Why might insulating blankets be difficult to use in some situations?

Insulating blankets can present challenges in certain situations primarily because they are difficult to install and remove for maintenance. This difficulty arises from the need for careful handling to ensure that the insulation remains effective and that no damage occurs during installation or removal. Additionally, if insulation blankets are used in places that require regular access for maintenance, the process can become cumbersome, leading to increased downtime and labor costs.

While factors like fragility or bulkiness may affect certain applications, it is the logistical challenge of installation and removal that creates significant barriers in practical usage. Sometimes, the design of equipment or the space around it may not allow easy access for these insulating materials, which can hinder routine checks and repairs. Thus, option B accurately captures the primary concern regarding the practical application of insulating blankets in varying environments where maintenance access is crucial.