Transcript
Page 1: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 1

of

14

TA

SK

AN

AL

YS

IS W

OR

KS

HE

ET

Co

mp

an

y:

T

he

Co

rpo

rati

on

of

De

lta

D

ep

art

me

nt:

En

gin

ee

rin

g O

pe

rati

on

s

J

ob

Tit

le:

F

loo

d B

ox

Te

ch

nic

ian

s

Da

te:

Ma

y 8

, 2

003

& J

un

e 2

5, 2

003

Jo

b S

um

mary

: T

he F

lood B

ox T

echnic

ians’ ta

sks a

nd d

uties a

re r

ela

ted t

o m

ain

tenance a

nd c

onstr

uction o

f m

unic

ipal utilit

ies, ro

ads, dykes a

nd

dra

inag

e s

yste

ms. P

rim

ary

tasks involv

e c

leanin

g d

ebris a

t pum

p s

tations a

nd d

rain

s, as w

ell

as g

rass-c

utt

ing

. S

econdary

tasks

inclu

de d

rivin

g f

rom

one s

ite t

o a

noth

er

(25%

of th

e s

hift)

.

Job t

asks a

re s

hare

d b

etw

een t

he t

wo c

rew

mem

bers

(som

etim

es 3

cre

w m

em

bers

). A

routine a

nd p

attern

has d

evelo

ped, and the

work

pro

ceeds e

ffic

iently. T

asks that in

volv

e m

anual la

bour,

i.e

. m

ajo

r cle

an-u

ps (

heavy d

ebris s

uch a

s log

s)

and c

utt

ing

gra

ss, are

perf

orm

ed o

n M

onday,

Wednesday a

nd F

riday. M

inor

cle

an-u

ps a

re p

erf

orm

ed o

n T

uesday a

nd T

hurs

day.

Pers

onal pro

tective

eq

uip

ment

inclu

de: safe

ty b

oots

and c

overa

lls. W

hen u

sin

g w

eed-e

ate

rs, th

e c

rew

mem

bers

are

req

uired t

o w

ear

a h

ard

hat,

hearing p

rote

ction a

nd r

ubber

boots

(if it’s r

ain

ing

).

The F

lood B

ox T

echnic

ians’ com

pla

ined a

bout th

e u

se o

f one t

ype o

f w

eed e

ate

rs (

or

str

ing

lin

e c

utters

), i.e

. S

TIH

L F

5 5

50 (

due t

o

the h

eavie

r w

eig

ht and s

hort

er

shaft).

Fro

m M

ay t

o S

epte

mber

(~3.5

month

s),

the c

rew

mem

bers

spend a

bout 4 –

5 h

ours

of th

e

shift

on w

eed c

uttin

g.

N

.B: T

his

assessm

ent w

as b

ased o

n a

work

ing

popula

tion o

f m

ale

s o

nly

.

Page 2: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 2

of

14

T

asks &

Descri

pti

on

of

Ac

tivit

ies

Fre

qu

en

cy

Du

rati

on

1.

Cle

an

ing

deb

ris

Check r

outines locations f

or

debris (

depth

of

36”)

.

Cle

an u

sin

g r

ake.

Pull

up d

ebris u

sin

g r

ake +

fork

. If e

xcessiv

e,

put aw

ay d

ebris in

dum

p tru

ck.

When it ra

ins, th

ere

’s m

ore

debris.

A

erial vie

w o

f dra

in (

aft

er

rem

oval of

debris)

20-4

0 locations

per

day

(3

4-6

6 %

of shift)

30 s

ec –

4

hours

per

location

2.

Po

sit

ion

ply

wo

od

at

dra

ins

Take 2

x6 +

4x8 (

½ “

) ply

wood s

heets

fro

m W

ork

syard

. �

Cla

mp h

ois

t hooks (

on H

iab –

cra

ne tru

ck)

to b

aff

les.

Once b

aff

les a

re lifte

d o

ff,

deta

ch h

ooks fro

m c

rane.

Take m

easure

ments

of

dra

inag

e a

rea (

i.e.

where

baff

le is locate

d).

Usin

g p

ull

fork

, m

easure

depth

of

wate

r.

Rem

ove t

ailg

ate

fro

m tru

ck t

o g

ain

access to p

lyw

ood s

heets

.

Rem

ove p

lyw

ood s

heets

fro

m tru

ck.

Cut

ply

wood s

heets

to s

ize.

Nail

sm

alle

r pie

ces o

f w

ood t

o p

lyw

ood s

heets

.

Bend n

ails

.

Dra

g p

lyw

ood (

with a

ttached p

ieces o

f w

ood)

dow

n r

am

p.

Positio

n p

lyw

ood a

t dra

in.

Usin

g s

hort

er

pull

fork

, push p

lyw

ood d

ow

nw

ard

. �

Positio

n w

edg

es –

push w

edg

es d

ow

nw

ard

usin

g s

ledg

e h

am

mer.

not

perf

orm

ed

daily

(6-3

3%

of

shift)

varies

(u

p to 2

hours

)

Page 3: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 3

of

14

T

asks &

Descri

pti

on

of

Ac

tivit

ies

Fre

qu

en

cy

Du

rati

on

P

osit

ion

ply

wo

od

at

dra

ins …

co

nti

nu

ed

2 x

6 p

ieces o

f w

ood L

ocation to p

ositio

n p

lyw

ood

C

uttin

g t

he p

lyw

ood s

heet

to s

ize

not

perf

orm

ed

daily

(6-3

3%

of

shift)

varies

(u

p to 2

hours

)

3.

Weed

Cu

ttin

g

Tw

o t

ypes o

f w

eed e

ate

rs (

or

str

ing lin

e c

utters

) are

used:

1.

ST

IHL F

5 5

50

-

more

pow

er,

burn

s g

as faste

r (a

s p

er

cre

w m

em

bers

) -

w

eig

ht 11.4

kg

(w

ith g

as)

-

short

er

shaft (

tota

l le

ngth

– 1

80 c

m, dis

tance t

o c

ente

r of g

ravity –

56 c

m)

2.

Kaw

asaki K

BL 3

A4

-

we

ight 7.3

kg

(w

ith g

as)

-

long

er

shaft

(to

tal le

ng

th –

187 c

m, dis

tance to c

ente

r of g

ravity –

60 c

m)

ST

IHL F

5 5

50 K

aw

asaki K

BL 3

A4

34-6

6%

of

shift

(Ma

y –

Sept.

only

)

4-5

hours

Page 4: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 4

of

14

T

asks &

Descri

pti

on

of

Ac

tivit

ies

Fre

qu

en

cy

Du

rati

on

W

eed

cu

ttin

g …

co

nti

nu

ed

N

ote

: B

oth

weed-e

ate

rs a

re h

ooked o

nto

bro

ad-s

trapped s

uspenders

at th

e h

ip-j

oin

t during

use. T

his

allo

ws t

he m

uscle

s in t

he u

pper

back a

nd s

hould

ers

to b

ear

som

e o

f th

e w

eig

ht

of

the w

eed-e

ate

r.

U

sin

g w

eed-e

ate

r -

ST

IHL F

5 5

50

Usin

g w

eed-e

ate

r – K

aw

asaki

34-6

6%

of

shift

(Ma

y –

Sept.

only

)

4-5

hours

4.

Use o

f T

oo

ls

Tools

:

R

ake (

149 c

m long

)

Pull

fork

(267 c

m o

r 386 c

m)

P

itch f

ork

(152 c

m long)

varies

varies

Page 5: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 5

of

14

T

asks &

Descri

pti

on

of

Ac

tivit

ies

Fre

qu

en

cy

Du

rati

on

U

se o

f T

oo

ls ... c

on

tin

ued

R

ound-e

nd S

hovel (1

52 c

m long

) F

lat-

end S

hovel (1

68 c

m)

P

ipe p

ole

(381 c

m long

)

S

ledg

e H

am

mer

(79 c

m)

Cre

scent W

rench (

15”

Westw

ard

AW

15)

P

ipe W

rench (

18”

Rid

gid

) S

aw

(S

andvik

)

Sw

ed S

aw

(S

andvik

Forc

e –

24”

607 m

m)

varies

varies

Page 6: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 6

of

14

T

asks &

Descri

pti

on

of

Ac

tivit

ies

Fre

qu

en

cy

Du

rati

on

U

se o

f T

oo

ls …

co

nti

nu

ed

W

heel / K

ey (

Arm

tec)

S

top / S

low

Sig

n

varies

varies

Page 7: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 7

of

14

Ris

k F

acto

rs c

on

sid

ere

d:

Join

t postu

re: w

rist,

elb

ow

, should

er,

neck, back, knees

Aw

kw

ard

postu

re: r

each, tw

ist,

bend, sto

op, sq

uat, c

limb, sta

tic, dynam

ic

Forc

e: lift, low

er,

carr

y, push/p

ull,

pin

ch o

r pow

er

grip

Repetition: fr

eq

uency,

dura

tion

Conta

ct S

tress

Obje

ct w

eig

ht, location, siz

e,

shape,

handle

s,

sta

bili

ty o

f lo

ad

Work

heig

ht, layout,

seating

, space

Tool/eq

uip

ment use

Environm

ent:

la

yout,

flo

oring, te

mpera

ture

, nois

e,

light, g

lare

, vib

ration

Work

Org

aniz

ation:

recovery

, schedule

, w

ork

load, ta

sk v

ariabili

ty,

pace, P

PE

use,

inte

rruptions

P

ostu

res, W

CB

of B

C

Page 8: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 8

of

14

Dep

art

men

t/W

ork

Are

a:

Eng

ineering

– E

lectr

ical / M

echanic

al

Occu

pati

on

: F

lood B

ox

Technic

ians –

Laboure

r II

S

pecif

ic L

ocati

on

: D

elta (

assort

ed)

C

on

tact

Nam

e:

A

ssessed

By:

F.

Ism

ail

A

ssessm

en

t D

ate

: M

ay 8

, 2003 &

June 2

5,

2003

Descri

pti

on

of

wo

rk a

rea:

Outd

oor

roadsid

e u

rban a

nd industr

ial park

location.

H

ou

rs o

f W

ork

/Sh

ift

Sch

ed

ule

: 7

:00 a

.m. to

3:3

0 p

.m.

MS

I sig

ns / s

ym

pto

ms n

ote

d:

back, should

er

Tasks f

or

Erg

on

om

ics R

isk A

ssessm

en

t (f

rom

Task A

naly

sis

wo

rksh

eet)

: F

req

uen

cy /

Du

rati

on

of

Task:

1.

Cle

anin

g d

ebris

2.

Positio

n p

lyw

ood

at

dra

ins

3.

Weed c

uttin

g (

Ma

y –

Se

pt. o

nly

) 4.

Use o

f T

ools

20 –

40 locations /

da

y

vari

es (

not

daily

) 4 –

5 h

ours

vari

es

34-6

6%

of

shift

6-3

3%

of

shift

34-6

6%

of

shift

vari

es

T

ask

Ris

k F

acto

rs

Fre

q/D

ur

Mag

/Ran

ge

A

sse

ssm

en

t/O

bs

erv

ati

on

s/C

om

men

ts

Aw

kw

ard

P

ostu

re:

Back f

lexio

n

Sho

uld

er

flexio

n

Sho

uld

er

abduction

/ adduction

Elb

ow

pro

natio

n

Back late

ral

flexio

n

Dura

tion

vari

es:

30 s

ec –

4

hour

per

location

34-6

6%

of

shift

Dyn

am

ic (

<30 s

ec.)

Back f

lexio

n u

p t

o

45º

Elb

ow

pro

nate

d

Sho

uld

er

flexio

n 3

Sho

uld

er

ab

duction

up to

11

Sho

uld

er

ad

duction

Back late

ral flexio

n

up to

20

º

While

cle

anin

g d

ebris,

assum

es the f

ollo

win

g p

ostu

res:

back

flexio

n 4

5º,

back late

ral flexio

n 2

0º,

sho

uld

er

flexio

n 3

/ abduction

up t

o 1

10

º/ a

ddu

ction a

nd p

ron

ate

d e

lbo

w.

The d

ynam

ic n

atu

re a

nd f

requency a

nd d

ura

tion o

f th

e t

asks

do n

ot excee

d e

rgonom

ic g

uid

elin

es f

or

aw

kw

ard

postu

res

(WC

B W

ork

sheet B

). A

ble

to p

ause a

nd c

ha

nge

positio

n a

s

require

d.

1.

Cle

an

ing

D

eb

ris

Forc

e:

Pulli

ng

debris o

ut

of

dra

in

as a

bo

ve

F

orc

e to p

ull

up

de

bris

– 3

kg

Tw

o-h

an

ded lifting (

pull-

up)

of

debris –

3 k

g.

Pull

up f

orc

e to lift de

bris is a

ccepta

ble

(K

od

ak, 1986).

Identification

R

epetition:

Perf

orm

s a

vari

ety

of

movem

ents

as a

bo

ve

Assessment

Not consid

ere

d r

ep

etitive w

ork

. �

The f

requency a

nd d

ura

tion

of

the tasks d

oes n

ot

exceed

erg

on

om

ic g

uid

elin

es f

or

repetitio

n (

WC

B W

ork

sheet B

).

Page 9: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 9

of

14

T

ask

Ris

k F

acto

rs

Fre

q/D

ur

Mag

/Ran

ge

A

sse

ssm

en

t/O

bs

erv

ati

on

s/C

om

men

ts

Aw

kw

ard

P

ostu

re:

Back f

lexio

n

Squ

attin

g

Kne

elin

g

Elb

ow

exte

nsio

n

Clim

bin

g

Cra

wlin

g

Sho

uld

er

flexio

n

Back tw

isting

up to

2 h

r dura

tion

6-3

3%

of

shift

(not da

ily)

Sta

tic (

>3

0 s

ec.)

Back f

lexio

n 8

Sho

uld

er

flexio

n 7

Elb

ow

exte

nd

ed

Kne

elin

g

Squ

attin

g

Dyn

am

ic

Sho

uld

er

flexio

n u

p

to 9

Squ

attin

g

Kne

elin

g

Elb

ow

exte

nsio

n

Clim

bin

g

Cra

wlin

g

Back f

lexio

n u

p t

o

90º

Back tw

ist

Dyn

am

ic s

quattin

g, b

ack fle

xio

n u

p to

90

º a

nd s

ho

uld

er

flexio

n 9

to c

lam

p h

ois

t h

ooks o

nto

baff

le.

Dyn

am

ic s

quattin

g, kneelin

g, shou

lder

flexio

n 9

and e

lbo

w

exte

nsio

n to

take m

easure

ments

at lo

cation o

f baff

le.

Clim

bin

g u

p a

nd d

ow

n r

ails

Kne

elin

g a

nd c

raw

ling

wh

ile m

ark

ing m

easure

ments

on

ply

woo

d s

he

et

Sta

tic b

ack f

lexio

n 8

or

knee

ling w

hile

cutt

ing p

lyw

ood

sheet (w

hen p

lace

d o

n f

loo

r) –

occasio

na

lly s

light b

ack tw

ist

Sta

tic left

sho

uld

er

flexio

n 7

and e

lbo

w e

xte

nsio

n +

rig

ht

should

er

flexio

n 0

-45º

and e

lbo

w e

xte

nsio

n 9

0-1

80

º w

hile

cuttin

g p

lyw

ood

sheet

(whe

n s

tand

ing u

pri

gh

t)

Sta

tic k

neelin

g o

r squatt

ing

while

naili

ng s

malle

r p

iece

s o

f w

ood t

o p

lyw

oo

d s

he

ets

Dyn

am

ic b

ack f

lexio

n 4

5 –

90º

to b

end

na

ils.

The f

requency a

nd d

ura

tion

of

the tasks d

oes n

ot

exceed

erg

on

om

ic g

uid

elin

es f

or

aw

kw

ard

postu

res (

WC

B W

ork

sheet

B).

A

ble

to p

ause

an

d c

ha

nge p

ositio

n a

s r

eq

uire

d.

Identification

2.

Po

sit

ion

p

lyw

oo

d

at

dra

ins

Forc

e:

Lifting

ply

woo

d

Lifting

ta

ilgate

Dra

g p

lyw

oo

d

do

wn r

am

p

up to

2 h

r dura

tion

6-3

3%

of

shift

(not da

ily)

Wt of

1 s

heet

of

ply

woo

d ~

6.8

– 9

kg

(could

not b

e

weig

hed)

Wt of

tailg

ate

(fr

om

tr

uck)

– 2

3 k

g

Pull

forc

e o

n p

lyw

ood

do

wn r

am

p 9

kg

Assessment

Lifting

sheets

of

ply

woo

d a

t W

ork

sya

rd ~

6.8

– 9

kg. T

wo

pers

on 2

-hand

ed lifting.

1)

Lift of

shelf 6

6 c

m to k

nuckle

heig

ht. 2

) T

here

aft

er,

to p

lace in d

um

p tru

ck, lif

t fr

om

knuckle

heig

ht to

16

0 c

m.

Lifting

ta

ilgate

off

tru

ck (

wt. –

23 k

g)

– f

rom

heig

ht of

13

7 c

m

to k

nuckle

he

ight.

Min

imal re

aches.

Rem

ove p

lyw

ood s

heets

off

tru

ck (

wt. ~

6.8

-9 k

g)

– h

eig

ht of

135 c

m (

2-p

ers

on).

Dra

g p

lyw

oo

d d

ow

n r

am

p (

forc

e –

9 k

g).

Lifting

the

ply

wo

od (

2-p

ers

on lift)

is w

ithin

erg

onom

ic

guid

elin

es (

Mital et a

l.,

199

3).

Liftin

g th

e ta

ilgate

off

the tru

ck is

with

in e

rgon

om

ic g

uid

elin

es –

due

to m

inim

al re

ach a

nd lo

w

frequency r

ate

(W

CB

Work

sheet

B).

Pulli

ng t

he p

lyw

ood d

ow

n

the r

am

p is w

ithin

erg

onom

ic g

uid

elin

es (

Mita

l et a

l., 1

993).

Page 10: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 1

0 o

f 14

T

ask

Ris

k F

acto

rs

Fre

q/D

ur

Mag

/Ran

ge

A

sse

ssm

en

t/O

bs

erv

ati

on

s/C

om

men

ts

Aw

kw

ard

P

ostu

re:

Back tw

isting

4 –

5

hours

34 –

66%

of

shift

Dyn

am

ic

Back tw

isting

Back tw

isting w

hile

wee

d c

uttin

g,

i.e.

not

turn

ing f

ee

t.

The f

requency a

nd d

ura

tion

of

the tasks d

oes n

ot

exceed

erg

on

om

ic g

uid

elin

es f

or

aw

kw

ard

postu

res. A

ble

to p

ause

and c

hang

e p

ositio

n a

s r

eq

uired.

Forc

e

Grip f

orc

e

Conta

ct str

ess

on lo

wer

back

Weig

ht of

weed-e

ate

rs

4 –

5

hours

34 –

66%

of

shift

Po

wer

grip

on w

ee

d

eate

r h

an

dle

s

Weig

ht of

weed-

eate

rs –

7.3

– 1

1.4

kg

Cre

w m

em

bers

com

pla

ined

that

with th

e S

TIH

L w

eed-

eate

r, d

ue t

o t

he s

hort

er

sh

aft

, th

e m

oto

r hits t

heir lo

wer

back d

uring o

pera

tio

n.

The s

uspenders

supp

ort

th

e w

eig

ht

of

the w

eed-e

ate

rs

durin

g o

pera

tion a

t th

e h

ip h

eig

ht.

The d

ynam

ic n

atu

re a

nd f

requency a

nd d

ura

tion o

f th

e t

ask d

o

not

ind

icate

this

as h

igh r

isk for

grip f

orc

e. N

o g

uid

elin

es

ava

ilab

le f

or

concern

re

gard

ing m

oto

r on S

TIH

L h

itting

lo

wer

back. N

o e

rgon

om

ic g

uid

elin

es a

va

ilab

le r

egard

ing m

axim

um

w

eig

ht th

at

back c

an s

uppo

rt.

As p

er

PJD

A,

perf

orm

ed b

y H

um

an E

ffort

, (G

reate

r V

ancouver

– P

ark

s M

ain

ten

ance),

" c

hain

sa

w,

we

ed e

ate

r and

oth

er

po

wer

too

ls w

ill incre

ase t

he v

ibra

tio

n a

nd c

om

pre

ssiv

e f

orc

es

from

the g

rip to

the

elb

ow

and s

ho

uld

er

that m

ay

lead t

o

overu

se

ten

do

n o

r n

erv

e inju

ries. Im

pin

gem

ent and

inflam

mato

ry inju

ries to th

e s

hould

ers

are

lik

ely

du

e to t

he

pro

longe

d s

tatic a

rm p

ositio

n (

flexed a

nd a

bducte

d s

ho

uld

er

and e

lbo

w)

req

uire

d d

uri

ng

som

e w

ork

."

Identification

3.

Weed

C

utt

ing

Repetition:

Perf

orm

s a

vari

ety

of

movem

ents

4 –

5

hours

34 –

66%

of

shift

Assessment

Not consid

ere

d r

ep

etitive w

ork

.

The f

requency a

nd d

ura

tion

of

the tasks d

oes n

ot

exceed

erg

on

om

ic g

uid

elin

es f

or

repetitio

n (

WC

B W

ork

sheet B

).

Page 11: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 1

1 o

f 14

T

ask

Ris

k F

acto

rs

Fre

q/D

ur

Mag

/Ran

ge

A

sse

ssm

en

t/O

bs

erv

ati

on

s/C

om

men

ts

4.

Use o

f T

oo

ls

Forc

e:

Lifting

assort

ed

tools

Dura

tion

vari

es

Fre

quency

vari

es

Weig

hts

range f

rom

<

1 –

4 k

g.

The tools

we

igh a

s f

ollo

ws:

rake –

1.1

kg, pull

fork

(267 c

m)

– 2

.5 k

g, pull

fork

(386 c

m)

– 2

.3 k

g, pitch f

ork

– 1

.4 k

g,

round-e

nd s

ho

ve

l – 2

.5 k

g, flat-

end s

ho

vel – 3

kg, pip

e p

ole

– 2

kg, bro

om

– 1

.4 k

g, sle

dge h

am

mer

– 4

kg, cla

w

ham

mer

- <

1kg, cre

scent w

rench –

1.4

kg, p

ipe w

ren

ch –

2.5

kg, sa

ws -

< 1

kg,

wh

ee

l / ke

y – 3

.9 k

g, sto

p / s

low

sig

n -

<

1 k

g

The lifts

are

within

recom

mende

d w

eig

ht lim

its f

or

liftin

g tasks

(WC

B W

ork

sheet B

).

Page 12: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 1

2 o

f 14

SU

MM

AR

Y

The r

isk identification a

nd a

ssessm

ent fo

r th

e F

lood B

ox T

echnic

ian’s

job tasks h

ave identified s

om

e r

isk f

acto

rs t

hat exceed

recom

mended g

uid

elin

es. W

hile

these tasks h

ave b

een a

ssessed indiv

idually

, cum

ula

tive e

ffects

of

com

bin

ed tasks m

ay incre

ase

the level of

risk.

With

reg

ard

s t

o the f

lood b

ox t

echnic

ians’ jo

b, in

genera

l th

e r

isk f

acto

rs a

re r

ela

ted to v

ibra

tion c

oncern

s a

nd c

onta

ct str

ess.

N

ew

cre

w m

em

bers

who

have n

ot

acclim

atized t

o t

he p

hysic

al dem

ands o

f w

ork

may b

e a

t an incre

ased r

isk o

f in

jury

. A

ll cre

w

mem

bers

are

at a h

igher

risk o

f in

jury

in the m

orn

ing h

ours

when t

hey m

ay n

ot be p

hysic

ally

pre

pare

d o

r w

arm

ed u

p p

rior

to

perf

orm

ing

physic

ally

dem

andin

g w

ork

. T

his

was d

em

onstr

ate

d in t

he C

orp

ora

tion o

f D

elta’s

musculo

skele

tal in

jury

(M

SI)

analy

ses

(2001)

report

where

55%

of

MS

I W

CB

cla

ims o

ccurr

ed in t

he A

M.

Additio

nally

, w

hile

not

exceedin

g g

uid

elin

es for

the indiv

idua

l ta

sks, cum

ula

tive e

ffects

of

aw

kw

ard

postu

res o

f th

e n

eck, back,

should

er

and a

rm/w

rist m

ay incre

ase the r

isk o

f in

jury

(>

66%

of shift w

hen a

ll activitie

s o

r ta

sks a

re c

om

bin

ed).

Page 13: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 1

3 o

f 14

CO

NT

RO

LS

R

ecom

mendations for

contr

ol of

identified r

isk f

acto

rs w

ill f

ocus o

n m

eth

ods t

o m

inim

ize r

isk.

*Contr

ol P

riori

ty N

ote

: 1

= r

ecom

mend

ed f

or

imple

me

nta

tion t

o r

educe r

isk facto

rs; 2 =

optio

na

l, for

co

nsid

era

tion

as a

mea

ns o

f re

ducin

g r

isk

facto

rs; 3 =

no

t fo

r im

med

iate

action b

ut fo

r fu

ture

consid

era

tio

n a

s a

ppro

priate

.

Ris

k F

acto

r R

eco

mm

en

ded

Co

ntr

ols

C

on

tro

l P

rio

rity

* R

esp

on

sib

le

Pers

on

S

tatu

s

End

ura

nce f

or

ph

ysic

ally

dem

andin

g w

ork

Main

tain

an incre

ased

le

ve

l of

fitn

ess f

ocusin

g o

n c

ard

iovascu

lar

and m

uscula

r end

ura

nce a

nd m

uscula

r flexib

ility

. T

his

is e

specia

lly

import

ant fo

r ne

w w

ork

ers

who m

ay n

ot

be a

cclim

atized to

the

dem

ands o

f w

ork

.

2

Em

plo

ye

e

Pre

para

tion f

or

all

ph

ysic

ally

dem

andin

g w

ork

Develo

p a

ph

ysic

al w

arm

up p

rogra

m a

nd tra

in w

ork

ers

specific

to

the d

em

ands o

f th

e job. W

ork

ers

should

perf

orm

this

warm

up p

rior

to th

e s

tart

of

the

da

y a

nd b

efo

re r

esum

ing w

ork

follo

win

g >

30 m

in.

bre

aks. T

he d

ura

tio

n o

f th

e w

arm

up is less tha

n 1

0 m

in. M

icro

str

etc

hes s

hou

ld a

lso b

e p

erf

orm

ed follo

win

g s

tatic, a

wkw

ard

postu

res e

.g. n

eck a

nd b

ack b

endin

g.

2

Sup

erinte

nd

ent

/Dept.

Aw

kw

ard

and

Sta

tic P

ostu

res

Consid

er

job r

ota

tion b

etw

een c

rew

mem

bers

to p

rovid

e a

dis

trib

ution o

f w

ork

load

an

d d

ecre

ase t

he c

um

ula

tive e

ffects

of

the

com

bin

ed

tasks.

Durin

g w

eed c

utt

ing, cre

w m

em

bers

are

encoura

ged t

o a

void

tw

isting,

i.e.

to t

urn

th

eir f

ee

t in

the d

irection o

f th

e t

urn

.

1 1

Sup

erinte

nd

ent

E

mplo

ye

e

Forc

e:

Tools

and

equ

ipm

ent

Ensure

all

tools

and e

qu

ipm

ent are

in g

ood

shap

e a

nd r

epa

ir. S

tatic

forc

es w

ill incre

ase if

tools

and e

qu

ipm

ent re

qu

ire m

ore

work

or

repetitio

n o

f w

ork

due to

po

or

main

tenance

inclu

din

g c

lean

ing.

Evalu

ate

too

ls a

nd e

quip

ment

when b

ein

g r

epla

ced t

o e

nsure

the

weig

ht a

nd d

esig

n (

e.g

. gri

p)

will

re

duce t

he w

ork

load (

e.g

. w

renches,

va

lve k

ey e

tc.)

.

1 3

Sup

erinte

nd

ent

Em

plo

ye

e

S

up

erinte

nd

ent

Em

plo

ye

e

Page 14: Page 1 of 14 - BC Municipal Safety Association Ergonomic Assessments/L… · WWC WorkWell Consulting Ergonomic Risk Identificat ion & Assessment Page 1 of 14 TASK ANALYSIS WORKSHEET

WWC

Wo

rkW

ell C

on

su

ltin

g

Erg

on

om

ic R

isk Id

en

tifi

cati

on

& A

ssessm

en

t

Pag

e 1

4 o

f 14

R

isk F

acto

r R

eco

mm

en

ded

Co

ntr

ols

C

on

tro

l P

rio

rity

* R

esp

on

sib

le

Pers

on

S

tatu

s

Conta

ct str

ess

caused b

y u

sin

g

the S

TIH

L w

ee

d-

eate

r

Due t

o th

e p

ossib

ility

of

con

tact str

ess o

n th

e lo

wer

back c

aused b

y

the S

TIH

L w

ee

d-e

ate

r (d

ue

to th

e s

hort

er

sh

aft

len

gth

), it is

re

com

mended th

at:

1.

Cre

w m

em

bers

use the K

aw

asaki w

eed-e

ate

r if a

va

ilable

and t

o o

nly

use t

he S

TIH

L w

eed-e

ate

r if the K

aw

asaki

weed-e

ate

r is

not

availa

ble

(e.g

. if th

e v

olu

me o

f w

ork

re

quires b

oth

cre

w m

em

bers

to c

ut

we

eds –

in w

hic

h c

ase,

one w

ill u

se

the

Ka

wasaki and t

he o

ther

will

ha

ve t

o u

se the

ST

IHL).

2.

If terr

ain

has f

lat gro

und a

nd s

mall

hill

s, th

e c

rew

mem

ber

cuttin

g w

eeds o

n the

fla

t gro

und

shou

ld u

se th

e S

TIH

L

weed-e

ate

r a

nd t

he c

rew

mem

ber

cuttin

g w

eed o

n t

he s

mall

hill

s s

hou

ld u

se th

e K

aw

asaki w

eed-e

ate

r.

3.

Investig

ate

the f

easib

ility

of

movin

g th

e h

and

le b

ars

aw

ay

from

the m

oto

r th

ere

by incre

asin

g th

e s

haft

dis

tance

betw

een t

he m

oto

r and

ha

ndle

bars

.

4.

Cre

w m

em

bers

should

altern

ate

usin

g th

e S

TIH

L w

eed

-eate

r th

ere

by m

inim

izin

g s

om

e o

f th

e e

ffects

of

conta

ct

str

ess.

Note

: C

onta

ct str

ess m

ay

not be

evid

ent

with a

ll cre

w m

em

bers

(i.e.

those o

f sm

all

to a

vera

ge s

tatu

re).

1 1 1 1

E

mplo

ye

e

E

mplo

ye

e

S

up

erinte

nd

ent

E

mplo

ye

e

Vib

ration

Pro

vid

e c

rew

mem

bers

with a

nti-v

ibra

tio

n g

loves f

or

use d

urin

g

opera

tio

n o

f w

ee

d-e

ate

rs.

1

Sup

erinte

nd

ent

Overa

ll risk

facto

rs

Pro

vid

e e

ducation r

ela

ted t

o id

entified r

isk facto

rs a

nd m

eth

ods o

f w

ork

ing to r

ed

uce r

isk e

.g.

neutr

al jo

int p

ositio

ns,

leg

positio

n,

reductio

n o

f tw

istin

g e

tc.

1

Sup

erinte

nd

ent

Refe

ren

ces:

WC

B o

f B

C, W

ork

sheet A

, R

isk Identification a

nd W

ork

sheet B

, R

isk A

ssessm

ent.

Mita

l, N

icho

lson &

Ayo

ub

(1993),

A G

uid

e to M

anua

l M

ate

rial H

an

dlin

g

Pre

pare

d b

y: F

arz

ana Ism

ail,

Ju

ly 1

8, 20

03