sop for Preparation of Sodium hydroxide Solution
To lay down a procedure for the Preparation of Sodium Hydroxide Solution.
This Standard Operating Procedure is applicable for Preparation of Sodium Hydroxide Solution to be followed at formulation plants
3.1 Engineering Officer / Executive shall be responsible for the execution of this procedure.
3.2 Engineering Manager shall be responsible for the implementation of this SOP.
3.3 Head QA/designee shall be responsible for the compliance of this SOP.
4.0 Abbreviations and Definitions
SOP : Standard Operating Procedure
No : Number
QA : Quality assurance
Qty : Quantity
TH : Total Hardness
Ml : millilitre
Kg : kilograms
NaCl : Sodium chloride
ER : Engineering
5.1 Take 500gm of sodium hydroxide flakes and add 05 litter of soft water in bucket.
5.2 dissolve the sodium hydroxide flakes in the water and allow to cool to room temperature.
5.3 Take 45 litter of fresh soft water in pH correction tank.
5.4 Transfer in to pH correction dosing tank through 200 mesh nylon cloth.
5.5 Mix the solution in pH correction dosing tank with help of S.S ladle.
5.6 Adjust the dosing rate such that pH 8.0-8.3 is maintained before RO system.
5.7 Prepare and add fresh solution in the dosing tank daily.
5.8 Avoid low level situation in dosing tank.
6.1 Use proper hand gloves duly disinfected with IPA or chlorinated water while preparing the solution.
6.2 Use safety goggle and mask while preparing the solution.
6.3 Clean the bucket SS ladle and nylon cloth after solution preparation activity.
7.0 Forms and Records
7.1 Record of Caustic Soda – Annexure – 1.
8.1 Master copy – Documentation Cell (Quality Assurance)
8.2 Controlled copies – Engineering department