16_-_36PB-1701_Bilge_Ventillation_System_Installation_DRAFT_1-10-17.pdf

Distribution Statement D: Distribution authorized to the Department of Defense and U.S. DOD contractors only; administrative or operational use (2017). Other requests shall be referred to Director, Naval Surface

Warfare Center, Carderock Division, Detachment Norfolk.

LIAISON ACTION RECORD ACTION NO: 36PB-1701

DATE: 3 JANUARY 2017

CODE: 834

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From: NAVSURFWARCEN CARDEROCK DIVISION, DETACHMENT NORFOLK, Code 834

To: Naval Surface Warfare Center

Carderock Division, Detachment Norfolk

2600 Tarawa Court, Suite 303

Virginia Beach, VA 23459-3239

Subject: BILGE VENTILATION SYSTEM INSTALLATION

Applicable to Hulls 36PB0601 – 36PB0612

Ref: (a) NAVSEA STANDARD ITEMS – CURRENT FISCAL YEAR

(b) 53711-300-5107858; STANDARD ELECTRICAL INSTALLATION REQUIREMENTS AND

NOMENCLATURE

ORIGINATOR: NSWCCDDN CODE: 834 APPROVED: N/A

Question or Action Required: Reply Required By: N/A

This Liaison Action Record (LAR) was developed to install blowers and drain holes in the bilge area to provide the boat ventilation and drainage to prevent corrosion to the hull plating in the bilge.

COMPLETED BY: APPROVED BY: DATE:

Mitch Hurdle

Telephone No. (757) 462-4533 Robert Bradford

Fax No. (757) 462-3856 (Branch Head, Code 834)

Autovon No. 253-4533

Answer or Action Taken:

1.0 Background

1.1 SSP customer, Kathy Felix, has concerns with hull plating corrosion in the bilge area of the

36PB’s (FY06). It is believed that excessive condensation is causing corrosion to the hull plating. Ventilation is being added to the bilge are to help minimize this problem.

DRAFT

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2.0 Preparation

2.1 None

3.0 Procedure

3.1 Install drain holes into collars located in frames in the bilge that have collars installed in accordance with Plan 7-A and Section 8-A.

3.2 Install PORT and STBD bilge blowers as shown on Plan 7-A and associated views.

4.0 Testing

4.1 Perform operational test of bilge ventilation system. Provide written certification, witnessed and signed by government and command representatives that all system testing has been completed satisfactorily.

5.0 Material Ordering Information

5.1 Material requirements are shown on Pages 4 thru 6.

6.0 General Notes

6.1 This Liaison Action Record (LAR) is applicable to hulls 36PB0601 thru 36PB0612.

6.2 Any changes in this Liaison Action Record (LAR) shall be addressed by LAR in accordance with NAVSEA Technical Specification 9090-100A, Rev 2. The LAR shall be addressed as follows:

Naval Surface Warfare Center

Carderock Division, Detachment Norfolk

2600 Tarawa Court, Suite 303

Virginia Beach, VA 23459-3239

6.3 For installation, lines shown in dashed (------------------) indicate existing equipment and/or cable. Lines shown in solid (_____________________) indicate new or relocated equipment and/or cable. Lines shown in phantom ( ) indicate existing structure and/or foundations.

6.4 All dimensions are in inches unless otherwise specified.

6.5 Template all work from boat and equipment as necessary.

6.6 All abbreviations are in accordance with ASME Y14.38-2007 except as follows: SF = Square Feet

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6.7 Paint new and disturbed surfaces and touch up existing paint that was damaged incidental to work shown herein. Painting shall include surface preparation and shall be in accordance with

Reference (a), NAVSEA Standard Item 009-32, Cleaning and Painting Requirements;

accomplish, finish color to match surrounding areas.

6.8 All threaded fasteners shall be corrosion resistant steel, ASTM A276, Type 316 unless otherwise specified. All nuts shall be the self-locking type. One corrosion resistant steel flat washer shall be used under each bolt head and under each nut. Bolt/stud lengths shall not extend less than 1 1/2 threads or more than 5 threads beyond the nut with full thread engagement.

6.9 Cable shall be installed in accordance with the requirements of Reference (b).

6.10 Cable lengths are approximate. Actual cable lengths and cable routing are determined by installing activity at time of installation on board the boat prior to cutting cables to length. Route cables in existing cableways where possible. If existing cableways cannot be used, installing activity shall install new cableways as required.

6.11 Fabricate nameplates (NPL 1 thru NPL 4) as shown in Details 13-B and 13-C and install as shown herein. Nameplates shall be fabricated from laminated engraving stock, ASTM-D709, Grade ES-1 with black surface and white opaque core. The plastic shall be engraved to produce white upper case gothic lettering on a black background. Plastic nameplates shall be 0.03 inch thick. The edges shall be beveled. Nameplates shall be affixed with double-coated urethane foam tape and shall be applied over the entire back surface of the nameplates.

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