Method of statement for chilled water treatment

hamadalx

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CHILLED WATER TREATMENT
Chilled water treatment
The objective of the water treatment pogram for the chilled water system are: To minimize corrosion ,Desposition and Microbiological activities along with the plant integrity and operational efficiency.
As the closed system protection will primarily be required against corrosion .Secondary consideration will be given to deposit control and microbiological activity.
A well balanced microbiological control program should be adopted to control Bio growth. the frequency of Biocide dosage will be determined by the water treatment provider according to their experience as well as the program choice.

Chemical in use
Drew clean c506- Cleaner
CIL- passivator
Drew gard 162- Corrosion Inhibitor
Biosperse 250-Biocide Treatment

Chemical Flushing,Flushing, Cleaning& Treatment procedures
The procedure consists of following phases
Flushing phase-System pre-commission Cleaning phase applicable with Drew clean C506-Passivation phase applicable with CIL-Maintenace treatment ,Final phase applicable with both following Treatment: Drew gard 162 as corrosion inhibitor &Biosperse 250 as Biocide Treatment
These phases should be conscentiveAny interruption in the procedure must be avoided to prevent re-work

أن شاء الله المشاركة القادمة سوف يتم شرح كل خطوة من خطوات تنفيذ أعمال (Flushing& Chemical Treatment)
بالتفصيل ولا تنسوا الدعاء
 

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pora

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ننتظر بحرارة
 

hamadalx

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Fulshing phase
System must be flushed with water to remove debris,which may entered during construction
System must be flushed twice using fresh potable quality water
On emptying the system all drain points and dead legs should be open to remove debris
make sure that all heat exchangers must be isolated during chemical cleaning and flushing


Pre-Commission Cleaning phase
System must be pre-Cleaned to remove surface dust, debris and miscellaneous particles which may have entered during construction, this phase also prepares the metal surface to receive pssivation.

Make sure all vent& drain valves are operational
Temporairly flexible hoses must be connected to the lowest drain points, particulary to the nearest manhole.
For the pump of the system employ minimum 0.5 of the operating pumps for this stage . And alternate between these pumps every 2-4 hours
Initialy fill the system with fresh water and circulate water by operating existing system circulating pump for 30minutes
Check all vents at all levels to release the trapped air
At the end of this period system should be partially drained from the lowest drain points.
Check and clean the strainers
Half fill the system with fresh water then prepare to introduce the chemical cleaning program which consists of Drew clean C506
Inject Drew Clean c 506 program to the sytem under super vision of the water treatment service engineer
Pre-Cleaning should be carried out over a period of 24-48 hours depending on the systems& water conditions
All strainers should be checked & cleaned during this stage every 2-4 hours
Once it is established that the chemical is completely mixed after being circulated for 24-48 hours . The system shall be completely drained from the lowest drain points.
Refill the system with fresh water and recirculate for a minimum period of 2-4 hours and then drain the whole water
Continue the flushing procedure with fresh water only until tests indicate that the water is of an acceptable quality
The system should be drained and re-filled for passivation

أتمنى من الله أن أكون قد وفقت فى نقل هذا الجزء وعلى وعد فى الجزء الأخير
Passivation stage & Maintenance Treatment program(final phase) >>>>ولا تنسوا الدعاء
تحياتى لإخوانى فى الملتقى والمهندس صبرى سعيد
 

دكتور صبرى سعيد

مشرف وإستشاري الهندسة الميكانيكية
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thanks for this brief data , waiting for details
وفقكم الله
وياريت تصور كل خطوة عمل من زوايا مختلفة تنفع بها الجميع و
دائما موفق
 

hamadalx

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إن شاء الله يابشمهندس أكيد فى المشاركة القادمة بإذن الله وشكرا لمرورك
 

hamadalx

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Passivation Stage
Passivation is necessary to inhibt any active/flash corrosion & to lay down a protective film of inhibtor prior to maintenance treatment

The chilled water circuit should be passivated by using CIL passivation chemical program which is suitable for this stage
Passivation program must be monitored well by the water treatment service engineer till completion
This stage may take from 1-3 days depending on, monitroing program effeciencies & project environment
No complete drainages of the system after passivation stage is completed
Corodex final treatment program consists of DREW GARD 162 &Biosperse 250
Should be applied at normal dosages during this phase.The dose will depend on the systems conditions, Volume & water conditions.

4.
Maintenance Treatment Program (Final phase

Chilled water system shall be dosed with DrewGard 162 as corrosion inhibtor
Biocide program also shall be started with Biosperse 250 program, Initially shock dosed
Dosages must be monitored by the Water Treatment Service Engineer
Final Water Quality after Treatment Progam

وبكدة أكون خلصت وسلامى للجميع
 

hamadalx

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إن شاء الله حرفع الصور لخطوات عمل Flushing and Chemical Dosing
المشاركة القادمة إن شاء الله وأسف على التأخير
 

hamadalx

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شكرا لك لمرورك ............
 

ali_salem79

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جزاك الله خيرا يا هندسة وجعله الله في ميزان حسناتك
 
التعديل الأخير:

دكتور صبرى سعيد

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اظهر و بان لكم الأمان يا مهندس حمادة أنت و م / سيد حلاوة
طال شوقنا لعطاءاتكم المتميزة
 
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