Annual Report 2011 Puncak Niaga Holdings Berhad Operations Review Puncak Niaga (M) Sdn Bhd 2011 WAS ANOTHER SUCCESSFUL YEAR FOR PUNCAK NIAGA (M) SDN BHD (“PNSB”) IN ITS OPERATIONS OF WATER TREATMENT PLANTS (“WTPS”) AND DAMS IN SPITE OF THE CHALLENGING SITUATION. PNSB IN 2011 MAINTAINED ITS CONSISTENTLY HIGH QUALITY AND SAFETY STANDARDS FOR THE WTPS WITH OPTIMUM CAPACITY, RESULTING IN A SUPPLY OF HIGH QUALITY TREATED WATER THAT SURPASSED THE PREVIOUS YEAR’S LEVELS. MEANWHILE, A RIGOROUS MAINTENANCE SCHEDULE AND SEVERAL FACILITIES UPGRADES ENSURED THE PEAK PERFORMANCE OF OUR INFRASTRUCTURE. WATER TREATMENT PLANT OPERATIONS Cause of Shutdown Hours of Shutdown PNSB operates, manages and maintains Raw water violation 531.94 29 WTPs with a combined capacity of 1,930 TNB power supply interruption 197.31 million litres per day. In 2011, PNSB delivered Pipe leak/burst 41.50 703.48 million cubic metres of treated water, an increase of 1.63% from 692.19 million cubic Total Hours 770.75 metres of treated water produced in 2010. The increase in the treated water production The performance of our WTPs in 2011 was was due to higher treated water demand as follows:- from Syarikat Bekalan Air Selangor Sdn Bhd (“SYABAS”). The Sungai Selangor Phase 2 (“SSP2”) WTP produced 349.92 million cubic metres of In 2011, our WTPs achieved an impressive treated water, up 0.46% on the 348.31 million 99.9% compliance with stipulated treated cubic metres recorded in 2010. The average water quality standards, based on 19,670 daily production increased to 958.68 million samples tested by both the Independent litres from 954.28 million litres in 2010, Laboratory and our Central Laboratory. exceeding SSP2 WTP’s daily design capacity of 950 million litres. As well as quality, we are dedicated to providing dependability of supply. To ensure The 26 WTPs under the Privatisation that consumers can rely on a constant supply Cum Concession Agreement dated of treated water, we endeavour to minimise 22 September 1994 (“PCCA”) produced 328.82 unscheduled WTP shutdowns. Although our million cubic metres of treated water, a 3.10% Periodical process control increased from the 318.92 million cubic metres monitoring to ensure optimisation WTPs experienced 770.75 hours of shutdowns of water treatment process for reasons beyond our control in 2011 (as recorded in 2010. The 26 WTPs’ production of shown in the table below), this did not result treated water in 2011 is the highest since 2007. in interruptions to the consumers’ water The average monthly treated water production supply, and all of our WTPs consistently met for 2011 was 27.40 million cubic metres as production demands. against 26.58 million cubic metres in 2010. The WTPs exceeded their monthly designated quantity of 26.28 million cubic metres as required in the PCCA. 092 Annual Report 2011 Puncak Niaga Holdings Berhad Operations Review Puncak Niaga (M) Sdn Bhd Wangsa Maju WTP produced 16.75 million are in use. The automatic valve operator cubic metres of treated water, an increase which is mounted on each cylinder will close of 0.18% on the 16.72 million cubic metres the cylinder’s valve upon receiving the signal recorded in the previous year. The average for shut-off. The shut-off can be triggered by daily production was 45.89 million litres as sensors such as a gas leak detector, seismic against 45.80 million litres in 2010, exceeding sensor, fi re alarm, or emergency panic button. Wangsa Maju WTP’s daily design capacity of 45 million litres and daily designated quantity Installation of Pressure Filter System of 31.5 million litres as stated in the Concession at Sg Serai WTP Agreement. Overall, A new Pressure Filter System installed at Sungai (“Sg”) Sireh WTP achieved a yearly Sg Serai WTP addressed the issues of water our 29 WTPs treated water production of 6.97 million cubic quality at this WTP in particular, on the performed well metres, 6.19% less than the 7.43 million cubic aluminium violation of treated water. Since and met SYABAS’ metres produced in 2010. The average daily the installation of the Pressure Filter System requirements production was 19.10 million litres compared completed on 1 April 2011, there has been no for treated water to 20.36 million litres in 2010. Sg Sireh WTP’s violation of water quality reported. as well as the daily design capacity is 27.28 million litres. Drinking Water Installation of Chlorine Scrubber System Quality Standards Sg Lolo (new) WTP achieved a yearly treated at Gombak WTP as stipulated by water production of 1,017,998 cubic metres in the Ministry of 2011, 27.3% more than 799,694 cubic metres The Gombak WTP did not install the Auto Health (“MOH”). produced in 2010. The average daily production Chlorine Shut Off System and the existing was 2.79 million litres compared to 2.19 million chlorine leak detection system does not contain litres in 2010. Sg Lolo (new) WTP daily design the spread of chlorine gas, to ensure the safety capacity is 2.5 million litres. of the people, especially the WTP staff, in the event of a chlorine leak. As a contingency plan, Overall, our 29 WTPs performed well and met a chlorine scrubber system was installed. The SYABAS’ requirements for treated water as system neutralises the chlorine gas by using well as the Drinking Water Quality Standards caustic soda through a random packing bed. as stipulated by the Ministry of Health (“MOH”). Electrical Load Transfer from PLANT IMPROVEMENT WORKS TNB Substation to Consumer Substation at Rantau Panjang WTP In line with our absolute commitment to Preventive Maintenance: customer satisfaction and staff well-being, In response to the inconsistent quality of Inspecting electrical activator in 2011, PNSB carried out a number of plant the power supply to Rantau Panjang WTP, improvement works, focusing on health and PNSB opted to transfer its electrical load safety measures. from the existing 33kV TNB Substation to an 11kV Consumer Substation. Since Installation of Auto Chlorine Shut-Off System the completion of the transfer works on 15 June 2011, Rantau Panjang WTP has During the year, we installed an Auto Chlorine recorded no power supply interruption at all Shut-Off System at nine of our WTPs to protect as opposed to pre-transfer works, whereby personnel and equipment from chlorine 14.42 hours of power failure and 64 incidents exposure in the event of a leak. The system is of power transience were reported between a battery-powered fail-safe device designed 1 January 2011 and 31 December 2011. to provide safety where toxic gas cylinders 093 Annual Report 2011 Puncak Niaga Holdings Berhad Operations Review Puncak Niaga (M) Sdn Bhd Rehabilitation and Upgrade of No. Source Volume Withdrawn (m3) Automated Filter Operation for Sg Batu WTP 13 Sg Rumput 285,045 Rehabilitation and upgrade works for Sg Batu 14 Sg Langat 212,437,706 WTP’s fi ltration automation system were 15 Sg Serai 410,244 carried out to enhance the system’s effi ciency, 16 Sg Lolo 1,265,321 functionality and reliability whilst increasing 17 Sg Pangsoon 1,402,091 Sg Batu WTP’s operation and maintenance 18 Sg Labu 1,030,130 effi ciency. The incorporation of the SCADA 19 Sg Sireh 9,405,039 System has enabled the fi lter backwashing 20 Batu Dam 41,311,879 process to be conducted automatically for 21 Klang Gates Dam 55,780,400 better process control. 22 Tasik Subang Dam 3,734,000 WATER FILTER PERFORMANCE Total 752,987,773 We continuously and constantly monitor the DAM OPERATIONS water fi lter performance by tracking each fi lter’s running hours as fi ltration is the fi nal PNSB operates and maintains the Sg Langat, step in the water treatment process, removing Klang Gates and Tasik Subang Dams. fi ne suspended solids remaining after the Performance in 2011 was good, and there was clarifi cation process, and further cleansing no critical storage drawndown at any of the and polishing the treated water. dams. During the year, total annual rainfall at two of the three dams’ catchments areas was Details of the Filter Performance Monitoring lower than the mean average rainfall (based on are set out under “Preserving Our data from 1998 to 2010), as shown below:- Environment” section on pages 159 and 160 of this Annual Report. Mean average Annual rainfall Variance Raw Water Drawn for Treatment rainfall 1998 – against 2011 2010 average The following table summarises the amount of Dam (mm) (mm) (%) raw water drawn from the various rivers and dams for treatment at PNSB’s WTPs in 2011. Sungai Langat Dam 2,347.00 2,456.97 -4.48 Korean delegates’ visit to SSP2 WTP No. Source Volume Withdrawn (m3) Klang Gates 1 Sg Bernam 10,687,310 Dam 2,903.40 2,818.27 3.02 2 Sg Batang Kali 4,155,650 3 Sg Dusun 404,414 Tasik Subang 4 Sg Inki 2,284,940 Dam 2,303.10 2,469.28 -6.73 5 Sg Tengi 686,370 6 Sg Gerachi 1,806,680 7 Sg Darah 170,070 8 Sg Selangor 367,377,893 9 Sg Gombak 26,707,207 10 Sg Ampang 6,960,253 11 Sg Rangkap 3,911,735 12 Sg Kepong 773,395 094 Annual Report 2011 Puncak Niaga Holdings Berhad Operations Review Puncak Niaga (M) Sdn Bhd Our operators at the Dams are guided by the CERTIFICATIONS Reservoir Operations Rules Curves (“RORC”) method to monitor, analyse and forecast ISO 14001 Environmental Management System the rainfall pattern and levels in the dams’ catchment areas.