Gerald Spencer, P.E. has more than 50 years experience serving as the Engineer of Record responsible for the design and construction of the MEP portions of more than 1300 building construction projects since 1968 including more than 30 years of preparing forensic engineering reports. Gerald Spencer, P.E. has also been providing licensed professional engineering expert opinion and testimony concerning HVAC, electrical, plumbing, cryogenics, ventilation, construction contract compliance, construction cost  estimating, construction contract acquisition, construction contract administration, and other construction matters for attorneys with  since 2001.


gerald ROY spencer, P.E.


ELECTRICAL POWER QUALITY ANALYSIS


Gerald R. Spencer, P.E. is registered electrical engineer with experience at the Engineer of Record (EOR) responsible for the design and the construction of the electrical systems for many data processing projects where electrical power quality was critical to maintaining the operating reliability of and minimizing the processing disturbances to of the data processing equipment.


Gerald R. Spencer, P.E. has performed more than 40 electrical power reliability and quality analysis repoprts, surge protection reports, harmonic and other irregular electrical current analysis with our instruments and/or rented instruments.


Many of these facilities were US federal government projects requiring a knowledge of DoD Criteria, Corps of Engineers Technical Manuals, NASA, USAF, NIMA, and Department of State Design Guidelines for electronic communication security.


Gerald R. Spencer, P.E. is the Engineer of Record responsible for the design and the construction of  more than 20  remedial correction designs for corrective modifications to eliminate operational problem occurrences caused by electrical power quality. Some of these projects are as follows:


1.      NASA-JSC - BUILDING 16 - SAIL FLIGHT SYSTEM GROUNDING PROBLEM SOLVING - Gerald R. Spencer, P.E. field investigated and defined existing ground loops, harmonic circulations, and other electronic noise problems.  Gerald R. Spencer, P.E. designed remedial corrections to minimize problems.  Gerald R. Spencer, P.E. created standards for technicians to minimize future problems.

2.    NASA-JSC - BUILDING 5 - $450,000 - This project added a 1600 s.f. computer floor mezzanine around the existing SLS (Space Laboratory Simulator) to allow for the installation of additional computer equipment to serve the earth simulation of the tests before actual performance of the laboratory procedures in space.


3.    NASA-JSC - BUILDING 35 SMTF - $250,000 - This project added a 2500 s.f. computer floor to allow for the installation of additional computer equipment to serve the SMTF STEP 2/3 shuttle flight simulation/training operations.

4.    NASA-JSC - BUILDING 16 - SHUTTLE FLIGHT SIMULATOR FOR SAIL PROGRAM - This project involved the installation of isolated electrical power generation and distribution equipment, 400 HZ power generation and distribution system, raised computer floor, air conditioning and other modifications as required to convert a part of a high bay facility to a computer room with Shuttle Mock-ups used for Flight Training and Flight Mission project training.


5.    NASA-JSC - BUILDING 16 - SHUTTLE ELECTRONIC SIMULATOR GROUNDING PROBLEM SOLVING - $550,000 - Gerald R. Spencer, P.E. provided trouble shooting field work to locate the cause of and eliminate ground loops and power transients that were disrupting the computer operations.  We were successful in improving the reliability of the electrical service to the shuttle electronic simulator. 


6.    NASA-JSC - BUILDING 30 -  $123,000 - MISSION FLIGHT CONTROL CENTER - MODIFY POWER DISTRIBUTION SYSTEMS FOR INCREASED RELIABILITY - We modified the existing power feeders and added panels in the mission control center for increased reliability of the electrical service to the space flight critical control equipment.


7.     NASA-JSC - BUILDING 30 - $1,310,000 - MISSION FLIGHT CONTROL CENTER - REPLACE "B POWER SWITCHGEAR" - This project required the replacement of the electrical service to the Space Flight Mission Control Center in order to accommodate the addition of one additional 1350 KVA engine generator that operates in parallel with three existing 1350 KVA engine generators and two 3000 KVA pad mounted transformers.  Closed transition switching from commercial power to site generated power was required.  We performed short circuit fault calculations for each of the possible operating conditions.  We performed breaker/fuse coordination studies to assure that branch faults would not trip circuit breakers ahead of the branch circuit breaker.


8.    NASA-JSC - STUDY OF SITE ELECTRICAL SERVICE RELIABILITY TO ELECTRONIC DATA PROCESSING EQUIPMENT.  RELIABILITY AND REDUNDANCY REQUIREMENTS: The reliability requirements for each building or load served needs to be determined and defined.  Last year Spencer Engineers, Inc. performed a study DEFINING THE RELIABILITY OF THE EXISTING ELECTRICAL SERVICE TO CRITICAL DATA PROCESSING SYSTEMS AT NASA-JSC according to U. S. Army Reliability report requirements for communications networks.  This involved a review of operational and maintenance logbooks to develop a data base of power failures MTBF and disturbances MTBD (Mean Time Between Failures or Disturbances) to data processing equipment caused by the power supply.  Some disturbances were unexplained and we were not able to determine the origin/cause of the disturbance.  The data base was analyzed to determine mean time between failures for the power serving each critical system.  The service systems can be modified to increase reliability and redundancy:


9.    NASA-JSC - BUILDING 12 - $210,000 - MODIFY POWER SUPPLY TO DATA PROCESSING EQUIPMENT - Replaced existing building service switchgear serving the flight critical computers.


10.   NASA-JSC - BUILDING 35 - $185,000 - MODIFY POWER SUPPLY TO DATA PROCESSING EQUIPMENT - Replaced existing building service switchgear serving the flight critical computers.


11.   NASA-JSC - BUILDING 17 - $160,000 - MODIFY POWER SUPPLY TO DATA PROCESSING EQUIPMENT - Replaced existing building service switchgear serving the flight critical computers.


12.   NASA-JSC - BUILDING 4 - $166,000 - MODIFY POWER SUPPLY TO DATA PROCESSING EQUIPMENT - Replaced existing building service switchgear serving the flight critical computers.