Source: http://lni.wa.gov/WISHA/Rules/commercialdiving/default.htm
Timestamp: 2013-05-26 06:42:29
Document Index: 799923882

Matched Legal Cases: ['art 46', '§ 296', '§ 296', '§ 296', '§ 296', '§ 296', '§ 296', '§ 1910', '§ 1910', '§ 296']

Chapter 296-37 For printing
296-37-510 Scope and application. 296-37-512 Variance and procedure. 296-37-515 Definitions. 296-37-520 Qualifications of dive team.
296-37-525 Medical requirements. 296-37-530 Safe practices manual. 296-37-535 Predive procedures. 296-37-540 Procedures during dive. 296-37-545 Postdive procedures. 296-37-550 Scuba diving. 296-37-555 Surface-supplied air diving. 296-37-560 Mixed-gas diving. 296-37-565 Liveboating.
296-37-570 Equipment. 296-37-575 Recordkeeping requirements.
296-37-585 Appendix A to chapter 296-37 WAC--Examples of conditions which may restrict or limit exposure to hyperbaric conditions.
296-37-590 Appendix B to chapter 296-37 WAC--Guidelines for scientific diving.
296-37-595 Appendix C to chapter 296-37 WAC--Alternative conditions under WAC 296-37-510(7) for recreational diving instructors and diving guides. WAC 296-37-510 Scope and application.
(1) The requirements included in this vertical chapter shall apply throughout the state wherever diving takes place within the jurisdiction of the department of Labor & Industries. These requirements shall also be applicable to those diving related and supportive work activities not at the diving site but which have a direct effect on the safety of the diving operations. Examples may include but are not limited to: The supply of breathing air or gas; the supply of materials, equipment or supplies required by this chapter; the maintenance of diving equipment.
(c) Governed by 45 CFR Part 46 (Protection of Human Subjects, United States Department of Health and Human Services) or equivalent rules or regulations established by another federal agency, which regulate research, development, or related purposes involving human subjects.
(a) Notifies the assistant director of the department of Labor & Industries in Olympia or the regional administrator for the region within 48 hours of the onset of the emergency situation indicating the nature of the emergency and extent of the deviation from the prescribed regulations; and
(7) Alternative requirements for recreational diving instructors and diving guides. Employers of recreational diving instructors and diving guides are not required to comply with the decompression-chamber requirements specified by WAC 296-37-545(2)(b)and (3)(c)(iii, and WAC 296-37-560(2)(a) when they meet all of the following conditions.
(a) The instructor or guide is engaging solely in recreational diving instruction or dive-guide operations;
(e) The employer or the instructor or guide is complying with all requirements of Appendix C of this subpart.
[Statutory Authority: RCW 49.17.010, .040, .050, and .060. 04-18-078 (Order 04-22), § 296-37-510, filed 08/31/04, effective 11/01/04. Statutory Authority: RCW 49.17.010, .040, and .050. 01-11-038, (Order 99-36), � 296-37-510, filed 05/09/01, effective 09/01/01. Statutory Authority: Chapter 49.17 RCW. 94-15-096 (Order 94-07), .� 296-37-510, filed 7/20/94, effective 9/20/94. Statutory Authority: Chapter 49.17 RCW and RCW 49.17.040, [49.17].050 and [49.17].060. 92-22-067 (Order 92-06), .� 296-37-510, filed 10/30/92, effective 12/8/92. Statutory Authority: RCW 49.17.040 and 49.17.050. 87-02-002 (Order 86-44), .� 296-37-510, filed 12/26/86; 81-07-048 (Order 81-4), .� 296-37-510, filed 3/17/81. Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-510, filed 10/2/78.]
WAC 296-37-512 Variance and procedure. Realizing that conditions may exist in operations under which certain state standards will not have practical application, the director of the department of Labor & Industries or his/her authorized representative may, pursuant to this section, RCW 49.17.080 and/or 49.17.090 and appropriate administrative rules of this state and the department of Labor & Industries and upon receipt of application and after adequate investigation by the department, permit a variation from these requirements when other means of providing an equivalent measure of protection are afforded. Such variation granted shall be limited to the particular case or cases covered in the application for variance and may be revoked for cause. The permit for variance shall be conspicuously posted on the premises and shall remain posted during the time it is in effect. All requests for variances from safety and health standards included in this or any other chapter of Title 296 WAC, shall be made in writing to the director of the department of Labor & Industries at Olympia, Washington, or his/her duly authorized representative, or the assistant director, Department of Labor & Industries, P.O. Box 44600, Olympia, Washington 98504-4600. Variance application forms may be obtained from the department upon request.
[Statutory Authority: Chapter 49.17 RCW. 94-15-096 (Order 94-07), 296-37-512, filed 7/20/94, effective 9/20/94. Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-512, filed 10/2/78.]
WAC 296-37-515 Definitions. As used in this standard, the listed terms are defined as follows:
(1) “Acfm”: Actual cubic feet per minute.
(2) “ASME Code or equivalent”: ASME (American Society of Mechanical Engineers) Boiler and Pressure Vessel Code, Section VIII, or an equivalent code which the employer can demonstrate to be equally effective.
(3) “ATA”: Atmosphere absolute.
(4) “Bell”: An enclosed compartment, pressurized (closed bell) or unpressurized (open bell), which allows the diver to be transported to and from the underwater work area and which may be used as a temporary refuge during diving operations.
(5) “Bottom time”: The total elapsed time measured in minutes from the time when the diver leaves the surface in descent to the time that the diver begins ascent.
(6) “Bursting pressure”: The pressure at which a pressure containment device would fail structurally.
(7) “Cylinder”: A pressure vessel for the storage of gases.
(8) “Recompression/decompression chamber”: A pressure vessel for human occupancy such as a surface decompression chamber, closed bell, or deep diving system used to decompress divers and to treat decompression sickness.
(9) “Decompression sickness”: A condition with a variety of symptoms which may result from gas or bubbles in the tissues of divers after pressure reduction.
(10) “Recompression/decompression table”: A profile or set of profiles of depth-time relationships for ascent rates and breathing mixtures to be followed after a specific depth-time exposure or exposures.
(11) “ Dive-guiding operation”: The leading of groups of trained sports divers, who use open-circuit, semiclosed-circuit, or closed-circuit SCUBA, to local undersea diving locations for recreational purposes.
(12) “Dive location”: A surface or vessel from which a diving operation is conducted.
(13) “Dive-location reserve breathing gas”: A supply system of air or mixed-gas (as appropriate) at the dive location which is independent of the primary supply system and sufficient to support divers during the planned decompression.
(14) “Dive team”: Divers and support employees involved in a diving operation, including the designated person-in-charge.
(15) “Diver”: An employee working in water using underwater apparatus which supplies compressed breathing gas at the ambient pressure.
(16) “Diver-carried reserve breathing gas”: A diver-carried supply of air or mixed gas (as appropriate) sufficient under standard operating conditions to allow the diver to reach the surface, or another source of breathing gas, or to be reached by a standby diver.
(17) “Diving mode”: A type of diving requiring specific equipment, procedures and techniques (SCUBA, surface-supplied air, or mixed gas).
(18) “Fsw”: Feet of seawater (or equivalent static pressure head).
(19) “Heavy gear”: Diver-worn deep-sea dress including helmet, breastplate, dry suit, weighted shoes.
(20) “Hyperbaric conditions”: Pressure conditions in excess of surface pressure.
(21) “Inwater stage”: A suspended underwater platform which supports a diver in the water.
(22) “Liveboating”: The practice of supporting a surfaced-supplied air or mixed gas diver from a vessel which is underway.
(23) “Mixed-gas diving”: A diving mode in which the diver is supplied in the water with a breathing gas other than air.
(24) “No-decompression limits”: The depth-time limits of the “no-decompression limits and repetitive dive group designation table for no-decompression air dives,” U.S. Navy Diving Manual or equivalent limits which the employer can demonstrate to be equally effective.
(25) “Psi(g)”: Pounds per square inch (gauge).
(26) “Recreational diving instruction”: The training of diving students in the use of recreational diving procedures and the safe operation of diving equipment, including open-circuit, semiclosed-circuit, or closed-circuit SCUBA during dives. (27) “Scientific diving” means diving performed solely as a necessary part of a scientific, research, or educational activity by employees whose sole purpose for diving is to perform scientific research tasks. Scientific diving does not include performing any tasks usually associated with commercial diving such as: Placing or removing heavy objects underwater; inspection of pipelines and similar objects; construction; demolition; cutting or welding; or the use of explosives.
(28) “SCUBA diving”: A diving mode independent of surface supply in which the diver uses open circuit self-contained underwater breathing apparatus.
(29) “Standby diver”: A diver at the dive location properly equipped and available to assist a diver in the water.
(30) “Surface-supplied air diving”: A diving mode in which the diver in the water is supplied from the dive location with compressed air for breathing.
(31) “Treatment table”: A depth-time and breathing gas profile designed to treat decompression sickness.
(32) “Umbilical”: The composite hose bundle between a dive location and a diver or bell, or between a diver and a bell, which supplies the diver or bell with breathing gas, communications, power, or heat as appropriate to the diving mode or conditions, and includes a safety line between the diver and the dive location.
(33) “Volume tank”: A pressure vessel connected to the outlet of a compressor and used as an air reservoir.
(34) “Working pressure”: The maximum pressure to which a pressure containment device may be exposed under standard operating conditions.
[Statutory Authority: RCW 49.17.010, .040, .050, and .060. 04-18-078 (Order 04-22), § 296-37-515, filed 08/31/04, effective 11/01/04. Statutory Authority: Chapter 49.17 RCW and RCW 49.17.040, [49.17].050 and [49.17].060. 92-22-067 (Order 92-06), .� 296-37-515, filed 10/30/92, effective 12/8/92. Statutory Authority: RCW 49.17.040 and 49.17.050. 87-02-002 (Order 86-44), .� 296-37-515, filed 12/26/86. Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-515, filed 10/2/78.]
WAC 296-37-520 Qualifications of dive team.
[Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-520, filed 10/2/78.]
WAC 296-37-525 Medical requirements.
1 To be given to the employee once, at age 35 or over.
[[Statutory Authority: RCW 49.19.010, .040, .050, and .060. 09-01-158 (Order 08-27), § 296-37-525, filed 12/23/08, effective 03/01/09. Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-525, filed 10/2/78.]
WAC 296-37-530 Safe practices manual.
[Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-530, filed 10/2/78.]
WAC 296-37-535 Predive procedures.
(8) Warning signal. When diving from surfaces other than vessels in areas capable of supporting marine traffic, a rigid replica of the international code flag “A” at least one meter in height shall be displayed at the dive location in a manner which allows all-round visibility, and shall be illuminated during night diving operations.
[Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-535, filed 10/2/78.]
WAC 296-37-540 Procedures during dive.
[Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), � 296-37-540, filed 10/2/78.]
WAC 296-37-545 Postdive procedures.
[Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), � 296-37-545, filed 10/2/78.]
WAC 296-37-550 Scuba diving.
[Statutory Authority: Chapter 49.17 RCW and RCW 49.17.040, [49.17].050 and [49.17].060. 92-22-067 (Order 92-06), .� 296-37-550, filed 10/30/92, effective 12/8/92. Statutory Authority: RCW 49.17.040 and 49.17.050. 81-07-048 (Order 81-4), � 296-37-550, filed 3/17/81. Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), � 296-37-550, filed 10/2/78.]
WAC 296-37-555 Surface-supplied air diving.
[Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-555, filed 10/2/78.]
WAC 296-37-560 Mixed-gas diving.
[Statutory Authority: Chapter 49.17 RCW and RCW 49.17.040, [49.17].050 and [49.17].060. 92-22-067 (Order 92-06), .� 296-37-560, filed 10/30/92, effective 12/8/92. Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-560, filed 10/2/78.]
WAC 296-37-565 Liveboating.
[Statutory Authority: Chapter 49.17 RCW and RCW 49.17.040, [49.17].050 and [49.17].060. 92-22-067 (Order 92-06), .� 296-37-565, filed 10/30/92, effective 12/8/92. Statutory Authority: RCW 49.17.040 and 49.17.050. 87-02-002 (Order 86-44), .� 296-37-565, filed 12/26/86. Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-565, filed 10/2/78.]
WAC 296-37-570 Equipment.
(i) A level of carbon monoxide (CO) greater than 20 ppm;
1 ATM.= 33 fsw or 15 Psi
2 ATM.= 66 fsw or 30 Psi
3 ATM.= 99 fsw or 45 Psi
4 ATM.= 132 fsw or 60 Psi
5 ATM.= 165 fsw or 75 Psi
6 ATM.= 198 fsw or 90 Psi
(d) Have shut-off valves recessed into the cylinder or protected by a cap, except when in use or manifolded, or when used for CUBA diving.
[Statutory Authority: RCW 49.17.010, .040, .050, and .060. 04-18-078 (Order 04-22), § 296-37-570, filed 08/31/04, effective 11/01/04.Statutory Authority: Chapter 49.17 RCW and RCW 49.17.040, [49.17].050 and [49.17].060. 92-22-067 (Order 92-06), .� 296-37-570, filed 10/30/92, effective 12/8/92. Statutory Authority: RCW 49.17.040 and 49.17.050. 87-02-002 (Order 86-44), .� 296-37-570, filed 12/26/86. Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-570, filed 10/2/78.]
WAC 296-37-575 Recordkeeping requirements.
(1) Recording and reporting.
(b) The employer shall record the occurrence of any diving-related injury or illness which requires any dive team member to be hospitalized, specifying the circumstances of the incident and the extent of any injuries or illnesses.
(a) Upon the request of the director of the department of Labor & Industries or his duly authorized designees, the employer shall make available for inspection and copying any record or document required by this standard.
[Statutory Authority: RCW 49.17.010, .040, .050, and .060. 08-05-012 (Order 07-44), § 296-37-575, filed 02/08/08, effective 04/01/08. Statutory Authority: RCW 49.17.010, .040, .050, and .060. 07-03-163 (Order 06-30), § 296-37-575, filed 01/24/07, effective 04/01/07. Statutory Authority: RCW 49.17.010, .040, and .050. 01-11-038 (Order 99-36), � 296-37-575, filed 05/09/01, effective 09/01/01. Statutory Authority: Chapter 49.17 RCW. 94-15-096 (Order 94-07), .� 296-37-575, filed 7/20/94, effective 9/20/94. Statutory Authority: Chapter 49.17 RCW and RCW 49.17.040, [49.17].050 and [49.17].060. 92-22-067 (Order 92-06), .� 296-37-575, filed 10/30/92, effective 12/8/92. Statutory Authority: RCW 49.17.040 and 49.17.050. 87-02-002 (Order 86-44), .� 296-37-575, filed 12/26/86. Statutory Authority: RCW 49.17.040, 49.17.050 and 49.17.240. 81-18-029 (Order 81-21), .� 296-37-575, filed 8/27/81. Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-575, filed 10/2/78.]
WAC 296-37-580 Reserved.
[Statutory Authority: Chapter 49.17 RCW and RCW 49.17.040, [49.17].050 and [49.17].060. 92-22-067 (Order 92-06), .� 296-37-580, filed 10/30/92, effective 12/8/92. Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-580, filed 10/2/78.]
WAC 296-37-585 Appendix A to chapter 296-37 WAC--Examples of conditions which may restrict or limit exposure to hyperbaric conditions.
[Statutory Authority: Chapter 49.17 RCW and RCW 49.17.040, [49.17].050 and [49.17].060. 92-22-067 (Order 92-06), .� 296-37-585, filed 10/30/92, effective 12/8/92. Statutory Authority: RCW 49.17.040, 49.17.050, 49.17.240, and chapters 42.30 and 43.22 RCW. 78-10-094 (Order 78-18), .� 296-37-585, filed 10/2/78.]
WAC 296-37-590 Appendix B to chapter 296-37 WAC--Guidelines for scientific diving. This appendix contains guidelines that will be used in conjunction with WAC 296-37-510 (2)(e) to determine those scientific diving programs which are exempt from the requirements for commercial diving. The guidelines are as follows:
[Statutory Authority: Chapter 49.17 RCW and RCW 49.17.040, [49.17].050 and [49.17].060. 92-22-067 (Order 92-06), .� 296-37-590, filed 10/30/92, effective 12/8/92.] WAC 296-37-595 Appendix C to chapter 296-37--Alternative conditions under WAC 296-37-510(7) for recreational diving instructors and diving guides.
WAC 296-37-510(7) specifies that an employer of recreational diving instructors and diving guides (hereafter, “divers” or “employees”) who complies with all of the conditions of this appendix need not provide a decompression chamber for these divers as required under WAC 296-37-545(2)(b) and (3)(c) or WAC 296-37-560(2)(a).
(a) The employer must ensure that each employee operates the rebreather (i.e., semiclosed-circuit and closed-circuit self-contained underwater breathing apparatuses (hereafter, “SCUBAs”)) according to the rebreather manufacturer’s instructions.
(b) The employer must ensure that each rebreather has a counterlung that supplies a sufficient volume of breathing gas to their divers to sustain the divers’ respiration rates, and contains a baffle system and/or other moisture separating system that keeps moisture from entering the scrubber.
(ii) Each employee uses the moisture trap according to the rebreather manufacturer’s instructions.
(i) The moisture sensor connects to a visual (e.g., digital, graphic, analog) or auditory (e.g., voice, pure tone) alarm that is readily detectable by the divers under the diving conditions in which the diver operates, and warns the diver of moisture in the breathing loop in sufficient time to terminate the dive and return safely to the surface; and
(ii) Each diver uses the moisture sensor according to the rebreather manufacturer’s instructions.
(e) The employer must ensure that each rebreather contains a continuously functioning CO2 sensor in the breathing loop , and that:
(f) Before each day’s diving operations, and more often when necessary, the employer must calibrate the CO2 sensor according to the sensor manufacturer’s instructions, and ensure that:
(ii) The equipment and procedures maintain this accuracy as required by the sensor manufacturer’s instructions; and
(ii) Removes CO2 from the diver’s exhaled gas; and
(ii) The employer fills the scrubber cartridges according to the rebreather manufacturer’s instructions;
(1) Before each day’s diving operations, and more often when necessary, the employer must ensure that the electrical power supply and electrical and electronic circuits in each rebreather are operating as required by the rebreather manufacturer’s instructions.
(c) Before each day’s diving operations, and more often when necessary, the employer must calibrate O2 sensors as required by the sensor manufacturer’s instructions. In doing so, the employer must:
(ii) Maintain this accuracy as required by the manufacturer of the calibration equipment; (iii) Ensure that the sensors are accurate to within 1% of the O2 fraction by volume;
(iv) Replace O2 sensors when the fail to meet the accuracy requirements specified in (c)(iii) of this subsection; and
(i) A gas-controlled package with electrically operated solenoid O2-supply valves;
(a) Is greater than the fraction O2 in compressed air (i.e., exceeds 22% by volume);
(i) Ensure that the exposure of each diver to partial pressures of O2 between 0.60 and 1.40 ATA does not exceed the 24-hour single-exposure time limits specified either by the 2001 National Oceanic and Atmospheric Administration Diving Manual (the 2001 NOAA Diving Manual), or by the report entitled Enriched Air Operations and Resource Guide published in 1995 by the Professional Association of Diving Instructors (known commonly as the “1995 DSAT Oxygen Exposure Table”); and
(ii) Determine a diver’s O2-exposure duration using the diver’s maximum O2 exposure (partial pressure of O2 ) during the dive and the total dive time (i.e., from the time the diver leaves the surface until the diver returns to the surface).
(a) The employer must ensure that: (i) Properly trained personnel mix nitrox-breathing gases, and that nitrogen is the only inert gas used in the breathing-gas mixture; and
(b) Before the start of each day’s diving operations, the employer must determine the O2 fraction of the breathing-gas mixture using an O2 analyzer. In doing so, the employer must:
(c) When the breathing gas is a commercially supplied nitrox breathing-gas mixture, the employer must ensure that the O2 meets the medical USP specifications (Type I, Quality Verification Level A) or aviator’s breathing-oxygen specifications (Type I, Quality Verification Level E) of CGA G-4.3-2000 (Commodity Specification for Oxygen). In addition, the commercial supplier must:
(i) Compressor manufacturer must provide the employer with documentation that the compressor is suitable for mixing high-pressure air with the highest O2 fraction used in the nitrox breathing-gas mixture when operated according to the manufacturer’s operating and maintenance specifications;
(ii) Compressor manufacturer must provide the employer with documentation that the compressor is suitable for mixing the high-pressure air with the highest O2 fraction used in the nitrox breathing-gas mixture when operated according to the manufacturer’s operating and maintenance specifications;
(iv) The filter-system manufacturer must provide the employer with documentation that the filter system used for this purpose is suitable for producing O2-compatible air when operated according to the manufacturer’s operating and maintenance specifications; and
(a) Regardless of the type of diving equipment used by a diver (i.e., open-circuit SCUBA or rebreathers), the employer must ensure that the equipment contains (or incorporates) an open-circuit emergency-egress system (a “bail-out” system) in which the second stage of the regulator connects to a separate supply of emergency breathing gas, and the emergency breathing gas consists of air or the same nitrox breathing-gas mixture used during the dive.
(b) As an alternative to the “bail-out” system specified in (a) of this subsection, the employer may use:
(a) Before each day’s diving operations, the employer must:
(i) The equipment delivers medical-grade O2 that meets the requirements for medical USP oxygen (Type I, Quality Verification Level A) of CGA G-4.3-2000 (Commodity Specification for Oyxgen);
(ii) The equipment delivers this O2 to a transparent mask that covers the injured diver’s nose and mouth; and
(c) Before each day’s diving operations, the employer must:
(a) Before starting each day’s diving operations, the employer must:
(i) Designate an employee or nonemployee to make entries in a diving log; and
(i) Ensure that the diving log conforms to the requirements specified in paragraph (d) (Record of dive) of § 1910.423; and (ii) Maintain a record of the dive according to § 1910.440 (Recordkeeping requirements).
(c) The employer must ensure that a hard copy of the no-decompression tables used from the dives (as specified in subsection (6)(a) of this section) is readily available at the dive site, whether or not the divers use dive-decompression computers.
(11) Testing protocol for determining CO2 limits of rebreather canisters.
(a) The employer must ensure that the rebreather manufacturer has used the following procedures for determining that the CO2-sorbent material meets the specifications of the sorbent material’s manufacturer:
(ii) The RoTap shaker and nested-sieves test:
(iii) The Navy Experimental Diving Unit (NEDU)-derived Schlegal test; and
(iii) Measurement of the O2 concentration of the inhalation breathing gas delivered to the mouthpiece:
Table I--Canister Testing Parameters
Ventilation rates (Lpm, ATPS(1)) Breathing machine tidal volumes(L)
Breathing machine frequencies (breaths per min.)
CO2 injection rates(Lpm, STPD(2))
(1) ATPS means ambient temperature and pressure, saturated with water.
(2) STPD means standard temperature and pressure, dry; the standard temperature is 32 degrees F (0 degrees C).
(viii) Monitoring of the breathing-gas temperature at the rebreather mouthpiece (at the “chrome T” connector) and ensuring that this temperature conforms to the temperature of a diver’s exhaled breath at the water temperature and ventilation rate used during the initial testing trail;(1)
(xiv) Derivation of replacement schedules only by interpolating among, but not extrapolating beyond, the depth, water temperatures, and exercise levels used during canister testing. [Statutory Authority: RCW 49.17.010, .040, .050, and .060. 04-18-078 (Order 04-22), § 296-37-595, filed 08/31/04, effective 11/01/04.]