Overhead Crane Session

Overhead Crane Overhead Crane General Use & Inspection CriteriaGeneral Use & Inspection Criteria

The Selection Process For Both Overhead Cranes & Underhung Hoists, Should Not Be Taken Lightly.

A Significant Amount Of Pre-planning Is Needed To Place The Proper Crane Or Hoist Into The Proper Environment.

The Key To Equipment Longevity Is Complete And Through Inspections

Different Equipment TypesDifferent Equipment Types

Overhead Cranes Gantry, Semi-gantry,

Bridge, Cantilever etc Underhung Hoist

Monorail, Underhung Bridge, Wall jib, Floor jib, etc

Electric, Air (pneumatic), Manual powered

Duty Cycle ClassesDuty Cycle Classes

There Differences Between Overhead and Underhung Crane Classifications

Duty Cycles - Overhead CranesDuty Cycles - Overhead Cranes

CMAA spec 70 ASME B30.2

Duty Cycles - Overhead CranesDuty Cycles - Overhead Cranes

There are six Service Class designations for the Overhead Cranes based on their Load Class and Load Cycles. Class A F

Class A Standby or Infrequent Service Class B Light Service Class C Moderate Usage Class D Heavy Service Class E Severe Service Class F Continuous Severe Usage

Duty Cycles - Underhung HoistsDuty Cycles - Underhung Hoists

CMAA spec 74 ASME B30.16

Duty Cycles Underhung HoistsDuty Cycles Underhung Hoists

There are four Service Class designations for the Overhead Cranes based on there Load Class and Load Cycles. Class A D

Class A Standby or Infrequent Service Class B Light Service Class C Moderate Usage Class D Heavy Service

Duty Cycle & Maintenance CostDuty Cycle & Maintenance Cost

Placing Class B Crane Into A Class C Environment is Tantamount to .

Flushing Your Maintenance Dollars Down The Toilet!

Overhead Crane InspectionsOverhead Crane Inspections

There Are Two Reasons For The Correct And Timely Performance Of Inspections, And Testing On Overhead Cranes.

9


Humanitarian Decrease The Probability

For Equipment Failures That Result In Personnel Injuries/Death.

Provide A Safer Working Environment For All Workers.

10


Economic Increased

Productivity. Decrease Repair &

Replacement Cost.

11

LOCKOUT/TAGOUTLOCKOUT/TAGOUT

29 CFR 1910.147 Procedures

Designed To Save Lives And Prevent Injuries Prior To Maintenance And Inspection Procedures

12

TYPES OF STANDARDSTYPES OF STANDARDS

Regulatory Standards Federal OSHA State OSHA

Must Be At Least As Effective As Federal OSHA

25 States & Two Territories

13


Regulatory Standards (cont.) Local Requirements Employer Practices Manufacturer

Specifications/ Recommendations

14


Consensus Standards ASME (American Society of

Mechanical) CMAA (Crane Manufacturers

Association of America) NEC (National Electric Code)

15

INSPECTION REQUIREMENTSINSPECTION REQUIREMENTS

Federal - General Industry Initial (29 CFR 1910.179 (j)

(1)) Regular (29 CFR 1910.179

(j) (2)) Frequent: 29 CFR

1910.179 (j) (2) and ASME B30.2

Periodic: 29 CFR 1910.179 (j) (3) and ASME B30.2

16


Federal Construction Permanently Installed Cranes Exempted

1926.1438

17


Federal Construction Non-Permanently Installed Overhead

Cranes Used in Construction Must comply with the following: Modified Equipment (1926.1412 (a)) Repaired/Adjusted Equipment (1926.1412 (b)) Post-assembly (1926.1412 (c)) Each Shift (1926.1412 (d)) Monthly (1926.1412 (e)) Annual/Comprehensive (1926.1412 (f)) Severe Service (1926.1412 (g)) Equipment Not In Regular Use (1926.1412 (h))

18

INSPECTION PROCESSINSPECTION PROCESS

Inspections may be broken down into systems, i.e. Mechanical

Brakes (not including the actuators) Brake lining Gear Box(s) Drive (End) Trucks Drive Shafts, etc.

Structural Runway Rails Bridge Girders, etc.

19


Inspections may be broken down into systems, i.e. Electrical

Motors Controllers Brake actuators Buss Bars Electrical Cabinets, etc.

Hydraulic/Pneumatic Brake Actuators Master Cylinder, etc.

20


21

Drive Wheel, Gearbox & Driveshaft

Mec

hani

cal I

nspe

ctio

nM

echa

nica

l Ins

pect

ion


22

Brake Lining, Drums & Components

Mec

hani

cal I

nspe

ctio

nM

echa

nica

l Ins

pect

ion


23

Catwalk & Driveshaft Alignment & Mounting

Mec

hani

cal I

nspe

ctio

nM

echa

nica

l Ins

pect

ion


24

Gear Box Inspection

Mec

hani

cal I

nspe

ctio

nM

echa

nica

l Ins

pect

ion


25

Runway & Rails

Stru

ctur

al In

spec

tion

Stru

ctur

al In

spec

tion


26

Support Column Alignment & Missing Hardware

Stru

ctur

al In

spec

tion

Stru

ctur

al In

spec

tion


27

Bumpers & End Stops

Stru

ctur

al In

spec

tion

Stru

ctur

al In

spec

tion


28

Confirm Square of Bumpers &Rails

Stru

ctur

al In

spec

tion

Stru

ctur

al In

spec

tion


29

Wiring and Wire Terminations

Elec

tric

al In

spec

tion

Elec

tric

al In

spec

tion


30

Hoist Motor

Elec

tric

al In

spec

tion

Elec

tric

al In

spec

tion


31

Collectors & Conductors

Elec

tric

al In

spec

tion

Elec

tric

al In

spec

tion


32

Hydraulic Brake for Leakage

Hyd

raul

ic/P

neum

atic

H

ydra

ulic

/Pne

umat

ic

Insp

ectio

nIn

spec

tion

REQUIREMENTS FORREQUIREMENTS FORLOAD TESTINGLOAD TESTING

Operational Tests and Rated Load Tests: Initial Installation (NEW) After Alterations, Repairs Or Modifications 29 CFR 1910.179 (K) (1) ASME B30.2-2.1 And 2-2.2.2 Some State OSHAs Require Load Testing

33

DOCUMENTATIONDOCUMENTATION

Required Annual Monthly On

Critical Items And Running Rope

34


Recommended Documentation And Retention Time Daily (Current And Previous Month) Weekly (Latest Plus Previous 4) Monthly/Quarterly (Latest Plus Previous

Year) Semi-annual/Annual (Latest Plus Previous

Year) Others (Latest Plus Previous Year)

35


Required Documentation And Retention Time Per 29 CFR 1926 Subpart CC

Monthly (29 CFR 1926.1412 (e)(3) (document must be retained for a minimum of three months)

Annual (29 CFR 1926.1412 (f)(7) (document must be maintained and retained for a minimum of 12 months)

36

Maintains A Complete Inspection, Maintenance, And Testing History Of The Equipment.

Allows End User To Establish Life Cycle Cost.

Assist In Establishing Trend Analysis.

37



Can Establish Requirements For On-hand Spare Parts To Decrease Replacement Lead Time

Provides Statistical Data To Predict Mean Time Between Failure (MTBF)

Provides Statistical Data To Predict Mean Time To Repair (MTTR)

To Defend Against Liability

38

STORAGE OF DOCUMENTATION STORAGE OF DOCUMENTATION

Documents should be stored in a place where they are readily available. All workers, most importantly the operator, should know where these papers are.

39

SUMMARYSUMMARY

The Inspection And Testing Of Overhead Cranes And Hoists Is Crucial To Safe Workplace Conditions.

Any Kind Of Equipment Begins Depreciating After Its First Use.

A Defect In Equipment Can Bring A Quick End To The Day, In A Best-case Scenario.

40

Overhead Crane General Use & Inspection CriteriaDifferent Equipment TypesDuty Cycle ClassesDuty Cycles - Overhead CranesSlide 5Duty Cycles - Underhung HoistsDuty Cycles Underhung HoistsDuty Cycle & Maintenance CostOverhead Crane InspectionsSlide 10Slide 11LOCKOUT/TAGOUTTYPES OF STANDARDSSlide 14Slide 15INSPECTION REQUIREMENTSSlide 17Slide 18INSPECTION PROCESSSlide 20Slide 21Slide 22Slide 23Slide 24Slide 25Slide 26Slide 27Slide 28Slide 29Slide 30Slide 31Slide 32REQUIREMENTS FOR LOAD TESTINGDOCUMENTATIONSlide 35Slide 36Slide 37Slide 38STORAGE OF DOCUMENTATIONSUMMARY

Overhead Crane Session

Documents

Transcript of Overhead Crane Session