Swe: Tag Out, Batteries

Front 1

5.2.1 What size cutters require two tag out logs?

Back 1

Larger than 200ft. Ops and Eng for WHEC (378), WMEC (200), WAGB (420)

Front 2

What areas are covered by Ops tag out logs?

Back 2

All systems and equipment not Engineering. Maintained on bridge

Front 3

What COMDINST is the Equipment Tag-Out Procedure?

Back 3

COMDTINST 9077.1C

Front 4

What form Number is the Danger/Caution Tag Out Index and Record of Audit Sheet?

Back 4

CG5603

Front 5

What form number is the Tag-Out Record Sheet?

Back 5

CG5604

Front 6

5.3.1 What types of charge are there for batteries? (6)

Back 6

1) Initial:

2) Normal:

3) Float:

4) Boost

5) Emergency

6) Temp Compensation

Front 7

What is an Initial Charge?

Back 7

The first Charge on a new battery, bringing it to full capacity

Front 8

What is the average resistance of the human body?

Back 8

500 ohms

Front 9

What does 1 mA feel like?

Back 9

A shock is felt

Front 10

What does 10 mA feel like?

Back 10

A person may be unable to let go

Front 11

What does 100 mA feel like?

Back 11

Shock may be fatal if sustained for one second or more.

This determines the 30-volt threshold above

which personnel protective equipment for energized work is required.

Front 12

What are two major hazards with an arc flash?

Back 12

1) the arc temperature, and 2) the incident energy.

Front 13

What is the Flash Protection Boundary calculated at?

Back 13

4 feet for 450v

Front 14

What do Static Automatic Bus Transfers use to provide dual power supplies to individual loads.?

Back 14

SCRs (Silicon-controlled rectifiers)

Front 15

At what voltage does a worker need to have a harness and/or a deadman stick to work on equipment?

Back 15

300 volts

Front 16

What is a battery cell?

Back 16

A storage battery cell is a unit consisting of positive and negative plates, separators, a cell cover and

electrolyte,

Front 17

What sealing compound is used for batteries?

Back 17

asphaltic bituminous

Front 18

Batteries with polystyrene instead of rubber parts are sealed with what?

Back 18

polystyrene cement.

Front 19

What is the discharge rate of a battery?

Back 19

The constant current which the battery at 27° C (80° F), can supply continuously for 10 hours

Front 20

What is the average internal psi of a sealed battery?

Back 20

2-3 psi

Front 21

At what psi does a battery valve's operating point operate?

Back 21

4-6 psi

Front 22

What is the negative pole of a lead acid battery made out of?

Back 22

(Pb) sponge lead

Front 23

What is the positive pole of a lead acid battery made out of?

Back 23

(PbO2) Lead Peroxide

Front 24

What is battery eloctrolyte made of?

Back 24

Water and sulfuric acid

Front 25

How high should electrolyte in a battery be filled?

Back 25

9mm (3/8in) above the plate separaters

Front 26

What is the specific gravity of the electrolyte in a fully charged battery?

Back 26

1.220 specific gravity,

Front 27

What is the specific gravity of the electrolyte in a fully discharged battery?

Back 27

1.060

1.75v

Front 28

What's the voltage of a fully discharged vented battery?

Back 28

2.05v

Front 29

What's the voltage of one cell of a fully charged vented battery?

Back 29

2.15v

Front 30

What is a low voltage limit on a battery?

Back 30

the limit set by the manufacturer as that beyond which very little useful energy can be obtained.

Front 31

What is a normal charge on a battery?

Back 31

A routine charge given in accordance with the data on the nameplate during ordinary cyclic

operation to restore the battery to a substantially fully charged condition.

Front 32

What is a boost charge?

Back 32

An extended charge given periodically to ensure that all the sulfate is driven from the plates

and all cells are restored to a uniform maximum specific gravity.

Front 33

What is the float charge for vented batteries?

Back 33

2.15v

Front 34

What is the float charge for sealed batteries?

Back 34

2.25v

Front 35

What is the formula for computing float voltage of a sealed battery?

Back 35

Float Voltage= (2.49-.003t)N
t=ambient temp in F

N=number of cells

Front 36

What is the formula for computing float voltage of a vented battery?

Back 36

=(2.39-.003t)N

Front 37

How often should batteries on stand by service be charged?

Back 37

No less than once a month regardless of specific gravity

Front 38

What is the longest you should let a battery stand in discharge condition before charging?

Back 38

no more than 24 hours

Front 39

Do not allow the temperature of the electrolyte to exceed what temperature?

Back 39

52C (125F)

Front 40

When is the normal charge of a vented battery complete? A sealed battery?

Back 40

When the specific gravity, corrected for temperature, has reached a value within five points (0.005) of that obtained on the previous charge. (vented)

-2.33 v for two hours (sealed)

Front 41

How often should batteries be checked for boost charge?

Back 41

every 90 days (batteries on float charge or their own chargers)

every 30 days (all other)

Front 42

When should a boost charge be given?

Back 42

If a cell is more than .010 different from other cells or if the voltage is .015 below normal (vented)

Any cell falls below 2.10v (sealed)

Front 43

When is a boost charge complete?

Back 43

When there is no increase is specific battery per cell after four hours

Front 44

What is the specific gravity of a liquid?

Back 44

the ratio of the weight of a certain volume of liquid to the weight of the same volume of water

vol liquid/vol water

Front 45

To adjust specific gravity for temperature, add ______ point to the reading for each ________F above 80F

Back 45

1 point, 3 degrees