Dear Seniors,
QUESTION IS FROM MY SAFETY OFFICER IS :
What parameter should be consider for Dyke wall construction as well as is there standard guideline for Dyke wall of
1. other than Petrolium materials ( acid, alkali , toxic etc..)
2. Petrolium materials
Regards,
Abhay
From India, Mumbai
49QUESTION IS FROM MY SAFETY OFFICER IS :
What parameter should be consider for Dyke wall construction as well as is there standard guideline for Dyke wall of
1. other than Petrolium materials ( acid, alkali , toxic etc..)
2. Petrolium materials
Regards,
Abhay
From India, Mumbai
Dear Abhay
Just go through the below link:
CR4 - Thread: Dyke Wall Dimension for Storage of Chemical
Hope this will help you somehow...
From India
Just go through the below link:
CR4 - Thread: Dyke Wall Dimension for Storage of Chemical
Hope this will help you somehow...
From India
dIPILJI , Thanx
I used that earlier but not got enough information,
Regards,
Abhay
From India, Mumbai
I used that earlier but not got enough information,
Regards,
Abhay
From India, Mumbai
Dipil asked me to help you on this chemical question
The two questions around dyke operations are simple
The first are you keeping out contaminents or trying to contain chemicals from spilling or leaching out
The nest is it inside risks or out side storage risks
After that the risk factors are simple to build
The first thing is the type of chemical you are protecting
Second is risk when building like heavy traffic in the area
the spillage to leakage to damange to the dyke ( like the fire rating on a steal door how long before the chemical breaks down the dyke or if equipment is used around it shock impact to dyke strength if someone hits it
The standard is 36 inches off the ground and a minimum of re-enforced steel inlayed cement about6- 8 inches thick
Plus there is the matter of contaiment of chemical and inner contaments and they too must be collect inside the dyke area
So if you anser these guestions the rest of the question is easy
With a ladder stair way point of entry except this now become confined space because of the ergess point
For petro chemicals a 30 degree built up berm is layed on the outside area as an additional protective barrier with grounding rods put out side the wall area to the tanks to prevent electrical discharge
The inner flower is re-enforced also with a six inch base and the whole area has a built in protective liner pending the chemical to prevent letching of the product
From Canada, Calgary
The two questions around dyke operations are simple
The first are you keeping out contaminents or trying to contain chemicals from spilling or leaching out
The nest is it inside risks or out side storage risks
After that the risk factors are simple to build
The first thing is the type of chemical you are protecting
Second is risk when building like heavy traffic in the area
the spillage to leakage to damange to the dyke ( like the fire rating on a steal door how long before the chemical breaks down the dyke or if equipment is used around it shock impact to dyke strength if someone hits it
The standard is 36 inches off the ground and a minimum of re-enforced steel inlayed cement about6- 8 inches thick
Plus there is the matter of contaiment of chemical and inner contaments and they too must be collect inside the dyke area
So if you anser these guestions the rest of the question is easy
With a ladder stair way point of entry except this now become confined space because of the ergess point
For petro chemicals a 30 degree built up berm is layed on the outside area as an additional protective barrier with grounding rods put out side the wall area to the tanks to prevent electrical discharge
The inner flower is re-enforced also with a six inch base and the whole area has a built in protective liner pending the chemical to prevent letching of the product
From Canada, Calgary
Dear Terry
Thanks a lot for your input and clearing the doubts of Mr. Abhay...
Keep on sharing and reqquested to keep on participate into the forum discussions and share your expertise with us...
Once again thanks a lot...
@ Abhay: Nice to know that you get solution through our beautiful forum...
From India
Thanks a lot for your input and clearing the doubts of Mr. Abhay...
Keep on sharing and reqquested to keep on participate into the forum discussions and share your expertise with us...
Once again thanks a lot...
@ Abhay: Nice to know that you get solution through our beautiful forum...
From India
Dear Sir,
Regarding the Dyke wall is whether Petrolium materials or chemicals the size of holding of the Dyke wall is 1.25 times the total capacity of the tanks of storage.
The flooring type will vary according the type of materials we use.
regards,
T.S.SRINIVASAN
From India, Pondicherry
Regarding the Dyke wall is whether Petrolium materials or chemicals the size of holding of the Dyke wall is 1.25 times the total capacity of the tanks of storage.
The flooring type will vary according the type of materials we use.
regards,
T.S.SRINIVASAN
From India, Pondicherry
hi abhay,
pls. find some input from my side on the same,
1. Secondary containment for a single container (tank) should be 110% of the primary container
2. Secondary containment for multiple containers should be 150% of the largest container's volume OR 10% of the aggregate volumes of all containers, which is greater.
3. All secondary containment systems open to rainfall must be able to hold 4.5 inches of rainfall in addition to the required secondary containment volume.
4. All secondary containment systems open to fire sprinkler discharge must be able to hold the discharge from all sprinkler heads over the secondary containment system for 20 minutes in addition to the required secondary containment volume.
5. The dyke for the storage tanks should have a mininmum height of 30 cm.
6. The dyke and dyked area is lined with a material that is compatible (chemically resistant) with the material being stored.
7. Uncontrolled drainage from a secondary containment system is not allowed. Accumulated rainwater or sprinkler flow water may only be released from a secondary containment system after it has been determined to be uncontaminated. The drainage system must be kept closed or pumps turned off unless the drainage process is monitored.
8. Materials that in combination may cause a fire or explosion, or the production of a flammable, toxic, or poisonous gas, or the deterioration of a primary or secondary container shall be separated in both the primary and secondary containment so as to avoid intermixing.
9. If the tank is a vertical tank & if it has the leak at the middle, the dyke should be constructed in such a way that - considering the travelling distance of the material due to its head.
this is what I have now. these are universal practices.
apart from this, I don't have the answer for the question kidly specify where it is mentioned (ACT/Rule etc.) if you want the rules, I'm helpless & I will try to look into this, but not immediately, as I'm unable to concentrate on this.
y'day I missed ur thread & so once again a late sharing of the points. kindly bear with me.
dear tgpenney, thank u for the inputs.
dear dipil, I need to have a look on your link.
dear srinivas, could u pls. tell from where u got this 1.25. this point is new for me.
hope abhay can get something out from this explanation.
From India, Delhi
pls. find some input from my side on the same,
1. Secondary containment for a single container (tank) should be 110% of the primary container
2. Secondary containment for multiple containers should be 150% of the largest container's volume OR 10% of the aggregate volumes of all containers, which is greater.
3. All secondary containment systems open to rainfall must be able to hold 4.5 inches of rainfall in addition to the required secondary containment volume.
4. All secondary containment systems open to fire sprinkler discharge must be able to hold the discharge from all sprinkler heads over the secondary containment system for 20 minutes in addition to the required secondary containment volume.
5. The dyke for the storage tanks should have a mininmum height of 30 cm.
6. The dyke and dyked area is lined with a material that is compatible (chemically resistant) with the material being stored.
7. Uncontrolled drainage from a secondary containment system is not allowed. Accumulated rainwater or sprinkler flow water may only be released from a secondary containment system after it has been determined to be uncontaminated. The drainage system must be kept closed or pumps turned off unless the drainage process is monitored.
8. Materials that in combination may cause a fire or explosion, or the production of a flammable, toxic, or poisonous gas, or the deterioration of a primary or secondary container shall be separated in both the primary and secondary containment so as to avoid intermixing.
9. If the tank is a vertical tank & if it has the leak at the middle, the dyke should be constructed in such a way that - considering the travelling distance of the material due to its head.
this is what I have now. these are universal practices.
apart from this, I don't have the answer for the question kidly specify where it is mentioned (ACT/Rule etc.) if you want the rules, I'm helpless & I will try to look into this, but not immediately, as I'm unable to concentrate on this.
y'day I missed ur thread & so once again a late sharing of the points. kindly bear with me.
dear tgpenney, thank u for the inputs.
dear dipil, I need to have a look on your link.
dear srinivas, could u pls. tell from where u got this 1.25. this point is new for me.
hope abhay can get something out from this explanation.
From India, Delhi
Mr SRINIVASAN
Is absolutely right the 1.25 holding cap this allows for the chemical being held plus contamentation factor of water
Plus the other part of the formula is can the other chemicals in the holding area be mixed are they compatable if mixed together or will they react with water if they leak and it has rained the same can be said for the acid based products plus some chemicals need a secondary containment wall or area
And always review and redo all emergency response plans and fire control plans to allow for quick and effective control
The US Chemical Safety Board is a good source for this type of data plus they also not making sure all exterior piping is checked and re-risk assessment is done including tank breather valves and hatch lids they have a excellant video on this in there library of material
Alberta and California have about the best data on chemicals and berm or dyke operations if you need examples for construction purposes plus Im sure your own country has its own chemical - dangerous goods - hazmat department with local or provincial guidelines
Plus most insurance companies have there set of guidelines inplace because of insurance reviews
From Canada, Calgary
Is absolutely right the 1.25 holding cap this allows for the chemical being held plus contamentation factor of water
Plus the other part of the formula is can the other chemicals in the holding area be mixed are they compatable if mixed together or will they react with water if they leak and it has rained the same can be said for the acid based products plus some chemicals need a secondary containment wall or area
And always review and redo all emergency response plans and fire control plans to allow for quick and effective control
The US Chemical Safety Board is a good source for this type of data plus they also not making sure all exterior piping is checked and re-risk assessment is done including tank breather valves and hatch lids they have a excellant video on this in there library of material
Alberta and California have about the best data on chemicals and berm or dyke operations if you need examples for construction purposes plus Im sure your own country has its own chemical - dangerous goods - hazmat department with local or provincial guidelines
Plus most insurance companies have there set of guidelines inplace because of insurance reviews
From Canada, Calgary
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