrosion Cracking (SCC) is a form of corrosion which occurs with a particular combination of factors:
Tensile stress
Corrosive environment
Sufficiently high temperature
Normally 50 deg C but can occur at lower temperatures around 25 deg C in specific environments, notably swimming pools.
Unfortunately, the standard austenitic steels like 304 (1.4301) and 316 (1.4401) are the most susceptible to SCC
source
Sure, swimming pools contain chlorine and usually have a higher temperature and stuff, but better safe than sorry.
Since OP asked for the most suitable steel, I would like to suggest 1.4462 Duplex stainless steel.
It is non-corrosive steel with excellent properties.
Properties:
- particularly high corrosion resistance,
- very good mechanical properties,
- suitable for use at temperatures from -100 °C to 250 °C,
- medium good forgeable, good weldable,
- polishable, magnetizable
Application:
- construction industry
- chemical and petrochemical industry
- food industry
- offshore
- shipbuilding
- machine engineering
edited May 15 at 13:40
Machavity
8,89422043
answered May 15 at 8:46
undefinedundefined
1637
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
Stainless steel is the obvious choice. Which exact grade is probably more dependent on what you can easily find than what the "most perfect for the job" grade might be, but 316 or 316L would be high on the list and are quite commonly available.
Be very careful about ventilating the tank if entering it "for maintenance" - tanks can be deadly. If the water is clean going in and there's no route for contaminants to enter, the need for internal maintenance should be minimal.
edited May 14 at 13:37
manassehkatz
12.6k11844
answered May 14 at 12:38
EcnerwalEcnerwal
58.2k24398
1
I’ve never heard of 316L, it must be a local thing. I use a lot of 304, also very common. Stay away from the 400, 500, and 600 Series. Here’s a link that explains: continentalsteel.com/stainless-steel/grades
– Lee Sam
May 14 at 16:24
8
Not remotely "a local thing" - it's an ASME grade - the low-carbon version: sandmeyersteel.com/images/316-316l-317l-spec-sheet.pdf
– Ecnerwal
May 14 at 16:36
1
I live in a high corrosion area and never heard of that. Learned something already today.
– Lee Sam
May 14 at 17:15
2
What hazards are possible when cleaning the tank?
– akostadinov
May 15 at 13:49
2
Asphyxiation is the usual / major problem. Gases can collect in underground tanks, which are neither breathable nor noticeably objectionable. If you enter a tank without thoroughly ventilating it, you may pass out and die, as may anyone who enters the tank to (attempt to) rescue you.
– Ecnerwal
May 15 at 13:59
|
show 4 more comments
Stainless steel is the obvious choice. Which exact grade is probably more dependent on what you can easily find than what the "most perfect for the job" grade might be, but 316 or 316L would be high on the list and are quite commonly available.
Be very careful about ventilating the tank if entering it "for maintenance" - tanks can be deadly. If the water is clean going in and there's no route for contaminants to enter, the need for internal maintenance should be minimal.
edited May 14 at 13:37
manassehkatz
12.6k11844
answered May 14 at 12:38
EcnerwalEcnerwal
58.2k24398
1
I’ve never heard of 316L, it must be a local thing. I use a lot of 304, also very common. Stay away from the 400, 500, and 600 Series. Here’s a link that explains: continentalsteel.com/stainless-steel/grades
– Lee Sam
May 14 at 16:24
8
Not remotely "a local thing" - it's an ASME grade - the low-carbon version: sandmeyersteel.com/images/316-316l-317l-spec-sheet.pdf
– Ecnerwal
May 14 at 16:36
1
I live in a high corrosion area and never heard of that. Learned something already today.
– Lee Sam
May 14 at 17:15
2
What hazards are possible when cleaning the tank?
– akostadinov
May 15 at 13:49
2
Asphyxiation is the usual / major problem. Gases can collect in underground tanks, which are neither breathable nor noticeably objectionable. If you enter a tank without thoroughly ventilating it, you may pass out and die, as may anyone who enters the tank to (attempt to) rescue you.
– Ecnerwal
May 15 at 13:59
|
show 4 more comments
Stainless steel is the obvious choice. Which exact grade is probably more dependent on what you can easily find than what the "most perfect for the job" grade might be, but 316 or 316L would be high on the list and are quite commonly available.
Be very careful about ventilating the tank if entering it "for maintenance" - tanks can be deadly. If the water is clean going in and there's no route for contaminants to enter, the need for internal maintenance should be minimal.
edited May 14 at 13:37
manassehkatz
12.6k11844
answered May 14 at 12:38
EcnerwalEcnerwal
58.2k24398
Stainless steel is the obvious choice. Which exact grade is probably more dependent on what you can easily find than what the "most perfect for the job" grade might be, but 316 or 316L would be high on the list and are quite commonly available.
Be very careful about ventilating the tank if entering it "for maintenance" - tanks can be deadly. If the water is clean going in and there's no route for contaminants to enter, the need for internal maintenance should be minimal.
edited May 14 at 13:37
manassehkatz
12.6k11844
answered May 14 at 12:38
EcnerwalEcnerwal
58.2k24398
edited May 14 at 13:37
manassehkatz
12.6k11844
edited May 14 at 13:37
manassehkatz
12.6k11844
edited May 14 at 13:37
manassehkatz
12.6k11844
12.6k11844
answered May 14 at 12:38
EcnerwalEcnerwal
58.2k24398
answered May 14 at 12:38
EcnerwalEcnerwal
58.2k24398
answered May 14 at 12:38
EcnerwalEcnerwal
58.2k24398
58.2k24398
1
I’ve never heard of 316L, it must be a local thing. I use a lot of 304, also very common. Stay away from the 400, 500, and 600 Series. Here’s a link that explains: continentalsteel.com/stainless-steel/grades
– Lee Sam
May 14 at 16:24
8
Not remotely "a local thing" - it's an ASME grade - the low-carbon version: sandmeyersteel.com/images/316-316l-317l-spec-sheet.pdf
– Ecnerwal
May 14 at 16:36
1
I live in a high corrosion area and never heard of that. Learned something already today.
– Lee Sam
May 14 at 17:15
2
What hazards are possible when cleaning the tank?
– akostadinov
May 15 at 13:49
2
Asphyxiation is the usual / major problem. Gases can collect in underground tanks, which are neither breathable nor noticeably objectionable. If you enter a tank without thoroughly ventilating it, you may pass out and die, as may anyone who enters the tank to (attempt to) rescue you.
– Ecnerwal
May 15 at 13:59
|
show 4 more comments
1
I’ve never heard of 316L, it must be a local thing. I use a lot of 304, also very common. Stay away from the 400, 500, and 600 Series. Here’s a link that explains: continentalsteel.com/stainless-steel/grades
– Lee Sam
May 14 at 16:24
8
Not remotely "a local thing" - it's an ASME grade - the low-carbon version: sandmeyersteel.com/images/316-316l-317l-spec-sheet.pdf
– Ecnerwal
May 14 at 16:36
1
I live in a high corrosion area and never heard of that. Learned something already today.
– Lee Sam
May 14 at 17:15
2
What hazards are possible when cleaning the tank?
– akostadinov
May 15 at 13:49
2
Asphyxiation is the usual / major problem. Gases can collect in underground tanks, which are neither breathable nor noticeably objectionable. If you enter a tank without thoroughly ventilating it, you may pass out and die, as may anyone who enters the tank to (attempt to) rescue you.
– Ecnerwal
May 15 at 13:59
1
1
I’ve never heard of 316L, it must be a local thing. I use a lot of 304, also very common. Stay away from the 400, 500, and 600 Series. Here’s a link that explains: continentalsteel.com/stainless-steel/grades
– Lee Sam
May 14 at 16:24
I’ve never heard of 316L, it must be a local thing. I use a lot of 304, also very common. Stay away from the 400, 500, and 600 Series. Here’s a link that explains: continentalsteel.com/stainless-steel/grades
– Lee Sam
May 14 at 16:24
8
8
Not remotely "a local thing" - it's an ASME grade - the low-carbon version: sandmeyersteel.com/images/316-316l-317l-spec-sheet.pdf
– Ecnerwal
May 14 at 16:36
Not remotely "a local thing" - it's an ASME grade - the low-carbon version: sandmeyersteel.com/images/316-316l-317l-spec-sheet.pdf
– Ecnerwal
May 14 at 16:36
1
1
I live in a high corrosion area and never heard of that. Learned something already today.
– Lee Sam
May 14 at 17:15
I live in a high corrosion area and never heard of that. Learned something already today.
– Lee Sam
May 14 at 17:15
2
2
What hazards are possible when cleaning the tank?
– akostadinov
May 15 at 13:49
What hazards are possible when cleaning the tank?
– akostadinov
May 15 at 13:49
2
2
Asphyxiation is the usual / major problem. Gases can collect in underground tanks, which are neither breathable nor noticeably objectionable. If you enter a tank without thoroughly ventilating it, you may pass out and die, as may anyone who enters the tank to (attempt to) rescue you.
– Ecnerwal
May 15 at 13:59
Asphyxiation is the usual / major problem. Gases can collect in underground tanks, which are neither breathable nor noticeably objectionable. If you enter a tank without thoroughly ventilating it, you may pass out and die, as may anyone who enters the tank to (attempt to) rescue you.
– Ecnerwal
May 15 at 13:59
|
show 4 more comments
To add a bit to the question from Pavel in the comments of Ecnerwals answer:
Stainless steel structures in swimming pools are known to be prone to SCC. The use of standard austenitic stainless steels like 304 and 316 is forbidden in this application. The best steels to use for this purpose are the high nickel austenitic steels such as the 6% Mo grades. However, in some cases, duplex steels such as 2205 (1.4462) and the superduplex grades can be considered.
Stress Corrosion Cracking (SCC) is a form of corrosion which occurs with a particular combination of factors:
Tensile stress
Corrosive environment
Sufficiently high temperature
Normally 50 deg C but can occur at lower temperatures around 25 deg C in specific environments, notably swimming pools.
Unfortunately, the standard austenitic steels like 304 (1.4301) and 316 (1.4401) are the most susceptible to SCC
source
Sure, swimming pools contain chlorine and usually have a higher temperature and stuff, but better safe than sorry.
Since OP asked for the most suitable steel, I would like to suggest 1.4462 Duplex stainless steel.
It is non-corrosive steel with excellent properties.
Properties:
- particularly high corrosion resistance,
- very good mechanical properties,
- suitable for use at temperatures from -100 °C to 250 °C,
- medium good forgeable, good weldable,
- polishable, magnetizable
Application:
- construction industry
- chemical and petrochemical industry
- food industry
- offshore
- shipbuilding
- machine engineering
edited May 15 at 13:40
Machavity
8,89422043
answered May 15 at 8:46
undefinedundefined
1637
add a comment |
To add a bit to the question from Pavel in the comments of Ecnerwals answer:
Stainless steel structures in swimming pools are known to be prone to SCC. The use of standard austenitic stainless steels like 304 and 316 is forbidden in this application. The best steels to use for this purpose are the high nickel austenitic steels such as the 6% Mo grades. However, in some cases, duplex steels such as 2205 (1.4462) and the superduplex grades can be considered.
Stress Corrosion Cracking (SCC) is a form of corrosion which occurs with a particular combination of factors:
Tensile stress
Corrosive environment
Sufficiently high temperature
Normally 50 deg C but can occur at lower temperatures around 25 deg C in specific environments, notably swimming pools.
Unfortunately, the standard austenitic steels like 304 (1.4301) and 316 (1.4401) are the most susceptible to SCC
source
Sure, swimming pools contain chlorine and usually have a higher temperature and stuff, but better safe than sorry.
Since OP asked for the most suitable steel, I would like to suggest 1.4462 Duplex stainless steel.
It is non-corrosive steel with excellent properties.
Properties:
- particularly high corrosion resistance,
- very good mechanical properties,
- suitable for use at temperatures from -100 °C to 250 °C,
- medium good forgeable, good weldable,
- polishable, magnetizable
Application:
- construction industry
- chemical and petrochemical industry
- food industry
- offshore
- shipbuilding
- machine engineering
edited May 15 at 13:40
Machavity
8,89422043
answered May 15 at 8:46
undefinedundefined
1637
add a comment |
To add a bit to the question from Pavel in the comments of Ecnerwals answer:
Stainless steel structures in swimming pools are known to be prone to SCC. The use of standard austenitic stainless steels like 304 and 316 is forbidden in this application. The best steels to use for this purpose are the high nickel austenitic steels such as the 6% Mo grades. However, in some cases, duplex steels such as 2205 (1.4462) and the superduplex grades can be considered.
Stress Corrosion Cracking (SCC) is a form of corrosion which occurs with a particular combination of factors:
Tensile stress
Corrosive environment
Sufficiently high temperature
Normally 50 deg C but can occur at lower temperatures around 25 deg C in specific environments, notably swimming pools.
Unfortunately, the standard austenitic steels like 304 (1.4301) and 316 (1.4401) are the most susceptible to SCC
source
Sure, swimming pools contain chlorine and usually have a higher temperature and stuff, but better safe than sorry.
Since OP asked for the most suitable steel, I would like to suggest 1.4462 Duplex stainless steel.
It is non-corrosive steel with excellent properties.
Properties:
- particularly high corrosion resistance,
- very good mechanical properties,
- suitable for use at temperatures from -100 °C to 250 °C,
- medium good forgeable, good weldable,
- polishable, magnetizable
Application:
- construction industry
- chemical and petrochemical industry
- food industry
- offshore
- shipbuilding
- machine engineering
edited May 15 at 13:40
Machavity
8,89422043
answered May 15 at 8:46
undefinedundefined
1637
To add a bit to the question from Pavel in the comments of Ecnerwals answer:
Stainless steel structures in swimming pools are known to be prone to SCC. The use of standard austenitic stainless steels like 304 and 316 is forbidden in this application. The best steels to use for this purpose are the high nickel austenitic steels such as the 6% Mo grades. However, in some cases, duplex steels such as 2205 (1.4462) and the superduplex grades can be considered.
Stress Corrosion Cracking (SCC) is a form of corrosion which occurs with a particular combination of factors:
Tensile stress
Corrosive environment
Sufficiently high temperature
Normally 50 deg C but can occur at lower temperatures around 25 deg C in specific environments, notably swimming pools.
Unfortunately, the standard austenitic steels like 304 (1.4301) and 316 (1.4401) are the most susceptible to SCC
source
Sure, swimming pools contain chlorine and usually have a higher temperature and stuff, but better safe than sorry.
Since OP asked for the most suitable steel, I would like to suggest 1.4462 Duplex stainless steel.
It is non-corrosive steel with excellent properties.
Properties:
- particularly high corrosion resistance,
- very good mechanical properties,
- suitable for use at temperatures from -100 °C to 250 °C,
- medium good forgeable, good weldable,
- polishable, magnetizable
Application:
- construction industry
- chemical and petrochemical industry
- food industry
- offshore
- shipbuilding
- machine engineering
edited May 15 at 13:40
Machavity
8,89422043
answered May 15 at 8:46
undefinedundefined
1637
edited May 15 at 13:40
Machavity
8,89422043
edited May 15 at 13:40
Machavity
8,89422043
edited May 15 at 13:40
Machavity
8,89422043
8,89422043
answered May 15 at 8:46
undefinedundefined
1637
answered May 15 at 8:46
undefinedundefined
1637
answered May 15 at 8:46
undefinedundefined
1637
1637
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12
Is it possible to instead have the ladder lowered into the cistern, and stored outside the tank when not in use?
– ratchet freak
May 14 at 12:35
8
Leaving the ladder outside the tank is a potential safety issue. If someone falls in while the tank is only half-full it could be deep enough to drown in, while still not having a good escape route.
– user3757614
May 15 at 2:27
6
What is the tank itself made of?
– DJohnM
May 15 at 5:23
1
Not remotely an expert in this sort of thing but--is there any particular reason not to use aluminum?
– Hearth
May 15 at 14:28