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温度控制的存储:您可以季节性切换温度设定点吗?

绘制设定点冬季和夏季
保罗·丹尼尔(Paul Daniel), Senior Regulatory Compliance Expert
保罗·丹尼尔(Paul Daniel)
高级GXP监管专家
Published: Apr 29, 2022
Life Science

Vaisala高级GXP监管专家保罗·丹尼尔(Paul Daniel)经常收到有关验证的问题。大多数问题对GXP调节的行业中的其他问题都是常见的,并且使用以前已经发布的材料很容易回答博客文章。但是,有时我们会收到一个全新的问题。

在这个博客中,保罗回答了他以前从未收到的问题。为了确保他的答案是合理的,他与一位具有数十年生命科学验证经验的验证专业人士联系。有时,两位专家比一个专家更好 - 尤其是如果问题是例外的话。

考虑到这一点,我们邀请您参加网络研讨会”验证:问我什么“保罗是由乔什·基南(Josh Keenan)通过Axis Consulting加入的。他们将共同尝试回答有关GXP合规性验证的所有问题。了解更多并注册...

M.写道:

Good day Paul,

最近,我正在观看您的一个网络研讨会,并且有一个与季节性变化对温度控制空间的影响有关的问题。在我们的公司中,我们根据该公司进行了夏季和冬季温度映射研究谁模型指导用于时间和温度敏感的药品的存储区域的温度映射。从这些温度映射活动中,我们发现,在夏季条件下使用72°F(22.2°C)的温度设定点(22.2°C)和在冬季条件下的73°F(22.8°C)时,我们可以最好地控制室温。通常,我们对温度敏感的存储位置受到一个经过验证的温度设定点的控制,因此我想看看您是否有任何想法,是否有两个设定点,一个用于冬季,一个用于夏季条件。如果是这样,我们是否应该在肩膀月份的两个设定点之间进行切换,我们在4月和10月进行切换。感谢您可以就此事提供的任何见解。

谢谢,
m

保罗写道:

感谢您与我联系!我想我可以回答,但我也想与一位与我一起编辑最新修订的同事签到ISPE’s Good Practice Guide for Controlled Temperature Chambers。希望我们俩都能更充分回答您的问题。

就我而言,在理想的世界中,总会有一个全年的设定点。您显然发现,现实世界更加复杂。我想知道您是否能够确定冬天的72°F设定点是否太冷?或者,如果夏天的73°F的设定点太热了?我猜您在这方面没有任何牵引力,否则我们不会说话。您能找到72.5的妥协吗?我的意思是,华氏1度是半摄氏度。这确实是如此较小的差异,它可能比控制传感器的仪器误差要小。

您是否有HVAC专家查看他们是否可以调整HVAC系统,以便您可以使用一个设定点操作?您可能已经这样做了,但是只需检查一下…

我没有经历过仓库经营季节性变化的情况。但这并不意味着这是不可行的。但是,我已经看到公司以这种方式使用孵化器。不是季节性变化对设定点的变化,而是根据产品规格进行设定点的频繁变化。为了支持设定点的更改,他们在每个设定点上映射了每个单元。在校准温度探针时,他们向Vaisala发送了担忧。如您所料,它需要异常范围的范围来适应其设定点。

但是回到你的仓库;我认为,将切换到季节性设定点的程序将其程序化是必要的。我的本能说,将此转换链接到已经计划的其他一些事件,例如PM或校准。也许您可以作为变更控制的一部分进行操作,以确保正确跟踪它?

我对开关进行程序的本能源于我在仓库映射方面的经验。季节性更改的设定点是不寻常和不寻常的事情,往往会引起审计师的问题。在审核期间,您最好的问题是您最好的问题。

Let’s check in with my colleague and fellow editor of the ISPE good practice guide…D.

D写道:

HI Paul and M.,

Thanks for including me in this discussion. First, Paul and I agree that there typically is no need to change a set point in a warehouse and he brought up several good points. In my experience, I have not had to change chamber settings for winter or summer applications. But for full disclosure, I have only managed a few chambers that were located outside and were used to store GMP products and so did not need to be adjusted.

我会考虑以下几件事:

• What is the test acceptance criteria? Per USP it could be 15°C to 30°C or if it’s for a drug stability situation it could be ±2°C. The reason I ask is: does one degree set point change keep it from going out of specification as per test acceptance criteria, or are you just noticing that the trend looks different and want to compensate to maximize the allowable temperature alarm limits?

•探针在哪里?如果它们离墙壁或天花板太近,这可能会导致读数差异。热休息位置将在墙壁中移动,如果传感器太近,它可能会影响读数。

如前所述,1度温度很小。如果我们考虑使用的传感器的测量不确定性,那么总可读温度是否仍会达到1°C?

This is an interesting question, so I called a friend of mine who owns and operates a chamber manufacturing company and presented this problem to him. He said that he has not experienced this issue. He builds his chambers to meet GMP and other regulatory requirements and his thoughts were the same as mine; it could be a number of issues.

1。Sensor placement
2.空调源
3.空气速度
4.腔室负载

话虽如此,如果您必须每个季节更改设定点,我的担忧与Paul的关注相符:从审计的角度来看,与GXP相关应用程序中不常见的任何活动都会变得棘手。这就是我建议的:

a. Determine when you will temperature map and at what settings. Some in the auditing community feel that if you change the set point, or any other setting for that matter, you must remap the chamber. This might depend on how much of a change will be allowed. Some say that changing the set point one degree won’t make that much of a difference. This would depend on how big a span your test acceptance limits are.

I worked at a major pharmaceutical manufacturer for almost 30 years and was the primary audit contact for Development Stability, Reference Standards and Laboratory equipment. If I had to change the condition of a chamber, I would map it before the change so I could “bracket” testing from start of that condition to finish for that condition and then change the set point or any other adjustments I would need to make. Then I would map it again. If the 1st test failed it would require me to submit a deviation to prove the samples were safe. If the second test failed…. Actually, it couldn’t fail because you are allowed to do whatever you want to the chamber before starting the test. I would even collect data while testing the chamber.

b。如果您想在设定点之间来回走动而不每次映射,则可以在当前温度下映射腔室,然后等待直到季节更改,然后再次映射。我的问题是,您如何知道它会变得有多冷或变热,以及这会如何影响室内的温度?

c. Continuous mapping: I haven’t tried this before, but if you are mapping continuously and all sensors were alarmed, I think you could justify any change to settings as you would always know if you within limits. Vaisala has awebinar on continuous mappingwhere Paul explains how this works.

以我的经验,审计师主要关注您是否根据会议厅制造商的建议使用室,并将产品和样品存储在所需的温度中。确保所有传感器都经过校准和记录。

再次感谢Paul将我包括在内 - 这是一个棘手的问题!

此致,
D

M.回答:

伙计们,我非常感谢您的详细回复。为了更具体,我们正在大型仓库中进行资格级级温度映射,以用于控制储存20-25°C,而不是中间使用室。

We do allow excursions per the USP guidelines, but in general, we keep all sensors (every data point) between 20-25°C during the week-long summer and winter mapping studies. We allow for explainable excursions (e.g., a dock door opened), or other short excursions of less than an hour.

我们遇到的问题在于,我们的一些存储空间具有一些传感器,这些传感器在冬季或夏季在25°C以上始终在20°C以下下降。从历史上看,我们的设施小组只是季节性地移动了恒温器,以便我们在夏季运行一些凉爽的凉爽,并在冬季(范围内)更热,以免避免散发出范围的热/冷点。

我们有一个较旧的仓库和空气处理设备。如您所建议的那样,我们一直在要求他们锁定设定点,以便考虑其资格,并且不需要三年的重新映射。当他们更改设定点时,我一直需要进行新的映射研究。

We try to avoid the magical 25°C at any data point to align withUSP <659>包装和存储要求和we need to do a mean kinetic temperature calculation, which doesn’t have any clear set of instructions or acceptance criteria.

在与大家讨论之后,我将继续推动单个设定点并改善气流或绝缘层以减轻季节性波动。

再次感谢!
m。

问我任何事情:GXP环境中的验证专业知识

我们收到许多有关验证,资格,验证和计算机系统保证的问题。在本网络研讨会中,Vaisala的高级监管专家Paul Daniel与Axis Consulting校长Josh Keenan一起加入。他们共同回答有关如何在GXP调节环境中优化验证工作的问题。

通过电子邮件发送您的问题,或将它们带到我们的现场网络研讨会。所有注册人将收到记录的网络研讨会。

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