Lush green gardens sprawled across 12 acres of land, 80,000 square metres of velvety lawns lined with shrubs, ground covers, areca palms, fishtail palms, ficus and bamboo varieties and the shade of more than 10,000 trees – this is the commitment towards environment management at the Karaikal plant of Chemplast Sanmar’s PVC division.
The continuous efforts of the dedicated team managing the green belt and horticulture at Karaikal were rewarded when this industrial garden won the first prize in the Farm Fest 2006 competition, conducted by the Government of Pondicherry, Agriculture Department, Karaikal. Farm Fest 2006, was held between 3 and 5 March at Beach Garden, Karaikal.
The Karaikal plant participated in the Ornamental Garden category (Industrial Garden). A team from Agriculture Department inspected all the industries for assessment on 1 March 2006. Committed towards excellence in environment management, the team at Karaikal treat green belt and horticulture development as one of their prime objectives, coming up with innovative solutions for maintaining the green belt area through an irrigation system, that uses recycled water for the garden.
The Karaikal plant entered Farm Fest in 2002, 2003 and 2004, and was recognised in all the earlier Farm Fests. But this is the first time that the Karaikal garden won the first prize. A proud moment indeed for the PVC division at Karaikal.
S Venkatesan, General Manager, Operations, Chemplast Sanmar, receiving the prize from Dr
R Sathiaseelan, Director of Agriculture, Government of Pondicherry, at the valedictory function of Farm Fest 2006.
The boiler feed water regulator valve used in many power plants is required for the main operation of the unit. This valve is to control the flow rate of feed water during normal operations when the boiler is under pressure. The boiler feed water start up valve does the initial filling. During the initial operation, the service conditions for the feed water regulator valve nearly match those of the feedpump recirculation valve, with the exception of the flow rates. The regulator valve begins the transition of the flow from the recirculation valve and will open as the recirculation valve closes (See figure). The service conditions for the regulator valve vary depending on plant size and unit operation.
Inlet pressure: 2800 ~ 3200 psig
Pressure drop: 100 ~ 600 psid
Temperature: 300 ~ 400º F
Fisher traditionally designed the large, high capacity 12" EH valve for this application. The modified equal percentage characteristic gives high capacity.
Typical Feedwater System
As the Fisher traditional 12" EH valve is not at a competitive price, Fisher Asia Pacific, along with Marshalltown, designed a new model 12" CHP (compact high pressure model). The pilot sample manufactured at Fisher India was a first for Fisher worldwide and successfully passed the test. The castings of the body, bonnet, and cage are sourced from Sanmar Foundries Ltd.
T Narita, A Ravi Kumar, Lionel Kwok, Sam Tomochika and G K Pillai during testing done
by the AP Power team.
This design of the 12" CHP has with 40% less weight, 40% less machining and assembly time compared to the 12" EH. The first order received for this design from Bharat Heavy Electricals Limited for 4 nos. to CSEB Korba 2 x 250 MW with a potential of 8 more quantities for the Raigad power plant is awaited. 12 inch CHP has been designed to best fit for 300 – 1000 MW boilers. This design has the potential of appx. 100 units per annum in such applications.
Xomox Sanmar has expanded its manufacturing range through the development of a 20" Class 300 Sleeved Plug Valve, the first out of an order for six valves placed by Essar Steel Ltd., Hazira, to be used in transporting crude oil from the jetty to their Works. Team XOMOX readily accepted the challenge to develop the valve within the shortest possible lead time with enthusiasm and optimism. The project was kickstarted by ordering the casting requirements of an LCB body, plug and cover castings on Sanmar Foundries Ltd (SFL) with stringent technical delivery conditions.
The 1000 kg body casting and the other two parts comprising plug and cover castings were all successfully poured to radiographic quality in record time at SFL. The PTFE sleeve, which alone weighs 92 kg, was moulded in a single shot— probably for the first time in India— through a unique moulding process. The difficult control body port lip machining, plug taper grinding, pressure ribs taper broaching and sleeve taper were finished accurately with innovative fixturing. The indigenously developed top seal assembly with fire safe cartridges qualified the valve further to stringent fire safe test standards. A new and efficient enclosed gear mechanism makes the rotation of the plug smooth and effortless. The operation of fitting the sleeve inside the body went through flawlessly and the valve operation was extremely smooth belying all expectations of a difficult time during assembly and testing. The completion of this valve from the development stage to full assembly and testing within 6 months of receiving the order is indeed a feather in the cap of Xomox Sanmar Ltd.