Ma c hine S a fegua r ding O ver view OS H A 1910.212 - G ener a l R equir ements for a ll B 11 Meta lwor k ing Mac hines OS H A S ubP ar t O - Mac hiner y and Mac hine S afeguar ding R egulations ANS I B 11.19 - F ive B as ic S afeguar ding Methods us ed to pr otec t per s onnel ANS I B 11.T R 3; R is k As s es s ment; S ever ity, P robability, F r equenc y, Avoidanc e Awar enes s B ar r ier s ; how they ar e us ed for lower level hazar d expos ur es F ive B as ic MS G C onc er ns ; S afeguar ding, C ontr ols , S tar ter , Dis c onnec t, C over s R otating C omponents mus t be c over ed to at leas t 7’ fr om the floor /platfor m P r es enc e S ens ing S afeguar ding Devic es - s ix c ommon c ategor ies of P S S D’s Infr a-r ed L ight C ur ta ins ; P .O.O. and P er imeter -type; muting and blanking T wo-hand Ac tuator s for c yc le-ac tuation and pos s ibly as a S afeguar ding Means OS H A S afety Dis tanc e for T wo-hand C ontr ols and Infr a-r ed L ight C ur ta ins F unc tion-tes ting L ight C ur ta ins befor e ever y oper ating s hift (tes t r ods ) S afety B loc ks ; when they ar e r equir ed on mec hanic a l power pr es s es P r es s B r ake S afeguar ding methods inc luding L as er -bas ed devic es P oint of Oper ation G uards ; Over, Under , T hrough, Around (O.U .T .A . ) U s e of OS H A and ANS I G uar d Opening S c a les (for a llowed guar d openings ) G uar d Inter loc ks and Func tion-tes ting them per applic able ANS I S tandar ds OS H A 1910.215 (and ANS I S tandar ds ) for G r inder s and Abr as ive Wheels L as er S c anner s vs . P r es s ur e-s ens itive Mats for Ar ea S afeguar ding Dr op-pr obe (r ing-dr op, ha lo) devic es for r iveter s and s pot welder s R obot S afeguar ding, L OT O, and NF P A79 E lec tr ic a l S tandar ds for Mac hines S hields (c huc k s hields and c hip/c oolant s hields ) for L athes , Dr ills , Mills , etc .

C ode of F eder a l R egula tions OS H A S ub-P a r t O Mac hiner y and Ma c hine S afegua rding

1910.211 Definitions 1910.212 G ener a l r equir ements for a ll ma c hines

1910.213 Woodwor k ing ma c hiner y (A NS I 01. 1)

1910.214 C ooper a ge ma c hiner y (ba r r el ma king) 1910.216 Mills a nd c a lenda r s (r ubber a nd pla s tic s )

1910.217 Mec ha nic a l P ower P r es s es (A NS I B 11. 1)

1910.218 F or ging ma c hines (pr es s es a nd ha mmer s )

1910.219 Mec ha nic a l power tr a ns mis s ion a ppa r a tus

S e ver ity of Injur y P r oba bility of Injur y

F r equenc y of E xpos ur e A dd a ny a dditiona l

15 fa c tor s to this tota l

7 6 5 1

ANS I B 11.T R 3-2000 R is k As s es s ment/R is k R educ tion

pr otec t oper a tor & other employees

in the ma c hine a r ea fr om ha za r ds • point of oper a tion • ingoing nip points • r ota ting pa r ts • flying c hips & s pa rks

exa mples of s a fegua r ding methods : ba r r ier gua r ds , two-ha nd ac tua tor s , elec tronic s afety devic es , etc . G ua r ds : P r event a c c es s to P oint of Oper a tion

Devic es : C ontr ol a c c es s to P oint of Oper a tion

Dis ta nc e: L ar ge piec epa r t s ize/s ha pe pr events (S afe H olding) Operator from r eac hing the P .O.O.

of C ontr ols ) in P oint of Oper a tion ha za r d a r ea

S a fe Opening: ¼” or les s opening a t P .O.O. L evel of (H a za r d) E xpos ur e Determines S afeguar ding

H igher L evels of E xpos ur e

require Mor e E ffec tive S a feguar ding

ANS I B 11. T R 3-2000

1

1910.215 Abrasive wheel machinery ANSI B11.9 ANSI B7.1

1

3

6

10

1

2

4

6

Minor Fatal Serious Major Unlikely Certain Possible Probable

1

Seldom Occasional Frequent

2

4

High

Medium

14 13 12 11 10 9 8

1

4

Seldom

Probable

Sever ity + Probability + Frequency = Level of Exposure to Hazards Low

4 3 2

6

Major

OSHA 1910.212 General requirements (a) (1)

5 Safeguarding Methods in ANSI B11.19

Location: (Safe Position

Operator not required to be in the

T a il-out B ar r ier

N ip P oint

R otating Motion

Nip P oint

R otating Motion

L ight C ur ta in P r es enc e S ens ing Devic es

c a n only be us ed on ma c hines that c a n s top c ons is tently a nd immedia tely a nywhere in their s troke or c yc le

without da maging: ma c hine - tooling – work or c reating a nother ha za rd

R otating Motion

Nip P oint Nip P oint

S a fegua rding - gua r d, devic e, method

C ontrols - c ontr ol r elia bility

Dis c onnec t a nd other L O T O devic es

S ta r ter - ma gnetic (dr op-out pr otec tion) C overs - r ota ting c omponents c over ed to

(7 feet - O S H A ) fr om floor /wor k ing pla tfor m (8 feet - A NS I) (10 feet – E ur opea n S tds . ) q Safety Light Curtains / Screens

q S ingle and Multiple S a fety B ea ms

q S a fety Ma t S ys tems Ar ea

q Ar ea S c anning S ys tems L as er S c anners

q R adio F requenc y (c a pa c ita nc e)

q Dr op P r obe (R ing Drop) devic es

2

Awareness Barr iers for lower level EXPOSURES

Rotating/Reciprocating Motion

Nip Point Nip Point

Nip Point Nip Point

5 concerns on any machine

Presence Sensing Safeguarding Devices PSSD’s

L ight C ur ta in B lank ing

L ight C ur ta in Muting (c )(3)(iii)(d) B ypa s s es output s igna l of P . S . D. on ups tr ok e

Muting us ed for :

1) pa r ts ejec tion

2) c irc uit c hec k ing

3) ma ter ia l feeding

Muting done in timing c ir c uit of pr es s c ontr ol

T DC

360 °

180°

1/4” die opening

2-s ided P er imeter L ight C ur ta in

3

270°

Larger “dead-zone” is at TOP instead of the BOTTOM of this Light Curtain

3-sided Light Curtain includes the coil feed

P.S.D. Active

on downstroke

Crankshaft Rotation 90°

P.S.D. Muted

on upstroke

2-ha nd C ontrols rules to be a S A F E G UA R DING DE V IC E :

P r otec t fr om unintended opera tion, A nti-R epea t, C onc ur r ent ½ s ec ma x, H olding-time, Inter r upted-s tr ok e A nc hor ed a t S afety Dis ta nc e, etc .

OS H A S afety Dis tanc e F or mula 2-Hand C ontrol or L ight C urta in

. 200 x 63 = 12.6” S a fety Dis ta nc e

T DC

MP P S top of pa ge 22

L ight C ur ta ins

F L YING OB J E C T S NO P R OT E C T ION

“No-F or c e Ac tuator s ” mounted on s wivels for E R G O when Oper ators ar e us ing a 2 H C for high-r epetition

S T M FL AG NOT S T M FL AG

interr upting interr upting L ight C ur ta in L ight C ur ta in ü Noise ü Impact ü Coolant G ua r d / L ight C ur ta in C ombina tion

4

Stopping Time in seconds at 90°

crankshaft position

x 63 inches per second

(hand speed constant)

= minimum safety distance in inches

Crankshaft Rotation 90

V er tic al L ight C ur tain - S ma ll MO S

H or izonta l L ight C ur ta in - L a r ge MO S

MOS = Minimum Objec t S ens itivity

differ s for ea c h mak e/model of L ight C ur ta in

F unc tion T es ting L ight C ur ta ins before every opera ting s hift F unc tion T es t C hec klis t s teps on this pla s tic - la minated quic k- r eferenc e guide ar e gener ic . R efer to s pec ific pr oc edur es from the manufa c tur er of your light c ur ta in ANS I B 11. 1-2009 - lots of new infor mation on S afety B loc ks

Inter loc k ed S afety B loc k

B lankers inc reas e

S a fety Dis ta nc e

Don’t leave the K E YS in L ight C ur ta ins or in P r es s Mode S elec tors R ed: obs tr uc ted

A mber : bla nk ing

G r een: c lea r

L ight C ur ta in

P roc edur e

ANS I B 11. 1-2001 8. 3. 1 G uar ds and devic es mus t be c hec k ed . . .

T he Mins ter Ma c hine C ompa ny (419) 628-2331 Ma nua l #805D Mins ter , O H www. mins ter . c om

L ight C ur ta ins s hould be only be ins talled, c hec k ed out, a nd

ma inta ined by a “Q ualified P er s on” “a per s on or per s ons who, by pos s es s ion of a rec ognized degr ee or c er tific ate of

profes s ional tra ining, or who, by extens ive knowledge, tr a ining and exper ienc e, has

s uc c es s fully demons tr ated the ability to s olve problems r elating to the s ubjec t matter and wor k.” ANS I B 30.2-1983

Na tiona l S a fety C ounc il (800) 621-3433 #129760000

R os elle, IL www.ns c .or g

5

“Function Testing”

S a fegua r ding S ys tem

P R E S S B R A K E S

A O P D - Ac tive O pto-E lec tr onic P r otec tion Devic e L ight C ur ta in and Ma nual

G a te pr otec t O per a tor

L exa n G ua r ding keeps

othe r pe ople out of P O O

C los e-proximity

P oint-of-Oper ation L as er AOP D Devic e mounted with ZE R O

S afety Dis tanc e ANS I B 11.3-2012

B lanking No B lanking r equir ed r equir ed

F eed line height F eed line height

a djus ta ble height ta ble

C a n r eac h over or under L C C a n’ t rea c h over or under L C

R obotic a lly-fed P res s B r ake with P er imeter L ight C urtain

Inter loc ked P er imeter G uar d

MP P S pages 26-28

6

ANSI B11.3-2012 Press Brake Safeguarding

Light Curtain - Press Brake bending operation

ONLY FOR HYDRAULIC

Light Curtain and Two-hand Control protect Operator

LazerSafe

Point of Operation Guard Requirements

OSHA 1910.217(c)(2) and ANSI B11.1-2009(8)(5)

• can’t reach through, over, under, around

• meets Table 0-10 for openings and distances

• no pinch points between guard & moving parts

• good visibility into the point of operation

• fasteners not readily removable (tool required)

• *mater ials strong enough to protect people

• *free from sharp edges that could injure people

OS H A A NS I

R is k A s s es s ment for

Inter loc k R eliability

O.U.T .A.

L atc hing

OS H A G uar d Opening S c a le – 1948 L iberty Mutua l a nd ANS I S ta nda rd wr iting c ommittee

A NS I G uar d Opening S c a le – 1996 L iberty Mutua l a nd ANS I S ta nda rd wr iting c ommittee

Newer G ua rd Inter loc k S witc hes K E Y geometry ma kes it diffic ult to defea t K E Y for c es a ma ke/br ea k of e lec tr ic a l c ontac ts

K E Y

K E Y

F unc tion T es ting P oint of oper ation G uar d

O T H E R F T C ’ s : L ight C ur tains , 2-H a nd C ontr ols , P erimeter G ua r ds , etc .

7

Over, Under, Around, Through?

Guard

Opening

Scale

Comparison

§

Minor R is k

– C at. 1

§

S er ious R is k

– C at. 2

§

Ma jor R is k

– C at. 3

§

F a ta l R is k

– C at. 3

2 R ea s ons to “F unc tion-tes t” G ua r d Inter loc ks

befor e s tar ting ea c h new oper a ting s hift:

1) to ma ke s ur e the inter loc k WOR K S

2) to ma ke s ure it has NOT been C H E A T E D

1/4” ma ximum opening B oth ANS I S ta nda r ds C over ed s pindle end/nut OS H A 1910.215 (a )(2)(i) Dir ec tion A r r ow B oth ANS I S ta nda r ds

1/8” ma ximum opening for Wor k R es t #1 OS H A Mac hine S a fegua r ding

violation-every s tate in the U. S . A. OS H A 1910. 215 (a )(4) Ar ea L as er S c anner s on AG V ’s

T wo-hand C ontrol on floor

pedes ta l YE S

L -s haped Ma ts on a T ube B ender

1

2

Area Guarding: 1 Safety and 1 Warning Zone, horizontal mounting

NO

Access Guarding: 1 Safety Zone, vertical mounting, using contour-as-reference

Area Laser Scanners

8

Area Laser Scanners

Mats must be fastened to floor to prevent moving them too close to the hazard area

ANSI B7.1-2000 Abrasive Wheels

ANSI B11.9-2010 Gr inding Machines

repr inted with permission SICK Inc.

Area Guarding:

2 Safety and 2 Warning Zones,

hor izontal mounting

Access Guarding:

2 Safety Zones, vertical mounting,

using contour-as-reference

3-s ided F loor Markings

and L exa n G ua rds

Drop-P r obe Devic e

on a S pot-Welder

L a s er S c a nner

“ Dr op-P robe” Devic es “ R ing-drop” Devic es

“ H alo” Devic es ANS I B 11. 19 - 2010 8. 7

A ls o s ee A N S I B 154. 1-1995 R ivet S etting E quipment

R iveter s , S pot Welders , S ta pler s , S ta k er s E yeletters , T er mina tors , Dink er s , C lic k er s

r epr inted with per mis s ion S c ientific T ec hnologies Inc .

R ota r y Inter loc k Magnetic inter loc k

P oint of Operation L ight C ur tain

P r es s ur e A c tua tor s ens itive ma t oper ated

A c tua tor inter loc k oper ated inter loc k

G ra b-wire E -s top c a ble

S olenoid loc k ing P oint of Operation

inter loc k L ight C ur tain

9

Per imeter Light Cur tain

Laser Scanner

Awareness Barr ier

Laser-cutting System

Radio Frequency

Riveter with a Drop-Probe

Mater ial Handling for

Bump Switch Laser-cutting system

Grab-wire

E-stop cables

Mechanically ver ifies the absence of

hand or fingers in Point of Operation

Combination of Safeguarding Devices

L ight C urta in knows differ enc e between c a r a nd pers on

r epr inted with per mis s ion S IC K Inc .

When R /A s hows tha t A /B a r e not enough:

P er imeter G ua r ding for A uxilia r y E quipment

P ic togr ams

P olyc a rbonate “V is ion P a nels ”

ANS I B 11.19 - 2010 Annex E “C ons ider ations for T r ans par ent G uar ds ”

12 inc h s weep a nd 60 inc h height (A NS I/R IA ) 6 inc h (.15m) s weep, 72 inc h (1. 8m) height (C S A )

Da nger a nd

War ning S igns

10

L a tc hing P ull-s witc h

B elt C onveyor

R es et

R es et R ed E -S top C ables

ANS I B 20. 1-2006 5. 11. 2 (1) C onveyor s that s tart up ANS I B 20. 1-2006 5. 11. 4 automatic a lly r equir e an Manual r es et or s tar t Audible or V is ual Warning at the loc ation wher e Devic e that c an be c lear ly the E mer genc y S top s een or heard at all points was initiated r equir ed that people may be pr es ent to r es ume oper ation

S ourc e : L ittle fus e

T hes e a nd other s a r e fr ee downloa ds ; c ema net.or g

C onveyor E quipment Manufa c turer s As s oc ia tion

T his meets NF P A 79 E lec tr ic a l S ta nda rd for Indus tr ia l Ma c hinery

• R ed B utton E ngaged

NFPA 79 Electrical Standard

for Industrial Machinery 2015 Edition

Main Power Disconnects - Motor Starters Voltages - Grounds - E-stops - and more

Category 1 Stop Controls Category 2 Stop Controls Category 3 Stop Controls

11

Artic le 119.7 Electr ical Safety Program

Rope Pull Cable

type of E-Stop

requires reset

when tr ipped

(A) General.

The employer shall

implement and

document an overall

electr ical safety

program that directs

activity appropr iate

for the voltage, energy

level, and circuit

2015 EDITION

conditions.

• Yellow Background • Manual Latch

Disengaged

S pr ing L oa ded C huc k-Wrenc h

to pr event wr enc h from being left in c huc k www. r oc kfor ds ys tems . c om

C hip/C oolant S hield with built-in Inter loc k

H inged C huc k S hield with built-in Inter loc k

R eleas ing and L ifting

One s ec tion loc ked up

T eles c opic s ta inles s -s teel s leeves c over hor izonta l

r ota ting c omponents

U niver s a l B a ll & S oc ket

S hields

12

#1 Hazard - star ting lathe with key in chuck