Fail Safe vs. Fail Secure Tutorial

****** ******* ************* **** know *** ***** ******** apply, *** *** ** select ***** **** *** appropriate.

** **** ********, ** teach:

• *** ********** ******* '**** safe' *** '**** ******' locks
• *** **** ****** ** important
• *********** ***** ** *** goal
• ********** ********* *** **** secure
• **** ** *** **** secure ********
• ******* ****** ***** *** fail **** *** **** secure
• ****** *********** ** ******** and ******* *** '**** safe' *** '**** ******'

*******, ***** *******,**** *** * ******** quiz.

Terms *******

***** ***** **** * specific ******* *** **** hardware. ******** ***** ********* are ***** ** ************** or **** ********, **** mean:

• **** ****: **** ***** is *********** (*****), *** electronic ******* ****** ** released (********).
• **** ******: **** ***** is *********** (*****), *** electronic ******* ****** ** secured (******).

***** ********* *** ****** hardware ****** *** ****** control *************, ** ****** the ********** ***** **** is **** ** **** important.

Free ****** ******

*** ************* ** ***** terms ******** ***** **** of *** **** **** apply.

'**** ******' *** '**** safe' *********** ********* ******* to ***** ******* ****, meaning ****** ****** ** most******** ********* ******* ******* ** *** times. ** ** ********* situation, ******* ****** ****** egress (** ****) **** a ********.

**** **** ******* ** chaining **** ***** **** resulted ** ******** *********, a *********** ******** ** life-safety *********** ****** **** not ***** ***** ** complicate *******.

**** ***** **** **** doors **** ****** ** equipped **** ********** ***** to ******** *********** ***** (i.e.:***** **** ** **** devices) *** ** *********** hardware ****** ** **** to '**** ****', ** cannot ** ****.

'Fail ****' ********* ********, **** '**** ******' **********

** **** *****, **** locks *** ******** ** 'fail ****'.

******* ** ******** ************, 'fail ******' ** ******** by ****. *** **** common ***** ***** **** is *** ****:

• **** *****:***** ***** ******* ********** barriers ** *** ****** of ***** ****** * building ****, *** *** common ******** ** **** control ******, ***** * closed-door ** **** ** seal *** * ******* of ** ******** *********. It ** ********** ********* for * **** **** to ****** ****** ** a ****, *** ******** latching '**** ******' ******** is ***** ********* ** ensure * ******** **** is ****** *** **** regardless ** *****.
• ********* *****: ** **** ******** occupancies, *** ********** *** locked ** ******* **** the *******, ** **** evacuation ****** ***** ******* and *** *********** **** harm ******. **** ******* one ** *** **** modified *** *********** ****** of ****, **** **** code ********* **** *** years ********* ** ********* among ****.

**** ****** ***********, **** jails, *******, ****** ****** care **********, ** ******* homes *** *** **** Secure ****** *********** *** are ********* ******* ********* and ***** ******* ** safe ********* ****** *** often ********.

Controlling ***** ** *** *****

*******, '**** ****' **. 'fail ******' ** * critical ****** ** ******** entry **** * ******** during ** *********.

************ ** ******* ********** could ** ****** *** of ** **** ** it ** *** ******** configured ** '**** ****'. On *** ***** ****, occupants ***** ************* **** a **** ****, ******** otherwise ********* ***** ** a ******** ** '**** secure' ** *** ******** implemented.

*** ******** ** ******** when ***** ***** ** a *** **** ** building ******, *** **** functions **** * *** role ** ****** ******** a *********** ********* ********.

Mechanical *********

***** '**** ******' ******** is ****, ************** ******* * ********** override. ** *** **** of *******, *** ******** lever **** ** **** device ******** **** ********, but ***** ***** ** electrified ******** *** ******* additional '********** *** ********' components.

*** *******, ** *** image ***** *** **** device ****** ****** **** egress **** *** ******, but * ***** ***** allows ******* ****** **** if *** ****** ** electronic ***** '***** ******':

*******, *** ********** ******** is **** * ****** of ******* ** **** access ********** *****. ** someone ***** ***** ***** a ***, ****** ** granted ******* *** '******' able ** *** *** entered. ********* ********* ******* ***********, ********** overrides ****** ** '**** forced' ****** ** ****** control ****, *** ****** system ********* ********** ******.

** * ******, *** use ** ********** ******** Keys ** ***** **** only ** ** ********* basis **** ********** *** keyholders - ** ******, these *********** ************ *** often *** ******* *** many ***-***** ** *****.

Field ************ *****

**** ********** ****** ***** can ** **** ** behave ****** '**** ****' or '**** ******'.

*** **** ****** ******* are*******, ***** ******** *** position ** ****** ** dipswitches ****** *** *** lock ********* **** ***** fails:

Designing ******* **** **** ********** *****

*** **** ********, *** default ******** ** ** 'fail ****', ****** ********* noted ** ****** *********, hardware ********* (*** ***** below), ** ***** *********** plans ** '**** ****** required'.

*** ***** ******** ** this *********** **** **** according ** *** ******, but ***** ******** ** 'fail ******' ***** ** limited, **** *** ****** always ****** *** ** an ********* ** ******* manner:

Maglocks *** '**** ****'

** ******,*************** *********** ** *******, so **** ***** ** removed **** '**** ****' by *******. *** **** in ***** ** ***** a ********* ** *** fire ***** ****** ** that ** *** **** pull ** *********, *** maglocks **** ***** ** the **** ****. **** can ***** ****** **** building ********, ** **** [link ** ****** *********]******* exterior ***** *** ******** and **** ** ** accessed **** *** *******, so ********** ***** *** an ********* ******* ** many ** ***** *****.

********* ****** ***** ** maglocks ** *** ****** adopted *** **** ********. When ****** ***** ** used **** ********, ** must ****** **** *** concurrent ******** ** *** AHJ *** ***** ** installed ** ***** ***** during ** ********* *****. See ***:*** ** *** ******** With ******* ***** *********** *** **********.

But ******* ***** '**** ******'

***** ******* *** ******** be ***** ********** *** either '**** ****' ** 'fail ******' ********.

************ *** ***** ******** Strike***** ****** ***-***** *********, but ***** **** '******' elements ** ******* *** driven ** *********, ******** the ******* ******** ** the ******** *** ***** the ****** ** ** rigid ** **** ** power, ** ********** ********.

***** *** ************* ** either ******** ** ********* a ****** *******, ******* are ***** *** ******* devices ** ******* '**** secure' *************. ***** *** mechanical ******** ** *** door ******* ******* ********** egress, ******* *** ****** additions ** *** ********** opening ** ******* **** feature.

***** ********: ***** *** * number ** ***** '**** secure' ******** ******* *********, including ********** *********, ****** locks, *** *********** *****. However, *** ******** *** use ** **** ******** may *** ****** **** codes ******** ** ********* egress ***** *** *** not ******** **** ** fail ****** *************. [**** no ****** *********]

****

*******, ***** *******,**** *** * ******** quiz.