What is DOBI ?

• Acronym for "Deterioration of Bleaching Index"
• Easily obtained by simple spectrophotometric measurement and is used to predict the ease of bleaching of crude palm oil during refining
• Is defined as the numerical ratio of the uncorrected absorbance at 446nm to that at 269nm
• DOBI = (Absorbance at 446nm) / (Absorbance at 269nm)
• Crude palm oil quality : DOBI - Good (3-4) ; Average (2-3) ; Poor (<1)
• Absorbance 446 is related to carotene content
• Absorbance 269 is related to secondary oxidation of crude palm oil
• Factors effecting these two parameters will thus also affect the DOBI value
• To have good DOBI value, attempts must be taken to minimise deterioration of carotene and also oxidation

Source - T.S.Tang /MPOB

FIELD DAY : BOUSTEAD FFB GRADING STANDARD

QUALITY - We Make It Happen

MPOC : Malaysia Palm Oil

GROSS CALORIFIC VALUE

The Gross Calorific Values of various palm products and that of medium industrial fuel oil are as follows ;

• Crude palm oil - 10,000 k.cal/kg
• Crude palm kernel oil - 9,488 k.cal/kg
• Crude palm stearin - 9,833 k.cal/kg
• Palm acid oil (2% mois) - 9,571 k.cal/kg
• Fuel oil - 10,278 k.cal/kg

Source - Engineering News

RSPO : The Gathering Momentum

DECIDING ON THE REQUIRED BOILER WATER TDS

# Boiler Type ; Maximum TDS (ppm)

• Lancashire ; 10,000 ppm
• 2 - Pass Economic ; 4,500 ppm
• Package and 3 - Pass Economic ; 3,000 - 3,500 ppm
• Low Pressure Water Tube ; 2,000 - 3,000 ppm
• Medium Pressure Water Tube ; 1,500 ppm
• Coil Boilers and Generators ; 2,000 ppm

The above figures are offered as a broad guide only, the boiler maker should always be consulted for specific recommendations.

Source - Spirax Sarco

UPGRADING TO ISO 9001 : 2008

• The ISO 9001 : 2000 standard has been revised
• The revised standard, ISO 9001 : 2008 was published on 15th. November 2008
• It is stated that any existing certification issued to ISO 9001 : 2000 shall not valid 24 months after the publication of the new standard i.e. 14th. November 2010

Source - Sirim QAS