Iso 13857 Free Download Pdf

Source: Procter Machine Guarding

Fortunately the new standard is, in essence, an amalgamation of the two previous standards, with all of the principles, tabulated data and safety distance unchanged. There has been some minor redrafting and renumbering of clauses, but this is little more than a tidying-up exercise.
There is no doubting that the new standard is essential when designing machine guards, but the standard's limitations must be borne in mind. For example, sub-clause 4.1.1 lists a number of assumptions, including:
- there is some contact with the reference plane while wearing shoes (use of high-soled shoes, climbing and jumping are not included);
- no aids such as chairs or ladders are used to change the reference plane;
- no aids such as rods or tools are used to extend the natural reach of the upper limbs.
In reality, a worker who makes the unwise decision to try clearing a jam without stopping a machine could well also decide to stand on something or use an improvised tool to do so. The standard is also based on anthropometric data and therefore it states: 'Because safety distances depend on size, there will be some people of extreme dimensions who will be able to reach hazard zones even when the requirements of this International Standard are complied with.' It is therefore crucial that guards are designed in the light of a formal risk assessment as well as the data contained in the standard.
Following the publication of BS EN ISO 13857 in April 2008, Procter Machine Guarding has revised its popular Safety Distance Calculator for establishing the required safety distances and heights of machine guards. As with the previous release, Version 2 is very intuitive, with drop-down menus from which users select the application risk level (high or low), the horizontal distance to the hazard and the height of the hazard. The calculator then automatically calculates and displays the required height for the protective structure. Additionally, the calculator gives the safety distances for slots, round, square and irregularly shaped apertures through which a person could reach.
The Safety Distance Calculator is based on a Microsoft Excel spreadsheet, though no knowledge of this software package is required. However, if users require further assistance with calculating safety distances, Procter Machine Guarding can either help directly or put users in touch with appropriate experts.

Fortunately the new standard is, in essence, an amalgamation of the two previous standards, with all of the principles, tabulated data and safety distance unchanged. There has been some minor redrafting and renumbering of clauses, but this is little more than a tidying-up exercise.
There is no doubting that the new standard is essential when designing machine guards, but the standard's limitations must be borne in mind. For example, sub-clause 4.1.1 lists a number of assumptions, including:
- there is some contact with the reference plane while wearing shoes (use of high-soled shoes, climbing and jumping are not included);
- no aids such as chairs or ladders are used to change the reference plane;
- no aids such as rods or tools are used to extend the natural reach of the upper limbs.
In reality, a worker who makes the unwise decision to try clearing a jam without stopping a machine could well also decide to stand on something or use an improvised tool to do so. The standard is also based on anthropometric data and therefore it states: 'Because safety distances depend on size, there will be some people of extreme dimensions who will be able to reach hazard zones even when the requirements of this International Standard are complied with.' It is therefore crucial that guards are designed in the light of a formal risk assessment as well as the data contained in the standard.
Following the publication of BS EN ISO 13857 in April 2008, Procter Machine Guarding has revised its popular Safety Distance Calculator for establishing the required safety distances and heights of machine guards. As with the previous release, Version 2 is very intuitive, with drop-down menus from which users select the application risk level (high or low), the horizontal distance to the hazard and the height of the hazard. The calculator then automatically calculates and displays the required height for the protective structure. Additionally, the calculator gives the safety distances for slots, round, square and irregularly shaped apertures through which a person could reach.
The Safety Distance Calculator is based on a Microsoft Excel spreadsheet, though no knowledge of this software package is required. However, if users require further assistance with calculating safety distances, Procter Machine Guarding can either help directly or put users in touch with appropriate experts.

Upper limbs – Safety distances (according to DIN EN ISO 13857) for reaching over
d b
a
for reaching up a height of the danger zone b height of the protective structure c horizontal distance to danger zone d protective structure
For determining the relevant safety distances, risk assessment must be carried out in accordance with EN ISO 12100-1 or EN ISO 14121-1. If the values determined for a, b or c are between two of the values given in the table, those values must be app­lied which ensure a higher level of integrity.
for reaching through Opening2 e
Illustration
Safety distance s slot
height to danger zone h low risk ≥ 2500 mm
square
circle
e ≤ 4
s ≥ 2
s ≥ 2
s ≥ 2
4 < e ≤ 6
s ≥ 10
s ≥ 5
s ≥ 5
6 < e ≤ 8
s ≥ 20
s ≥ 15
s ≥ 5
8 < e ≤ 10
s ≥ 80
s ≥ 25
s ≥ 20
10 < e ≤ 12
s ≥ 100
s ≥ 80
s ≥ 80
12 < e ≤ 20
s ≥ 120
s ≥ 120
s ≥ 120
20 < e ≤ 30
s ≥ 850 1) s ≥ 120
s ≥ 120
30 < e ≤ 40
s ≥ 850
s ≥ 120
Finger tip
high risk ≥ 2700 mm or other measures
e
s
c
Height of the danger zone a2
2600 2400 2200 2000 1800 1600 1400 1200 1000 800 600 400 200 0
Height of the protective structure b1
1000
1200
14003
– 900 100 1100 600 1300 1100 1400 1100 1500 1300 1500 1300 1500 1400 1500 1400 1500 1300 1500 1200 1400 1200 1400 1100 1200 1100 1100
– 800 100 1000 600 1200 900 1300 1000 1400 1000 1400 1000 1400 1000 1400 1000 1400 900 1300 500 1300 300 1200 200 900 200 500
– 700 100 900 500 1000 700 1100 900 1100 900 1100 900 1100 900 1100 900 1000 600 900 – 800 – 400 – – – –
1600 – 600 100 800 500 900 600 900 900 900 900 900 800 900 500 900 300 800 – 600 – – – – – – – –
Horizontal distance to danger zone c4
1) Protective structures with a height of less than 1000 mm are not mentioned as they do not ensure adequate restriction of movements. 2) For danger zones above 2500 or 2700 mm see safety distances for reaching up.
1800
2000
2200
– 600 100 700 400 800 500 800 600 800 500 800 100 800 – 700 – – – – – – – – – – – –
– 500 100 600 350 600 350 600 – 600 – 500 – – – – – – – – – – – – – – – –
– 400 100 400 250 400 – 400 – – – – – – – – – – – – – – – – – – – –
2400 – 300 100 300 – 300 – – – – – – – – – – – – – – – – – – – – – –
2500 – 100 – 100 – – – – – – – – – – – – – – – – – – – – – – – –
Measurements in mm
3) For high-risk danger points, protective structures lower than 1400 mm should not be used without additional technical safety measures. 4) The upper values apply to low risk. The lower values apply to high risk or other technical safety measures are applied.
e
s ≥ 130
≤ 120
≥ 230
≥ 720
Arm and hand supported up to the knuckle joint
≥ 550
≤ 120
≤ 120
≥ 620
Arm supported up to the elbow
e
s
Arm supported up to the wrist
e
≥ 850
≤ 120 ≥ 300
Finger up to knuckle joint
Arm up to shoulder joint s
40 < e ≤ 120
s ≥ 850
s ≥ 200 s ≥ 850
s ≥ 850
Safety of machinery
Safety distances against reaching with upper and lower limbs For danger points which cannot be prevented by design measures and are safeguarded by safety devices, safety distances must be observed
Measurements in mm
1) Where the length of a slot opening is ≤ 65 mm, access is limited by the thumb and the safety distance can be reduced to 200 mm.
2) The opening width e corresponds to one side in case of square openings, to the diameter in case of circular openings and the smallest dimension in case of slot openings. For openings > 120 mm, the safety distances for reaching over protective structures must be applied.
Order No. 68e DP
Minimum gaps (according to EN 349)
Lower limbs – Safety distances (according to DIN EN ISO 13857)
Annex B, informative
for reaching through Finger
Fist / hand / wrist ≥ 25mm
Toes
Part of the body
Foot
Illustration
Opening e
Safety distance s slot
≥ 100mm ≤ 50 mm
e ≤ 5
e
Tip of the toe / toe
15 < e ≤ 35
s
≥ 120 mm
5 < e ≤ 15
Distances preventing free access by the lower limbs square / circle
s = 0
s = 0
s ≥ 10
s = 0
≥ 80 1) s
≥ 25 s
This table stipulates distances for special cases where access by the lower limbs of a person standing upright is prevented without additional measures. Where there is a risk of slipping or misuse, the values given in the table may be inadequate.
≥ 50 mm
Case 1 e
Arm
Head
Leg
≥ 180 s
≥ 80 s
Foot
Body ≥ 180 mm
≥ 120mm
35 < e ≤ 60
l
Where the value h is between two values of the table, the distance for the higher value of h should be selected.
Case 2
Case 3
blocking distance
a protective structure
≥ 500 mm
60 < e ≤ 80
s
≥ 650 2) s
≥ 180 s
a
a
h gap up to protective structure
≥ 300mm
a
h
Leg up to knee
e
80 < e ≤ 95
≥ 11003) s
s
Crushing is not considered dangerous for the parts of the body mentioned unless the distances are smaller than those specified.
e
Leg up to crotch Berufsgenossenschaft Energie Textil Elektro Medienerzeugnisse Gustav-Heinemann-Ufer 130 50968 Köln www.bgetem.de Order No. 68e DP 10·5·(20)·8·15 – All rights remain with the publisher
s Measurements in mm
1) For slots with a length of ≤ 75 mm, the safety distance can be reduced to ≥ 50 mm. 2) This value relates to the leg (tip of the toe up to knee). 3) This value relates to the leg (tip of the toe up to crotch).
95 < e ≤ 180 180 < e ≤ 240
s ≥ 11003)
not admissible
l
≥ 650 2) s
s ≥ 11003)
s ≥ 11003)
h l
h l
h ≤ 200
l ≥ 340
l ≥ 665
l ≥ 290
200 < h ≤ 400
l ≥ 550
l ≥ 765
l ≥ 615
400 < h ≤ 600
l ≥ 850
l ≥ 950
l ≥ 800
600 < h ≤ 800
l ≥ 950
l ≥ 950
l ≥ 900
800 < h ≤ 1000
l ≥ 1125
l ≥ 1195
l ≥ 1015 Measurements in mm