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Showing posts from November, 2009

FALLS / ACCIDENTS AND FIRST AID

Falls / Accidents If you should fall off the ladder, try not to stiffen your muscles. Try to absorb the shock by bending your arms and legs, lossely, to give spring action when you hit the ground. Roll over to the direction of the fall. First Aid 1.0 Do not move victim when internal injuries or broken bones or injury to neck or spine is suspected. Servere pain in chest, abdomen, legs inability to move, unconsciousness are some of the symptoms. 1.1 Call or medical help immediately, and while waiting for help give first aid for bleeding / shock / breathing failure. (see chapter 8.0 on personnel Health Emergencies)

ELECTRICAL AND NON-ELECTRICAL LOCKOUT

1.0 PURPOSE :- To provide guidelines or locking out equipment or machinery. Electrical and non-electrical systems are locked out to prevent unexpected energization, start-up or release of stored energy. The lock-out device is a mechanism that allows the use of a padlock to hold switch, lever or valve handle in the “off” position. In the market switches and valves are availables with buit-in lock out device. However, where such arrangement is not available, it should be modified so that locks can be used. 2.0 GUIDELINES :- 2.1 Turn off equipment or machine at the point of operation. 2.2 Isolate the equipment by operating/disconnecting the switch, valve or any other energising device. Ensure stored energy such as rotating fly-wheels hydraulic systems, air or steam pressure etc. are dissipated. 2.3 Lock operation lever in the “off” position with a locking device. If multilock device is provided, then ensure each person involved to place a separate lock retain...

ELECTRO-STATIC HAZARDS

1.0 INTRODUCTION Whenever two dissimilar materials come in contact, a transfer of electrons from one material to the other takes place. As a result, one material acquires an excess of –ve charges and the other an equal excess of +ve charges. If the two materials are now separated, each will carry an excess of charge, and electrostatic charging has taken place. If both materials are conductors (e.g. 2 metals), the high conductivity allows equalization of charges to take place along the contact surface during the separation so that no measurable excess charge is present on complete separation. However, when one of the material involved is non-conductor (e.g. plastics), static charge occurs. NOTE In the case of dust particles or liquid droplets moving in gases, charging is always to be expected, irrespective of the conductivities of the substances involved. When charging process is complete, the excess charge will start to equalise themselves. The discharge take place expone...