The phrase "additional security procedures" is correct and usable in written English.
You can use it when referring to extra measures or protocols implemented to enhance security.
Example: "Due to recent events, we have implemented additional security procedures to ensure the safety of our employees."
Alternatives: "extra security measures" or "supplementary security protocols."
Additional security procedures were in evidence at hospitals on Tuesday to prevent a similar secondary strike.
"We had already implemented additional security procedures for Games 6 and 7 and we don't anticipate any further problems," he said.
Continental Airlines is asking its passengers to arrive at the airport an hour earlier than usual, to allow for additional security procedures.
The memorandum, from Judge Michael J. Creppy, a Justice Department employee, said the secrecy was necessary because Attorney General John Ashcroft had "implemented additional security procedures" for certain cases in the Sept. 11 inquiry.
That suggests that the Egyptian issues with the easyJet flights were more of an operational nature than any specific threat, as the airport tries to cope with an influx of extra flights on a busy day, as well as additional security procedures.
The commission plans to recommend a series of "additional tools" to tighten security procedures for commanders on the ground and for forces passing from place to place.
We have taken additional steps to strengthen our security procedures and systems, and we will continue to implement improvements on an ongoing basis.
The encryption ensured records could be linked in an unidentifiable form, but our security procedures provided additional safeguards.
Consequently, small and midsize businesses will need to buy additional security products and put policies and procedures in place so that information will be secure.
In addition, El Al recently increased its security procedures.
I even offered to pay additional security.
