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(f) Decompression chambers. (1) Each decompression chamber manufactured after the effective date of this standard, shall be built and maintained in accordance with the ASME Code or equivalent.

(2) Each decompression chamber manufactured prior to the effective date of this standard shall be maintained in conformity with the code requirements to which it was built, or equivalent.

(3) Each decompression chamber shall be equipped with:

(1) Means to maintain the atmosphere below a level of 25 percent oxygen by volume;

(ii) Mufflers on intake and exhaust lines, which shall be regularly inspected and maintained;

(iii) Suction guards on exhaust line openings; and

(iv) A means for extinguishing fire, and shall be maintained to minimize sources of ignition and combustible material.

(g) Gauges and timekeeping devices. (1) Gauges indicating diver depth which can be read at the dive location shall be used for all dives except SCUBA.

(2) Each depth gauge shall be deadweight tested or calibrated against a master reference gauge every 6 months, and when there is a discrepancy greater than two percent (2 percent) of full scale between any two equivalent gauges.

(3) A cylinder pressure gauge capable of being monitored by the diver during the dive shall be worn by each SCUBA diver.

(4) A timekeeping device shall be available at each dive location.

(h) Masks and helmets. (1) Surfacesupplied air and mixed-gas masks and helmets shall have:

(i) A non-return valve at the attachment point between helmet or mask and hose which shall close readily and positively; and

(ii) An exhaust valve.

(2) Surface-supplied air masks and helmets shall have a minimum ventilation rate capability of 4.5 acfm at any depth at which they are operated or the capability of maintaining the diver's inspired carbon dioxide partial pressure below 0.02 ATA when the

diver is producing carbon dioxide at the rate of 1.6 standard liters per minute.

(i) Oxygen safety. (1) Equipment used with oxygen or mixtures containing over forty percent (40%) by volume oxygen shall be designed for oxygen service.

(2) Components (except umbilicals) exposed to oxygen or mixtures containing over forty percent (40%) by volume oxygen shall be cleaned of flammable materials before use.

(3) Oxygen systems over 125 psig and compressed air systems over 500 psig shall have slow-opening shut-off valves.

(j) Weights and harnesses. (1) Except when heavy gear is worn, divers shall be equipped with a weight belt or assembly capable of quick release.

(2) Except when heavy gear is worn or in SCUBA diving, each diver shall wear a safety harness with:

(i) A positive buckling device;

(ii) An attachment point for the umbilical to prevent strain on the mask or helmet; and

(iii) A lifting point to distribute the pull force of the line over the diver's body. (The information collection requirements contained in paragraph (a)(2) were approved by the Office of Management and Budget under control number 1218-0069) (39 FR 23502, June 27, 1974, as amended at 49 FR 18295, Apr. 30, 1984; 51 FR 33033, Sept. 18, 1986)

RECORDKEEPING

of

8 1910.440 Recordkeeping requirements.

(a)(1) (Reserved)

(2) The employer shall record the occurrence

any diving-related injury or illness which requires any dive team member to be hospitalized for 24 hours or more, specifying the circumstances of the incident and the extent of any injuries or illnesses.

(b) Availability of records. (1) Upon the request of the Assistant Secretary of Labor for Occupational Safety and Health, or the Director, National Institute for Occupational Safety and Health, Department of Health, Education and Welfare of their designees, the employer shall make available for (5) In the event the employer ceases to do business:

(1) The successor employer shall receive and retain all dive and employee medical records required by this standard; or

(ii) If there is no successor employer, dive and employee medical records shall be forwarded to the National Institute for Occupational Safety and Health, Department of Health, Education, and Welfare. (Approved by the Office of Management and Budget under control number 12180058) (42 FR 37668, July 22, 1977, as amended at 45 FR 35281, May 23, 1980; 47 FR 14706, Apr. 6, 1982; 51 FR 34562, Sept. 29, 1986)

8 1910.441 Effective date.

This standard shall be effective on October 20, 1977, except that for provisions where decompression chambers or bells are required and such equipment is not yet available, employers shall comply as soon as possible thereafter but in no case later than 6 months after the effective date of the standard.

inspection and copying any record or document required by this standard.

(2) Records and documents required by this standard shall be provided upon request to employees, designated representatives, and the Assistant Secretary in accordance with 29 CFR 1910.20 (a)-(e) and (g)-(i). Safe practices manuals (8 1910.420), depth-time profiles (f 1910.422), recordings of dives (f 1910.423), decompression procedure assessment evaluations (f 1910.423), and records of hospitalizations (f 1910.440) shall be provided in the same manner as employee exposure records or analyses using exposure or medical records. Equipment inspections and testing records which pertain to employees ($ 1910.430) shall also be provided upon request to employees and their designated representatives.

(3) Records and documents required by this standard shall be retained by the employer for the following period:

(i) Dive team member medical records (physician's reports) (8 1910.411)—5 years;

(ii) Safe practices manual ($ 1910.420)-current document only;

(iii) Depth-time profile ($ 1910.422)— until completion of the recording of dive, or until completion of decompression procedure assessment where there has been an incident of decompression sickness;

(iv) Recording of dive (§ 1910.423)—1 year, except 5 years where there has been an incident of decompression sickness;

(v) Decompression procedure assessment evaluations (f 1910.423)—5 years;

(vi) Equipment inspections and testing records ($ 1910.430)—current entry or tag, or until equipment is withdrawn from service;

(vii) Records of hospitalizations (f 1910.440)—5 years.

(4) After the expiration of the retention period of any record required to be kept for five (5) years, the employer shall forward such records to the National Institute for Occupational Safety and Health, Department of Health and Human Services. The employer shall also comply with any additional requirements set forth at 29 CFR 1910.20(h).

APPENDIX A TO SUBPART T-EXAMPLES

OF CONDITIONS WHICH MAY RE-
STRICT OR LIMIT EXPOSURE TO Hy-
PERBARIC CONDITIONS

The following disorders may restrict or limit occupational exposure to hyperbaric conditions depending on severity, presence of residual effects, response to therapy, number of occurrences, diving mode, or degree and duration of isolation.

History of seizure disorder other than early febrile convulsions.

Malignancies (active) unless treated and without recurrence for 5 yrs.

Chronic inability to equalize sinus and/or middle ear pressure.

Cystic or cavitary disease of the lungs.

Impaired organ function caused by alcohol or drug use.

Conditions requiring continuous medication for control (e.g., antihistamines, steroids, barbiturates, moodaltering drugs, or insulin).

Meniere's disease.
Hemoglobinopathies.
Obstructive or restrictive lung disease.
Vestibular end organ destruction.
Pneumothorax.

Cardiac abnormalities (e.g., pathological heart block, valvular disease, intraventricu. lar conduction defects other than isolated right bundle branch block, angina pectoris, arrhythmia, coronary artery disease).

Juxta-articular osteonecrosis.

2. The purpose of the project using scientific diving is the advancement of science; therefore, information and data resulting from the project are non-proprietary.

3. The tasks of a scientific diver are those of an observer and data gatherer. Construction and trouble-shooting tasks traditionally associated with commercial diving are not included within scientific diving.

4. Scientific divers, based on the nature of their activities, must use scientific expertise in studying the underwater environment and, therefore, are scientists or scientists in training. (50 FR 1050, Jan. 9, 1985)

[blocks in formation]

Subparts U-Y (Reserved)

88 1910.442–1910.999 (Reserved]

EDITORIAL NOTE: This listing is provided for information purposes only. It is compiled and
kept up-to-date by the Department of Labor.

[blocks in formation]

A-Frame Derricks: (see also Der- | .181

ricks).
Aboveground storage tanks, flamma-.106(b)(2)
ble and combustible liquid.
Spacing

.106(b)(2)(ii)
Venting...

.106(b)(2)

(iv), (v),

(vi)
Spill control.

.106(b)(2)(viii)
Abrasive Blasting: (see also Ventila- .94
tion).

Air Compressors, Breathing Air ..... .94(a)(6)
Air Supply. Breathing ....

.94(a)(6)
Blast Cleaning Enclosures .94(a)(3)
Cleaning Nozzles..

.244(b)
Dust Hazards

.94(a)(2)
Abrasive Wheel Machinery:
Blotters ..

.215(c)(6)
Definitions...

.211(b)
Effective Dates.

.220
Excluded Machinery.

.215(a)(5)
Flanges...

.215(a)(3),

(c)
Guard Design.

.215(a)(2)
Specifications

.215(b)(12)
Guard Exposure Angles

.215(b)(2)
Band Type ......

.215(b)(11)
Bench and Floor Stands.. .215(b)(3)
Cup Wheels ......

.215(b)(1)
Cylindrical Grinders

.215(b)(4)
Dimensions....

.215(b)(10)
Material Requirements. .215(b)(10)
Snagging Machines

.215(b)(7)
Surface Grinding.

.215(b)(5)
Swing Frame.

.215(b)(6)
Guarding.....

.215(a)(1),

(b)
Mounting....

215(d)
Arbor Size

.215(d)(2)
Blotters...

.215(d)(5)
Bushings.

.215(d)(4)
Inspections

.215(d)(1)
Multiple Wheel

.215(d)(6)
Ring Test ....

.215(d)(1)
Surface Conditions

.215(d)(3)
Standards Sources...

.221
Work Rests

.215(a)(4)
Abrasive Wheel Machinery, Portable:
Definitions....

.241(b)
Guarding.

.243(c)
Cup Wheels .....

.243(c)(2)
General Requirements. .243(c)(1)
Other Type Grinders

.243(c)(4)
Vertical Grinders.

.243(c)(3)
Inspection.......

.243(c)(5)
Mounting...

.243(c)(5)

Abrasive Wheels: (see Abrasive

Wheel Machinery)
Access:

Bulk Oxygen Systems......... .104(b)(2)(ii)
Cranes

.179(c)(2)
Exposure and medical records. .20
Industrial Plants.

.106(e)(9)(ii)
Powered Platforms..

.66
Processing Plants...

.106(h)(8)(ii)
Spraying Operations, Vents .107(d)(10)
Sprinkler valve.

.107(0(2)
Accident Prevention Signs and Tags: .145
(see also Signs and Tags).
Effective Dates

.149(a)
Standards Sources.

.150
2-Acetylaminofluorene.

.1014
Area requirements...

.1014(c)
Closed system operation. .1014(c)(2)
Isolated systems....

.1014(c)(1)
Maintenance and decon- .1014(c)(5)

tamination activities.
Open-vessel system oper- | .1014(c)(3)

ations.
Transter from a closed op-.1014(c)(4)

eration.
Definitions.....

.1014(b)
Medical surveillance..

.1014(9)
Examinations.

.1014(g)(1)
Records

.1014(9)(2)
Regulated area requirements .1014(d)

Contamination control. .1014(d)(4)
Emergencies.........

.1014(d)(2)
Hygiene facilities and prac-.1014(d)(3)

tices.
Reports .......

.10140
Incidents.

.101410(2)
Operations...

.1014(0(1)
Scope and application ..... .1014(a)
Signs, information, and training. .1014(e)

Container contents identifi- | .1014(e)(2)

cation.
Lettering...

.1014(e)(3)
Prohibited statements .1014(e)(4)
Signs

.1014(e)(1)
Training and indoctrination. .1014(e)(5)
Acetylene .......

.102
Cylinders..

.102(a), (c)
Generators

.102(c)
Pipe Systems.

.102(b)
Acetylene Generators..

.253(0)
Approval

.253(0)(1)
Location....

.253(0(3)
Maintenance

.253(0(7)
Marking

.253(0(1)
Operation.

.253(0(7)
Portable

.253(0(5)

[blocks in formation]

Pressure Limits

.253(1)(2)
Rating...

.253(1)(2)
Stationary.

.253(1)(4)
Houses and Rooms.

.253(1)(6)
Acid Carboys

.262(nn)
Acrylonitrile

.1045
Adjustments:
Cranes

.179(1)(3)
Derricks...

.181(0)(2), (3)
AEC Licensees.

.96(p)
Agricultural Operations.

.267
Air Compressors, Abrasive Blasting ..... .94(a)(6),

.134(d)(2)(ii)
Air Contaminants.

.1000, .1001
Effective Dates

.98, .1000
Exposure Limits ..

.1000, .1001
Permissible exposure limits. .1000
Standards Sources....

.99
Air Controlling Equipment, Power .217(b)(10)

Presses.
Air Lift Hammers, Forging......

.218(e)(1)
Air Quality

.134(d)
Air Receivers:
Application.....

.169(a)(1)
Compressed Air.

.169
Equipment:
Drains .....

.169(b)(2)
Installation.

.169(b)(1)
Pressure Gages

.169(b)(3)
Traps

.169(b)(2)
Valves

.169(b)(3)
Standards Sources...

.169(a)(2),

.170
Air Supply.

.94(a)(6),

.134(d)
Airborne Radioactive Materials Expo- .96(c)

sure Limits.
Airhoses.

.243(b)(2)
Aisles:
Working Surfaces.

.22(b)
Alarms: (see also Fire Alarms, Sprin-
klers, Warning Devices)
Employee alarm systems

.165
Mills and Calenders .

216(g)
Rubber and Plastics.

.216(9)
4-Aminodiphenyl.....

.1011
Area requirements..

.1011(c)
Closed system operation. .1011(c)(2)
Isolated systems...

.1011(c)(1)
Maintenance and decon- | .1011(c)(5)

tamination activities.
Open-vessel system oper- .1011(c)(3)

ations.
Transfer from a closed op- | .1011(c)(4)

eration.
Definitions.......

.1011(b)
Medical surveillance.

.1011(9)
Examinations.

.1011(g)(1)
Records

.1011(g)(2)

Regulated area requirements. .1011(d)

Contamination control.. .1011(d)(4)
Emergencies.

.1011(d)(2)
Hygiene facilities and prac-.1011(d)(3)

tices.
Reports ...

.1011(0)
Incidents

.1011(1)(2)
Operations ....

.101100(1)
Scope and application ........ .1011(a)
Signs, information, and training .. .1011(e)

Container contents identifi- | .1011(e)(2)

cation.
Lettering...

.1011(e)(3)
Prohibited statements .1011(e)(4)
Signs

.1011(e)(1)
Training and indoctrination ..... .1011(e)(5)
Ammonia, Anhydrous: (see also An-.111

hydrous Ammonia).
Ammonium Nitrate.

.109(1)
Bulk Storage

.109(1)(4)
Containers.

.109(1)(3)
Contaminants.

.109(1)(5)
Electrical Installations

.109(1)(6)
Fire Protection.

.10900(7)
Separation Walls

.109(1)(5)
Warehouses

.109(1)(4)
Anchoring Fixed Machinery

.212(a)(5),

(b)
Anhydrous Ammonia:
Containers:
Appurtenances.

.111(b)(6)
Charging...

.111(b)(11)
DOT.

.111(e)
Farm Vehicles

.111(9). (h)
Location ..

.111(b)(5)
Motor Vehicle.

.111(0)
Markings

.111(b)(3)
Non-Refrigerated

.111(b)(2),

(c)
Refrigerated.

.111(d)
Markings..

.111(b)(4)
Safety Relief Devices.. .111(b)(9).

(c)(3),
(d)(4),

(0)(5)
Definitions.....

.111(a)(2)
Effective Dates

.114
Electrical Systems..

.111(b)(16)
Fittings.

.111(b)(7)
Handling

.111
Hoses..

.111(b)(8)
Liquid Level Gaging Devices .111(b)(14)
Liquid Transfer....

.111(b)(12)

(1)(6)
Piping

.111(b)(7)
Standards Sources.

.115
Storage

.111
Tank Car Unloading.

.111(b)(13)
Tubing...

.111(b)(7)

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