Blog

Machine safety Guarding Blog Post

Lathe Machine

Lathe machine is very common and most used machine in every tool room or workshop in maintenance department . Lathe machine have cutting and pinching hazard. While doing machining chip/ burr can fly and hit the operator and make serious cuts also. There is ball screw along the length which poses entanglement hazard. Chuk cover also needed for protection against rotating movements. That’s why machine safety guards required for lathe machine.

More about Lathe Gaurds

Milling Machine

Milling Machine have movement in X, Y , Z direction. There is hazard of machined chip/burr to project on operator . That’s why milling machine needs proper machine safety guarding. For milling machine guard there is usually front transparent PC sheet constructed with aluminum profile. It is generally interlocked with main spindle motor. It is having adjustments for both sides .

More about milling machine guard

Grinding Machine Guard

Drill Machine Guard

IES can provide other tool room machine safety guards also like bench grinder , bend saw cutting machine , slotting machine etc. For Customized requirement please contact All our tool room machine safety guards are as per BIS Machine Safety Standards

Standards related to machinery safety

The BIS has various technical committees, most relevant for this study are the Mechanical
Engineering Department MED 40 Safety of Machinery, Electrotechnical Department ETD 44
Safety of Machinery- Electrotechnical Aspects, and Chemical Department CHD 8 Occupational
Safety and Health.

A more recent committee under Mechanical Engineering Department, MED 40: Safety of
Machinery has been established and mirrors the International Organization for Standardization’s
ISO/TC 199 Safety of Machinery. The BIS committee has finalized 32 Indian Standards (under
print) which are an adoption of the corresponding ISO standard.

List of 32 ISO Standards on machinery safety adopted as Indian Standards by BIS

SI NO.ISO StandardsTitleIndian StandardsMonth of
publication
BIS
1.ISO 12100: 2010Safety of machinery — General principles for design — Risk assessment and risk reductionIS 16819: 2018Nov 2018
2.ISO 13849-1:2015Safety of machinery — Safety-related parts of control systems — Part 1: General principles for designIS 16810 (Part 1): 2018Nov 2018
3.ISO 13849-2:2012Safety of machinery — Safety-related parts of control systems — Part 2: ValidationIS 16810 (Part 2): 2018Nov 2018
4.ISO 13850: 2015Safety of machinery — Emergency stop function — Principles for designIS 16818: 2018Nov 2018
5.ISO 13851: 2002Safety of machinery — Two-hand control devices — Functional aspects and design principlesIS 16817: 2018Dec 2018
6.ISO 13854: 1996Safety of machinery — Minimum gaps to avoid crushing of parts of the human bodyIS 16816: 2019Feb 2019
7.ISO 13855: 2010Safety of machinery — Positioning of safeguards with respect to the approach speeds of parts of the human bodyIS 16815: 2019Feb 2019
8.ISO 13856-1:2013Safety of machinery — Pressure-sensitive protective devices — Part 1: General principles for design and testing of pressure-sensitive mats and pressure-sensitive floorsIS 16835 (Part 1): 2018Nov 2018
9.ISO 13856-2:2013Safety of machinery — Pressure-sensitive protective devices — Part 2: General principles for design and testing of pressure-sensitive edges and pressure-sensitive barsIS 16835 (Part 2): 2018Nov 2018
10.ISO 13856-3:2013Safety of machinery — Pressure-sensitive protective devices — Part 3: General principles for design and testing of pressure-sensitive bumpers, plates, wires and similar devices.IS 16835 (Part 3): 2018Nov 2018
11.ISO 13857: 2008Safety of machinery — Safety distances to prevent hazard zones being reached by upper and lower limbsIS 16814: 2018Nov 2018
12.ISO 14118: 2000Safety of machinery — Prevention of unexpected start-upIS 16813: 2019Feb 2019
13.ISO 14119: 2013Safety of machinery — Interlocking devices associated with guards — Principles for design and selectionIS 16812: 2018Nov 2018
14.ISO 14120: 2015Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guardsIS 16811: 2018Nov 2018
15.ISO 14122-1:2016Safety of machinery — Permanent means of access to machinery — Part 1: Choice of fixed means and general requirements of accessIS 16809 (Part 1): 2018Nov 2018
16ISO 14122-2:2016Safety of machinery — Permanent means of access to machinery — Part 2: Working platforms and walkwaysIS 16809 (Part 2): 2018Nov 2018
17ISO 14122-3:2016Safety of machinery — Permanent means of access to machinery — Part 3: Stairs, stepladders and guard-railsIS 16809 (Part 3): 2018Nov 2018
18ISO 14122-4:2016Safety of machinery — Permanent means of access to machinery — Part 4: Fixed laddersIS 16809 (Part 4): 2018Dec 2018
19ISO 14123-1:2015Safety of machinery — Reduction of risks to health resulting from hazardous substances emitted by machinery — Part 1: Principles and specifications for machinery manufacturersIS 16834 (Part 1): 2018Nov 2018
20ISO 14123-2:2015Safety of machinery — Reduction of risks to health resulting from hazardous substances emitted by machinery — Part 2: Methodology leading to verification proceduresIS 16834 (Part 2): 2018Nov 2018
21ISO 14159: 2002Safety of machinery — Hygiene requirements for the design of machineryIS 16808: 2018Nov 2018
22ISO 19353: 2015Safety of machinery — Fire prevention and fire protectionIS 16807: 2018Nov 2018
23ISO 21469: 2006Safety of machinery — Lubricants with incidental product contact — Hygiene requirementsIS 16912: 2018May 2018
24ISO 29042-1:2008Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 1: Selection of test methodsIS 16806 (Part 1): 2018Nov 2018
25ISO 29042-2:2009Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 2: Tracer gas method for the measurement of the emission rate of a given pollutantIS 16806 (Part 2): 2018Nov 2018
26ISO 29042-3:2009Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 3: Test bench method for the measurement of the emission rate of a given pollutantIS 16806 (Part 3): 2018Nov 2018
27ISO 29042-4:2009Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 4: Tracer method for the measurement of the capture efficiency of an exhaust systemIS 16806 (Part 4): 2018Nov 2018
28ISO 29042-5:2010Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 5: Test bench method for the measurement of the separation efficiency by mass of air cleaning systems with unducted outletIS 16806 (Part 5): 2018Dec 2018
29ISO 29042-6:2010Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 6: Test bench method for the measurement of the separation efficiency by mass of air cleaning systems with ducted outletIS 16806 (Part 6): 2018Nov 2018
30ISO 29042-7:2010Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 7: Test bench method for the measurement of the pollutant concentration parameterIS 16806 (Part-7): 2018Sept 2018
31ISO 29042-8:2011Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 8: Room method for the measurement of the pollutant concentration parameterIS 16806 (Part 8): 2018Nov 2018
32ISO 29042-9:2011Safety of machinery — Evaluation of the emission of airborne hazardous substances — Part 9: Decontamination indexIS 16806 (Part 9): 2018Nov 2018

Machine safety products as per IS Machine safety standards

Conveyor Belts – Hazard zones

Large length of conveyor belts are used to transport bulk are often massive and powerful enough to kill. For Mines and minerals industry , conveyor belts are made of rubber wrapped around big MS round rollers (pully) with idler along the length. It is important to have conveyor belt guarding to minimize the accidents and hazards.

The conveyor itself

A simple conveyor carrying 200 TPH material for 30 meter length, requires around 10 KW of motor drive power. It has a power to carry and elevate tons of material. It can destroy the human.

The Material which is on conveyor

A worker could be injured by the lump of conveyed material or the weight of the large quantity of material spilled or discharged from conveyor belt. A worker can be engulfed by material stream. A worker can also be trapped the material stream and fix object

The Belt

A worker can entangle in conveyor and get carried away wit conveyor . Conveyors have pinch , Nip and shear hazard along the length. In addition to carried away belt acts like a giant grinder conveyor belts have known to cut through steel structure. human body is very soft compared to steel.

Stored energy

When conveyor is stopped, there is stored energy in form of belt tension. If the frication between belt and pully is not sufficient, the belt may release all of the tension with conveyor power down and locked out. This release will usally come in form of pulley slip. The belt move suddenly. If worker is on the belt or close enough to be pulled during sudden release of energy, injury or death can be occur.

Rotating Component

These parts include idlers, drive shafts , pully and speed sensors. high speed moving rotating components presents pinch points hazards. Injuries or deaths caused by rotating parts are around 5% as per OSHA study conveyor belt guarding helps to minimize the accidents due to rotating components.

Similar Products for conveyor guarding

Mayur Karathia from machineguarding.in is now CMSE®, (certified machinery safety expert, TUV NORD)

We are happy to announce that , Mayur Karathia from our organization is now CMSE®, ( Certified Machinery Safety Expert, TUV NORD) . Now we can provide consultancy of risk assessment for machinery safety .

As CMSE® ,

  • Develop a greater understanding of the requirements of the relevant regulations and standards
  • Discover how these may be applied to the design, build, maintenance and operation of machinery
  • Understand the obligations to be met when specifying, designing, constructing or putting machinery into service
  • Manage projects from risk assessment to safety upgrade and implementation
  • Design functional safety systems in accordance with EN ISO 13849-1
  • Attain an internationally valid certificate from TUV NORD

Our Solutions

Background

To understand machinery safety standards in India we have to learn how regulatory and legal framework formulated. In India , Ministry of Labor and Employment is responsible for health and safety and welfare of the workers. They have formulated National Policy on Safety, Health and Environment at workplace. On this policy, Government body Directorate General Factory Advice and Service
Institute (DGFASLI)
Formulated “Factories Act“.

Other Regulatory Frame work is Bureau of Indian Standards (BIS) .which formulates Indian standards for machinery safety. These standards are formulated and published by technical committee which consist of all the stakeholders.

Another Ministry , Ministry of Heavy Industries and Public Enterprise has introduced national capital goods policy in 2016 outlining minimum acceptable safety, environmental impact standards, and performance requirements for machinery.

In this article I will discuss machinery standards published by BIS

Machinery Safety Standards by BIS

The BIS has various technical committees, most relevant for this study are the Mechanical Engineering Department MED 40 Safety of Machinery, Electrotechnical Department ETD 44 Safety of Machinery- Electrotechnical Aspects, and Chemical Department CHD 8 Occupational Safety and Health.

A more recent committee under Mechanical Engineering Department, MED 40: Safety of Machinery has been established and mirrors the International Organization for Standardization’s ISO/TC 199 Safety of Machinery. The BIS committee has finalized 32 Indian Standards (under print) which are an adoption of the corresponding ISO standard.

BIS published Machinery Safety Standard

  • IS 16819:2018 Safety of machinery — General principles for design — Risk assessment and risk reduction
  • IS 16810 (part 1):2018 Safety of machinery –Safety related parts of control systems — Part 1: General principles for design
  • IS 16810 (part 2):2018 Safety of machinery –Safety related parts of control systems — Part 2: Validation
  • IS 16818:2018: Safety of machinery — Emergency stop function – Principles for design
  • IS 16817: 2018: Safety of machinery — Two-hand control devices — Functional aspects and design principles
  • IS 16816: 2019: Safety of machinery — Minimum gaps to avoid crushing of parts of the human body
  • IS 16815: 2019: Safety of machinery — Positioning of safeguards with respect to the approach speeds of parts of the human body
  • IS 16814: 2018 Safety of machinery — Safety distances to prevent hazard zones being reached by upper and lower limbs
  • IS 16813: 2019: Safety of machinery — Prevention of unexpected start-up
  • IS 16812: 2018: Safety of machinery — Interlocking devices associated with guards — Principles for design and selection
  • IS 16811: 2018 : Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards

On the next posts I will discuss each Machinery safety standards in brief, you can find the all Machinery Safety Standards in India here.

Guarding Related Products

Belt drive guard

Power transmission guards mainly chain drive and belt drive guards are constructed from woven mesh , weld mesh or perforated metal. This gives guard inside visibility and heat transfer space , It is also required to take temperature of pully and sheevs. So what is the optimum / maximum opening allowed in Safety guard ?

what is the optimum / maximum opening allowed in Safety guard ?

Mesh or grid guards must be installed with sufficient clearance to prevent any person from reaching through the openings and contacting the danger point. This is done by placing the guard at a safe distance from hazardous moving parts.

The effectiveness of a guard opening can be judged by a reach test
carried out with the machinery locked out and safely at rest. The
relationship between the size of the opening in the guard and the
distance to the danger point is illustrated below

One has to take care of machine safety standard ISO 14120:2015 Safety of machinery — Guards — General requirements for the design and construction of fixed and movable guards. IES provides all type of this safety guard accordingly the ISO standard, Few are listed as below.

Products

Hazards in crushers

impact crusher  safety guarding

In Mining process , Crushers are the first line of equipment for processing raw minerals. There are several types of crushers are available like impact crusher , jaw crusher, gyratory crushers, All these equipment have crushing and cutting hazards. Impact crushers are operated with high power motor through belt drives. To feed in/ feed out material there will be conveyor guards. Conveyor guards rollers are source of nipping hazards . All this hazard required machine guarding. We IES provides safety guarding in crusher for all those hazard as per machine safety standards OSHA 1926.55 and ISO 14120:2015

products for safety Guarding in crusher

Conveyor Guarding

Mining & Minerals, Power Generation, Steel, Asphalt, Cement, Elevators, Manufacturing, Oil & Gas, Pulp & Paper, and Water & Waste Water ndkfkfdnfmndmfnmdnfmdnfmdn sfnhksjfksjdkfj nnfdkjfkdsaj njkj

ndfknnfkasdnfsda

nfdknfnksadjfnndsjfaksdnfk nfkjdskfnndskfnaknf

fkdjfkdjfjdlfjdkjfkdjfkdjfklajkjdjf

Machine guarding , Perimeter Guarding

Any moving rotating parts of machine or process which may cause injury must be protected by means of guarding. When the operation of a machine or accidental contact with it can injure the operator or others in the vicinity, the hazards must be either controlled or eliminated.

This post describes the various hazards of mechanical motion and presents some techniques for protecting workers from these hazards. General information covered in this post includes — where mechanical hazards occur, the hazards created by different kinds of motions and the requirements for effective safeguards, as well as a brief discussion of nonmechanical hazards.