Safety in the use of radiofrequency dielectric heaters and sealers a practical guide
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| Format: | Buch |
|---|---|
| Sprache: | English |
| Veröffentlicht: |
Geneva
Internat. Labour Office
1998
|
| Ausgabe: | 1. publ. |
| Schriftenreihe: | Occupational safety and health series
71 |
| Schlagworte: | |
| Online-Zugang: | Inhaltsverzeichnis |
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| 245 | 1 | 0 | |a Safety in the use of radiofrequency dielectric heaters and sealers |b a practical guide |c prep. by the International Commission on Non-ionizing Protection ... |
| 250 | |a 1. publ. | ||
| 264 | 1 | |a Geneva |b Internat. Labour Office |c 1998 | |
| 300 | |a IX, 71 S. |b Ill., graph. Darst. | ||
| 336 | |b txt |2 rdacontent | ||
| 337 | |b n |2 rdamedia | ||
| 338 | |b nc |2 rdacarrier | ||
| 490 | 1 | |a Occupational safety and health series |v 71 | |
| 650 | 7 | |a Blootstelling |2 gtt | |
| 650 | 7 | |a Champ électromagnétique |2 rasuqam | |
| 650 | 4 | |a Champs électromagnétiques - Aspect sanitaire | |
| 650 | 7 | |a Diélectrique |2 rasuqam | |
| 650 | 7 | |a Elektromagnetische straling |2 gtt | |
| 650 | 7 | |a Mesures de sécurité |2 rasuqam | |
| 650 | 7 | |a Radiofréquence |2 rasuqam | |
| 650 | 7 | |a Sécurité au travail |2 rasuqam | |
| 650 | 4 | |a Sécurité du travail | |
| 650 | 7 | |a Veiligheidsmaatregelen |2 gtt | |
| 650 | 4 | |a Electricity |x adverse effects | |
| 650 | 4 | |a Electromagnetic fields |x Health aspects | |
| 650 | 4 | |a Industrial safety | |
| 650 | 4 | |a Radiation, Nonionizing |x adverse effects | |
| 655 | 7 | |a Guide (Descripteur de forme) |2 rasuqam | |
| 830 | 0 | |a Occupational safety and health series |v 71 |w (DE-604)BV002800887 |9 71 | |
| 856 | 4 | 2 | |m HBZ Datenaustausch |q application/pdf |u http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=008790747&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |3 Inhaltsverzeichnis |
| 943 | 1 | |a oai:aleph.bib-bvb.de:BVB01-008790747 | |
Datensatz im Suchindex
| _version_ | 1819598062789591040 |
|---|---|
| adam_text | Contents
Preface v
1. Introduction 1
2. Sources 2
3. Radiofrequency radiation 5
3.1. Electromagnetic radiation 5
3.2. Quantities and units of exposure 7
4. Exposure and energy absorption 8
5. Radiofrequency biological effects 11
5.1. Whole body response 11
5.2. Localized responses 12
5.2.1. Reproductive system 12
5.2.2. Teratogenic effects 12
5.2.3. Effects on the eye 13
5.2.4. RF burns and operator hand numbness 14
5.2.5. Carcinogenesis 14
5.3. Conclusion 15
6. Occupational exposure standards and guidelines 16
6.1. ICNIRP guidelines 17
7. Exposure assessment 18
7.1. Measurement of RF fields 18
7.2. Measurement of induced currents 19
8. Control technology and radiation protection programme 21
8.1. General obligations and duties 21
8.1.1. Role of competent authorities 21
8.1.2. Responsibility of the employer 21
8.1.3. Duties of the worker (user) 22
8.1.4. Responsibility of manufacturers 22
8.2. Work practice controls 23
8.2.1. Maintenance procedures 23
8.2.2. Operator procedures 23
8.2.3. Identification of RF hazard areas 24
8.3. Design and installation considerations 25
8.3.1. Shielding 25
8.3.2. Installation details 27
8.3.2.1. Installations near pipes 27
8.3.2.2. Grounding 31
8.4. Medical surveillance 32
8.4.1 Normal conditions 32
8.4.2 Abnormal conditions 32
Appendix A. Shield theory, design and construction 33
1. Basic principles 33
Current paths 36
Resistance 38
2. Shielding design and construction 40
Characteristics and selection of shielding materials 40
Joints 41
Ports or slot openings in shielding 42
Doors and removable panels 44
Vestibules (shielding tunnels) 47
High frequency power connections 51
3. Summary of control technology 52
Appendix B. Radiofrequency characteristics of capacitors and inductors
and implications for shielding 53
Capacitors 53
Inductors 54
Appendix C. Resonant conductors and waveguides: Applications to shielding 57
Resonant conductors 57
Waveguides 58
Appendix D. Effects of ground planes and reflectors on operator exposures 59
References 63
List of figures
1. Schematic diagram of a radiofrequency sealer 2
2. The electromagnetic spectrum 5
3. Whole body averaged energy absorption rate 9
4. Unshielded and shielded RF heater used in the study 26
5. RF energy coupling to pipes 28
6. Method to prevent the coupling of RF radiation to pipes 29
7. Clamp installed around pipe and connected to the cabinet to inhibit currents 29
8. Square copper duct 30
9. RF energy leak 31
A 1 General principle of shielding 34
A 2 Cross section of the shielding cabinet 35
A 3 Effects on current distribution of different orientation of openings 37
A 4 Slot openings parallel to current paths improve shielding
compared to non parallel slots 42
A 5 Perforated metal plate across wide opening as part of shielding 43
A 6 Current paths across a perforated metal sheet 43
A 7 Contact strips between removable panel and fixed part of the cabinet 44
A 8 Contact strips for frequently used sliding door 46
A 9 Current flow in a shield opening with a vestibule 47
A 10 Current flow in a shield opening without a vestibule 48
A 11 Principle of a short vestibule 49
D 1 Workplace exposure situations when using RF heaters 60
D 2 RF absorption for grounded and ungrounded operators 61
List of tables
1. ICNIRP occupational exposure limits to radiofrequency fields 17
2. Conductivity, skin depth and resistance per unit surface area of materials 39
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| dewey-full | 363.179 |
| dewey-hundreds | 300 - Social sciences |
| dewey-ones | 363 - Other social problems and services |
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| dewey-sort | 3363.179 |
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| discipline | Soziologie |
| edition | 1. publ. |
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| genre | Guide (Descripteur de forme) rasuqam |
| genre_facet | Guide (Descripteur de forme) |
| id | DE-604.BV012914112 |
| illustrated | Illustrated |
| indexdate | 2024-12-23T15:15:42Z |
| institution | BVB |
| isbn | 9221103331 |
| language | English |
| oai_aleph_id | oai:aleph.bib-bvb.de:BVB01-008790747 |
| oclc_num | 37493746 |
| open_access_boolean | |
| owner | DE-12 |
| owner_facet | DE-12 |
| physical | IX, 71 S. Ill., graph. Darst. |
| publishDate | 1998 |
| publishDateSearch | 1998 |
| publishDateSort | 1998 |
| publisher | Internat. Labour Office |
| record_format | marc |
| series | Occupational safety and health series |
| series2 | Occupational safety and health series |
| spellingShingle | Safety in the use of radiofrequency dielectric heaters and sealers a practical guide Occupational safety and health series Blootstelling gtt Champ électromagnétique rasuqam Champs électromagnétiques - Aspect sanitaire Diélectrique rasuqam Elektromagnetische straling gtt Mesures de sécurité rasuqam Radiofréquence rasuqam Sécurité au travail rasuqam Sécurité du travail Veiligheidsmaatregelen gtt Electricity adverse effects Electromagnetic fields Health aspects Industrial safety Radiation, Nonionizing adverse effects |
| title | Safety in the use of radiofrequency dielectric heaters and sealers a practical guide |
| title_auth | Safety in the use of radiofrequency dielectric heaters and sealers a practical guide |
| title_exact_search | Safety in the use of radiofrequency dielectric heaters and sealers a practical guide |
| title_full | Safety in the use of radiofrequency dielectric heaters and sealers a practical guide prep. by the International Commission on Non-ionizing Protection ... |
| title_fullStr | Safety in the use of radiofrequency dielectric heaters and sealers a practical guide prep. by the International Commission on Non-ionizing Protection ... |
| title_full_unstemmed | Safety in the use of radiofrequency dielectric heaters and sealers a practical guide prep. by the International Commission on Non-ionizing Protection ... |
| title_short | Safety in the use of radiofrequency dielectric heaters and sealers |
| title_sort | safety in the use of radiofrequency dielectric heaters and sealers a practical guide |
| title_sub | a practical guide |
| topic | Blootstelling gtt Champ électromagnétique rasuqam Champs électromagnétiques - Aspect sanitaire Diélectrique rasuqam Elektromagnetische straling gtt Mesures de sécurité rasuqam Radiofréquence rasuqam Sécurité au travail rasuqam Sécurité du travail Veiligheidsmaatregelen gtt Electricity adverse effects Electromagnetic fields Health aspects Industrial safety Radiation, Nonionizing adverse effects |
| topic_facet | Blootstelling Champ électromagnétique Champs électromagnétiques - Aspect sanitaire Diélectrique Elektromagnetische straling Mesures de sécurité Radiofréquence Sécurité au travail Sécurité du travail Veiligheidsmaatregelen Electricity adverse effects Electromagnetic fields Health aspects Industrial safety Radiation, Nonionizing adverse effects Guide (Descripteur de forme) |
| url | http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&local_base=BVB01&doc_number=008790747&sequence=000002&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA |
| volume_link | (DE-604)BV002800887 |