P 90
JERP Execution-Fire water System and Safety features
Network drain arrangement and valves
As JERP underground fire water network was about 300Kms in overall length, we realized the need for drain valve provisions at strategic locations in overall OSBL network. That became essential since the network is always filled with water under 10.5 kg/cm2g pressure, that too stagnant water is prone to develop bacteria , bad odor and lead to corrosion of header. There came the controversy!
The end user-JMD Fire department marked about 250 number of points in the overall network drawing and gave it to projects for engineering and incorporation. But the site construction management questioned its need that too for this much quantity of drain take-offs. As usual I played the role of mediator and concluded to opt for about 120 points.Took the responsibility of field marking the strategic requirements and got it engineered by Becrel. The end result, all members got satisfied.
Cathodic Protection and Corro-Coat application.
We did not think the absolute necessity of cathodic protection of DTA underground fire water network, thinking that three layer wrapping and coating will take care of &eliminate underground pipe wall corrosion. But towards the end of DTA project stage we observed some deterioration of headers. When we consulted Raju Narayanan for his expert advice, he recommended its incorporation both for the old DTA systems as well as for new JERP headers. Rather he took the responsibility of engineering the same and we got it executed by M/S Corrosion Controls Ltd.
More or less, that was the time M/S Kirloskar Brothers came out with Corrosion-Coat application, an upgraded substitute for conventional coal tar coating and wrapping. Reliance tried with a sample and got convinced about its excellent properties. Since then that has become Reliance Standards and made sure that KBL opened a permanent application shop within our site premises.
Having addressed the overall OSBL FW Network system, let us look into the specifics what we faced in interface between OSBL and respective ISBL headers. As engineering for various ISBL were distributed across various Bechtel offices globally, interface issue was challenging! That was very high when it came to Coker plant since that engineering was under responsibility of M/S Foster Wheeler Houston whereas OSBL was engineered at London/Mumbai offices.
Here one specific aspect has to be highlighted! As the OSBL and ISBL Fire water network and internal distribution were engineered in different geographical location offices, we ended in having two independent network with tie points ! That made us to end up with adjacent hydrant points and monitor points at 1 or2 M intervals, which I termed them as Laurel and Hardy. We could not remove/get rid off them because each party had its own logic and technical justification. But with involvement of Bechtel, TechnoFire specially Praful and Dilip Koimattur, the team envisaged to develop an overall integrated co-ordinates matched complete JERP Network including OSBL and ISBL fire water network distribution. That task responsibility was undertaken by Mr Dilip Patel of Bechtel.With lot of constraints and without their own management support, Dilip took up that challenge and performed tremendously. Our ultimate customer-JMD Fire Department are extremely satisfied and enjoying the fruits of his labour.
Contd......
Key Aspects :- Attitude, Critical challenge, Incident analysis, Lack of experience/exposure,
Leadership, Responsible, Technical issue, Team building
JERP Execution-Fire water System and Safety features
Network drain arrangement and valves
As JERP underground fire water network was about 300Kms in overall length, we realized the need for drain valve provisions at strategic locations in overall OSBL network. That became essential since the network is always filled with water under 10.5 kg/cm2g pressure, that too stagnant water is prone to develop bacteria , bad odor and lead to corrosion of header. There came the controversy!
The end user-JMD Fire department marked about 250 number of points in the overall network drawing and gave it to projects for engineering and incorporation. But the site construction management questioned its need that too for this much quantity of drain take-offs. As usual I played the role of mediator and concluded to opt for about 120 points.Took the responsibility of field marking the strategic requirements and got it engineered by Becrel. The end result, all members got satisfied.
Cathodic Protection and Corro-Coat application.
We did not think the absolute necessity of cathodic protection of DTA underground fire water network, thinking that three layer wrapping and coating will take care of &eliminate underground pipe wall corrosion. But towards the end of DTA project stage we observed some deterioration of headers. When we consulted Raju Narayanan for his expert advice, he recommended its incorporation both for the old DTA systems as well as for new JERP headers. Rather he took the responsibility of engineering the same and we got it executed by M/S Corrosion Controls Ltd.
More or less, that was the time M/S Kirloskar Brothers came out with Corrosion-Coat application, an upgraded substitute for conventional coal tar coating and wrapping. Reliance tried with a sample and got convinced about its excellent properties. Since then that has become Reliance Standards and made sure that KBL opened a permanent application shop within our site premises.
Having addressed the overall OSBL FW Network system, let us look into the specifics what we faced in interface between OSBL and respective ISBL headers. As engineering for various ISBL were distributed across various Bechtel offices globally, interface issue was challenging! That was very high when it came to Coker plant since that engineering was under responsibility of M/S Foster Wheeler Houston whereas OSBL was engineered at London/Mumbai offices.
Here one specific aspect has to be highlighted! As the OSBL and ISBL Fire water network and internal distribution were engineered in different geographical location offices, we ended in having two independent network with tie points ! That made us to end up with adjacent hydrant points and monitor points at 1 or2 M intervals, which I termed them as Laurel and Hardy. We could not remove/get rid off them because each party had its own logic and technical justification. But with involvement of Bechtel, TechnoFire specially Praful and Dilip Koimattur, the team envisaged to develop an overall integrated co-ordinates matched complete JERP Network including OSBL and ISBL fire water network distribution. That task responsibility was undertaken by Mr Dilip Patel of Bechtel.With lot of constraints and without their own management support, Dilip took up that challenge and performed tremendously. Our ultimate customer-JMD Fire Department are extremely satisfied and enjoying the fruits of his labour.
Contd......
Key Aspects :- Attitude, Critical challenge, Incident analysis, Lack of experience/exposure,
Leadership, Responsible, Technical issue, Team building
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