Title: |
Pressure and Cryogenics |
Publication date: |
9/10/2013 |
Effective date: |
6/17/2010 |
BRIEF
Policy Summary
Berkeley Lab's Pressure and Cryogenics Program manages gases and cryogenic liquids used at the Laboratory site by:
- Stating design and build requirements for gas and cryogenic delivery systems
- Identifying required training for those handling and using gases and cryogenic liquids
- Mandating the use of process safety documentation
- Listing usage and handling requirements for gases and cryogenic liquids
Who Should Read This Policy
All Berkeley Lab employees, visitors, affiliates, and subcontractors
To Read the Full Policy, Go To:
The POLICY tab on this wiki page
To Read the ES&H Program Details, Go To:
http://www.lbl.gov/ehs/pub3000/CH7.html
Contact Information
Pressure and Cryogenics Subject Matter Expert
EHSS Division
Title: |
Pressure Hazard Assessment and Control |
Publication date: |
9/10/2013 |
Effective date: |
6/17/2010 |
POLICY
A. Purpose
Berkeley Lab's Pressure and Cryogenics Program manages gases and cryogenic liquids used at the Laboratory site by:
- Stating design and build requirements for gas and cryogenic delivery systems
- Identifying required training for those handling and using gases and cryogenic liquids
- Mandating the use of process safety documentation
- Listing usage and handling requirements for gases and cryogenic liquids
B. Persons Affected
All Berkeley Lab employees, visitors, affiliates, and subcontractors
C. Exceptions
None
D. Policy Statement
- Pressure system safety is achieved by careful engineering, hazard controls, assuring structural integrity of the components, regulation of pressures and flow, and provision for pressure relief. (Work Process A)
- Low-pressure gas systems are pressure systems operating below 1 MPa gauge (150 psig) and consisting only of regulator, tubing, gauges, valves, and fittings. Low-pressure gas systems represent the lowest hazard category of pressure systems at Berkeley Lab. (Work Process B)
- Low-hazard pressure systems consist of equipment with a low hazard level involving routine risks that are accepted as such by the general public. (Work Process C)
- Pressure systems that do not fall into the low hazard category are high-hazard pressure systems. Specifically, high-hazard pressure systems include:
- All pressure vessel systems that contain irritant, toxic, infectious, and/or radioactive fluids at any pressure
- All pressure vessel systems with oxygen or flammable contents
- All pressurized equipment (including ASME-coded vessels that have been structurally modified) that operate at gas pressures over 1 MPa gauge (150 psig) or at liquid pressures over 10 MPa gauge (1,500 psig), or that contains over 100 kJ (75,000 ft-lb) of stored energy.(Work Process D)
- Vacuum systems that are back-filled from a pressurized supply must be equipped with a pressure-relief valve to assure that the system will not be subjected to pressures in excess of the Maximum Allowable Working Pressure. (Work Process E)
- The most severe hazard of cryogenic systems is the possible confinement of even small amounts of cryogenic liquid. (Work Process F)
- Employees who work with pressure systems over 1 MPa (150 psig) or with pressure vessel systems at any pressure must review training requirements with the EHSS Division pressure safety representative. (Work Process G)
E. Roles and Responsibilities
Role |
Responsibility |
Division Directors |
Responsible for assuring that all pressure systems are designed, assembled, and operated in accordance with the requirements of this chapter |
Environment, Health, Safety, and Security (EHSS) Division |
|
Engineering Division |
|
Engineering Division Director |
|
Facilities Division |
|
Designated Pressure Engineer |
|
Responsible Designer |
A competent mechanical designer, usually a member of the Engineering Division. Responsibilities include:
|
Responsible User |
|
Employees |
|
F. Definitions/Acronyms
Term |
Definition |
MAWP |
Maximum Allowable Working Pressure: The maximum pressure at which the design of pressure systems is based |
MOP |
Maximum Operating Pressure: The highest pressure at which a system will operate |
Pressure Installer |
Technicians or mechanics, usually in the Facilities Division, who have completed specialized training and have been designated and certified as such by their Department Head Pressure installers may be assigned to work directly for responsible designers. |
Pressure Regulator |
A valve or device designed to cut of flow at a set pressure. |
Pressure Relief Devices |
Valves or rupture disks designed to vent pressure above a set point. Their purpose is to ensure the pressure within the vessel does not exceed MAWP. |
Test Pressure |
The pressure at which a vessel is tested to validate it can withstand the MOP. Test pressures vary from 125% to 200% of the MAWP. |
G. Recordkeeping Requirements
- Pressure Relief Device Certifications: Facilities Division
- Pressure Vessel and System Test Certifications: Facilities Division
H. Implementing Documents
Document Number |
PUB-3000 Reference |
Title |
Type |
07.07.026.001 |
Pressure Safety and Cryogenics |
Program |
|
07.07.026.002 |
Chapter 7, Work Process A |
General Requirements |
Work Process |
07.07.026.003 |
Chapter 7, Work Process B |
Low-Pressure Gas Systems |
Work Process |
07.07.026.004 |
Chapter 7, Work Process C |
Low-Hazard Pressure Systems |
Work Process |
07.07.026.005 |
Chapter 7, Work Process D |
High-Hazard Pressure Systems |
Work Process |
07.07.026.006 |
Chapter 7, Work Process E |
Vacuum Systems |
Work Process |
07.07.026.007 |
Chapter 7, Work Process F |
Cryogenic Systems |
Work Process |
07.07.026.008 |
Chapter 7, Work Process G |
Training Requirements |
Work Process |
07.07.015.001 |
Gases |
Program |
|
07.07.009.001 |
Safe Handling of Cryogenic Liquids |
Program |
I. Contact Information
Pressure and Cryogenics Subject Matter Expert
EHSS Division
J. Revision History
Date |
Revision |
By whom |
Revision Description |
Section(s) affected |
Change Type |
1/2/2012 |
0 |
J. Dionne |
Re-write for wiki (brief) |
All |
Minor |
9/27/2012 |
1 |
J. Dionne |
Re-write for wiki (policy) |
All |
Minor |
9/10/2013 | 1.1 | K. Ettinger | Reviewed 8/28/13 | SRDs, Next Review date | Minor |
DOCUMENT INFORMATION
Title: |
Pressure Hazard Assessment and Control |
Document number |
07.07.026.000 |
Revision number |
1.1 |
Publication date: |
9/10/2013 |
Effective date: |
6/17/2010 |
Next review date: |
9/10/2016 |
Policy Area: |
Industrial Hygiene and Safety |
RPM Section (home) |
ESH |
RPM Section (cross-reference) |
none |
Functional Division |
EHSS |
Prior reference information (optional) |
PUB-3000 Chapter 7 |
Source Requirements Documents
- 29 CFR 1910, OSHA General Industry Standards
- 29 CFR 1910.101, Compressed Gases (General Requirements)
- 29 CFR 1910.102, Acetylene
- 29 CFR 1910.103, Hydrogen
- 29 CFR 1910.104, Oxygen
- 29 CFR 1910.106(b)(1)(v), Flammable Liquids
- 29 CFR 1910.110, Storage and Handling of Liquefied Petroleum Gases
- 29 CFR 1910.120(q), Emergency Response Program to Hazardous Substance Releases
- 29 CFR 1910.169, Air Receivers
- 29 CFR 1910.253, Oxygen-fuel Gas Welding & Cutting
- 29 CFR 1910, Subpart I, Personal Protective Equipment
- 29 CFR 1926, OSHA Construction Industry Standards
- 29 CFR 1926, Subpart C, General Safety and Health Provisions
- 29 CFR 1926.55, Gases, Vapors, Fumes, Dusts, and Mists
- 29 CFR 1926.153, Liquefied Petroleum Gas
- 29 CFR 1926.306, Air Receivers
- 29 CFR 1926.350, Gas Welding & Cutting
- 49 CFR 171–179, Storage & Transportation Guidance
- CGA pamphlet S-1.1-1963 and 1965 addenda
Other Driving Requirements
- CAC Title 24, Part 9, California Fire Code, Article 49, Welding & Cutting
- CAC Title 24, Part 9, California Fire Code, Article 51, Semi-conductor Fabrication
- CAC Title 24, Part 9, California Fire Code, Article 74, Compressed Gases
- CAC Title 24, Part 9, California Fire Code, Article 80, Hazardous Materials
- CAC Title 24, Part 9, California Fire Code, Article 82, Liquefied Petroleum Gas
- CCR Title 8, Division 1, Chapter 4, Subchapter 1, Unfired Pressure Vessel Safety Orders
- CGA pamphlet S-1.2-1963, Pressure Relief
Implementing Documents
Document Number |
PUB-3000 Reference |
Title |
Type |
07.07.026.001 |
Pressure Safety and Cryogenics |
Program |
|
07.07.026.002 |
Chapter 7, Work Process A |
General Requirements |
Work Process |
07.07.026.003 |
Chapter 7, Work Process B |
Low-Pressure Gas Systems |
Work Process |
07.07.026.004 |
Chapter 7, Work Process C |
Low-Hazard Pressure Systems |
Work Process |
07.07.026.005 |
Chapter 7, Work Process D |
High-Hazard Pressure Systems |
Work Process |
07.07.026.006 |
Chapter 7, Work Process E |
Vacuum Systems |
Work Process |
07.07.026.007 |
Chapter 7, Work Process F |
Cryogenic Systems |
Work Process |
07.07.026.008 |
Chapter 7, Work Process G |
Training Requirements |
Work Process |
07.07.015.001 |
Gases |
Program |
|
07.07.009.001 |
Safe Handling of Cryogenic Liquids |
Program |