Safty+Procedure

Back Safty Procedure Safe working conditions help to prevent injury to people and damage to computer equipment. A safe workspace is clean, organized, and properly lighted. Everyone must understand and follow safety procedures.



Electrostatic Discharge (ESD) 
 * Static electricity is the buildup of an electric charge resting on a surface. This buildup may zap a component and cause damage.
 * At least 3,000 volts of static electricity must build up before a person can feel ESD, but less than 30 volts of static electricity can damage a computer component.

To prevent ESD Damage


 * Use antistatic bags to store components




 * Use grounded mats on workbenches




 * Use grounded floor mats in work areas




 * Use antistatic wrist straps when working on computers



Power Fluctuation


 * AC power fluctuations can cause data loss or hardware failure:
 * Blackouts, brownouts, noise, spikes, power surges
 * <span style="font-family: Georgia,serif; font-size: 120%;">To help shield against power fluctuation issues, use power protection devices to protect the data and computer equipment:


 * <span style="font-family: Georgia,serif; font-size: 120%;">Surge suppressors




 * UPS




 * <span style="font-family: Georgia,serif; font-size: 120%;">SPS

<span style="font-family: Georgia,serif; font-size: 120%;">Proper Disposal


 * <span style="font-family: Georgia,serif; font-size: 120%;">Batteries from portable computer systems may contain lead, cadmium, lithium, alkaline manganese, and mercury. Recycling batteries should be a standard practice for a technician.


 * <span style="font-family: Georgia,serif; font-size: 120%;">Monitors contain up to 4 pounds of lead, as well as rare earth metals. Monitors must be disposed of in compliance with environmental regulations.


 * <span style="font-family: Georgia,serif; font-size: 120%;">Used printer toner kits and printer cartridges must be disposed of properly or recycled.


 * <span style="font-family: Georgia,serif; font-size: 120%;">Contact the local sanitation company to learn how and where to dispose of the chemicals and solvents used to clean computers.

<span style="font-family: 'Comic Sans MS',cursive; font-size: 120%;">Tools for the Job
 * <span style="font-family: Georgia,serif; font-size: 120%;">Skilled use of tools and software makes thejob less difficult and ensures that tasks are performed properly and safely.

<span style="font-family: 'Comic Sans MS',cursive; font-size: 120%;">ESD Tools <span style="font-family: Georgia,serif; font-size: 120%;">antistatic wrist strap, mat



<span style="font-family: 'Comic Sans MS',cursive; font-size: 120%;">Hand Tools

<span style="font-family: Georgia,serif; font-size: 120%;">screwdrivers, needle-nose pliers



<span style="font-family: 'Comic Sans MS',cursive; font-size: 120%;">Cleaning Tools

<span style="font-family: Georgia,serif; font-size: 120%;">soft cloth, compressed air can



<span style="font-family: 'Comic Sans MS',cursive; font-size: 120%;">Diagnostic Tools

<span style="font-family: Georgia,serif; font-size: 120%;">digital multimeter, loopback adapter



<span style="font-family: Georgia,serif; font-size: 120%;">Software Tools


 * <span style="font-family: Georgia,serif; font-size: 120%;">Disk management tools
 * <span style="font-family: Georgia,serif; font-size: 120%;">Fdisk - create and delete disk partitions
 * <span style="font-family: Georgia,serif; font-size: 120%;">Format - prepare a hard drive prior to use
 * <span style="font-family: Georgia,serif; font-size: 120%;">Scandisk or Chkdsk - check for physical errors on the disk surface
 * <span style="font-family: Georgia,serif; font-size: 120%;">Defrag - optimize use of space on a disk
 * <span style="font-family: Georgia,serif; font-size: 120%;">Disk Cleanup - remove unused files
 * <span style="font-family: Georgia,serif; font-size: 120%;">Disk Management - creates partitions and formats disks (GUI interface)
 * <span style="font-family: Georgia,serif; font-size: 120%;">System File Checker (SFC) – scans the operating system critical files and replaces any files that are corrupt

<span style="font-family: 'Comic Sans MS',cursive; font-size: 120%;">Proper Use of Antistatic Wrist Strap


 * <span style="font-family: Georgia,serif; font-size: 120%;"><span style="font-family: 'Comic Sans MS',cursive; font-size: 120%;">﻿ Connect the cable to the metal chassis of the computer


 * <span style="font-family: Georgia,serif; font-size: 120%;">Wrap the strap around your wrist


 * <span style="font-family: Georgia,serif; font-size: 120%;">The connection will keep your body at the same voltage (potential) as the computer


 * <span style="font-family: Georgia,serif; font-size: 120%;">Attach the wire on the same side of the equipment as the arm wearing the antistatic wrist strap to keep the wire out of the way while you are working.

<span style="font-family: 'Comic Sans MS',cursive; font-size: 130%;">Proper Use of Antistatic Mat <span style="font-family: 'Comic Sans MS',cursive; font-size: 120%;">
 * <span style="font-family: Georgia,serif; font-size: 120%;">Lay the computer on the mat.


 * <span style="font-family: Georgia,serif; font-size: 120%;">Connect the computer to the mat with the cable.


 * <span style="font-family: Georgia,serif; font-size: 120%;">Connect the mat to a reliable electrical ground with its cable.


 * <span style="font-family: Georgia,serif; font-size: 120%;">Now, you and the computer are at ground potential.

<span style="font-family: 'Comic Sans MS',cursive; font-size: 130%;">Proper Use of Hand Tools <span style="font-family: 'Comic Sans MS',cursive; font-size: 120%;">
 * <span style="font-family: Georgia,serif; font-size: 120%;">Use the proper type and size of screwdriver by matching it to the screw.


 * <span style="font-family: Georgia,serif; font-size: 120%;">Phillips, Flat Head and Hex are the most common types.


 * <span style="font-family: Georgia,serif; font-size: 120%;">Do not over tighten screws because the threadsmay become stripped.

<span style="font-family: 'Comic Sans MS',cursive; font-size: 130%;">Proper Use of Cleaning Materials

<span style="font-family: Georgia,serif; font-size: 120%;">To clean computers and accessories:


 * <span style="font-family: Georgia,serif; font-size: 120%;">Use mild cleaning solution and lint-free cloth to clean computer cases, outside of monitor, LCD screen, CRT screen, and mouse.


 * <span style="font-family: Georgia,serif; font-size: 120%;">Use compressed air to clean heat sinks.


 * <span style="font-family: Georgia,serif; font-size: 120%;">Use Isopropyl alcohol and lint-free swabs to clean RAM.


 * <span style="font-family: Georgia,serif; font-size: 120%;">Use hand-held vacuum cleaner with a brush attachment to clean a keyboard.


 * <span style="font-family: Georgia,serif; font-size: 120%;">CAUTION: Before cleaning any device, turn it off and unplug the device from the power source.

<span style="font-family: 'Comic Sans MS',cursive; font-size: 130%;">Summary <span style="font-family: Georgia,serif; font-size: 120%;"> <span style="font-family: Georgia,serif; font-size: 120%;">· Technicians are recommended to follow many safety steps and tools when assembling or disassembling PC components to avoid ESD damage.To prevent ESD damage, the following tools must be used: antistatic bags, wrist straps and mats.Also, Devices such as Surge suppressors, USP and SPS must be used to prevent power fluctuation which might damage computer components and data. Addtionally, Software tools is the disk management tools that used to maintain date and organizing files. It includes: Fdisk, format, disk management and many others.

<span style="font-family: 'Comic Sans MS',cursive; font-size: 12pt;">Resource

<span style="font-family: Georgia,serif;">CISCO Networking Academy Program Website