b) You may consider installing more grease traps in your premises to cope with any increase in the volume of culinary water to be treated. You may consult qualified persons such as registered professional engineers, plumbers, or grease traps’ suppliers to assist you in your consideration.

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If you have any issues or complaints regarding your licensed waste collector, you may refer the matter to NEA at 1800-2255 6321800-2255 632 or email to Contact_NEA@nea.gov.sg.

b) Grease traps are to be installed in a location that is easily accessible for maintenance works. A properly located grease trap can prevent health risks, other public health hazards.

Maintaining your grease trap properly can help prevent: a) Offensive odours b) Flow blockage due to accumulation of oil and grease in the sewerage system c) Overflow of used water from blocked sewers onto your premise or other public areas Besides giving your patrons a pleasant eating environment, the measures that you put in place will also help to protect our precious water resources and address public health concerns. Food establishments may refer to the following recommended frequencies for maintenance. The interval to carry out maintenance work is dependent on many factors such as the condition of your private sewerage system, and you may need to increase the maintenance frequencies accordingly to site-specific conditions Download this guide to learn more about how you can maintain your grease traps. S/N Maintenance Activity for Food Establishments (Hawker Centres, Eateries, Coffeeshops, including those in Malls) Carried Out By Recommended Frequency 1 Cleaning maintenance of grease traps Licensed General Waste Collector At least once every 2 weeks (to increase if culinary water contains a higher Fats, Oil, and Grease loading.) 2 Cleaning/flushing of private sewerage system to eliminate any blockage or accumulation of encrusted grease. Sanitary contractor At least once every 6 months 3 CCTV inspection of private sewerage system for any leakage, encrusted grease, or damages. PUB-registered CCTV contractor At least once every 5 years 4 Visual inspection of inspection chambers, grease traps, and other appurtenances  Licensed plumber At least once every 5 years

c) You may submit your application online at the PUB website if you wish to install additional grease trap(s) in your premises.

Ensuring your grease trap is cleaned regularly and adequately is your responsibility. The recommended steps for cleaning grease traps are as follows:

a) Grease traps are used to pre-treat only culinary water from the food preparation area and kitchen. Used water discharged from toilets and other sanitary drain lines (private sewers) not serving the food preparation area shall be connected to the sewers and bypass the grease trap.

a) Grease traps should be sized in accordance to the amount of culinary water to be treated, and designed to allow for maximum oil-and-water separation efficiency by taking into account factors such as the temperature and velocity of used water entering the grease trap.

ii. The maximum flow rate for selection of nominal size shall be calculated based on appliances/fittings discharging into the grease trap and typical flow rate and frequency factor in EN 1825-2

b) You may consider installing more grease traps in your premises to cope with any increase in the volume of culinary water to be treated. You may consult qualified persons such as registered professional engineers, plumbers, or grease traps’ suppliers to assist you in your consideration.

A portable grease interceptor may be installed only if the provision of a standard grease trap is not feasible due either to space constraint or to other difficulties related to the site. If installed, portable grease interceptors have to be of a size that can meet the loading capacity of the eating establishment. Its design should also allow for the easy removal of the cover for maintenance works.

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Daily Checklist      a)   Check the screen chamber for accumulation of debris that may obstruct the flow of used water into the grease trap.      b)   Check the strainer bucket for accumulation of debris that may affect the effective capturing of solids in the bucket.      c)   Collect debris in a disposable bag and dispose of them as solid waste.      d)   Check that the water in the grease trap is maintained at the required level to facilitate grease separation.      e)   Check for excessive built-up of greasy waste or if the greasy waste has hardened.      f)   Check that there is no greasy waste in the inner ring chamber. You are advised to take immediate steps to repair your grease trap if you notice any damage to your grease trap, or when such damage is brought to your attention by the general waste collector or officers from the relevant authorities - PUB and the National Environment Agency (NEA). Have a Cleaning/Maintenance Schedule You should engage only competent person to clean your private sewerage system and grease trap. The interval to carry out maintenance work is dependent on many factors such as loading of your grease trap. As a guide, you may consider to clean your grease trap every fortnight by engaging a licenced general waste collector (Class C). Cleaning Checklist      a)   Check that the Contractor is a licensed general waste collector.      b)   Supervise the Contractor to ensure that the grease trap is cleaned in accordance with the PUB’s recommended steps in cleaning grease traps.      c)   Check and replace any defective or corroded covers of grease trap.      d)   Check that the covers of your grease trap are properly covered after cleaning.      e)   Check that the access to the inspection chambers and covers of your grease trap is kept free from obstruction.      f)   Check the area surrounding the grease trap is clean and does not pose any threat to public health.

Step 3: Less dense fat, grease, and oil in used water are separated as the water enters and circulates around the outer ring chamber.

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SmallGrease Trapfor Kitchen

A portable grease interceptor may be installed only if the provision of a standard grease trap is not feasible due either to space constraint or to other difficulties related to the site. If installed, portable grease interceptors have to be of a size that can meet the loading capacity of the eating establishment. Its design should also allow for the easy removal of the cover for maintenance works.

A grease trap is any interceptor, arrestor, tank, or pit situated above or under the ground that allows cooling and separation of grease from used water. Fat, oil, and grease discharged from food establishments are major causes of blockages in the public sewerage system. Without a properly sized and maintained grease trap, grease will enter the sewers and accumulate. This will result in encrustation, which will obstruct the smooth flow of used water in the sewers and cause it to overflow into your premises or other public areas. All establishments that handle food, including restaurants, coffee shops and hawker centres, require grease traps.

STEP 1: You need to check that your contractor is carrying out the cleaning task in accordance to PUB’s recommended steps for cleaning grease traps.

Homegrease trap

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When installing a grease trap, you should take note of the following: a) Grease traps are used to pre-treat only culinary water from the food preparation area and kitchen. Used water discharged from toilets and other sanitary drain lines (private sewers) not serving the food preparation area shall be connected to the sewers and bypass the grease trap. b) Grease traps are to be installed in a location that is easily accessible for maintenance works. A properly located grease trap can prevent health risks, other public health hazards. c) Owners are required to seek NEA's and PUB's approval before installation of grease traps. For more information on installing your grease trap, you can refer to PUB's Code of Practice on Sewerage and Sanitary Works here.

Practise Source Control Adopt good practices in the work area to reduce greasy waste discharge from the food preparation area into your grease trap by following these simple tips:      a)   Cover floor traps at all times      b)   Pour used oil into a separate container and not into private sewerage system      c)   Dispose leftover food into rubbish bins      d)   Use catch basket for the sink. Establish an Inspection Schedule Carry out regular visual checks on your private sewerage system and grease trap to ensure that they are in good physical condition and are not damaged in any way that may pose a health risk or safety hazard to the public. The recommended guidelines are as follows:

A grease trap is any interceptor, arrestor, tank, or pit situated above or under the ground that allows cooling and separation of grease from used water. Fat, oil, and grease discharged from food establishments are major causes of blockages in the public sewerage system. Without a properly sized and maintained grease trap, grease will enter the sewers and accumulate. This will result in encrustation, which will obstruct the smooth flow of used water in the sewers and cause it to overflow into your premises or other public areas.

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Alternatively, to speak to PUB on the maintenance of your private sewerage system including Grease Traps, please contact: PUB-ONE (24-hour toll-free hotline): 1800-2255-7821800-2255-782

ii. The maximum flow rate for selection of nominal size shall be calculated based on appliances/fittings discharging into the grease trap and typical flow rate and frequency factor in EN 1825-2

Food establishments may refer to the following recommended frequencies for maintenance. The interval to carry out maintenance work is dependent on many factors such as the condition of your private sewerage system, and you may need to increase the maintenance frequencies accordingly to site-specific conditions.

Greasetraps for commercial kitchens

Step 1: Coarse solids in used water are removed when the water passes through the screen chamber.Step 2: Smaller solids in used water are further removed at the strainer bucket.Step 3: Less dense fat, grease, and oil in used water are separated as the water enters and circulates around the outer ring chamber.Step 4: Denser remnant solids sink to the bottom of the outer ring.Step 5: Used water enters the inner ring chamber where it is discharged into the sewer via the outlet pipe through water displacement.

If you have any issues or complaints regarding your licensed waste collector, you may refer the matter to NEA at 1800-2255 6321800-2255 632 or email to Contact_NEA@nea.gov.sg.

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In addition, a portable grease interceptor must incorporate a mechanical oil-skimming device to automatically remove free-floating grease and oil from the interceptor. You may refer to the Code of Practice on Sewerage and Sanitary Works for more details.

The management of greasy waste including its collection and disposal is governed by the Environmental Public Health Act (EPHA), which is administered by the National Environment Agency (NEA). The Code of Practice for Licensed General Waste Collectors specifies the roles and responsibilities of licensed general waste collectors. It also provides guidelines on good practices in the waste collection business. Licensed general waste collectors are expected to adhere to these guidelines so as to improve the standard of their operations and raise the professionalism of service rendered.

How to install agrease trap

Daily Checklist      a)   Check the screen chamber for accumulation of debris that may obstruct the flow of used water into the grease trap.      b)   Check the strainer bucket for accumulation of debris that may affect the effective capturing of solids in the bucket.      c)   Collect debris in a disposable bag and dispose of them as solid waste.      d)   Check that the water in the grease trap is maintained at the required level to facilitate grease separation.      e)   Check for excessive built-up of greasy waste or if the greasy waste has hardened.      f)   Check that there is no greasy waste in the inner ring chamber. You are advised to take immediate steps to repair your grease trap if you notice any damage to your grease trap, or when such damage is brought to your attention by the general waste collector or officers from the relevant authorities - PUB and the National Environment Agency (NEA). Have a Cleaning/Maintenance Schedule You should engage only competent person to clean your private sewerage system and grease trap. The interval to carry out maintenance work is dependent on many factors such as loading of your grease trap. As a guide, you may consider to clean your grease trap every fortnight by engaging a licenced general waste collector (Class C). Cleaning Checklist      a)   Check that the Contractor is a licensed general waste collector.      b)   Supervise the Contractor to ensure that the grease trap is cleaned in accordance with the PUB’s recommended steps in cleaning grease traps.      c)   Check and replace any defective or corroded covers of grease trap.      d)   Check that the covers of your grease trap are properly covered after cleaning.      e)   Check that the access to the inspection chambers and covers of your grease trap is kept free from obstruction.      f)   Check the area surrounding the grease trap is clean and does not pose any threat to public health.

In addition, a portable grease interceptor must incorporate a mechanical oil-skimming device to automatically remove free-floating grease and oil from the interceptor. You may refer to the Code of Practice on Sewerage and Sanitary Works for more details.

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When used as a secondary pressure relief device, it is typically set approximately 200 PSI above the system pressure and provides additional protection for the ...

What is a tempering valve? ... A tempering valve is a 3-way mixing valve which is temperature actuated and used to temper a heated water supply by mixing the ...

For more information on installing your grease trap, you can refer to PUB's Code of Practice on Sewerage and Sanitary Works here.

STEP 2: If you are already cleaning your grease trap on a fortnightly basis in accordance to PUB’s recommended steps for cleaning grease traps, and are still unable to meet the discharge limits, your grease trap may be inadequate to cater to the volume of used water generated by your eatery.

Fat, oil, and grease discharged from eating establishments are some causes of blockages in sewers. Maintaining your grease trap properly can prevent:

The management of greasy waste including its collection and disposal is governed by the Environmental Public Health Act (EPHA), which is administered by the National Environment Agency (NEA). The Code of Practice for Licensed General Waste Collectors specifies the roles and responsibilities of licensed general waste collectors. It also provides guidelines on good practices in the waste collection business. Licensed general waste collectors are expected to adhere to these guidelines so as to improve the standard of their operations and raise the professionalism of service rendered.

STEP 1: You need to check that your contractor is carrying out the cleaning task in accordance to PUB’s recommended steps for cleaning grease traps.

Step 5: Used water enters the inner ring chamber where it is discharged into the sewer via the outlet pipe through water displacement.

Food establishments may refer to the following recommended frequencies for maintenance. The interval to carry out maintenance work is dependent on many factors such as the condition of your private sewerage system, and you may need to increase the maintenance frequencies accordingly to site-specific conditions

SmallGrease Trapunder sink

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Besides giving your patrons a pleasant eating environment, the measures that you put in place will also help to protect our precious water resources and address public health concerns.

c) You may submit your application online at the PUB website if you wish to install additional grease trap(s) in your premises.

Practise Source Control Adopt good practices in the work area to reduce greasy waste discharge from the food preparation area into your grease trap by following these simple tips:      a)   Cover floor traps at all times      b)   Pour used oil into a separate container and not into private sewerage system      c)   Dispose leftover food into rubbish bins      d)   Use catch basket for the sink. Establish an Inspection Schedule Carry out regular visual checks on your private sewerage system and grease trap to ensure that they are in good physical condition and are not damaged in any way that may pose a health risk or safety hazard to the public. The recommended guidelines are as follows:

Grease Trapfor Sink

Ensuring your grease trap is cleaned regularly and adequately is your responsibility. The recommended steps for cleaning grease traps are as follows:

a) Grease traps should be sized in accordance to the amount of culinary water to be treated, and designed to allow for maximum oil-and-water separation efficiency by taking into account factors such as the temperature and velocity of used water entering the grease trap.

Food establishments may refer to the following recommended frequencies for maintenance. The interval to carry out maintenance work is dependent on many factors such as the condition of your private sewerage system, and you may need to increase the maintenance frequencies accordingly to site-specific conditions.

STEP 2: If you are already cleaning your grease trap on a fortnightly basis in accordance to PUB’s recommended steps for cleaning grease traps, and are still unable to meet the discharge limits, your grease trap may be inadequate to cater to the volume of used water generated by your eatery.

Besides giving your patrons a pleasant eating environment, the measures that you put in place will also help to protect our precious water resources and address public health concerns.

Besides giving your patrons a pleasant eating environment, the measures that you put in place will also help to protect our precious water resources and address public health concerns.

Fat, oil, and grease discharged from eating establishments are some causes of blockages in sewers. Maintaining your grease trap properly can prevent:

Alternatively, to speak to PUB on the maintenance of your private sewerage system including Grease Traps, please contact: PUB-ONE (24-hour toll-free hotline): 1800-2255-7821800-2255-782