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Battery Manual Test
| Question | Answer |
|---|---|
| What are the components of a Risk Assessment? | Identify Hazards Assess Risks Implement Risk Control Elimination Substitution Engineering Controls Awareness Administrative Controls PPE |
| What are the 10 items that should be on a Battery Room Sign? | Precaution Signs Electrolyte Cell Area Authorized Personnel Only Energized Electrical Circuits Arc Flash Hazard Hydrogen Gas Corrosive Liquids Exit No Smoking or Open Flames Eye Protection Required |
| What PPE should be worn within the flash boundary? | FRC Arc-rated clothing Non conductive hardhat with face shield Eye protection Ear protection Rubber insulated gloves with leather exteriors Safety boots Balaclava |
| What are the 3 tools for safety? | Job site inspection Safety meetings Enforcement |
| When should you approach conductive objects? | Employee is insulated Equipment is insulated Employee is isolated |
| What PPE should be worn while working with batteries? | Goggles/face shield Acid resistant suit or sleeves Apron Nitrile gloves Eye wash kit Spill kit Extinguisher Insulated tools |
| What are the 2 types of batteries? | Primary (cannot be recharged) Secondary (can be recharged) |
| What is a battery cycle? | A full discharge and full recharge |
| How do you explain an amp hour? | 1 amp for 1 hour= 1 amp hour 10 amps for 10 hours= 100 amp hours |
| What is oxidation? | A loss in electrons |
| What is reduction? | A gain in electrons |
| What does OIL/RIG stand for? | Oxidation Is Loss Reduction Is Gain |
| What are the types of electrolytes? | Sulfuric acid Sodium hydroxide |
| When should insulated gloves be inspected? | Every 12 months |
| What is OSHA's definition of electrical safety? | "Recognizing hazards associated with the use of electrical energy and taking precautions so that hazards do not produce injury or death" |
| What kind of circuit are batteries connected for 135v? | Series |
| What does VRLA stand for? | Valve Regulated Lead Acid |
| What are types of VRLA batteries? | Gel Electrolyte Acid Glass Mating |
| What are the types of wet cell batteries? | Lead-acid Lead-calcium Lead-selenium Nickel-cadmium |
| What direction does current flow when charging a battery? | Positive to Negative |
| What are the types of plates? | Flat Tubular Round |
| What direction does current flow when discharging a battery? | Negative to Positive |
| What happens to the acid when discharging? | Acid is absorbed into the plates |
| What happens to the acid when charging? | Acid is forced out of the plates |
| What components make up the exterior of a flooded battery? | Case Flame Arrestor Aqua-Gen Post Seals Post Bus Bar/Hardware |
| What components make up the exterior of a VRLA battery? | Case Pressure Release Vent Post Post Seal Bus Bar/Hardware |
| What components make up the interior of a flooded battery? | Post Strap Grid Plates Separator Footing Electrolyte |
| What components make up the interior of a VRLA battery? | Strap Grid Plate Separator Post Footing Electrolyte |
| What can affect the life expectancy of a battery? | Redox Temperature Charging Voltage AC Ripple Discharge Profile Water Usage |
| What is important to know about checking voltage with a Cellcorder? | Do not measure voltage greater than 20VDC |
| How does gas recombine in VRLA batteries? | Electrolysis, water is lost during this process. |
| How does an Aqua-Gen work? | Gases that are released from the battery go into the chamber and react with Palladium to recombine and drip back down into the electrolyte |
| How does a flame arrestor work? | Allows Hydrogen to escape and prevents ignition sources from entering the battery |
| What should you install during a pre install of batteries? | Hydrogen Gas Monitor Fire Alarm Air Exchange Calculations Air Conditioner Containment |
| What should be taken into consideration before installing batteries? | Seismic zoning |
| What parts make up post construction? | Bolt Holes O-Rings Cover Post Post Cap Top Nut Seal Bottom Nut Seal Post Seal |
| What is the nominal specific gravity value? | 1.215 |
| According to IEEE 1578, what depth should a containment tray be? | 4 in. |
| When installing the batteries on a rack, how should you load the batteries? | Bottom then top |
| When placing batteries on the rack how should you position them? | For bus bar installation |
| What should be done to hardware before installation onto the batteries? | Cleaned of oxidation and greased |
| What should you do before connecting charging cables to a new battery string? | Check voltage difference |
| What voltage difference in voltage do flashes start to occur? | 10VDC |
| What water can you use to replenish battery levels? | De-ionized or De-mineralized water |
| What are the 4 types of discharge tests for batteries? | Acceptance Performance Modified Performance Service Test |
| What is an acceptance test? | Test determines battery capacity and verification that it meets duty cycle |
| What is a service test? | Test to determine if the battery will meet duty cycle |
| At what percentage has a battery string failed a capacity test? | 85% |
| What are the 2 types of battery capacity tests? | Rate-adjusted Time-adjusted |
| What is the minimum voltage of a 60 cell battery? | 1.75v per cell |
| How does a battery make power? | Oxidation reduction (REDOX) reactions are converting chemical energy into electrical energy |
| What is hydration? | A battery is OVER-discharged and the lead dissolves into water. |
| What is a thermal runaway? | When the heat generated within the battery cannot be dissipated. |
| What can thermal runaway lead to? | Fire Acid-leaking Excessive gas Explosion |
| What is copper contamination? | Copper inside the posts is no longer isolated from the electrolyte. Copper bonds to the negative post. |
| What can cause a cell jar to crack? | Positive plate growth |
| What causes a white powder to be present on the lower batteries of a battery rack? | Residual acid from the top batteries reacting with the rack itself. |
| What would cause a thick white powder to be present on hardware? | The stainless steel of the hardware reacting with the acid |
| What causes a leafy green/blue substance to be present on bus bars? | Acid reacting with copper |
| What causes sulfation on battery plates? | Copper contamination which can cause thousands of tiny short circuits |
| What is important to know about installing bus bars? | possible lead exposure |
| What is a Gel Cell battery? | A VRLA with a silica or sand mixed with the sulfuric acid to thicken it |
| What is a Absorbed Glass Mat battery? | Electrolyte is held in glass mats. Glass fibers are woven into mat to increase surface area. |
| When does an internal valve on a VRLA battery open? | 2 psi |
Created by:
TannerIPB
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