Effective April 29, 2016
Effective Date (see Schedule below): April 29, 2016
Impact Statement: A review of all Listing Reports is necessary to determine which products comply with new/revised requirements and which products will require re-evaluation. It is anticipated that Commercial ozone generators designed exclusively for use in temporarily unoccupied spaces will require re-testing. NOTE: Effective immediately, this revised standard will be exclusively used for evaluation of new products unless the Applicant requests in writing that current requirements be used along with their understanding that their listings will be withdrawn on Effective Date noted above, unless the product is found to comply with new/revised requirements.
Overview of Changes: CSA C22.2 No. 187 3rd edition was revised to incorporate additional safety instructions and new requirements for equipment designed exclusively for use in temporarily unoccupied spaces. Specific details of new/revised requirements are found in table below.
Schedule: So that shipping of products with Listing Marks will not be interrupted, an approximate schedule has been established to ensure Listing Reports are found compliant by Effective Date:
Fees: An initial review of Listing Report (s) will be covered by a direct billing project and will be invoiced at not more than $1000 per report.
Client Action Required:
Information - To assist our Engineer with review of your Listing Reports, please submit technical information in response to the new/revised paragraphs noted in the attached or explain why these new/revised requirements do not apply to your product (s).
Current Listings Not Active? – Please immediately identify any current Listing Reports or products that are no longer active and should be removed from our records. We will do this at no charge as long as Intertek is notified in writing prior to the review of your reports.
New clause added;This Standard also applies to equipment for commercial use that intentionally produces ozone in temporarily unoccupied spaces incorporating an integral ozone detector.
New clause added;
The highest ozone level as measured in Clause 188.8.131.52(c) shall be posted on a label, both on the unit and the outer packaging. The 8-hour TWA (time-weighted average) ozone for this product shall be XX ppm when tested in a 30 m3 chamber. Refer to safety instructions in manual for more information. The following shall be included in the manual under safety instructions:
“This product complies with the maximum allowable concentration of ozone of 0.050 parts per million by volume (ppmv) in a 24-hour period. The Health Canada Guideline 2010 (ISBN 978-1-100-16288-1) recommends that the maximum exposure limit, based on an average time of 8 hours, is 0.020 ppmv or less when tested in a sealed, controlled room approximately 30 m3.”Note: “XX” is the highest calculated time-weighted average from Clause 184.108.40.206(c).
Additions to existing requirements are underlined below.Commercial
Revised Commercial- use ozone generator construction requirements. Additions to existing requirements are underlined and deletions are shown
(a) incorporate integral ozone sensing and detecting equipment;
(b) incorporate a timing device;
(c) be exclusively intended for use by trained technicians in accordance with the manufacturer’s instructions in temporarily unoccupied spaces; and
The tests specified in Clause 7.4 shall not apply to such ozone generators.
Revised Instruction manual. Additions to existing requirements are underlined and deletions are shown
(b) how to seal off the area in order to ensure that ozone does not migrate out of the area being treated;
(c) how to secure the area being treated with ozone to ensure that persons are impeded from entering the area and see the warning signs relative to the ozone treatment that is taking plac;
(d) how to operate the equipment as intended:
(i) enclosed spaces shall be dosed only once in a 24-hour period; and
(ii) only one unit is to be operated at one time in a single unoccupied space;
(e) proper maintenance and care of ozone generating and detecting equipment;
(f) that no one is allowed to enter the designated area under test during this time even wearing personal protective equipment (PPE);
(g) first aid methods for accidental ozone exposure;
(h) a material safety data sheet (MSDS) for ozone; and
(i) that the checklist for ozone treatment technicians shall be used by a trained person.Note: See Annex B for a sample checklist.
Additions to existing requirements are underlined below.Installation and operating instructions for use shall be provided with each product.
|7.5.7||New section added|
|220.127.116.11||Ozone sensor and detector|
The ozone detector shall meet or exceed the following specifications:
(a) response time equal to or less than 60 s;
(b) accuracy the greater of 0.0020 ppmv or ±2% of the reading at 50% RH and 25 °C;
(c) linear range of 0 to 1 ppmv; and(d) detection less than 0.050 ppmv.
The ozone detector shall include the following features:
(a) it shall stop the production of ozone at 0.80 ppmv;
(b) it shall have an alarming function with audio and visual (red light), as a warning signal, whenever the detected ozone level exceeds 0.050 ppmv;
(c) the ozone detector and alarming circuit shall be provided with a battery;
(d) the unit shall be provided with a low battery warning signal. The low battery signal shall start to activate at least when the battery can last for another 8-hour time duration. The 8-hour operation of the low battery condition shall be tested with all options of the unit switched on;
(e) the ozone generator shall not start until the ozone detecting equipment has achieved its steady state operating condition according to the manufacturer; and(f) a monitoring function to detect and provide an alarm for any fault that can affect the safe operation shall be conducted when the unit is initially powered. The fault alarm shall be easy to distinguish from the ozone level alarm.
A timer shall be incorporated in the unit and shall:
(a) prevent the unit from operating beyond 1 h;
(b) be reset manually after the initial set time of 1 h maximum has elapsed;
(c) upon loss of the electrical supply and when the timing action is interrupted, resume at the
point of interruption upon restoration of the electrical supply;
(d) stop the production of ozone after 1 h of operation; and(e) meet the requirements of CAN/CSA-C22.2 No. 177 or CAN/CSA-E730-2-7.
Electronic circuitsAny electronic circuit associated with the safety functions in Clause 7.5.7, or performing any alarming function to indicate the safe ozone level for safe re-entry to the unoccupied space, shall be evaluated for functional safety in accordance with the requirements of CSA C22.2 No. 0.8.
|7.5.8||New section added|
Ozone detector testThe test shall be conducted with the timer described in Clause 18.104.22.168 bypassed.
ConditioningThe unit shall be conditioned at 50% RH and 25 °C for 24 h before commencing the tests specified in Clause 22.214.171.124.
The following test conditions shall be met:
(a) The test shall be conducted in a chamber approximately 3 to 5 times the size of the unit.
(b) The test shall be conducted at a temperature of 25 ± 2 °C, and humidity 50% RH ± 10%.
(c) The unit shall be located at the centre of the chamber.(d) A reference ozone monitor sample line shall be placed 50 mm from the inlet of the ozone sensor being tested.
The test shall be conducted as follows:
(a) The device being tested shall be switched on and exposed to the test gas. The ozone level at which the alarm signal gets activated shall be recorded.
(b) The device being tested shall be continually energized until the maximum ozone limit is reached and the unit stops producing ozone. The ozone level at which the device stops producing ozone shall be recorded.
(c) The test chamber shall be vented in a safe manner to reduce the ozone concentration until the alarm deactivates. The ozone level at which the alarm deactivates shall recorded.(d) The test method above shall be repeated 3 times on the same device.
The acceptance criteria shall be as follows:
(a) The alarm shall activate at or below 0.052 ppmv.
(b) The device shall stop producing ozone at or below 0.816 ppmv.
(c) The alarm shall deactivate at no more than 0.052 ppmv.Note: Maximum allowable error has been incorporated [consistent with Clause 126.96.36.199.1(b)].
The endurance test shall be conducted as follows:
(a) The unit shall be placed in the test chamber specified in Clause 188.8.131.52.1(a) with the vent open. The unit shall then be operated continuously for a period of 168 h. After this time period has elapsed, the vent shall be closed.
(b) The test method described in Clause 184.108.40.206.2 shall then be repeated.
(c) The acceptance criteria shall be as follows:
(i) The alarm shall activate at or below 0.054 ppmv in the intended manner.
(ii) The device shall stop producing ozone at or below 0.832 ppmv.
(iii) The alarm shall deactivate at no more than 0.054 ppmv.Note: Double maximum allowable error has been incorporated [consistent with Clause 220.127.116.11.1(b)].
CUSTOMERS PLEASE NOTE: This Table and column "Verdict" can be used in determining how your current or future production is or will be in compliance with new/revised requirements.