PERSONAL HYGIENE

1.0 PURPOSE :-

To lay down a procedure for personal hygiene at workplace.

Explanation :- Personal hygiene is of great importance in preventing body contamination with

extraneous, potentially harmul agents such as chemicals and dusts.

2.0 GUIDELINES :-

2.1 Wash your hands thoroughly with soap and water or specially approved cleaning agents,

after leaving the work area.

2.2 Do not eat or store foodstuffs in work areas. Do not keep food items in refrigerators

where chemicals and biological materials are stored.

2.3 Change clothes immediately if they get contaminated with chemicals and wash the

affected part of your body with plenty of water.

2.4 Avoid wiping arms and hands to dirty cloth or to common towel.

2.5 Keep wash rooms, tollets, drinking water fountains clean and sanitary.

OPERATION OF A FLUID BED DRYER

SYSTEM CONTROL

1.1 Fluid bed Dryers are quite hazardous from explosion point of view. Drying of hybrid mixtures in the equipment makes it more hazardous. Such dryers must therefore be properly designed and suitably located as to facilitate free venting from explosion relief zone in event of a dangerous situation.

1.2 High air velocities for fluidization, attribute to high electro-static changes on the material being dried and dryer bags. The dryer must therefore be adequately earthed. Synthetic cloth have capacity to accumulate electro-static charges to a dangerous level. Proper risk assessment has to be made, if such cloth are to be used as an exception.

1.3 Every fluid bed dryer must have an explosion relief device of the required size.

1.4 In case of hybrid mixture, concentration of the vapours in the air must not exceed 25% of L.E.L (Lower Explosion Limit), of the solvent at any givven time during drying operation. Drying characterists must be duly monitored periodically with respect to concentration of vapour in Initially, cold air must be blown for atleast 15 minutes before switching on to heating.

1.5 Electrically heating must not be allowed in fluid bed dryer.

1.6 All the electrical fittings in the room must conform to ISI specifications of Flameproof Electrical fittings.

1.7 Fluid Bed Dryers produce high noise levels. Necessary engineering controls are required to be exercised.

OPERATING PROCEDURE FOR SODA ACID FIRE EXTINGUIGHER

1.0 OBJECTIVE

2.0 SCOPE

3.0 RESPONSIBILITY

4.0 PROCEDURE

To operate the extinguisher , remove the guard cap and strike the plunged against a hard surface like the floor keep the cylinder inverted.

Direct the jet emerging from the nozzle on the base of fire. When the plunger is struck , it breaks the acid phial (bottle ) .

The sulphuric acid and sodium bicarbonate solution react together to release carbon dioxide (CO₂ )

The CO₂ generated creates pressure which forces the water out of the extinguisher .

Note : the CO2 acts only as a propellant and water extinguishes the fire cooling effect.

PROCEDURE FOR OPERATION OF CARBON DIOXIDE TYPE FIRE EXTINGUIGHER

1.0 OBJECTIVE

2.0 SCOPE

3.0 RESPONSIBILITY

Q.C. Officer ,

Q.C. In-charge .

4.0 PROCEDURE

1. Carry the extinguisher to the place of the fire.

2. Remove the safety pin and operate the discharge device or unscrew the valve depending on the design.

3. Direct the jet at the base of the fire , starting at one edge and sweeping across the surface of the burning material.

4. When used in open air , the operator stand on the up- wind side of the fire and apply the gas in a downwind direction as close as possible to the fire.

5. On fires in electrical equipment first switch off the current.

6. Then direct the jet or horn straight at the fire.

MONITORING EQUIPMENT

1.0 PREAMBLE :

The air in working areas is frequently contaminated by chemical dust, gases and vapours.

If the concentration of the air contaminants exceeds permissible level, it can constitute a

danger to health. It necessary to carry out investigation of the ambient air with analytical

instrument (s) which would determine very small concentrations of hazardous substances

within a short time so that prompt actions are taken to reduce the contaminant

concentration to a safe level by suitable measures, such as providing effective ventilation,

sealing of the reaction vessels etc.

2.0 Some of the reaction equipment available in the world market are described in

brief :

2.1 Gases and vapour contaminants :-Detector tubes are available for many of the

gases found in the work environment. The gas detector system uses glass tubes filled with

gas-typical reagents absorbed on soild reagent carrier. When using with gas-typical

reagents absorbed on solid reagent carrier. When using the detector tubes a measured

quantity of air is drawn by means of a pump, which is either hand operated (bellow type )

or battery operated. The concentration of the gaseous impurities is generally measured in

terms of parts per million (ppm).

2.2 Direct reading instruments are also available to measure several gases and

vapours. Portable organic vapour analyser utilising flame ionisation detection technique is

available which provides continuous measurement of selected gaseous which provides

continuous measurement of selected gaseous / solvent vapours in ppm concentration

range.

2.3 Particulate Contaminant :- Particulate contaminants are usually measured as

milligram per cubic meter (mg / m3 ). Dust-laden air is drawn on a filter pad using

standard air sampling pump. “Total dust “ or “ respirable dust” concentrations are

measured by weighing of the filter pad. Direct reading instruments are also available for

direct measurement of particulates.

To determine specific particulate contaminants (s) the collected dust sample (on the filter

pad) is subjected to routine analysis in the laboratory.