Issues regarding the mandatory calibration of flammable and toxic gas detectors
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This post was last edited by Zirui on 2015-12-17 at 15:48. Recently, the company has a new batch of flammable and toxic gas detectors that need to be sent for testing. Although they have always sent them to the local metrology and testing institute for calibration, with payment made to obtain a certificate, it seems that they simply bring a gas cylinder to the site, release some gas to check whether it reaches the alarm threshold, and then determine whether the detectors are qualified. The technical standards involved seem quite low. I asked my supervisor if it would be possible to send the detectors to another qualified company for calibration, but he always said it wasn’t advisable, as the metrology institute might get upset if it found out. I checked the relevant **standards myself, but there are still some issues, as follows. 1. Does an online combustible and toxic gas alarm fall under the category of devices that require mandatory calibration? 2. Is it necessary to have a local metrology testing institute carry out the calibration? Can it be done by a qualified company or through factory reinspection? What qualifications are required for enterprise calibration? 3. What is the calibration cycle? Are there any relevant **standards or regulations that explicitly specify this? What are those standards? For the latest information, documents related to work safety are updated very rapidly; changes often occur within one or two years.
The sample gas used for identification is very expensive; this task can be carried out by the relevant authorities or by authorized agencies, and in either case it’s not cheap
The municipal quality supervision bureau conducts mandatory inspections once a year; whether there are any issues or not, the manufacturer still has to cover the costs for repairs or replacements!
The Safety Supervision Bureau requires that all detectors for toxic and harmful gases be inspected; here we conduct inspections every six months, at a cost of 800 yuan per inspection. There’s no choice – the Safety Supervision Bureau insists on such inspections