ANSI Z136.1-CDV Status on Updates for Next Revision & Work by TSC-4 Committee on Control Measures and Training

Transcription

1 ANSI Z136.1-CDV Status on Updates for Next Revision & Work by TSC-4 Committee on Control Measures and Training

2 American National Standard Z136 Series Z136.1 for Safe Use of Lasers Z136.3 Z136.4 Z136.5 Z136.6 Z136.7 Health Care Facilities Measurements Educational Institutions Outdoors Laser Protective Equipment

3 The Newest Member of the ANSI Z136 Series ANSI Z136.8 (2012) Safe Use of Lasers in Research, Development or Testing

4 DRAFT Standards Z136.1 for Safe Use of Lasers Z136.9 Manufacturing Z Entertainment, Displays & Exhibitions

5 SSC-1 CDV (June 2012)

6 Changes Throughout Document Units changed to nanometers for all wavelengths shorter than 2,999 nm (180 nm to 2,999 nm) and microns for longer wavelengths (3 µm to 1,000 μm). Tables within the text of the document have been renumbered with a dash (e.g. Table 1-1 is the first table in Section 1). Tables after the normative text portion are now numbered Tables 1-11.

7 Section 1: General Statement that vertical standards take precedence over this document (within the scope of that standard). Section 2: Definitions Added some new definitions, for example: Laser Controlled Area (LCA) Engineering control measure Deleted some definitions, for example: Scintillation Dot 6 Dot 1

8 Section 3: Hazard Evaluation and Classification Included optics transmission in hazard classification of lasers (explicitly done by including them in Section (2) and Table 9)

9 Section 4: Control Measures Section completely re-written and re-arranged Use of laser eye protection for Class 3B is proposed as required (shall) instead of advisory (should) see Section and Table 10c Proposed change to the time base for LEP selection (recommendation) to be 100 seconds for UV intrabeam exposures (see Table 2) Changes in signage to really be Z535.2 compliant

10 Section 4: Control Measures Hierarchy of control measures: Engineering controls Administrative controls PPE (PPE was treated partially as an administrative control in 2007 edition)

11 Section 4: Control Measures Emphasizes that most engineering controls should have been instituted by the manufacturer of the laser product under the FLPPS so that user will seldom need to apply additional engineering controls or labels on laser products. ANSI Z136 engineering controls are generally relevant to systems developed or modified for in-house use only.

12 2007 Section 4: Control Measures 4.1 General Considerations 4.2 Subst. Alternate Controls 201x Section 4: Control Measures Engineering Controls 4.1 General Considerations 4.2 Subst. Alternate Controls Administrative Controls Personal Protective Equipment

13 2007 Section 4: Control Measures 4.3 Engineering Controls 4.4 Admin/Proc. Controls 4.5 Spec. Considerations 4.6 Protective Equipment 4.7 Area Warning Signs & Labels 201x Section 4: Control Measures 4.3 Manufacturer Control Measures (note this section is now only one paragraph in the CDV) 4.4 User Control Measures General Engineering Controls (note for internal systems only) Administrative Controls PPE 4.5 Special Considerations 4.6 LCA Warning Signs & Equipment Labels

14 Section Indoor Laser Controlled Area Basically the same area requirements as in 2007 edition for Class 3B/4 Change: Now includes Temporary Laser Controlled Area, that is, the same control measures apply whether the LCA is normally Class 3B/4 or if Class 3B/4 conditions exist only temporarily.

15 Section 4.6: LCA Warning Signs & Equipment Labels: Now ANSI Z535.2 Compliant DANGER Signs. Extremely high power or high pulse energy Class 4 with exposed beams WARNING Signs. Class 3R, 3B, and most Class CAUTION Signs. Class 2, 2M Three panel design, can be portrait instead of landscape format as shown

16 Section 4.6: LCA Warning Signs & Equipment Labels: Now ANSI Z535.2 Compliant (NOTICE Sign) This signal word shall not be associated directly with a hazard or hazardous situation and must not be used in place of DANGER or CAUTION. ANSI Z535.2 Can be used in conjunction with Laser Controlled Area sign ( DANGER or WARNING ) (ANSI Z version)

17 Section 5: Education and Training No significant changes Section 6: Medical Examinations Significant portions of text removed and clarified (both text and appendix) Section 7: Non-Beam Hazards Section completely rewritten

18 Section 7: Non-Beam Hazard (NBH) More clearly defines what is (and is not) a NBH: Non-Beam Hazards (NBH): All hazards arising from the presence of a laser system, excluding direct human exposure to direct or scattered laser radiation. Resolves previous internal consistency issues (e.g. clarifies collateral versus laser target interaction radiation) Reorganized to streamline, eliminate redundancy, etc. Addresses emerging hazards (e.g. nano, fiber particles) Added useful tools (e.g. Irradiance Dependence Table)

19 Section 8: Criteria for Exposures of Eye and Skin Changes to MPEs Previous Tables 5a & 5b (Ocular MPEs) become Tables 5a-5f Previous Table 6 (Parameters and Correction Factors) becomes Tables 6a-6c t min (thermal confinement time) is reduced α max (angular subtense) is time dependent C P (multiple pulse reduction factor) depends on both α and number of pulses Table 7 (Skin MPEs) becomes Tables 7a-7c

20 For Further Information: See the abstract of Schulmeister, Karl; Stuck, Bruce E.; Lund, David J.; Sliney, David H, Review of Thresholds and Recommendations for Revised Exposure Limits for Laser and Optical Radiation for Thermally Induced Retinal Injury, Health Phys 100(2), (2011).

21 Changes to NIR MPEs

22 Section 9: Measurements - No significant changes Tables: - Renumbered and updated - Separate tables for Engineering, Administrative, and PPE control measures

23 Appendices: Appendix B Calculations for Hazard Evaluation and Classification updated to reflect changes in standard Appendix C Hazard Evaluation, Classification and Control Measures Now called Selected AELs and MPEs Alternate labeling moved to Appendix D Laser protection damage threshold moved to Appendix D

24 Appendices: New Appendix D: Information on Laser Products and Control Measures Laser product requirements Alternate signage and labeling ( grandfather clause ) Laser protection damage threshold evaluation (formerly in Appendix C) Appendix E : Guide for Organization and Implementation of Employee Laser Safety Training Programs - Essentially the same as previous Appendix D)

25 Appendices: Appendix E Medical Examinations restructured Appendix F Non-Beam Hazards reduced to informative material on LGACs other general NBH content relocated to Section 7 Appendix G Biological Effects of the Eye and Skin updated

26 Thank you