SOP Title: Sanitization of PW Storage and Distribution System
- Objective:
To lay down a procedure for the Sanitization of PW Storage and Distribution System.
- Scope:
This procedure is applicable for the Sanitization of Purified Water Storage Tank and Distribution loop line at site.
- Responsibility:
3.1 Engineering Department: To prepare and review the SOP. To follow the procedure laid down for the PW Storage and Distribution System as per this SOP.
3.2 Quality Assurance Department: To review and approve the SOP and Annexes. To ensure
compliance of the procedure.
- Accountability:
Head, Engineering Department / Head, Quality Assurance Department.
- Procedure:
- Definitions:
5.1.1 Engineering Associate: Executive or Operator of Engineering Department trained to perform duties as per this SOP.
5.2. Operational Procedure:
| Safety Precautions/Instructions: | ||
| 5.2.1 | Wear appropriate Personal Protective Equipment while sanitization of PW storage and distribution system. | |
| 5.2.2 | Check whether all the instruments in the line are under calibrated state and functioning properly. | |
| 5.2.3 | Ensure that the water level in the PW storage tank is at least 2/3 of the capacity. | |
| 5.2.4 | Check the operation of spray ball by opening the lid of PW storage tank. | |
| 5.2.5 | Inform the User Departments before sanitization of the system and close all the user points of PW during sanitization procedure. | |
| Hot water sanitization of PW Storage and Distribution System: | ||
| 5.2.6 | Thermal approaches to system sanitization include periodic circulating of hot water at 80°C -85°C for 45 minutes. | |
| 5.2.7 | Start the boiler and open the steam valve to the PW water tank. | |
| 5.2.8 | Check the pressure of steam on the pressure gauge (should be maintained below 1.5 kg/cm2). | |
| 5.2.9 | Open the steam valve of the steam jacketed purified water tank. | |
| 5.2.10 | Wait till the temperature of the PW storage tank reaches to 80°C -85°C. | |
| 5.2.11 | Open the re-circulatory pump of the water system and circulate the hot water continuously for 45 minutes. | |
| 5.2.12 | After 45 minutes drain the hot water through all the users points for 10 minutes (i.e. till all the hot water gets drain out completely). | |
| 5.2.13 | Close all the user points of the loop and close the steam valve from the boiler. | |
| 5.2.14 | After completion of sanitization, intimate Quality Control Department to collect the purified water sample by sending “Water Sample Intimation Slip” as per Annexure to Quality Control Department. | |
| 5.2.15 | Water Sample Intimation Slip containing two copies (One original and one Carbon copy. | |
| 5.2.16 | After water sample analysis, Quality Control Department sends the carbon copy of “Water Sample Intimation Slip” with result to Engineering Department and original copy retains with Quality Control Department. | |
| 5.2.17 | Record the sanitization details in the prescribed format as mentioned in Annexure. | |
| 5.2.18 | Start the water system after receiving water analysis report satisfactory. | |
| Frequency | ||
| 5.2.19 | Perform the Sanitization Procedure for Water System after every fortnightly. | |
- Abbreviation:
| Abbreviation | Expansion |
| QAD | Quality Assurance Department |
| EGD | Engineering Department |
| °C | Degree Celsius |
| PW | Purified Water |
| NMT | Not More Than |
| w.r.t. | With Respect To |
*Note – Ready to use SOP available in “DOWNLOAD” Section.