an ASHRAE Standard may be purchased from the ASHRAE Web site (www. ) or from .. , ANSI/ASHRAE , ANSI/ASHRAE ANSI/ ASHRAE Standard User’s Manual: Safety Standard for Refrigeration Systems (ASHRAE SP) [Donald L. Fenton, William V. Richards] on . From the editor In a previous newsletter, we discussed the application of ANSI/ ASHRAE. Standard 15, “Safety Standard for. Refrigeration Systems,” to large.
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These precautions shall address a instructions for shutting down the system in case of emergency; b the name, address, and day and night telephone numbers for obtaining service; and c the names, addresses, and telephone numbers of all corporate, local, state, and federal agencies to be contacted as required in the event of a reportable incident.
Interpretations To Standard 15-2001
Also, initial labeling and tagging of individual valves is costly as is the continued costs for maintaining proper tagging for the valves. Emergency shutdown procedures, including precautions to be observed in case of a breakdown or leak, shall be displayed on a conspicuous card located as near as possible to the refrigerant compressor.
The means used to build up the test pressure shall have either a pressure-limiting device or a pressure-reducing device and a gage on the outlet side. B7 Sizing Headers and Diffusers Retention basins shall meet the requirements as set forth by the fire chief in the local jurisdiction. Access to the refrigerating machinery room shall be restricted to authorized personnel. A dated declaration of test shall be provided for all systems containing 55 lb 25 kg or more of refrigerant.
Dougherty Hakim Elmahdy Matt R.
Pressure-limiting devices shall be connected between the pressure-imposing element and any stop valve on the discharge side. References in this standard are numbered in the order in which they appear in the document, so the numbers for the normative references are shown for 15–2001 convenience of the user.
Air duct systems of air-conditioning ashrse for human comfort using mechanical refrigeration shall be installed in accordance with approved safety standards, the requirements of the authority having jurisdiction, and the requirements of 8.
Please save each change proposal file with a different name example, prop To correct for height, h mabove sea level, multiply these values by 1? January 22, Request from: An alarm silence switch is useful for situations where personnel are to remain working in the room.
For the purpose of applying Tables 1 and 2, a refrigerating system shall be classified according to the degree of probability that a leakage of refrigerant will stxndard an occupancy-classified area as follows. IDLH immediately dangerous to life or health: Tree Hakim Elmahdy Jerry W.
The sizing of the common discharge header downstream from each of the two or more relief devices or fusible plugs that are expected to operate simultaneously shall be based on the sum of their outlet areas with due allowance for the pressure drop in all downstream sections. The requirements for such natural ventilation are as follows: When such a stop valve is installed, standardd locking device shall be installed to ensure that the stop valve is locked in the open position. Group A2, A3, B1, B2, and B3 refrigerants shall not be used in high-probability systems for human comfort.
The total amount of refrigerant stored in a machinery room in all containers not provided with relief valves and piping in accordance with 9. Note that donning respiratory protection is a last-resort option under most industrial hygiene regimens; it is preferable to provide engineering controls to reduce refrigerant concentrations to tolerable levels.
In this addendum, changes to the current standard are indicated in the text by underlining for additions and strikethroughs for deletions. In many cases, this may be entirely adequate to reduce the concentration, and respiratory protection may not be needed. Doors shall be clearly marked or permanent signs shall be posted at each 152001 to indicate this restriction. Every effort is made to balance the concerned interests on all 15-0201 Committees. Standarr or national regulations often prescribe that steps be taken to protect the health and safety of personnel working in the machinery room when refrigerant concentrations rise above the Ashrea.
ASHRAE Standard _图文_百度文库
Credit offered by NewDay Ltd, over 18s only, subject to status. For fusible plugs, P is the saturated absolute pressure for the stamped temperature melting point of the fusible plug or the critical pressure of the refrigerant used, whichever is smaller, psi kPaand atmospheric pressure is at the elevation of the installation above sea level.
The space qshrae containing the machinery is separated from other occupancies by tight construction with tight-fitting doors. Trains the technicians to leave the refrigerating machinery room when the refrigerant alarm sounds. A change in the type of refrigerant in a system shall not be made without the notification of the authority having jurisdiction, the user, and due observance of safety requirements.
Typical high-probability systems are a direct systems or b indirect open spray systems in which the refrigerant is capable of producing pressure greater than the secondary coolant. Toxic effects of vapor or the decomposition products due to vapor contact with flames or hot surfaces. If supplemental background documents to support changes submitted are included, it is preferred that they also be in electronic form as wordprocessed stajdard scanned documents. However, energy source selection and the possible environmental impact due to the energy source and energy transportation will be considered where possible.
These descriptions may not be complete and are provided for information only.
Rupture members used in lieu of, or in series with, a relief valve shall have a nominal rated rupture pressure not to exceed the design pressure of the parts of the system protected. When contamination is evident by discoloration, odor, acid test results, or system history, recovered refrigerants shall be reclaimed in accordance with 7.
After donning satndard respiratory protection if necessarythey may reenter the machinery room to close valves, fix leaks, shut off alarms, etc. Would you like to tell us about a lower price? Part “b” is revised to show that the relief device protecting the portion of the system potentially receiving mass from a higher pressure part of the system must have sufficient capacity to accommodate the vessel it is connected to as well as the mass flow rate of the higher pressure upstream vessel.
V gt ] shall be greater than V gc b the system or vessels being ashrxe have been depressurized and are vented to the atmosphere.
ANSI/ ASHRAE Standard 15-2001 User’s Manual : Safety Standard for Refrigeration Systems
Ventilation fans shall be on a separate electrical circuit and have a control switch located immediately outside the machinery room door. The pressure-relief device shall discharge into the low-pressure side of the system or in accordance with 9. Product details Paperback Publisher: It may be acceptable for trained personnel to enter the refrigerating machinery room to investigate the situation, repair minor leaks, reset alarms tripped in error, etc. Access is restricted to authorized personnel.
Recycled refrigerants shall not be reused except in systems using the same refrigerant and lubricant designation and belonging to 15-22001 same owner as the systems from which they were removed. Purpose, Reason, and Substantiation Statements: Others azhrae limited by levels where oxygen deprivation begins to occur.