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  • Perform user seal inspectionDatum16.04.2020 05:26
    Thema von goodwood20 im Forum Fragen ans Forum

    "Over the past few weeks, concerns about COVID-19 have been growing and changing rapidly in Canada. From day one, we have looked at this through the perspective of how it will affect first responders, medical workers and medical staff Health risks.
    At present, N95 masks are in short supply worldwide. It is reported that since the outbreak of SARS in 2002, Ontario has hoarded 55 million masks, but now it has expired. This requires a question "Can I still use an expired N95 mask?"
    Can you use expired N95 masks?
    In February this year, 3M, a manufacturer of gas masks, released a technical report called "Notes on Gas Masks Beyond the Shelf Life", which provided some insights.
    This technical report introduces readers to the guidelines issued by the US Centers for Disease Control and Prevention (CDC) "Strategy for Optimizing the Supply of N95 Respiratory Masks ."
    "In the case of increased demand and reduced supply, you can consider using N95 respirators that exceed the expected shelf life. However, the respirator may not meet the certification requirements. Over time, parts such as straps and materials may deteriorate, which affects The quality of the fit and seal. Before using the N95 respirator, HCP (medical professional) should check the respirator and perform a seal check. In addition, expired respirator may no longer meet the certification requirements of NIOSH Wholesale Surgical Mask.
    Levitt-Safety conducted random fit tests using expired masks from different brands. According to our experience, these masks still passed the health test, indicating that the tested masks can still be used normally.
    It should be noted that we tested expired masks within a limited sample size. This does not necessarily mean that all expired masks are valid. We recommend that customers test themselves before issuing any expired masks.
    Before using expired N95 respirators, you should try purchasing other niosh approved respirators, including:
    Various types of filter masks
    Respirator or
    Powdered Air Purifying Respirator (PAPR)
    This follows the best practices in "Optimizing N95 Respirator Supply Strategy".
    The Center for Disease Control and Prevention made this recommendation because health care services are indispensable and services must continue to be provided in the face of the 19th polio outbreak.
    Any organization that chooses to use the expired N95 mask should notify the staff before use. The organization should also emphasize again the importance of inspection and user seal inspection.
    In short, if you decide to use an expired N95 protective mask, you must understand:
    They are not respirator approved by niosh.
    You should ensure that they are stored according to the manufacturer's specifications.
    They must be properly checked, including headband and nose parts
    They should be your last choice after the N95s, flexible APR and PAPR "
    "Why can't the respirator meet the requirements?"
    The longer the shelf life of the respirator, the less likely it is to achieve the desired effect.
    Once the shelf life has passed, not only will the filter be affected, but also key components for effective sealing such as hair bands will lose their elasticity and / or become fragile and broken, or the nose foam will harden, preventing effective sealing.
    It also needs to be considered from a health and safety compliance perspective. Once expired, even if the mask is "valid", it has lost N95 certification. This means that even if the mask works, if it is used in an environment above the danger threshold, the user may not technically meet the requirements. If it is below the threshold limit, compliance is not a legal issue because the mask is used as a barrier.
    Can you use expired N95 masks for training?
    According to the 3Ms bulletin, training activities are a good place to use respirators that have exceeded their shelf life. During the training period, the wearer must receive correct training in wearing techniques, including:
    The position of the headscarf
    Nose clip,
    Perform user seal inspection.
    If your organization uses expired respirators of the same model as your employees, we recommend that you use these respirators for training. In this way, you can save unexpired respirator for protection.
    Is it possible to use expired N95 protective masks for health testing?
    You can use an expired respirator for proper testing in certain situations. Your organization needs to consider the following factors to determine whether it is appropriate:
    Depending on the storage conditions on the packaging, use a respirator for proper testing.
    Before performing a suitable test, visually inspect the respirator to confirm that it is not damaged or defective. This includes hair bands, nose clips, nose foam and shells.
    Consider the time between the mask expiration date and the test date. The shorter the interval between the two dates, the more reasonable-you do n’t want the interval to exceed one year.
    If your health test pass rate for these respirators is lower than expected, please pay close attention. If this happens, you will consider discontinuing them.
    How to store disposable masks:
    In their article "Why do disposable masks have a definite shelf life?" 3M explained how to store disposable masks because "storage conditions are a key factor in determining the shelf life of masks."
    They suggest:
    Always keep the respirator in its original packaging.
    Keep the respirator away from contaminated areas, dust, sunlight, extreme temperatures, excessive humidity, and harmful chemicals.
    Implement good inventory management measures, including inventory rotation.
    In that article, 3M also provided suggestions for replenishing your inventory and handling expired masks. "

  • then sees to at five Zhang circleDatum03.03.2020 14:46
    Thema von goodwood20 im Forum Fragen ans Forum

    Any elder brother!Come I respect you."The body robust Mang man carries big bowl of.
    " Cow, come."Teng always any straightforwardly the station rise, after 2 people touch a bowl, direct 1 bowl drinks up.
    "Any elder brother, today you son's green mountain but wanted to experience to investigate, do you have confidence to have no?"That' cow'smile an inquiry way.
    "Certainly have."Teng any always stares.
    The cow depress an orotund way:"I am that small Zai son, with your son together year old, I am to secretly once test my son, he is to raise 40 catties of sand bags.Ha ha, I remember any elder brother, you the result in 6-year-old time, is also raise 50 catties, this time, my son can perhaps be they together the age person win the most severe a."
    At have no inside self-discipline vigorously inside the country villa of method, natural endowments and diligent degree, decision hereafter achieve.
    Teng always any kid's period, the dint is big, plus diligence assiduous, and then beat iron all day long, just have thousand catties of huge dint at present.
    The old clan is long'Teng cloud dragon'of grandson, the cousin of Teng green mountain'Teng green tiger', at at the age of 6 , but can raise 60 catties, at the age of 9 , raised 300 catties of megaliths more.This kind of natural endowments, than the Teng in those early years any is always stronger a raise.Inside the clan to Teng green tiger, send to hope very greatly.
    "I son's green mountain he, edibled since the childhood, edible so, affirmative unlike your kid bad."Teng any always looks like confidence hundred percent.
    Actually, Teng any heart bottom always deliver falsely, because of, he has never secretly once tested a Teng green mountain.
    "Edible severe?"At bordered on the Teng green mountain on the table to see father Teng always any eye, in the heart but very easy.Because the cause of house boxing inside the form idea, the Teng green mountain has never expressed in parents' in front, as for investigate inside the clan this time, the Teng green mountain has no pressure at 1:00.
    Is 3 years old to start producing inside the strength, arrive at present, did to approach for three years.
    Plused to inherit the father's blood relationship, the born body character was also good, now this pair body of strength, absolutely make the owner dumbstruck.
    "The father and mother thinks greatly of so and cans not make them disappoint, either."The Teng green mountain that has been concealing real strenght decides to reveal a little real strenght.
    Because last night suddenly and violently snow, make to do the accumulated snow on Wu Chang deeply to be good enough to drown knee, however has been ascended trampling of 1000 people, have already become thick solid, top at will the Sa is some plant ash, how don't slip.
    Is big year of today 30, the whole afternoon, Chuangs in the Teng house all sink to immerse at happiness in the middle.
    The people's customs young tiger is fierce, nature, this joys celebrates of time, everyone started than the bow and arrow technical skill, had a competition to trip and fall down wrestle and had a competition gun Shu ……
    The color of the sky is dusk, Teng green mountain and green rain of younger sister Teng , just in the crowd, round to looking at to trip and fall down technical skill.
    "Add to chase a strength, black bear, don't give a small guy to vanquish!"
    "Cousin, cousin!"Clear and crisp voice the green rain larynx ring out from the Teng.
    The Teng green mountain sees the younger sister before the body, and then sees to at five Zhang circle the inner part trip and fall down 2 people of wrestle, these two people are the cousin of Teng green mountain respectively'Teng green tiger'and cousin'Teng green Hao', the Teng green Hao is a marksmanship teacher'Teng always Xiang'of son, have been 18 years old at present.
    But the green tiger of cousin Teng, lead today, just 12 years old.
    The Teng green tiger height is about seven Chinese feet(approach one meter 75, 1 Chinese foot is 25 Li rices), but Teng green Hao height seven the Chinese feet are 6 inches.(one meter nine)
    It is 18 years old, have been already become adult.Is 12 years old, but can be regarded as a youth.
    Teng green Hao, have'black bear'of nickname, be because his strength is very big, at and some time age very among the clansmen, the Teng green Hao about ranks the first.

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