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f2413-05 has something to do with chain saw protection. and I think 175/c75 is some kind of osha requirement for safety footwear?
F2413 is the ASTM designation for footwear protection standards for work boots. The "-05" signifies the 2005 version which was updated in 2011 and is signified with "-11" suffix. The last part "I75" (not 175) and "C75" designate (I)mpact resistance of 75 ft lbs and (C)ompression resistance of 75 ft lbs (there are boots that only resist 50 ft lbs also that would bear the designation I50 C50). There are further designations for various other properties. . .EH = Electrical isolation to help prevent electrocution. .CD - Conductive (i.e., it allows electrical grounding) for use in potentially explosive environments (where gases, explosives and volatile chemicals are present). .SD = Static Dissipative (kind of a combination of EH & CD). .PR = Puncture Resistant. .CS - Chain Saw resistant. .DI = Dielectric (a higher grade EH, I believe).
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What is astm f2413-11?
ANSI Z41 - that was the standard for protective footwear has been replace by ASTM (American Society for Testing & Materials) F2412-05 (Testing methods for Protective Footwear) and F2413-05 (Minimum requirements for Protective Footwear). The latest addition/modification is ASTM F2413-11. The details of which can be purchased from ASTM website for USD 40- USD 48 with redline.
What is the nomenclature of a Timing belt?
Numerous types of belts having different nomenclature are available in the market. For example ; belts having trapezoidal teeth, circular teeth, inch series, metric series. To know all, visit following link ; Industrial Items http://industrial-items.blogspot.in/2013/05/timing-belts.html
How governing system of steam turbine is being done?
(pictures insert is not being allowed by wiki. i am sorry)TOPICS OF DISCUSSIONCONCEPT OF GOVERNING SYSTEMFEATURES OF KWU GOVERNING SYSTEMOVERVIEW OF GOVERNING RACKFUNCTIONING OF EHC CIRCUITSFREE GOVERNOR MODE OPERATIONBEST PRACTICES IN GOVERNING SYSTEMEMERGENCIES IN GOVERNING SYSTEMWHAT IS GOVERNING SYSTEM ?n Turbine Governing system is meant for regulation of turbine speed under no load and varying load condition.n It helps in precise control of grid frequency under normal operation and protects the machine as well as grid during emergency situation.KWU GOVERNING SYSTEM-FEATURESn ELECTRO-HYDRAULIC GOVERNING SYSTEM WITH HYDRAULIC BACKUPn OPERATION OF STOP VALVES BY STARTING & LOAD LIMITING DEVICE (HYDRAULIC)n ROLLING, SYNCHRONIZATION & LOAD OPERATION BY HYDRAULIC / ELECTRO- HYDRAULIC SYSTEMn ELECTRO- HYDRAULIC SPEED GOVERNOR WITH HYDRAULIC BACK UPn SAFE SHUTDOWN BY HYDRAULIC / ELECTRO- HYDRAULIC SYSTEMn ELECTRICAL AND HYDRAULIC PROTECTION SYSTEM ALONG WITH TEST FACILITIESFEATURES OF EHCn AUTO ROLLING & SYNCHRONIZATION THROUGH SPEED CONTROLLER UNDER INFLUENCE OF TSEn CONSTANT LOAD OPERATION BY LOAD CONTR. WITH PRESSURE CONTR. AS BACKUPn RUNBACK OPERATION THROUGH PRESSURE CONTR.n EMERGENCY OPERATION THROUGH SPEED CONTR.n AUTO GRID FREQUENCY CONTROL THROUGH EXTERNAL FREQUENCY INFLUENCEn AUTO UNLOADING AT HIGH FREQUENCY THROUGH INTERNAL FREQUENCY INFLUENCEn CONTROL DURING AUTOMATIC TURBINE TESTING,ISOLATED GRID CONDITION & LSR OPERATIONSPEED CONTROLLER CIRCUITL - Raise & Lower command from UCB :nr - Speed Reference :nr limit - Delayed Speed Reference :NLC - No Load Correction (Ensures required Speed controller O/P for Rolling even when Speed reference n r matches n act.)n act - Actual Speed :hr nc - Speed Controller O/P with DROOP of + / - 10.0 V for nr lim ~ n act = 150 RPM ( GAIN = 22LOAD SET POINT GENERATION CIRCUIT1 - SET POINT FOLLOW UP when Automatic Grid Control or CMC In service(Other Raise / Lower commands get blocked)2 -- TSE ENABLING whenA) GCB is closed ANDB) Load controller (L C) not OFF ANDC) Fast calibration signal 6 absent ANDD) I) Load controller (L C) in controlOR ii) Pressure controller with initial pressure in actionOR iii) Turbine follow mode in serviceThis helps to bring manually adjusted gradient and stress effect in service.+/- 10 V gradient => +/- 25 MW / MIN for 200 MW unitsOR +/- 50 MW / MIN for 500 MW units.PRESSURE CONTROLLER CIRCUITEHC TRANSFER CIRCUITFGMO - BACKGROUNDn Unique frequency band of 49.0 Hz to 50.5 Hz, as specified by IEGCn Scheduling & dispatch by RLDCs/SLDCs is based on day ahead demand & availabilityn Frequency control by load-generation balance in every 15 mins time blockn Wide frequency variation during Grid disturbance, Unit outage, change in demand, etc.n No primary response by generators to maintain frequency under such system contingencyn Emergencies caused due to frequency control only through importing /cutting load by system operatornFGMO - GRID CODESn All generating units should have their speed governors in normal operation at all times to enable Grid frequency control by loading / unloadingn Droop characteristic for primary response should be within 3% to 6%n Each unit shall be capable of instantaneously picking up at least 5% extra load for a minimum of 5 mins (up to 105%MCR), during fall in frequencyn No dead bands and/or time delays shall be deliberately introducedn Facilities like load limiters, CMC, etc. shall not be used to suppress the normal governor actionIMPLEMENTATION OF FGMOIn line with clause Clause 1.6 of IEGC and CERC order dated 30-10-99, date of FGMO implementation, as decided by REBs are :-n Western Region - 19-05-03 ( ABT - 01-07-02 )n Southern Region - 01-08-03 ( ABT - 01-01-03 )n Northern Region - 01-10-03 ( ABT - 01-12-02 )n Nor-East Region - 22-12-03 ( ABT - 01-11-03 )n Eastern Region - 02-01-04 ( ABT - 01-04-03 )FGMO CHARACTERISTIC FOR KWU M/CMAJOR ISSUES WITH FGMO IN 2004Ø Wide and frequent variation of freq.Ø Perpetual oscillations in critical parameters due to Boiler response timeØ M/C subjected to cyclic loading and fatigue stressesØ Frequent HP/LP Bypass valve operationØ Continuous manual interventionsØ Self-defeating feature(Unloading when freq. improving towards 50 Hz)Ø Conflict with ABT(Offsetting freq. correction)TRANSIENTS IN GOVERNING SYSTEMn FAILURE OF POWER PACKS OF CONTROLLER RACKS IN EHC PANELn POWER SUPPLY FAILURE IN ATRS PANELn SIGNAL ACQUISITION PROBLEMn FAILURE IN TURBINE SYSTEMn ELECTRICAL SYSTEM FAILUREn COMPONENT FAILURE IN GOVERNING RACKn OPERATIONAL EMERGENCY1 CONTROL RACK SUPPLY FAILUREn M/C is on EHC. Power supply fails in Load control/Pressure control / transfer circuit rack. Starting device becomes off automatically due to EHC fault.Observation: EHC output is minimum/zero and load minimum/ zero with EHC fault alarm. Machine on bar with ESV & IV open (Turbine not tripped).Action: Confirm HP/LP bypass opening, isolate EHC from governing rack and parallely adjust starting device position from UCB. Reduce boiler firing to restrict rise in boiler pressure.2) SUPPLY FAILURE IN ATRS PANEL(ATRS=Automatic Turbine Rolling & Synchronisation)n M/C is on EHC. Power supply fails in CCA panels only.Observation: All indication lamps in ATRS consoles will go off. EHC output and Load will become zero due loss of GCB close feedback. All ATRS drives will become inoperative.Action: Confirm HP/LP bypass opening , isolate EHC. Reduce boiler firing. Adjust starting device position from local. Normalize power supply in CCA panels at the earliest.3) SIGNAL ACQUISITION PROBLEMn Loss of speed signal occurs due to Hall Probe / card failure.Observation: Speed indication will become zero. M/C will be loaded through speed controller. Subsequently Pressure controller will come in service. AOP & JOP will take auto start & Barring Gear valve Will open on auto.Action: Isolate EHC and adjust Starting device position. If pressure oil pressure is normal, make SLC of AOP, JOP and Barring Gear vlv OFF and stop AOP, JOP and close Barring Gear vlv.4)FAILURE IN TURBINE SYSTEMn Loss of speed signal occurs due to breakage of MOP shaft.Observation: Speed indication and pressure oil pressure will come down. M/C will be loaded through speed controller and Pressure controller will come in service. Subsequently, AOP & JOP will take auto start &Barring Gear valve. will open on auto.Action: Safe shutdown of M/C is to be ensured.5) ELECTRICAL SYSTEM FAILUREn M/C is on EHC with Tracking on. Starting device becomes inoperative due to Electrical module trouble/motor failure/overload.Observation: During increase in boiler firing, Boiler pressure will increase due to load restriction by Starting device. EHC output will go to 100%.Action: Switch off the electrical module of Starting device and increase Starting device position from local so that EHC can take control.6) FAILURE IN GOVRRNING RACKn EHC Plunger coil failuren EHC Pilot valve bearing failureObservation: EHC starts huntingAction: Isolate EHC and take Hydraulic mode in service. Replace the failed omponent. Governing characteristic checking should be done before EHC is put in servicen Speeder Gear spring tension gets altered.Observation: M/C may get unloaded at frequency lower than recommended value.Action: Speeder Gear spring tension may be adjusted to increase the start of unloading.Testing for proper setting should be checked during suitable opportunity.LOGICSA SPEED CONTROLLER LOGICS1 Command for slow rate at nr > 2850 RPM to facilitate easy synchronisation2 TSE Influence ON, when min of all the upper stress margins comes into picture to control gradient of nr lim and hence, acceleration of Rolling speed. Upper stress margin = 30 deg C => 10.0 V => 600 RPM ~ (Acceleration < 108 RPM ~ causes dn / dt tripping)B LOAD SET POINT GENERATION LOGICS1 Stopping of nr lim whena) GCB open ANDb) n act is < nr lim by approx. 45 RPM.This restricts hr nc up to around 30 % during Rolling to avoid wide v/v opening.2 Stopping speed set point control when,a) n act > 2850 RPM ANDb) nr raised ( I.e, nr > nr lim) ANDc) I) TSE ON and faulted in GCB open conditionOR ii) Stop command from SGC in SGC ON condition.3 Tracking in synchronized condition ifa) Frequency within limit (adjustable, say 48.5 to 51.5 Hz.) ANDb) Load controller O/P , hr PC > hr nc ANDc) I) Load controller (L C) in controlOR ii)Pressure controller in action4 Set Point Follow Up (Fast Calibration) duringa) Tracking condition 5 ( nr = n act + 21 RPM ) ORb) Turbine Trip ( nr = n act - 120 RPM ). Simultaneously nr lim immediately equals to nrCondition (a) ensures certain speed controller O/P during emergency to keep machine in rolled condition along with some load.Condition (b) ensures negative speed controller O/P during Trip condition.LOAD CONTROLLER (L C) IN CONTROL CONDITIONS -a) Speed OR Pressure Controller not in action ANDb) Isolated Grid condition absent ANDc) Both Load Controller OFF and Schedule OFF absent (I.e, L C ON)LOAD CONTROLLER SCHEDULE OFF - L C can be made OFF if Speed controller is in action and hrnc > hr PC. Otherwise, with OFF command OFF lamp blinks - called Schedule OFFC .LOAD SET POINT GENERATION LOGICS1TSE ON AND NOT FAULTEDThis helps to keep stress effect for gradient control in service.2-- LOAD GRADIENT ONThis helps to keep manual gradient control in service3-- STOP POWER SET POINT CONTROL whena) TSE ON and Faulted ORb) Stop command from SGC ORc) Pr raised when Pressure controller is in action with CMC ON OR Limit pressure mode selected OR Boiler follow mode selectedIn above conditions Pr lim stops, I.e,Set point can not be increased.4-- FAST CALIBRATION whena) Pressure controller is in action ORb) Follow above (h v0) condition presentUnder this condition MW error (ep) is selected and Pr lim immediately equals to Actual load (P act) without any gradient .5 -- FREQUENCY INFLUENCE ONThis is made ON from ATRS panel to put EXTERNAL FREQUENCY EFFECT in service forloading / unloading w.r.t. 50 Hz ( with 2.5 % to 8 % Frequency Droop)6 TSE TEST RELEASE : TSE TEST (For checking healthiness of TSE Margins) can be done whena) TSE Influence is OFF ORb) Both Pr, Pr lim and hr, hr lim are balanced, I.e, Speed and Power set point controls are not in action.D .LOAD CONTROLLER LOGICSFOLLOW ABOVE ( h v0 ) --a) GCB closed and load < 10 % (station load) ORb) GCB open ORc) Load controller OFFAbsence of these conditions help Load controller output to track above Pressure controller output when Pressure controller is in service.FOLLOW LOW ( h vu ) - GCB CLOSED AND Speed controller in action.This helps Load controller output to track below Speed controller output.8 -- Either a) Initial pressure mode selected ORb) Turbine follow mode in action ORc) CMC Runback activeThis ensures Load controller output above pressure controller output9 -- Load controller OFFThis defeats transmission of Load Controller output to Transfer circuit.R & L - Raise & Lower command from UCB :nr - Speed Reference :nr limit - Delayed Speed Reference :NLC - No Load Correction (Ensures required Speed controller O/P for Rolling even when Speed reference n r matches n act.)n act - Actual Speed :hr nc - Speed Controller O/P with DROOP of + / - 10.0 V for nr lim ~ n act = 150 RPM ( GAIN = 22LOAD SET POINT GENERATION CIRCUIT1 - SET POINT FOLLOW UP when Automatic Grid Control or CMC In service(Other Raise / Lower commands get blocked)2 -- TSE ENABLING whenA) GCB is closed ANDB) Load controller (L C) not OFF ANDC) Fast calibration signal 6 absent ANDD) I) Load controller (L C) in controlOR ii) Pressure controller with initial pressure in actionOR iii) Turbine follow mode in serviceThis helps to bring manually adjusted gradient and stress effect in service.+/- 10 V gradient => +/- 25 MW / MIN for 200 MW unitsOR +/- 50 MW / MIN for 500 MW units.PRESSURE CONTROLLER CIRCUITEHC TRANSFER CIRCUITFGMO - BACKGROUNDn Unique frequency band of 49.0 Hz to 50.5 Hz, as specified by IEGCn Scheduling & dispatch by RLDCs/SLDCs is based on day ahead demand & availabilityn Frequency control by load-generation balance in every 15 mins time blockn Wide frequency variation during Grid disturbance, Unit outage, change in demand, etc.n No primary response by generators to maintain frequency under such system contingencyn Emergencies caused due to frequency control only through importing /cutting load by system operatornFGMO - GRID CODESn All generating units should have their speed governors in normal operation at all times to enable Grid frequency control by loading / unloadingn Droop characteristic for primary response should be within 3% to 6%n Each unit shall be capable of instantaneously picking up at least 5% extra load for a minimum of 5 mins (up to 105%MCR), during fall in frequencyn No dead bands and/or time delays shall be deliberately introducedn Facilities like load limiters, CMC, etc. shall not be used to suppress the normal governor actionIMPLEMENTATION OF FGMOIn line with clause Clause 1.6 of IEGC and CERC order dated 30-10-99, date of FGMO implementation, as decided by REBs are :-n Western Region - 19-05-03 ( ABT - 01-07-02 )n Southern Region - 01-08-03 ( ABT - 01-01-03 )n Northern Region - 01-10-03 ( ABT - 01-12-02 )n Nor-East Region - 22-12-03 ( ABT - 01-11-03 )n Eastern Region - 02-01-04 ( ABT - 01-04-03 )FGMO CHARACTERISTIC FOR KWU M/CMAJOR ISSUES WITH FGMO IN 2004Ø Wide and frequent variation of freq.Ø Perpetual oscillations in critical parameters due to Boiler response timeØ M/C subjected to cyclic loading and fatigue stressesØ Frequent HP/LP Bypass valve operationØ Continuous manual interventionsØ Self-defeating feature(Unloading when freq. improving towards 50 Hz)Ø Conflict with ABT(Offsetting freq. correction)TRANSIENTS IN GOVERNING SYSTEMn FAILURE OF POWER PACKS OF CONTROLLER RACKS IN EHC PANELn POWER SUPPLY FAILURE IN ATRS PANELn SIGNAL ACQUISITION PROBLEMn FAILURE IN TURBINE SYSTEMn ELECTRICAL SYSTEM FAILUREn COMPONENT FAILURE IN GOVERNING RACKn OPERATIONAL EMERGENCY1 CONTROL RACK SUPPLY FAILUREn M/C is on EHC. Power supply fails in Load control/Pressure control / transfer circuit rack. Starting device becomes off automatically due to EHC fault.Observation: EHC output is minimum/zero and load minimum/ zero with EHC fault alarm. Machine on bar with ESV & IV open (Turbine not tripped).Action: Confirm HP/LP bypass opening, isolate EHC from governing rack and parallely adjust starting device position from UCB. Reduce boiler firing to restrict rise in boiler pressure.2) SUPPLY FAILURE IN ATRS PANEL(ATRS=Automatic Turbine Rolling & Synchronisation)n M/C is on EHC. Power supply fails in CCA panels only.Observation: All indication lamps in ATRS consoles will go off. EHC output and Load will become zero due loss of GCB close feedback. All ATRS drives will become inoperative.Action: Confirm HP/LP bypass opening , isolate EHC. Reduce boiler firing. Adjust starting device position from local. Normalize power supply in CCA panels at the earliest.3) SIGNAL ACQUISITION PROBLEMn Loss of speed signal occurs due to Hall Probe / card failure.Observation: Speed indication will become zero. M/C will be loaded through speed controller. Subsequently Pressure controller will come in service. AOP & JOP will take auto start & Barring Gear valve Will open on auto.Action: Isolate EHC and adjust Starting device position. If pressure oil pressure is normal, make SLC of AOP, JOP and Barring Gear vlv OFF and stop AOP, JOP and close Barring Gear vlv.4)FAILURE IN TURBINE SYSTEMn Loss of speed signal occurs due to breakage of MOP shaft.Observation: Speed indication and pressure oil pressure will come down. M/C will be loaded through speed controller and Pressure controller will come in service. Subsequently, AOP & JOP will take auto start &Barring Gear valve. will open on auto.Action: Safe shutdown of M/C is to be ensured.5) ELECTRICAL SYSTEM FAILUREn M/C is on EHC with Tracking on. Starting device becomes inoperative due to Electrical module trouble/motor failure/overload.Observation: During increase in boiler firing, Boiler pressure will increase due to load restriction by Starting device. EHC output will go to 100%.Action: Switch off the electrical module of Starting device and increase Starting device position from local so that EHC can take control.6) FAILURE IN GOVRRNING RACKn EHC Plunger coil failuren EHC Pilot valve bearing failureObservation: EHC starts huntingAction: Isolate EHC and take Hydraulic mode in service. Replace the failed omponent. Governing characteristic checking should be done before EHC is put in servicen Speeder Gear spring tension gets altered.Observation: M/C may get unloaded at frequency lower than recommended value.Action: Speeder Gear spring tension may be adjusted to increase the start of unloading.Testing for proper setting should be checked during suitable opportunity.LOGICSA SPEED CONTROLLER LOGICS1 Command for slow rate at nr > 2850 RPM to facilitate easy synchronisation2 TSE Influence ON, when min of all the upper stress margins comes into picture to control gradient of nr lim and hence, acceleration of Rolling speed. Upper stress margin = 30 deg C => 10.0 V => 600 RPM ~ (Acceleration < 108 RPM ~ causes dn / dt tripping)B LOAD SET POINT GENERATION LOGICS1 Stopping of nr lim whena) GCB open ANDb) n act is < nr lim by approx. 45 RPM.This restricts hr nc up to around 30 % during Rolling to avoid wide v/v opening.2 Stopping speed set point control when,a) n act > 2850 RPM ANDb) nr raised ( I.e, nr > nr lim) ANDc) I) TSE ON and faulted in GCB open conditionOR ii) Stop command from SGC in SGC ON condition.3 Tracking in synchronized condition ifa) Frequency within limit (adjustable, say 48.5 to 51.5 Hz.) ANDb) Load controller O/P , hr PC > hr nc ANDc) I) Load controller (L C) in controlOR ii)Pressure controller in action4 Set Point Follow Up (Fast Calibration) duringa) Tracking condition 5 ( nr = n act + 21 RPM ) ORb) Turbine Trip ( nr = n act - 120 RPM ). Simultaneously nr lim immediately equals to nrCondition (a) ensures certain speed controller O/P during emergency to keep machine in rolled condition along with some load.Condition (b) ensures negative speed controller O/P during Trip condition.LOAD CONTROLLER (L C) IN CONTROL CONDITIONS -a) Speed OR Pressure Controller not in action ANDb) Isolated Grid condition absent ANDc) Both Load Controller OFF and Schedule OFF absent (I.e, L C ON)LOAD CONTROLLER SCHEDULE OFF - L C can be made OFF if Speed controller is in action and hrnc > hr PC. Otherwise, with OFF command OFF lamp blinks - called Schedule OFFC .LOAD SET POINT GENERATION LOGICS1TSE ON AND NOT FAULTEDThis helps to keep stress effect for gradient control in service.2-- LOAD GRADIENT ONThis helps to keep manual gradient control in service3-- STOP POWER SET POINT CONTROL whena) TSE ON and Faulted ORb) Stop command from SGC ORc) Pr raised when Pressure controller is in action with CMC ON OR Limit pressure mode selected OR Boiler follow mode selectedIn above conditions Pr lim stops, I.e,Set point can not be increased.4-- FAST CALIBRATION whena) Pressure controller is in action ORb) Follow above (h v0) condition presentUnder this condition MW error (ep) is selected and Pr lim immediately equals to Actual load (P act) without any gradient .5 -- FREQUENCY INFLUENCE ONThis is made ON from ATRS panel to put EXTERNAL FREQUENCY EFFECT in service forloading / unloading w.r.t. 50 Hz ( with 2.5 % to 8 % Frequency Droop)6 TSE TEST RELEASE : TSE TEST (For checking healthiness of TSE Margins) can be done whena) TSE Influence is OFF ORb) Both Pr, Pr lim and hr, hr lim are balanced, I.e, Speed and Power set point controls are not in action.D .LOAD CONTROLLER LOGICSFOLLOW ABOVE ( h v0 ) --a) GCB closed and load < 10 % (station load) ORb) GCB open ORc) Load controller OFFAbsence of these conditions help Load controller output to track above Pressure controller output when Pressure controller is in service.FOLLOW LOW ( h vu ) - GCB CLOSED AND Speed controller in action.This helps Load controller output to track below Speed controller output.8 -- Either a) Initial pressure mode selected ORb) Turbine follow mode in action ORc) CMC Runback activeThis ensures Load controller output above pressure controller output9 -- Load controller OFFThis defeats transmission of Load Controller output to Transfer circuit.
What is the difference in astm f2413-05 and astm f2413-11?
F2413-05, the 05 stands for 2005. It was updated in 2011 so it is now Fs413-11
Is astm f2413 05 the same as ANSI?
The ASTM F2413-05 is the consensus standard that is accepted from OSHA for protective foot wear at the workplace. The ASTM F2413-05 replaced the ANSI z41.1 standard.
Is ASTM F2413-05 the same as ANSI?
The ASTM F2413-05 is the consensus standard that is accepted from OSHA for protective foot wear at the workplace. The ASTM F2413-05 replaced the ANSI z41.1 standard.
What is ASTM F2413?
ANSI Z41 - that was the standard for protective footwear has been replace by ASTM (American Society for Testing & Materials) F2412-05 (Testing methods for Protective Footwear) and F2413-05 (Minimum requirements for Protective Footwear). The latest addition/modification is ASTM F2413-11. The details of which can be purchased from ASTM website for USD 40- USD 48 with redline.
What is astm f2413-11?
ANSI Z41 - that was the standard for protective footwear has been replace by ASTM (American Society for Testing & Materials) F2412-05 (Testing methods for Protective Footwear) and F2413-05 (Minimum requirements for Protective Footwear). The latest addition/modification is ASTM F2413-11. The details of which can be purchased from ASTM website for USD 40- USD 48 with redline.
Is ASTM F2413-05 approved by OSHA?
OSHA does not approve standards, although it may incorporate some by reference.
What is the difference between ANSI steel toe and ASTM steel toes?
As of March 2005, ASTM F2413 standard superseded the ANSI Z41 standard. Manufacturers and distributors will implement a "running change" to their inventory from the ANSI Z41 labeled footwear. Because there is no change in the protocol, the ASTM F2413 standard does not require that the change from ANSI to ASTM labeled footwear occur in a specific time period.The protective footwear you choose must comply with the American Society for Testing and Materials (ASTM) standard F2413-05, formerly the American National Standards Institute's (ANSI) standard Z41-1999. The F2413-05 standard separates safety footwear into different categories such as Impact and Compression Resistance.ASTM F2413-05 - The letters F2413 reference the performance requirement for foot protection. The additional digits following the standard designation indicate the year of the standard to which the protective footwear complies, for example: 05 refers to 2005.M = Footwear designed for a male.F = Footwear designed for a female.I/75 = Impact rating of 75 (foot pounds)C/75 = Compression rating of 75 (2500 lbs. of pressure)The ASTM F2413 standard has two classifications for compression ratings 75 = 2,500 lbs and 50 = 1,750 lbs. This means the footwear has been tested to withstand compressive loads up to the designated number of pounds before the toe-cap will start to crush or crack.
WHAT IS DIfference between ANSI and ASTM F 2413-11?
ANSI is the American National Standards Institute. They coordinate the development of US Voluntary National Standards in private and public sectors with regards to information management and data communications. ASTM is the American Society for Testing and Materials. They develope, publish standards, definition of materials, methods for testing materials, installation practices and specifications for materials. Ok since ASTM develops the standards how does that affect OHSA standards to ANSI on safety ie.. Z87 stamp on safety glasses?
What is the difference between Dielectric footwear and Electrical hazard footwear?
Dielectric footwear meets ASTM F1117-03 (2008). This footwear is tested to 20,000v while wet. Electrical Hazard (EH) footwear meets ASTM F2413-05 or CAN/CSA-Z195-M92 Section 4.3 and is tested on the soles ONLY. EH is usually used for Low Voltages and in dry conditions. Dielectric can be used for higher voltages and in wet conditions. Usually near possible downed powerlines. These are always "secondary protection since they are not retested like D120 rubber insulating gloves. Dielectric tests in F1117 are performed on EACH shoe. F2413 is performed on a representative number and is a dry test. CAN/CSA-Z195-M92 Section 4.3 is a wet test.
What is astm f 2413 05?
Protective Footwear RequirementsDocument Number: 252Referenced in the Code of Federal Regulations (CFR) Title 29 are the Occupational Safety and Health Administration's (OSHA's) guidelines for Occupational Foot Protection (1910.136). This regulation refers to the American National Standards Institute (ANSI) American National Standard for Personal Protection - Protective Footwear (ANSI Z41) for its performance criteria. On March 1, 2005, ANSI Z41 was withdrawn and replaced by two new American Society of Testing Material (ASTM) International Standards. The new ASTM standards are F2412-05 Standard Test Methods for Foot Protection and F2413-05 Standard Specification for Performance Requirements for Foot Protection. This document provides an overview of the OSHA standard, the ANSI performance criteria and the ASTM performance requirements. Occupational Foot Protection According to 1910.136(a), "Each affected employee shall wear protective footwear when working in areas where there is a danger of foot injuries due to falling or rolling objects, or objects piercing the sole, and where such employee's feet are exposed to electrical hazards." Appendix B to subpart I identifies the following occupations for which foot protection should be routinely considered: shipping and receiving clerks, stock clerks, carpenters, electricians, machinists, mechanics and repairers, plumbers, assemblers, drywall installers and lathers, packers, wrappers, craters, punch and stamping press operators, sawyers, welders, laborers, freight handlers, gardeners and grounds keepers, timber cutting and logging workers, stock handlers and warehouse laborers. ASTM F2413-05 Requirements The ASTM F2413-05 standard covers minimum requirements for the design, performance, testing and classification of protective footwear. Footwear certified as meeting ASTM F2413-05 must first meet the requirements of Section 5.1 "Impact Resistant Footwear" and Section 5.2 "Compression Resistant Footwear". Then the requirements of additional sections such as metatarsal protection, conductive protection, electric shock protection, static dissipative protection and protection against punctures can be met. Protective footwear can meet all the requirements of the ASTM standard or specific elements of it, as long as it first meets the requirements for impact and compression resistance. All footwear manufactured to the ASTM specification must be marked with the specific portion of the standard with which it complies. One shoe of each pair must be clearly and legibly marked (stitched in, stamped on, pressure sensitive label, etc.) on either the surface of the tongue, gusset, shaft or quarter lining. The following is an example of an ASTM marking that may be found on protective footwear:ASTM F2413-05M I/75/C/75/Mt75PRCS Line #1: ASTM F2413-05: This line identifies the ASTM standard - it indicates that the protective footwear meets the performance requirements of ASTM F2413 issued in 2005. Line #2: M I/75 C/75 Mt75: This line identifies the gender [M (Male) or F (Female)] of the user. It also identifies the existence of impact resistance (I), the impact resistance rating (75 or 50 foot-pounds), compression resistance (C) and the compression resistance rating (75 or 50 which correlates to 2500 pounds. and 1750 pounds of compression respectively). The metatarsal designation (Mt) and rating (75 or 50 foot-pounds) is also identified. Lines 3 & 4: PR CS Lines 3 and 4 are used to identify footwear made to offer protection from other specific types of hazards referenced in the standard. They are used to designate conductive (Cd) properties, electrical insulation properties (EH), footwear designed to reduce the accumulation of excess static electricity (SD), puncture resistance (PR), chain saw cut resistance (CS) and dielectric insulation (DI), if applicable. Line 4 is only used when more than three sections of the ASTM standard apply. Conductive (Cd) footwear is intended to provide protection for the wearer against hazards that may result from static electricity buildup and to reduce the possibility of ignition of explosives or volatile chemicals. The footwear must facilitate electrical conductivity and the transfer of static electricity build up from the body to the ground. The electrical resistance must range between zero and 500,000 ohms. Electrical shock resistant (EH) footwear is manufactured with non-conductive electrical shock resistant soles and heals. The outsole is intended to provide a secondary source of electric shock resistance protection to the wearer against the hazards from an incidental contact with live electrical circuits, electrically energized conductors, parts or apparatus. It must be capable of withstanding the application of 14,000 volts at 60 hertz for one minute with no current flow or leakage current in excess of 3.0 milliamperes, under dry conditions. Static dissipative (SD) footwear is designed to provide protection against hazards that may exist due to excessively low footwear resistance, as well as maintain a sufficiently high level of resistance to reduce the possibility of electric shock. The footwear must have a lower limit of electrical resistance of 106 ohms and an upper limit of 108 ohms. Puncture resistant (PR) footwear is designed so that a puncture resistant plate is positioned between the insole and outsole. It is an integral and permanent part of the footwear. Devices constructed of metal must pass the ASTM B117 Practice for Operating Salt Spray (Fog Apparatus) corrosion resistance testing. The device must show no sign of corrosion after being exposed to a five percent salt solution for 24-hours. The puncture resistant footwear must show no signs of cracking after being subjected to 1.5 million flexes and have a minimum puncture resistance of 270 pounds. *Click here for puncture resistant Protecta Pac Boots #24258. Chain saw cut resistant (CS) footwear is designed to provide protection to the wearer's feet when operating a chain saw. It is intended to protect the foot area between the toe and lower leg. This footwear must meet the ASTM F1818 Specification for Foot Protection for Chainsaw Users standard. Dielectric insulation (DI) footwear is designed to provide additional insulation if accidental contact is made with energized electrical conductors, apparatus or circuits. It must meet the minimum insulation performance requirements of ASTM F1117 (Specification for Dielectric Footwear) and be tested in accordance with ASTM F1116 (Test Method for Determining Dielectric Strength of Dielectric Footwear). *Click here for SERVUS® Dielectric Boots and Overshoes #83388, #83389, and #83390.
What is astm f 2413-05?
Protective Footwear RequirementsDocument Number: 252Referenced in the Code of Federal Regulations (CFR) Title 29 are the Occupational Safety and Health Administration's (OSHA's) guidelines for Occupational Foot Protection (1910.136). This regulation refers to the American National Standards Institute (ANSI) American National Standard for Personal Protection - Protective Footwear (ANSI Z41) for its performance criteria. On March 1, 2005, ANSI Z41 was withdrawn and replaced by two new American Society of Testing Material (ASTM) International Standards. The new ASTM standards are F2412-05 Standard Test Methods for Foot Protection and F2413-05 Standard Specification for Performance Requirements for Foot Protection. This document provides an overview of the OSHA standard, the ANSI performance criteria and the ASTM performance requirements. Occupational Foot Protection According to 1910.136(a), "Each affected employee shall wear protective footwear when working in areas where there is a danger of foot injuries due to falling or rolling objects, or objects piercing the sole, and where such employee's feet are exposed to electrical hazards." Appendix B to subpart I identifies the following occupations for which foot protection should be routinely considered: shipping and receiving clerks, stock clerks, carpenters, electricians, machinists, mechanics and repairers, plumbers, assemblers, drywall installers and lathers, packers, wrappers, craters, punch and stamping press operators, sawyers, welders, laborers, freight handlers, gardeners and grounds keepers, timber cutting and logging workers, stock handlers and warehouse laborers. ASTM F2413-05 Requirements The ASTM F2413-05 standard covers minimum requirements for the design, performance, testing and classification of protective footwear. Footwear certified as meeting ASTM F2413-05 must first meet the requirements of Section 5.1 "Impact Resistant Footwear" and Section 5.2 "Compression Resistant Footwear". Then the requirements of additional sections such as metatarsal protection, conductive protection, electric shock protection, static dissipative protection and protection against punctures can be met. Protective footwear can meet all the requirements of the ASTM standard or specific elements of it, as long as it first meets the requirements for impact and compression resistance. All footwear manufactured to the ASTM specification must be marked with the specific portion of the standard with which it complies. One shoe of each pair must be clearly and legibly marked (stitched in, stamped on, pressure sensitive label, etc.) on either the surface of the tongue, gusset, shaft or quarter lining. The following is an example of an ASTM marking that may be found on protective footwear:ASTM F2413-05M I/75/C/75/Mt75PRCS Line #1: ASTM F2413-05: This line identifies the ASTM standard - it indicates that the protective footwear meets the performance requirements of ASTM F2413 issued in 2005. Line #2: M I/75 C/75 Mt75: This line identifies the gender [M (Male) or F (Female)] of the user. It also identifies the existence of impact resistance (I), the impact resistance rating (75 or 50 foot-pounds), compression resistance (C) and the compression resistance rating (75 or 50 which correlates to 2500 pounds. and 1750 pounds of compression respectively). The metatarsal designation (Mt) and rating (75 or 50 foot-pounds) is also identified. Lines 3 & 4: PR CS Lines 3 and 4 are used to identify footwear made to offer protection from other specific types of hazards referenced in the standard. They are used to designate conductive (Cd) properties, electrical insulation properties (EH), footwear designed to reduce the accumulation of excess static electricity (SD), puncture resistance (PR), chain saw cut resistance (CS) and dielectric insulation (DI), if applicable. Line 4 is only used when more than three sections of the ASTM standard apply. Conductive (Cd) footwear is intended to provide protection for the wearer against hazards that may result from static electricity buildup and to reduce the possibility of ignition of explosives or volatile chemicals. The footwear must facilitate electrical conductivity and the transfer of static electricity build up from the body to the ground. The electrical resistance must range between zero and 500,000 ohms. Electrical shock resistant (EH) footwear is manufactured with non-conductive electrical shock resistant soles and heals. The outsole is intended to provide a secondary source of electric shock resistance protection to the wearer against the hazards from an incidental contact with live electrical circuits, electrically energized conductors, parts or apparatus. It must be capable of withstanding the application of 14,000 volts at 60 hertz for one minute with no current flow or leakage current in excess of 3.0 milliamperes, under dry conditions. Static dissipative (SD) footwear is designed to provide protection against hazards that may exist due to excessively low footwear resistance, as well as maintain a sufficiently high level of resistance to reduce the possibility of electric shock. The footwear must have a lower limit of electrical resistance of 106 ohms and an upper limit of 108 ohms. Puncture resistant (PR) footwear is designed so that a puncture resistant plate is positioned between the insole and outsole. It is an integral and permanent part of the footwear. Devices constructed of metal must pass the ASTM B117 Practice for Operating Salt Spray (Fog Apparatus) corrosion resistance testing. The device must show no sign of corrosion after being exposed to a five percent salt solution for 24-hours. The puncture resistant footwear must show no signs of cracking after being subjected to 1.5 million flexes and have a minimum puncture resistance of 270 pounds. *Click here for puncture resistant Protecta Pac Boots #24258. Chain saw cut resistant (CS) footwear is designed to provide protection to the wearer's feet when operating a chain saw. It is intended to protect the foot area between the toe and lower leg. This footwear must meet the ASTM F1818 Specification for Foot Protection for Chainsaw Users standard. Dielectric insulation (DI) footwear is designed to provide additional insulation if accidental contact is made with energized electrical conductors, apparatus or circuits. It must meet the minimum insulation performance requirements of ASTM F1117 (Specification for Dielectric Footwear) and be tested in accordance with ASTM F1116 (Test Method for Determining Dielectric Strength of Dielectric Footwear). *Click here for SERVUS® Dielectric Boots and Overshoes #83388, #83389, and #83390.
What is a tenth more than 05?
if you mean .05, then a tenth is .1 so it is twice as large as .05.
