Comunicación de las Causales de Ingreso como Recaudación

33.1

What is compressed Air and why required

Compressed air system is designed to supply oil free (Non–lubricated) compressed air to the various use points.

33.2

Make - Chicago Pneumatic.

Capacity - 275 CFM (2 Nos)

33.3

General Flow

The Air compressor is required to prepare compressed air at about 6.5 Kg/cm2which is used in the production department as utility for equipments and as an instrument air. Atmospheric air is sucked through air suction and pass through 20 micron filter. The filtered air is feed to compressor to compress the air from atmospheric pressure to about 6.5 to 7.2 Kg/Cm2. The compress air generated is passes through coolant to cool the compressed air which is delivered by the air compressor. Moisture gets condensed and moisture is separated out in moisture separator. The compressed air filtered through 0.5 µ and 0.2 µ filter, where the viable and non viable contamination removed. The receiver is used to store the compressed air generated by the compressor. The compress air is then passes through air dryer unit to remove moisture before sending to the plant at the user point.

33.5

33.7

Test

In house validation was performed for Microbial test. Analysis for specific parameters i.e. CO, CO2, NO/NO2, SO2, Oil mist, Water Vapour, Dew point

Non viable particle count test were performed by External agency.

33.8

Method for Dew Point Test

Dew Point test kit having following component.  Closed Glass Chamber

 Condenser Pipe  Digital Thermometer

Take carefully and place the dew point testing kit at sampling point.

Connect the compressed air line with the air compression port of dew point testing kit. Open the compressed air line valve.

Transfer the acetone in the condenser pipe.

Place the thermometer probe in the condenser pipe and ensure the probe proper in the acetone solution. Slow add the dry ice in the acetone to decrees the temperature inside the condenser tube.

Carefully observe the surface of condenser tube inside the glass chamber for condense of compressed air water.

When observe condense on surface of condenser tube recorded the temperature which is dew point. Repeat the test for two times more on same sampling point.

33.9

Method for Compressed air test kit for air detector tube

Testing parameter for detector tube of different test.

Parameter for Water vapour content

Gastec Tube No : 6

Measuring Range : 0 to 18 mg/Ltr

Sampling Volume : 100 ml

Sampling Rate : 100 ml/minutes

Sampling Time : 01 minutes

Colour Change : Green to Purple

Parameter for oil traces.

Gastec Tube No : 109AD

Measuring Range : 0.2 to 5.0 mg/m³

Sampling Volume : 20,000 ml

Sampling Rate : 1 Ltr/minutes

Sampling Time : 20 minutes

Colour Change : Pale Red to Pale Blue

Parameter for Oxygen Content.

Gastec Tube No : 31 B La

Measuring Range : 6 % to 24 %

Sampling Volume : 50 ml

Sampling Rate : 50 ml/minute

Sampling Time : 1 minute

Colour Change : Black to White

Parameter for Carbon Dioxide.

Gastec Tube No : 2LC

Measuring Range : 200 to 3000 ppm

Sampling Volume : 150 ml

Sampling Rate : 100 ml/minute

Sampling Time : 1.5 minute

Parameter for Carbon Monoxide.

Gastec Tube No : 1LC

Measuring Range : 5 to 50 ppm

Sampling Volume : 300 ml

Sampling Rate : 100 ml/minute

Sampling Time : 3 minute

Colour Change : Yellow to Dark Brown

Parameter for Nitric oxide and Nitrogen Dioxide.

Gastec Tube No : 11 L

Measuring Range : 0.2 to 0.5 ppm

Sampling Volume : 200 ml

Sampling Rate : 100 ml/minute

Sampling Time : 2 minute

Colour Change : White to Yellowish Orange

Parameter for Sulfer Dioxide.

Gastec Tube No : 5 La

Measuring Range : 2 to 30 ppm

Sampling Volume : 200 ml

Sampling Rate : 100 ml/minute

Sampling Time : 2 minute

Colour Change : Blue to Yellow

Compressed air testing kit is having following component.

 Compressed air connection port.

 Compressed air pressure controller regulator to control the pressure of compressed air at compressor air inlet.

 Pressure gauge.

 Air flow meter with regulator  Air detector tube holder pipe.  Stop watch.

All components are permanently adhered to SS plate except stop watch.

Take carefully and place the testing kit at sampling point where the quality of compressed air to be tested.

Open the compressed air valve to control the required pressure of compressed air at compressed air inlet.

Maintain the required air pressure by air pressure controller valve.

Set the air pressure (2 Kg/cm²) by using the air pressure controller regulator.

Set the air flow by using the air flow meter with regulator as per requirement of test (See detector tube literature)

Break the detector tube from the both end and place the detector tube in tube holder pipe. Connect the holder pipe with detector tube at outlet of flow meter.

Start the stop watch for take reading of time as per test requirement.

Remove the gas detector tube from outlet of flow meter after completion of sampling. Check and record the reading on gas detector tube for reference.

Mark the observation on the detector tube for reference.

Method for Total Microbial Count (TMC)

Test for bioload (by membrane filtration method)

Media used: Soyabean casein digest broth. ( Transfer 100 ml of SCDB in a 250 ml conical flask cover the pipette ends with aluminium foil and sterilize.

Preparation of SCDA plates.

Equipments.

Conical flask 250 ml capacity. Flow meter.

Membrane filtration unit with sterile 0.22 um membrane filter.

Sampling Procedure.

Only trained and evaluated personnel should collect the samples.

Precaution to be taken by the microbiologist while connecting inlet of compressed air to the sterile flask. Nose mask and gloves to be worn.

Carry the flask in respective areas.

Connect the sterile flow meter tubing’s to compressed air sampling pre-determined points. Carefully insert the outlet of flow meter in to the flask containing broth.

Set the flow rate 50 Ltrs/minute and bubble the air for 20 minute so as to sample 1,000 liters of air. On completion of sampling remove the tubing from the flask and cover the ends with aluminium foil. Identify each flask with proper status label indicating sampling point, sampling date and bring to the microbiology department.

Method of testing.

Test to be carried out in clean room under laminar flow only.

Use filter cone with membrane filter and transfer the sample from the conical flaskto the filter holder. Follow the membrane filtration technique.

After completion of filtration remove the membrane filter using sterile forceps and place it on pre-incubated SCDA plate.

Incubate the inverted plate at 30ºC to 35ºC for 72 hours.

At the end of incubation count the number of colonies. Calculate the TAMC/1,000 Ltrs of compressed air.

If any microbial growth is there after incubation identify the colonies morphologically.

Limits:

Using autoclaved media prepare negative controls for each days testing. Growth promotion test to be performed for positive control. TAMC/1000 LTS OF COMPRESED AIR NMT 5 CFU.