System categories, central supply options, redundancy and dental systems

Grounded in the retrieved California Plumbing Code — click a citation to read the verbatim passage:

• CPC § 1326.9 High relevance — show source text

  1326.9 Distribution. Category 3 systems shall comply with Section 1318.0 through Section 1323.12. [NFPA 99:5.3.10]

  1326.10 Labeling and Identification. Category 3 systems shall comply with Section 1323.13 through Section 1323.15.

  [NFPA 99:5.3.11]

  Part V – Dental Gas and Vacuum Systems.

  1327.0 Dental Gas and Vacuum Systems. 1327.1 General. Dental gas and vacuum systems shall comply with this code and NFPA 99. 1327.2 Emergency Shutoff Valves (Oxygen and Nitrous Oxide).

  (1) All Category 2 medical gas systems shall have an emergency shutoff valve accessible from all use-point locations in an emergency.

  (2) Where a central medical gas supply system supplies two treatment facilities, each facility shall be provided with an emergency shutoff valve located in that treatment facility so as to be accessible from all use-point locations in an emergency.

  (3) Emergency shutoff valves shall be labeled to indicate the gas controlled by the shutoff valve and shall shut off only the gas to the treatment facility that they serve.

  (4) A remotely activated shutoff valve at a gas supply manifold shall not be used for emergency shutoff. For clinical purposes, such a remote valve actuator shall not fail-close in the event of loss of electric power. Where remote actuators are the type that fail-open, it shall be mandatory that cylinder shutoff valves be closed whenever the system is not in use. [NFPA 99:15.4.2.6.1 – 15.4.2.6.4.2]

  1327.3 Warning Systems (Oxygen and Nitrous Oxide). Category 2 warning systems shall comply with Section 1325.10 except as follows:

  (1) Warning systems shall be permitted to be a single alarm panel.

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  Part IV – Category 3 Piped Gas and Vacuum Systems.

  1326.0 Category 3 Piped Gas and Vacuum Systems. 1326.1 General. Category 3 piped gas and vacuum systems shall be permitted when all of the following criteria are met:

  (1) Only minimal sedation, as defined in Chapter 2; or no sedation is performed. Deep sedation, moderate sedation, and general anesthesia are not performed.

  (2) The loss of the piped gas and vacuum systems is not likely to cause injury to patients, staff, or visitors, but can cause discomfort.

  (3) The facility piped gas and vacuum systems are intended for Category 3 patient care rooms as defined in Chapter 2. [NFPA 99:5.3.1.2]

  1326.2 Nature of Hazards of Gas and Vacuum Sys- tems. The requirement of Section 1307.2 shall apply to the nature of hazards of gas and vacuum systems. [NFPA 99:5.3.2]

  1326.3 Medical Air Supply Systems. Category 3 central supply systems shall be permitted to consist of the following:

  (1) Gas cylinder or cryogenic liquid container headers in accordance with NFPA 99.

  (2) Oxygen concentrator supply units in accordance with NFPA 99.

  (3) Cylinder manifolds for gas cylinders in accordance with NFPA 99.

  (4) Manifolds for cryogenic liquid containers in accordance with NFPA 99.

• CPC § 1307.0 High relevance — show source text

  Notes: 1 Includes pediatric nursery. 2 Includes obstetric recovery. 3 Emergency trauma rooms used for surgical procedures shall be classified as general operating rooms. 4 Vacuum inlets required are in addition to inlets used as part of a scavenging system for removal of anesthetizing gases.

  Part II – Category 1 Piped Gas and Vacuum Systems.

  1307.0 Central Supply Systems.

  1307.1 Terms. Where the terms medical gas or medical support gas occur, the provisions shall apply to all piped systems for oxygen, nitrous oxide, medical air, carbon dioxide, helium, nitrogen, instrument air, and mixtures thereof. Wherever the name of a specific gas service occurs, the provision shall apply only to that gas. [NFPA 99:5.1.1.3] 1307.2 Nature of Hazards of Gas and Vacuum Sys- tems. Potential fire and explosion hazards associated with positive pressure gas central piping systems and medical–surgical vacuum systems shall be considered in the design, installation, testing, operation, and maintenance of these systems. [NFPA 99:5.1.2]

  1307.3 Permitted Locations for Medical Gases. Central supply systems for oxygen, medical air, nitrous oxide, carbon dioxide, and all other patient medical gases shall be piped only to medical gas outlets complying with Section 1315.0, into areas where the gases will be used under the direction of licensed medical professionals for purposes congruent with the following:

  (1) Direct respiration by patients.

  (2) Clinical application of the gas to a patient, such as the use of an insufflator to inject carbon dioxide into patient body cavities during laparoscopic surgery and carbon dioxide used to purge heart-lung machine blood flow

  ways.

  (3) Medical device applications directly related to respiration.

  (4) Power for medical devices used directly on patients.

  (5) Calibration of medical devices intended for Section 1307.3(1) through Section 1307.3(4).

  (6) Simulation centers for the education, training, and assessment of health care professionals. [NFPA 99:5.1.3.5.2]

  1307.4 Materials. Materials used in central supply systems shall meet the following requirements:

  (1) In those portions of systems intended to handle oxygen at gauge pressures greater than 350 pounds-force per square inch (psi) (2413 kPa), interconnecting hose shall contain no polymeric materials.

  (2) In those portions of systems intended to handle oxygen or nitrous oxide material, construction shall be compatible with oxygen under the temperatures and pressures to which the components can be exposed in the containment and use of oxygen, nitrous oxide, mixtures of these gases, or mixtures containing more than 23.5 percent oxygen.

  (3) If potentially exposed to cryogenic temperatures, materials shall be designed for low temperature service.

  (4) If intended for outdoor installation, materials shall be installed per the manufacturer’s requirements. [NFPA 99:5.1.3.5.4]

  1308.0 Pressure-Regulating Equipment.

  1308.1 Where Required. Pressure-regulating equipment shall be installed in the supply main upstream of the final linepressure valve. Where multiple piping systems for the same gas at different operating pressures are required, separate pressure-regulating equipment, relief valves, and source shutoff valves shall be provided for each pressure.

  1308.2 Pressure Relief Valves. All pressure relief valves shall meet the following requirements:

• CPC § 1325.13 Medium relevance — show source text

  1325.13 Performance Criteria and Testing — Gas, Medical–Surgical Vacuum, and WAGD. Category 2 systems shall comply with Section 1324.0. [NFPA 99:5.2.12]

  2025 CALIFORNIA PLUMBING CODE 299

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  HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS

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  1326.6 Station Outlets and Inlets. Category 3 systems shall comply with Section 1315.0. [NFPA 99:5.3.5]

  1326.7 Pressure and Vacuum Indicators. Category 3 systems shall comply with Section 1316.2. [NFPA 99:5.3.8] 1326.8 Warning Systems. Warning systems associated with Category 3 systems shall provide the master, area, and local alarm functions of a Category 1 system as required in Section 1317.0, except as follows:

  (1) Warning systems shall be permitted to be a single alarm panel (i.e., a combination master/area alarm panel).

  (2) The alarm panel shall be located in an area of continuous surveillance while the facility is in operation.

  (3) Pressure and vacuum switches/sensors shall be mounted at the source equipment with a pressure indicator at the master alarm panel.

  (4) Electrical power for warning systems shall be in accordance with Section 6.6 of NFPA 99 for Category 3 and Category 4 spaces. [NFPA 99:5.3.9]

  1326.9 Distribution. Category 3 systems shall comply with Section 1318.0 through Section 1323.12. [NFPA 99:5.3.10]

  1326.10 Labeling and Identification. Category 3 systems shall comply with Section 1323.13 through Section 1323.15.

  [NFPA 99:5.3.11]

  Part V – Dental Gas and Vacuum Systems.

  1327.0 Dental Gas and Vacuum Systems. 1327.1 General. Dental gas and vacuum systems shall comply with this code and NFPA 99. 1327.2 Emergency Shutoff Valves (Oxygen and Nitrous Oxide).

  (1) All Category 2 medical gas systems shall have an emergency shutoff valve accessible from all use-point locations in an emergency.

  (2) Where a central medical gas supply system supplies two treatment facilities, each facility shall be provided with an emergency shutoff valve located in that treatment facility so as to be accessible from all use-point locations in an emergency.

  (3) Emergency shutoff valves shall be labeled to indicate the gas controlled by the shutoff valve and shall shut off only the gas to the treatment facility that they serve.

  (4) A remotely activated shutoff valve at a gas supply manifold shall not be used for emergency shutoff. For clinical purposes, such a remote valve actuator shall not fail-close in the event of loss of electric power. Where remote actuators are the type that fail-open, it shall be mandatory that cylinder shutoff valves be closed whenever the system is not in use. [NFPA 99:15.4.2.6.1 – 15.4.2.6.4.2]

• CPC § 1305.2.3.3 Medium relevance — show source text

  2, 1305.2.3.3, 1305.2.4.1, 1305.2.5, 1305.2.5.1, 1305.2.6, 1305.2.7.1, 1305.2.8, 1305.2.9, 1305.2.9.1, 1305.2.10, 1305.2.10.1, 1305.2.11, 1305.2.11.1, 1305.2.12.1, 1305.2.13, Table 1305.2.15, 1305.2.15.1, 1305.2.16.1, 1305.2.17, 1305.2.17.1, 1305.2.18, 1305.2.18.1, 1305.2.19, Table 1305.2.19, 1305.2.20, 1305.2.20.1, 1307.1.1, 1401.2, 1402.1, 1402.2, 1402.2.1, 1402.3, 1402.4, 1402.5, 1402.6, 1501.5, 1504.1.1, 1504.1.4.1, 1504.1.7, 1509.1, 1509.3, 1510.1

  CEC — 25 : California Energy Code

  302.2, 702.7, 708.1, 809.1, 907.1, 1104.1

  CFC—25: California Fire Code

  101.2.2, 101.4.2, 301.3.1, 302.2, 307.1, 308.1, 802.2.1, 802.2.3, 803.2.3, 803.4.1.1, 803.4.1.2, 803.4.1.3, 803.4.1.4, 803.4.1.5, 803.4.1.6, Table 804.5.1.1(1), 904.1.5, 1011.6.1.1, 1303.1.2, 1305.2.8.1, 1305.2.14, 1305.2.14.1, 1401.2, 1501.1, 1501.5, 1502.1, 1502.1.1, 1502.2, 1502.3, 1504.1, 1507.1, 1507.2

  CMC—25: California Mechanical Code

  302.2, 702.7, 807.1, 902.1.1, 1008.1, 1305.2.7.1, 1305.2.8, 1305.2.8.1

  CPC—25: California Plumbing Code

  302.2, 408.1, 702.7, 1009.1, 1009.2, 1009.3, 1009.5, 1302.1.6, 1503.1

• CPC § 7.3 Medium relevance — show source text

  3|7.3|9.9|14.6| |26|NP|NP|NP|NP|13.2|22.4|NP|NP|5.0|8.5|11.4|16.9| |28|NP|NP|NP|NP|15.1|25.7|NP|NP|5.7|9.7|13.1|19.4| |30|NP|NP|NP|NP|17.2|NP|NP|NP|6.5|11.0|14.9|22.0| |32|NP|NP|NP|NP|19.4|NP|NP|NP|7.3|12.4|16.8|24.8| |34|NP|NP|NP|NP|21.7|NP|NP|NP|8.2|13.9|18.8|NP| |36|NP|NP|NP|NP|24.1|NP|NP|NP|9.1|15.4|20.9|NP| |For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 gallon per minute = 0.063 L/s, 1 pound per square inch = 6.895 kPa.
  NP = Not Permitted. Pressure loss exceeds reasonable limits.
  a. Values are applicable for underground piping materials listed in_ the California Plumbing Code_ and are based on an SDR of 11 and a Hazen Williams C Factor of 150.
  b. Values include the following length allowances for fittings: 25-percent length increase for actual lengths up to 100 feet and 15-percent length increase for actual lengths over
  100 feet.
  c. Flow rate from Section P2904.4.2. Add 5 gpm to the flow rate required by Section_R309.3.4.2_ where the water service pipe supplies more than one dwelling.|For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 gallon per minute = 0.063 L/s, 1 pound per square inch = 6.895 kPa.
  NP = Not Permitted. Pressure loss exceeds reasonable limits.
  a. Values are applicable for underground piping materials listed in_ the California Plumbing Code_ and are based on an SDR of 11 and a Hazen Williams C Factor of 150.
  b. Values include the following length allowances for fittings: 25-percent length increase for actual lengths up to 100 feet and 15-percent length increase for actual lengths over
  100 feet.
  c. Flow rate from Section P2904.4.2. Add 5 gpm to the flow rate required by Section_R309.3.4.2_ where the water service pipe supplies more than one dwelling.|For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 gallon per minute = 0.063 L/s, 1 pound per square inch = 6.895 kPa.
  NP = Not Permitted. Pressure loss exceeds reasonable limits.
  a. Values are applicable for underground piping materials listed in_ the California Plumbing Code_ and are based on an SDR of 11 and a Hazen Williams C Factor of 150.
  b. Values include the following length allowances for fittings: 25-percent length increase for actual lengths up to 100 feet and 15-percent length increase for actual lengths over
  100 feet.
  c. Flow rate from Section P2904.4.2.

• CPC § 5.1.3.7.5 Medium relevance — show source text

  (2) Piping arrangement shall be permitted to vary based on the technology(ies) employed, provided that an equal level of operating redundancy is maintained.

  (3) Where only one set of vacuum pumps is available for a combined medical-surgical vacuum system and an analysis, a research, or a teaching laboratory vacuum system, such laboratories shall be connected separately from the medical-surgical system directly to the receiver tank through its own isolation valve and fluid trap located at the receiver, and between the isolation valve and fluid trap, a scrubber shall be permitted to be installed. [NFPA 99:5.1.3.7.5, 5.1.3.7.5.1] 1312.6 Piping Serviceability. The medical-surgical vacuum receiver(s) shall be serviceable without shutting down the medical-surgical vacuum system by any method to ensure continuation of service to the facility’s medical-surgical pipeline distribution system. [NFPA 99:5.1.3.7.5.2] 1312.7 Shutoff Valve. Medical-surgical vacuum central supply systems shall be provided with a source shutoff valve per Section 1314.6. [NFPA 99:5.1.3.7.5.3]

  1313.0 Medical-Surgical Vacuum Exhaust. 1313.1 Vacuum Source Exhausts. The medical-surgical vacuum pumps shall exhaust in a manner and location that minimizes the hazards of noise and contamination to the facility and its environment. [NFPA 99:5.1.3.7.7.1]

  1313.2 Location. The exhaust shall be located as follows:

  (1) Outdoors.

  (2) At least 25 feet (7620 mm) from any door, window, air intake, or other openings in buildings or places of public assembly.

  (3) At a level different from air intakes.

  (4) Where prevailing winds, adjacent buildings, topography, or other influences will not divert the exhaust into occupied areas or prevent dispersion of the exhaust. [NFPA 99: 5.1.3.7.7.2] 1313.3 Screening. The end of the exhaust shall be turned down and screened or otherwise be protected against the entry of vermin, debris, or precipitation by screening fabricated or composed of a noncorroding material. [NFPA 99:5.1.3.7.7.3]

  1313.4 Dips and Loops. The exhaust shall be free of dips and loops that might trap condensate or oil or provided with a drip leg and valved drain at the bottom of the low point.

  [NFPA 99:5.1.3.7.7.5]

  1313.5 Multiple Pumps. Vacuum exhausts from multiple pumps shall be permitted to be joined together to one common exhaust where the following conditions are met:

  (1) The common exhaust is sized to minimize back pressure in accordance with the pump manufacturer’s recommendations.

  (2) Each pump can be isolated by manual or check valve, blind flange, or tube cap to prevent open exhaust piping when the pump(s) is removed for service from consequent flow of exhaust air into the room. [NFPA 99:5.1.3.7.7.6]

  1314.0 Valves.

• CPC § 1314.5 Medium relevance — show source text

  1314.5 Valve Types. New or replacement valves shall be permitted to be of any type as long as they meet the following conditions:

  (1) They have a minimum Cv factor in accordance with Table 1314.5(1) or Table 1314.5(2).

  (2) They use a quarter turn to off.

  (3) They are constructed of materials suitable for the service.

  (4) They are provided with copper tube extensions by the manufacturer for brazing or with corrugated medical tubing (CMT) fittings.

  (5) They indicate to the operator if the valve is open or closed.

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  HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS

  (6) They permit in-line serviceability.

  (7) They are cleaned for oxygen service by the manufacturer if used for any positive-pressure service.

  (8) They have threaded purge ports on the patient side and the source side.

  (9) They have a minimum working pressure equal to or greater than the relief valve protecting the piping system on which the valve is installed for any positive-pressure service. [NFPA 99:5.1.4.1.6]

  TABLE 1314.5(1) POSITIVE PRESSURE GASES

  [NFPA 99: TABLE 5.1.4.1.6(a)]

  VALVE SIZE (inch)	MINIMUM Cv (full open)
  1_/_2	17
  3_/_4	31
  1	60
  11_/_4	110
  11_/_2	169
  2	357
  21_/_2	390
  3	912
  4	1837

  For SI units: 1 inch = 25.4 mm

  TABLE 1314.5(2) VACUUM AND WAGD

  [NFPA 99:TABLE 5.1.4.1.6(b)]

  VALVE SIZE (inch)	MINIMUM Cv (full open)
  1_/_2	17
  3_/_4	31
  1	60
  11_/_4	110
  11_/_2	169
  2	357
  21_/_2	196
  3	302
  4	600
  5	1022
  6	1579
  8	3136

  For SI units: 1 inch = 25.4 mm

  1314.6 Source Valves. A shutoff valve shall be placed at the immediate connection of each central supply system to the piped distribution system to allow the entire central supply system, including all accessory devices (e.g., air dryers, final line regulators), to be isolated from the facility. [NFPA 99:5.1.4.2.1]

  1314.6.1 Location. The source valve shall be located in the immediate vicinity of the central supply system.

• CPC § 5.1.3.6.3.11 Medium relevance — show source text

  (1) The common intake is sized to minimize backpressure in accordance with the manufacturer’s recommendations.

  (2) Each compressor can be isolated by manual or check valve, blind flange, or tube cap to prevent open inlet piping when the compressor(s) is removed for service from the consequent backflow of room air into the other compressor(s). [NFPA 99:5.1.3.6.3.11(G)] 1311.6 Screening. The end of the intake shall be turned down and screened or otherwise be protected against the entry of vermin, debris, or precipitation by screening fabricated or composed of a noncorroding material. [NFPA 99:5.1.3.6.3.11(H)]

  1312.0 Medical Surgical Vacuum Central Supply Sys- tems.

  1312.1 General. The vacuum plant shall be installed in a well-lit, ventilated, and clean location with accessibility. The location shall be provided with drainage facilities in accordance with this code. The vacuum plant, where installed as a source, shall be located separately from other medical vacuum system sources and shall be readily accessible for maintenance. 1312.2 Medical-Surgical Vacuum Sources. Medicalsurgical vacuum central supply systems shall consist of the following:

  (1) Two or more vacuum pumps sufficient to serve the peak calculated demand with the largest single vacuum pump out of service.

  (2) Automatic means to prevent backflow from any on-cycle vacuum pumps through any off-cycle vacuum pumps.

  (3) Shutoff valve or other isolation means to isolate each vacuum pump from the centrally piped system, and other vacuum pumps for maintenance or repair without loss of vacuum in the system.

  (4) Vacuum receiver.

  (5) Piping between the vacuum pump(s), discharge(s), receiver(s), and vacuum source shutoff valve in accordance with Section 1319.0, except brass, galvanized, or black steel pipe, which is permitted to be used as recommended by the manufacturer.

  (6) Except as defined in Section 1312.2(1) through Section 1312.2(5), materials and devices used between the medical vacuum exhaust and the medical vacuum source that are permitted to be of any design or construction appropriate for the service as determined by the manufacturer.

  (7) Vacuum filtration per Section 1312.4. [NFPA 99:5.1.3.7.1.1]

  1312.3 Vacuum Receivers. Receivers for vacuum shall meet the following requirements:

  (1) They shall be made of materials deemed suitable by the manufacturer.

  (2) They shall comply with Section VIII.1, “Unfired Pressure Vessels,” of the ASME Boiler and Pressure Vessel Code.

  (3) They shall be capable of withstanding a gauge pressure of 60 psi (414 kPa) and 30 inch (762 mm) gauge HgV.

  (4) They shall be equipped with a manual drain.

  (5) They shall be of a capacity based on the technology of the pumps. [NFPA 99:5.1.3.7.3]

  1312.4 Vacuum Filtration. Central supply systems for vacuum other than liquid ring pumps shall be provided with inlet filtration with the following characteristics:

  (1) Filtration shall be at least duplex to allow one filter to be exchanged without impairing the vacuum system.

  (2) Filtration shall be located on the patient side of the vacuum producer.

• CPC § 17.4 Medium relevance — show source text

  8|17.4|1.5|2.5|3.4|5.1|0.6|1.0|1.3|1.9| |10|7.7|13.1|17.8|26.3|2.3|3.8|5.2|7.7|0.8|1.4|2.0|2.9| |12|10.8|18.4|24.9|NP|3.2|5.4|7.3|10.7|1.2|2.0|2.7|4.0| |14|14.4|24.5|NP|NP|4.2|7.1|9.6|14.3|1.6|2.7|3.6|5.4| |16|18.4|NP|NP|NP|5.4|9.1|12.4|18.3|2.0|3.4|4.7|6.9| |18|22.9|NP|NP|NP|6.7|11.4|15.4|22.7|2.5|4.3|5.8|8.6| |20|27.8|NP|NP|NP|8.1|13.8|18.7|27.6|3.1|5.2|7.0|10.4| |22|NP|NP|NP|NP|9.7|16.5|22.3|NP|3.7|6.2|8.4|12.4| |24|NP|NP|NP|NP|11.4|19.3|26.2|NP|4.3|7.3|9.9|14.6| |26|NP|NP|NP|NP|13.2|22.4|NP|NP|5.0|8.5|11.4|16.9| |28|NP|NP|NP|NP|15.1|25.7|NP|NP|5.7|9.7|13.1|19.4| |30|NP|NP|NP|NP|17.2|NP|NP|NP|6.5|11.0|14.9|22.0| |32|NP|NP|NP|NP|19.4|NP|NP|NP|7.3|12.4|16.8|24.8| |34|NP|NP|NP|NP|21.7|NP|NP|NP|8.2|13.9|18.8|NP| |36|NP|NP|NP|NP|24.1|NP|NP|NP|9.1|15.4|20.9|NP| |For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 gallon per minute = 0.063 L/s, 1 pound per square inch = 6.895 kPa.
  NP = Not Permitted. Pressure loss exceeds reasonable limits.
  a. Values are applicable for underground piping materials listed in_ the California Plumbing Code_ and are based on an SDR of 11 and a Hazen Williams C Factor of 150.
  b. Values include the following length allowances for fittings: 25-percent length increase for actual lengths up to 100 feet and 15-percent length increase for actual lengths over
  100 feet.
  c. Flow rate from Section P2904.4.2.

• CPC § 5.1.3.6.3.9 Medium relevance — show source text

  (1) Components shall be arranged to allow service and a continuous supply of medical air in the event of a single fault failure.

  Component arrangement shall be permitted to vary as required by the technology(ies) employed, provided that an equal level of operating redundancy and medical air quality is maintained. [NFPA 99:5.1.3.6.3.9(A)(1), 5.1.3.6.3.9(A)(2)]

  (2) Automatic means to prevent backflow from all oncycle compressors through all off-cycle compressors.

  (3) Manual shutoff valve to isolate each compressor from the centrally piped system and from other compressors for maintenance or repair without loss of pressure in the system.

  (4) Intake filter-muffler(s) of the dry type.

  (5) Pressure relief valve(s) set at 50 percent above line

  pressure.

  (6) Piping and components between the compressor and the source shutoff valve that do not contribute to

  contaminant levels.

  (7) Except as defined in Section 1310.3.2(1) through Section 1310.3.2(6), materials and devices used between the medical air intake and the medical air source valve that are of any design or construction appropriate for the service as determined by the manufacturer. [NFPA 99:5.1.3.6.3.2 (2-7)]

  1310.4 Medical Air Receivers. Receivers for medical air shall meet the following requirements:

  (1) They shall be made of corrosion-resistant materials or otherwise be made corrosion resistant.

  (2) They shall comply with Section VIII.1, “Unfired Pressure Vessels,” of the ASME Boiler and Pressure Vessel Code.

  (3) They shall be equipped with a pressure relief valve, automatic drain, manual drain, sight glass, and pressure indi cator.

  (4) They shall be of a capacity sufficient to prevent the compressors from short-cycling. [NFPA 99:5.1.3.6.3.6]

  1310.5 Valves. A medical air receiver(s) shall be provided with proper valves to allow the flow of compressed air to enter and exit out of separate receiver ports during normal operation and allow the receiver to be bypassed during service without shutting down the supply of medical air. [NFPA 99:5.1.3.6.3.9(D)]

  1311.0 Compressor Intake.

  1311.1 Air Sources. Air sources for medical air compressors shall comply with Section 1311.2 through Section 1311.6.

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  HEALTH CARE FACILITIES AND MEDICAL GAS AND MEDICAL VACUUM SYSTEMS

  1311.2 Medical Air Compressor Source. The medical air compressors shall draw their air from a source of clean air. [NFPA 99:5.1.3.6.3.11(A)]

  If an air source equal to or better than outside air (e.g., air already filtered for use in operating room ventilating systems) is available, it shall be permitted to be used for the medical air compressors with the following provisions:

  (1) This alternate source of supply air shall be available on a continuous 24 hours-per-day, 7 day-per-week basis.

• CPC § 1301.3 Medium relevance — show source text

  (1) Cylinder and container management, storage, and reserve requirements

  (2) Bulk supply systems

  (3) Electrical connections and requirements

  (4) Motor requirements and controls

  (5) Systems having nonstandard operating pressures

  (6) Waste anesthetic gas disposal (WAGD) systems

  (7) Surface-mounted medical gas rail systems

  (8) Breathing air replenishment (BAR) systems

  (9) Portable compressed gas systems

  (10)Medical support gas systems

  (11)Gas-powered device supply systems

  (12)Scavenging systems 1301.3 Conflict of Requirements. The requirements of this chapter shall not be interpreted to conflict with the requirements of NFPA 99. For requirements of portions of medical gas and vacuum systems not addressed in this chapter or medical gas and vacuum systems beyond the scope of this chapter refer to NFPA 99.

  1301.4 Where Required. Construction and equipment requirements shall be applied only to new construction and new equipment, except as modified in individual sections of this chapter. {NFPA 99:1.3.2} 1301.5 Existing Systems. Only the altered, renovated, or modernized portion of an existing system or individual component shall be required to meet the installation and equipment requirements stated in this code. If the alteration, renovation, or modernization adversely impacts the existing performance requirements of a system or component, additional upgrading shall be required. An existing system that is not in strict compliance with the provisions of this code shall be permitted to be continued in use, unless the Authority Having Jurisdiction has determined that such use constitutes a distinct hazard to life. [NFPA 99:1.3.2.1 – 1.3.2.3]

  1302.0 Design Requirements. 1302.1 Risk Categories. All activities, as well as systems or equipment that are new or altered, shall be designed to meet Category 1 through Category 4 requirements, as detailed in this chapter. {NFPA 99:4.1} 1302.1.1 Processes and Operations. The health care facility’s governing body shall establish the processes and operations that are planned for the health care facility. [NFPA 99:4.2.1] 1302.1.1.1 Risk Categories. The governing body shall conduct risk assessments and shall determine risk categories based on the character of the processes and operations conducted in the health care facility. [NFPA 99:4.2.1.1] 1302.1.2 Risk Assessment. Risk categories shall be classified by the health care facility’s governing body by following and documenting a defined risk assessment procedure. [NFPA 99:4.2.2] 1302.1.2.1 Documents to the Authority Hav- ing Jurisdiction. Where required by the Authority Having Jurisdiction (AHJ), the risk assessment shall be provided to the AHJ for review based on the character of the processes and operations conducted in the health care facility. [NFPA 99:4.2.2.1]

  1302.1.3 Documented Risk Assessment. A documented risk assessment shall not be required where Category 1 is selected. [NFPA 99:4.2.3] 1302.2 Patient Care Spaces. The health care facility’s governing body or its designee shall establish the following areas in accordance with the type of patient care anticipated (see definition of patient care space in Chapter 2):

  (1) Category 1 spaces

  (2) Category 2 spaces

• CPC § 1326.6 Medium relevance — show source text

  1326.6 Station Outlets and Inlets . . . . . . .300

  1326.7 Pressure and Vacuum

  Indicators . . . . . . . . . . . . . . . . . . .300

  1326.8 Warning Systems . . . . . . . . . . . . .300

  1326.9 Distribution . . . . . . . . . . . . . . . . . .300

  1326.10 Labeling and Identification . . . . . .300

  PART V Dental Gas and Vacuum Systems . . . . . . . . . . . . . . . . . . . .300

  1327.0 Dental Gas and Vacuum Systems . . . . . . . . . . . . . . . . . . . .300

  1327.1 General . . . . . . . . . . . . . . . . . . . . .300

  1327.2 Emergency Shutoff Valves (Oxygen and Nitrous Oxide) . . . . .300

  1327.3 Warning Systems (Oxygen and Nitrous Oxide) . . . . . . . . . . . .300

  1327.4 Initial Pressure Test . . . . . . . . . . .301

  1327.5 Maximum Copper Tube Support Spacing . . . . . . . . . . . . . .301

  Table 1327.5 Maximum Copper Tube Support Spacing . . . . . . . . . . . . . .301

  1327.6 Maximum Plastic Pipe Support Spacing . . . . . . . . . . . . . .301

  Table 1327.6 Maximum Plastic Pipe Support Spacing . . . . . . . . . . . . . .301

  1327.7 Standing Pressure Tests for Oxygen and Nitrous Oxide Piping . . . . . . . . . . . . . . . . . . . . . .301

  1327.8 Verifier Operational Pressure Test . . . . . . . . . . . . . . . .302

  CHAPTER 14 FIRESTOP PROTECTION . . . . . .303

  1401.0 General . . . . . . . . . . . . . . . . . . . . .305

  1401.1 Applicability . . . . . . . . . . . . . . . . . .305

  2025 CALIFORNIA PLUMBING CODE xliii

  ), Copyright © 2025 IAPMO, and may not be used for any other purpose or distributed to any other persons or parties.

  TABLE OF CONTENTS

  1402.0 Construction Documents . . . . . . .305

  1402.1 Penetrations . . . . . . . . . . . . . . . . .305

  1403.0 Installation . . . . . . . . . . . . . . . . . .305

  1403.1 Materials . . . . . . . . . . . . . . . . . . . .305

  1404.0 Combustible Piping Installations . . . . . . . . . . . . . . . . . .305

  1404.1 General Requirements . . . . . . . . .305

  1404.2 Fire-Resistance Rating . . . . . . . . .305

  1404.3 Firestop Systems . . . . . . . . . . . . .305